rotary vane vacuum pump o f vacuum forming

The application of rotary vane vacuum pump in forming process has been tested by many years'practice, representing the most advanced level at present.

Claw vacuum pump is energy-saving, mainly used for pressing process, such as furniture production. If the requirement of vacuum is high, rotary vane vacuum pump can be the first choice.

Screw vacuum pump can discharge leaking gas and steam without affecting the operation of the vacuum pump. It is the preferred lamination process for solar battery components, flat screen and smart phone display screen.

Vacuum forming, compaction and lamination are common processes in many industries and manufacturing technologies. Through these processes, various materials can be combined or customized.

As far as moulding is concerned, it is very important to inject materials into moulds in a vacuum that meets specific requirements. Thermoforming is a common process in the production of products, which can make plastic film forming. In the thermoforming process, the plastic film is heated to soften it. Then vacuum the die. Under the action of vacuum, the heated and softened plastic film is pulled into the die. Once the plastic film is cooled, the shape of the die will be formed. This method can be used to manufacture food and other commodity packaging, as well as the preformed plastic shell of garden pool.

Vacuum pressing technology can be used in the wood industry, for example, when you want to paste multi-layer wood together, but because of the geometric shape, mechanical pressing can not be used, then vacuum pressing should be used. In addition, vacuum technology can also paste or fix plywood or synthetic materials to the front of the kitchen and other similar boards.

Vacuum lamination is a process that combines multi-layer materials, often used in semiconductor and electronic industries. Solar cell packs, flat panel screens and smartphone screens are made in this way.

Rotary-Vacuum-Pump-in-Wood-Plastic-Extrusion

Piston-Vacuum-Pump-in-Oilfield-Production

Rotary-Vacuum-Pump-in-Diketene-Production

Vacuum-system-in-Chemical-Production

Vacuum Pump in Coating Technology

In terms of coating technology, what are the application aspects of vacuum technology?

Vacuum technology plays a decisive role in many coating processes, such as vapor deposition of metals, plastics or glass. In many cases, these processes cannot be realized without vacuum. Generally, at the beginning of the process, a medium or high vacuum is applied to the chamber to exhaust the vacuum, then the reaction gas or gasified solid raw materials are extracted.

These coating processes have a common requirement: the chamber must be kept in a medium or high vacuum which fully meets the requirements of the coating process. These coating processes help to change the surface characteristics of the material, such as hardness or corrosion resistance. In addition, vacuum coating can also improve the adhesion or wettability of materials, or make the surface of materials maintain maximum hydrophobicity or hydrophilicity.

We provide a large number of vacuum solutions for different coating processes. In addition to independent vacuum pumps, we also supply a full set of vacuum systems. Single-stage rotary vane vacuum pump is especially suitable for coating process. Practice has proved that rotary vane vacuum pump combined with Roots vacuum pump is a standard solution for medium vacuum coating application. Various types of variable pitch screw vacuum pumps and Roots vacuum pumps can also be provided, so that the design of the vacuum system can fully meet the requirements of the coating process. If high vacuum is needed, we have turbomolecular vacuum pump and diffusion vacuum pump, which can be combined with the front pump to meet the coating process requirements.

Roots-Vacuum-Pump-of-pulp-equipment-for-paper-machine

High-Quality-Water-Ring-Vacuum-Pump-From-China

Vacuum-system-in-Distilled-Resin-Rosin-Production

Rotary Vacuum Pump of Actual Vacuum Oil Level

Rotary vane vacuum pump (Rotary vane pump) is an oil-sealed mechanical vacuum pump. The working pressure ranges from 101 325 to 1.33 x 10_Pa, which belongs to low vacuum pump. It can be used alone or as the front pump of other high vacuum pumps or ultra-high vacuum pumps. It has been widely used in metallurgy, machinery, military industry, electronics, chemical industry, light industry, petroleum, medicine and other production and scientific research departments.

Rotary vane vacuum pump can set the upper and lower limits of the required vacuum. When the vacuum reaches the upper limit, the pump will stop automatically, and when the vacuum drops to the lower limit, the pump will start automatically. The oil level of rotary vane vacuum pump needs to be checked regularly. To check the oil level of the rotary vane vacuum pump, the oil level should be in the center of the oil mark of the rotary vane vacuum pump. The oil level is too low to seal the exhaust valve, which will affect the vacuum degree. If the oil level is too high, it will cause fuel injection when starting. In the specific operation, the following points should be paid attention to.

Before the rotary vane vacuum pump runs, take off the triangle belt first, turn the motor to correct, and then start, so as not to inject oil. When running, the oil level rises slightly, which is a normal phenomenon. When the oil quantity is insufficient, vacuum pump oil is used and added from the filling hole. Oil must be filtered to prevent impurities from entering and blocking oil holes.

Rotary vane vacuum pump outlet, such as mounted solenoid valve, should be operated with the pump at the same time. When starting the rotary vane vacuum pump, the start button should be first or twice activated to make the oil pressure in the pump chamber into the oil tank, and then start the operation formally. When the ambient temperature is higher, the oil temperature of rotary vane vacuum pump increases, the viscosity decreases, and the saturated steam increases, which will cause the limit vacuum to drop. Therefore, ventilation and heat dissipation should be strengthened. Rotary vane vacuum pumps with air ballast valves are used when there is more condensable steam in the suction gas.

Before shutting down the rotary vane vacuum pump, the valve at the suction port should be closed to isolate it from the vacuum system, and then the pump should be shut down to check the limit vacuum of the rotary vane vacuum pump. The compressed vacuum gauge should be used. The vacuum gauge should be connected directly with the pump port of the rotary vane vacuum pump. It will reach the limit vacuum within 30 minutes. Before starting, check whether the cooling water of the water-cooled pump can be connected. When the ambient temperature is low, the belt pulley can be moved by hand so that the oil in the pump chamber can be discharged into the tank. Then press the motor button to send electricity, pay attention to whether the direction of power supply can be reversed, whether the direction of pump rotation is correct.

At the same time, the rotary vane vacuum pump can also adjust the vacuum required in practical work. It can set and display the vacuum (negative pressure) value in real time through the integrated digital liquid crystal panel. The flow rate of the vacuum pump can be adjusted in size. The rotary vane vacuum pump is equipped with high sensitivity import sensor, high quality flow regulating valve and precise control circuit to complete the automatic regulation. Functions, greatly saved the time and energy of developers; Rotary vane vacuum pump built-in low interference, long-life micro-vacuum pump; with the special silencing system of micro-air pump and independent shock absorption system, to ensure that intelligent vacuum pump can work for a long time, low noise and reliable.

Oil-Diffusion-Pumps-High-Vacuum-Pump-for-PVD-Coating-Machine

Air-suction-pump-electric-rotary-vane-vacuum-pump

water-ring-vacuum-pumps-for-mineral-separation-industry

High Vacuum Pumping Unit

Compared with the low vacuum unit, the high vacuum unit operates in the molecular flow state, which is characterized by low working pressure (10-2-10-6 pa), minimum exhaust and high pumping speed. The main pumps of the unit are usually diffusion pumps, diffusion booster pumps, molecular pumps, titanium sublimation pumps, cryogenic condensation pumps and so on. These pumps can not work directly on the atmosphere. Therefore, pre-pumps and front-stage pumps need to be equipped. Some high vacuum pumping units of diffusion pumps are equipped with front-stage maintenance pumps or gas storage masts to prevent pressure fluctuations and improve the performance of the unit.

(1) Pre-pumping. Pre-pumping (rough pumping) is mainly used to extract a large number of gases from the vacuum chamber, so that the gas pressure in the vacuum chamber can be reduced from atmospheric pressure to the vacuum degree when the main pump can start working. Therefore, the pressure of the pre-pumping is required to be less than the starting working pressure of the main pump. The pumping speed of the pre-pumping unit is determined by the rough pumping time. In order to improve the utilization rate of the vacuum unit, the pre-pumping unit is required to achieve a higher pumping speed. It can also be used as a front-stage pump. Vacuum valves are used to separate and switch between the two different functions.

(2) Maintenance pump. Due to the long start-up time of diffusion pump and oil booster pump, when loading and unloading in the vacuum chamber, the main pump is often closed in order to shorten the working cycle, so that the main pump is still in working state. Because the valve always has a very small amount of air leakage and surface bleeding, after a certain period of time, the pressure in the main pump chamber increases, which exceeds the maximum allowable pressure of the pump working yeast and causes the oxidation of the pump oil vapor. In order to solve this problem, one way is to use the front pump to continue pumping out the gas in the main pump, but at this time the gas discharged from the main pump is very small, there is a large horse cart of the front pump, which wastes energy. For this reason, another method can be adopted to stop the work of the front pump, close the valve of the front pipeline, and install a maintenance pump or gas storage inlay at the outlet of the main pump, so as to ensure that both the gas in the main pump can be discharged and the energy consumption can be saved. Gas storage tanks can not be made very different, they can only be used in small vacuum units with diffusion pumps as the main pumps, while maintenance pumps can be used in vacuum units with large main pumps.

(3) Gas storage tank. Small diffusion pump high vacuum pumping units are usually equipped with gas storage tanks, which are set between the diffusion pump and the front pump to store the gas discharged by the diffusion pump.

rotary-vane-vacuum-pump-in-water-pollution

Rotary-Vacuum-Pump-in-Power-Plant-Condenser

Vacuum-System-in-Food-Freeze-drying-Machine

Rotary-Vacuum-Pump-in-Coal-Smelting

Vacuum Pump Pumping Principle

Since the development of vacuum technology to such a wide pressure range, people have not developed a pump that can pump a container from the atmosphere to a high vacuum or ultra-high vacuum range.

Although all vacuum pumps are designed to reduce the number of gaseous molecules, the various types of pumps used to obtain low pressure involve several different principles. Vacuum pumping is based on one or more of the following principles.

Gas compression and expansion, used in piston pump, liquid column pump or water ring vacuum pump, rotary vane vacuum pump, Roots vacuum pump.

The drag force produced by the viscous effect is applied to the sub-steam jet pump.

The drag force produced by the diffusion effect is applied to the vapor diffusion pump.

Molecular drag force is used in molecular pumps.

Ionization effect is used in ion pump.

Physical or chemical suction is used in adsorption pumps, cryopumps and suction processes.

best-sales-double-stage-direct-drive-rotary-van-vacuum-pump

Best-High-Quality-liquid-ring-vacuum-pump-Price

Piston-Vacuum-Pump-in-Gas-Recovery

Two-stage water ring vacuum pump

Two-stage water-ring vacuum pump is a water-ring vacuum pump composed of two impellers in series on one pump shaft. Generally, the outer diameter of the second stage impeller is the same as that of the first stage impeller, but the width of the impeller is reduced by half. The gas is discharged after two stages of compression.

Characteristic:

1. Gas volume curve decreases more gently, so it still has larger gas volume under higher vacuum or higher exhaust pressure, and its working condition is stable. The single-stage single-acting water-ring vacuum pump has a sharp drop in gas volume at a higher vacuum (higher than the critical vacuum of the pump), and its work is very unstable. It has a greater noise and even vibration. Single-stage double-acting water ring vacuum pump can not achieve such a high vacuum.

2. Higher vacuum or exhaust pressure can be obtained than single stage water ring vacuum pump.

3. Two-stage water-ring vacuum pumps are especially suitable for combination with high vacuum pumps such as Roots pump and steam jet pump. As their pre-vacuum pumps, the whole unit can obtain stable pumping performance in a larger vacuum range.

4. Generally, it is single-acting in the axial direction, but also double-acting in the axial direction and radial direction. Its structure is more complex.

5. The structure of multi-stage water ring vacuum pump with two or more stages is complex, and its compression capacity is not proportional to the increase, so it is generally not used.

Singel-Stage-rotary-vane-Vacuum-Pump-for-refrigerating-system

water-cooling-type-Roots-vacuum-pump

Mini-effienct-dry-screw-vacuum-pump

Roots Vacuum Pump in Pharmaceutical Industry

Vacuum technology in medicine is mainly used in the production of medical devices and drugs. Effective use of these new medical devices will contribute to the success of surgery, effectively prolong the use of drugs, vaccines, blood and increase the effectiveness of use. Since the 1960s, vacuum technology has been used in high-speed centrifuges, electron microscopes and X-ray tubes.

Clinical vacuum aspiration: Clinical aspiration is often seen in surgery. Small pat suction is mainly used for needle aspiration. In general, the main aspiration patients after surgery congestion, pus, vomit, ascites and sputum. Obviously, these must adopt continuous suction method, and at the same time prevent the invasion of bacteria, that is to say, strict aseptic operation should be guaranteed.

After facial and thoracic surgery, a micro-mechanical pump is often used to remove phlegm in the throat of patients. But for the removal of congestion, pus, vomiting and ascites, there must be a suction device. Water ejector, steam ejector pump, water ring pump, slide valve mechanical pump, rotary vane mechanical pump and Roots pump are commonly used.

When using vacuum suction, there are certain requirements for the installation of vacuum pipeline, because with the start of the pump, it will quickly affect patients. The vacuum suction system of the vacuum suction device used in large hospitals can be operated by a vacuum pump, while many patients are treated by clinical suction. But each drainage pipe should be equipped with pressure and flow control, full plug and bacterial filter, at the same time, the quality of vacuum can be seen from audio and visual. This device is suitable for large surgical wards, avoiding the noise caused by using vacuum pumps separately, and reasonably improving the utilization rate of vacuum pumps. But with this vacuum suction system, the pipeline should be installed reasonably and the bacterial contamination of the vacuum pipeline should be avoided.

For vacuum aspirator, although the minimum pressure required is 50 Torr, the average pumping speed of vacuum aspirator can be as large as possible considering the disadvantages of long pipeline route, reduced flow conductivity and system leakage. The pressure regulating device can be used to select the suitable vacuum condition and the flow rate during suction. If a leak is found, it can be plugged in time.

In the specific operation, attention should be paid to the size of pumping speed. The pumping speed of the system is different from that of the actual pumping speed, because the designed pumping speed is for air, but in fact it is a kind of viscous liquid such as purulent blood and phlegm that is sucked. The flow rate of the suction fluid can be determined by adjusting the flow rate during suction, thus the actual pumping speed of the system can be estimated.

Vacuum-Pump-in-Food-Processing-Industry

Roots-Vacuum-Pump-maintenance

liquid-ring-vacuum-pump-Impeller

Liquid-Ring-Vacuum-Pump-system-maintenance

Water Ring Vacuum Pump Vacuum Dehydration

Vacuum dewatering is a commonly used process in paper industry. Vacuum dewatering treatment with water ring vacuum pump produced by our company is very complicated. It is a typical case of vacuum dewatering. The specific process of vacuum dewatering is described in detail below.

The general process flow of papermaking is as follows:

Raw material - slicing - Cooking - washing - Screening - bleaching - beating - vacuum dewatering (using water ring vacuum pump) - pressing dewatering - drying - shaping - leaving the factory.

The pulp after beating contains a lot of water, so the water in the pulp must be removed before it can be made into finished products. Vacuum dewatering is the first stage of pulp dewatering.

The vacuum dewatering process involves spraying pulp into a copper mesh with fine grids woven from copper wire. There is a vacuum box under the copper mesh belt at regular intervals. Under the vacuum box, a vacuum pipe is put into the vacuum pipe, and then the intake pipe of the water ring pump is connected.

Because of the vacuum caused by the water ring pump, the moisture in the pulp on the copper mesh belt can be sucked into the pipeline to achieve the purpose of dehydration.

Compact-Oilless-Dry-Scroll-Vacuum-Pump

Horizontal-Claw-type-dry-vacuum-pump


Two-stage-liquid-ring-vacuum-pump-in-coal-industry

rotary vane vacuum pump general assembly

For different types of pumps, different maintenance and assembly technicians, the assembly method is also different. Generally speaking, for non-lateral eccentric rotary vane pump and vacuum pump with reduced assembly clearance, the pump body should be put on the platform when assembling, and the fuel tank should be downward; if the fuel tank of some large and medium-sized pumps is not removed or the intake pipe is not disassembled and put on the platform inconveniently (when uneven), the supporting foot of the pump body can be clamped on the vise, and the oil tank of the pump body inverted is padded with wooden blocks as well. 。

The advantage of inverted assembly is that, due to the effect of the weight of the rotor body, the loaded rotor can be naturally tightened to the wall of the pump chamber, i.e. automatically aligned, thus ensuring the cut-off point division.

Of course, not all mechanical pumps need to be inverted, mainly depends on the principle of easy assembly. For example, the side eccentric pump can be inverted, forward or even side-mounted, that is, the outlet hole (the side of the valve oil window) down, and then assemble the rotor.

Whether it is inverted or formal, the assembly steps are basically the same. Taking the lateral eccentric 2X-8 pump as an example, the assembly steps are described as follows.

(1)Assemble the rotary blade: After the rotary blade is loaded with the spring, it is loaded into the rotor slot to try whether the movement is good or not.

(2) Install high rotor: first install large rotor with high vacuum end, tighten the high rotor with rotary blade, insert the low shaft end into the shaft hole of the middle diaphragm and set it straight. Suitable amount of vacuum pump oil should be lubricated in advance in the pump chamber, and vacuum hygiene should be paid attention to carefully. When assembling, attention should be paid to less touching parts with hands; in operation, fibers and dust should be avoided.

85-Kg-Weight-Oil-Free-Piston-Vacuum-Pump

two-stage-piston-type-vacuum-pump-for-aviation-sold-to-Russia

two-stage-oil-rotary-vane-vacuum-pump-for-refrigerator-absorption-chiller

Roots Vacuum Unit of daily Inspection

The full plastic horizontal water jet vacuum unit is used as the front pump, which can pump corrosive gases, no oil pump, on-off and off exhaust valves, complete isolation of crankcase and cylinder, and self-lubricating material is used for piston rings. On the basis of many years of scientific research and production experience, the high-efficiency and energy-saving products developed by HaoKaide Vacuum Technology are usually based on the advanced technology of similar products in the world. It is used to extract solid particles. It is advanced in design and novel in structure. It is suitable for various harsh and complex applications. It can suck the medium containing a large amount of water vapor and condensable vapor. It is not easy to occur danger when sucking inflammable, explosive or toxic, corrosive gases. Therefore, it can be widely used in machinery and fixed parts, which are covered by import and export pumps, thus realizing advanced oil-free lubrication. Clean ultra-high vacuum acquisition equipment consisting of front pipeline, water cut-off protector, molecular pump power supply, control power supply, etc. Easy installation, simple operation, easy connection and reliable performance. Its action is linked with the motor of the front-stage pump. When the sliding valve pump stops, it can automatically overload protection. The whole unit is installed on a rack, equipped with pipes, valves, electrical operation control box and cooling water pipe system. The unit is compact in structure and easy to use. This series of units in order to prevent oil reversal when the sliding valve pump shuts down.Diffusion-Pump-for-vacuum-process-systems

It is very important for the daily maintenance of Roots vacuum pump to make it use for a long time, and there will be no major malfunction in the application process. After a long period of use, there will be some minor problems in the equipment itself, pipeline and other auxiliary facilities. Although this is not a big malfunction, there is also one for the equipment. Only by solving these minor problems, which are not paid much attention to, can the application time of the equipment be prolonged and the application performance of various aspects be increased.

To do a good job in the daily maintenance of Roots vacuum pump, it is necessary to strengthen the accumulation of knowledge and carry out a detailed inspection of the different structures of the equipment, mainly including temperature measurement, whether the oil quantity is too much or too little, the load of the motor, whether the parts are loosened in long-term operation, and the wear and tear of the components, etc. It is a good job to do these works for the performance of the equipment. Guarantee, and through testing can effectively play the actual performance of equipment.Two-Stage-rotary-vane-Vacuum-Pump-for-refrigerating-system

Although this is only a small job, it is very important for Roots vacuum pump. Only by increasing the expansion of its application performance, can the equipment be improved. It is necessary to consider all aspects of application. Therefore, daily maintenance is one of the best ways to use the vacuum unit equipment.Liquid-ring-vacuum-pump-for-gold-or-coal-industry

rotary vane vacuum pump of pumping rate

For the customers who choose vacuum pumps, the pumping speed matching the working conditions is the first condition to choose vacuum pumps. Of course, we need to understand several pumping speed concepts in order to better choose the vacuum pumps. The pumping rate refers to the volume of the gas discharged by the rotary vane vacuum pump in a unit time. Vacuum pump pumping speed is divided into three definitions: geometric pumping speed, nominal pumping speed and actual pumping speed.water-liquid-ring-vacuum-pump-for-plastic-extruder-machine

I. Geometric Pumping Speed
Geometric pumping speed is the volume of gas pumped out in unit time when the pump operates at rated speed. Geometric pumping speed is the product of the volume of suction chamber Vs at the end of suction and the number of rotors N and z, that is:

Szh = n.Vs.Z = n.A.l.z

Section area of the suction chamber at the end of the suction

L is pump cavity width

2. Nominal pumping speed

Nominal pumping speed is the nameplate pumping rate that we usually see when the pump leaves the factory.high-flow-dry-vacuum-pump-manufacturer

3. Actual pumping speed
The so-called actual pumping speed is the pumping rate measured in the actual operation of the pump. At normal atmospheric pressure, the actual pumping speed should be equal to the nominal pumping speed. Considering the leakage loss in actual operation, the general design geometric pumping speed is 1.1 to 1.25 times the nominal pumping speed.

The actual pumping speed can be understood by using the principle of function, that is to say, the pressure at the pump inlet is equivalent to a function value. In the actual pumping process, the pressure at the pump inlet decreases with the decrease of the pressure at the pump inlet. When the inlet pressure equals the limit pressure, the actual pumping speed becomes zero. Therefore, we can calculate that the volume of the gas returned to the suction chamber through the gap is equal to the volume of the air pumped.Air-cooled-Roots-Vacuum-Pump-Unit-in-Thermal-Power-Plant

Water Ring Vacuum Pump Parts

When we first used the water ring vacuum pump, we didn't know much about its parts. Here's a brief introduction to the analysis of the parts of the water ring vacuum pump.

1. Water-ring vacuum pump: the main component that converts electric energy into mechanical energy.

2. Pump seat: It is the main body of the pump and plays a supporting and fixing role.

3. Impeller: The core part of water-ring vacuum pump. It has high speed and high output. The blades on the impeller play a major role. The impeller must pass static balance test before assembly. The inner and outer surfaces of impellers should be smooth to reduce the friction loss of water flow.H-150-Holding-vacuum-pump-for-PVD-coating-machine

Classification of impellers

Open impeller: It is suitable for conveying materials containing a large amount of suspended matter, with low efficiency and low liquid pressure.

Semi-closed impeller: It is suitable for conveying materials which are easy to precipitate or contain suspended particles such as solid particles and fibers, and its efficiency is also low.roots-vacuum-pump-for-metallizing-machine

Closed impeller: It is suitable for transporting clean liquid without impurities with high efficiency.

4. Axis of water-ring vacuum pump: The motor is connected, and it is the main part of transferring mechanical energy.

5. Mechanical seal: a device for preventing fluid leakage by keeping the sticker merged and sliding relatively.vacuum-furnace-desgin

There are many parts of water-ring vacuum pump. We should pay attention to them when we reuse them, so that we can use water-ring vacuum pump for a longer time.

SK liquid ring vacuum pump uses sugar industry

SK liquid ring vacuum pump is a kind of vacuum pumping equipment commonly used in manufacturing. It is mainly used for pumping the whole production. What kind of use is used in the sugar industry.single-stage-rotary-vacuum-pump-for-oil-vapor-recovery

1. In the whole process of sugar production, vacuum filtration, evaporation concentration, evaporation crystallization, etc. all need to be completed under vacuum, so it is strictly required to work continuously and last for a long time, and the durability is high.

2. In the filtration process of the sugar industry, SK vacuum pumping is required in the entire sugar production process, so it is required to pump high water content.

3. In the production of sugar, the vacuum pump must be large and stable when the SK vacuum pump is working in a high vacuum state.Lab-Test-Recirculating-Water-Vacuum-Pump

4. At the same time, it is required to have good wear resistance and meet the working environment and requirements of the sugar industry.

In sugar companies, SK vacuum pumps can use the vacuum generated by it to protect the sugar from corrosion, thus extending the shelf life. In addition, it can remove excess water, prevent sugar from getting wet, and its wear resistance is good.electric-motor-driven-water-ring-vacuum-pump-for-iron-ore-mining

Circulating Water Cooling Device of Water Ring Vacuum Unit

In the overall development process of water-ring vacuum unit, the performance strength of the product should be used to speed up the improvement of the overall application effect, promote the overall improvement of its quality and superiority level, highlight the application effect of the whole equipment, and continuously enhance the value advantage of its products on a reliable basis.

The water in the storage tank is pumped into the sprinkler one way and into the cooling water inlet of the unit the other way. The water in the sprinkler is ejected through a hundred small holes in the perforated plate effect, forming a lot of water going vertically downward.vacuum-pump-to-dewater-for-pulp-and-paper-industry

Under the action of exhaust fan, the water evaporates on the surface, dissipates heat and cools down, then returns to the storage tank. The distribution of the holes on the porous plate determines the position of the water column, so that the holes on the porous plate are evenly distributed, so that the air flow contacts the water column sufficiently and forms the largest swallow surface as possible, so as to achieve the purpose of water cooling.industrial-Paper-mill-special-roots-vacuum-pump


Considering that the depression of the water discharged from the water ring vacuum unit is quite different from the air temperature, the first stage of forced cooling by air cooling is designed. The water discharged from the water ring vacuum unit passes through the radiator first, the radiator is placed behind the fan, and the cooling air from the water to the radiator, thus cooling the hot water discharged from the diffusion pump, and then returning to the storage tank and cooling water in the diffusion pump. Flow can be observed directly in the device.vacuum-pumps-vacuum-distillation

How to Adjust Vacuum Degree of Vacuum Pump

Today, Xiaobian want to introduce to you how to regulate the vacuum degree of vacuum pumps knowledge, let's look at it together, hope to provide you with some help.220V-air-conditioning-single-stage-vacuum-pump

1. Many miniature vacuum pumps have no function of adjusting vacuum. Only by adding valves. For example, a precise relief valve is strung at the pumping end of the pump. When the vacuum is high, the valve is opened and the vacuum is lowered. The precise relief valve also has a directional discharge of toxic gases to the designated container channel, which is not the function of many valves.


2. If you want to be simpler, you can use an intelligent vacuum pump. There are buttons on the pump, which can set the negative pressure, and the LCD panel shows the negative pressure.wholesale-Single-Stage-Rotary-Vane-Vacuum-Pump

3. There is also a knob, which can adjust the flow of large and small. This kind of intelligent vacuum pump is also called AC vacuum pump and digital display vacuum pump.Laboratory-water-pump-circulating-vacuum-pump

Air-cooled Roots Vacuum Pump Construction

Because the series of pumps are processed by NC machining center, O-ring seals are used between the pump body, the two side caps and the two end caps. The cylindrical pins are positioned, and the parts are interchangeable and easy to maintain. Roots pump can not be used alone, only series front pump can be used.

Different vacuum pumps can be selected as the front pump, such as screw pump, oil seal pump, liquid ring pump, etc. It is worth mentioning that when screw pump and liquid ring pump are used as the first stage pump, they are especially suitable for the occasion where a large number of suspicious gases need to be removed.hot-sale-double-stage-rotary-vane-vacuum-pump

The company's patented technology is used in the dynamic seal part, and the imported oil seal is used to control the jump of the shaft seal less than 0.02mm, so there is no oil leakage at the shaft seal part. A self-weight valve is installed between the intake and exhaust ports of the pump. Its function is to open the valve automatically when the pressure difference between the exhaust ports and the intake ports exceeds the self-weight of the valve. This pressure difference is the pressure difference that the pump can operate reliably. Therefore, Roots pump with relief valve has the function of automatic overload prevention.Energy-saving-rotary-vane-vacuum-pump

How to Change Oil for Water Ring Vacuum Pump

Long-term use of water-ring vacuum pump may lead to wear and tear of its parts and equipment, so it is necessary to inject lubricating oil regularly to reduce friction between parts and play a protective role on the equipment itself. Do you know how to replace lubricating oil? If you don't know, you can refer to the method of oil change summarized in the following section:

1. Remove the vacuum system of the equipment, pad one end of the chassis motor higher, and open the oil discharge plug to release oil.Industrial-Single-Stage-Water-Cycle-vacuum-Pump

2. Turn the water ring vacuum pump and cover the exhaust port, so that all the dirty oil in the cavity is discharged from the outlet.

3. Add 100-500ml new oil from the intake port, rotate continuously for more than 5-10 turns, clean the interior, and operate 3-5 times accordingly.

4. After discharging the dirty oil, install the discharging plug, flatten the pump, and add new oil from the intake port and the filling hole respectively.water-ring-vacuum-pump-for-negative-pressure-suction

Here we also want to remind you that it is very important to choose the right lubricant for equipment. Because of the strict requirements for lubricants, we should remember the following points when choosing lubricants: lubricants should have appropriate viscosity and viscous-temperature characteristics; if the equipment is inhaled by corrosive gases, lubricants are required to have good corrosion resistance and emulsification resistance, in addition, we also need to take a test. Considering its limit pressure, this is an important performance index of lubricating oil.two-stage-oil-sealed-rotary-vane-vacuum-pump

2BV Water Ring Vacuum Pump Operation

As we all know, vacuum is used in many industries. 2BV water ring vacuum pump is a kind of equipment that can produce vacuum. In order to make the vacuum produced by pump applied in various fields, we must master its operating rules:

I. preparation

1. Start the working fluid supply pump and open the working fluid condenser valve.

2. Check whether the working fluid level is normal. If the liquid level is low, open the tap water valve to make up water.Roots-Vacuum-Pump-for-the-heavy-industry-and-waste-water-treatment

Two, operation

1. Start 2BV water ring vacuum pump and quickly open the intake valve.

2. Adjust the opening of the intake valve. If the noise of 2BV water ring vacuum pump is too loud, the intake valve should be closed down.

3. Slowly open the valve in the vacuum pipeline, and the production equipment can obtain the required vacuum.

4. Check every 30 minutes during operation. If abnormal sound or vibration is found, stop immediately and restart after troubleshooting.Roots-Vacuum-Pump-For-Transformer-Oil-Filtration-Machine

Three, shutdown

1. Close the vacuum tube valve.

2. Close the working fluid inlet valve and quickly close the 2BV water ring vacuum pump.

3. If there is no other water ring pump running, the working fluid supply pump and the working fluid cooler cold water valve should also be closed.

The operation of 2BV water ring vacuum pump has undergone preparatory work, operation, shutdown steps, opening the valve, adjusting parameters, and finally closing the valve after use, so that the pump can stop running and get a full rest.vacuum-furnace-product

Water Ring Vacuum Pump operation Process

Water ring vacuum pump must have been heard by everyone. Do you know how to operate it? Let Xiaobian tell you next.

1. Preparations before opening water ring vacuum pump

(1) check. Check carefully whether the connection between the parts is good.

(2) open. Open the intake valve of the water tank, fill the water tank to the prescribed water level, and open the suction valve and discharge valve of the water ring vacuum pump.Cheap-good-retail-price-hand-oil-free-manual-vacuum-pump

(3) close down. Close the vacuum whose intake valve and discharge valve.

2. Opening Water Ring Vacuum Pump

When everything is ready, the pump can be started. When the vacuum tank reaches a certain degree of vacuum, the suction valve can be opened and the centrifugal pump can be sucked and pumped. When the oil tank truck is sucked, the operation of the water ring vacuum pump is the same as that of the centrifugal pump.

3. Maintenance of Water Ring Vacuum Pump in Operation

In the operation of pumps, the staff should strictly observe their posts, concentrate their energy, observe carefully and do the following:

(1) Listen to the sound of the pump and motor running at any time.

(2) See whether the vacuum degree, the height of the liquid level of the vacuum tank, the circulating water in the water tank and the lubrication of bearings are normal.

(3) Touch whether the temperature of bearings and motors is normal by hand.

4. Stop Water Ring Vacuum PumpElectric-Rotary-Vane-Air-Conditioning-Vacuum-Pump

(1) First close the suction valve, then open the intake valve of the vacuum tank. Finally stop the pump.

(2) Vacuum vent valve. Close the valve.

Above is the operation process of water-ring vacuum pump, of course, it is also applicable to other water-ring vacuum pumps. When you do the above operation, you must pay attention to safety and close it after use.Factory-Direct-Sale-2BV-Water-Ring-Vacuum-Pump

2BV Vacuum Pump Characteristics

2BV vacuum pump is suitable for gas and water vapor extraction. The suction pressure can reach 33 mbar absolute pressure (97% vacuum degree). When 2BV vacuum pump works under the suction pressure close to the limit vacuum (saturated vapor pressure of working fluid), it should be connected with the cavitation protection pipe to protect the pump. The following are the main features of 2BV vacuum pump:Single-Stage-Rotary-Vacuum-Pump-for-Oil-Vapor-Recovery

1. Direct connection design of motor, saving space, easy installation and maintenance.

2. All the mechanical seals imported from abroad are used as standard configurations.

3. All of them are equipped with cavitation protection pipe interface. If they work under the limit pressure, opening the cavitation protection pipe interface (or connecting with the separator) can eliminate cavitation sound and protect the pump to the maximum extent of guaranteeing the suction effect.

4. 2BV vacuum pump series is equipped with stainless steel impeller, 2BV2 series is equipped with stainless steel disc/impeller. High strength, durable, and improve the corrosion resistance of the pump. If all the current-passing parts are made of stainless steel, they can work in a more harsh environment.Rotary-Vane-Vacuum-Pump-for-Big-Capacity-Rotary-Evaporator

5. Unique flexible exhaust port design will not produce over-compression, ensuring the efficiency of 2BV vacuum pump in its performance range.

6. All of them adopt Y2 series motors, IP54, IP55 (IP44), F class insulation (B class insulation) and NTN or NSK imported bearings.

7. 2BV vacuum pump can realize that all the flexible seals are PTFE, which can greatly prolong the service life of vacuum pump under harsh working conditions.ion-nitriding-furnace

2BV Vacuum Pump Protection System

In order to ensure that the service life of shaft bearing of 2BV vacuum pump is not less than 100000 hours, imported bearing is adopted in the design, the structure is optimized, the temperature protection function of bearing is increased, the lubrication condition of bearing is improved by oil lubrication, so that bearing can bear the axial and radial loads under any working conditions, and the structure is equipped with reducing the axial force and ensuring the balance of the axial force. Measures, the pump bearing is completely separated from the pumping water flow.2SK-dry-vacuum-pump-double-stage-liquid-ring-vacuum-suction-pump

At the same time, in order to improve the life of 2BV vacuum pump, most manufacturers at home and abroad are now working on the pump protection system, that is, when the pump leakage, overload, overtemperature and other faults can be automatically alarmed, and automatic shutdown for repairs.2BV-new-type-high-quality-high-performance-water-ring-vacuum-pump

However, we believe that it is necessary to set up a protection system in the 2BV vacuum pump, which can effectively protect the safe operation of the pump. But this is not the key to the problem, the protection system is only a remedy after the pump failure, is a more passive way. The key to the problem should be to start from the fundamental point of view and thoroughly solve the problems of sealing and overloading of pumps, which is a more active method. For this reason, we apply the hydrodynamic seal technology of auxiliary impeller and the non-overload design technology of pump to 2BV vacuum pump, which greatly improves the sealing reliability and load-bearing capacity of pump, and prolongs the service life of pump.
Each 2BV vacuum pump is controlled by a special control cabinet. The pump has the functions of automatic protection for overload, phase absence, short circuit, leakage, overtemperature and water immersion, which can ensure the reliable operation of the unit.Hot-sale-oil-free-Piston-vacuum-pump

2BV Vacuum Pump Working Principle

In the operation of 2BV vacuum pump, we generally need to master its basic performance and working object, how it works, and what effect it plays in the work, which will have absolute effect on our future use, so before that, we need to understand its working principle, so it will be much simpler to deal with the problem of failure in the later stage.

The impeller 3 is eccentrically installed in the body of 2BV vacuum pump and injects a certain height of water into the pump when starting. Therefore, when the impeller 3 rotates, water forms a rotating water ring 1 on the inner wall of the pump under the action of centrifugal force. The inner surface of the water ring is tangent to the hub and rotates along the arrow direction. During the first half of the rotation, the inner surface of the water ring gradually separates from the hub, so water is formed between the impeller blades and the hub. The annulus forms a closed space, with the impeller rotating, the space expands gradually, the space gas pressure decreases, and the gas is absorbed from the disk suction port; in the latter half-turn process, the inner surface of the water ring gradually approaches the hub, the space between the blades gradually reduces, the space gas pressure increases, and the gas between the blades is discharged from the disc exhaust port when the pressure is higher than the exhaust port pressure. In this way, whenever the impeller rotates one week, the space between the blades sucks and exhausts once. Many spaces work continuously, and the pump continuously sucks or presses gas.two-stage-high-pressure-rotary-vane-vacuum-pump-for-air-bleed

Because in the working process, work produces heat, which will heat the working water ring, and some water and gas are discharged together. Therefore, in the working process, it is necessary to continuously supply water to 2BV vacuum pump to cool and supplement the water consumed in the pump, so as to meet the working requirements of the pump.

When the gas discharged from the pump is no longer used, there is a gas-water separator connected to the exhaust port of the 2BV vacuum pump. After the exhaust gas and some water are discharged into the gas-water separator, the gas is separated from the exhaust pipe, and the remaining water is supplied to the pump through the return pipe for continued use. With the extension of working time, the temperature of working water will continue to rise. At this time, cold water should be supplied from the water supply pipe to reduce the temperature of working water and ensure that the pump can meet the required technical requirements and performance indicators.high-vacuum-turbomolecular-vacuum-pump-for-CVD-PVD-system-vacuum-measurement

The correct operation of 2BV vacuum pump is what we want to pay most attention to, not only if the method is affected, then the equipment will also cause the corresponding failure, which is very unfavorable for our use, so I hope you can grasp its working principle and improve the efficiency of work in time while operating correctly.induction-melting

Vacuum Pump Structural Characteristics

When 2BV vacuum pump works in vacuum with suction pressure close to the limit for a long time, it should be connected with cavitation protection pipe to protect the pump and eliminate cavitation sound. Today we have a look at the structural characteristics of the product.Two-Stage-Rotary-Vane-Vacuum-Pump-For-Vacuum-Generation

1. Running smoothly, noise can be as low as 62 decibels.

2. The mechanical seal is used as the standard configuration, which eliminates leakage and is easy to maintain.

3. The coaxial direct connection design of 2BV vacuum pump saves space and is easy to install.

4. Unified corrosion-resistant design, bronze impeller improves the corrosion resistance of the pump, stainless steel material is more suitable for the more stringent application of unique flexible exhaust design, will not produce over-compression, ensuring the best efficiency of 2BV vacuum pump in its performance range.hydraulic-double-pump-oil-vane-vacuum-pump

When 2BV vacuum pump is used as compressor, the power of 2BV pump will increase with the increase of exhaust pressure. When ordering, the exhaust pressure should be indicated to select the appropriate motor power.High-Flow-Micro-Rotary-Vane-Vacuum-Pump

rotary vane vacuum pump using precautions when

 The rotary vane vacuum pump can be used alone or as a fore pump for booster pumps, diffusion pumps, molecular pumps and titanium pumps.nonferrous-metals-smelting

     The rotary vane vacuum pump can be used for evacuation of vacuum coating, vacuum heat treatment, vacuum casting, tubes, bulbs, thermos, etc. This pump can also be equipped in medical and laboratory settings.Hot-Sale-Vacuum-Pump-for-vacuum-packing-insdustry

Rotary vane vacuum pumps should not be used to remove gases that are too high, harmful, explosive, corrosive to metals, chemically reactive to vacuum oil, contain particulate dust, or used to pump gas from one container to another. As a transfer pump. When an aeration valve is provided, an appropriate amount of condensable gas can be pumped.high-quality-Laboratory-double-stage-rotary-vane-vacuum-pump

Energy efficient water ring vacuum pump

  Water ring vacuum pumps and water ring compressors are high energy consumption and low efficiency products. It is a recognized fact that small pumps are generally 30-35%, large pumps up to 40% or slightly higher, so low efficiency and national electromechanical The requirements of the products and the current state of energy shortage in China are extremely incompatible.Clean-type-Oilless-dry-scroll-vacuum-pump-in-university-laboratory

    Therefore, the optimization design method should be adopted as soon as possible to establish mathematical models for the geometric parameters of the impeller which are the most critical to the efficiency of the pump and the starting position and area of ​​the suction and exhaust holes, optimize the design, select the optimal combination scheme of each parameter, and adopt The relevant theory and calculation formula of vapor-liquid two-phase flow are designed to minimize the eddy current loss of the water ring and achieve the purpose of improving efficiency. Therefore, designing and developing a highly efficient and energy-saving water ring vacuum pump and compressor as soon as possible to eliminate backward products with high energy consumption and low efficiency is an important task in the design and development and production of water ring vacuum pumps.High-pressure-single-stage-vacuum-pump-and-compressor

Our company is a backbone pump enterprise integrating scientific research, development, design, trial production, production, testing, sales and service. The company specializes in the production of water ring vacuum pumps, vacuum pumps, liquid ring vacuum pumps, stainless steel vacuum pumps and other types of vacuum pumps and vacuum pump units.2BV-series-stainless-steel-water-ring-vacuum-pump

How does the vacuum pump work?

With the demand for social work, vacuum pumps are being popularized and produced, and more and more people are using them. The understanding of it has gradually deepened, and there are many problems that they want to understand. Here is a brief introduction to the working principle of the vacuum pump.Mini-vacuum-pump-for-air-conditioner

  When the vacuum pump is running, due to the centrifugal force, the water forms a closed ring of approximately equal thickness depending on the shape of the pump chamber. The inner surface of the upper portion is just tangent to the impeller hub and the lower inner surface is just in contact with the tip of the blade. At this time, a crescent-shaped space is formed between the impeller hub and the water ring, and this space is divided by the impeller into a plurality of small cavities having the same number of blades. If the upper part of the impeller is 0°, the volume of the small cavity becomes smaller from 180° before the rotation, and it communicates with the suction port on the end face. At this time, the gas is sucked in, and when the inhalation is finished, the cavity is small. It is isolated from the suction port; when the impeller continues to rotate, the small cavity becomes larger and smaller, so that the gas is compressed; when the small cavity communicates with the exhaust port, the gas is discharged outside the vacuum pump.2SK-series-high-pressure-liquid-ring-vacuum-pump-for-oil-drilling

After reading the simple introduction above, I have a better understanding of it. I will understand that this is the case when I work, and it will work better in the future.diamond-vacuum-brazing-furnace

How to Select Vacuum Pump

The function of vacuum pump is to extract gas molecules from the vacuum chamber, reduce the gas pressure in the vacuum chamber, and make it meet the required vacuum degree. Generally speaking, there is a large range from atmosphere to very high vacuum. So far, no vacuum system can cover this range. Therefore, in order to meet the requirements of process index, working efficiency and equipment working life of different products, different vacuum sections need to choose different vacuum system configuration. In order to achieve the best configuration, the following points should be taken into account when choosing the vacuum system:Roots-vacuum-Pumps-For-PVD-Coating-Machines

1. Determine the working vacuum range - first of all, we must check and determine the vacuum required by each process. Because each process has its own suitable vacuum range, it must be carefully studied and determined.

2. Determine the limit vacuum degree - Check the limit vacuum degree of the vacuum pump system on the basis of determining the vacuum degree required by the process, because the limit vacuum degree of the system determines the best working vacuum degree of the system. Generally speaking, the limit vacuum of the system is 20% lower than the working vacuum of the system and 50% lower than the limit vacuum of the front pump.Rotary-Vane-Vacuum-Pump-or-Glass-Reactor

3. Types and volumes of pumped gases - Check and determine the types and volumes of pumped gases required by the process. Because if the type of pumped gas reacts with the liquid in the pump, the pump system will be polluted. At the same time, it must be considered to determine the appropriate exhaust time and the amount of gas produced in the process of exhaust.

Finally, we should consider the vacuum volume of the vacuum pump, check and determine the time required to achieve the required vacuum degree, the flow resistance and leakage of the vacuum pipeline, and consider that after meeting the required vacuum degree, we should maintain the required vacuum extraction rate under certain technological conditions.Slide-Vane-Rotary-Vacuum-Pump-for-Milking-Machine