Vacuum pipeline system of water jet vacuum pump

Water jet vacuum pump consists of nozzle, suction chamber, mixing pipe and diffuser (commonly known as tail pipe). The centrifugal pump is used to increase the water pressure, so that the water with a certain pressure is ejected from the nozzle with high speed jet. At this time, the energy of water changes from pressure to kinetic energy, and the surface pressure of the jet decreases rapidly. Due to the viscous and entraining effect of the high-speed jet on the surrounding gas, the air is continuously sucked in. High velocity moving water column and air flow form foam flow to the diffuser (tail tube) at the mixing pipe, and as the section enlarges, the flow velocity decreases and the pressure rises in the diffuser until the atmospheric pressure is higher than the atmospheric pressure and discharged into the atmosphere. It can be seen that if the tail pipe is too short, the vacuum pumping capacity of the water ejector will be reduced, and if the operation is not careful, it may also cause water backflow. 

In view of the problems existing in the vacuum system, we have taken the following measures for rectification:

1) The pipeline not conforming to the design in the vacuum system was completely replaced. The diameter of outlet pipe of centrifugal pump was changed from 70mm to 80mm, and the diameter of vacuum main pipe was changed from 50mm to 65mm;

2) The installation height of the water jet vacuum pump is raised by 1.4m as a whole, and a 1.2m long tail pipe is installed at the ejector outlet.

After the rectification of the vacuum system, the vacuum pump has played its due role, and the vacuum degree of the vacuum system has reached the design requirements. This rectification work puts forward higher requirements for technical personnel: when working, they should not rely on experience to work. They should first understand the structural principle of the equipment, be good at grasping the key points and breakthrough points of things, and avoid detours. This can be used for reference in future work.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

How to clean roots blower correctly

Roots blower is a volume rotary blower, the biggest characteristic is that when the pressure is adjusted within the allowable range, the flow rate is almost unchanged, the pressure selection range is wide, and it has the characteristics of providing forced gas. The medium should be free of oil. Simple structure, easy maintenance, long service life and small vibration. 

Roots blower is a kind of positive displacement blower, which can be used as vacuum auxiliary for suction. The two rotors rotate in the opposite direction to compress or remove gas. Both rotors are fixed on the synchronous gear set, so there is a small gap between the cylinder and the rotor during rotation, and they can not be contacted with each other.

When cleaning roots blower, we should pay attention to three requirements. The best way to prevent faults in Roots blower cleaning is to take correct cleaning method and clean the equipment regularly. Every day to do a good job of Roots blower maintenance work, reduce roots blower failure.

Care must be taken in cleaning roots blower motors. Be careful not to let oil drop into the motor. About the cleaning of the motor, clean it with a dry cleaning brush. Clean the outside and inside of the equipment with dry cloth. Keep the equipment dry enough to avoid moisture. The interior of Roots blower can not be wiped with wet cloth. If the water drops on the equipment, it will affect the use. Therefore, it is best to wipe the interior of the device with a clean cotton cloth. After cleaning roots blower equipment, wipe the external and internal parts of the equipment with dry rag to fully keep the equipment dry and prevent the equipment from expired.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

System composition of main vacuum system

The vacuum system of vacuum gas drying equipment consists of two parts: main vacuum system and leakage pump system. 

The main vacuum system is composed of the main pump (roots vacuum pump), front stage pump (rotary vane vacuum pump or slide valve vacuum pump), front stage condenser, central condenser, exhaust separator, steam pressure gauge, pipes, valves and other components. The effect is to vacuum the vacuum tank in the preparation stage, high vacuum stage and vacuum pump oil.

Although the kerosene in the vacuum system is exhausted during the depressurization stage, there is still residual kerosene in the insulation data. Therefore, in the high vacuum stage, the gas entering the main vacuum system still contains a certain amount of kerosene vapor, which will condense into liquid in the front condenser and the central condenser, while the water vapor component in the gas is discharged by the front stage pump and collected in the exhaust condenser.

The two front-stage pumps are also responsible for the mission of urgent spare time when the heat generator and vacuum tank are in trouble. Emergency evacuation is carried out through the pipe of valve 3 through the main condenser of the condensing system. The condenser is used to ensure that the hot gas of the fire oil condenses during the time of extraction, so as to make the steam of the fire oil less enter the vacuum unit.

VSD Vacuum Pump

Oil Sealed Rotary Screw Vacuum Pumps

Oil-Injected Screw Vacuum Pump

Principle of dry vacuum system in steel production

Steam jet pump was used as vacuum equipment in the production of high quality steel, which was also widely used in the world at that time. Its biggest disadvantage is high operating cost, large steam consumption and high energy cost. And every time before the formal use must try to pump a few heats to achieve the vacuum degree, just cleaned up the tank situation is more serious. In addition, due to the influence of superheated steam quality fluctuation, it is difficult to control the system working state and process stability. 

Due to the disadvantages of steam jet pump vacuum system, such as high energy consumption and large maintenance, the vacuum system composed of dry mechanical pump has been widely concerned. Among them, yazhilaide electric and Mechanical Co., Ltd. reformed the original steam pump group, and the dry vacuum pump was used to save electricity by 95%, and the maintenance free was realized. The results show that the time for the mechanical pump to reach the deep vacuum is less than 5 min, and the mass fraction of the treated molten steel is less than 0.00025%. The process effect can fully meet the requirements of high quality steel production specification including high quality heavy rail steel. 

Most mechanical vacuum pumps used in vacuum industry use oil, water or other polymers as the working medium of the pump, which plays a variety of functions such as cooling, sealing, lubricating and so on. With the development of science and technology and the expansion of vacuum application field, there are two urgent problems to be solved in the original mechanical vacuum pump and its pumping system: first, the backflow of the working medium of the pump pollutes the pumped container, which in many cases affects the quality and quantity of products and increases the maintenance cost of equipment. Secondly, due to the reaction material in some process, the medium in the vacuum pump is seriously deteriorated, so that the pump can not work normally.

For the ordinary oil-free vacuum system, although the oil sealed vacuum pump and the accessories such as cold trap or adsorption trap can be used to prevent backflow, it can not completely solve the problem and make the system complex. The ideal effect can be achieved by using a proper type of dry mechanical vacuum pump.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Characteristics and application of vacuum negative pressure station

Vacuum negative pressure station is commonly used in hospitals to provide the vacuum source of medical gas central station. The main structure is a complete set of system with water ring vacuum pump as the main part and vacuum buffer tank as vacuum storage equipment. The vacuum negative pressure device saves the cost and energy and improves the service life of the vacuum pump. 

As to the frequent use of vacuum source and the need for less pumping volume, the negative pressure station system wastes more power than the direct use of vacuum pump as vacuum source, and effectively extends the service life of vacuum pump and improves the economic benefits of the enterprise. The vacuum negative pressure station is composed of single or double vacuum pumps as the main equipment for vacuum acquisition and the vacuum tank as the vacuum storage equipment, The vacuum negative pressure station is formed by connecting the electrical control part, and the double pump task can enhance the guarantee of the system

Vacuum pumps and compressors are usually used to pump gases that do not contain solid particles, are insoluble in water, and are not corrosive, so as to form vacuum and pressure in closed containers. By changing the structural materials. Vacuum negative pressure station can also be used for pumping corrosive gas or using corrosive liquid as working fluid. Vacuum negative pressure station can be widely used in papermaking, chemical, petrochemical, light industry, pharmaceutical, food, metallurgy, building materials, electrical appliances, coal washing, mineral processing, chemical fertilizer and other industries.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

High performance vacuum unit

To expand the performance advantage of the overall improvement of the enterprise productivity, in the process of accelerating the driving of the product utilization advantage, we should make use of the advantage of the vacuum unit, accelerate the improvement of its product utilization ability, realize the continuous development of the product application performance and quality strength, increase the performance strength of the unit equipment through reasonable operation specifications, and further serve the enterprise Industry provides reliable equipment applications.

To speed up the overall development of enterprise productivity, we should make full use of the actual effect of all aspects of the application of the product, highlight the overall improvement of its advantages, highlight the driving force of the quality and performance of the vacuum unit in the application process of improving the application ability of the product, so that it will not Strengthen the performance of the product's own value ability and realize the overall promotion of the application effect in all aspects.

Through the vigorous application of the vacuum unit equipment, its high-performance product strength has highlighted the driving force of its overall advantages, expanded the application effect of the overall development of the enterprise, constantly improved its quality application advantages with reliable product application strength, and developed the overall improvement of all aspects of performance.

Vacuum Pump Oil Selection Guide

Vacuum Pump In Medical Compressed Air System

Water Ring Pump

What are the sealing requirements of vacuum pump

Vacuum pump is a common vacuum equipment, so what are the sealing requirements of vacuum pump?

Under its working pressure, the vacuum pump should be able to discharge all the gas produced in the process of vacuum equipment. Combine the vacuum pump correctly. Because of the selective pumping of vacuum pump, sometimes selecting one pump can not meet the pumping requirements. Several pumps need to be combined to supplement each other to meet the pumping requirements. For example, the titanium sublimation pump has a very high pumping speed for hydrogen, but it can't pump helium, while the three pole sputtering ion pump (or the two pole asymmetrical cathode sputtering ion pump) has a certain pumping speed for argon, and the combination of the two will make the vacuum device get a better vacuum degree.

Vacuum pump can not work under atmospheric pressure, need pre vacuum, some vacuum pump outlet pressure is lower than atmospheric pressure, need pre pump, so we need to combine the pump. Requirements of vacuum equipment for oil pollution. If the equipment is strictly oil-free, various oil pumps should be selected, such as: water ring pump, molecular sieve adsorption pump, sputtering ion pump, low temperature pump, etc. If the requirements are not strict, oil pump can be selected, and some anti oil pollution measures, such as cold trap, baffle, oil trap, etc., can also meet the requirements of clean vacuum.

The vacuum pump shall be installed in a solid place on the ground, and there shall be sufficient space around it for inspection, maintenance and repair. The foundation level shall be kept under the vacuum pump base. It is recommended to pad damping rubber or install it with bolts at the four corners of the base to ensure the smooth operation and small vibration of the vacuum pump.

The connecting pipeline between vacuum pump and system shall be sealed reliably. For small vacuum pump, metal pipeline connection gasket can be used, and oil-resistant rubber can be used. For small vacuum pump, vacuum rubber pipe connection can be used. The pipe diameter shall not be less than the suction diameter of vacuum pump, and the pipeline shall be short with few elbows.

Dry Scroll Vacuum Pump

Dry Screw Vacuum Pump

industrial vacuum pumps,vacuum furnaces

rotary vane vacuum pump working principle and application

rotary vane vacuum pump working principle and application

Most of the rotary vane vacuum pumps are small and medium vacuum pumps. There are two types of rotary vane vacuum pump: single stage rotary vane vacuum pump and double stage vacuum pump. The so-called two-stage rotary vane vacuum pump is to connect two single-stage pumps in series in structure. Generally, it is made of two-stage to obtain a higher vacuum. The relationship between the pumping speed and the inlet pressure of the rotary vane vacuum pump is as follows: under the inlet pressure of 1333pa, 1.33pa and 1.33 × 10-1 (PA), the pumping speed shall not be lower than 95%, 50% and 20% of the nominal pumping speed of the pump respectively.

The working principle of two-stage pump is composed of two single-stage pumps in series. During operation, the extracted gas enters the high vacuum stage through the suction tube first. When the suction gas pressure is high, one part of the gas is discharged by the exhaust valve 2, and the other part is discharged by the exhaust valve 1 through the low vacuum stage. When the suction pressure is low, though compressed by high vacuum level, exhaust valve 2 can't be opened for exhaust, so it can only be compressed by low vacuum level and discharged by exhaust valve 1, because the limit vacuum of two-stage pump is higher than that of single-stage pump.

Vacuum pump is widely used in metallurgy, machinery, military industry, electronics, chemical industry, light industry, petroleum, medicine and other production and scientific research departments. It has been widely used in food vacuum packaging and plastic industry vacuum forming. Paper conveying, vacuum fixture and vacuum suction in printing industry.

What Is A Single Stage Rotary Vane Vacuum Pump

Water Ring Pump

Water Ring Vacuum Pump

Vacuum pump and its type

A container is placed in a natural environment. If the internal gas pressure is not changed, the internal and external gas pressure of the container will reach a state of equilibrium, which is numerically equal to atmospheric pressure. In order to make the inside of the container reach the vacuum state, it is necessary to discharge the gas inside the container so that the internal gas pressure is less than the external atmospheric pressure. A vacuum pump is a kind of equipment that uses mechanical, physical, chemical or physicochemical methods to discharge gas from the container to obtain vacuum.

According to its working principle, vacuum pump can be divided into two types: compression type (variable volume type) and adsorption type. The working principle of compression vacuum pump is to compress the gas at the inlet end of the pump to the outlet end and discharge it to the outside of the pump. Common compression vacuum pumps are: rotary mechanical pump using expansion compression discharge process, turbine molecular pump using turbine blades to exhaust gas, etc. The working principle of adsorption vacuum pump is to adsorb gas in the pump body, which has achieved the purpose of reducing gas pressure.

Common adsorption vacuum pumps include: ion pump with ionization suction, adsorption pump with physical or chemical adsorption, suction pump and low-temperature condensate pump, etc. The biggest difference between the adsorption vacuum pump and the compression vacuum pump is that the adsorption vacuum pump does not discharge the gas out of the pump, but store it in the pump. The former can achieve higher vacuum degree than the latter, but the pumping speed is small, and the applicable container is also small. The vacuum resistance furnace adopts compression vacuum pump, such as mechanical pump, roots pump and diffusion pump.

All kinds of vacuum pumps have their own working range. Some pumps can work directly from the atmospheric state, such as mechanical pumps and adsorption pumps. Some pumps cannot work directly from the atmospheric state, such as diffusion pumps, molecular pumps, ion pumps, etc. only when the inlet vacuum reaches a certain value can they start to work.

Rotary Vane Vacuum Pump In Compressed Air

Vacuum Pump In Nitrogen Replacement Device

Vacuum Pump In Vacuum Distillation

Selection of water ring vacuum pump

Selection of water ring vacuum pump

The type of water ring vacuum pump is mainly determined by the pumped medium, air volume required for operation, vacuum degree or exhaust pressure.

There are two points to pay attention to after the water ring vacuum pump works normally:

1. As far as possible, the vacuum degree of the selected vacuum pump is required to operate in the high efficiency range, that is, in the critical vacuum degree or the critical exhaust pressure area, so as to ensure that the vacuum pump can work normally according to the required conditions and requirements. Operation near the maximum vacuum degree or the maximum exhaust pressure range of the vacuum pump shall be avoided. In this area, not only the efficiency is very low, but also the work is very unstable, which is easy to make the vacuum pump produce vibration and noise. For vacuum pumps with high vacuum degree, cavitation often occurs when they operate in this area. The obvious phenomenon is noise and vibration in the vacuum pump. Excessive cavitation will cause damage to pump body, impeller and other parts, so that the vacuum pump can not work normally.

It can be seen that when the vacuum degree or gas pressure required by the vacuum pump is not high, it can be selected preferentially in the single-stage pump. If the requirements for vacuum degree or exhaust pressure are high, the single-stage pump is often unable to meet the requirements, or the pump is still required to have a large amount of gas under the condition of high vacuum degree, that is, the performance curve is required to be relatively flat under the condition of high vacuum degree, so the two-stage pump can be selected. If the vacuum degree is required to be above - 710mmhg, roots water ring vacuum unit can be selected as the vacuum pumping device.

industrial vacuum pumps,vacuum furnaces

Roots vacuum pump

Liquid Ring Vacuum compressor

vacuum pump in lithium battery industry

As a very special metal, lithium is suitable for the environment with high requirements, so there are very high requirements for processing and use. Now the technology is getting better and better, making lithium become the mainstream direction in the field of lithium battery, and the development prospect of lithium battery is very good. If you want to have a high cycle life of lithium battery, you need to use vacuum pump

In the production of lithium battery, the most commonly used one is that we know vacuum handling and adsorption. In the realization of automation in life, this kind of rotary vane vacuum pump can be realized. In addition, rotary vane vacuum pump will be used in the oven and liquid injection packaging. In the oven, the vacuum requirements are relatively high, above - 95kpa, the higher the better, the lower the liquid injection requirements. Part of the plant is made into a central vacuum system for the whole plant, which can also be separated. Because of the corrosiveness of the extracted gas, attention should be paid when selecting the pump.

Vacuum Pump Maintenance Details

Best Water Ring Vacuum Pump

What is water ring vacuum pump

Vacuum pump for basic instruments in pharmaceutical chemistry

Vacuum pump for basic instruments in pharmaceutical chemistry

Vacuum pump is one of the most commonly used equipment in the laboratory, which is often used in the situation of high vacuum requirements. The efficiency of the vacuum pump depends on the structure of the pump and the quality of the oil (the lower the vapor pressure of the oil is, the better). A good vacuum pump can pump a vacuum degree of 10-100pa. The more precise the structure of the oil pump, the higher the requirements of the working conditions.

II. Operation steps

After connecting all conduits, turn on the switch.

III. precautions

(1) the selection of vacuum pump shall be suitable for the use conditions, such as vacuum degree, pumping rate, power supply voltage, etc.

(2) the vacuum pump shall be placed in a clean and dry place. Clean and change oil regularly. Kerosene or straight run gasoline shall be used for cleaning. After cleaning, all parts shall be dried, air dried or blow dried with a blower. When changing oil, clean vacuum pump oil shall be used. If other oil is used instead, the vacuum degree will be seriously affected.

(3) the vacuum system and the pipes connected with the pump shall be short and thick, and the joints shall be minimized. All joints shall be strictly sealed to ensure no air leakage.

(4) if the temperature of the extracted gas is higher than 40 ℃, a gas cooling device shall be added. If there is liquid drop, condensation dehumidification device shall be added. If the extracted gas is corrosive or has chemical reaction with oil, absorption and neutralization device shall be added.

(5) before starting the pump, check whether the rotation direction of the motor is correct (when checking the rotation direction, take off the drive belt first to avoid oil gushing out when the motor reverses), whether the lubrication system is reliable and whether the oil volume is appropriate.

(6) the oil temperature of vacuum pump during operation shall not exceed 75 ℃, and there shall be no noise and vibration, otherwise, it shall be shut down for maintenance.

(7) when stopping the pump, first close the valve connecting the vacuum system and open the vent valve to prevent the pump oil from being sucked back into the vacuum system, and then cut off the power supply of the motor.

(8) the vacuum pump shall not be used to pump the liquid with low boiling point. Therefore, the system to be pumped shall pump out the solvent with low boiling point before using the vacuum pump.

VACUUM FURNACE 

industrial vacuum pumps,vacuum furnaces 

Heat treatment equipment

Can rotary vane vacuum pump use oil?

Some users of rotary vane vacuum pumps use ordinary oil instead of special oil for vacuum pumps in order to save costs. In fact, this not only increases the cost of use and maintenance of vacuum pumps, but also seriously affects the service life of vacuum pumps. This chapter mainly describes why rotary vane vacuum pumps choose special oil for vacuum pumps.

1. The special oil for vacuum pump has a certain viscosity. The high or low viscosity determines the sealing performance of the vacuum pump. The low viscosity makes the sealing performance worse. If the viscosity is too high, the friction between the blade and the cylinder body will be increased, and the lubrication will become worse. At the same time, the rotation of the rotor will become difficult, the pressure of the motor will become higher and higher, and the oil temperature will become higher and higher. The increase of oil temperature will accelerate the emulsification degree of pump oil, which will affect the vacuum degree. Can rotary vane vacuum pump use oil?

2. The chemical properties of the special oil for vacuum pumps tend to be more stable, and the contents of water, water-soluble acid, insoluble alkali and other impurities are much smaller. The use of the special oil can effectively avoid the problem of replacing the vacuum pump oil many times and ensuring the cleanliness of the pump.

3. The saturated vapor pressure of the special oil for vacuum pumps should be low, and the volatile lightweight neptunium should be less. If ordinary vacuum pump oil or engine oil is easy to volatilize, the use of non-vacuum pump oil is facing the situation of frequent refueling.

From the above points, it can be seen that the use of regular vacuum pump oil can effectively prevent the emulsification, carbonization of pump oil and other adverse factors to the vacuum pump, fundamentally solve the difficulty of maintenance of the vacuum pump, improve the service life of the vacuum pump.

Gas-Liquid-Ring-Vacuum-Pump

Oil-Sealed-Piston-Rotary-Industrial-Vacuum-Pumps

Samll-Volume-Rotary-Vane-Vacuum-Pump

Safety Performance of Water Ring Vacuum Pump

Water ring vacuum pump has a wide range of applications and involves many industries. Some enterprises with complex working environment attach great importance to the safety of equipment. Therefore, in the process of selecting products for application, we should increase the effect of actual use of products, provide reliable safety performance for production, and further enhance the actual development capacity of products. The application performance of the equipment should be enhanced according to the requirements of the enterprise, so as to realize the application ability of the product quickly.

As a high-efficiency and energy-saving water ring vacuum pump, its overall application ability is relatively capable in the whole product. In the process of improving product control, we should provide reliable safety guarantee for the production of enterprises and enhance the optimization of its strength in all aspects according to its product strength and strong product advantages, so as to further expand the reality of its development in all aspects. Strength, with faster product applicability, enhance its overall development advantages, speed up the performance of products in the actual application process.

Whether it is water ring vacuum pump or other application equipment, its safe and reliable performance is the key to improve production efficiency. While making full use of the product, we should base on its actual production experience and constantly develop the product strength to show the application value of the product with higher development advantages.

How-to-Select-Dry-Vacuum-Pump

How-to-Maintain-Axis-of-Water-Ring-Vacuum-Pump

liquid-ring-vacuum-pump-system-Advantages

Water Ring Vacuum Pump Equipment Knowledge Introduction

Start-up of water ring vacuum pump equipment: Before the long-term stop water ring vacuum pump equipment is started, it is necessary to rotate several times by hand to prove that there is no jam or other damage in the pump. First of all, we should pay attention to opening the exhaust pipe valve, then we should start the motor (pay attention to the positive and reverse of the motor); then, we should gradually increase the water supply until the water supply meet the requirements of the rules (pay attention not to dry running the vacuum pump). Stop of water ring vacuum pump equipment: When water ring vacuum pump equipment is stopped, attention should be paid to closing the valve on the intake pipe (if there is a valve in the intake pipe), and then the water supply pipe should be closed, and the vacuum pump should be shut down quickly; after stopping, attention should be paid to discharging the water in the pump chamber, so as to avoid the blade and pump shaft breaking when starting again. Water ring vacuum pump equipment: When the water ring vacuum pump equipment and the compressor are in operation, the degree of top suction on the surface of the device is concerned, and then, when the device is installed, the bolt device is used to strengthen the hole through the bottom corner. In order to avoid welding slag entering vacuum pump during installation, filter screen should be installed on suction pipe during installation.

About the device of gas-water separator in water ring vacuum pump equipment: The air-water separator can be installed directly on the exhaust port of the vacuum pump, and then it should be fixed with bolts. The air-water separator has a pipeline connected with the pump, thus supplying the working water requirement of the pump. The other working water is supplied by the water supply pipe, and the size of the water supply is regulated by the valve on the pipeline. A backstop valve should be installed on the intake pipe of the vacuum pump or the compressor so as to avoid the water in the vacuum pump or the compressor returning to the system under the pressure of the exhaust pipe when it stops. Maintenance of water ring vacuum pump equipment: When water ring vacuum pump equipment is in use, in order to prevent abrasion of impeller, pump body or blocking impeller, dust particles entering pump chamber with gas and working fluid should be washed out through the flushing port at the bottom of pump. If hard water is used as working fluid, the water ring vacuum pump must be softened or cleaned with solution in a certain period.

Rotary-Vane-Vacuum-Pump-Price

air-pump-ring-blower-vacuum-pump

Air-Cooled-Oil-Free-Dry-Screw-Vacuum-Pump

transparent-high-pressure-booster-diffusion-Pump-oils

Reasons for Heating of Water Ring Vacuum Pump

1. The amount of circulating water is too little. There are two uses of circulating water. One is to cool the vacuum pump. The other is that water forms a water ring in the pump chamber when the impeller rotates. The air compresses the air in the water ring when the impeller rotates. 2. The temperature of the gas sucked by the vacuum pump is higher and the vacuum degree of circulating water is lower than 30 degrees. After running continuously for one day, the vacuum pump produces scale in the pump just like the kettle that boils water at home. When the impeller runs difficultly, the increase of friction causes the heat of the vacuum pump.

Exclusion methods:

1. The motor passport is dismantled. Whether the fan wings of the motor are flexible or not, there is no scale. When it is hard to operate, the exhaust pipe of the pump is dismantled and the scale inside is checked with the hand lamp. Scale will make the impeller difficult to operate, burn down the motor, and the spring of the mechanical seal will be easily locked on the shaft because of the scale. After the end surface is worn out, it can not be supplied automatically, resulting in leakage of the mechanical seal. Water burns down the motor.

2. Vacuum pump is a pumping pump, which permits a small amount of liquid. If the material sucked contains a large amount of water, buffer tank should be installed in front of the vacuum pump. If the vacuum pump sucks a large amount of water, it will break the impeller.

3. Vacuum pump sucks high gas temperature, using tap water as circulating water or using condenser to cool the gas. Attention: Vacuum pump must install overload protector to prevent overload burning motor. Connecting pipeline can not be thinned by 70%. Excessive thin pipeline and poor drainage can also cause overcurrent of motor.

ZJ-Series-Roots-Vacuum-Pumps

Diffusion-Pump-Vacuum-Unit

Water-Ring-Vacuum-Negative-Pressure-Station

2SK-Series-Two-stage-Water-Ring-Vacuum-Pump

Vacuum Pumps Types

If a container is placed in natural environment, if the gas pressure inside the container is not changed, the gas pressure inside and outside the container reaches equilibrium state, which is equal to atmospheric pressure numerically. In order to achieve a vacuum inside the container, the gas inside the container must be discharged, so that the pressure of the gas inside the container is less than the pressure of the external atmosphere. Using mechanical, physical, chemical or physical chemical methods, the equipment that obtains the vacuum from the gas discharged from the container is called the vacuum pump. Vacuum pumps can be classified into compression type (varistor type) and adsorption type according to their working principles. The working principle of the compressed vacuum pump is to compress the gas at the inlet end of the pump to the outlet end and discharge it out of the pump.

Common compression vacuum pumps are: rotating mechanical pumps using expansion-compression-discharge process, turbomolecular pumps using turbine blades to remove the body, etc. The working principle of the adsorption vacuum pump is to adsorb the gas in the pump body, which has achieved the goal of reducing the gas pressure. Common adsorptive vacuum pumps are: ion pumps using ionization suction, adsorption pumps using physical or chemical adsorption, suction pumps and cryogenic condensation pumps. The biggest difference between the adsorption vacuum pump and the compression vacuum pump is that the adsorption vacuum pump does not discharge the gas out of the pump, but stores it in the pump. The vacuum degree of the former is higher than that of the latter, but the pumping speed is smaller and the suitable container is smaller. Vacuum resistance furnace uses compressed vacuum pumps, such as mechanical pumps, Roots vacuum pumps and diffusion pumps.

Various types of vacuum pumps have their own working scope. Some pumps can work directly from the atmospheric state, such as mechanical pumps and adsorption pumps. Some pumps can not work directly from the atmospheric state, such as diffusion vacuum pumps, molecular pumps, ion pumps and so on. Only when the inlet vacuum reaches a certain value can they start to work.

oil-rotary/WX-series-oil-free-rotary-vane-vacuum-pump

2XZ-Series-Two-stage-High-Speed-Rotary-Vacuum-Pump

X-Series-Single-Stage-Rotary-Vacuum-Pump

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

Factory Price Rotary Vane Type Vacuum Pump

rotary vane vacuum pump advantages:

1. Compact size, light weight, low noise.
2. The automatic return oil check, oil does not return.
3. No pollution, energy-saving, nice appearance.
4. Competitive price and easy to operate.vacuum-pump-in-semiconductor-process

rotary vane vacuum pump applications:

  Widely used in electronic, refrigeration, light source, chemical industry, medical treatment, glass liner packing, evaporation and dry industries and so on. Can be installed with booster pump, diffusion pump and molecular pump as the first stage pump, easily start as it equipped a valve on the axis to prevent oil returning to the pump chamber when stopping the pump, prolong the life of pump oil with the installation of a gas ballast valve to avoid vapor condensates and mixes into pump oil. Oil mist trap equipment also installed to protect the environment.Roots_Vacuum_Pump

rotary vane vacuum pump pictures :

Roots Vacuum Pump Introduction

Roots vacuum pump Removal and assembly :

When the supercharged pump is disassembled and reassembled, the following precautions should be taken:

1. Before the Roots vacuum pump is dismantled, the clearance of each part of the rotor is measured and recorded.

2. Avoid hammering as much as possible. The parts removed should not be bruised and kept properly.

3. Record in detail the reasons for replacement of parts and components that need to be replaced and their usage.

4. Before reassembling Roots vacuum pump, all parts must be cleaned and burrs repaired.Roots_Vacuum_Pump

5. The "106" silicone rubber coating is used for the static sealing surface without gasket or seal ring. Vacuum coke grease should be applied to clean and sealed rubber seals. Sealing rings on relief valves of vacuum pumps with relief valves and flat surfaces shall not be coated with Renke grease.

6. Adjust the clearance of each part of the rotor according to the clearance list.

7. Leakage must be checked after all are installed.

8. Trial operation and necessary performance test should be carried out after reinstallation. It can not be installed and used until it is normal.

Roots Vacuum Pump Maintenance

(1) Regular inspection of Roots vacuum pump:

1. Daily inspection:

(a) Oil level inspection: excessive oil makes the temperature rise, and excessive oil, resulting in poor lubrication.

B) Temperature check: check the temperature of each part of the pump with a thermometer.

C) Motor load inspection: measuring motor load with power meter or current and voltmeter.



2. Roots Vacuum Pump Monthly Inspection:

Whether the coupling and gasket are damaged or loosened.



3. Roots vacuum pump is inspected every 3 months.

Whether the lubricating oil in the gearbox has deteriorated or not.



4. Roots vacuum pump is inspected every six months.

A) Whether the lubricating oil in the bearing box of the front cover has deteriorated.

B) Whether the piston ring and piston ring bushing are worn or not.

C) Whether micro-wear of gears affects the normal operation of the rotor and whether it needs to be adjusted.roots-vacuum-pump-manufacturing