Application and development of water ring vacuum pump

In the development of water ring vacuum pump value strength play, expand its practical application and quality ability of the drive, constantly improve the overall use of products and quality strength of the drive, reflecting the improvement of the overall use of strength, so as to expand the actual use of the strength of the performance, from all aspects of practical performance, increase the promotion of the role of the overall advantage of the product, the use of product performance belt Dynamic, with reliable practical advantages to enhance the strength of its products, so as to speed up the embodiment of its actual application effect. 

To speed up the overall strength of the application performance development of water ring vacuum pump, promote the embodiment of its product application and other practical value, and strengthen the improvement of product application and performance practical effect, Schindler vacuum pump in order to reflect the practical effect of the product performance of water ring vacuum pump, it is necessary to expand the embodiment of its product performance with the overall driven quality strength, so as to make it the basis of strength performance in all aspects On this basis, enhance the quality and effect of products, expand the overall development of all aspects of the use of strength.

From all aspects of the use of the effect of the product reflects the use of the basis, so that in a reliable level of overall application, expand its product strength, further expand the use of performance, to expand the use of all aspects of its strength, enhance the overall improvement of product performance strength, expand its quality performance.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Limit pressure of water ring vacuum pump

As each water ring vacuum pump manufacturer's products are different, so the parameters are also different. But their pressure is determined by the structure and quality. Users can judge the limit pressure of water ring vacuum pump according to the following two points: 

1. Limit relative pressure: the relative pressure is how much lower the measured internal pressure is than "atmospheric pressure". Because the air inside the container is pumped, the pressure inside the container is always lower than that outside the container. Therefore, when expressed in terms of relative pressure or gauge pressure, the value must be preceded by a negative sign, indicating that the internal pressure of the container is lower than the external pressure.

2. Ultimate absolute pressure: absolute pressure is the pressure higher than the theoretical vacuum. It compares the absolute vacuum pressure of the theoretical state. Due to the limitation of technology, we can't pump the internal pressure to the absolute vacuum value of 0Pa in any case. Therefore, the vacuum value pumped by the water ring vacuum pump is higher than the theoretical vacuum value.

Steam Jet Vacuum Pump Knowledge

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Wear reason of glass fiber reinforced plastic water ring vacuum pump

The wear of glass fiber reinforced plastic water ring vacuum pump is essential, so what is the cause of its wear? Let's analyze the wear factors of glass fiber reinforced plastic water ring vacuum pump together 

The wear of the journal surface of glass fiber reinforced plastic water ring vacuum pump is uneven. The radial wear of the main journal and the connecting rod journal is mainly elliptical, and the maximum wear parts are corresponding to each other, that is, the maximum wear place of each main journal is close to the side of the connecting rod journal, and the maximum wear place of the connecting rod journal is also close to the side of the main journal. The crankshaft journal also has conical wear along the axial direction. The elliptical wear of journal is caused by the uneven distribution of the force acting on the journal along the circumference

When the engine is working, the comprehensive force acting on the connecting rod journal always acts on the inner side of the connecting rod journal, and the direction is outward along the radius of the crankshaft, resulting in the maximum wear on the inner side of the connecting rod journal and forming an ellipse. The reason for the conical wear of the connecting rod journal is that the oil passage leading to the connecting rod journal is inclined. When the glass fiber reinforced plastic water ring vacuum pump rotates, the mechanical impurities in the lubricating oil accumulate on one side of the connecting rod journal under the action of centrifugal force, which accelerates the wear of the side journal and makes the wear of the connecting rod journal cone-shaped.

In addition, the bending of the connecting rod, the cylinder center line is not vertical to the center line of the glass fiber reinforced plastic water ring vacuum pump, etc., will make the axial force of the journal uneven, resulting in wear deflection. The wear of the main journal is elliptical, which is mainly due to the influence of centrifugal force of connecting rod, connecting rod journal and crank arm, which makes the relative wear between the side close to the connecting rod journal and the bearing larger. In addition, abrasions and burns may occur on the surface of the journal. Scuffing is mainly due to the oil is not clean, which large hard mechanical impurities in the journal surface scratch caused. The burn on the surface of journal is caused by Bush burning, which is mainly caused by insufficient lubrication, too thin oil and blocked oil circuit.

API 681 Liquid Ring Systems

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Maintenance of 2XZ rotary vane vacuum pump

The maintenance of 2XZ rotary vane vacuum pump is the key to maintain the safe and long-term operation of 2XZ rotary vane vacuum pump 

1. Keep the 2XZ rotary vane vacuum pump clean to prevent foreign matters from entering the pump;

2. Keep the oil level and do not run without oil;

3. Pay attention to observe the cleanness of the oil. If the pump oil becomes dirty, turbid, enters water or other volatile substances and affects the limit vacuum, the pump oil should be replaced in time. To replace the new oil, first start the pump and run for 30 minutes to make the pump oil thinner. Stop the pump and drain the oil from the oil drain hole. Then, open the air inlet to run for 1-2 minutes. During this time, a small amount of clean pump oil can be added from the air inlet to replace the oil in the pump cavity. After confirming that the pump has been cleaned several times, install the oil drain plug, and then inject clean pump oil from the oil filling hole to the oil level line;

4. When it is not used for a long time, it should be covered with suction and exhaust caps and placed in a dry place, and attention should be paid to moisture and rust prevention;

5. If it needs to be disassembled and overhauled, it must be carried out by professionals who have certain experience in repairing the pump, or contact the manufacturer.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces 

Technical knowledge of water ring vacuum pump

 First of all, we should understand the working range of vacuum pump and water ring, but we should pay more attention to the application of water ring and water ring? 

Water ring vacuum pump can also be simply called water ring pump. It is a kind of rotary variable volume vacuum pump which can change the volume. It is mainly composed of impeller, pump body, suction and exhaust disc, suction port, exhaust port, auxiliary exhaust valve and other parts. When working, it mainly rotates at high speed through the eccentric rotor with fixed blades inside, throwing the medium into the pump body through the suction process to the stator The liquid ring, which is concentric with the stator, is formed by external force. The liquid ring and the high-speed rotating fixed blade constitute a kind of variable volume vacuum pump with variable volume.

The working principle of water ring vacuum pump is to fill the pump first, that is to avoid the rotor idling and inject appropriate amount of water. When the pump starts according to the start-up procedure, with the high-speed rotation of the fixed blade, the filled water also runs at high speed due to external force, resulting in centrifugal effect, and forms a water ring in the outer ring of the fixed blade. When the fixed blade is rotated to be connected with the suction port and the exhaust port, the suction process and exhaust process are carried out respectively. During the suction process, the volume of the small chamber gradually increases from small to large. During the exhaust process, due to the continuous rotation of the impeller, the gas is compressed, and the gas is discharged when connected with the exhaust port.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Positive displacement vacuum pump

Claw vacuum pump is not only a kind of positive displacement vacuum pump, but also a dry vacuum pump. 

Claw vacuum pump, like roots vacuum pump and screw vacuum pump, is a non-contact dry vacuum pump. In general, in order to achieve a certain compression ratio, rotational speed and dynamic balance, claw vacuum pump is usually composed of multi-stage claw rotor in series or roots rotor and multi-stage claw rotor in series. At present, three-stage claw rotor and one-stage roots rotor are commonly used, or four-stage claw rotor is connected in series. The performance of roots plus claw type is generally better than that of claw type vacuum pump.

In multi-stage claw vacuum pump, according to the form of rotor, phase difference and diaphragm, it can be divided into spiral type, anti claw type and spiral anti claw type, and their performance is also different.

For claw type vacuum energy, the higher the rotating speed, the greater the compression ratio. In general, the speed of claw vacuum pump is 3000r / min, and the limit pressure is 1-10pa.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

The value of Roots vacuum pump

When it comes to the changing market economy, under the promotion of the general environment, the development needs of all aspects have undergone substantial changes. More and more enterprises pay attention to and develop their own products. From the perspective of product development to product application, they want to open up a new road. Taking roots vacuum pump as a typical example, the products are made into series, fine and environmental protection conceptual products, which not only accelerates its development, but also promotes the application of market economy. 

The roots vacuum pump has been developing rapidly with the common advantages. With the advanced technology as the center, the company has increased the deployment of the enterprise's strategy. In addition to enhancing the strength of the product itself, the accuracy of the products has also been increased in the consumption link, and each machined part is used as an important consumption mode, and the quality of the processing parts is improved. The way to invest in the market, provide users with reliable and stable products, and increase the development process of enterprises.

In order to increase the market share of Roots vacuum pump, all enterprises want to make their products into influential products. In the vacuum field, through the central strength of technology, while speeding up the development, corresponding to different needs, do a good job in the development of special performance of products, increase the deployment of market research, and promote the favorable development of products from the overall environment.


CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

single acting reciprocating vacuum pump principle

Vacuum pump is a kind of widely used vacuum equipment, which can be divided into reciprocating, reverse type and so on. This paper focuses on the principle of reciprocating vacuum pump. 

The working principle diagram of single acting reciprocating vacuum pump: its working process is: when the piston moves to the right, the space volume on the left side of the piston in the cylinder increases, and the gas pressure drops. When the pressure drops to a little less than the pressure in the suction inlet pipe, the gas from the suction inlet opens the inlet valve and enters the cylinder. With the piston moving to the right, the gas continues to enter the cylinder until the piston moves to the end of the right, which is the suction process. In the suction process, because the gas pressure outside the exhaust valve is greater than the pressure in the cylinder, the exhaust valve can not be opened. When the piston begins to move to the left, the intake valve is closed by the hair in the cylinder, so that the gas can not flow back to the suction line. When the piston moves to a certain position, the gas in the cylinder is compressed to a pressure slightly higher than the outlet pressure, the exhaust valve is pushed open, and the gas in the cylinder is discharged until the piston moves to the end of the left side, which is the exhaust process. In this way, the reciprocating motion of the piston can form a vacuum at the suction pipe.

Reciprocating vacuum pump also has a single-stage and multi-stage difference. The vacuum degree of single-stage double acting high-speed vacuum pump can reach 10-20 mmHg (certain pressure). The multi-stage vacuum pump can reach higher vacuum degree.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Selection skills of high temperature oil pump

 Selection skills of high temperature oil pump 

As a kind of high quality hot oil circulating pump and heat carrier pump, high temperature oil pump is an ideal matching pump in heat exchange equipment, which can transport high temperature liquid without solid particles.

The high temperature oil pump adopts self heat dissipation structure and changes the traditional water cooling structure, which makes the pump structure more reasonable, efficient and energy-saving, optimizes the product performance and greatly improves the reliability of use.

The selection of high temperature oil pump can be considered from five aspects: pipeline layout, operation and operation conditions, liquid property, liquid delivery capacity and unit head.

Vacuum Pump Of Freeze Drying Technology

Oil-Free Vacuum Pump Purchase

Common Solenoid Valve On Vacuum Unit

High temperature hot oil pump

The high temperature heat pump adopts self heat dissipation structure, which changes the traditional water cooling structure. It has the advantages of simple structure, small volume, low operating cost, good performance and reliable operation. It is the second generation product developed on the basis of digesting and absorbing foreign oil pumps. The basic structure is single-stage single suction cantilever foot support structure. The inlet of the pump is axial suction and the outlet is vertical upward, It is installed on the base together with the motor. 

The support of high temperature hot oil pump adopts the structure of double end ball bearing support. The front end is lubricated by lubricating oil, and the back end is lubricated by grease. There is a guide pipe in the middle to observe the sealing condition and recover the heat transfer oil at any time.

High temperature hot oil pump is composed of pump body, pump cover, internal and external rotors, pump shaft, shaft end combined seal and other parts. The main drive is composed of a set of meshing rotors. The shaft end seal adopts high temperature reflux combined seal, and adopts water tank cooling mode to control the temperature of shaft seal. High temperature gear pump is a positive displacement pump, which transfers melt by changing working volume caused by meshing of driving and driven gears. The working volume is composed of pump body, gear slot and bearing with side plate function. Pump and motor use three claw elastic coupling to form oil pump unit.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Principle of pumping liquid with water ring pump

When pumping liquid, the process of suction is the same as that of gas. On the left side of the sickle shaped space of the pump (the side of the pressure outlet), the speed of the liquid is increased due to the decrease of the water cross section. 

According to Bernoulli's equation, when the speed increases, the pressure will decrease. When the liquid continues to flow forward and flows to the pressure outlet, the pressure will increase suddenly. As a result, the liquid passing through the pressure outlet will be obstructed and the speed will be slowed down. The sudden increase of pressure and deceleration will bring huge hydraulic loss, so the efficiency of water ring pump in pumping liquid is very low (compared with that of pumping gas) The efficiency is not more than 15 ~ 20%, because of the huge hydraulic loss and the "water conveyor effect" (when the liquid flows to the pressure outlet area, the liquid flows from the place with large radius to the place with small radius, and the liquid transfers its own energy to the impeller, just like the water conveyor), in fact, the head is much smaller. The head of water ring pump is smaller than that of centrifugal pump of the same size.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Lubrication and maintenance of vacuum pump

The vacuum pump in use will produce more or less friction, we need to constantly lubricate it to keep it in good working condition, and after use, we need to maintain it for a longer time. 

Under normal working conditions, the waste grease and its dirt in the bearing and accessory space should be removed and new grease should be added after the rotating speed is 20000 h or the longest 3 years. The additional grease should account for 50% of the bearing free space and 65% of the bearing cover space. If the working conditions are very bad, the grease change cycle should be shortened accordingly.

1. If hard water is used as working fluid, it can only be used after softening treatment, or the pump can be cleaned with solution within a certain period (in order to avoid abrasion of impeller, pump body or impeller jamming, dust particles entering pump cavity along with gas and working fluid shall be washed through the flushing port at the bottom of pump cover; if hard water is used as working fluid, hard water shall be softened or periodic solvent shall be used to flush vacuum pump ）。

2. The temperature of the bearing in normal operation of the motor is 15 ℃ - 20 ℃ higher than the surrounding temperature, and the maximum temperature is not allowed to exceed 55 ℃ - 60 ℃.

3. Always pay attention to check the running state of the vacuum pump and observe whether the rotation of the shaft and bearing is stable. In case of instability or jamming, the relevant parts shall be replaced and repaired immediately.

4. In case of leakage of the mechanical seal used, check whether the dynamic and static rings of the mechanical seal have been damaged, or the seal ring is aging. In case of the above situation, new parts need to be replaced.


Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Application principle of vacuum pump

Reciprocating vacuum pump is the application of piston back and forth activities, will transfer energy to the liquid. In order to complete the mission of liquid delivery. The flow rate of reciprocating pump is only related to the displacement of piston and the condition of pipeline, but the lift of reciprocating pump is only related to the condition of pipeline.

The reciprocating pumps used in practical production are different in construction due to the difference of liquid properties or application targets. When used to transport flammable and explosive liquids, the reciprocating pump driven by steam is often used to ensure safety and reliability.

In order not to damage the piston, a barrier pump should be used when the putrefaction liquid or suspension is carried. That is, an elastic film is used to separate the piston and the body of the food to return to the spring. This elastic film is made of rubbers or special metals with good abrasion resistance and corrosion resistance. All parts on the right side of the barrier are made of or lined with anti-corrosion materials; on the left side of the barrier are filled with water or oil. When the piston moves back and forth, it forces the gap to bend to both sides, resulting in the corrosive liquid or suspension being sucked and pressed out in turn on the right side of the barrier. It does not interfere with the piston. This kind of pump requires huge skill. It is easy to be damaged and difficult to maintain.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Selection basis of vacuum pump

The two rotors of vacuum pump are operated synchronously by a pair of high precision gears. The driving shaft is connected with the motor through the coupling. There are mainly two types of transmission structure: one is that the motor and gear are placed on the same side of the rotor. Driven rotor is directly driven by the motor end gear, so that the torsional deformation of the active rotor shaft is small, the gap between the two rotors will not be changed due to the large torsional deformation of the active shaft, so that the gap between the rotors is even in the operation process. When using a pump can not meet the requirements of pumping and vacuum, several pumps need to be combined to complement each other to meet the process requirements.

Some vacuum pumps can't work under atmospheric pressure, so they need pre vacuum; some vacuum pumps need pre pump because the outlet pressure is lower than atmospheric pressure, so they need to be combined. The combined vacuum pump, we call it vacuum pump unit, it can make the vacuum system get better vacuum degree and exhaust volume. We should choose the combined vacuum pump correctly, because different vacuum pumps have different requirements for the extracted gas. For example, in general, roots vane unit is not suitable for systems with more condensable gas. When you choose oil seal pump, you should first understand whether your vacuum system has requirements for oil pollution. If the equipment is strictly oil-free, all kinds of oil pumps should be selected, such as: water ring pump, low temperature pump, etc. If the requirements are not strict, oil pump can be selected, and some anti oil pollution measures, such as adding cold well, oil trap, baffle, etc., can also meet the requirements of clean vacuum.

Understand the composition of the extracted gas. The gas contains no condensable steam, whether there is particle dust, whether there is corrosiveness, etc. When selecting a vacuum pump, it is necessary to know the gas composition and select the corresponding pump for the extracted gas. If the gas contains steam, particles and corrosive gas, auxiliary equipment, such as condenser, dust remover, etc., shall be installed on the air inlet pipeline of the pump. When choosing the oil seal vacuum pump, we should consider how the oil vapor (oil fume) discharged from the vacuum pump affects the environment. If the environment is not allowed to be polluted, the oil-free vacuum pump should be selected or the oil vapor should be discharged to the outdoor. Whether the vibration produced during the operation of vacuum pump affects the process and environment. If the process is not allowed, the pump without vibration shall be selected or anti vibration measures shall be taken.

2BEC Liquid Ring Vacuum Pump

South Africa Vacuum Pump Supplier

Dry Screw Vacuum Pump Application Industry

Understand the operation of water ring vacuum pump

Understand the operation of water ring vacuum pump

When using the water ring vacuum pump, we need to pay attention to water as a very common working fluid or coolant, which plays an indispensable role in the normal operation of the water ring vacuum pump and the water ring vacuum degree. Pump can also be recycled, but only need to pay attention to some details to avoid unnecessary trouble.

Here, we will especially understand the problem of using the working fluid of water ring vacuum pump: when the working fluid is recovered, it can be kept free of impurities. If it is to be recycled, it needs to be used together with water tank and cooling device. The recommended operating water temperature is 15-25 ° C. high water temperature will affect the performance of the pump equipment, such as vacuum degree and pumping capacity.

2BV water ring vacuum pump generally needs to increase equipment cooling, more importantly, on-site process and temperature regulation. In fact, most industries reuse circulating water. If water can be used, it is waste, but circulation pipeline must be installed. Generally, the working fluid of water ring vacuum pump shall be industrial soft water.

The water ring vacuum pump has certain requirements for water temperature and water quality when it works, mainly to avoid the corrosion of internal impeller and other components, and whether the vacuum generated is pure. Generally, for the purpose of recycling water, it can save resources, try to use industrial soft water, so as to avoid damage to equipment, better achieve the purpose of multiple water use, achieve the purpose of environmental protection, and save resources.

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Maintenance technology of vacuum pump

Maintenance technology of vacuum pump

In view of the working conditions of dust and acid gas when the vacuum pump works, and the vacuum pump works continuously for a long time, the technical personnel of the vacuum pump factory put forward several suggestions on the maintenance process of the vacuum pump:

1. A metal filter screen is arranged at the air inlet of the vacuum pump;

2. For the maintenance of the vacuum pump, take two weeks as a cycle to clean the sediment in the oil tank, forcibly replace the vacuum pump oil, clean the metal filter screen, check and replace the damaged valve plate and spring.

3. In the selection of vacuum pump oil, mineral oil with low saturation pressure and kinematic viscosity of 100mm2 / s should be selected, which has the characteristics of low price (for titanium smelting, it is not economical to select synthetic vacuum pump oil);

4. During the cooling period of ingot or idle time of production, the production team is required to open the gas ballast valve, pump the gas for about 1H, and discharge the water in the pump oil out of the pump as much as possible; by frequently changing the pump oil, keep the pump cavity clean, ensure the reasonable viscosity of the pump oil, maintain its sealing performance, and reduce the scratch of hard particles on the pump cavity;

5. By removing the water in the oil, reducing the formation of hydrochloric acid, and delaying the corrosion of hydrochloric acid to the components in the pump cavity.

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Precautions to prevent damage to the vacuum pump

Precautions to prevent damage to the vacuum pump

In the case of a small gap, when the temperature rises, the vacuum pump cover will expand, but the pump casing will prevent the cover from expanding. Because of this, a lot of stress is generated in the pump casing, and it even bursts.

In order to prevent the vacuum pump from being damaged due to temperature stress, the following points should be noted:

(1) Insulate the housing of the vacuum pump well;

(2) Heat the vacuum pump slowly and evenly before starting:

(3) Avoid cooling the fog parts containing high temperature parts;

(4) All fittings on the pump casing should be carefully checked based on temperature stress;

(5) The alignment of the shaft and bearing should be checked in a cold state, in a warm-up period, and in a hot state to prevent the shaft from deforming at any temperature.

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Exhaust principle of water ring vacuum pump

Water ring vacuum pump is a kind of crude vacuum pump. The limit vacuum it can obtain is 2000 ~ 4000Pa, and the series atmospheric ejector can reach 270 ~ 670pa. Water ring pump can also be used as compressor, which is called water ring compressor. It belongs to low-pressure compressor, and its pressure range is 1 ~ 2 × 105Pa gauge pressure.

Water ring pump was first used as self absorption pump, and then gradually used in many industrial sectors such as petroleum, chemical industry, machinery, mining, light industry, medicine and food. In many industrial processes, such as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum moisture return and vacuum degassing, water ring pump is widely used. Due to the rapid development of vacuum application technology, water ring pump has been paid more and more attention in the aspect of obtaining crude vacuum. Because the gas compression in the water ring pump is isothermal, it can pump out flammable and explosive gas, in addition, it can also pump out the gas containing dust and water. Therefore, the application of water ring pump is increasing day by day.

The pump body is filled with appropriate amount of water as working fluid. When the impeller rotates clockwise according to the direction indicated in the figure, the water is thrown around by the impeller. Due to the centrifugal force, the water forms a closed ring of approximately equal thickness, which is determined by the shape of the pump cavity. The inner surface of the upper part of the water ring is just tangent to the impeller hub, and the inner surface of the lower part of the water ring is just in contact with the top of the blade (in fact, the blade has a certain insertion depth in the water ring). At this time, a crescent space is formed between the impeller hub and the water ring, and this space is divided into several small cavities with equal number of blades by the impeller. If the upper 0 ° of the impeller is taken as the starting point, the volume of the small cavity will increase from small to large when the impeller is 180 ° before rotation, and it is connected with the suction port on the end face. At this time, the gas will be inhaled, and when the suction is finished, the small cavity will be isolated from the suction port; when the impeller continues to rotate, the small cavity will change from large to small, so that the gas will be compressed; when the small cavity is connected with the exhaust port, the gas will be discharged out of the pump.

How To Vacuum Pump Maintance

Water Ring Vacuum Pump manufacturers

Best Water Ring Vacuum Pump

vacuum pump in alumina plant Selection

vacuum pump in alumina plant Selection

When choosing vacuum pump, alumina plant should pay attention to the following points when considering suction pressure:

① When the carbonation decomposition rate of the filter is too high (commonly known as "over head"), the slurry is suspended, which pastes the filter cloth like jelly, so it is difficult to filter, and the vacuum degree increases rapidly.

② The particle size of aluminum hydrogen in the slurry from the carbon separation tank of alumina production system by sintering process is uneven, especially containing some ultra-fine aluminum hydrogen particles, which is easy to block the filter cloth, and the aluminum hydrogen slurry by sintering process is easy to harden the filter cloth, which will rapidly improve the vacuum degree.

③ Due to the loss along the way and other reasons, the suction pressure at the filter is always lower than the suction pressure at the inlet of the vacuum pump. According to the experience data of each workshop of our company, the loss is about 0.005MPa.

In addition, other accidents may occur. The flat plate filter has experienced a rapid increase in vacuum when washing the filter cloth. Therefore, the suction pressure of the pump should be more margin than normal.

VACUUM FURNACE

industrial vacuum pumps,vacuum furnaces

Heat treatment equipment

vacuum pump in vacuum grouting technology

vacuum pump in vacuum grouting technology

Vacuum grouting is a commonly used technology in bridge concrete structure, and grouting is a key link. The traditional grouting technology will cause corrosion and component expansion crack after long-term use, which has a great potential safety hazard.

Vacuum grouting is a new technology in the construction of post tensioned prestressed concrete structure, which solves the problems left by the traditional grouting technology to a large extent. The adoption of vacuum grouting technology is an effective measure to improve the safety and durability of post tensioned prestressed concrete structure.

The main application of vacuum pump in vacuum grouting is that one end of the duct is vacuumized by vacuum pump to produce a vacuum of about - 0.1pA, and then the optimized special cement slurry is poured from the other end of the duct to fill the whole duct with a positive pressure of ≤ 0.7MPa to improve the fullness and compactness of the prestressed duct grouting.

Water Ring Vacuum Pump Installation Instructions

Dry Scroll Vacuum Pump

Dry Screw Vacuum Pump