Roots air jet water ring vacuum unit

Jzj (P) roots air jet water ring vacuum unit is composed of Roots vacuum pump, air jet pump and water ring vacuum pump in series. The unit has high vacuum degree, high pumping efficiency, low noise, stable operation, compact structure, small floor area, simple operation and convenient maintenance. 

Jzj (P) roots air jet water ring vacuum unit can be widely used in vacuum distillation, material dehydration in pharmaceutical and chemical industries, vacuum impregnation in electrical industry, kerosene vapor phase drying, powder metallurgy sintering, freeze drying in food industry, etc. It is also suitable for the workplace with large amount of steam and fine dust.

Vacuum Pumps For Wear-Resistant Coating

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Reciprocating vacuum pump

The working principle of reciprocating vacuum pump is similar to that of reciprocating pump. During operation, through the action of crankshaft and connecting rod, the piston in the cylinder moves back and forth to achieve the purpose of suction and exhaust. Domestic reciprocating vacuum pump has V-type series. It is composed of body, cylinder, piston, crosshead, crankshaft, connecting rod and valve. When the piston moves back and forth, one end of the piston sucks gas from the vacuum system, while the other end exhausts the gas that has been sucked into the cylinder. 

Reciprocating vacuum pump can be directly used to obtain rough vacuum, and its limit pressure is generally about 10 mmHg (1333 PA). The advantage of using this kind of pump is that it has a larger pumping speed under the condition that the vacuum degree is not high in general food vacuum concentration and vacuum drying.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Solution to overload of anticorrosive vacuum pump

As for the anti-corrosion vacuum pump, how much do you know about it, and what measures should be taken for overload when using it? We should have a simple understanding. The following will introduce what measures should be taken for overload of anti-corrosion vacuum pump: 

1. Hydraulic coupling: the use of hydraulic coupling can also prevent the overload of anti-corrosion vacuum pump, so that the pump can work under high pressure difference;

2. Vacuum electrical components are used to control the inlet pressure of anti-corrosion vacuum pump: pressure sensitive elements such as vacuum diaphragm relay or electric contact vacuum pressure gauge are installed at the inlet pipeline of anti-corrosion vacuum pump. After the vacuum system is started, when the pressure at the inlet is lower than the given value, the pressure sensing element will send out a signal to start the anti-corrosion vacuum pump through the electrical control system. If the inlet pressure of the pump is higher than the specified value, the vacuum pump will be shut down automatically to ensure its reliable operation;

3. Mechanical automatic pressure regulating bypass valve: the bypass valve is installed on the bypass pipe between the outlet and inlet of the anti-corrosion vacuum pump. This valve controls the pressure difference between the pump inlet and outlet not to exceed the rated value. When the pressure difference reaches the rated value, the valve will open automatically by the differential pressure, so that the outlet and the inlet are connected, so that the pressure difference between the inlet and outlet is reduced rapidly. At this time, the anti-corrosion vacuum pump works under almost no pressure difference load. When the vacuum pump passes through the rated value, the pump will close automatically when the differential pressure is lower than the rated value. The anti-corrosion vacuum pump with bypass relief valve can be started at the same time with the previous pump, which makes the unit operation simple and convenient.


Three-Lobes Roots Blower For Cement Plant

Rotary Vane Vacuum Pump Sealed Container

Dry Scroll Vacuum Pump

Detailed analysis of eruption pump

The ejecting pump uses the principle of converting static pressure energy and kinetic energy into each other when the fluid is moving. It can be used not only for gas but also for liquid. In chemical production, eruption pump is often used for vacuum pumping, so it is also known as eruption vacuum pump. 

The working fluid of eruption pump can be steam or liquid. It is a steam eruption pump. The working steam is ejected from the nozzle at a high speed under high pressure. In the process of eruption, the static pressure energy of the steam is changed into kinetic energy, and the gas is sucked in under low pressure. After mixing with the steam, the aspirated gas enters into huansanfang, the velocity decreases gradually, and the pressure tension increases, and it is discharged from the pressure outlet after one fan.

The structure of the eruption pump is simple and tight, and there is no active part. However, the power is very low, and the steam consumption is large, so it is generally used as a vacuum pump, not as a pleasure delivery device. Because the transported fluid is mixed with the working fluid, its application scale is restricted.

If several jet pumps are used together, a higher vacuum can be obtained. It is a three-stage steam eruption pump. The working steam and mountain gas are absorbed into the inlet of the first stage eruption pump. The steam is condensed by the condenser, and the gas enters the second stage of the eruption pump. Then, it passes through the condenser, the third stage eruption pump and the condenser, and is finally discharged by the eruption pump. The auxiliary eruption pump is connected with the primary eruption pump in parallel to increase the starting speed. When the system reaches the specified vacuum degree, the auxiliary eruption pump can be blocked from the line. The condensate and cooling water in each condenser flow into the tank.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

How to choose vacuum pump in vacuum system

In the planning and accounting of the vacuum system, people call the vacuum pump which directly extracts the vacuum container as the main pump, and the vacuum pump which insists on the pressure of the other pump below the critical pre stage pressure is called the front stage pump. In order to make the vacuum pump in the container to be pumped quickly from atmospheric pressure to the working pressure of the main pump, it is called pre pumping vacuum pump. For a vacuum system, the former stage pump of the system is often used as the pre pumping vacuum pump. The selection of pumps here refers to the selection of main pumps. In a narrow sense, it refers to the proper matching of the main pump with a reasonable front stage pump. In a broad sense, it includes the selection of the front stage pump and the pre pumping pump. The central equipment of vacuum system is vacuum pump, and the key process of vacuum system planning is pump selection and pump distribution. 

The main pump type, the first thing to consider is the feasibility and reliability of the problem, should be based on the vacuum pump to reach the limit of vacuum degree and operating vacuum (select the limit vacuum of the main pump is slightly higher than the limit vacuum of the vacuum chamber), according to the type of gas to be pumped, the proportion of each gas, and the gas mixed with dust and other conditions, select the true pump air that meets the process requirements. When two or more different types of pumps are suitable for the above conditions, we should select the economically reasonable vacuum pump according to the economic objectives such as initial investment and daily protection cost. Then, further comparison of environmental conditions and other conditions, selected. Therefore, it is necessary to start from the whole set of vacuum system and consider it comprehensively. It is necessary to recognize it only by comparing vacuum pumps.

API 681 Liquid Ring Compressor

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump 

Dust removal and filtration method of oil seal vacuum pump

Some vacuum processes will produce a lot of dust. If the dust enters the oil seal vacuum pump with the extracted gas, it will accelerate the wear of the parts in the pump cavity like abrasive, cause wear and damage to the pump rotor and pump cavity, block the oil circuit or make the pump unable to run. If the dust enters the vacuum valve, it will make the seal invalid and leak, so the dust prevention and filtering has been completed The use of dust filters in vacuum systems must be critical for increasing the lifetime of the dust system. 

When the amount of dust is small, it can be filtered by the pump oil filtering system, but when the dust amount is large, the dust collector must be used to prevent the damage of the vacuum pump and ensure the normal operation of the vacuum pump.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Front stage vacuum pump in vacuum application

The pump which can provide the necessary pre stage pressure for other pumps which can not directly exhaust to the atmosphere is called the front stage pump. Among them, some pumps can work in two ways, sometimes discharged into the atmosphere, and sometimes discharged into the pre pressure of decompression. 

All types of pumps can exhaust air to the atmosphere, but their effective working area depends on their working principle. If the sealing fluid is not used, the high compression ratio cannot be maintained, and the mechanical clearance cannot be made small enough to effectively prevent the secondary expansion or backflow. Pumps without sealing fluid are suitable for working near atmospheric pressure. Because it is difficult to dissipate the heat of compression, some dry mechanical pumps, especially roots pump and thousand screw compressor, are limited in their low pressure and strong operation. These pumps should work above 30otorr. If materials such as carbon, graphitized cast iron and high temperature synthetic materials are used, the working area of dry vane pump can be extended to 150 Torr due to the self-lubricating property of these materials. In the same pressure area, liquid ring pump, reciprocating piston pump and lower efficiency jet pump can be effectively used. If double-stage liquid ring pump, valveless multi-slice pump, double-stage reciprocating piston pump, liquid jet pump and double-stage steam jet pump are used, the pressure area can even be extended to about 30 Torr. When the working pressure is further reduced, the relatively simple pump may no longer be applicable, and the multi-stage rotary oil seal pump must be used, and the sealing fluid with low steam pressure must be selected. 

The effective working pressure of single-stage pump is mainly due to the influence of oil pollution, so it is limited to 0.l Torr. Due to the same influence, the low pressure working limit of the two-stage oil seal pump is slightly lower than 10mtorr. The oil vapor pressure arc of about 1mtorr makes roots pump with two-stage oil seal pump (at effective pumping speed) unable to work in 10-6 Torr area. It is more effective to use other pumping equipment, such as diffusion pump, ion pump, etc., for pumping air below 1mtorr. As far as mechanical pumping is concerned, turbomolecular pumps are best used in this area.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Heater and heating power of oil diffusion pump

Compared with the diffusion radiation pump, the pumping capacity and maximum outlet pressure of the oil diffusion pump are much lower, so the heating power of the pump is also lower. The boiler diameter of oil diffusion pump is usually equal to (less than) the diameter of pump port. The heat load of oil diffusion pump boiler with pumping speed greater than 500L / s shall not exceed 2-2.5w/cm2 

In the oil diffusion pump, the power consumed by oil evaporation is usually 60% - 70% of the total power, and other parts are used to compensate for various heat losses. In the diffusion pump, the heat loss mainly includes the following aspects: the heat conduction from the heater surface through the boiler wall to the outside (20% - 25%); the heat transfer from the hot boiler to the cold pump body along the pump wall (10% - 15%); the radiation from the guide pipe surface to the pump wall and the heat transfer from the gas and steam mixture from the guide pipe to the pump wall (5% - 10%). If the pump results are good, the heat loss can be reduced to 10% - 15% of the total power.

For example, the heat loss can be obviously reduced if the heat insulation of pump heater and boiler is stopped. Assuming that there is no air layer between the bottom of the boiler and the heater, the heating power can be well applied.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Reciprocating pump in chemical plant

Vacuum pump is used to pump air from the equipment or production system to make the equipment or production system work under vacuum. The main function parameters of vacuum pump are: pumping rate, limit vacuum degree, shaft power and speed, etc. The pumping rate of vacuum pump refers to the volume of gas that can be pumped out in unit time (m3 / h). The limit vacuum degree refers to the vacuum degree that the pump can reach. 

The vacuum pumps commonly used in chemical production are: reciprocating vacuum pump, water ring vacuum pump and eruption pump.

Vacuum pump is characterized by a large pressure ratio. For example, in order to reach 95% vacuum, the nominal pressure of suction is 0.005MPa, while the exhaust pressure is 0.1MPa, and the pressure ratio is 20. Because of the large pressure ratio, the gas in the residual clearance volume will occupy a large volume after expansion, which greatly reduces the suction volume and the useful utilization rate of the cylinder is very low.

In order to deal with the above problems, several grooves are generally opened on the cylinder wall at both ends of the cylinder, which are longer than the thickness of the piston. When the piston works to the dead center position, it is used to balance the pressure of the cylinders on both sides of the piston. For example, when the piston works to the left dead center, the exhaust of the left cylinder is finished, and the residual gas with high pressure in the clearance volume is left, and the suction in the right cylinder is finished, and the pressure is low. Because of the connection effect of the groove, the gas pressure in the clearance volume of the left cylinder decreases. In this way, when the piston returns to work, the volume occupied by the expansion of residual gas is greatly reduced, and the suction volume is increased. The same is true of the piston working to the right dead center.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Requirements of vacuum pump for lubricating oil

In fact, the factors that affect the vacuum degree of vacuum pump are various, including sealing mode, clearance of accessories, material quality and so on. This paper mainly explains the requirements of vacuum pump for lubricating oil. 

(1) With appropriate viscosity: the viscosity of oil is too small, the lubricity can not meet the requirements, the sealing is not good, the viscosity is too high, the internal friction is large, the rotor rotation is difficult, the kinetic energy consumption is increased, and the oil temperature is also increased. The increase of oil temperature will accelerate the oxidation deterioration of oil, especially for rotary vane vacuum pump.

(2) Low saturated vapor pressure: the "vapor pressure" index of oil is low, so it is not easy to evaporate under the working conditions of low pressure and high temperature in the vacuum pump, so as to ensure the required vacuum degree.

(3) The oxidation stability is good, and the oil in use is not easy to oxidize and deteriorate.

Generally, vacuum pump oil is selected for vacuum pump. At present, there is only No. 1 vacuum pump oil made in China. It is made of natural crude oil and refined deeply. It plays the role of lubrication and sealing in vacuum pump.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Judgment method of screw vacuum pump

Dry screw vacuum pump is a new type of vacuum pump, which is developed to replace the traditional water ring vacuum pump, oil ring vacuum pump and other pump types. Because of its unique design principle, it can be oil-free and water-free, and can be used as corrosion-resistant coating. The excellent sealing design will far exceed the performance of traditional vacuum pump in any aspect. 

How to judge whether the dry screw vacuum pump is qualified can be judged from the following aspects:

1. Limit vacuum degree: of course, the lower the limit vacuum, the better. At present, the domestic one is about 5pa, while the imported one is about 1pA.

2. Vibration and noise: vibration must be small, noise must be less than 80 dB. 

3. If it is used in a corrosive environment, it is better to ask the manufacturer for a sample of the same coating, and put it in the factory for a test. If the coating or coating ratio used by each manufacturer is different, its performance will be greatly different.

4. Sealing: This is also very important, but we can only learn from the manufacturer's instructions. The most direct way is to determine whether there is leakage through the medium after connecting to the system.

Vacuum Unit Extraction Process

Vacuum System In Thermal Drainage Of Geothermal Power Plant

Vacuum Pump Parts Repair Knowledge 

Oil diffusion pump vacuum system pollution and Prevention

The vacuum system of oil diffusion pump is the most commonly used vacuum system, and the vacuum degree range is 1.3 × 10-3 ~ 1.3 × 10-5 PA. All kinds of vacuum formed by vacuum system of oil diffusion pump

After long-term operation, the common defect of the device is that the vacuum degree cannot be pumped up or the vacuum degree cannot reach the original limit vacuum level. Oil vapor pollution and vacuum technology 

The pollution of various pollutants in the process is related to

(1) Clean the vacuum chamber regularly;

(2) Stop cleaning oil seal mechanical vacuum pump and oil metal diffusion pump regularly

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Regeneration of cryogenic vacuum pump

Unlike other gas transfer pumps, cryogenic pumps will be saturated in the process of gas capture, so it is necessary to release the adsorbed trapped gas to recover the trapping capacity, which is called regeneration process. 

The regeneration of cryogenic vacuum pump includes partial regeneration (only releasing the gas adsorbed by the secondary cold plate) and total regeneration (releasing all the gas adsorbed by the cold plate). This paper is to understand the low temperature pump regeneration of several ways.

In the regeneration process of cryogenic vacuum pump, the released gas needs to be removed in time to prevent possible damage to the pump body or the glass tube shell of vacuum gauge, or even explosion. Because when the temperature rises to a certain temperature, the desorption speed of the permanent gas is very fast, and the pressure in the pump body can be increased to more than one atmospheric pressure in a few minutes.

Roots Vacuum Pump In Vacuum Metallurgy Industry

Vacuum Pump Heat Dissipation And Cooling Techniques

Water Ring Vacuum Pump In Gas Drainage Pumping Station 

Development and classification of imported vacuum pump oil

After many years of polishing, China's vacuum technology has made rapid development. At present, it has become an independent basic science with the continuous development of many industrial companies, such as aerospace science, vacuum coating, vacuum smelting, high energy physics, controlled thermonuclear reaction, surface research, etc. The progress of science and vacuum technology is interdependent. As a special lubricating oil for various mechanical vacuum pumps, the imported vacuum pump oil plays the functions of lubrication, sealing and cooling in the vacuum pump. 

Because the mechanical vacuum pump has different models, so the vacuum pump oil must also have suitable viscosity, excellent oil-water separation, good thermal stability and oxidation stability, as low as possible saturated vapor pressure, because the quality of vacuum pump oil indirectly affects the limit pressure, pumping rate, back pressure and oil return rate of vacuum pump equipment. In recent years, with the continuous development of vacuum technology, mechanical vacuum pump develops to high speed, low noise and miniaturization. The linear velocity of the friction pair surface in the pump cavity increases, and the oil temperature rises. Because the mechanical vacuum pump oil tends to be low viscosity, it is required to maintain a low vapor pressure under the working temperature of the pump.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Working principle of centrifugal pump

The working principle of centrifugal pump is: relying on the high-speed rotating impeller, the liquid obtains energy under the action of inertial centrifugal force to improve the pressure. Before the pump works, the pump body and water inlet pipe must be full of water to prevent cavitation. When the impeller rotates rapidly, the blade impels the water to rotate quickly. The rotating water flies away from the impeller under the action of centrifugal force. After the water in the pump is thrown out, the central part of the impeller forms a vacuum area. Under the action of atmospheric pressure (or water pressure), the water from the water source is pressed into the water inlet pipe through the pipe network. In this way, continuous pumping can be realized. 

It is worth mentioning here: before starting the centrifugal pump, the pump shell must be filled with water before starting, otherwise the pump body will be heated, vibrated, the water output will be reduced, and the pump will be damaged (referred to as "cavitation") and cause equipment accident! The so-called cavitation refers to: when the centrifugal pump starts, if there is air in the pump, because the density of the air is very low, the centrifugal force generated after rotation is very small, so the low pressure formed in the center of the impeller is not enough to suck the liquid level lower than the inlet of the pump into the pump and can not transport the fluid。

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Vacuum technology of imported vacuum pump in sand blasting machine

The principle of sand collection, lifting and transportation in sand blasting room is the vacuum technology of imported vacuum pump. The application of imported vacuum pump in sandblasting machine industry is essential. Sandblasting machine is the category of air conveying machinery. In the pipeline, compressed air is used to transport powdery particles (1 ~ 4mm in diameter) from one place to another. In the process of converting kinetic energy into potential energy, the high-speed moving sand particles scour the surface of the object, so as to improve the surface quality of the object. 

In vacuum sand lifting, the sand is lifted into the sandblasting machine tank by the suction force of the imported vacuum pump, so as to replace the manual sand loading and sand transportation, reduce the opportunity of operators to contact silica dust, reduce the labor intensity and improve the productivity.

Firstly, start the imported vacuum pump to cause the vacuum in the buffer tank, so as to lift the sand to a certain height in the buffer tank, and then flow into the rotary screen from the buffer tank, and the qualified sand will automatically fall into the sand storage tank after screening.

The second step is to connect the vacuum to the sand blasting tank (a sand separation buffer tank is installed in the middle) to cause the vacuum in the sand blasting tank, so that the sand particles are lifted from the sand storage tank to the sand blasting tank to complete the lifting and transportation of sand particles.

This method is simple and easy to operate. In addition to an imported vacuum pump, other equipment can be completely self-made. At present, many enterprises use imported vacuum pump. When the vacuum degree reaches 200 mm Hg, the above-mentioned sand lifting and transportation process can be realized. The disadvantage is that the amount of sand transport is small, and some auxiliary human labor is needed to collect the scattered sand particles, so the process is only suitable It is used in small and medium-sized factories and mines with less sand blasting workload.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Application of vacuum system

Vacuum technology is widely used in various processes, such as vacuum smelting furnace, RH vacuum treatment, vacuum spraying, vacuum distillation, vacuum concentration, vacuum welding, vacuum casting, vacuum coating, vacuum surface treatment, vacuum cathode ray tube, vacuum drying, vacuum sterilization, food packaging, development and utilization of solar energy, particle accelerator, controlled nuclear fusion and aerospace, etc 。 The pumping system used to obtain and measure the vacuum degree with specific requirements is called vacuum system.

There are many kinds of vacuum systems used in different processes, which can be divided into two types. One is the dynamic vacuum system, which relies on the continuous operation of the equipment by vacuum, and continuously exhausts the gas entering the system to obtain a stable vacuum. There is gas flow in the system, and the pressure varies from place to place. The second is static vacuum system. It does not have any connecting point with the outside world. After the vacuum is established, it can be maintained unchanged for a long time without a vacuum pump, and the pressure in the system is equal everywhere.

The vacuum system consists of vacuum equipment body (such as vacuum furnace, vacuum container, etc.), vacuum pump, cold trap, vacuum pipe, valve, vacuum gauge, bellows and filter.

Vacuum system is an important part of direct air cooling system. Its function is to establish and maintain low back pressure of steam turbine and vacuum of condenser. During the start-up of the unit, the accumulated air in some steam and water pipe systems and equipment shall be removed in order to speed up the start-up speed. During normal operation, the steam, drain, air and other non condensable gases leaked into the vacuum system should be removed in time to maintain the vacuum of the air condenser and reduce the corrosion of the equipment. The shaft seal and low-pressure heater in the low-pressure part of the steam turbine also rely on the normal operation of the vacuum extraction system to establish the corresponding vacuum.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Submersible sewage pump

Submersible sewage pump is a kind of pump and motor together, and also enters the work of the pump's liquid products. It has obvious advantages in the following aspects, compared with general horizontal or vertical ratio pumps. Submersible sewage pump sewage pump. 

It is precisely because of these advantages that submersible sewage pumps have received more and more attention from people, and they have been used more and more widely, from simply being used to transport clean water to now being able to transport domestic sewage, industrial wastewater, various construction site drainage, and liquid Feed etc. Municipal engineering, industry, hospitals, construction, hotels, water conservancy construction and other industries play an important role.

However, everything is divided into two. The most critical issue for submersible sewage pumps is reliability, because the use of submersible sewage pumps is submerged; the transmission medium is a liquid mixture containing solid materials, which is close to the pump. And the motor; it is a vertical arrangement, the weight of the rotating parts is in the same direction as the impeller pump bears the water pressure. These problems are in the selection of a sealed submersible sewage pump, electrical load capacity, bearing arrangement and other requirements higher than average.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces 

Advantages of vacuum pump oil in use

The main advantages of vacuum pump oil are small clearance, less leakage, high compression ratio, stable pumping speed in a wide range of crude force and wide working pressure range; as the volume of the compression chamber changes continuously, the driving torque change is small, the power change is small, the vibration noise is low, and the reliability is high. This is not available for other types of dry vacuum pumps. 

The problems of oil leakage, noise, oil return pollution, high energy consumption and vibration of ordinary vane oil pump have adverse effects on users, such as oil vapor pollution in biological products industry and semiconductor industry and oil return valve problem in process system. In the coating process of vacuum coating equipment, if the ordinary oil-free vertical vacuum unit is used as the vacuum pump oil in the front stage when coating under 20 ~ 40Pa vacuum condition, the coating process equipment will be polluted and the film forming quantity will be affected.

There is a gap of 509l between using oil pump and using dry pump in semiconductor chip manufacturing process, and the discharged oil mist vapor also pollutes the environment. In particular, the use of oil pump test instruments will cause adverse effects in the industry. The vortex oil-free vacuum pump used in large synchrotron radiation beam line as the front stage vacuum pump is also quite obvious. In addition, the oil-free vertical vacuum unit eliminates the environmental pollution and trouble caused by the oil leakage of ordinary oil pump.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces 

Relationship between vacuum adsorption and vacuum pump system

In the vacuum generator system, in order to ensure the maximum vacuum degree of the vacuum suction port and maintain a certain vacuum degree in case of power failure, the connecting pipe between the vacuum generator and the vacuum adsorption fixture should be as short as possible, and a one-way valve can be set between the vacuum adsorption fixture and the vacuum generator. 

The maximum vacuum degree of vacuum pump system can reach 101.3kPa, and the suction flow of vacuum can also be large. However, the problems of vacuum pump system are: complex mechanism, large volume, heavy weight, high price, inconvenient installation, maintenance, difficulty in compounding with accessories, pulsating vacuum pressure, slow vacuum generation and release, etc. The maximum vacuum degree of the vacuum sounder system can reach 84 kPa, and the suction flow of vacuum is not large. However, its advantages are simple structure, small volume, light weight, low price, convenient installation, no maintenance, simple compounding with accessories, no pulsation of vacuum pressure, fast generation and release of vacuum, etc. When the maximum vacuum degree of the vacuum suction port is low and the leakage rate of the vacuum adsorption fixture and the workpiece is less, the true value is used

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