How to check the oil seal leakage of vacuum pump

No matter whether the water ring vacuum pump is pumping air or water, there should be no leakage. Check the oil seal carefully before use to see if it leaks. Oil seal is a kind of seal often installed in water ring vacuum pump equipment, which has good sealing effect. How to check whether the vacuum pump oil seal leaks? 

1. The water level indicator in the vacuum system is not broken or leaking.

2. Close the drain valve on the steam side of the condenser to prevent leakage.

3. Check whether the water ring vacuum pump is under negative pressure, whether the water level of the low pressure heater is normal and whether the drain valve is sealed.

4. Check whether the exhaust steam safety valve of low pressure cylinder is in good condition and there is no air intake.

5. Check whether the gravity return water of the speed control feed water pump leads to the condenser. If the return water volume is small and the water seal bag cannot be sealed, the gravity return water from the sealing water of the water supply ring vacuum pump should be poured into the groove.

6. Check the area connecting the vacuum exhaust pipe and the cylinder for air leakage. When the load drops, the air leakage will be reduced, while when the load rises, the vacuum will increase slightly.

7. If the water seal, pipe, flange or weld of vacuum system valve is not firm, especially the pipe and valve port from expansion tank or boiler start-up separator to condenser.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

micro vacuum pump exhaust condition

If the micro pump can not pump water to the equipment effectively, it will need to be used in the process of low water pumping. 

The advantage of the micro vacuum pump in the process of using is that the equipment directly vacuumizes when it does not contact with water. After the vacuum is formed in the equipment, it needs to rely on the air pressure to pump up the water pressure, and then it starts to pump water. In the process of using, it may directly vacuumize because there is no water in the pump. After the vacuum is formed, it depends on the air pressure to pump up the water pressure, and then it is turned on Start pumping.

Micro vacuum pump in the process of pumping resistance, and then according to its judgment conditions to narrow the scope of selection, but in the process of using, we need to consider the problem of the exhaust end of the equipment in time, so as to better select the scope of its choice.

In the actual application process of micro vacuum pump, the exhaust condition faced by the equipment is different. One is that the exhaust is relatively smooth and directly to the atmosphere. The other is that the exhaust resistance is relatively large, such as valves, large damping sensors and other parts on the exhaust pipeline.

In the process of design and manufacture of modern micro vacuum pump, different exhaust conditions need to be treated differently. The exhaust port of the equipment allows a large resistance value. Such a parameter is to calibrate the exhaust capacity of the pump. In this way, strict technical means can be used to determine its type selection.

Welded Bellows Industry Application

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Roots vacuum unit used in vacuum metallurgy industry

Roots vacuum unit is widely used in vacuum degassing, vacuum melting, liquid steel vacuum treatment, space simulation, low-density wind tunnel and other devices to extract corrosive gas in vacuum metallurgy industry. It can also be used in distillation, evaporation, drying and other production processes of chemical industry, food, medicine, motor manufacturing and other industries. 

When working, the pumped gas enters between the rotor and the pump body through the air inlet. At this time, a rotor and the pump body separate the gas from the air inlet, and the separated gas is sent to the exhaust port during the continuous rotation of the rotor. Space is in a closed state, therefore, there is no compression and expansion. But when the peak of the rotor turns to the edge of the exhaust port, because the pressure of the V part is lower than that of the exhaust port, in order to make the pressure in the connected volume uniform, the gas will diffuse from the exhaust port to the V area, and the diffusion direction is opposite to the rotation direction of the rotor. When the rotor rotates again, the gas at V is compressed to the exhaust port to discharge it. At this time, the other side of the rotor is connected with the air inlet to inhale the gas. When the rotor rotates continuously, the above air extraction process is repeated to continuously discharge the gas flowing in. This working process is equivalent to that the rotor space increases from a small value to a large value, and then decreases from a large value to a small value. This is the volume principle of Roots vacuum pump.

Vacuum Pump Is Widely Used In Chemical Industry

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Causes of crankshaft wear of Roots vacuum unit

After using roots vacuum unit for a period of time, the problem of crankshaft wear often occurs. The wear is uneven. The radial wear of main journal and connecting rod journal is mainly elliptical, while the axial wear of crankshaft journal is mainly conical. So, how are these crankshaft wear caused? 

1. Because the oil passage leading to the connecting rod journal is inclined, under the action of centrifugal force, 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 Journal on this side and makes the wear of the connecting rod journal cone-shaped.

2. Because of the bending of connecting rod, the center line of cylinder is not perpendicular to the center line of crankshaft, the axial force on the journal is uneven and the wear deflection is caused.

3. The elliptical wear of the journal is caused by the uneven distribution of the force acting on the journal along the circumference. When roots vacuum unit is working, the combined force 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 wear on the inner side of the connecting rod journal.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Technical transformation of vacuum device of water ring vacuum pump

Water ring vacuum pump is widely used in condenser vacuum system of power plant because of its simple system, high operation efficiency and strong pumping capacity. This paper describes the technical transformation of water ring vacuum pump for water type vacuum pumping device. The transformation results show that after the generator unit is connected to the grid, the monthly accumulated auxiliary power consumption has decreased significantly, and the on grid power has increased significantly. The transformation has achieved the expected effect. 

Due to the problems of low efficiency, large water consumption, poor hot standby effect, low steam extraction efficiency under high vacuum, large space occupied and unsightly in actual operation of water jet ejector device, domestic large and medium-sized units all use water ring vacuum pump as condenser vacuum equipment, and this is also the technical transformation of water ring vacuum pump, in order to improve the circulation of our plant thermal efficiency

It shall be equipped with complete instrument measurement and control device, and the instrument interface shall ensure the accuracy of measured value and reading of medium. The pressure and differential pressure contact signals used for pump interlock and protection are sent out by absolute pressure transmitter to ensure the reliability of their action. The measuring range unit of the instrument shall be the national legal measurement unit. PT100 is used for thermal resistance, 4-20madc is required for analog signal, and passive dry contact is required for switching signal. Contact type is DPDT, and contact capacity is 220vac5a and 220vdc3a (none). The junction box is equipped with cabinet door and door lock. The sampling pipe and sampling valve of thermal control measuring point, including the secondary valve, are welded to avoid the impact of vacuum leakage on the vacuum of the unit.

Vacuum Pump In Vacuum Humidification

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump 

How to maintain the return oil of diffusion vacuum pump

What about the oil return from diffusion pump? If the vacuum gauge is not damaged, the oil return is generally not needed to be repaired. The main purpose is to clean the oil of diffusion pump in vacuum chamber. It's better to use gasoline to wipe the vacuum chamber wall all over again, and then wipe it with alcohol again. Oil must be clean is the most important, if there is oil in the room, there will be white film plating, film quality is very poor and other phenomena, not because of the damage of electroplating equipment, but because of oil in the vacuum chamber. 

1. The cooling water is blocked or the water pressure is not enough, which leads to the decrease of cooling capacity, the upper part of diffusion pump becomes hot, and the oil vapor cannot be liquefied well. The solution is to connect the inlet pipe of diffusion pump with 4MPa air source to blow out the scale, and connect the outlet pipe with 4MPa air source. If the scale is large and firm, dilute hydrochloric acid can be added. Or replace the diffusion pump.

2. The heating temperature is too high, because the power of the diffusion pump heater is not consistent with the rated power, too high, resulting in a large amount of steam, which can cause oil return. The problem can be solved by replacing the electric furnace wire.

3. If the oil filling quantity is too high, the steam circulation will be slow and the steam will be trapped when it is compressed to the lower level, which will cause oil return. The control of oil filling amount according to the information provided by the manufacturer can be avoided.

4. Oil oxidation, diffusion pump oil oxidation, viscosity and steam flow are affected, can not reach the injection speed, naturally returned to the vacuum chamber. It can be said that the diffusion pump is removed, the pump core is taken out, cleaned with 120 ° gasoline, then polished, the carbon deposit and black oxide layer are polished off, then cleaned and dried with 120 ° gasoline again, and then installed, the diffusion pump oil or silicone oil is poured in, and the work can be started after heating several times. Prevent contamination of workpiece.

5. If the working time of diffusion pump is more than 8-10 years, or in harsh environment, replacement can be considered. Improve work efficiency and maintenance cost.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Pressure of stainless steel vacuum pump

For the knowledge of stainless steel vacuum pump, I believe you have a certain understanding, in order to have a better use of it, we should understand its calculation method, the following is a brief introduction for you. 

Vacuum degree = atmospheric pressure absolute pressure (atmospheric pressure is generally 101325pa, the ultimate absolute pressure of water ring vacuum pump is 3300pa, and the limit absolute pressure of vane vacuum pump is about 10Pa)

1. Limit relative pressure: the relative pressure is how much lower the measured internal pressure is than the "atmospheric pressure". It shows that the actual value of system pressure is lower than that of atmospheric pressure. As the air inside the container is pumped, the pressure inside 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. Limit absolute pressure: the absolute pressure is how much higher the measured internal pressure is than the "theoretical vacuum (theoretical vacuum pressure value is 0Pa)". 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 stainless steel vacuum pump is higher than the theoretical vacuum value. So when expressed in absolute vacuum, there is no negative sign in front of the value.


CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Roots vacuum pump pipeline installation

From the operating condition of Roots vacuum pump, the center of key devices mainly focuses on the planning of main equipment and the sealing of pipeline devices. As long as these work can follow the correct steps, the application of water ring pump is a fundamental guarantee. Often in the process of installation and commissioning, the pipeline of this kind of product is also very important, whether its sealing is good or not Tie to the operation of the whole set of equipment, if the device can not be well sealed, it may lead to foreign matters or other reasons to make the pump out of order. 

Therefore, the pipeline connection of Roots vacuum pump is also an important work. When using pipeline materials and various valves, it is necessary to effectively seal the connection points of each pipeline according to the application description, so that it can reach the corresponding range. If there is leakage and other problems, the pipeline should be checked in time to see whether it is the problem of sealing formation and repair it in time The operation condition of water ring pump is stabilized.

It is the biggest assistance for Roots vacuum pump to strengthen the pipeline and the devices at each joint. This is the sign that it can complete stable operation. It is also through these small device work that the utilization of vacuum pump is truly demonstrated. After the smooth operation, it also clarifies the correct device and good sealing, which adds more favorable elements to the consumption process.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

double stage rotary vane vacuum pump principle

The working performance of two-stage rotary vane vacuum pump is composed of high-pressure stage and low-pressure stage. Its suction port is connected with vacuum container or vacuum equipment. During operation, a large amount of gas in the container will be inhaled and discharged. When the rotary vane vacuum pump obtains the vacuum, the exhaust valve plate of the high pressure stage will be closed, and the gas inhaled by the high pressure stage will be transferred to the second stage, which will be inhaled and discharged by the second stage, so that the vacuum equipment can obtain a certain vacuum. 

The technical parameters of the rotary vane vacuum pump are 6 × 10-2Pa. According to the user's use, the vacuum booster pump can be equipped. The rotary vane vacuum pump is used as the front stage pump. As the suction force of the booster pump is strengthened, the front stage pump is continuously removed, which can make your equipment obtain higher vacuum.

Vertical Dry Screw Vacuum Pump

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Adjustment method of axial clearance of vacuum pump unit

Together to explore the vacuum pump unit axial clearance adjustment method, I hope to help you.

1. The axial clearance of the impeller is kept at about 2-4mm by pre adjustment to prevent the shaft from extending due to the axial force of the vacuum pump unit and the screw tightening, resulting in the friction between the impeller and the guide vane surface.

Pre adjustment method: after the deep well water pump is installed, remove the motor cover, turn the adjusting nut with a wrench, and rotate the coupling anticlockwise by hand. When the coupling and transmission shaft can rotate freely, it means that the rotating part of the water pump has been lifted by the adjusting nut, and the impeller has a gap. Use a wrench to rotate the adjusting nut (press the coupling by hand), and lower the transmission shaft. When the impeller clearance disappears, the impeller and the guide vane rub, and the coupling cannot be turned by hand. When the transmission shaft is hoisted again to make the axial clearance reach 2-4mm, the position of the adjusting nut is fixed to complete the pre adjustment.

2. After 16-20h operation, the size of each part has reached a stable state, and the final adjustment can be carried out. The adjustment method of final regulation is the same as that of pre adjustment.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Vacuum pump market and its application fields

 Vacuum pump is a kind of equipment which can produce, improve and vacuum in a certain closed space. Vacuum pump can be defined as: chemical or physical-chemical method to be pumped out of the container to obtain vacuum equipment or equipment. With the development of vacuum application, many kinds of vacuum pumps have been developed, and their pumping speed has increased from 0.0 to hundreds of thousands and millions of liters per second. According to the working principle of vacuum pump, vacuum pump can be divided into two types: gas transfer pump and gas trap pump. 

With the increasing demand for the pressure scale in the field of vacuum application technology and scientific research, most of them need to be pumped by several vacuum pump vacuum pumping systems before they can meet the demand of research process. Because the operation scale of vacuum application is very wide, so the vacuum pump can't completely operate the pressure scale, so it can only be used according to different operation requirements Empty pump.

In order to use conveniently and meet the needs of various vacuum technology processes, water ring vacuum pump sometimes combines various vacuum pumps according to their functional requirements and is used in unit type. The working principle of vacuum pump is also called water ring vacuum pump. Water ring pump began to be used as self suction pump, and then gradually used in oil, medicine and food and many other industrial parts. In many technical processes of industrial production, such as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum moisture regain and vacuum degassing, water ring pump has been widely used.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Noise reduction method of slide valve vacuum pump

Slide valve vacuum pump is also a kind of vacuum pump widely used in many vacuum equipment. It has the advantages of high pumping speed, simple structure, reliable function and high vacuum degree, so it has become a product with large demand. However, the primary problem of the pump is that the noise and oscillation are relatively large, which will have a bad impact on the environment of the operating unit, and will damage the service life of the vacuum system. 

Therefore, it is of great significance to improve the noise and function of the slide valve vacuum pump and extend the working life and power. According to the literature [discussion on the noise mechanism of the slide valve vacuum pump], it is known that the main reason for the high noise of the slide valve pump is the impact of oil and gas. In order to reduce the impact noise of the slide valve vacuum pump, the method widely used in China is to reduce the impact by lowering the rotating speed of the slide valve pump. For example, if the rotation speed of h150 slide valve pump is changed from 540r / min to 480r / min, the noise can be reduced by more than 3dba.

However, under the condition of constant pumping speed of slide valve pump, decreasing the speed of pump means increasing the volume of pump, which is obviously not a scheme. Therefore, it is necessary to explore other useful methods to reduce noise. The reference [acoustic manual] indicates that sound is transmitted in the pipeline, and when the cross-sectional area of the pipeline changes, the acoustic impedance Z also changes. At the variable cross-section, due to the change of impedance, part of the incident sound wave will be reflected back to the original pipe, and then the incident sound wave will be attenuated to achieve the effect of noise elimination. In the exhaust system of the slide valve vacuum pump, the air flow section changes many times from the exhaust hole of the pump cavity to the exhaust pipe of the oil tank. Assuming that the sound attenuation function of the variable cross-section pipeline is reasonably used, the impact noise of the underground sliding valve vacuum pump can also be used.

API 681 Vacuum Pump

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump 

Effect of pressure on corrosion resistant vacuum pump

The use of corrosion-resistant vacuum pump is under the action of a certain pressure, for the pressure formed by different altitudes, the impact of vacuum pump is different. The use of corrosion-resistant water ring vacuum pump skillfully uses this principle. 

Corrosion resistant vacuum pump is used to pump the gas in the system, and then discharge to the surrounding atmosphere to form a vacuum, or pump the surrounding atmosphere to discharge into the system to form pressure. Obviously, the ambient atmospheric pressure has an important influence on the performance of corrosion-resistant water ring vacuum pump. The design of corrosion-resistant water ring vacuum pump is based on the assumption that the ambient pressure is a standard atmospheric pressure. All its performances refer to the performance under this condition. Due to the requirements of process flow, the inlet or outlet pressure of corrosion-resistant water ring vacuum pump is sometimes not equal to one atmospheric pressure even if it is operated at sea level around one standard atmospheric pressure. For example, the inlet of some corrosion-resistant water ring vacuum pump requires the vacuum of the system, while the outlet requires compressed gas, that is to say, it is required to be used as a vacuum pump and a compressor at the same time. It is also possible to master the changes of pump performance according to the law of the influence of atmospheric pressure on pump performance.

If we have mastered the law of the influence of different atmospheric pressure caused by altitude on pump performance, we can design corrosion-resistant water ring vacuum pump suitable for each altitude area according to this law, and we can also convert the operation of corrosion-resistant water ring vacuum pump under non-standard atmospheric pressure conditions (such as in different altitude areas) according to this law In this way, the corrosion-resistant water ring vacuum pump meeting the requirements can be correctly selected.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Reciprocating vacuum pump

 Reciprocating vacuum pump is a double acting vacuum pump made in the former Soviet Union. It is composed of piston, air valve, cylinder, crosshead, connecting rod, crank and other parts. The bearing bush and cylinder of vacuum pump are supplied by special lubrication system. The lubricating oil brands are large and the consumption is large. Due to the high heat generated by gas compression, the room temperature is still as high as 40 ℃ in summer, even though it is equipped with cylinder cooling system, which is unfavorable to the equipment and the body. Moreover, the maintenance of the equipment is inconvenient, the failures are frequent, the maintenance period of cylinder cleaning and pad grinding is long, and the consumption of spare parts is large. 

2be water ring vacuum pump is a single-stage and single action vacuum pump produced by referring to foreign advanced technology. It is an energy-saving product. 2be water ring vacuum pump adopts axial suction and exhaust structure, mainly composed of pump body, impeller, main shaft, drive side distributor, non drive side distributor side cover, automatic drain valve and other parts. The impeller is eccentrically installed in the pump body. When the impeller rotates, the pump body is affected by centrifugal force and forms a rotating liquid ring on the inner wall of the pump. The gap between the impeller end face and the adapter is sealed by liquid. During the rotation process of the impeller at the first half rotation (passing through the suction hole), the volume of the sealed cavity gradually expands, and the gas is inhaled from the suction hole, and then rotates in the latter half rotation (passing through the exhaust hole) In the process, the sealing volume gradually reduces, and the gas is discharged from the exhaust hole to complete a gas extraction process.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Impeller machining of water ring vacuum pump

Impeller is an important part of water ring vacuum pump, which plays an important role. From blank processing to mechanical processing, every step of this component should meet the requirements of size, quality and material. Only in this way can we achieve stable operation. The processing of impeller should be standardized, and each step of processing should be accurate, and small links should not be ignored Only in this way can the quality of the whole vacuum pump be improved. 

The blank casting of impeller is directly related to the machining step. The reliable quality of the blank can ensure that there will be no defects such as fracture and deformation during machining. The components of water ring vacuum pump have accurate design requirements, and the size of impeller is strictly measured. Therefore, the requirements of design drawings should be strictly followed from casting to machined parts Each processing link should be accurate to avoid production waste.

Whether the impeller production of water ring vacuum pump conforms to the design standard is inspected and passed by the quality inspection department. If only the wheel fails to meet the standard, problems will occur during assembly, which will easily lead to the overall failure of the pump. Standardized and standard unified examination should be conducted for the impeller processing. No matter in which link, the operator should be responsible and play a good technical ability, Strengthen their sense of responsibility and do the work in place.

Vacuum System Of Tissue Paper Machine

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Eccentric machining method for eccentric parts of rotary vane vacuum pump

Rotary vane vacuum pump and slide valve vacuum pump belong to oil seal mechanical vacuum pump. In structure, there is an off center position relative to the pump cavity. This position is the central position for installing the rotating parts. Its relative size often affects the assembly and vacuum performance of vacuum pump. Either the rotating parts cannot be installed or the inner wall of the pump chamber cannot be contacted well after being installed No sealing and poor vacuum performance. 

Therefore, whether in production or repair, we should pay attention to the eccentric processing problem, and strictly control the eccentric size. For 2x series rotary vane vacuum pump, the eccentricity is on the middle diaphragm, and the bearing supporting the rotor is installed on the eccentricity. The position of the bearing affects the assembly clearance of the rotor. Therefore, if it is not done well, the vacuum degree is often unstable, or the outer circle dimension tolerance of the rotor must be modified to make up for it. This is good for maintaining a small number of pumps, but not for mass production.

If you want the dimensional accuracy to be stable, it depends on the tooling. Among the various errors in the processing process, the selection of positioning reference is the most important.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Roots rotary vane vacuum pump unit operation

The first very important process of using roots rotary vane vacuum pump unit is the preparation before starting. Check all parts, check whether the cooling circuit of roots pump is smooth, and check the exhaust valve to ensure that it is in the open state. Pay attention to check to ensure that the oil level of each pump is on the oil level line. If it is below the oil level line, it is required to add oil. If it exceeds the oil level line, it should be drained. Check whether the rotation direction of the motor is the same as that of the arrow on the pump. If the use of equipment is suspended for a long time, are the parts rolling sensitive when starting up again? If it can't roll, it is necessary to roll several revolutions by manpower. It is absolutely forbidden to start it by force with the motor, which will cause serious damage to the pump. 

The second process is to pay attention to the problems when starting. Before starting, the cooling water valve of roots pump should be opened, and the front stage pump of rotary vane vacuum pump should be started to open the inlet valve of front stage pump together. Open the air inlet valve of the front and rear stage, and turn on the air valve smoothly. During the working process of the equipment, if the temperature of some parts is too high, there may be irregular noise, or other abnormal phenomena. The roots rotary vacuum unit should stop checking immediately.

The third operation is to stop the problem that the device needs to pay attention to. Before stopping, the inlet valve should be closed first, and the vent valve of roots pump should be opened. Then the equipment will stop actively. Close the inlet valve of the front stage pump and stop the front stage pump together. The valve of the cooling water device is closed. If the operation is stopped for a long time, the roots rotor vacuum unit should drain all the water in the cooling water jacket in the cold zone, otherwise, the water in the sleeve will swell and cause damage due to freezing.

Finally, repair and maintenance, roots rotary vacuum unit should adhere to the environment around the equipment clean and boring. Always check the smoothness of each part. If there is a lack of smooth oil, it should be made up in time. When the lubricating oil is polluted, clean lubricating oil should be replaced in time. After replacement, the bolts should be tightened from the beginning to ensure the sealing environment. When disassembling and repairing, all parts must not be struck by external force. Pay special attention to the smooth and smooth sealing surface, otherwise it will cause air leakage after re installation.

H Piston Vacumm Pump Start And Stop

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

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 

Environmental protection water ring vacuum unit

The environmental protection water ring vacuum unit is designed and optimized according to the requirements of modern enterprises for environment and environmental protection, integrating the characteristics of various industries. The manufacturing unit is composed of water ring vacuum pump, waterway system, vacuum system, cooling system, silencing system and control system. It is mainly designed and manufactured according to the specific conditions of customers 

1. Ensure that the gas and liquid with pollution are concentrated and will not leak, and truly achieve zero pollution

2. Low noise, the use of noise abatement facilities, will not cause noise pollution, especially suitable for the working environment of man and machine together

Application: daily chemical, medical (especially dental), food, pharmaceutical, electronic, laboratory.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

single acting reciprocating vacuum pump working 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.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces