The Working Principle and Performance Characteristics of Various Pumps
The pump is mainly used to transport liquids such as water, oil, acid and alkali liquids, emulsions, suspension emulsions and liquid metals, but also liquids, gas mixtures and liquids containing suspended solids. This article will work with you to learn the working principle and performance characteristics of various pumps. I hope it will be helpful to everyone (of course, the pumps here are all pumps for vacuum).
First, Gear pump
The teeth of the two gears of the gear pump are separated from each other, forming a low pressure, the liquid is sucked in, and the shell wall is sent to the other side. The two gears on the other side are closed together to form a high pressure to discharge the liquid.
Performance characteristics of gear pump
The advantages of gear pump
Simple and compact structure, small size, light weight, good processability, cheap price, strong self-priming force, insensitive to oil pollution, large speed range, resistance to impact loads, convenient maintenance and reliable work.
Disadvantages of gear pump
Radial force imbalance, large flow artery flow, large noise, low efficiency, poor interchangeability of parts, difficult to repair after wear, can not be used for variable pump.
Second, multi-stage centrifugal pump
Multi-stage centrifugal pump is equivalent to multiple centrifugal pumps connected in series.
Multi-stage centrifugal pump performance characteristics
Compared with single-stage pumps, multi-stage centrifugal pumps differ from multi-stage pumps in that they have more than two impellers, which can absorb and pressurize water in multiple stages in stages, thereby lifting the water to a high position. Increase or decrease the number of stages of the pump impeller as needed. Multi-stage pumps are mainly used for mine drainage, urban and factory water supply, and agricultural irrigation is rarely used. It is only suitable for high-lift, small-flow high-mountain mountain areas to solve the problem of drinking water for humans and livestock. Multi-stage high-center pumps have two types of vertical and horizontal multi-stage centrifugal pumps. The shaft of the multi-stage centrifugal pump is equipped with two impellers connected in series, which can also achieve higher heads than ordinary single-stage centrifugal pumps. Compared with reciprocating pumps such as piston pumps and diaphragm pumps, it can also pump larger flow rates. Multi-stage centrifugal pumps have high efficiency and can meet the requirements of high head and high flow conditions. They have been widely used in petrochemical, chemical, power, construction, fire protection and other industries.
Because of its special characteristics, compared with single-stage centrifugal pumps, multi-stage centrifugal pumps have different and higher technical requirements in terms of design, use, maintenance and repair. It is often people’s negligence or inadequate consideration in some details that make the multi-stage centrifugal pumps frequently cause abnormal wear, vibration, shaft failure and other failures after they are put into use, which also causes downtime.
Third, the centrifugal pump
When the centrifugal pump is in operation, the liquid fills the pump casing, and the impeller rotates at high speed. The liquid generates high speed under the action of centrifugal force. The high-speed liquid passes through the gradually expanding pump casing channel, and the dynamic pressure head is converted into a static pressure head.
Performance characteristics of centrifugal pump
- High efficiency and energy saving: CFD is used to calculate fluid dynamics, analyze the relationship between pressure distribution and speed distribution in the pump, optimize the design of the flow channel of the pump, ensure that the pump has efficient hydraulic profile, and improve the efficiency of the pump.
- Convenient installation and maintenance: Vertical pipeline structure, the inlet and outlet of the pump can be installed in any position and direction of the pipeline like a valve, which is extremely convenient for installation and maintenance.
- Stable operation, safe and reliable: The motor shaft and the pump shaft are coaxial and directly connected, with high concentricity, stable operation, safe and reliable.
- Stainless steel shaft sleeve: The mechanical seal of the shaft is relatively easy to be rusted. Once the direct-coupled pump shaft is rusted, the mechanical seal is liable to fail. STG pumps here are fitted with stainless steel shaft sleeves to prevent corrosion, improve shaft life, and reduce operating and maintenance costs.
5.Bearings: Among the motors equipped with pumps, the shaft extension end bearings below Y [Y2] 280 (including the blade end bearings below Y180) adopt closed bearings. In normal use, the maintenance of motor bearings is unnecessary.
- Mechanical seal: The mechanical seal base is generally made of rubber bellows. The traditional mechanical seal center shaft seal is changed from an O-ring line seal to a rubber two-face seal, which improves the sealing effect in clear water.
Fourth, screw pump
The twin screw pump is very similar to the gear pump. One screw rotates to drive the other screw. The liquid is intercepted in the meshing chamber, propelled in the direction of the rod axis, and then squeezed to the center for discharge.
Performance characteristics of screw pump
The advantages of screw pump:
- Wide pressure and flow range. The pressure is about 3.4-340 kgf / cm 2 and the flow can reach 100cm3 / min;
- the type and viscosity of the liquid to be transported are wide;
- because the inertia force of the rotating parts in the pump is low, high speed can be used;
- Good inhalation performance and self-absorption ability;
- the flow is uniform and continuous, the vibration is small, and the noise is low;
- Compared with other rotary pumps, it is less sensitive to incoming gas and dirt;
- Solid structure, easy installation and maintenance.
Disadvantages of screw pump
Screw processing and assembly requirements are high; pump performance is more sensitive to changes in liquid viscosity.
Five, reciprocating pump bypass adjustment
The reciprocating pump is a positive displacement pump. When the flow provided by the pump is greater than the required flow in the pipeline, a part of the flow is required to return to the inlet of the reciprocating pump, and bypass regulation is required.
Six, pneumatic diaphragm pump
In order to prevent the movable column from directly contacting the corrosive material and liquid when the pneumatic diaphragm pump is working, separating the cylinder cavity from the liquid material diaphragm is essentially the principle of a reciprocating pump.
Performance characteristics of pneumatic diaphragm pump
Pneumatic diaphragm pump is a new type of conveying machine and is the most novel type of pump in China. Compressed air is used as the power source for various corrosive liquids. There are four materials of pneumatic diaphragm pump: engineering plastic, aluminum alloy, cast iron, stainless steel. Pneumatic diaphragm pump adopts nitrile rubber, neoprene, fluoro rubber, polytetrafluoroethylene and polyhexaethylene according to different liquid media. To meet the needs of different users. It has been placed on various special occasions and used for pumping the medium that cannot be pumped by conventional pumps, and has achieved satisfactory results.
- The pump will not overheat: compressed air is used as power, which is an expansion and heat absorption process when exhausting. The temperature of the pneumatic pump is reduced during operation and no harmful gas is discharged.
- no sparks: the pneumatic diaphragm pump does not use electricity as power, and prevents static sparks after grounding
- can pass the liquid containing particles: because the volumetric work and the inlet is a ball valve, it is not easy to be blocked.
- Extremely low shear force on the material: how it sucks in and spits out during work, so the agitation of the material is minimal, which is suitable for the transportation of unstable materials
- The flow rate can be adjusted, and a throttle valve can be installed at the material outlet to adjust the flow rate.
- It has the function of self-priming.
- It can run dry without danger.
- Can work diving.
- The fluid that can be transported is extremely wide, from low viscosity to high viscosity, and corrosive to get thick.
- No complicated control system, no cables, fuses, etc.
- Small size, light weight, easy to move.
- It is easy to maintain without lubrication, and will not pollute the working environment due to leakage.
- The pump can always maintain high efficiency and will not decrease due to wear.
- 100% energy utilization. When the outlet is closed, the pump will automatically stop, and the equipment will move, wear, overload, and generate heat.
- No dynamic seal, easy maintenance and avoid leakage. No dead spots when working.
Seven, reciprocating pump
When the reciprocating pump works, the piston moves to the right, the pressure in the cavity is reduced, the upper valve is depressed, the lower valve is lifted, and the liquid is sucked in;
Performance characteristics of reciprocating pump
The advantages of reciprocating pump
- High exhaust pressure can be obtained, and the flow has nothing to do with the pressure. The suction performance is good and the efficiency is high. The steam reciprocating pump can reach 80% ~ 95%.
2 In principle, any medium can be transported, which is hardly limited by the physical or chemical properties of the medium;
- the performance of the pump does not change with changes in pressure and viscosity of the conveying medium.
Other pumps do not have the above-mentioned outstanding advantages of reciprocating pumps, but they have a simpler structure and are more convenient to use and operate. They also have the advantages of small size, light weight, uniform flow, and serial production.
Disadvantages of reciprocating pump
The flow is not very stable. It is larger than the centrifugal pump at the same flow; the mechanism is complex; the amount of capital is large; it is not easy to maintain.
Eight, double action reciprocating pump
When the double-action reciprocating pump works, the piston moves to the right, sucks liquid from the lower left, and discharges liquid from the upper right. The piston moves to the left, sucks liquid from the lower right, and drains liquid from the upper left. The piston reciprocates once and sucks and discharges liquid twice, and the flow is more uniform.
Nine, water ring vacuum pump
The impeller of the water ring vacuum pump is eccentric with the pump casing. The pump casing is filled with a certain amount of water, and the impeller rotates so that the water forms a water ring. When the adjacent blades (such as the red blades in the figure) rotate, the space (air chamber) formed with the water ring becomes larger, that is, air intake, and the air (air chamber) gradually becomes smaller, that is, air is compressed. Multiple sets of adjacent blades, that is, multiple sets of reciprocating compression. The structure is compact, the work is reliable and the flow is uniform. Therefore, it is mostly used to transport or pump flammable, explosive and corrosive gases in chemical production. Water ring vacuum pumps have low efficiency due to large energy loss due to the impeller stirring liquid.
Performance characteristics of water ring vacuum pump
The advantages of water ring vacuum pump
- Simple structure, low manufacturing accuracy requirements, easy processing.
- The structure is compact and the rotation speed of the pump is high. Generally, it can be directly connected to the motor without the need of a speed reduction device. Therefore, with a small structure size, a large exhaust volume can be obtained, and the footprint is small.
3.the compressed gas is basically isothermal, that is, the temperature change of the compressed gas process is small.
- Because there is no metal friction surface in the pump cavity, there is no need to lubricate the pump, and the wear is very small. The seal between the rotating member and the fixed member can be directly completed by a water seal.
- Even suction, stable and reliable work, simple operation and convenient maintenance.
Disadvantages of water ring vacuum pump
- Low efficiency, generally around 30%, better up to 50%.
- The vacuum degree is low, not only because of structural limitations, but more importantly, due to the saturated vapor pressure of the working fluid. With water as the working fluid, the ultimate pressure can only reach 2000 ~ 4000Pa. Use oil as working fluid, up to 130Pa.
In short, because the gas compression in the water ring pump is isothermal, it can remove flammable and explosive gases. Because there is no exhaust valve and friction surface, dusty gas, condensable gas and gas-water mixture can be removed. With these outstanding features, despite its low efficiency, it is still widely used.
Ten, vortex pump
The liquid in the groove of the blade of the vortex pump is thrown by the centrifugal force toward the flow channel and pressurized once; the liquid in the flow channel is thrown out by the liquid in the groove to form a low pressure, enters the groove again, and pressurizes again. The vortex movement of the groove of a road leads to a higher head.
Performance characteristics of vortex pump
Advantages of vortex pump
1.W type single-stage direct-connected vortex pump is used for sucking fresh water or liquid with physical and chemical properties similar to water. The liquid temperature is not more than 60. It is often used for boiler water supply. , Machinery manufacturing, aquaculture, fixed fire control, heat exchanger group, agricultural remote sprinkler irrigation and other departments have a wide range of applications.
- The characteristics of small volume and light weight of the vortex pump have great advantages in marine installations. Self-priming with self-priming capability or with the aid of a simple device.
- It has a steep drop head characteristic curve, so it is not sensitive to pressure fluctuations in the system. Some vortex pumps can achieve mixed vapor-liquid transmission. This is of great significance for pumping gas-containing volatile liquids and high-temperature liquids with high vaporization pressures.
- The structure of the vortex pump is simple, and the casting and processing processes are easy to implement. Some vortex pump parts can also use non-metal materials, such as plastic, nylon molded impeller, etc.
Disadvantages of vortex pump
- The efficiency is low, the highest is not more than 55%, and the efficiency of most vortex pumps is 20-40%, which hinders its development to high power.
- the cavitation performance of the vortex pump is poor.
- Vortex pumps cannot be used to pump viscous media. As the liquid viscosity increases, the pump’s head and efficiency will decrease sharply, and the viscosity of the medium is limited to 114 centistokes.
- The strict radial and axial clearance requirements between the vortex pump impeller and the pump body bring certain difficulties to the processing and assembly process.
- The pumped medium is limited to pure liquid. When solid particles are contained in the liquid, the axial and radial clearances will increase due to wear, which will reduce the performance of the pump or cause the scroll pump to fail to work.
Eleven, vane pump
Because of the history of vane pumps, there are two types according to the different types: a) specifically refers to the vane pump in the volumetric pump. 2) Refers to the three pumps (centrifugal pump, mixed flow pump, axial flow pump) of power pump or other special pumps. This type of pump product is generally not called a vane pump. But as a monograph, almost all vane pumps refer to centrifugal pumps, mixed-flow pumps, axial-flow pumps, etc. (the three types are called impeller pumps in the first-level construction engineer 2014 “Electrical Engineering and Management Practice”). According to whether the theoretical displacement per revolution is a fixed value or a variable value, it can be divided into a vane variable pump and a vane fixed displacement pump.
Vane pump performance characteristics
Vane pump advantages
- the output flow is more uniform than that of a gear pump, the operation is stable, and the noise is low.
- High working pressure and high volumetric efficiency.
3.Single-acting vane pump (Tokimec Tokyo meter vane pump) is easy to achieve flow regulation, while double-acting vane pump is balanced by the radial hydraulic pressure on the rotor, which has a long service life.
4.Compact structure, small outline size and large flow.
Disadvantages of vane pump
- The self-priming performance is worse than that of gear pumps, and the oil-absorbing conditions are strict. The speed range must be in the range of 500 ~ 1500 r / min.
- it is more sensitive to oil pollution, the leaves are easily bitten by impurities in the oil, and the work reliability is poor.
- the structure is more complicated, the precision of parts manufacturing is higher, and the price is higher. Vane pumps are generally used in medium pressure (6.3 MPa) hydraulic systems and are mainly used for machine tool control, especially double-action vane pumps (Tokyo Meter SQP vane pumps) are widely used in precision machine tools because of the small flow pulsation .
Twelve, steam jet pump
When the steam jet pump is in operation, the steam enters the nozzle and is ejected at high speed to generate low pressure. The gas is sucked in and mixed in the mixing chamber. After expanding the tube, the kinetic energy is converted into pressure energy. If the inhaled gas comes from a container, the container is decompressed, which is called a jet vacuum pump.
Performance characteristics of steam jet pump
- The pump has no mechanical moving part and is not limited by conditions such as friction, lubrication, vibration, etc., so it can be made into a pump with a large suction capacity. As long as the structural material of the pump is properly selected, it is extremely beneficial to exclude corrosive gases, gases containing mechanical impurities, and water vapor.
- simple structure, light weight, small footprint.
- The working steam pressure is 4 ～ 9 × 105Pa, which is available in general metallurgical, chemical, pharmaceutical and other enterprises.
Because of the above characteristics, water vapor jet pumps are widely used in industrial sectors such as metallurgy, chemical industry, medicine, petroleum and food.
Thirteen, axial flow pipeline pump
The impeller of the axial flow pipeline pump is designed as an axial flow type. The speed is very high. If the motor power, impeller diameter, and pipe diameter are large enough, the flow can be large.
Axial flow pipeline pump performance characteristics
1.The pipeline pump has a compact structure, integrated pump and machine, and small size. Its vertical structure has a small installation area, runs smoothly, and requires no adjustment during installation.
2.The inlet and outlet of the pump are designed with flanges of the same specifications and located on the same center line, which can be directly installed on the pipeline like a valve, and the center is low, which is convenient for pipeline layout and installation.
3.The pump is coaxial with the motor and the axial dimension is short, which makes the pump run more smoothly and the noise is low.
4.Abolish the traditional shaft seal method to avoid the leakage of the conveying medium, so it has the significant feature of completely no leakage.
Fourteen, self-priming pump
The working principle of the self-priming pump is: before the pump is started, fill the pump casing with water (or the pump casing itself has water). After starting, the impeller rotates at a high speed to make the water in the impeller channel flow to the volute. At this time, the inlet forms a vacuum, so that the water inlet check valve opens, the air in the suction pipe enters the pump, and reaches the outer edge through the impeller channel.
Performance characteristics of self-priming pump
Self-priming pump is a self-priming centrifugal pump. It has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long life, and strong self-priming capacity. The pipeline does not need to be installed with a bottom valve, and it is only necessary to ensure that a quantitative fluid is stored in the pump body before work. Different liquids can use self-priming pumps of different materials.
- Strong drainage capacity: special impeller anti-blocking design ensures the pump is efficient and non-blocking.
- High efficiency and energy saving: It adopts excellent hydraulic model, and its efficiency is 3 ~ 5% higher than that of general self-priming pump.
- Good self-priming performance: The self-priming height is 1 meter higher than the general self-priming pump, and the self-priming time is shorter.
Fifteen, piston pump
When the piston pump works, the internal volume of the cylinder is repeatedly changed by the reciprocating action of the piston in the cylinder to suck and discharge fluid.
Performance characteristics of piston pump
Piston pumps are also called electric reciprocating pumps. They are divided into single-cylinder and multi-cylinder from the structure, which is characterized by higher lift. Suitable for conveying oil emulsion without solid particles at room temperature. Used for oilfield, coal seam water injection, oil injection, oil production; power pump of boring press hydraulic press, hydraulic sand clearing, ammonia liquid transport in fertilizer plant, etc. If the over-current part is stainless steel, it can transport corrosive liquids. In addition, it can also transport high-temperature tar, slime, high-concentration mortar, and high-viscosity liquids according to the different structural materials.
The piston pump is suitable for high pressure and small flow rate occasions, especially when the flow rate is less than 100 meters 3 / hour and the discharge pressure is greater than 9.8 MPa, it shows its higher efficiency and good operating performance. It has good suction performance and can pump liquids with different media and different viscosities. Therefore, it is widely used in petrochemical industry, machinery manufacturing industry, papermaking, food processing, and pharmaceutical production. The low-medium speed piston pump has low speed, which can be operated by human and animal power. It is suitable for rural water supply and small irrigation.
16.Roots Vacuum Pump
The Roots pump works similarly to a Roots blower. Due to the continuous rotation of the rotor, the pumped gas is sucked into the space v0 between the rotor and the pump casing from the air inlet, and then discharged through the exhaust port. Because the v0 space is completely closed after inhalation, the gas in the pump cavity is not compressed and expanded. However, when the top of the rotor is turned over the edge of the exhaust port, and the space v0 communicates with the exhaust side, because the gas pressure on the exhaust side is high, a part of the gas returns to the space v0, which suddenly increases the gas pressure. When the rotor continues to rotate, the gas is discharged out of the pump.
Roots vacuum pump performance characteristics
- There is a large pumping speed in a wide pressure range;
- fast start, can work immediately;
- Not sensitive to dust and water vapor contained in the pumped gas;
- the rotor does not need to be lubricated, and there is no oil in the pump cavity;
- The vibration is small, the rotor is in a good dynamic balance condition, and there is no exhaust valve;
- Small driving power and small mechanical friction loss;
7.Compact structure and small footprint;
- Low operation and maintenance costs.
Therefore, Roots pumps have been widely used in metallurgy, petrochemical, paper, food, and electronics industries.
Seventeen, rotary vane vacuum pump
The rotary vane of the rotary vane pump divides the crescent-shaped space surrounded by the rotor, the pump cavity and the two end covers into three parts A, B, and C. When the rotor rotates in the direction of the arrow, the space A communicating with the suction port The volume is gradually increasing and is in the process of inhaling. The volume of the space C, which communicates with the exhaust port, is gradually reduced, and it is in the process of exhausting. The volume of the central space B is gradually decreasing, and it is in the compression process.
Because the volume of space A is gradually increased (ie, expanded), the gas pressure is reduced, and the external gas pressure at the inlet of the pump is stronger than the pressure in space A, so the gas is sucked in. When the space A is isolated from the air inlet, it is turned to the position of the space B, the gas starts to be compressed, the volume gradually decreases, and finally communicates with the air outlet. When the compressed gas exceeds the exhaust pressure, the exhaust valve is pushed open by the compressed gas, and the gas is discharged to the atmosphere through the oil layer in the oil tank. The continuous operation of the pump achieves the purpose of continuous pumping. If the exhausted gas is transferred to another stage (low vacuum stage) through the air passage, it is pumped away by the low vacuum stage, and then compressed into the atmosphere and discharged to the atmosphere, forming a two-stage pump. At this time, the total compression ratio is borne by two stages, thus increasing the ultimate vacuum.
Performance characteristics of rotary vane vacuum pump
Rotary vane vacuum pump (rotary vane pump for short) is an oil-sealed mechanical vacuum pump. Its working pressure range is 101325 ~ 1.33 × 10-2 (Pa) belongs to low vacuum pump. It can be used alone or as a foreline pump for other high vacuum or ultra high vacuum pumps. It has been widely used in production and scientific research departments of metallurgy, machinery, military industry, electronics, chemical industry, light industry, petroleum and medicine.
- Small size, light weight and low noise;
- Equipped with a gas ballast valve, which can remove a small amount of water vapor; in the range of ambient temperature of five degrees Celsius to forty degrees Celsius, the inlet pressure is less than 1.3X103 Pa allows long-term continuous operation, the relative humidity of the pumped gas is greater than 100 At 90 minutes, the gas ballast valve should be opened.
- It is equipped with an automatic anti-return oil check valve, which is convenient to start;
- The continuous and smooth operation of the air inlet must not exceed one minute;
- It is not suitable for the extraction of gases that are corrosive to metals, chemically react to pump oil, and contain particles of dust, and gas that contains too much oxygen, which is explosive and toxic.
18.Mud pump
Mud pump refers to the machinery that sends mud or water to the borehole during the drilling process. Mud pumps are an important part of drilling equipment. In the commonly used positive circulation drilling, it is to send the surface flushing medium-water, mud or polymer flushing liquid under a certain pressure to the bottom end of the drill bit through the high-pressure hose, faucet and the center hole of the drill string to reach The purpose of cooling the drill bit, removing the cuttings and conveying it to the surface. Commonly used mud pumps are piston or plunger type. The crankshaft of the pump is driven by the power machine, and the crankshaft drives the piston or plunger to reciprocate in the pump cylinder through the crosshead. Under the alternate action of the suction and discharge valves, the purpose of pressure feeding and circulating flushing liquid is achieved.
Performance characteristics of mud pump
- It can transport high concentration and high viscosity <10000PaS and suspension slurry containing particles.
- the conveying liquid flow is stable, no over-current, pulsation, stirring, shearing slurry phenomenon.
- the discharge pressure has nothing to do with the speed, low flow can also maintain high discharge pressure.
- the flow rate is proportional to the speed, and the flow rate can be adjusted by a speed-change mechanism or a speed-regulating motor.
- Strong self-priming ability, can directly suck liquid without installing bottom valve.
- The pump can be reversed, and the liquid flow direction is changed by the rotation direction of the pump. It is suitable for the occasion where the pipeline needs to be flushed in the reverse direction.
- Smooth running, low vibration and noise.
- Simple structure, easy disassembly and maintenance.
I-1B thick slurry pump is widely used in chemical, pharmaceutical, brewing, papermaking, food and other units.
Nineteen, gas booster pump
Krypton gas booster pump uses compressed air as power to continuously output low-pressure gas pressure. The final output pressure can be increased to twice or even dozens of times the power source pressure. It is a pollution-free gas booster. According to the output pressure and structure, it is divided into low pressure pump and high pressure pump. The low pressure pump is mainly used to maintain the normal operation of the pneumatic device when the pressure of the on-site gas source is insufficient or unstable and the minimum operating pressure of the pneumatic device cannot be guaranteed to meet the local high-pressure gas requirements of the equipment. The high-pressure pump is mainly used for pressurizing non-common compressed air. For example, nitrogen, helium, argon, etc. are pressurized to tens of MPa and loaded into a high-pressure gas storage tank.
Performance characteristics of radon gas booster pump
- The working pressure range is large. Different types of pumps can be used to obtain different pressure areas. The input air pressure and output air pressure can be adjusted accordingly. Can reach extremely high pressure, gas 90Mpa
- The flow range is wide, and only 0.1Kg air pressure can work smoothly for all models. At this time, the minimum flow rate is obtained, and different flow rates can be obtained after adjusting the intake air volume.
- easy to control, from simple manual control to full automatic control can meet the requirements.
- Automatic restart, no matter what causes the pressure drop in the holding pressure circuit, it will automatically restart to supplement the leakage pressure and keep the circuit pressure constant.
- Safe operation, using gas drive, no arc and spark, can be used in dangerous places.
- The maximum energy saving can reach 70%, because maintaining the pressure does not consume any energy.
Twenty, gas-liquid booster pump
The gas-liquid booster pump is continuously discharged by a high-pressure plunger controlled by a one-way valve, and the pressure at the outlet of the booster pump is related to the air driving pressure. When the pressure between the driving part and the output liquid part reaches equilibrium, the booster pump will stop running and no longer consume air. When the output pressure drops or the air-driven pressure increases, the booster pump will automatically start running until it stops automatically after reaching pressure equilibrium again. A single gas-controlled unbalanced gas distribution valve is used to realize the automatic reciprocating motion of the pump, and the gas drive part of the pump body is made of aluminum alloy. Wetted parts are made of carbon steel or stainless steel according to different media, and the complete set of seals of the pump are imported high-quality products, thereby ensuring the performance of the gas-liquid booster pump.
Performance characteristics of gas-liquid booster pump
- High output pressure: liquid pump up to 640MPa, air pump up to 200MPa
- Wide range of use: The working medium can be hydraulic oil, water and most chemically corrosive liquids, and has high reliability and long maintenance-free life.
3.Wide output flow range: For all models, only a small driving pressure is required to work smoothly. At this time, a small flow is obtained. After adjusting the driving air intake volume, different flows can be obtained.
- Flexible application: Different types of pumps can be used to obtain different pressure areas.
- Easy to adjust: within the pressure range of the pump, adjust the regulating valve to adjust the intake pressure, and the output hydraulic pressure can be adjusted steplessly accordingly.
- Automatic pressure holding: No matter what causes the pressure in the pressure holding circuit to drop, it will start automatically to supplement the leakage pressure and keep the circuit pressure constant.
- Operational safety: It is driven by gas, without arc and sparks, and can be used in dangerous places.
