Dry pump characteristics

The characteristics and uses of dry pumps:

Dry pump is an oil-free vacuum pump specially designed for chemical industry.
Specific advantages are that it can completely eliminate condensable gases such as water vapor, gasoline and alcohol produced in chemical production and experimental process, and has a strong ability to extract trace dust. Long service life, convenient maintenance and low maintenance cost.

The pump is very reliable and suitable for long-term continuous operation.

Less vulnerable parts, easy to replace vulnerable parts, assembled according to requirements, users can do their own maintenance.

Water ring vacuum pump application

Water ring vacuum pump is a kind of common pump, which plays an important role in our production and life. It has the advantages of convenient operation, high efficiency and low operating cost, which makes this equipment widely used.

1. Application in electric power industry: condenser vacuum, vacuum water absorption, flue gas desulfurization, vacuum exhaust, exhaust geothermal gas.

2. Application in petrochemical industry: gas recovery, gas recovery, gas boost, enhanced oil recovery, gas collection, crude oil stabilization, flammable and explosive gas compression, vacuum system in the top of crude oil vacuum distillation, vacuum crystallization and drying, vacuum filtration, vacuum transportation of various materials.

3. Applications in the industry: drying, reactor drying, distillation, degassing, crystallization, and material transfer.piston vacuum pump at best price in india

4. Application in pulp and paper production: black liquor evaporation, coarse pulp washing machine, lime mud and filter, sediment filter, vacuum dehydrator, raw material and white water degassing system, mixing box compressor, suction tank, volt roll, suction and transfer roller, vacuum press, wool suction tank, blowout box.

5. Application in plastic industry: extruder degassing, setting table (profile), EPS foaming, drying, pneumatic conveyor, vinyl chloride gas extraction and compression.

6. Application of equipment: Steam sterilization, breathing apparatus, air mattress, protective clothing, dental apparatus, central vacuum system.

7. Application in environmental protection industry: wastewater treatment, biogas compression, vacuum water addition, wastewater purification/activated sludge tank oxidation, fish pond ventilation, biogas recovery, waste treatment machine.

8. Application in food and beverage industry: salmon cleaner, mineral water degassing, salad oil and fat deodorizing, tea and condiment sterilization, sausage ham production, tobacco products humidification, vacuum evaporator.double stage water ring vacuum pump principle

Oil diffusion pump working environment

The oil diffusion pump works in high vacuum area and uses low pressure and high speed oil vapor flow as the working medium. The working process of the pump is the process of being carried to the pump outlet by the gas diffusion into the oil vapor jet. The oil diffusion pump is mainly composed of pump body, nozzle, steam guide pipe, heater, cooling pipe and so on.

The oil in the diffusion pump is heated and boiled in vacuum (about 200 C) to produce a large amount of oil vapor. The oil vapor rises through the diversion pipe and is ejected from the nozzles at high speed. Since the partial pressure of the sucked gas in the ejected oil vapor is less than that of the sucked gas at the inlet of the pump, the molecule of the sucked gas is continuously diffused into the vapor stream. Oil vapor impinges on the absorbed gas molecules, causing them to flow along the direction of oil vapor flow to the pump wall at a high speed, and the gas molecules are reflected back from the pump wall by the impact of oil vapor and re-flow along the direction of steam flow to the pump wall. After several collisions, the gas molecules are compressed to the low vacuum end, and then the vapor from the lower nozzles is compressed in multiple stages, and finally pumped out by the front stage pump. At the same time, the oil vapor is condensed on the cooling pump wall and then returned to the oil pan to be reheated, thus circulating.

Oil used in oil diffusion pump should be saturated vapor pressure is very low, good thermal stability of oil, in order to prevent the oxidation of pump oil, oil diffusion pump must be pre-pumped to a certain vacuum with Roots vacuum pump, oil pan can start heating. Diffusion pump should be used in series with the front-stage pump, the front-stage pump generally uses oil-sealed rotary mechanical vacuum pump, such as rotary vane vacuum pump, slide valve vacuum pump. The oil diffusion pump system with high vacuum or ultra-high vacuum can be obtained by combining diffusion pump with different front-stage pumps.

New Dry screw vacuum pump

Dry-type screw vacuum pump is a suction device which produces suction and exhaust action by synchronous reverse high-speed rotation of a pair of screw in the pump shell. The two screw are corrected by fine dynamic balance, and the bearing is supported and installed in the pump shell. Because there is a certain gap between the screw and the screw, there will be no friction between them when running.

Screw vacuum pump is a high technology content of green scientific and technological products, high precision, high product quality, stable operation, not easy to break down. In the past, dry screw vacuum pumps used by many enterprises in China were almost imported products with high cost. The successful development and production of this product can completely replace imported products in a wide range of performance, reducing the operating costs of enterprises, but also China's first ownership of a new dry screw vacuum pump.

Dry screw vacuum pump is mainly used for high purity vacuum process, vacuum degree is extremely high, so it can adapt to harsh industrial and mining, can deal with condensable steam containing gas, containing micro particles. It has the characteristics of low energy consumption, high pumping speed, long service life, maintenance-free and lubrication-free, so it will completely replace the vacuum equipment with low technology content in the petrochemical, metallurgical, pharmaceutical, biological engineering, paper making, Microelectronic Engineering and other industries.Rotary-Vane-vacuum-pump

Water ring vacuum pump used in coal industry

With the increasing attention to coal mine safety, the water-ring vacuum pump used in coal mine will also put forward higher requirements and standards. Efficient, fast and thorough is the main development direction of annular vacuum pump for coal mine. Next we will understand the application of a water ring vacuum pump in the coal industry, hoping to help you.

1. Coal making

In the vacuum filtration process of refined coal, it is generally required to be able to withstand the impact of air flow and water on the air flow water ring vacuum pump, which needs to be equipped with a pre-separator to stabilize the pressure to separate the liquid.

2, dust removal

Large amount of dust and complex components are the main sources of surface pollution in mining area. With large water-ring vacuum pump as the main pump, equipped with separation, dust removal, protection and other devices to achieve dust recovery and utilization in mining areas, but also played a role in purifying the air.

3. Production of antistatic equipment

In the process of producing anti-static and flame-retardant conveyor belts and underground clothes, vacuum slurry immersion process is adopted to make anti-static and flame-retardant agent enter the conveyor belts instead of the original spraying process, which is more safe and reliable.

4. Vacuum pump drying cable

Mine cable in a relatively humid mine for a long time, it is easy to reduce insulation performance. The water-ring vacuum pump is used as the pumping equipment. The cable is connected with low voltage and high current, which generates heat through the cable and dries under the condition of low oxygen concentration. The oxidation phenomenon is effectively prevented and the aging process of the cable is prolonged.

5. Gas extraction

Gas, also known as coal-bed methane, is mainly composed of methane. The underground coal seam gas content is quite rich, if the natural emission into the air will cause serious greenhouse effect, more serious is that there will be explosion danger, every year because of gas explosion to bring serious losses to the family, gas discharge has become an important job in the coal industry. As we all know, water-ring vacuum pump is an equipment for extracting flammable and explosive gases such as gas, because water is used as the medium in the whole pumping and exhausting almost isothermal state. It is worth noting that if the gas extraction should be equipped with explosion-proof motor.vacuum-equipments

Vacuum pump unit performance

Vacuum pump unit is mainly pumped by one type of pump, and other types of pumps in series work together to enhance the role of a single pump body, improve the short plate of some single-stage pumps, making some factories and equipment manufacturers more efficient. However, there are still some factors in the vacuum pump unit that make the performance of the vacuum pump unit fail to be brought into full play.

1, condensation is not enough. The compressed gas temperature of the vacuum pump unit is low, and the exhaust temperature is only 10 ~ 15 degrees higher than the inlet temperature. Because of this characteristic, the vacuum pump unit is suitable for pumping and pressing inflammable and explosive gases. Condensate plays an important role in vacuum pump unit. Condensate can condense steam sufficiently. However, once the cooling water supply is insufficient, the condenser will produce a heating phenomenon, the sound of the air flow becomes larger, the vacuum degree drops rapidly, and even the steam will return to the exhaust pipe. The partial pressure of water vapor in the discharge pressure of vacuum pump unit must be higher than the corresponding full vapor pressure, so the condensate temperature should be lower than the full temperature under this pressure to ensure the normal operation of pump body.

2, seal state. The sealing device of vacuum pump unit is one of the important components to maintain the normal operation of vacuum pump unit. Because of the particularity of dry gas medium, the sealing of vacuum pump unit is required to ensure that the dry gas can neither leak out nor leak inside.

3, environmental factors. The influence of the environment mainly refers to the pollution of the system caused by the exhausted gas. During the disposal of the molten steel, a lot of gas will be discharged. At the same time, some small particles such as oxide powders will be sucked into the vacuum pump unit. These small particles will accumulate and adhere to the pump body, which reduces the flow conductivity of the exhaust pipe and prolongs the exhaust time. The pumping function of the vacuum pump unit has been reduced.roots-vacuum-pump-model

Liquid ring vacuum pump working principle

Water ring vacuum pump is a kind of coarse vacuum pump. The limit vacuum it can obtain is 2000-4000Pa, and the series air ejector can reach 270-670Pa. Water ring pump can also be used as compressor, called water ring compressor, is a low-pressure compressor, its pressure range is 1 ~ 2 *105Pa meter pressure.

Water ring pumps were initially used as self-suction pumps, and then gradually used in petroleum, chemical, machinery, mining, light industry, medicine and food and many other industrial sectors. In many industrial processes, 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. Due to the rapid development of vacuum application technology, water ring pump has been paid much attention in obtaining coarse vacuum. Because the gas compression in the water ring pump is isothermal, it can extract flammable and explosive gases, in addition, it can also extract dust, water-bearing gases, so the application of water ring pump is increasing.

Rotary Vacuum Pump

Proper amount of water is used as working fluid in the pump body. When the impeller rotates clockwise in the diagram, the water is thrown around by the impeller. Due to the centrifugal force, the water forms a closed ring which is approximately equal to the thickness of the pump cavity. The inner surface of the lower part of the water ring is just tangent to the hub of the impeller, and the upper inner surface of the water ring is just in contact with the tip of the blade (in fact, the blade has a certain depth of insertion in the water ring). A one-month conodont space is formed between the hub and the water ring of the impeller, and this space is divided into several small cavities equal to the number of blades. If the lower part of the impeller is taken as the starting point, the volume of the small cavity increases from small to large at 180 degrees before the impeller rotates, and is connected with the suction port on the end face. At this time, the gas is sucked in, and the small cavity is isolated from the suction port at the end of the suction. When connected, the gas is discharged out of the pump.