Introduction and advantages of rotary vane vacuum pump unit

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The rotary vane vacuum pump unit is a pump-based pump and a rotary vane pump is connected in series with a pre-stage pump. The rotary vane vacuum pump unit selects the rotary vane pump as the front pump, so it overcomes the shortcomings of the low pumping rate under a certain pressure when the rotary vane pump is used, and at the same time retains the Roots pump can work quickly and has the advantages of relatively large pumping rate. Because the rotary vane vacuum pump unit has compact structure, large pumping speed and small occupied area, it can replace many mechanical vacuum pumps. Therefore, the rotary vane vacuum pump unit is widely used in vacuum smelting, power capacitor, transformer vacuum heat treatment, vacuum coating equipment, pre-pumping, electric vacuum semiconductor and other industries to remove airtight

rotary vaneVacuum pump unitIs the main pump pump, with rotary vane pump as the front pump in series. rotary vaneVacuum pump unitThe selection of the rotary vane pump as a pre-pump, so it overcomes the use of rotary vane pump under a certain pressure under low pumping rate of the shortcomings, but also retains the roots pump can work quickly, there is a relatively large pumping rate and other advantages. Because the rotary vaneVacuum pump unitThe structure is compact, the pumping speed is large, and the area is small, so it can replace multiple mechanical vacuum pumps, so the rotary vaneVacuum pump unitWidely used in vacuum smelting, power capacitors, transformer vacuum heat treatment, vacuum coating equipment pre-pumping, electric vacuum semiconductor and other industries in the closed container to remove oxygen is not high, non-explosive, non-corrosive to metal, and pump oil will not react chemically and will not contain particles of dust gas.

The vertical oil-free reciprocating pump unit is mainly composed of ZJ pump, and the WLW type oil-free pump is connected in series with the front stage pump.Vacuum pump unitThe oil-free self-lubricating system is adopted, so that a clean vacuum can be obtained, so that after the exhaust gas collection device is installed, the gas that cannot be solidified and compressed in the high vacuum system can be collected, and at the same time, a large amount of water generated by the water ring unit is avoided. The discharge of waste water causes environmental pollution.

rotary vaneVacuum pump unitIt is a variable capacity machine that uses the rotary motion of the rotor and the rotary vane that can slide in the rotor slot to obtain vacuum.Vacuum pump unit. When the working fluid is used to lubricate and fill the pump cavity dead gap, separating the exhaust valve and the atmosphere, it is commonly referred to as the oil-sealed rotary vane vacuum pump. When there is no working fluid, it is dry rotary vaneVacuum pump unit.

In the oil-sealed rotary vane vacuum pump, it is customary in China to call the belt-driven rotary vane vacuum pump, while the pump is directly connected to the motor or connected by a coupling is called a direct-coupled rotary vane vacuum pump. In each pump, there are single-stage and double-stage points. In the single-stage pump, due to the selection of different structural forms and parameters, the limit pressure and use of the pump are also different.

Their common characteristics are simple structure, easy to use, can be started from atmospheric pressure, can be directly discharged into the atmosphere, eccentric mass is small, easy to maintain, the limit pressure of the two-stage pump is 6 × 10-2 ~ l × 10-2Pa, a single-stage pump can reach about 4Pa, another single-stage pump is about 50~200Pa.

The advantage of the rotary vane vacuum pump is that the vacuum degree of the new pump is relatively high. Gas compression in rotary vane vacuum pumps is isothermal. Since there is no exhaust valve and friction surface, it can remove dust gas, condensable gas and gas-water mixture. With these outstanding features, despite its low efficiency, it is still widely used. Simple structure, manufacturing precision demand is not high, simple processing, compact structure.


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