What is the working principle of rotary vane vacuum pumps _

rotary vane vacuum pump ( Rotary vane vacuum pump) Is a mechanical oil seal vacuum pump. The working pressure for the range of 101325-1. 33× 10- 2 ( Pa） Vacuum pump is low. It can be used alone, also can be used as a high vacuum pump or other ultrahigh vacuum pump before use. Widely used in metallurgy, machinery, military industry, electronics, chemical industry, light industry, petroleum, medicine and other production and scientific research departments.

rotary vane vacuum pumps can remove dry gas in the sealed container, and if the gas ballast device installed, you can remove a certain amount of condensable gases. However, it is not suitable for removal of oxygen is exorbitant, corrosive to metal, have chemical reactivity to water pump oil, and gas containing dust particles.

rotary vane vacuum pump is one of the most basic vacuum acquisition equipment of vacuum technology. Rotary vane vacuum pumps are mainly small and medium-sized pump. Rotary vane vacuum pump, which has two kinds of single stage and double stage. So-called two-stage is connects two series of single-stage pump. Usually, it made into two stages to achieve higher vacuum degree.

rotary vane vacuum water pump of the relationship between pumping speed and inlet pressure are as follows: in the inlet pressure for 1333 p.

a, 1。 33 pa and 1. 33× 10- 1 ( Pa） When pumping speed values should not be less than 95% of the nominal pumping speed of pump, 50% and 20%.

rotary vane vacuum pump is mainly composed of pump body, rotor, vane, an end cover and spring. Rotor eccentricity and installed in the cavity of the rotary vane vacuum pump, the inner surface of the outer periphery of the rotor and the pump chamber tangent ( There is little gap between) And the two rotor blade is installed in the rotor slot. When rotating, the top of the rotor blades by centrifugal force and the spring tension to keep contact with the pump chamber wall, and the rotation of the rotor drives the rotating blade sliding along the wall.

two rotor blades will be made by the rotor and the pump cavity and surrounded by two end cover crescent-shaped space is divided into three parts A, B and C, as shown. When the rotor rotates along the direction of the arrow, and suction connected space of A volume increases gradually, and in the suction process. Connect to vent space C volume decreases, and in the exhaust process. Center space, the size of B has decreased gradually and in the compression process. Because of the space of A volume increase gradually, I. e. , inflation) , the gas pressure is reduced, and the external gas pressure at the entrance of water pump is stronger than the pressure in the space of A, thus in gas. When space is A from the suction, namely is separated from the position space B, gas begins to be compressed, volume decreases, finally connect to vent. When compressed gas than exhaust pressure, exhaust valve be pushed away, compressed gas, gas emissions to the atmosphere through the fuel tank of oil.

rotary vane vacuum pump continuous operation to achieve the purpose of continuous pumping. If the discharge gas passage through the air and move to another stage ( Low vacuum level) Away, it is low vacuum stage, and then be low vacuum stage compression side by side in the atmosphere, this constitutes the bipolar pump. Then the total burden by two stage compression ratio, thus increasing the ultimate vacuum.

J&T INDUSTRY CO.,LTD. is devoted to satisfy our customers with a wide array of the finest using experience.
J&T INDUSTRY CO.,LTD. will provide branded products and services of superior quality and value that improve the lives of the world’s consumers.
Establish a unique brand as JT that cuts through the clutter, and you'll get you the capital you need to get moving.
J&T INDUSTRY CO.,LTD.'s water pump are sturdy, easy to operate, friendly work machines that deliver high-quality pool cover drain pump for winter cover pump purposes.