Rotary vane vacuum pump working principle as shown in Figure for the vortex pump working principle diagram, vane pump mainly by the stator, rotor, rotary vane, fixed cover, spring and other components. Its structure is the use of eccentrically mounted in the stator cavity rotor (the outer circle of the stator and the stator inner surface of the gap between the two is very small) and sliding within the rotor slot by spring tension and centrifugal force on the inner wall of the stator Of the two rotary blades, when the rotor rotates, always sliding along the inner wall of the stator. Rotary vane pump working principle Figure 1 - pump body; 2-rotary vane; 3-rotor; 4-spring; 5- exhaust valve two rotary vane the rotor, Into the A, B, C three parts, when the rotor rotates in the direction shown in the figure, the volume of the space A communicating with the suction port continuously increases and the pressure in the A space continuously decreases. When the pressure in the space A is lower than Being pumped container pressure, according to the principle of gas pressure balance, the pumping of gas is constantly being drawn into the suction chamber A, this time in the process of inhalation. Volume of B cavity space is gradually reduced, the pressure continues to increase, this time in compression. While the volume of the space C communicating with the exhaust port is further reduced and the pressure in the C space is further increased. When the pressure of the gas is greater than the pressure of the exhaust gas, the compressed gas pushes open the exhaust valve and the pumped gas keeps flowing Through the oil reservoir within the tank and discharged to the atmosphere in the continuous operation of the pump, the ongoing suction, compression, exhaust process, so as to achieve the purpose of continuous extraction. Exhaust valve immersed in the oil to prevent atmospheric air flow into the pump, the oil through the pump body clearance, oil hole and exhaust valve into the pump cavity, so that all the movement of the pump cavity surface covered with oil, forming a suction chamber and Exhaust chamber seal, while the oil is also filled with all the harmful space, in order to eliminate their impact on the ultimate vacuum. Two-stage rotary vane vacuum pump consists of two studios. The two chambers are connected in series and in the same direction with constant speed. The first chamber is of low vacuum level, the second chamber is of high vacuum level, and the evacuated gas enters into the second chamber from the air inlet. Gas into the higher pressure, the gas compression chamber â…¡, the rapid increase in pressure, the compressed gas is not only discharged from the high-level exhaust valve, but also through the wall channel, into the â… room, â… room was compressed from the lower row When the pressure of gas into chamber â…¡ is lower, although it is compressed by chamber â…¡, it can not be pushed out by the advanced exhaust valve. All gases enter into chamber â… through the middle wall passageway and continue to be compressed by chamber â… . Low-level exhaust valve discharge, so double-stage rotary vane vacuum pump than single-stage rotary vane vacuum high vacuum. 2-stage rotary vane vacuum pump working principle Figure 1 - advanced exhaust valve; 2-channel; 3 low-level exhaust valve
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