2X rotary vane pump two-stage rotary vane vacuum pump working principle

2X rotary vane pump double-stage rotary vane vacuum pump working principle

2X rotary vane pump The two-stage rotary vane vacuum pump is one of the most basic vacuum acquisition devices in vacuum technology. Rotary vane pump

For small and medium pumps. Rotary vane pumps are available in single and double stages. The so-called two-stage is to connect two single-stage pumps in series.

stand up. Generally, it is made into two stages to obtain a higher degree of vacuum.

2X rotary vane pump Double-stage rotary vane vacuum pump working principle: rotary vane pump mainly consists of pump body, rotor, rotary vane, end cap, bullet

Spring and other components. A rotor is eccentrically mounted in the cavity of the rotary vane pump, and the outer circumference of the rotor is tangent to the inner surface of the pump chamber (both have

With a small gap), two rotor blades with springs are mounted in the rotor slot. When rotating, it is rotated by the centrifugal force and the tension of the spring.

The top end of the sheet is kept in contact with the inner wall of the pump chamber, and the rotation of the rotor drives the rotary vane to slide along the inner wall of the pump chamber. Two rotors put the rotor,

The crescent-shaped space enclosed by the pump chamber and the two end caps is divided into three parts A, B, and C. When the rotor rotates in the direction of the arrow,

The volume of the space A communicating with the suction port is gradually increased and is in the process of inhalation. And the space C that communicates with the exhaust port

The volume is gradually reduced and is in the process of exhaust. The volume of the centered space B is also gradually decreasing, and is under pressure.

Shrink the process. Since the volume of space A is gradually increased (ie, expanded), the gas pressure is lowered, and the external gas at the inlet of the pump

The pressure is stronger than the pressure in the space A, so the gas is sucked in. When space A is isolated from the suction port, it is transferred to the position of space B.

The gas begins to be compressed, the volume gradually shrinks, and finally communicates with the exhaust port. When the compressed gas exceeds the exhaust pressure,

The exhaust valve is pushed away by the compressed gas, and the gas is discharged to the atmosphere through the oil layer in the oil tank. Continuous operation by the pump to achieve continuous

The purpose of pumping. If the exhausted gas passes through the air passage and is transferred to another stage (low vacuum level), it is pumped away by the low vacuum stage, and then

The low vacuum stage is compressed and discharged to the atmosphere, which constitutes a two-stage pump. At this time, the total compression ratio is borne by two levels, thus improving

Ultimate vacuum. 2X rotary vane pump double rotary vane vacuum pump