The Principle and working process of Screw Pump

I. Working principle:

The working principle of a dry screw vacuum pump is based on two main components: the main shaft and the screw.

1. Spindle: The spindle of a dry screw vacuum pump usually consists of a pair of intermeshing spiral blades. The spindle is driven by an electric motor and rotates rapidly to create a powerful negative pressure environment.

2. screw: inside the main shaft, there is a pair of screws consisting of rotors rotating synchronously with the main shaft. The pitch and shape of the screws correspond to the blades on the main shaft, which realizes the continuous inhalation and discharge of gas by forming a continuous sealing space.

Second, the working process:

The working process of dry screw vacuum pump can be divided into suction stage and exhaust stage:

1. Suction stage: when the main shaft and screw start to rotate, air is sucked into the gap of the screw. As the screw rotates, the air is gradually pushed to the suction end of the pump. During this process, the gap between the screw and the main shaft is continuously reduced, realizing the compression of the gas.

2. Exhaust stage: When the gas is compressed to a certain degree, it enters the exhaust end and is discharged through the exhaust port. In this stage, the volume change formed by the movement of the main shaft and the screw realizes the discharge of the gas.