Roots vacuum pump is a commonly used vacuum pumping equipment, the following is a detailed introduction to roots vacuum pump:

1. Working principle

The working principle of roots vacuum pump mainly relies on a pair of leaf-shaped rotors inside it. The two rotors rotate synchronously in opposite directions within the pump housing, and there is a small gap between them and between them and the inner wall of the pump housing without direct contact. As the rotors rotate, they continuously squeeze and expel gases, resulting in a pumping effect. Specifically, when one rotor draws gas through the intake, the other rotor expels it. In this process, the pressure of the gas will gradually decrease, and finally the gas will be extracted and discharged.

2. Structural characteristics

The structure of roots vacuum pumps is relatively simple and compact, mainly composed of the following parts:

Pump housing: used to hold the rotor and form a space for gas compression.

Rotor: Usually sole-shaped or similar, synchronized rotation is achieved by gear or timing belt transmission.

seal: ensures that the gap between the rotor and the pump casing does not leak air.

cooling device: used to dissipate heat generated by gas compression.

In addition, roots vacuum pumps also have a variety of structural forms, such as vertical, horizontal and vertical shaft types, to adapt to different use needs.