NuoXuTech

The piston vacuum pump is a type of vacuum pump that operates by using a piston mechanism to change the volume of the suction chamber, which results in gas extraction. While the gas extraction principle of the piston vacuum pump is similar to that of the rotary vane pump, the two pumps differ in structure. This article will explain the working principle, types, and structural details of piston vacuum pumps, as well as their practical applications in various industries. 1. Overview of Piston Vacuum Pumps Piston vacuum pumps are categorized into two types: single-stage and two-stage pumps. They are available in both vertical and horizontal configurations. The ultimate pressure of a single-stage pump ranges from 0.4 to 1.3 Pa, while the ultimate pressure of a two-stage pump ranges from 6 × 10⁻² to 10⁻¹ Pa. Generally, large pumps with a pumping speed exceeding 150 L/s are designed as single-stage pumps. These pumps can be used independently or as a fore pump for oth...

Rotary vane vacuum pumps are essential components in numerous industrial and scientific applications, providing reliable and efficient vacuum creation. These pumps consist of a pump body, rotor, vanes, end covers, springs, and other components. This article explains the working principle and highlights the distinctive features of rotary vane vacuum pumps. 1. Working Principle of Rotary Vane Vacuum Pumps The rotary vane vacuum pump operates by using a rotor installed eccentrically within the pump chamber. The outer circumference of the rotor is tangent to the inner surface of the pump chamber, with a small clearance between them. Two vanes, equipped with springs, are placed within slots in the rotor. As the rotor rotates, centrifugal force and spring tension keep the vane tips in contact with the inner wall of the pump chamber. This rotation causes the vanes to slide along the chamber wall, creating an enclosed, crescent-shaped space that is divided into three parts: A, B,...