How Does The Piston Vacuum Pump Work?
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...