Vacuum Pre-filter

The vacuum pre-filter is installed at the front end of the vacuum pump inlet. Its primary function is to filter dust and small amounts of liquid from the gas, thereby protecting the vacuum pump rotor and preventing damage caused by the ingress of contaminants. When the vacuum pump starts operating, solid dust particles in the gas are trapped on the surface of the filter media, while small amounts of liquid are filtered, condensed, and settle at the bottom of the filter housing, ultimately being discharged through the liquid drainage pipe; clean gas then flows smoothly into the vacuum pump, effectively preventing wear and corrosion of the pump's moving parts.

Working Principle

This filter operates under negative pressure to achieve filtration: as dust-laden gas flows through the filter material, larger particles naturally settle to the bottom of the container due to inertia and gravity; smaller particles are firmly adsorbed onto the surface of the filter media fibre through Brownian motion and diffusion effects. Through this multi-stage filtration process, the gas entering the vacuum pump remains clean, significantly extending the pump's service life.

Suitable Vacuum Pump Models​

Roots vacuum pumps, reciprocating vacuum pumps, sliding vane vacuum pumps, vane pumps, screw vacuum pumps, and other types of vacuum equipment​

Suitable Industries​

Vacuum packaging, food processing, ceramic vacuum picking, vacuum furnace applications, medical equipment, chemical production, and other special fields​

Structural Features​

Pressure measurement port: G1/4 specification, enabling real-time monitoring of internal filter pressure to ensure operational stability;​

Sealing performance: Utilises a reliable sealing structure to effectively prevent gas leakage and ensure filtration efficiency;​

Connection method: Equipped with T-bolt connections for easy installation and removal, reducing maintenance complexity;​

Inlet/outlet flanges: Sizes are flexibly matched to actual operating conditions and flow rates, and strictly comply with HG/T20592 standard requirements for enhanced compatibility.