The principle of anti-return device for vacuum pump

Two-stage rotary vane vacuum pump is belonging to an oil-sealed vacuum pump. In order to prevent the vacuum pump oil from returning to the pumped container when the pump is stopped, the built-in stop pump anti-return device is very important.

Preventing pump back oil is usually achieved by a combination of gas path and oil path. Common methods are:

1. Set the pump stop anti-return device on the intake passage
2. There is a pump stop control anti-return device on the oil road.
3, the above two combinations

Two-stage rotary vane vacuum pump
During the operation of the 2XZ series two-stage rotary vane pump, the control piston is kept sealed against the spring under the action of oil pressure. The valve disc of the anti-backup valve is kept in a lower position due to its own weight (valve open). After the pump is stopped, the oil pressure drops and the spring will control the piston to the top. This creates a path between the fuel tank and the piston of the anti-backup valve.

2XZ series two-stage rotary vane pump
tags: Rotary vane vacuum pump, Two stage rotary vane vacuum pump
Edited by Catherine Qin / EVP Vacuum Solution

Contact us

If possible, kindly suggest please your working industry/process, working pressure, working medium, etc. Given detailed request helps to gain better-matched customized solution. Thanks for your patience.

your request will be responsed within 3 hours, kindly pay attention to your email please.

News

vacuum system in hydrocarbon industry of application

Posted on Thu, 14 Oct 2021 08:54:33 +0000

roots vacuum pump of vacuum water diversion steps

Posted on Sat, 09 Oct 2021 08:10:26 +0000

Roots screw dry vacuum unit in practical application of performance

Posted on Fri, 08 Oct 2021 02:57:09 +0000

Vacuum Pump System for Vacuum Distillation Purification Equipment

Posted on Thu, 07 Oct 2021 02:57:03 +0000

What conditions is the vacuum pump used?

Posted on Wed, 06 Oct 2021 02:54:49 +0000

Under what circumstances do I need to install additional devices for the vacuum pump?

Posted on Tue, 05 Oct 2021 02:14:15 +0000