The concept, advantages, and rust removal methods of Roots oil pumps

Firstly, the concept and advantages of Roots pump. Roots pump is a rotary volumetric vacuum pump. Its structural form evolved from the Roots blower

According to the different working pressure ranges of Roots pumps, they are divided into low vacuum Roots pumps with direct discharge to the atmosphere; Medium vacuum Roots pump (mechanical booster pump) and high vacuum Roots pump. The most commonly used in China is the medium vacuum Roots pump (hereinafter referred to as Roots pump). Compared with other oil sealed mechanical pumps, Roots pumps have the following characteristics:

They have a larger pumping speed within a wider pressure range

The rotor has good geometric symmetry, resulting in low vibration and smooth operation. There are gaps between the rotors and between the rotor and the shell, which do not require lubrication and have low friction loss, which can reduce driving power and achieve higher speeds

The pump chamber does not require oil sealing and lubrication, which can reduce the pollution of oil vapor on the vacuum system

There is no compression or exhaust valve in the pump chamber. Simple and compact structure, insensitive to dust and water vapor in the extracted gas

The compression ratio is low and the effect on hydrogen gas extraction is poor

The surface of the rotor is a complex curved cylindrical surface, which is difficult to process and inspect

Roots pumps have been developing rapidly in recent years. It has been widely used in industries such as smelting, petrochemicals, electrical engineering, and electronics

Secondly, the two major rust removal methods for Roots pumps

Roots pumps are mechanical equipment with a relatively stable internal structure. During production and processing, some rust prevention work is done well, but in the later stage, the rust prevention effect of the equipment itself will always be reduced due to inadequate maintenance and irregular use methods, resulting in the occurrence of rust in Roots pumps.

. After rusting, the working efficiency of the Roots pump will not only decrease, but the service life of its various components will also be affected. So when rust is found, it is necessary to carry out rust removal work in a timely manner. Currently, there are two rust removal methods for Roots pumps:

1. Manual rust removal

This measure is very cost-effective and safe. Artificial rust removal allows us to use the tools we have at hand to remove rust. Our manual rust removal does not require the use of other chemical products, thus saving some costs. Why is it said to be insurance? Because inside the Roots pump chamber, if chemical rust removers are used to remove rust, the pump chamber will be damaged to some extent

2. Use rust remover for rust removal

This measure is very clean for rust removal, but it can cause damage to the pump chamber.

Therefore, when the Roots pump experiences rust and corrosion, manual rust removal or rust removal agents can be used for treatment. However, before rust removal, it is necessary to consider which rust removal method to choose based on the actual rust situation of the Roots pump itself. Therefore, selecting the appropriate rust removal method can improve its rust removal effect. And after the rust removal of the Roots pump is completed, relevant maintenance work should also be done to consolidate the maintenance and rust removal effect