What Is a Liquid Ring Pump?

Liquid ring vacuum pump is a rough pump using liquid as working medium. Among them, water ring vacuum pump is called water ring vacuum pump. Others can also use oil, sulfuric acid and acetic acid as working medium. Industrial water ring vacuum pumps are mostly used. ^[1]

Liquid ring vacuum pump

Liquid ring vacuum pump is a rough pump using liquid as working medium. Among them, water ring vacuum pump is called water ring vacuum pump. Others can also use oil, sulfuric acid and acetic acid as working medium. Industrial water ring vacuum pumps are mostly used. ^[1]

Liquid ring vacuum pumps are divided into single-stage and double-stage, and the difference between single-acting and double-acting. Single-stage and double-stage vacuum pumps refer to the number of stages of its impeller; single / double-action refers to the form of its impeller / housing. The impeller of a single-acting impeller vacuum pump undergoes one suction / exhaust after one revolution of the gas; the double-acting vacuum pump undergoes one revolution of its impeller during one revolution Gas inhalation and exhaustion twice.

When selecting a vacuum pump, you need to pay attention to the following:

1.The working pressure of the vacuum pump should meet the limit vacuum and working pressure of the vacuum equipment.

Wear of liquid ring vacuum pump bearings

The wear of liquid ring vacuum pump transmission parts is a common problem, including bearing positions, bearing housings, bearing chambers, keyways and threads. Traditional methods are mainly repair welding and brush plating spraying, but both have certain disadvantages: repair The thermal stress generated by the high temperature of welding cannot be completely eliminated, which can easily cause material damage and cause parts to bend or break. Brush plating is limited by the thickness of the coating and is easy to peel off. The above two methods use metal to repair the metal and cannot change " The "hard-to-hard" cooperation relationship will still cause wear and tear under the combined effect of various forces. Contemporary western countries use polymer composite repair methods to address the above problems, and the more commonly used are the US Micahua technology system, which has comprehensive properties such as strong adhesion and excellent compressive strength. The application of polymer materials for repair can be dismantled and machined. There is no effect of welding thermal stress, and the repair thickness is not limited. At the same time, the metal material does not have the concession, which can absorb the shock and vibration of the equipment, avoid the possibility of re-wear, and greatly extend the service life of equipment components. Enterprises save a lot of downtime and create great economic value.

Corrosion erosion repair of liquid ring vacuum pump

The form of vacuum pump corrosion can be divided into two categories: general (uniform) corrosion and local corrosion. The former occurs more uniformly on the entire surface of the vacuum pump, and the latter occurs only locally, such as pore corrosion, crevice corrosion, intergranular corrosion, and stress corrosion. . The use of polymer composite materials to protect the surface of the vacuum pump with organic coatings is one of the effective anti-corrosion measures. It has good chemical resistance, excellent mechanical properties and adhesive properties, and is similar to traditional pressure vessel welding repair It has the characteristics of simple construction, low cost, safety performance and good repair effect.

Crack repair of liquid ring vacuum pump

Due to casting, machining defects, internal stress and overload operation, the vacuum pump often causes parts to crack or break. The conventional repair method is welding, but some parts are made of cast iron, aluminum alloy, titanium alloy, which is difficult to do welding treatment. There are also some dangerous places that are prone to explosion, and it is more difficult to use welding repair methods. Meijiahua technology is a kind of "cold welding" technology, which can avoid thermal stress deformation. At the same time, the material has good adhesion and comprehensive performance such as compression resistance and corrosion resistance. Effectively guarantee production under the input of cost. Safe, convenient and reliable.