Failure and Maintenance of Liquid Ring Vacuum Pump

Liquid ring vacuum pump is a rough pump using liquid as working medium. Among them, water ring vacuum pump is used as working medium. Others can also use oil, sulfuric acid and acetic acid as working medium. Water Ring Vacuum Pump is widely used in industry. 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 their impellers; single / double-action vacuum refers to the form of their impellers / housings. The impellers of single-acting impeller vacuum pumps undergo one suction / exhaust after one revolution of the gas; Gas inhalation and exhaustion twice. Today Liquid Ring Vacuum Pump Manufacturer introduces the failure and maintenance of liquid ring vacuum pump.

1.Bearing wear

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 high temperature 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, and both of the above 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 for these problems. Application of polymer materials for repair, without disassembly and machining. There is no effect of welding thermal stress, and the repair thickness is not limited. At the same time, the metal material of the product 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.

2. Corrosion erosion repair

The form of Liquid Ring 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, Stress corrosion, etc. 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.

Liquid Ring Vacuum Pump

3. Crack crack repair

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 cost input. Safe, convenient and reliable.

The above is the failure and maintenance of the liquid ring vacuum pump, I hope to help everyone.