What is bellows? The bellows in vacuum parts are tubular elastic sensing elements connected by foldable wrinkles in the direction of folding and stretching. Bellows are widely used in instruments and meters. They are mainly used as measuring elements of pressure measuring instruments to convert p...

Roots vacuum pump is equipped with two blade rotors which rotate in opposite directions synchronously. There are small clearances between the rotors and between the rotors and the inner wall of the pump shell, but they do not contact each other. Roots vacuum pump is characterized by fast start-up...

A complete vacuum system consists of a wide range of vacuum application equipment, vacuum system column mainly describes the design of the main parameters in the vacuum system, the calculation of the pumping time, the influence of the exhaust on the vacuum system, the selection of vacuum pumping ...

Vacuum pump is a device that produces, improves and maintains vacuum in a closed space by various means. Vacuum pump can be defined as: mechanical, physical, chemical or physicochemical methods to be pumped by the container to obtain a vacuum device or equipment. With the development of vacuum ap...

Rotary vane vacuum pump is an oil sealed mechanical vacuum pump. It belongs to the low vacuum pump. It can be used alone or as a front pump for other high vacuum pumps or ultra high vacuum pumps. It has been widely used in metallurgy, machinery, military industry, electronics, chemical industry, ...

Water ring pump unit can be widely used in vacuum distillation, vacuum evaporation, dehydration and crystallization in chemical industry; freeze-drying in food industry; vacuum drying in pharmaceutical industry; polyester chips in light textile industry; vacuum system in high altitude simulation ...

The liquid ring vacuum pump is mainly composed of pump body, impeller, end face disc and pump body end cover, as shown in the following figure. liquid ring vacuum pump of basic structure diagram Pump body: The machining precision of the inner cavity is not high, but the casting blank is required...

Turbomolecular pump is a kind of vacuum pump which uses high-speed rotating impeller to transfer momentum to gas molecule and make gas produce directional flow and exhaust. Turbomolecular pump is mainly composed of pump body, rotor with blades (i. E. moving impeller), static impeller and drive sy...

RH process is an important out-of-furnace refining method, which has the functions of degassing, decarbonization, temperature compensation, uniform molten steel temperature composition, removing inclusions in steel and so on. Because of its good refining effect and short processing period, it has...

EVP vacuum pump is a two-stage structure. Its working performance consists of two parts: high-pressure stage and low-pressure stage. Its suction port is connected with vacuum container or vacuum equipment. During operation, the gas in the container will be sucked and discharged. When the equipmen...