Corrosion resistant water ring vacuum pump

Abstract

The invention discloses an improved corrosion resistant water ring vacuum pump which comprises components and parts such as a bearing body, a side cover, a distributor, an impeller, a shaft, a pump body, a shaft sealing part, a gas-water separator and a gas suction case or a gas suction pipe and so on which are made from cast iron, cast steel or carbon steel. The invention is characterized in that: a nonmetal material underlayer is coated on a wall surface through which impeller fluid flows; a corrosion resistant inlaid piece is embedded in the exhaust hole part of a distributor matrix and then a nonmetal material underlayer is coated on a wall surface through which fluid flows. The improved corrosion resistant water ring vacuum pump has the characteristics of low cost, long service life,relatively simple manufacturing process, corrosion-resistant, cavitation-resistant and wearable excess flow parts, economical repeated maintenance, etc.; moreover, the vacuum pump is suitable to pumpcorrosive gas which does not contain solid matter in industries such as chemical industry, metallurgy, environmental protection, paper making, fertilizer and pharmacy and so on.

Description

technical field [0001] The invention relates to an improved corrosion-resistant water ring vacuum pump, in particular to a water ring vacuum pump in which corrosion-resistant materials are arranged on the surface or part of parts through which fluid flows. Suitable for compression, filtration, concentration, adsorption, cooling, reaction and other process devices in chemical industry, metallurgy, environmental protection, pharmaceutical, papermaking, chemical fertilizer and other industries. Background technique [0002] At present, the water ring vacuum pump widely used in industry has adopted various schemes in order to improve its corrosion resistance. Among them, the common one is to line the metal shell with ceramics, such as the "acid-resistant ceramic water ring vacuum pump" disclosed in Chinese patent 94229021.6; there is a layer of glass fiber reinforced plastic as the lining in the metal shell, such as Chinese Patent No. 200420090107.1 discloses the "plastic corro...

AI Technical Summary

Problems solved by technology

For example, the ceramic pump has a long service life, but it is not resistant to hydrofluoric acid, cannot be repaired, and the cost is high; the fiberglass pump has good acid and alkali resistance, and the use cost is low, but it cannot be repaired, and a special mold is required; the pump is painted with corrosion-resistant repair agent No special mold is needed, it can be repaired, but the service life is average; the stainless steel pump has a long service life, but it is not resistant to hydrofluoric acid, and the cost is very high

Images