Vacuum pump

Abstract

The invention relates to a vacuum pump. The vacuum pump comprises a pump body, a pump cover detachably connected with the front end of the pump body, an impeller eccentrically mounted in the pump body, a pump shaft, and a motor integrally arranged with the pump shaft; an exhaust cavity, an intake cavity, a cavitation protection water supply cavity and a pump water supply cavity are formed in the side end surface of the pump cover; a cavitation protection water supply port communicating with the cavitation protection water supply cavity and a pump water supply port communicating with the pump water supply cavity are formed in the side end surface of the pump cover; the pump cover is provided with a water draining port between the cavitation protection water supply cavity and the pump watersupply cavity; the impeller is mounted on the pump shaft through key connection, and the length-diameter ratio is 0.5; a disc, a flexible valve plate and a rigid valve plate cover plate are arranged between the impeller and the pump cover; a connecting part connected with the front end of the motor is integrally arranged on the back end surface of the pump body; and the air sucking quantity of thepump body is 10-50 m3 / h. The vacuum pump has the characteristics of low mating power and high air extracting quantity, and is small in size, high in working efficiency and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of vacuum pumping, in particular to a vacuum pump. Background technique [0002] Water ring pumps were originally used as self-priming pumps, and then gradually used in many industrial sectors such as petroleum, chemical industry, machinery, mining, light industry, medicine and food. In many processes of industrial production, such as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum moisture resurgence and vacuum degassing, etc., water ring pumps are widely used. Due to the rapid development of vacuum application technology, water ring pumps have been paid attention to in obtaining rough vacuum. Because the gas compression in the water ring pump is isothermal, it can pump out flammable and explosive gases, and also can pump out dusty and water-containing gases. Therefore, the application of water ring pumps is increasing day by day. A proper amount...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of unreasonable structural design, difficult installation, large power loss and high operating cost of existing water ring vacuum pumps in high-end hotels, hotels and different washing markets at home and abroad, and obtain a small volume, high work efficiency, Green environmental protection vacuum pump

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