Corrosion-resistant and wear-resistant chemical centrifugal pump

Abstract

A corrosion-resistant and wear-resistant chemical centrifugal pump is provided, including a pump body, an impeller nut, an impeller, a pump cover, a mechanical sealing set, a sealing box, a shaft sleeve, a bracket, a bearing gland, a bearing, a pump shaft and a suspension support; the pump body is connected to the suspension bracket by a bolt and a base; the mechanical sealing set includes a moving mechanical sealing ring and a stationary mechanical sealing ring, wherein the moving mechanical sealing ring is provided on the impeller; the pump cover, together with the sealing box and the mechanical sealing set, is provided on a pump shaft, wherein the pump cover is connected to the sealing box by a bolt; the stationary mechanical sealing ring, a stationary ring seat and a spring are arranged between the pump cover and the sealing box; and the shaft and the bracket are detachably connected.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to PCT Application No. PCT / CN2015 / 087499, having a filing date of Aug. 19, 2015, based off of Chinese Application No. 2014107482486, having a filing date of Dec. 10, 2014 the entire contents of which are hereby incorporated by reference.FIELD OF TECHNOLOGY[0002]The following relates to a pump and in particular to a corrosion-resistant and wear-resistant chemical centrifugal pump.BACKGROUND[0003]Chemical centrifugal pumps are widely applied in industries such as petroleum, chemical industry, metallurgy and pharmacy. Currently, the common chemical centrifugal pumps in the market can only transport media having physical properties similar to those of water (without impurities and particles). In addition, after a period of time of use, wear from material on pump vanes leads to internal leakage between the pump vanes and the pump body, and thus leads to an increase in noise and an obvious power loss. When repai...

AI Technical Summary

Benefits of technology

The present invention provides a pump with corrosion-resistant and wear-resistant properties that can handle a wide range of media containing solid particles with a certain size and hardness. It can be used in applications involving acid, alkali, salt and other substances without causing obstruction. The pump is easy to install and has a long service life.

Problems solved by technology

Currently, the common chemical centrifugal pumps in the market can only transport media having physical properties similar to those of water (without impurities and particles).

In addition, after a period of time of use, wear from material on pump vanes leads to internal leakage between the pump vanes and the pump body, and thus leads to an increase in noise and an obvious power loss.

Unreasonable sealing structures can easily lead to obstruction due to a high content of solid of the medium and also leakage due to wear and corrosion.

It is undesirable to operate the pump for a long period of time at a flow which is lower than 30% of the designed flow.

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