Sand pump

Abstract

The invention provides a sand pump, comprising a sand pump body housing and a rear cover plate. The rear end of the sand pump body housing is provided with at least two front installation bosses and at least a front installation groove. The front end of the rear cover plate is provided with at least two rear installation grooves and at least a rear installation boss, or the rear end of the sand pump body housing is provided with at least a front installation boss and at least two installation grooves, and the front end of the rear cover plate is provided with at least a rear installation grooves and at least two rear installation boss. The front installation boss is installed in the rear installation groove in a cooperative manner. The rear installation boss is installed in the front installation groove in a cooperative manner. The sand pump body housing and the rear cover plate are respectively provided with the installation bosses and the installation grooves, and the installation bosses are installed in the installation grooves in a cooperative manner. Through the simple structure, good sealing effect is achieved, and practical production and processing are convenient.

Description

technical field [0001] The invention belongs to the technical field of sand pumps. Background technique [0002] The sand suction pump is composed of a pump body, impeller, guard plate, pump cover, bracket and bearing components, etc. The rear cover plate is required to cover the sand suction pump body on the side of the sand suction pump bearing. [0003] Due to the following two reasons, the existing back cover is easy to wear and needs to be replaced as a whole, which not only causes waste, but also seriously affects production due to frequent shutdowns and replacements. First, due to the complex structure of the back cover, for the convenience of manufacturing and processing, the existing back cover is made of gray iron as a whole. The characteristics of gray iron determine that the back cover has poor wear resistance. Can not resist the impact of mortar for a long time; Second, the dynamic water seal of the existing rear cover is realized by the direct contact between ...

AI Technical Summary

Problems solved by technology

[0003] Due to the following two reasons, the existing back cover is easy to wear and needs to be replaced as a whole, which not only causes waste, but also seriously affects production due to frequent shutdown and replacement

First, because the structure of the back cover is relatively complicated, for the convenience of manufacturing and processing, the existing back cover is made of gray iron as a whole. The characteristics of gray iron determine that the back cover has poor wear resistance. Can not resist the impact of mortar for a long time; Second, the dynamic water seal of the existing rear cover is realized by the direct contact between the rear cover and the rotating rubber sealing ring. Therefore, the friction between the rear cover and the sealing ring It is also prone to wear and damage the seal

In addition, the existing back cover adopts a complex water-tight chamber structure, which is not only difficult to process, but also inconvenient to install and maintain

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