Liquid feeding pump used for seawater desalination

Abstract

The invention discloses a liquid feeding pump used for seawater desalination. The pump comprises a pump body, a liquid inlet, a liquid outlet, a pump tire, a shaft and an impeller, the impeller is an integrated body composed of an impeller body connected with the shaft and 5-10 uniformly-distributed flexible blades arranged in a radial manner, the root of each of the flexible blades is connected with the impeller body, the top of each of the flexible blades has a spherical end, the pump tire is positioned in the pump body, the material of the pump tire is stainless steel, the impeller is positioned in the cavity of the pump tire, the liquid inlet and the liquid outlet are positioned over the pump body, the pump tire has an annular structure, through holes respectively communicated with the liquid inlet and the liquid outlet are positioned over the pump tire, and the pump tire is positioned between the liquid inlet and the liquid outlet and has a thickened segment for realizing the compressive deformation of the heads of the flexible blades of the impeller. The above structure can be adopted by the liquid feeding pump used for seawater desalination, so the liquid feeding pump used for seawater desalination has the advantages of reduced making cost, improved production efficiency and convenient maintenance and assembling.

Description

technical field [0001] The invention relates to a positive displacement pump, in particular to a liquid filling pump which can be used for seawater desalination. Background technique [0002] In order to meet the needs of different conditions, there are many types of pumps. Widely used volumetric pumps include: gear pumps, plunger pumps, vane pumps, etc.; non-volume pumps include: centrifugal pumps, axial flow pumps, etc. At present, the liquid filling pump for heavy construction machinery includes a pump body, a pump cover, an external gear, an internal gear and a skeleton seal ring, and the internal gear meshes with the external gear. Such a structure requires high precision for the pump body, external gear, and internal gear. The precision of the direction, top circle and external teeth is quite high, and the roughness is small. It is easy to appear that the parts are processed out of tolerance. Another easy situation is that it is stuck after assembly, and the inner an...

AI Technical Summary

Problems solved by technology

At present, the liquid filling pump for heavy construction machinery includes a pump body, a pump cover, an external gear, an internal gear and a skeleton seal ring, and the internal gear meshes with the external gear. Such a structure requires high precision for the pump body, external gear, and internal gear. The precision of the direction, top circle and external teeth is quite high, and the roughness is small. It is easy to appear that the parts are processed out of tolerance.

Another easy situation is that it is stuck after assembly, and the inner and outer gears cannot rotate.

High product scrap rate and high manufacturing cost

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