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Axial force self-balancing device and method for a single-stage single-suction centrifugal pump

A technology of centrifugal pump and axial force, which is applied to parts, pumps, and pump elements of pumping devices used for elastic fluids. It can solve problems such as low hydraulic efficiency, high cost, and complex structure, and achieve extended service life. Ease of processing and simple structure

Active Publication Date: 2022-03-22
CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The embodiment of the present invention provides an axial force self-balancing device and method for a single-stage single-suction centrifugal pump, which is used to solve the complex structure, high cost and hydraulic problems of the centrifugal pump axial force self-balancing design method and device in the prior art. The problem of inefficiency

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  • Axial force self-balancing device and method for a single-stage single-suction centrifugal pump
  • Axial force self-balancing device and method for a single-stage single-suction centrifugal pump
  • Axial force self-balancing device and method for a single-stage single-suction centrifugal pump

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Embodiment Construction

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] Combine below Figure 1-Figure 10 The axial force self-balancing device and method of the single-stage single-suction centrifugal pump according to the embodiment of the present invention are described.

[0045] figure 1A schematic diagram of a partial cross-sectional structure of an axial force self-balancing device for a single-sta...

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Abstract

The embodiment of the present invention provides an axial force self-balancing device and method for a single-stage single-suction centrifugal pump, which relates to the field of water pump equipment. The axial force self-balancing device includes: a pump body, an impeller arranged in the pump body, an The pump back cover on one side, the shaft sleeve set in the shaft hole of the pump back cover and the pump shaft connected to the impeller after passing through the shaft sleeve at one end; the front cavity is enclosed between the front cover plate of the impeller and the pump body, There is a first gap between the front sealing ring of the impeller and the pump body, the front cavity communicates with the inlet of the impeller through the first gap, a balance chamber is enclosed between the back cover of the impeller and the back cover of the pump, and the rear sealing ring of the impeller is respectively There is a second gap between the pump body and the pump back cover, and a plurality of balance holes are arranged at intervals on the back cover. The balance holes extend to the shaft sleeve and form a third gap with the shaft sleeve. The impeller realizes axial force self-balancing through self-adjustment, without adding devices such as back blades, balance discs or balance drums. The structure is simple, easy to process, and effectively reduces costs.

Description

technical field [0001] The invention relates to the field of water pump equipment, in particular to an axial force self-balancing device and method for a single-stage single-suction centrifugal pump. Background technique [0002] Centrifugal pumps are one of the most widely used general-purpose equipment in production and life, among which single-stage single-suction centrifugal pumps are the most common. Due to the pressure difference between the front shroud and the rear shroud, axial pressure will be generated, and the force will increase as the blade twist increases. Therefore, the pump shaft is usually subjected to various stresses caused by multiple forces and moments. If not properly balanced, these forces will act on the shaft causing the shaft to deflect and be transmitted to the bearings causing overloading. In order to avoid the failure of pump shafts, bearings and other components, it is of great significance to design a self-balancing method for the axial forc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/22F04D29/08F04D29/66
CPCF04D29/2266F04D29/086F04D29/669
Inventor 肖若富靳发业姚志峰杨魏陶然
Owner CHINA AGRI UNIV
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