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Impeller positioning structure

A positioning structure and impeller technology, applied to parts of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc., can solve problems such as complex processing, and achieve less damage, save processing time, and quantity little effect

Inactive Publication Date: 2014-12-31
SHANGHAI LIANCHENG(GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem of complex processing in the prior art and to propose a novel impeller positioning structure

Method used

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] See figure 2 , shown in the figure is an impeller positioning structure, which is mainly composed of a pump shaft 11, a positioning sleeve 12 and an impeller 13.

[0020] The pump shaft 11 is connected with the motor to provide the impeller 13 with rotation power. At the position where the impeller needs to be set, a shaft section is machined.

[0021] The positioning sleeve 12, a tapered sleeve, is sleeved on the shaft section of the pump shaft and has an interference fit. In order to increase the versatility and fixing reliability of the positioning shaft sleeve 12, a 2-4mm wide slit is machined on it along the axial direction, so that there is a certain free adjustment space during the sleeve setting process.

[0022] The impeller 13 is composed of a hub and vanes. The inner surface of the hub is processed into a mating surface correspon...

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Abstract

The invention relates to an impeller positioning structure. The impeller positioning structure comprises a pump shaft, a positioning shaft sleeve sleeving the pump shaft and an impeller sleeving the positioning shaft sleeve; the match surface of the impeller and the positioning shaft sleeve is of an inclined surface; the inclined surface is upwards inclined along the water inlet direction of the impeller. The impeller positioning structure has the advantages that the structure is simple, the processing steps are simplified, the machining time is saved, the assembly and maintenance are facilitated and the impeller is not easily damaged.

Description

technical field [0001] The invention relates to impeller installation, in particular to an impeller positioning structure. Background technique [0002] See figure 1 , shown in the figure is a common impeller positioning structure, there is a connection key 5 between the impeller 1 and the pump shaft 6, and the pump shaft 6 transmits torque by the connection key 5 to drive the impeller to rotate with it. Since a keyway for connecting the key 5 will be provided on the pump shaft 6, in order to ensure sufficient strength, the diameter of the pump shaft 6 must be thicker than the theoretical value during design, resulting in waste of materials. In addition, the axial fixation of the impeller 1 is stabilized by the snap ring 4, the gland 2, and the screw 3. In this way, not only must the precise snap ring groove be processed on the pump shaft 5, but also the assembly is cumbersome, which increases the workload and causes certain economic losses. . If the impeller 1 is unfortu...

Claims

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Application Information

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IPC IPC(8): F04D29/20
Inventor 张克凤张锡淼
Owner SHANGHAI LIANCHENG(GRP) CO LTD
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