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Peripheral pump with adjustable impeller clearance

A technology of impeller clearance and vortex pump, which is applied to components, pumps, and pump control of elastic fluid pumping devices. Excellent sealing effect, good sealing effect and reliable operation

Pending Publication Date: 2019-05-21
浙江青霄科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) Usually, after the vortex pump is assembled, the gap between the impeller and the pump body and its rear end cover is fixed, and the gap cannot be adjusted, resulting in the performance of the vortex pump cannot be adjusted;
[0005] 2) When the vortex pump is operated for a long time, the wear between the pump body and the rear end cover and the impeller increases the gap, resulting in a decrease in the performance of the vortex pump;
However, the vortex pump cannot adjust the gap more realistically, and after a long time of use, the compression spring is prone to failure, and cannot achieve the function of adjusting the gap

Method used

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  • Peripheral pump with adjustable impeller clearance
  • Peripheral pump with adjustable impeller clearance
  • Peripheral pump with adjustable impeller clearance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 and 2 As shown, a vortex pump with adjustable impeller clearance includes a pump body 1, a pump cover 2, a motor 3, a rotating shaft 4 and an impeller 9, the pump body 1 and the pump cover 2 form a pump chamber for housing the impeller 9, and the pump The body 1 and the pump cover 2 are fixedly connected by bolts 10, the pump body 1 is provided with an annular groove 5, and the annular groove 5 is embedded with a sealing ring 6, and the sealing ring 6 is embedded between the pump body 1 and the pump cover 2. A mechanical seal 8 is provided between the cover 2 and the rotating shaft 4, which has a good sealing effect.

[0031] The outer wall of the sealing ring 6 is an arc-shaped elastic sealing surface 6 a protruding in the middle, and the elastic sealing surface 6 a abuts against the outer wall of the pump cover 2 .

[0032] When adjusting the gap, adjust the tightness of the pump body 1 and the pump cover 2 by turning the bolt 10, thereby adjusting ...

Embodiment 2

[0035] The structure and principle of this embodiment and embodiment one are roughly the same, the difference is: as Figure 4 As shown, the elastic sealing surface 6a of the sealing ring 6 is wavy and the ratio of the wave height h of the elastic sealing surface 6a to the outer diameter D of the sealing ring 6 is 1:30-1:50. The inner side wall of the annular groove 5 is provided with a wave-shaped sealing groove and the elastic sealing surface 6a is embedded in the sealing groove, and the elastic sealing surface 6a is embedded in the sealing groove to form multiple seals and have a good sealing effect.

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PUM

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Abstract

The invention discloses a peripheral pump with an adjustable impeller clearance and belongs to the technical field of water pumps. The peripheral pump with the adjustable impeller clearance solves theproblem that an existing peripheral pump cannot achieve that the clearance is adjusted according to actual demands. The peripheral pump with the adjustable impeller clearance comprises a pump body, apump cover, a motor, a rotating shaft and an impeller. The pump body and the pump cover form a pump cavity used for containing the impeller. The pump body and the pump cover are fixedly connected through bolts. The pump body is provided with an annular groove. A seal ring is embedded in the annular groove. The seal ring is embedded between the pump body and the pump cover. The peripheral pump with the adjustable impeller clearance has the advantages that the impeller clearance can be manually adjusted, and the service life is long.

Description

technical field [0001] The invention belongs to the technical field of water pumps, and relates to an adjustment mechanism, in particular to a vortex pump with adjustable impeller gaps. Background technique [0002] In general, the axial clearance between the two sides of the impeller of the vortex pump and the pump body and the rear end cover is very strict, and the general clearance is 0.15-0.3mm. The clearance has a great influence on the performance of the pump (flow rate, head, shaft power). When the gap increases, the pump flow and head decrease, and when the gap decreases, the pump flow and head increase; [0003] Vortex pumps often have the following problems in use: [0004] 1) Usually, after the vortex pump is assembled, the gap between the impeller and the pump body and its rear end cover is fixed, and the gap cannot be adjusted, resulting in the performance of the vortex pump cannot be adjusted; [0005] 2) When the vortex pump is operated for a long time, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D13/06F04D29/60F04D29/08F04D15/00
Inventor 卢昌苗王福义
Owner 浙江青霄科技股份有限公司