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Sewage pump with automatic axial thrust balancing function

A technology of automatic balance and axial force, which is applied in the direction of components, pumps, pump components, etc. of pumping devices used for elastic fluids, and can solve the problems of large power consumption of motors and great influence on pump efficiency

Inactive Publication Date: 2014-03-12
SHANGHAI RAYBON MACHINERY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can balance the axial force, they consume a lot of extra power for the motor and have a great impact on the efficiency of the pump.

Method used

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  • Sewage pump with automatic axial thrust balancing function
  • Sewage pump with automatic axial thrust balancing function
  • Sewage pump with automatic axial thrust balancing function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as Figure 1-Figure 5 As shown, a sewage pump with the function of automatically balancing the axial force includes a pump body 2 and an impeller 1. The impeller 1 is provided with a hub 11, and the hub 11 is provided with a water tank 111. The pump The body 2 is provided with a connection hole 22 and a water outlet hole 21 , the water outlet hole 21 communicates with the connection hole 22 , and the water tank 111 is sequentially connected with the connection hole 22 and the water outlet hole 21 . The pump body 2 is inlaid with a sealing ring 3, and the outer diameter of the hub 11 and the inner diameter of the sealing ring 3 are clearance fit, and the unilateral clearance is 0.15mm. The sealing ring 3 is made of copper.

[0022] In this embodiment, the width of the water tank 111 is 4mm, and the depth is 9mm; the length of the water outlet hole 21 is 15mm, and the width is 8mm.

[0023] The working principle of the above-mentioned sewage pump with the function ...

Embodiment 2

[0025] refer to Figure 1-Figure 5 As shown, the present embodiment has the sewage pump with the function of automatically balancing the axial force, the width of the water tank 111 on the hub 11 is 8mm, and the depth is 4mm; the length of the outlet hole 21 on the pump body 2 is 22mm, and the width is 5mm. All the other are with embodiment 1.

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Abstract

The invention relates to a sewage pump with an automatic axial thrust balancing function. The sewage pump comprises a pump body and an impeller which is provided with a hub. A water groove is formed in the hub. A connecting hole and a water outlet are formed in the pump body. The water groove is connected with the connecting hole and the water outlet in sequence. High-pressure water in the impeller is discharged from the pump body through the water groove in the hub, the connecting hole and the water outlet in sequence, and axial thrust is balanced. Compared with the prior art, the sewage pump has the advantages that axial thrust is automatically balanced, the structure is simple, and service life is long.

Description

technical field [0001] The invention relates to a sewage pump, in particular to a sewage pump with the function of automatically balancing the axial force. Background technique [0002] When the sewage pump is running, there is inevitably an axial force due to the hydraulic action of the impeller. Due to the existence of this axial force, the motor bearing is easily damaged. At the same time, the static ring of the machine seal is thrust towards the moving ring, which affects the use of the machine seal. life. In order to solve these problems, some of the commonly used methods are to add a sealing ring on the back of the impeller and open a balance hole to balance the axial force; some add a back impeller or back blade to the back of the impeller to balance the axial force. Although these methods can all play the role of balancing the axial force, they consume a lot of extra power of the motor and have a great impact on the efficiency of the pump. Contents of the inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/22F04D29/42F04D29/08F04D29/66F04D29/02
Inventor 蒋必瑞
Owner SHANGHAI RAYBON MACHINERY GRP
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