Chemical centrifugal pump with balanced axial force and high inlet pressure

A technology of inlet pressure and axial force, applied in the field of centrifugal pumps, can solve problems such as unsatisfactory design of axial force balance and reaction.

Inactive Publication Date: 2017-05-17
江苏芬奇工业设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the axial force balance of centrifugal pumps with low inlet pressure is mainly through the design of the balance ring + balance hole, or the design of the back blade, or...

Method used

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  • Chemical centrifugal pump with balanced axial force and high inlet pressure

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Embodiment Construction

[0011] Further description will be made below in conjunction with drawings and embodiments.

[0012] figure 1 Shown: an axial force balance high inlet pressure chemical centrifugal pump includes pump body 1, water inlet 2, water outlet 3, pump cover 4, impeller 5, pump shaft 6, return water pipe 8, overflow valve 9 . One end of the pump body 1 is the water inlet 2, and the pump body 1 is provided with a water outlet 3, the pump shaft 6 is supported by a bearing and pierced to seal the pump cover 4 at the other end of the pump body, which extends into the pump body to connect with the impeller 5, and the water outlet 3 leads out a return water The outer pipeline 8 and the return water outer pipeline 8 are provided with an overflow valve 9, and the return water outer pipeline is connected to the pump cover high-pressure zone 7 between the pump cover and the impeller through the return water inner pipeline 81 in the pump cover.

[0013] On the basis of the above embodiments, th...

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Abstract

The invention relates to a chemical centrifugal pump with balanced axial force and high inlet pressure. The chemical centrifugal pump comprises a pump body, a pump shaft, an impeller and a pump cover, wherein a water inlet is formed in one end of the pump body; a water outlet is formed in the pump body; the pump shaft is in penetrating connection with a bearing support; and the pump cover for encapsulating the other end of the pump body extends into the pump body and is connected with the impeller. The chemical centrifugal pump is characterized in that a returned water outer pipeline is guided out from the water outlet, wherein an overflow valve is arranged on the returned water outer pipeline; and the returned water outer pipeline communicates to a pump cover high-pressure area between the pump cover and the impeller through the pump cover. The chemical centrifugal pump is simple and compact in structure, can effectively ensure that axial force of the centrifugal pump is balanced, and is convenient and stable in control.

Description

technical field [0001] The invention relates to a centrifugal pump, in particular to an axial force balanced high inlet pressure chemical centrifugal pump. Background technique [0002] The axial force balance design of a single-stage centrifugal pump is based on the balance under high pressure conditions. When the inlet is not pressurized or the pressurized pressure does not reach the design pressure, the axial force of the impeller is unbalanced. Generally, the axial force balance of centrifugal pumps with low inlet pressure is mainly through the design of the balance ring + balance hole, or the design of the back blade, or the design of the back impeller. Satisfying, even counterproductive. The imbalance of axial force will directly affect the service life of the bearing, including the excessive temperature rise of the bearing, which in turn will affect the service life of the pump bearing, as well as the vibration and stability of the pump. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): F04D1/00F04D29/041F04D29/22F04D29/42
CPCF04D1/00F04D29/041F04D29/2222F04D29/426
Inventor 盛绛肖爱华于伟戴旭凯朱平
Owner 江苏芬奇工业设备制造有限公司
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