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Anti-cavitation double-inlet double suction multi-stage pump

A multi-stage pump and double-inlet technology, which is applied in the direction of pumps, pump components, non-variable pumps, etc., can solve the problems of vane pump basic structure and inflow mode optimization, and achieve the effect of avoiding cavitation and large suction area

Inactive Publication Date: 2017-05-31
JIANGSU UNIV ZHENJIANG RES INST OF FLUID ENG EQUIP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the above-mentioned patent only mentions the addition of additional devices to improve the cavitation capacity and does not optimize the basic structure and inflow mode of the vane pump.

Method used

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  • Anti-cavitation double-inlet double suction multi-stage pump
  • Anti-cavitation double-inlet double suction multi-stage pump
  • Anti-cavitation double-inlet double suction multi-stage pump

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0043]An anti-cavitation double-inlet double-suction multi-stage pump, including a pump inlet pipe 1, a pump body 2, a pump shaft 3, a first-stage double-suction impeller 4, a secondary double-suction impeller 5, an outlet pipe 6, and a transition flow channel 7, Bearing housing 8, deep groove ball bearing 9, packing seal 10, mouth ring 11;

[0044] The water inlet pipe 1 and the water outlet pipe 6 of the pump are respectively connected to the water inlet end and the water outlet end of the pump body 2;

[0045] The pump body 2 is divided into upper and lower parts along the horizontal plane of the pump shaft 3, and the upper and lower parts are connected by bolts;

[0046] The quantity of the first-stage double-suction impeller 4 is 2, and the first-stage double-suction impeller 4 is fixed side by side on the pump shaft 3 through a shaft sle...

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Abstract

The invention provides an anti-cavitation double-inlet double suction multi-stage pump which comprises a water inlet pipe, a pump body, a pump shaft, first-class double suction impellers, a secondary double suction impeller, a water outlet pipe, a transitional flow channel, a bearing block, a deep groove ball bearing, a packing seal element and an impeller ring. The water intake way of the impeller is improved. The traditional centrifugal pump usually has a suction inlet, and the anti-cavitation double-inlet double suction multi-stage pump has two double suction impellers used as the first-class double suction impellers so as to have four suction inlets. Compared with common centrifugal pump, the anti-cavitation double-inlet double suction multi-stage pump has larger suction area under the same flow. Thus, the intensity of pressure of the inlets of the impellers is higher, and cavitation can be effectively avoided.

Description

technical field [0001] The invention relates to a vane pump, in particular to an anti-cavitation double-inlet double-suction multistage pump. Background technique [0002] Multistage pumps can be used in many industrial sectors such as petroleum, chemical industry, machinery, mining, light industry, medicine and food. In many processes of industrial production, such as heating and water supply, boiler water supply, seawater desalination, industrial process vacuum technology, metallurgy, phosphorus removal, chemical gas feeding, agricultural water conservancy, etc., multistage pumps are widely used. It can pump out flammable and explosive gases, and it can also pump out dusty and water-containing gases. Therefore, the application of multi-stage pumps is increasing. [0003] The speed of the multi-stage pump is high, and the inlet of the first-stage double-suction impeller has a through shaft to reduce the flow area and increase the flow velocity of the impeller inlet. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/66F04D1/08F04D29/44F04D29/22F04D29/42
CPCF04D1/08F04D29/22F04D29/2211F04D29/2266F04D29/426F04D29/445F04D29/669
Inventor 付强陈铭朱荣生王秀礼张本营刘刚李梦圆张国玉
Owner JIANGSU UNIV ZHENJIANG RES INST OF FLUID ENG EQUIP TECH
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