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Double-helix flow diverter

A technology of conducting fluid and double helix, applied in the field of double helix conducting fluid, can solve the problems of reduced water flow energy, large hydraulic loss, low pump efficiency, etc., and achieve the effect of reducing hydraulic loss, improving hydraulic efficiency and expanding cross-sectional area.

Inactive Publication Date: 2014-01-29
TAIZHOU LINGXIAO PUMP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the first-stage impeller of the double-impeller horizontal centrifugal pump, the diversion part adopts a single helix diversion. Due to the limitation of the product structure, when it is transferred from the first-stage impeller to the second-stage water pump diversion, its guide If the outlet of the fluid is too small, it is difficult for the water flow produced by the pump to enter the next impeller through the diversion port, the energy of the water flow is greatly reduced, the hydraulic loss is too large, the efficiency of the pump is low, and the flow rate is small, which cannot reach the purpose of the designer.

Method used

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Embodiment Construction

[0014] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0015] Such as figure 1 As shown, the double helix guide body includes a main body 1, and the impeller 2 of the centrifugal pump is arranged in the main body 1, and a plurality of blades 3 are evenly distributed on the impeller 2. Such as figure 1 As shown, the edge of the body 1 is provided with two spiral flow passages communicating with the body 1: the first spiral flow passage 4 and the second spiral flow passage 5, and the water inlet end of the first spiral flow passage 4 is tangent to the main body 1 Set, the water inlet end of the snail-shaped flow channel two 5 is arranged tangentially with the body 1, the outer end of the snail-shaped flow channel one 4 has a water outlet one 6, and the outer end of the snail-sh...

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Abstract

The invention provides a double-helix flow diverter, belongs to the technical field of water pumps and solves the problems of large hydraulic loss and low water pump efficiency of single-helix flow diversion parts in the first-stage impellers of existing double-impeller horizontal type centrifugal pumps. The double-helix flow diverter comprises a flow diverter body; the impeller of a centrifugal pump is arranged inside the flow diverter body and evenly provided with a plurality of blades; the edge of the flow diverter body is provided with two helix flow channels which are communicated with the flow diverter body and composed of a worm flow channel I and a worm flow channel II, the water inlets of the worm flow channel I and the worm flow channel II are tangent to the flow diverter body, the external end of the worm flow channel I is provided with a water outlet I, and the external end of the flow channel II is provided with a water outlet II. The double-helix flow diverter enlarges the cross area of the water outlets, improves the hydraulic efficiency and the water output of water pumps and is compact in structure and reasonable in design.

Description

technical field [0001] The invention belongs to the technical field of water pumps, and relates to a guide body of a first-stage impeller of a double-impeller horizontal centrifugal pump, in particular to a double-helix guide body of the first-stage impeller of a double-impeller horizontal centrifugal pump. Background technique [0002] At present, in the first-stage impeller of the double-impeller horizontal centrifugal pump, the diversion part adopts a single helix diversion. Due to the limitation of the product structure, when it is transferred from the first-stage impeller to the second-stage water pump diversion, its guide If the outlet of the fluid is too small, it is difficult for the water flow produced by the pump to enter the next impeller through the diversion port, the energy of the water flow is greatly reduced, the hydraulic loss is too large, the efficiency of the pump is low, and the flow rate is small, which cannot reach the purpose of the designer. . Cont...

Claims

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Application Information

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IPC IPC(8): F04D29/44
Inventor 卢昌苗孙钢军苗惠魏海涛
Owner TAIZHOU LINGXIAO PUMP
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