Horizontal middle-split-type parallel connection multistage pump

A split-type, multi-stage pump technology, which is applied in the field of multi-stage pumps, can solve the problems of difficult shell casting, low specific speed pump efficiency, and high manufacturing cost, so as to eliminate internal conversion channels, solve casting problems, and reduce The effect of casting difficulty

Active Publication Date: 2017-05-31
CHANGSHA CANON GENERAL PUMPS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the horizontal split multistage pumps in the prior art are single-suction and the impellers are arranged in one direction, which is lower than the speed pump efficiency, and the axial force of the pump cannot be automatically balanced during operat

Method used

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  • Horizontal middle-split-type parallel connection multistage pump
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  • Horizontal middle-split-type parallel connection multistage pump

Examples

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Embodiment Construction

[0020] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] Such as Figure 1 to Figure 3 As shown, the horizontal split parallel multistage pump of the present invention includes an outlet 21, a first inlet 22 and a second inlet 23 arranged on the pump casing, wherein the first inlet 22 and the second inlet 23 are respectively located at the outlet The left and right sides of 21, and the first inlet 22 and the second inlet 23 are symmetrically distributed around the outlet 21; To the outside of the pump casing, and the end of the central shaft protruding from the outside of the pump casing is connected to the pump coupler 1 through the rotor part 2; the inside of the pump casing is also provided with a three-stage impeller, wherein the first-stage impeller and The secondary impellers are symmetrically distributed, and the final impeller adopts double suction to ensure the automatic bal...

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Abstract

The invention discloses a horizontal middle-split-type parallel connection multistage pump. The multistage pump comprises an outlet, a first inlet and a second inlet which are formed in a pump housing. The first inlet and the second inlet are located in the left side and the right side of the outlet correspondingly and are distributed in a left-right symmetrical mode by using the outlet as the center. A center shaft is arranged in the axial direction of the center part of the pump housing. One end of the center shaft extends out of the pump housing, and the end, extending out of the pump housing, of the center shaft is connected with a pump connector through a rotor part. Three stages of impellers are further arranged inside the pump housing. The first-stage impeller and the second-stage impeller are symmetrically distributed, and double suction is adopted in the tail-stage impeller, so that automatic balancing of axial force is guaranteed. Transition flow channels are adopted between the stages, and an internal conversion flow channel is omitted. According to the horizontal middle-split-type parallel connection multistage pump, the three stages of impellers are adopted, the first-stage impeller and the second-stage impeller are symmetrically distributed, double suction is adopted in the tail-stage impeller, the internal conversion flow channel is omitted, casting difficulties are lowered, and automatic balancing of the axial force is guaranteed.

Description

technical field [0001] The invention relates to the technical field of multistage pumps, in particular to a horizontally split parallel multistage pump. Background technique [0002] Horizontal split multistage pump is a kind of high-lift pump, which has the characteristics of high lift, large flow, high power, etc. It is mostly used in sewage treatment, environmental protection, large-scale water conservancy and hydropower, etc. The horizontal split multistage pump with high head, large flow and high power has the advantages of small footprint, low operating cost, safety and reliability, etc. It is the first choice for pump station technical transformation and has broad market application prospects. [0003] At present, most of the horizontal split multistage pumps in the prior art are single-suction and the impellers are arranged in one direction, which is lower than the speed pump efficiency, and the axial force of the pump cannot be automatically balanced during operatio...

Claims

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Application Information

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IPC IPC(8): F04D1/10F04D29/18F04D29/66
CPCF04D1/10F04D29/185F04D29/669
Inventor 罗瑞祥
Owner CHANGSHA CANON GENERAL PUMPS
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