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Small-flow and high-lift efficient multi-stage rotary shell centrifugal pump

A high-lift, low-flow technology, applied in the direction of radial flow pumps, pumps for special fluids, components of pumping devices for elastic fluids, etc., can solve problems such as unstable work and low efficiency, and achieve improved efficiency and The effect of stability

Pending Publication Date: 2020-08-07
ZHEJIANG SCI-TECH UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In order to meet the needs of small flow and high head, high-speed centrifugal pumps are often used in actual production, that is, partial flow pumps, which have low efficiency due to low specific speed during work and are prone to malfunction under small flow. stable situation

Method used

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  • Small-flow and high-lift efficient multi-stage rotary shell centrifugal pump

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0029] Such as figure 1 As shown, the specific implementation includes the main shaft 3, the inlet end 9, the pump housing 19, the left bearing housing 4 and the right bearing housing 23; the left bearing housing 4, the connecting frame 6, the inlet end 9, the pump housing 19 and the right bearing housing 23 The shell structure of the multi-stage rotary casing centrifugal pump is connected sequentially. The pump casing 19 is equipped with three-stage coaxially connected rotor structural components. The three-stage rotor structural components are arranged coaxially. One end of the main shaft 3 passes through the left bearing box 4 in turn. The frame 6 and the inlet end 9 are connected synchronously with the first-stage rotor structure assembly in the pump casing 19. The inlet end 9 is provided with a liquid inlet 10, and the liquid enters the t...

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Abstract

The invention discloses a small-flow and high-lift efficient multi-stage rotary shell centrifugal pump. The small-flow and high-lift efficient multi-stage rotary shell centrifugal pump comprises a main shaft, an inlet end, a pump shell, a left bearing box and a right bearing box, wherein the left bearing box, a connecting frame, the inlet end, the pump shell and the right bearing box are sequentially connected to form a shell structure of the multi-stage rotary shell centrifugal pump, three stages of coaxially connected rotor structure assemblies are installed in the pump shell, one end of themain shaft sequentially penetrates through the left bearing box, the connecting frame and the inlet end and then is synchronously and rotationally connected with the first stage of rotor structure assembly in the pump shell, a liquid inlet is formed in the inlet end, liquid enters the three stages of rotor structure assemblies through the liquid inlet, and the third stage of rotor structure assembly stretches out of the right bearing box to pump out the liquid. The small-flow and high-lift efficient multi-stage rotary shell centrifugal pump has the advantages of being small in flow, high in lift and high in efficiency, is a small-flow and high-lift ultra-low specific speed pump, is high in working efficiency and low in rotating speed compared with a high-rotating-speed centrifugal pump, can increase the number of stages of the pump according to actual medium conveying requirements, and is not limited to a three-stage pump.

Description

technical field [0001] The invention relates to a small-flow, high-lift, high-efficiency multistage rotary casing centrifugal pump, in particular to a multistage high-efficiency rotary casing centrifugal pump used for fluid transportation in petrochemical, papermaking, food and other fields. Background technique [0002] In order to meet the needs of small flow and high head, high-speed centrifugal pumps are often used in actual production, that is, partial flow pumps, which have low efficiency due to low specific speed during work and are prone to malfunction under small flow. stable situation. [0003] The rotary casing centrifugal pump, namely the rotary jet pump, is a single-stage, cantilever type pump with small flow and high head. It is mainly used in petrochemical, papermaking, food and other fields to transport clean liquid or liquid containing solid particles. Since then, due to its simple structure, small size, stable operation, low speed, good anti-cavitation per...

Claims

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Application Information

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IPC IPC(8): F04D1/06F04D7/02F04D13/06F04D29/046F04D29/22F04D29/24F04D29/06F04D29/12F04D29/42F04D29/66
CPCF04D1/06F04D7/02F04D13/06F04D29/046F04D29/061F04D29/126F04D29/2238F04D29/242F04D29/426F04D29/669
Inventor 贾晓奇李松宇郑红海朱祖超
Owner ZHEJIANG SCI-TECH UNIV
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