Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Horizontal multi-stage pump with variable lifts

A multi-stage pump, variable technology, applied in the direction of non-variable pumps, non-volume pumps, pumps, etc., can solve the problems that the impellers of all stages cannot be positioned at the same time, the flow loss is different, and the suction performance is poor, so as to achieve simple structure , increase the service life, easy to manufacture and maintain the effect

Inactive Publication Date: 2016-11-16
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing horizontal multistage centrifugal pump has poor suction performance and relatively large axial force. The resulting flow losses are different, resulting in impellers of all stages not being at the optimum operating point at the same time, and thus reducing efficiency. In order to solve the above problems, the present invention provides a variable head horizontal multistage pump

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Horizontal multi-stage pump with variable lifts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] as attached figure 1 As shown, a horizontal multistage pump with a variable head design includes a pump body, a pump shaft 1 is installed in the pump body, and the two ends of the pump shaft 1 are respectively installed on the water inlet end bearing 4 and the water outlet end bearing 22, the pump A shaft coupling 2 is installed at the connecting end of the shaft 1 and the output shaft of the motor, and the pump body includes a water inlet section 11, a water outlet section 16 connected in sequence, a plurality of middle sections 13 and a tail section arranged between the water inlet section 11 and the water outlet section 16. Composed of cover 18, the pump shaft 1 is installed in the water inlet section 11, the middle section 13, the water outlet section 16 and the tail cover 18, the water inlet section 11 is provided with a suction port, and the water outlet section 16 is provided with a discharge port, the suction port and the discharge port are both Set upwards, mul...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a horizontal multi-stage pump with variable lifts. The horizontal multi-stage pump with the variable lifts comprises a pump body. The pump body comprises a water feeding section, a water discharging section, a plurality of middle sections arranged between the water feeding section and the water discharging section, and a tail cover, wherein the water feeding section, the water discharging section, the multiple middle sections and the tail cover communicate with one another sequentially. A sucking section is provided with a sucking opening. A pumping-out section is provided with an output opening. The sucking opening and the output opening are both arranged upwards. A plurality of impellers are arranged on a pump shaft in an inner cavity of the multi-section pump body and include the first-stage impeller installed on the part, near the water feeding section, of the pump shaft, and the multiple second-stage impellers arranged at the back of the first-stage impeller. A balancing device is arranged on one side of the water discharging section of the pump body. Each middle section is internally provided with one impeller, and the number of the middle sections of the pump body is variable. A plurality of impeller installation positions are reserved on the pump shaft. The outer diameter of the later-stage impeller is larger than that of the former-stage impeller. The hub diameter of the later-stage impeller is equal to that of the former-stage impeller. The designed flow amounts of all the stages of impellers are the same, the lifts are different, it is guaranteed that all the stages of impellers can be in the best work condition at the same time, and efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of fluid pumps, in particular to a horizontal multistage pump with a variable design head. Background technique [0002] Horizontal multistage centrifugal pump has the characteristics of wide performance range, low noise, long life, convenient installation and maintenance, etc. It is used to transport clean water or other liquids with physical and chemical properties similar to water. It is mainly suitable for water supply and drainage of urban high-rise buildings and fire water, power plants. , factories, mine water supply and drainage, long-distance water delivery, water in the production process cycle, HVAC cycle, domestic water and other purposes. [0003] However, the existing horizontal multistage centrifugal pump has poor suction performance and large axial force. At the same time, the conventional multistage centrifugal pump has the same parameters such as the flow rate and lift of the impellers at a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F04D1/06F04D29/22F04D29/66F04D29/02F04D15/00
CPCF04D1/06F04D15/0088F04D29/026F04D29/2216F04D29/669
Inventor 何小可宋小勇徐启
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products