Improved axial force balancing structure of shielded pump

A technology of balancing structure and axial force, applied to parts, pumps, pump elements, etc. of pumping devices used for elastic fluids, can solve problems that cannot be effectively avoided, so as to increase service life, improve working conditions, reduce The effect of bearing friction

Inactive Publication Date: 2006-05-31
SHANGHAI EAST PUMP(GRP) CO LTD
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, none of the existing canned pumps can effectively avoid the contact between the thr

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
  • Improved axial force balancing structure of shielded pump

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0011] Such as figure 1 As shown, the improved axial force balance structure of the canned motor pump of the present invention is composed of a pump body 1, a pump shaft 8, an impeller 2 and a bearing seat 3. The bearing seat 3 is arranged in the pump body 1. The bearing housing 3 is provided with a bearing 4, the pump shaft 8 is provided in the bearing 4, and the impeller 2 is sleeved on the pump shaft 8 and located in front of the bearing housing 3. , Wherein, the front cover of the impeller 2 is provided with a cylindrical boss 9, the axis of the cylindrical boss 9 coincides with the axis of the pump shaft 8, the A first cylindrical cavity is provided inside the pump body 1 on the front side of the impeller 2, and the axis of the first cylindrical cavity coincides with the axis of the cylindrical boss 9. The cylindrical boss 9 is arranged in the first cylindrical cavity, and a first gap is provided between the outer circumferential surface of the cylindrical boss 9 and the inne...

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

An axial power balance device for a shield pump comprises pump body, pump axial, impeller and bearing support. The bearing support is fixed in the pump body. The pump axial is installed in the bearing support. The impeller fits over the axial and in front of the bearing base. On the front cover of the impeller installed a convex table. A column chamber is formed to the front of the impeller in the pump body. The column table is in the chamber and leaves a fixed gap to the chamber. On the back cover of the impeller fixed a convex column circle. A second column chamber is formed to the back of the impeller in the pump body. A fixed second gap is formed between the second chamber and the circle. A convex part on the bearing support faces to the impeller back cover. The gap between the convex parts to the back cover is axially adjustable. The axial gap and the radial gap form a hydraulic pressure balance system to balance the axial power and reduce friction.

Description

technical field [0001] The invention relates to a canned pump, in particular to an improved axial force balance structure of the canned pump. Background technique [0002] In the prior art, the shielded pump has no shaft seal device, the motor and the pump are coaxial, and the stator and rotor are separated from the conveying medium by shielding sleeves. The motor cooling and bearing lubrication use its own conveying medium, and the shaft support adopts sliding bearings. When the canned pump is in operation, when the pressure on the impeller front cover and rear cover is unbalanced, an axial force will be generated, and the axial force will act on the thrust bearing through the rotor assembly. The existing pump axial force balance technology includes the balance hole method and the back blade method. The rear sealing ring is used to separate the high-pressure chamber on the back of the impeller to form a low-pressure chamber. A balance hole is drilled in the low-pressure cha...

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
IPC IPC(8): F04D29/66F04D1/00
Inventor 吴永旭
Owner SHANGHAI EAST PUMP(GRP) CO LTD
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
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap