Sealing device with evenly distributed magnetic liquid

A magnetic liquid, evenly distributed technology, applied in the direction of engine seals, engine components, mechanical equipment, etc., can solve the problems of reduced pressure resistance, uneven distribution of magnetic liquid, pressure resistance and seal series are not proportional, etc. The effect of long service life and improved pressure resistance

Inactive Publication Date: 2010-06-23
BEIJING JIAOTONG UNIV
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that during the equipment process of the existing magnetic liquid seal, the magnetic liquid cannot smoothly flow into the sealing gap under the action of the magnetic field force, or the distribution of the magnetic liquid is uneven, and there is no chance of the magnetic liquid on some pole teeth. Existence, so that the pressure resistance capacity is not proportional to the number of sealing stages, resulting in a decrease in the overall pressure resistance capacity

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
  • Sealing device with evenly distributed magnetic liquid
  • Sealing device with evenly distributed magnetic liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention is further described with accompanying drawing as specific embodiment:

[0016] A sealing device for evenly distributing magnetic liquid, the sealing structure includes: a housing 2, a left bearing 3, a right bearing 13, a left pole piece 4, a right pole piece 11, a permanent magnet 8, an adjusting gasket 14, a shaft 17, and a flange Disc 16, the left bearing 3, the left pole shoe with rubber sealing ring, the permanent magnet 8, the right pole shoe with rubber sealing ring, and the right bearing 13 are installed together in turn to form a sealing assembly, which is connected to the inner ring of the permanent magnet 8 After the magnetic liquid is injected on the surface, the sealing assembly is placed on the boss in the casing 2, the adjusting gasket 14 and the flange 16 are installed, and the screw 15 is threaded with the casing 2, so that the sealing assembly is fixed in the casing 2, Finally, install the shaft 17 according to the direction from...

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 relates to a sealing device with evenly distributed magnetic liquid, which belongs to the sealing field of mechanical engineering. The sealing device comprises a sealing assembly formed by installing a left bearing, a left pole shoe with a rubber sealing ring, a permanent magnet, a right pole shoe with a rubber sealing ring and a right bearing together. The space between the internal surface of the permanent magnet and the external surface of an axle is between 5 mm and the height of pole teeth to ensure that magnetic liquid successfully inflows into the clearance between the pole teeth and the axle under the action of magnetic field force, the width center of the permanent magnet is radially provided with a through hole, a through hole with tapered threads is arranged on the position of a casing, the width between the through hole and the left surface is l plus the width of the left bearing plus the width of the left pole shoe with the rubber sealing ring plus half of the width of the permanent magnet, a pipe head is connected in the through hole with tapered threads, and the sealing assembly is filled with air to ensure each pole tooth of the pole shoe to be distributed with the magnetic liquid, thereby the compressive resistance of the device is improved, and the service life of the device is prolonged.

Description

technical field [0001] The invention belongs to the field of mechanical engineering sealing. Background technique [0002] In the existing design of magnetic liquid sealing device, the magnetic liquid is usually injected into the gap between the magnet and the pole piece before installing the seal assembly, and after the shaft and the seal assembly on it are sequentially loaded into the housing, the magnet, pole piece, and shaft will form a In the magnetic circuit, under the action of the magnetic field force, the magnetic liquid flows into the gap between the pole shoe pole teeth and the shaft, and several liquid "O" rings are formed in the gap to realize the sealing effect. When the distance between the permanent magnet and the shaft is too large, the magnetic liquid cannot flow into the sealing gap only under the action of the magnetic field force; when the number of pole teeth on the pole piece is large, the distribution of the magnetic liquid is uneven, and there is alm...

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): F16J15/43F16J15/53
Inventor 李德才张猛
Owner BEIJING JIAOTONG UNIV
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