Shaft seal, in particular radial shaft seal, having at least one sealing element

A sealing element and sealing device technology, applied in the direction of engine components, engine sealing, mechanical equipment, etc., can solve the problems of expensive, complicated manufacturing of sealing elements, wear of sealing lips, etc., to prevent creep, reduce error rate and manufacturing cost , The effect of reducing manufacturing costs

Pending Publication Date: 2021-07-09
KACO
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this leads to a correspondingly greater wear of the sealing lip
Different fillers are therefore added to the sealing element, which complicates and makes the manufacture of the sealing element more expensive

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
  • Shaft seal, in particular radial shaft seal, having at least one sealing element
  • Shaft seal, in particular radial shaft seal, having at least one sealing element
  • Shaft seal, in particular radial shaft seal, having at least one sealing element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] according to figure 1 The shaft seal has a running sleeve 1 which is fitted in a rotationally fixed manner on the shaft to be sealed (not shown). The running sleeve 1 is fitted onto the shaft to be sealed, preferably with a press fit. At one end, the running sleeve 1 has a radially outwardly directed annular collar 2 . The other end 3 of the running sleeve 1 can expand in a funnel-shaped manner. The radial dimension of the annular flange 2 is greater than the radial dimension of the flared end. The funnel-shaped widening of the end of the running sleeve 1 contributes to better alignment when installing the shaft seal and can be used as a transport fastening and for packing pre-lubricant in order to prevent dragging and contamination.

[0022] The two sealing lips 4 , 4 a of the two sealing elements 5 , 5 a bear against the cylindrical outer side of the running sleeve 1 or its peripheral surface 27 in a sealing manner under radial pretension. The sealing element for...

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 shaft seal, in particular a radial shaft seal, having at least one sealing element (5, 5a) made of a polyfluorocarbon, preferably polytetrafluoroethylene. The sealing element (5, 5a) is provided with a sealing lip (4, 4a) which bears against the surface to be sealed under the action of a radial force. The sealing element (5, 5a) is supported by at least one elastomeric element which consists of a sealing ring (7, 7a).

Description

technical field [0001] The invention relates to a shaft seal, in particular a radial shaft seal, according to the preamble of claim 1 . Background technique [0002] In shaft seals in the form of radial shaft seals, polyfluorocarbons, in particular polytetrafluoroethylene, are advantageously used as material for the sealing element due to their special physical and chemical properties. The sealing element is designed as an annular disc, the radially inner region of which is elastically bent in order to form a sealing lip. Creep phenomena can be observed for polyfluorocarbons, especially polytetrafluoroethylene. Furthermore, the material has low mechanical strength. Creep of this material results in a weakened seal. To counteract this creep effect, the radial preload acting on the sealing lip is increased for this purpose. However, this leads to a correspondingly greater wear of the sealing lips. Different fillings are therefore added to the sealing element, which compli...

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): F16J15/3208F16J15/3232F16J15/324F16J15/3252F16J15/3268F16J15/3284
CPCF16J15/3208F16J15/3232F16J15/324F16J15/3252F16J15/3268F16J15/3284F16J15/3228F16J15/3256
Inventor M·波德什瓦A·维诺格拉多夫
Owner KACO
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