Combined type sealing device with double end faces

A sealing device and combined technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of loss of working ability of the seal, difficult to improve the service life, failure of the plane seal, etc., to achieve high working reliability, internal The effect of small temperature difference outside and stable sealing performance

Inactive Publication Date: 2011-05-25
江苏金鹰流体机械有限公司
View PDF13 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the wide end face of the flat seal, this kind of fluid is easy to form condensation between the sealing surfaces, so that the seal loses its working ability. A large amount of friction heat will be generated

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
  • Combined type sealing device with double end faces
  • Combined type sealing device with double end faces

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1: see attached figure 1 shown.

[0022] A double-end combined sealing device, installed in fluid conveying equipment, used to realize shaft end sealing, including gland 1, shaft sleeve 2, drive ring 3, sealing ring 4, limit block 5, main seal 6, auxiliary seal 7.

[0023] The primary seal is in direct contact with the fluid to be sealed, and the secondary seal is in direct contact with the atmosphere.

[0024] The main seal 6 is a knife edge seal, and the main seal 6 includes a pair of main friction rings 8 . The main friction ring 8 includes an active ring 9 and a main static ring 10. The surface of any main friction ring 8 in contact with the other main friction ring 8 is its friction surface, and the friction surface is annular, and the friction surface of the active ring 9 is single. The side width is smaller than the single side width of the friction surface of the main static ring 10 , and the single side width of the friction surface of the a...

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

PropertyMeasurementUnit
Unilateral widthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a combined type sealing device with double end faces, which is installed at fluid conveying equipment to realize the sealing of a shaft end. The combined type sealing device with the double end faces comprises a primary seal and a secondary seal, wherein the primary seal is in direct contact with fluid to be sealed, the secondary seal is in direct contact with the atmosphere, the primary seal comprises a pair of primary friction rings, and the secondary seal comprises a pair of secondary friction rings. Because the combined type sealing device with the double end faces, which is disclosed by the invention, adopts a double-seal structure, the operational reliability is high, and the combined type sealing device with the double end faces is suitable for sealing the shaft end of the conveying equipment of the fluid which has high viscosity and strong adhesiveness and is easy to polymerize.

Description

technical field [0001] The invention relates to a mechanical sealing device, in particular to a double-face combined sealing device. Background technique [0002] In the prior art, in the petroleum and petrochemical industry, for fluids with high viscosity, easy polymerization and strong adhesion, such as plastics, pulp, paint, rubber stock solution, etc., the shaft end seal form of the conveying equipment usually adopts ordinary mechanical seals. Sealing, that is, a flat sealing structure. In terms of service life, it is much lower than its seal life in ordinary low-viscosity stable fluids. Due to the wide end face of the flat seal, this kind of fluid is easy to form condensation between the sealing surfaces, so that the seal loses its working ability. A large amount of frictional heat will be generated, which will cause the friction ring to be in a high-temperature friction state for a long time and cause thermal cracking, resulting in early failure of the plane seal, so...

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): F16J15/16F16J15/52F16J15/46
Inventor 瞿国平房硕君
Owner 江苏金鹰流体机械有限公司
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