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Soft packing seal

A technology of sealing device and soft packing, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., which can solve the problems of serious friction loss, large calorific value, and large leakage of lubricating fluid

Active Publication Date: 2022-07-05
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the friction loss between the soft packing and the shaft is serious, and the heat generation is large
[0003] The soft packing seal of the related art adds lubricating fluid to reduce the friction between the soft packing and the shaft, but when the soft packing is squeezed and deformed, the leakage of the lubricating liquid will be large

Method used

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Embodiment Construction

[0030] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] like Figure 1-Figure 5 As shown, the soft packing sealing device 1000 according to the embodiment of the present invention includes a stuffing box 100, a shaft 110, a first soft packing 210, a magnetic sealing assembly 300, a gland 150 and a magnetic liquid (not shown in the figure).

[0032] like Figure 1-Figure 3 As shown, the stuffing box 100 has a shaft bore 120 . The shaft 110 passes through the shaft hole 120 , and at least a part of the shaft 110 is located in the shaft hole 120 . The shaft hole 120 includes a cavity 130 . The wall surface of the cavity 130 includes the first peripheral wall surface 131 and the...

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PUM

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Abstract

The invention discloses a soft packing sealing device. The soft packing sealing device comprises a stuffing box, a shaft, a first soft packing, a magnetic sealing component, a gland and a magnetic liquid. The first soft packing is sleeved on the shaft, the outer peripheral surface of the first soft packing is in contact with the first peripheral wall surface, and the inner peripheral surface of the first soft packing is in contact with the outer peripheral surface of the shaft; the magnetic seal assembly is sleeved on the shaft, the magnetic There is a sealing gap between the sealing assembly and the shaft; a part has an end face, and the end face and the first wall face are opposite in the axial direction of the shaft, and the magnetic sealing assembly is located between the first soft packing and a part of the gland along the axial direction of the shaft, and The first soft packing abuts against the first wall surface and the magnetic sealing component along the axial direction of the shaft; the magnetic liquid is filled in the sealing cavity, and the magnetic liquid is suitable for being adsorbed in the sealing gap under the magnetic force. The invention can use the magnetic liquid to lubricate between the soft packing and the shaft, and the leakage of the magnetic liquid is small under the magnetic force of the magnetic sealing assembly.

Description

technical field [0001] The invention relates to the technical field of sealing, in particular to a soft packing sealing device. Background technique [0002] The soft packing seal is a traditional form of sealing with simple structure, low cost and convenient disassembly and assembly. By plugging the leakage passage with soft packing before the shaft and the casing, the soft packing is sealed against the inner wall surface of the shaft and the stuffing box with a suitable radial force when it is deformed. However, the friction loss between the soft packing and the shaft is serious, and the heat generation is large. [0003] The soft packing seal of the related art adds lubricating liquid to reduce the friction between the soft packing and the shaft, but when the soft packing is squeezed and deformed, the leakage of the lubricating liquid will be large. SUMMARY OF THE INVENTION [0004] The present invention aims to solve one of the technical problems in the related art a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/32F16J15/3268F16J15/3284F16J15/43
CPCF16J15/32F16J15/3268F16J15/3284F16J15/43
Inventor 李德才陈思宇李倩
Owner TSINGHUA UNIV