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Modularized magnetic liquid sealing device

A magnetic liquid and sealing device technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of difficult assembly and the lack of wide application of magnetic liquid sealing devices, so as to ensure sealing performance, shorten downtime, reduce The effect of friction and wear and temperature rise

Active Publication Date: 2021-07-13
BEIJING JIAOTONG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, there are difficulties in assembling the traditional magnetic liquid sealing device, which is one of the reasons why the magnetic liquid sealing device is not widely used, so a modular magnetic liquid sealing device is proposed

Method used

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  • Modularized magnetic liquid sealing device

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Embodiment Construction

[0013] The present invention is further described by taking the accompanying drawings as a specific embodiment. For the convenience of description, if the words "left" and "right" appear in the following, it only means that they are consistent with the left and right directions of the accompanying drawings, and do not limit the structure.

[0014] A modular magnetic liquid seal such as figure 1 As shown, the device includes: shaft (1), sealing ring I (2), sleeve (3), annular permanent magnet I (4), magnetic conduction ring (5), annular permanent magnet II (6), box (7), seal ring II (8), seal ring III (9), inner shoulder sleeve cup (10), left bearing (11), metal gasket I (12), right bearing (13), metal gasket Ⅱ(14), end cover(15), round nut Ⅰ(16), round nut Ⅱ(17), flat head set screw(18).

[0015] It constitutes the connection between the various parts of the device: the sealing ring I (2) is installed in the groove of the inner surface of the sleeve (3); the sealing ring II (...

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Abstract

The invention discloses a modularized magnetic liquid sealing device, and belongs to the field of mechanical engineering sealing. The device comprises a shaft, a sealing ring I, a sleeve, an annular permanent magnet I, a magnetic conductive ring, an annular permanent magnet II, a box body, a sealing ring II, a sealing ring III, an inner convex shoulder sleeve cup, a left bearing, a metal gasket I, a right bearing, a metal gasket II, an end cover, a round nut I, a round nut II and a flat set screw. Contact type end face sealing is changed into magnetic liquid sealing, frictional wear and temperature rise of the two sealing surfaces are reduced, the modularized magnetic liquid sealing device does not need to be disassembled and assembled complexly and is directly replaced by spare parts after being damaged, and the shutdown time is shortened. Axial sealing is changed into radial sealing, the axial size of the sealing device is reduced, and meanwhile the sealing device can bear small-amplitude radial vibration. The two annular permanent magnets with opposite magnetic pole directions are used, so that a magnetic circuit is shortened, the magnetic field intensity of a sealing gap is enhanced, and the sealing capability is improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering sealing, and in particular relates to a modular magnetic liquid sealing device. Background technique [0002] The end face seal is a widely used rotating shaft dynamic seal. It has achieved good results in many working conditions such as high pressure, high temperature, high speed, flammable, explosive and corrosive media. It has become an extremely important fluid sealing technology. dynamic seal form. However, the end face seal is a kind of contact seal. The heat generated by the extrusion and friction of the two seal end faces will increase the temperature of the seal end face, cause the liquid film to be unstable or destroyed, and aggravate the wear of the sealing surface. It is difficult to guarantee the life of the seal. . The magnetic liquid seal realizes the seal through the magnetic liquid in the sealing gap, which can avoid the problem of friction and wear caused by dire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/43
CPCF16J15/43
Inventor 何新智王志斌刘思佳李德才
Owner BEIJING JIAOTONG UNIV
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