Staggered maze cooling reaction still 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 short life and easy failure of magnetic liquid seals, and achieve the effects of improving liquefaction efficiency, increasing contact area, and reducing temperature

Inactive Publication Date: 2017-02-15
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is that when the existing magnetic liquid sealing device is used on the reaction kettle, the organic solvent vapor in the reaction kettle has a corrosive effect on the magnetic liquid, resulting in a short service life and easy failure of the magnetic liquid seal

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  • Staggered maze cooling reaction still magnetic liquid sealing device
  • Staggered maze cooling reaction still magnetic liquid sealing device

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Embodiment Construction

[0013] The present invention will be further explained by taking the drawings as specific embodiments:

[0014] Staggered labyrinth cooling reactor magnetic liquid sealing device such as figure 1 :Shell 1, static ring 2, static ring first seal ring 3, static ring second seal ring 4, positioning ring 5, first pole shoe first seal ring 6, first pole shoe 7, first pole shoe second Sealing ring 8, permanent magnet 9, second pole piece, first seal ring 10, second pole piece 11, second pole piece, second seal ring 12, upper end cover 13, magnetic fluid 14, rotary shaft 15, moving ring first Sealing ring 16, moving ring 17, moving ring second sealing ring 18.

[0015] The connection between the various parts of the device: the first sealing ring 16 of the moving ring and the second sealing ring 18 of the moving ring are installed in the inner circular groove of the moving ring 17 to form a moving ring with a sealing ring; The ring 2 is of a split type, sleeved on the outer circle of a mo...

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Abstract

The invention discloses a staggered maze cooling reaction still magnetic liquid sealing device and belongs to the field of mechanical engineering sealing. The problem that when existing magnetic liquid sealing devices are used on reaction stills, due to the fact that organic solvent vapor in the reaction stills has a corrosion function on magnetic liquid, the sealing devices are short in service life and prone to losing efficacy is solved. The device is composed of a magnetic liquid sealing assembly, a movable ring (17), a fixed ring (2) and a positioning ring (5). The fixed ring (2) is low in temperature and good in thermal conductivity, a groove is formed in an inner circle of the movable ring (17), and the movable ring (17) is poor in thermal conductivity, so that the fixed ring and the movable ring form a staggered maze, and liquefying of the organic solvent vapor is facilitated. The upper end face of the fixed ring (2) and the upper end faces of sealing teeth of the fixed ring (2) are inclined faces inclining towards a rotation shaft (15), and thus the liquefied organic solvent vapor flows downwards advantageously. The temperature of fixed ring cooling liquid is 11-15 DEG C lower than that of pole shoe cooling liquid, and liquefying of the organic solvent vapor on a pole shoe is reduced advantageously. The problem that the sealing devices are short in service life due to corrosion of organic solvent vapor to magnetic liquid is successfully solved.

Description

Technical field [0001] The invention belongs to the field of mechanical engineering sealing, and is suitable for magnetic liquid sealing of a reaction kettle. Background technique [0002] Magnetic fluid seals are widely used due to their advantages of zero leakage, long life, and low friction. When used on the reactor, due to the corrosive effect of the organic solvent vapor in the reactor on the magnetic liquid, the sealing device has a short life and is easy to fail; at the same time, because the reactor is a high-temperature space, the pole shoe has a cooling device, and the temperature is relatively low. The solvent vapor is easy to liquefy on the pole shoe, accelerate the failure of the magnetic liquid, and cause the sealing failure. Existing magnetic liquid sealing device, such as a magnetic liquid rotary sealing device published by Application Publication No. CN102182830 A, is provided with a labyrinth spiral sealing groove on the inner hole of the end cover. This design...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/43F16J15/447
CPCF16J15/43F16J15/447
Inventor 李德才喻峻
Owner BEIJING JIAOTONG UNIV
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