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Ultrahigh vacuum magnetic fluid seal transmission device

A magnetic fluid sealing and ultra-high vacuum technology, which is applied to the sealing of engines, engine components, mechanical equipment, etc., can solve the problems of easy pollution of vacuum environment and easy failure of sealing rings, and achieve long-term reliable sealing and pumping speed Fast, satisfying the effect of vacuum

Inactive Publication Date: 2015-09-30
VIC FERROFLUIDICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the above problems, the present invention provides a magnetic fluid sealing transmission device for ultra-high vacuum, so as to solve the problems that the sealing rings in the current magnetic fluid sealing transmission device are prone to failure and the vacuum environment is easy to be polluted

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  • Ultrahigh vacuum magnetic fluid seal transmission device
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  • Ultrahigh vacuum magnetic fluid seal transmission device

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] The first ultra-high vacuum magnetic fluid seal transmission device provided by the embodiment of the present application is as follows: image 3 shown in image 3 In the figure, the left side represents the ultra-high vacuum environment side, and the right side represents the atmospheric environment side. The transmission device includes a housing, a sealing assembly and a bearing, wherein the sealing assembly includes a main shaft, a permanent magnet,...

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Abstract

The invention discloses an ultrahigh vacuum magnetic fluid seal transmission device. The ultrahigh vacuum magnetic fluid seal transmission device comprises a shell, a seal assembly and bearings; the seal assembly comprises a main shaft, a permanent magnet, a first magnetic pole, a second magnetic pole and magnetic fluid, wherein the first magnetic pole and the second magnetic pole are arranged at the two sides of the permanent magnet, the magnetic fluid is arranged between the main shaft and the first magnetic pole and / or the second magnetic pole, and the seal assembly is arranged between the ultrahigh vacuum side and all the bearings; a first seal type cavity is arranged on the contact surface between the first magnetic pole and a flange of the shell, a first metal sealing gasket is arranged in the first seal type cavity, and after the first metal sealing gasket is compressed to be deformed by the axial force between the flange and the first magnetic pole, the flange and the first magnetic pole are sealed. The ultrahigh vacuum magnetic fluid seal transmission device has the advantages of being stable in seal, high in limiting vacuum, low in leak rate, low in gas permeability, large in pumping rate and free of vacuum pollution.

Description

technical field [0001] The invention relates to the technical field of magnetic fluid sealing, in particular to a magnetic fluid sealing transmission device for ultra-high vacuum. Background technique [0002] Ferrofluid sealing technology was developed after the emergence of a new functional material called ferrofluid. In the early 1960s, the National Aeronautics and Space Administration developed ferrofluid in order to solve the problem of vacuum sealing of space suits and the replenishment of liquid fuel in the state of weightlessness in space. This functional material, which appeared as an additional result of American aerospace research at that time, was gradually found to have many applications, such as the recovery of precious metals in mining and metallurgy, magnetic fluid lubrication and grinding in machinery manufacturing, and the recent popular biological Many very important scientific research achievements and industrial practical value have been obtained in bio...

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Application Information

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IPC IPC(8): F16J15/43
CPCF16J15/43
Inventor 言继春王功发
Owner VIC FERROFLUIDICS
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