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Low-temperature-resistance and compact-type magnetofluid sealing device

A magnetic fluid sealing and compact technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of uncompact structure design, stuck sealing device, poor assembly efficiency, etc., and achieve the overall occupied space and shaft. To the effect of compact installation, simplified assembly difficulty and compact structure design

Pending Publication Date: 2018-08-07
杭州奔博科技有限公司
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Problems solved by technology

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a magnetic fluid sealing device in which the ferrofluid will not freeze, so as to solve the problem of increased resistance at low temperature of the prior art magnetic fluid sealing device, the sealing device is stuck and the product is deformed , The structural design is not compact, the installation is inconvenient, and the assembly efficiency is poor

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  • Low-temperature-resistance and compact-type magnetofluid sealing device

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Embodiment 1

[0022] Referring to the accompanying drawings, the specific technical scheme of the present invention is as follows: a low temperature resistant compact magnetic fluid sealing device, comprising a boss-shaped disc 2 and a thin disc-shaped rotating shaft 1, the disc 2 and the rotating shaft 1 are coaxially arranged and the two ends are aligned, and the rotating shaft 1 and A bearing 3 and a sealing ring-shaped magnetic fluid sealing structure 4 are arranged between the discs 2 . The magnetic fluid sealing structure 4 includes a magnetic fluid and a magnetic pole. The magnetic fluid sealing structure 4 is provided with a heater for heating the magnetic fluid.

[0023] The heater is a pure resistance type electric heating wire or electric heating sheet or electric heating plate. Other heaters can also be used, such as the same structure as the air conditioner heater, but miniaturized. As long as it can meet the requirements of heating the magnetic fluid and at the same time meet ...

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Abstract

The invention discloses a low-temperature-resistance and compact-type magnetofluid sealing device. The low-temperature-resistance and compact-type magnetofluid sealing device comprises a boss-shaped disc and a thin-disc-shaped rotary shaft, the disc is coaxial to the rotary shaft, the two ends of the disc are flush with the two ends of the rotary shaft, a bearing and an annular magnetofluid sealing structure which achieves the sealing effect are arranged between the rotary shaft and the disc, and the magnetofluid sealing structure comprises magnetic liquid and a magnetic pole, and is providedwith a heater used for heating the magnetic liquid. The invention aims at providing the low-temperature-resistance and compact-type magnetofluid sealing device which can guarantee that the magnetic liquid cannot get frozen, and the problems in the prior art are solved that the magnetofluid sealing device is under large resistance at low temperature, gets stuck, causes product deformation, and is not compact in structural design, inconvenient to install, and low in assembling efficiency.

Description

technical field [0001] The invention relates to the technical field of magnetic or magnetic fluid sealing, in particular to a low temperature resistant compact magnetic fluid sealing device. Background technique [0002] The magnetic fluid sealing device has excellent sealing performance, but an obvious defect of the magnetic fluid sealing device is that at low temperature, due to the limitation of the magnetic fluid performance, the resistance of the magnetic sealing device will increase, resulting in the sealing device stuck and forced to start. It will cause product deformation. Therefore, it is necessary to develop a magnetic fluid sealing device that can be used at low temperature, so that it can meet the requirements of aircraft or other instruments and equipment that need to work in a harsh environment with lower temperature. At the same time, the magnetic fluid sealing device in the prior art also has the problems that the structure is not compact enough, the install...

Claims

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Application Information

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IPC IPC(8): F16J15/43
CPCF16J15/43
Inventor 林长碧张松华雷世友
Owner 杭州奔博科技有限公司
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