Assembling method for seal assembly in magnetic liquid seal device

A technology of sealing components and sealing devices, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve problems such as difficult cleaning, affecting the working performance of sealing components, and difficult cleaning of sealing components, so as to achieve convenient cleaning and shorten cleaning time, easy assembly effect

Inactive Publication Date: 2007-10-10
BEIJING JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

Since the magnetized NdFeB ring tightly adsorbs iron filings and other magnetic substances produced during the grinding process on the sealing assembly, it makes cleaning of the sealing assembly very difficult, and the cleaning time accounts for at least two-thirds of the total assembly time. , and it is not easy to clean, if it is not cleaned, it will affect the working performance of the sealing components

Method used

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  • Assembling method for seal assembly in magnetic liquid seal device

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Embodiment Construction

[0014] The present invention will be further described in conjunction with accompanying drawing:

[0015] A method for assembling a sealing component in a magnetic liquid sealing device, the steps of the method:

[0016] Step 1, apply glue on the joint surface of the lower pole piece 1, NdFeB ring 2, and upper pole piece 3 in sequence, and bond them together to form a sealing assembly, and lock the sealing assembly in the process with gasket 4 and nut 5 on mandrel 6;

[0017] Step 2: Grinding the outer circles of the lower pole piece 1 and the upper pole piece 3 of the seal assembly formed in step 1 on a grinding machine, so that the matching gap between the outer circle and the inner hole of the housing of the magnetic liquid sealing device is 0.02mm to Between 0.03mm.

[0018] Step 3, after grinding, take out the process mandrel 6, gasket 4 and nut 5, and use acetone or gasoline to clean the sealing assembly formed by the lower pole piece 1, the upper pole piece 3 and the ...

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Abstract

A method for assembling seal component in seal device of magnetic liquid includes binding bottom pole shoe and un-magnetized R b Fe B as well as top pole shoe together to form seal component, locking prepared seal component on process spindle, grinding external circles two said pole shoes, washing ground seal component, magnetizing washed seal component, placing magnetized seal component in shell internal hole on seal device of magnetic liquid type and injecting magnetic liquid in.

Description

technical field [0001] The invention relates to an assembly method of a sealing component in a sealing device, in particular, it is suitable for assembling the sealing component in a magnetic liquid sealing device. Background technique [0002] At present, there are two commonly used structures of magnetic liquid sealing components: one is a sealing structure of one NdFeB ring and two pole pieces, and the other is a sealing structure of multiple NdFeB rings and multiple pole pieces. In order to ensure the coaxiality of the outer circles of multiple pole pieces, traditionally, firstly, the NdFeB ring is fixed in the magnetizing coil, and then the magnetizing coil is placed on the magnetizing machine for conventional magnetization. The maximum saturation magnetization of the material; secondly, install the pole piece and the NdFeB ring on the mandrel in sequence, and apply glue on the joint surface of the pole piece and the NdFeB ring to make the pole piece and the NdFeB ring ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/43
Inventor 李德才王淑珍
Owner BEIJING JIAOTONG UNIV
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