Compact magnetofluid sealing transmission device

A magnetic fluid sealing and transmission technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of shortened length and high cost of cross roller bearings, and achieve the effect of shortened length, simplified structure and the purpose of sealing

Pending Publication Date: 2022-05-31
HANGZHOU DAHE THERMO MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the problem that the length of the magnetic fluid seal transmission device in the prior art is limited, and the cost of using a shorter cross roller bearing is higher

Method used

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  • Compact magnetofluid sealing transmission device
  • Compact magnetofluid sealing transmission device
  • Compact magnetofluid sealing transmission device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like figure 1 , 2 As shown in the figure, a compact magnetic fluid seal transmission device includes a cantilevered seal assembly disposed between the main shaft and the casing, the main shaft is also sleeved with a bearing, and the cantilevered seal assembly is radially disposed on the Bearings on one side. The cantilevered seal assembly includes a magnetic block, and a first magnetic pole and a second magnetic pole are arranged on both sides of the magnetic block in the axial direction; the magnetic pole seal ring is arranged on the side of the first magnetic pole and the second magnetic pole close to the bearing. , the first magnetic pole and the second magnetic pole are provided with magnetic fluid for filling the gap on the side away from the bearing. In this application, the magnetic fluid adopts colloidal magnetic fluid.

[0028]The cantilevered seal assembly can be radially arranged on the outside or inside of the bearing. No matter which side of the bearing ...

Embodiment 2

[0033] like image 3 As shown, the difference from Embodiment 1 is that in this embodiment, the cantilevered seal assembly is radially disposed inside the bearing, a shaft sleeve is disposed between the cantilevered seal assembly and the main shaft, and the outside of the shaft sleeve Sealing teeth 3-16 are arranged along the axial direction, and the magnetic fluid is filled in the tooth grooves of the sealing teeth. In this structure, a casing 3-2, a sealing assembly and a bearing 3-7 are included; the sealing assembly includes a main shaft 3-1, a magnetic block 3-4, a first magnetic pole 3-3 disposed on both sides of the magnetic block 3-4, and The second magnetic pole 3-5, the magnetic fluid 3-6 arranged between the main shaft sleeve 3-14 and the matching gap between the first magnetic pole 3-3 and the second magnetic pole 3-5; the sealing assembly is located between the casing 3-2 and the main shaft shaft Between the sleeves 3-14, the magnetic fluid seal transmission devi...

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PUM

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Abstract

The invention discloses a compact magnetic fluid sealing transmission device which comprises a cantilever type sealing assembly arranged between a main shaft and a shell, the main shaft is further sleeved with a bearing, and the cantilever type sealing assembly is arranged on the single side of the bearing in the radial direction. The length of the sealing transmission device is shortened to the maximum extent in the mode that the cantilever type sealing assemblies and the bearings are arranged in the radial direction, and the structure is simplified; compared with a traditional sealing structure, the length of the magnetofluid sealing transmission device is remarkably shortened, meanwhile, the radial space is ingeniously utilized, the overall magnetofluid sealing structure is more compact, the high cost generated by adopting a crossed roller bearing can be reduced, the production cost is effectively reduced, and the cantilever type sealing assembly is adopted to replace the traditional sealing structure.

Description

technical field [0001] The invention relates to the technical field of magnetic fluid sealing, in particular to a compact magnetic fluid sealing transmission device. Background technique [0002] Magnetic fluid sealing transmission device is widely used in semiconductor, optical fiber, medical, artificial satellite and other equipment involving vacuum technology. Spend. Its core part is magnetic fluid, and the function of magnetic fluid in the magnetic fluid sealing transmission device is equivalent to the liquid sealing ring, which can play the effect of dynamic sealing. [0003] The magnetic fluid seal transmission device includes a housing, a seal assembly and a bearing; the magnetic seal assembly includes a main shaft, a magnetic block, a magnetic pole and a magnetic pole, a magnetic fluid (also called a magnetic fluid), and the magnetic block is located between the magnetic pole and the magnetic pole. The magnetic pole matching part is processed with rectangular or tr...

Claims

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Application Information

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IPC IPC(8): F16J15/43
CPCF16J15/43
Inventor 雷林光洪婧
Owner HANGZHOU DAHE THERMO MAGNETICS CO LTD
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