High-performance dustproof mechanical sealing structure

A mechanical seal, high-performance technology, used in engine seals, mechanical equipment, electromechanical devices, etc., can solve the problems of easy grease leakage, dust entry, bearing wear, etc., and achieve good sealing effect and good sealing performance.

Active Publication Date: 2018-11-02
ANHUI NANFANG CHEM PUMP IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Nowadays, the space inside the bearings of many motors is relatively small. During use, the lower end of the dust cover of the bearings is often not tightly sealed, causing dust to enter the inside of the bearings, and the grease inside the bearings is also easy to leak out. Use will cause bearing wear

Method used

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  • High-performance dustproof mechanical sealing structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] see figure 1 , in an embodiment of the present invention, a high-performance dust-proof mechanical seal structure, including a rotor 1 passing through a gear box 3, a bearing 2, a tensioning sleeve 4 and an outer end cover 6, and the gear box 3 is in the corresponding position of the rotor 1 An outer end cover 6 is installed at the position where it passes through, and the outer end cover 6 is fixed on the gear box 3 by a plurality of fastening screws 7, and a bearing 2 is installed between the inner wall of the gear box 3 and the rotor 1, where The outer end cover 6 has a dustproof function, and in order to further improve its dustproof performance, the outer cover of the rotor 1 is provided with a tensioning sleeve 4, in order not to affect the normal rotation of the rotor 1, the tensioning sleeve 4 and the rotor 1 are clearance fit, the outer circumference of the tensioning bushing 4 is provided with a circle of steps 11, the steps 11 are fixedly connected with the s...

Embodiment 2

[0018] see figure 1 , on the basis of Embodiment 1, in order to further improve the dustproof performance, this embodiment has made the following improvements, specifically:

[0019] (1) The bottom of the outer end cover 6 is filled with sealing glue between the tightening shaft sleeves 4. Although the sealing performance of the sealing glue is affected under high vibration and high heat conditions, it can also reduce the penetration into the outer end. The amount of dust inside the cover 6.

[0020] (2) The seal ring one 5 is a lip seal ring, and its cross section is a V-shaped surface 9, and the seal ring one 5 is enclosed with the tensioning shaft sleeve 4, the outer end cover 6 and the side wall of the gear box 3 to form a sealing ring. The structure of the chamber has a good sealing effect and no contact friction. It has the advantages of both contact sealing and non-contact sealing, and has good sealing performance.

[0021] (3) A sealing ring 2 10 is installed at the ...

Embodiment 3

[0023] see figure 1 , on the basis of Embodiment 1, this embodiment also has a dustproof cover 13 fixed on the outside of the gearbox 3, and one end of the dustproof cover 13 is fixed on the edge of the gearbox 3 by a plurality of screws 12 to prevent The other end of the dust cover 13 extends obliquely to the outside of the outer end cover 6, and the fastening screw 7 is encapsulated inside, which can greatly reduce the entry of dust or impurities into the outer end cover 6.

[0024] Combining with Examples 1-3, the working principle of the present invention is described: looking inward from the outside of the gear box 3, that is, looking from left to right, when external dust enters the outer end cover 6, it will first be affected by the dust cover 13 And the blocking of the outer end cover 6, even if a very small amount of dust can enter the outer end cover 6, it will stay on the side wall composed of the sealing ring 5 and the tightening sleeve 4, the outer end cover 6 and...

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Abstract

The invention discloses a high-performance dustproof mechanical sealing structure. The high-performance dustproof mechanical sealing structure comprises a rotor penetrating through a gear box, a bearing, a straining shaft sleeve and an outer end cover, wherein the outer end cover is installed on a position, through which the rotor penetrates, of the gear box, the outer end cover is fixed on the gear box by virtue of a plurality of fastening screws, the bearing is installed between the inner wall of the gear box and the rotor, the straining shaft sleeve sleeves the rotor, the straining shaft sleeve is in clearance fit with the rotor, and the outer circumference of the straining shaft sleeve is provided with a circle of steps. The high-performance dustproof mechanical sealing structure has the beneficial effects that when external dust enters the outer end cover, the dust is firstly prevented by a dustproof cover and the outer end cover, even when little dust can enter the outer end cover, the dust can remain in a sealed chamber formed by encircling a sealed ring l, the straining shaft sleeve, the outer end cover and the side wall of the gear box, the dust cannot further enter the sealing structure, the sealing effect is good, no contact friction is produced, and the high-performance dustproof mechanical sealing structure integrates the advantages of the contact sealing and noncontact sealing, and has good sealing performance.

Description

technical field [0001] The invention relates to a dustproof sealing structure, in particular to a high-performance dustproof mechanical sealing structure. Background technique [0002] With the continuous development of the domestic economy and the continuous improvement of national living standards, the degree of industrial automation of many domestic industrial and mining enterprises has been further improved, and sealing products play an important role in industrial automation. The quality of sealing products depends on the fluid power transmission in industrial automation. plays a key role. Especially in the national major equipment related to the national economy and the people's livelihood, the stable performance, reliable quality and tolerance of various fluid media of sealing products are very important. [0003] Nowadays, the space inside the bearings of many motors is relatively small. During use, the lower end of the dust cover of the bearings is often not tightl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C35/04F16J15/3204H02K5/10
CPCF16C35/04F16J15/3204H02K5/10
Inventor 秦晓华潘凤建潘耀东
Owner ANHUI NANFANG CHEM PUMP IND
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