CN203556444U - Rotation dustproof device for milling roller of medium speed mill - Google Patents
Rotation dustproof device for milling roller of medium speed mill Download PDFInfo
- Publication number
- CN203556444U CN203556444U CN201320628375.3U CN201320628375U CN203556444U CN 203556444 U CN203556444 U CN 203556444U CN 201320628375 U CN201320628375 U CN 201320628375U CN 203556444 U CN203556444 U CN 203556444U
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- China
- Prior art keywords
- hydraulic cylinder
- rotation
- pull bar
- dustproof
- pull rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a rotation dustproof device for a milling roller of a medium speed mill. The rotation dustproof device comprises a pull rod connected with a hydraulic cylinder, wherein hydraulic oil seal is used between the pull rod and the hydraulic cylinder; a dustproof cover covers the pull rod; the upper end of the dustproof cover is fixed on the pull rod through a clamp; the lower end of the dustproof cover is provided with an upper pressing board and a lower pressing board in a clamping manner respectively; the upper pressing board and the lower pressing board are linked through bolts; the lower pressing board is laminated on the end face of the hydraulic cylinder. With the adoption of the rotation dustproof device provided by the utility model, the dustproof problems of the pull rod and the hydraulic cylinder are solved. The rotation dustproof device can rotate on the surface of the hydraulic cylinder, so that the dustproof effect and the rotation effect can be realized.
Description
Technical field
The utility model relates to the dustproof field of medium-speed coal mill roller, specifically belongs to the rotation dust guard of medium-speed coal mill roller.
Background technology
Medium-speed coal mill roller is controlled the lifting of grinding roller by pull bar, hydraulic cylinder.Approximately 5 meters of the length of pull bar, approximately 200 millimeters of upper and lower displacements, pull bar rotation sometimes, because of moving up and down of pull bar, easily brings hydraulic cylinder into dust, causes hydraulic seal to damage, and leakage of oil is fallen to press, and pull bar is controlled function and is lost.
Utility model content
The purpose of this utility model is to provide a kind of rotation dust guard of medium-speed coal mill roller, has solved pull bar, the dustproof problem of hydraulic cylinder, can, in the rotation of hydraulic cylinder surface, reach and can prevent dust and revolvable effect.
The technical solution of the utility model is as follows:
The rotation dust guard of medium-speed coal mill roller, include the pull bar being connected with hydraulic cylinder, hydraulic seal between pull bar and hydraulic cylinder, pull bar outer cover is equipped with dust cover, dust cover upper end is fixed on pull bar by clip, dust cover lower end is gripped with respectively top board, lower platen, between top board and lower platen, is connected with bolt, and lower platen fits in hydraulic cylinder end face.
Between described lower platen and hydraulic cylinder end face, be provided with sealing ring.
The utility model utilizes the deadweight of pressing plate, pressing plate to stop dust cover only can open ripple interior, can not move up and down, and pushes down pull bar upper and lower displacement scope simultaneously.Sealing ring and hydraulic cylinder do not produce upper and lower displacement, can, in the rotation of hydraulic cylinder surface, reach and can prevent dust and revolvable effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Referring to accompanying drawing, the rotation dust guard of medium-speed coal mill roller, include the pull bar 1 being connected with hydraulic cylinder 7, hydraulic seal 8 between pull bar 1 and hydraulic cylinder 7, pull bar 1 outer cover is equipped with dust cover 3, and dust cover 3 upper ends are fixed on pull bar 1 by clip 2, dust cover 3 lower ends are gripped with respectively top board 4, lower platen 9, between top board 4 and lower platen 9, be connected with bolt 5, lower platen 9 fits in hydraulic cylinder 7 end faces, between lower platen 9 and hydraulic cylinder 7 end faces, is provided with sealing ring 6.
Dust cover 3 is that oil resistant rubber is made, and determines the number of ripple number according to pull bar upper and lower displacement amount.
Dust cover 3, adopts segmenting structure, and place, gap installs zipper, and dust cover 3 tops are fixing by clip 2 and pull bar 1, pressing plate 4 for bottom, pressing plate 9, bolt 5.Pressing plate 9 has groove, and fixed seal ring 6 utilizes the deadweight of pressing plate 4, pressing plate 5 to stop dust cover only can open ripple interior, can not move up and down, and pushes down pull bar 1 upper and lower displacement scope simultaneously.
Sealing ring 6 does not produce upper and lower displacement with hydraulic cylinder 7, can, in hydraulic cylinder 7 surface rotations, reach and can prevent dust and revolvable effect.
Pressing plate 4, pressing plate 5 adopt subdivision structure.During installation, pressing plate 4, pressing plate 5, gap intersection in 90 °, compresses by bolt 5, forms whole.
Claims (2)
1. the rotation dust guard of medium-speed coal mill roller, include the pull bar being connected with hydraulic cylinder, it is characterized in that, hydraulic seal between pull bar and hydraulic cylinder, pull bar outer cover is equipped with dust cover, and dust cover upper end is fixed on pull bar by clip, and dust cover lower end is gripped with respectively top board, lower platen, between top board and lower platen, be connected with bolt, lower platen fits in hydraulic cylinder end face.
2. the rotation dust guard of medium-speed coal mill roller according to claim 1, is characterized in that, between described lower platen and hydraulic cylinder end face, is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628375.3U CN203556444U (en) | 2013-10-12 | 2013-10-12 | Rotation dustproof device for milling roller of medium speed mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628375.3U CN203556444U (en) | 2013-10-12 | 2013-10-12 | Rotation dustproof device for milling roller of medium speed mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203556444U true CN203556444U (en) | 2014-04-23 |
Family
ID=50506197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320628375.3U Expired - Fee Related CN203556444U (en) | 2013-10-12 | 2013-10-12 | Rotation dustproof device for milling roller of medium speed mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203556444U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120994A (en) * | 2014-07-16 | 2014-10-29 | 平顶山市铁福来机电设备有限公司 | Drill rod hole sealing device for coal mine punching |
| CN106812949A (en) * | 2017-02-14 | 2017-06-09 | 陕西渤兴电力科技有限公司 | A kind of corrugated pull rod seal device of coal pulverizer |
| CN108547829A (en) * | 2018-06-29 | 2018-09-18 | 神华国华广投（柳州）发电有限责任公司 | A kind of medium-speed pulverizer hydraulic cylinder and accumulator connection structure |
-
2013
- 2013-10-12 CN CN201320628375.3U patent/CN203556444U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120994A (en) * | 2014-07-16 | 2014-10-29 | 平顶山市铁福来机电设备有限公司 | Drill rod hole sealing device for coal mine punching |
| CN106812949A (en) * | 2017-02-14 | 2017-06-09 | 陕西渤兴电力科技有限公司 | A kind of corrugated pull rod seal device of coal pulverizer |
| CN108547829A (en) * | 2018-06-29 | 2018-09-18 | 神华国华广投（柳州）发电有限责任公司 | A kind of medium-speed pulverizer hydraulic cylinder and accumulator connection structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20161012 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |