CN203972038U - A kind of medium-speed pulverizer pull rod seal device - Google Patents
A kind of medium-speed pulverizer pull rod seal device Download PDFInfo
- Publication number
- CN203972038U CN203972038U CN201420244468.0U CN201420244468U CN203972038U CN 203972038 U CN203972038 U CN 203972038U CN 201420244468 U CN201420244468 U CN 201420244468U CN 203972038 U CN203972038 U CN 203972038U
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- China
- Prior art keywords
- oscillating bearing
- sealing drum
- sealing
- pull rod
- rod seal
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- Expired - Fee Related
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Abstract
A kind of medium-speed pulverizer pull rod seal device, for the sealing between pull bar and support body, comprise sealing drum, be arranged on sealing drum upper end oscillating bearing, be arranged on the oscillating bearing of sealing drum lower end, the improvement of doing is: sealing drum is made up of the urceolus being slidably matched and inner core, and oscillating bearing is installed at the two ends that inside and outside cylinder fits in after one.Good effect of the present utility model is: the stretching structure of the inside and outside slip intussusception by sealing drum, in the case of keep this to install original length and maintain the basic structure of middle support body constant, can meet the needs of the stroke that drag link mechanism is larger, avoided that sliding axially of little contact-making surface between sealing device upper end oscillating bearing sphere and draw-bar guide sleeve cause compared with quick-wearing, ensure the normal stable operation of coal pulverizer.
Description
Technical field
The utility model belongs to disintegrating apparatus technical field, is specifically related to the pull rod seal device of the wheeled coal pulverizer of middling speed.
Background technology
For the wheeled coal-grinding of middling speed of thermal power plant, chemical plant or steel plant, the pressure of milling is delivered on grinding roller by drag link mechanism, loading frame, finally realizes grinding roller the raw coal on mill is milled.The coal dust of milling out is delivered in boiler furnace or Pulverized Coal Bin through separator by a hot blast.For preventing that the coal dust that adds a heat air delivery in grinding roller chamber from spilling mill from pull bar and body gap, between pull bar and body, establish by sealing drum, be arranged on the sealing device that the oscillating bearing at sealing drum two ends forms.And introduce sliding surface gap between sealing air sealing oscillating bearing and draw-bar guide sleeve with support body therefrom.Because existing lifting to fluctuate, coal pulverizer grinding roller in service has the distance of decline for satisfied and mill parts roller shell and the rear grinding roller roller shell of millstone sheet wearing and tearing and millstone sheet.Cause the link of loading frame and pull bar to swing up and down, form moving up and down of pull bar.In prior art, pull rod seal device adapts to pull bar with sliding axially between the oscillating bearing sphere of sleeve upper end and draw-bar guide sleeve and moves up and down.This kind of mode exists stroke short, easy to wear, and sealing property is not lasting.
Summary of the invention
The purpose of this utility model is to provide a kind of medium-speed pulverizer pull rod seal device, for the sealing between pull bar and support body, overcomes existing sealing device above shortcomings.
Sealing device of the present utility model comprises sealing drum, be arranged on the oscillating bearing of sealing drum upper end, be arranged on the oscillating bearing of sealing drum lower end, the improvement of doing is: sealing drum is made up of the urceolus being slidably matched and inner core, and oscillating bearing is installed at the two ends that inside and outside cylinder fits in after one.
Good effect of the present utility model is: the stretching structure of the inside and outside slip intussusception by sealing drum, in the case of keep this to install original length and maintain the basic structure of middle support body constant, can meet the needs of the stroke that drag link mechanism is larger, avoided that sliding axially of little contact-making surface between sealing device upper end oscillating bearing sphere and draw-bar guide sleeve cause compared with quick-wearing, ensure the normal stable operation of coal pulverizer.
brief description of the drawings.
Fig. 1 is the utility model pull rod seal device structure chart.
Fig. 2 is the installation diagram of the utility model in equipment.
Detailed description of the invention
Consult Fig. 1, sealing device of the present utility model comprises sealing drum, be arranged on the oscillating bearing 1-1 of sealing drum upper end, be arranged on the oscillating bearing 1-4 of sealing drum lower end.Sealing drum is made up of the urceolus 1-3 being slidably matched and inner core 1-2, and oscillating bearing 1-1,1-4 are installed in the two ends that inside and outside cylinder fits in after one.
Consult Fig. 2, the oscillating bearing of sealing device of the present utility model 1 upper end is connected in pull bar upper guide bush 2, and the oscillating bearing of lower end is assemblied under pull bar in guide pin bushing 5, and lower guide pin bushing connects sealing air pipe 6.The lower end connecting fluid cylinder pressure of pull bar 4, the upper end of pull bar 4 connects loading frame 3.
Claims (1)
1. a medium-speed pulverizer pull rod seal device, comprise sealing drum, be arranged on sealing drum upper end oscillating bearing, be arranged on the oscillating bearing of sealing drum lower end, it is characterized in that: sealing drum is made up of the urceolus being slidably matched and inner core, oscillating bearing is installed at the two ends that inside and outside cylinder fits in after one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244468.0U CN203972038U (en) | 2014-05-14 | 2014-05-14 | A kind of medium-speed pulverizer pull rod seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244468.0U CN203972038U (en) | 2014-05-14 | 2014-05-14 | A kind of medium-speed pulverizer pull rod seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203972038U true CN203972038U (en) | 2014-12-03 |
Family
ID=51969517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420244468.0U Expired - Fee Related CN203972038U (en) | 2014-05-14 | 2014-05-14 | A kind of medium-speed pulverizer pull rod seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203972038U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999208A (en) * | 2018-01-08 | 2018-05-08 | 安徽齐盈电力设备科技有限公司 | A kind of coal mill draw bar sealing device |
| CN113958713A (en) * | 2021-10-29 | 2022-01-21 | 华能秦煤瑞金发电有限责任公司 | Hydraulic pull rod sealing device of medium-speed coal mill |
-
2014
- 2014-05-14 CN CN201420244468.0U patent/CN203972038U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999208A (en) * | 2018-01-08 | 2018-05-08 | 安徽齐盈电力设备科技有限公司 | A kind of coal mill draw bar sealing device |
| CN113958713A (en) * | 2021-10-29 | 2022-01-21 | 华能秦煤瑞金发电有限责任公司 | Hydraulic pull rod sealing device of medium-speed coal mill |
| CN113958713B (en) * | 2021-10-29 | 2023-10-10 | 华能秦煤瑞金发电有限责任公司 | Hydraulic pull rod sealing device of medium-speed coal mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 3388 century street, Changchun Economic Development Zone, Jilin Province, Jilin Patentee after: POWERCHINA CHANGCHUN GENERATING EQUIPMENT Group Ltd. Address before: Two district Huairenlu 130031 Jilin province Changchun No. 1 Patentee before: Changchun Power Generation Equipment Plant |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 |