CN202137030U - Coal mill draw bar sealing device - Google Patents
Coal mill draw bar sealing device Download PDFInfo
- Publication number
- CN202137030U CN202137030U CN201120158820U CN201120158820U CN202137030U CN 202137030 U CN202137030 U CN 202137030U CN 201120158820 U CN201120158820 U CN 201120158820U CN 201120158820 U CN201120158820 U CN 201120158820U CN 202137030 U CN202137030 U CN 202137030U
- Authority
- CN
- China
- Prior art keywords
- draw bar
- pull bar
- seal
- coal mill
- sealing
- 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 - Lifetime
Links
Images
Landscapes
- Crushing And Grinding (AREA)
Abstract
The utility model relates to a device for preventing leakage of a coal mill draw bar, in particular to a coal mill draw bar sealing device which comprises an upper seal and a lower seal surrounding the draw bar, and is characterized in that the upper seal comprises a sliding sleeve sliding a sealing cassette; the sliding sleeve is externally sheathed with an outer sleeve moving synchronously with the draw bar; the lower seal comprises a rubber air bag with the upper part arranged at the lower side of an enclosure, and the draw bar penetrates through the bottom of the rubber air bag; and the draw bar is fixedly sealed at the bottom of the rubber air bag by a fixing device. Therefore, the coal mill draw bar sealing device ahs a simple structure and can effectively play the role of sealing.
Description
(1) technical field
The utility model relates to the device that a kind of coal pulverizer pull bar is revealed, particularly a kind of coal pulverizer pull rod seal device.
(2) background technology
The pull bar of coal pulverizer should move up and down and also want horizontal jitter, and sealing is difficulty comparatively.Now the coal pulverizer pull bar seals at powder phenomenon of leaking out is more, the dust pollution of leakage environment, bigger leakage also causes pulverizer capacity to descend, and has to stop the mill processing.Existing sealing device is the slide block slipper seal for top seal mostly, and lower seal is the packing slipper seal.Pull bar moves up and down in slide block, causes the gap friction of slide block and pull bar to increase, and bigger gap causes sealing wind lost efficacy, and dust, bushel iron piece etc. drop to lower seal along the gap after the seal failure.After the packing of lower seal and sliding sealing surface are blocked by foreign matters such as dust, bushel iron pieces, the inefficacy that is worn very soon such as packing, a large amount of dust, particle etc. spill along pull bar.After the seal failure, dust from flying, sealing wind leaks, and has not only polluted environment, has also wasted the sealing air quantity, causes energy waste, is badly in need of solving.
(3) summary of the invention
The utility model is in order to remedy the deficiency of prior art, and a kind of coal pulverizer pull rod seal device of simple in structure, good seal performance is provided.
The utility model is realized through following technical scheme:
A kind of coal pulverizer pull rod seal device comprises the top seal and the lower seal of surrounding pull bar, it is characterized in that: said top seal comprises the sliding sleeve of horizontal slip on the sealing deck; Said sliding sleeve is with the outer sleeve that is synchronized with the movement with pull bar outward; Said lower seal comprises that top is installed in the rubber pneumatic bag of casing downside, and pull bar passes the rubber pneumatic bag bottom; Said pull bar is through fixture fixing seal rubber pneumatic bag bottom.
Said outer sleeve is pressed on the frame in the pull bar top through bolt; Said fixture is a clip.
The beneficial effect of the utility model is: simple in structure, top seal adopts the nestable mode of inside and outside sleeve to avoid foreign material to get into, and when pull bar moved up and down, interior overcoat was not deviate from, and during the pull bar horizontal jitter, adopts the slide block screens to move horizontally; Pull bar is all accessible motions of ability up and down in air bag, and air bag seals up pull bar, can effectively prevent the leakage at pull bar place.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing 1 is the structural representation of the utility model;
Among the figure, 1 pull bar, 2 sealing decks, 3 sliding sleeves, 4 outer sleeves, 5 casings, 6 rubber pneumatic bags, 7 clips.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the utility model.This embodiment comprises the top seal and the lower seal of surrounding pull bar 1, it is characterized in that: said top seal comprises the sliding sleeve 3 of horizontal slip on sealing deck 2; The said sliding sleeve 3 outer outer sleeves 4 that are synchronized with the movement with pull bar 1 that are with; Said lower seal comprises that top is installed in the rubber pneumatic bag 6 of casing 5 downsides, and pull bar 1 passes rubber pneumatic bag 6 bottoms; Said pull bar 1 is through fixture fixing seal rubber pneumatic bag 6 bottoms; Said outer sleeve 4 is pressed on the frame in pull bar 1 top through bolt; Said fixture is a clip 7.
Adopt the coal pulverizer pull rod seal device of the utility model, when pull bar 1 moves up and down, on only seal outer sleeve 4 to be enclosed within sliding sleeve 3 outer up and down, the lower seal place, rubber pneumatic bag 6 is followed the elastic movement that pull bar 1 is done lower compression or extension; When pull bar 1 horizontal jitter, the outer sleeve 4 of last sealing drives sliding sleeve 3 horizontal slips; The lower seal place, pull bar 1 drives rubber pneumatic bag 6 and does the horizontal flexibility stretching routine, and whole motion is simple, has stopped leakage fully, has practiced thrift the energy.
Claims (3)
1. a coal pulverizer pull rod seal device comprises the top seal and the lower seal of surrounding pull bar (1), it is characterized in that: said top seal comprises the sliding sleeve (3) of horizontal slip on sealing deck (2); The outer outer sleeve (4) that is synchronized with the movement with pull bar (1) that is with of said sliding sleeve (3); Said lower seal comprises that top is installed in the rubber pneumatic bag (6) of casing (5) downside, and pull bar (1) passes rubber pneumatic bag (6) bottom; Said pull bar (1) is through fixture fixing seal rubber pneumatic bag (6) bottom.
2. coal pulverizer pull rod seal device according to claim 1 is characterized in that: said outer sleeve (4) is pressed on the frame in pull bar (1) top through bolt.
3. coal pulverizer pull rod seal device according to claim 1 is characterized in that: said fixture is clip (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120158820U CN202137030U (en) | 2011-05-18 | 2011-05-18 | Coal mill draw bar sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120158820U CN202137030U (en) | 2011-05-18 | 2011-05-18 | Coal mill draw bar sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202137030U true CN202137030U (en) | 2012-02-08 |
Family
ID=45548109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120158820U Expired - Lifetime CN202137030U (en) | 2011-05-18 | 2011-05-18 | Coal mill draw bar sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202137030U (en) |
-
2011
- 2011-05-18 CN CN201120158820U patent/CN202137030U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203512132U (en) | Bag feeding machine clamp | |
| CN103657846B (en) | The moveable bar magnet of a kind of magnet and apply its deironing apparatus | |
| CN203906802U (en) | Main shaft sealing structure of plastic high-speed mixing machine | |
| CN206552597U (en) | A kind of direct impact type pneumatic hammer | |
| CN204211180U (en) | A kind of bagged cement entrucking dust pelletizing system | |
| CN106185532A (en) | Buffer of elevator | |
| CN103754425A (en) | Bagging mechanism capable of preventing flying powder | |
| CN102935943A (en) | Air chute | |
| CN202137030U (en) | Coal mill draw bar sealing device | |
| CN206353082U (en) | A kind of safety belt locking performance test testing stand buffer unit | |
| CN209193121U (en) | A kind of dry powder material Anti-powder-leakage frame head apparatus in bulk | |
| CN203048168U (en) | Air chute | |
| CN202765878U (en) | Bar valve material leakage preventing device | |
| CN201941990U (en) | Vacuumizing packing device | |
| CN108584469A (en) | A kind of dry powder material Anti-powder-leakage frame head apparatus in bulk | |
| CN208666436U (en) | A kind of bearing totally sealed deflector chute of environmental protection | |
| CN102060112B (en) | Vacuum packaging device | |
| CN202429562U (en) | Non-blockage deformed coal bunker | |
| CN206013057U (en) | A kind of Medicated cigarette printing packaging machine cigarette rubber coating spring bumper | |
| CN103075570B (en) | Valve buffer | |
| CN202646223U (en) | Air cylinder with anti-adhesion sealed structure | |
| CN204871772U (en) | Bag framing mechanism of heat -seal system bag machine | |
| CN202743832U (en) | Pallet cigarette parking device | |
| CN203450720U (en) | Dual-sealed guide chute | |
| CN204453683U (en) | A kind of Paternoster elevator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120208 |