CN205371631U - Coal pulverizer pull rod sealing device - Google Patents
Coal pulverizer pull rod sealing device Download PDFInfo
- Publication number
- CN205371631U CN205371631U CN201620018677.2U CN201620018677U CN205371631U CN 205371631 U CN205371631 U CN 205371631U CN 201620018677 U CN201620018677 U CN 201620018677U CN 205371631 U CN205371631 U CN 205371631U
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- China
- Prior art keywords
- lower seal
- elastomer
- seal
- sealing device
- pull rod
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- Expired - Fee Related
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Abstract
The utility model provides a coal pulverizer pull rod sealing device, includes pull rod, pull rod sealed plenum, upper seal and lower seal, be equipped with the upper seal elastomer in the upper seal, there is the conical surface in the upper seal elastomer outside, and there is the arc groove inboard. Circumferencial direction at the pull rod between last seal shell fixed plate and the last seal shell has appropriate clearance. The utility model discloses simple structure, it is with low costs, effectively solved the easy wearing and tearing between sealed with top seal and lower part of pull rod that current pull rod sealing device exists, solved and leaked whitewashed phenomenon, avoided pollution production site's environment and equipment, solved conflagration hidden danger scheduling problem.
Description
Technical field
This utility model relates to medium-speed pulverizer sealing device technical field, is a kind of pull rod seal device.
Background technology
Medium-speed pulverizer is the main powder manufacturing apparatus of the industries such as current electric power, metallurgy, building materials chemical industry, more extensive particularly in applying in power plant, is the important ingredient of power plant's pulverized coal preparation system.Its main task is will to treat that grind materials grinds to form granular material, it is provided that to boiler plant.Therefore the work quality of medium-speed pulverizer directly affects the safety and economic benefit of whole unit, and pull bar is the important charger of medium-speed pulverizer, and the crux that tie-rod sealing is then medium-speed pulverizer seals position.Pull rod seal device conventional at present includes upper sealing device and lower sealing device, forms annular seal space between top seal and lower seal；During work, there is grazing with its top seal and lower seal in pull bar, causes that gap therebetween is gradually increased mutually.Cause that a large amount of granular materials in coal pulverizer enter in the upper seal of pull bar, the mutual abrasion between aggravation pull bar and upper and lower seal.The gap between upper and lower sealing and pull bar is caused to be gradually increased.Granular material will fall in its annular seal space either directly through this gap.Along with the granular material in annular seal space gets more and more, in the up and down motion process of pull bar, granular material can progress in lower seal again, causes that lower seal is damaged the most at last, and granular material spills from lower seal.And along with the continuous aggravation of lower seal abrasion, leakage powder situation will be further serious.In sum, there is the abrasion between pull bar and top seal and lower seal in existing pull rod seal device, thus causing phenomenon leakage powder easily occur, and then pollutes environment and the equipment of production scene；When serious leakage powder, medium-speed pulverizer is also by forced outage, thus affecting unit generation；And its structure is complicated, maintenance inconvenience, it is unfavorable for equipment reliability service and standby.
Summary of the invention
The purpose of this utility model seeks to solve problem above, a kind of coal mill draw bar sealing device is provided, overcome the deficiency of above-mentioned prior art, can effectively solve between pull bar and top seal and the lower seal that existing pull rod seal device exists easy to wear, thus causing the phenomenon that leakage powder easily occurs, and then pollute environment and the equipment of production scene so that it is the problem that there is disaster hidden-trouble.
The technical solution of the utility model is realized by following measures: a kind of coal mill draw bar sealing device, including pull bar, upper sealing elastomer, upper seal casinghousing, the fixing plate of upper seal casinghousing, tie-rod sealing air compartment, lower seal housing, lower seal elastomer；It is characterized in: upper sealing elastomer is arranged in seal casinghousing, and upper sealing elastomer interior sidewall surface packs tightly the outer side surface of pull bar, and lower seal elastomer is arranged in lower seal housing, and lower seal elastomer interior sidewall surface packs tightly the outer side surface of pull bar.
Further, the disconnected cross section of upper sealing elastomer is for falling " R " font.
Further, upper sealing elastomer interior sidewall surface is provided with on some roads and seals inner arc groove.
Further, the disconnected cross section of lower seal elastomer is " X " font.
Further, lower seal elastomer internal face is provided with the conical surface inside lower seal.
Further, lower seal elastomer internal face is provided with lower seal inner arc groove.
Further, upper seal casinghousing and on be tightly connected between plate and be provided with seal casinghousing ring gap.
Further, lower seal housing ring gap it is provided with between lower seal housing and lower seal elastomer.
This utility model simple in construction, cost is low, efficiently solves between pull bar and top seal and the lower seal that existing pull rod seal device exists easy to wear, solves Lou powder phenomenon, it is to avoid the environment of pollution production scene and equipment, solves the problems such as disaster hidden-trouble.
Accompanying drawing explanation
Fig. 1 is that master of the present utility model looks sectional structure schematic diagram.
Fig. 2 is original structure schematic diagram.
In figure: 1, pull bar；2, upper sealing elastomer；3, upper seal casinghousing；4, the fixing plate of upper seal casinghousing；5, fixing nut；6, plate it is tightly connected on；7, tie-rod sealing air compartment；8, lower seal housing；9, lower seal elastomer；10, lower seal shell flange plate；11, the fixing nut of lower seal；12, bolt it is tightly connected on；13, the upper sealing outside conical surface；14, upper sealing inner arc groove；15, original structure seals；16, original structure is tightly connected bolt；17, original structure lower seal；18, original structure lower seal packing ring；19, the conical surface outside lower seal；20, the conical surface inside lower seal；21, lower seal inner arc groove；22, lower seal end face arc groove；23, upper seal casinghousing ring gap；24, lower seal housing ring gap.
Detailed description of the invention
In this utility model, for the ease of describing, the Butut mode that the description of the relative position relation of each parts is all according to Figure of description is described, as: the position relationship of forward and backward, upper and lower, left and right etc. is based on what the Butut direction of Figure of description was determined.
Below in conjunction with embodiment and accompanying drawing, this utility model is further described:
As shown in Figure 1 and Figure 2, this pull rod seal device is made up of upper sealing, lower seal and tie-rod sealing air compartment.The disconnected cross section of upper sealing is for falling " R " font, including the fixing plate 4 of pull bar 1, upper seal casinghousing 3, upper sealing elastomer 2 and upper sealing, it is internal that upper sealing elastomer 2 is located at seal casinghousing 3, is provided with the sealing outside conical surface 13 and mates with upper seal casinghousing 3 internal face outside upper sealing elastomer 2；Upper sealing elastomer 2 wraps in the outer side surface of pull bar 1, and upper sealing elastomer 2 interior sidewall surface is provided with sealing inner arc groove 14.Upper seal casinghousing 3 is made up of front and back two lobe, is tightly connected bolt 12 from above and is connected as entirety；On be tightly connected between the fixing plate 4 of plate 6 and upper seal casinghousing and be connected by fixing nut 5, upper seal casinghousing 3 and on be tightly connected between plate 6 and be provided with seal casinghousing ring gap 23
Lower seal includes lower seal housing 8, the lower seal elastomer 9 of " X " font and lower seal shell flange plate 10 and forms.Lower seal elastomer 9 is arranged in lower seal housing 8, lower seal elastomer 9 interior sidewall surface is enclosed within the outer side surface of pull bar 1, lower seal elastomer 9 interior sidewall surface is provided with the conical surface 20 inside lower seal, lower seal inner arc groove 21, lower seal end face arc groove 22, lower seal elastomer 9 interior sidewall surface is provided with the conical surface 19 outside lower seal, lower seal elastomer 9 end face is provided with lower seal end face arc groove 22, is provided with lower seal housing ring gap 24 between lower seal housing 8 and lower seal elastomer 9.
Upper seal casinghousing 3 and on be tightly connected between plate 6 and be provided with annular gap 23, and between lower seal housing 8 and lower seal elastomer 9, it is provided with lower seal housing ring gap 24, can ensure that pull bar operationally forward and backward in certain scope, upper and lower, left and right are moved, and reliably seal.
Tie-rod sealing air compartment 7 is between upper sealing, lower seal, have compression air lasting add in tie-rod sealing air compartment 7, its blast is more than the air pressure sealed on this utility model and outside lower seal, and upper sealing elastomer 2 and lower seal elastomer 9 interior sidewall surface all pack tightly the outer side surface of pull bar 1；Thus effectively preventing granular material from coordinating cylinder by upper sealing elastomer 2 and pull bar 1, upper sealing elastomer 2 interior sidewall surface is provided with on some roads and seals inner arc groove 14, lower seal elastomer 9 interior sidewall surface is provided with some roads lower seal inner arc groove 21, thus avoiding granular material to coordinate cylinder by upper sealing elastomer 2 and lower seal elastomer 9 and pull bar 1 further, decrease and wear away between pull bar 1 and upper sealing elastomer 2 and lower seal elastomer 9, extend its service life, and the generation of effective anti-leak-stopping powder phenomenon, and then avoid the pollution to production on-site environment and equipment, reduce disaster hidden-trouble.
Claims (8)
1. a coal mill draw bar sealing device, including pull bar (1), upper sealing elastomer (2), upper seal casinghousing (3), the fixing plate (4) of upper seal casinghousing, tie-rod sealing air compartment (7), lower seal housing (8), lower seal elastomer (9)；It is characterized in that: upper sealing elastomer (2) is arranged in seal casinghousing (3), upper sealing elastomer (2) interior sidewall surface packs tightly the outer side surface of pull bar (1), lower seal elastomer (9) is arranged in lower seal housing (8), and lower seal elastomer (9) interior sidewall surface packs tightly the outer side surface of pull bar (1).
2. a coal mill draw bar sealing device according to claim 1, it is characterised in that: the disconnected cross section of described upper sealing elastomer (2) is for falling " R " font.
3. a coal mill draw bar sealing device according to claim 1 and 2, it is characterised in that: described upper sealing elastomer (2) interior sidewall surface is provided with on some roads and seals inner arc groove (14).
4. a coal mill draw bar sealing device according to claim 1, it is characterised in that: the disconnected cross section of described lower seal elastomer (9) is " X " font.
5. a coal mill draw bar sealing device according to claim 1, it is characterised in that: described lower seal elastomer (9) internal face is provided with the conical surface inside lower seal (20).
6. a coal mill draw bar sealing device according to claim 1, it is characterised in that: described lower seal elastomer (9) internal face is provided with lower seal inner arc groove (21).
7. a coal mill draw bar sealing device according to claim 1, it is characterised in that: described upper seal casinghousing (3) and on be tightly connected between plate (6) and be provided with seal casinghousing ring gap (23).
8. a coal mill draw bar sealing device according to claim 1, it is characterised in that: it is provided with lower seal housing ring gap (24) between described lower seal housing (8) and lower seal elastomer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620018677.2U CN205371631U (en) | 2016-01-07 | 2016-01-07 | Coal pulverizer pull rod sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620018677.2U CN205371631U (en) | 2016-01-07 | 2016-01-07 | Coal pulverizer pull rod sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205371631U true CN205371631U (en) | 2016-07-06 |
Family
ID=56275534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620018677.2U Expired - Fee Related CN205371631U (en) | 2016-01-07 | 2016-01-07 | Coal pulverizer pull rod sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205371631U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382196A (en) * | 2017-08-13 | 2019-02-26 | 大唐临清热电有限公司 | Power plant coal machine tie-rod sealing attachment device |
-
2016
- 2016-01-07 CN CN201620018677.2U patent/CN205371631U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382196A (en) * | 2017-08-13 | 2019-02-26 | 大唐临清热电有限公司 | Power plant coal machine tie-rod sealing attachment device |
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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: 20160706 Termination date: 20220107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |