CN203979412U - Pull rod seal device - Google Patents
Pull rod seal device Download PDFInfo
- Publication number
- CN203979412U CN203979412U CN201420319375.XU CN201420319375U CN203979412U CN 203979412 U CN203979412 U CN 203979412U CN 201420319375 U CN201420319375 U CN 201420319375U CN 203979412 U CN203979412 U CN 203979412U
- Authority
- CN
- China
- Prior art keywords
- sleeve gasket
- seal
- bar body
- outside
- hoop
- 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
Links
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model relates to medium speed grinding seal arrangement technical field, is a kind of pull rod seal device, comprises bar body, sealing air cavity, top seal and lower seal; Top seal comprises slide, pressing plate and upper sleeve gasket, between slide and bar body, be provided with the upper sleeve gasket that inner side is against bar body outside, the upper inner of upper sleeve gasket is intervally distributed with at least two upper seal grooves from top to bottom, and in correspondence, the lower inside of the upper sleeve gasket of seal groove lower position is distributed with spiral around sealing tooth.The utility model reasonable and compact in structure, it is by improving the sealing surface structure of upper sleeve gasket, make positive press seal and upper seal groove and around sealing tooth acting in conjunction, thereby form the multiple obstruction to granular material, prevent that it from entering in sealing air cavity, can effectively avoid granular material to cause wearing and tearing to itself and bar body, extend the working life of each parts, avoid the pollution to production on-site environment and equipment, reduce disaster hidden-trouble.
Description
Technical field
the utility model relates to medium speed grinding seal arrangement technical field, is a kind of pull rod seal device.
Background technique
medium speed grinding is the main powder manufacturing apparatus of the industries such as current electric power, metallurgy, building materials chemical industry, and especially in power plant, application is more extensive, is the important constituent element of power plant's pulverizing system.Its main task is to treat that grind materials grinds to form powdery material, offers boiler equipment.Therefore the work quality of medium speed grinding directly affects the safety and economic benefit of whole unit, and pull bar is the important deceleration loading device of medium speed grinding, and tie-rod sealing is the key sealing position of medium speed grinding.Conventional pull rod seal device comprises top seal and lower seal at present, forms its Seal cage between top seal and lower seal; The local coated pull rod seal device of medium speed grinding housing, make its top seal will be positioned at medium speed grinding inner chamber, and lower seal will be positioned at medium speed grinding outside.When work, the top of pull bar will seesaw up and down by top seal, and in this process, pull bar top seal and lower seal will be touched mill with the opinion of pull bar, cause its wearing clearance to increase gradually; And a large amount of tiny granular materials in the inner chamber due to medium speed grinding, have been full of, and the pull bar that is arranged in top seal top is directly exposed to the inner chamber of medium speed grinding, granular material will be attached on pull bar and enter in top seal thereupon, thereby aggravate the wearing and tearing between top seal and pull bar.When top seal produces heavy wear distortion, while making the matching gap of itself and pull bar increase to 5 to 8mm, granular material will directly fall in its Seal cage by this matching gap.Along with the granular material in Seal cage is more and more, moving up and down in process of pull bar, granular material can progress in lower seal again, causes the most at last lower seal to be damaged, and granular material spills from lower seal.And along with the continuous aggravation of lower seal wearing and tearing, it will be further serious leaking powder situation.In sum, former pull rod seal device exists between pull bar and top seal and lower seal easy to wear, thereby causes being prone to the Lou phenomenon of powder, and then pollutes environment and the equipment of production scene, makes it have the problem of disaster hidden-trouble; Serious while leaking powder, medium speed grinding is also by forced outage, thereby affects unit generation; And its complex structure, maintenance inconvenience, is unfavorable for equipment reliable operation and standby.
Summary of the invention
the utility model provides a kind of pull rod seal device, overcome the deficiency of above-mentioned prior art, it can effectively solve between pull bar that existing pull rod seal device exists and top seal and lower seal easy to wear, thereby cause being prone to the Lou phenomenon of powder, and then pollute environment and the equipment of production scene, make it have the problem of disaster hidden-trouble.
the technical solution of the utility model realizes by following measures: a kind of pull rod seal device, comprises bar body, sealing air cavity, top seal and lower seal, on the sidewall of sealing air cavity, be fixed with the air intake passage communicating with its inside, there is the pull bar through hole running through up and down at the middle part of sealing air cavity, and bar body is all positioned at the outside of pull bar through hole through pull bar through hole and its two ends, between the upper end of sealing air cavity and bar body, be installed with top seal, top seal comprises slide, pressing plate and upper sleeve gasket, pressing plate is fixedly mounted on the upper end of sealing air cavity, be sleeved on the slide seat in bar body outside in the upper end of sealing air cavity and by pressing plate axial limiting, between slide and bar body, be provided with the upper sleeve gasket that inner side is against bar body outside, the upper inner of upper sleeve gasket is intervally distributed with at least two upper seal grooves from top to bottom, in correspondence, the lower inside of the upper sleeve gasket of seal groove lower position is distributed with spiral around sealing tooth, between the lower end of sealing air cavity and bar body, be installed with lower seal.
the further optimization and/or improvements to above-mentioned model utility technological scheme below:
above-mentionedly also can comprise dust-proof cover, on the bar body of corresponding top seal top position, be installed with dust-proof cover.
it is up-small and down-big bowl-shape that above-mentioned dust-proof cover can be, and dust-proof cover is sleeved on bar body outside, and the top of dust-proof cover and bar body are bolted and are fixedly installed togather.
can there be outer groove in the outside, middle part of above-mentioned slide, and the inner side of pressing plate embeds in outer groove and is Spielpassung between the two; The lower inside of slide has the interior ring platform that is sleeved on bar body outside, and there is inner groove the slide inner side of corresponding interior Huan Tai top position; The lower end outside of upper sleeve gasket is fixed with outer shroud platform, outer shroud platform be embedded in inner groove and its base part seat on interior ring platform; On interior ring platform, circumferentially there is the sealing air passage communicating with sealing air inside cavity, on the upper sleeve gasket of corresponding sealing air channel position, be distributed with the communicating passage communicating with it, in correspondence, on the slide of seal groove position, be distributed with the intercommunicating pore that is communicated with upper seal groove and communicating passage.
above-mentionedly also can comprise upper sealing ring hoop, on the sidewall of upper sleeve gasket, there is upper sleeve gasket opening vertically, the outside of upper sleeve gasket is intervally distributed with at least two upper hoop mounting grooves from top to bottom, upper sealing ring hoop is installed in hoop mounting groove on each, and the inner side of upper sleeve gasket is held in bar body outside by upper sealing ring hoop tightly.
above-mentioned lower seal can comprise lower stationary housing, lower flange and lower sleeve gasket, the lower end of sealing air cavity is fixed with the lower stationary housing that is sleeved on bar body outside, the outside, lower end of lower stationary housing is fixed with installation outer rim, the below that outer rim is installed is installed with the lower flange that is sleeved on bar body outside, is provided with the lower sleeve gasket that inner side is against bar body outside between the lower end of sealing air cavity and lower flange.
the inner side of above-mentioned lower sleeve gasket can be intervally distributed with at least two lower seal groove cavities from top to bottom; On the sidewall of lower sleeve gasket, there is lower sleeve gasket opening vertically, the outside of lower sleeve gasket is intervally distributed with at least two lower hoop mounting grooves from top to bottom, in each lower hoop mounting groove, lower seal hoop is installed, and the inner side of lower sleeve gasket is held in bar body outside by lower seal hoop tightly.
the utility model reasonable and compact in structure, easy to use, it is by improving the sealing surface structure of upper sleeve gasket, make positive press seal and upper seal groove and around sealing tooth acting in conjunction, thereby form the multiple obstruction to granular material, prevent that it from entering in sealing air cavity, can effectively avoid granular material to cause wearing and tearing to itself and bar body; Set up dust-proof cover and in lower sleeve gasket, set up the generation that lower seal groove cavity can further anti-leak-stopping powder phenomenon, extend the working life of each parts, avoid the pollution to production on-site environment and equipment, reduce disaster hidden-trouble.
Accompanying drawing explanation
accompanying drawing 1 is looked sectional structure schematic diagram for the master of the utility model most preferred embodiment.
accompanying drawing 2 is the local structure for amplifying schematic diagram at A place in accompanying drawing 1.
coding in accompanying drawing is respectively: 1 is bar body, and 2 is sealing air cavity, and 3 is air intake passage, 4 is pull bar through hole, and 5 is slide, and 6 is pressing plate, 7 is upper sleeve gasket, and 8 is upper seal groove, and 9 is around sealing tooth, 10 is dust-proof cover, and 11 is outer groove, and 12 is interior ring platform, 13 is inner groove, 14 is outer shroud platform, and 15 is sealing air passage, and 16 is communicating passage, 17 is intercommunicating pore, 18 is upper sealing ring hoop, and 19 is lower stationary housing, and 20 is lower flange, 21 is lower sleeve gasket, 22 for installing outer rim, and 23 is lower seal groove cavity, and 24 is lower seal hoop.
Embodiment
the utility model is not subject to following embodiment's restriction, can determine concrete mode of execution according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is to be all described according to the Butut mode of Figure of description 1, as: the position relationship of forward and backward, upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in accompanying drawing 1,2, this pull rod seal device comprises bar body 1, sealing air cavity 2, top seal and lower seal, on the sidewall of sealing air cavity 2, be fixed with the air intake passage 3 communicating with its inside, there is the pull bar through hole 4 running through up and down at the middle part of sealing air cavity 2, and bar body 1 is all positioned at the outside of pull bar through hole 4 through pull bar through hole 4 and its two ends, between the upper end of sealing air cavity 2 and bar body 1, be installed with top seal, top seal comprises slide 5, pressing plate 6 and upper sleeve gasket 7, pressing plate 6 is fixedly mounted on the upper end of sealing air cavity 2, be sleeved on 5 upper ends in sealing air cavity 2 of slide in bar body 1 outside and pass through pressing plate 6 axial limitings, between slide 5 and bar body 1, be provided with the upper sleeve gasket 7 that inner side is against bar body 1 outside, the upper inner of upper sleeve gasket 7 is intervally distributed with at least two upper seal grooves 8 from top to bottom, in correspondence, the lower inside of the upper sleeve gasket 7 of seal groove 8 lower positions is distributed with spiral around sealing tooth 9, between the lower end of sealing air cavity 2 and bar body 1, be installed with lower seal.In use, can be by air intake passage 3 to the interior injection sealing air of sealing air cavity 2, thereby bar body 1 and top seal and lower seal joint are formed to positive press seal, thereby effectively prevent that granular material from entering in sealing air cavity 2 by top seal and bar body 1; When having a small amount of granular material to enter upper sleeve gasket 7, it will be stored in seal groove 8, can avoid it to act on bar body 1 and unstable wear; Spiral around sealing tooth 9 can fully contact with bar body 1, the granular material that will enter upper sleeve gasket 7 and do not remain in upper seal groove 8 is trapped in the gap around sealing tooth 9, thereby further avoid the effect of granular material to bar body 1, can effectively stop granular material particle and enter in sealing air cavity 2; Can avoid thus granular material to the effect of wearing and tearing between pull bar and top seal and lower seal, extend its working 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.
can according to actual needs, above-mentioned pull rod seal device be made further optimization and/or improvements:
as shown in accompanying drawing 1,2, also comprise dust-proof cover 10, on the bar body 1 of corresponding top seal top position, be installed with dust-proof cover 10.In use, dust-proof cover 10 can block granular material it cannot be adsorbed on and top seal between have on the bar body 1 of relative displacement, prevent that granular material from falling in sealing air cavity 2 by top seal, thereby avoid granular material to the effect of wearing and tearing between pull bar and top seal and lower seal, extend its working life.
as shown in accompanying drawing 1,2, it is up-small and down-big bowl-shape that dust-proof cover 10 is, and dust-proof cover 10 is sleeved on bar body 1 outside, and the top of dust-proof cover 10 and bar body 1 are bolted and are fixedly installed togather.
as shown in accompanying drawing 1,2, there is outer groove 11 in outside, the middle part of slide 5, and the inner side of pressing plate 6 embeds in outer groove 11 and is Spielpassung between the two; The lower inside of slide 5 has the interior ring platform 12 that is sleeved on bar body 1 outside, and there is inner groove 13 slide 5 inner sides of corresponding interior ring platform 12 top positions; The lower end outside of upper sleeve gasket 7 is fixed with outer shroud platform 14, outer shroud platform 14 be embedded in inner groove 13 and its base part seat on interior ring platform 12; On interior ring platform 12, circumferentially there is the sealing air passage 15 communicating with sealing air cavity 2 inside, on the upper sleeve gasket 7 of corresponding sealing air passage 15 positions, be distributed with the communicating passage 16 communicating with it, in correspondence, on the slide 5 of seal groove 8 positions, be distributed with the intercommunicating pore 17 that is communicated with upper seal groove 8 and communicating passage 16.In use, sealing air will enter in sealing air cavity 2 from air intake passage 3, then by sealing air passage 15, communicating passage 16 and intercommunicating pore 17, enter in upper seal groove 8, thereby to forming positive press seal between upper sleeve gasket 7 and bar body 1, thereby the wind and the granular material that effectively prevent from being positioned at medium speed grinding inner chamber enter sealing air cavity 2.
as shown in accompanying drawing 1,2, also comprise upper sealing ring hoop 18, on the sidewall of upper sleeve gasket 7, there is upper sleeve gasket opening vertically, the outside of upper sleeve gasket 7 is intervally distributed with at least two upper hoop mounting grooves from top to bottom, upper sealing ring hoop 18 is installed in hoop mounting groove on each, and the inner side of upper sleeve gasket 7 is held in bar body 1 outside by upper sealing ring hoop 18 tightly.Can make it easy to like this install, and upper sleeve gasket opening can be convenient to adjustment with 18 mating reactions of upper sealing ring hoop, strengthen its sealing effect.
as shown in accompanying drawing 1,2, lower seal comprises lower stationary housing 19, lower flange 20 and lower sleeve gasket 21, the lower end of sealing air cavity 2 is fixed with the lower stationary housing 19 that is sleeved on bar body 1 outside, the outside, lower end of lower stationary housing 19 is fixed with installs outer rim 22, the below that outer rim 22 is installed is installed with the lower flange 20 that is sleeved on bar body 1 outside, is provided with the lower sleeve gasket 21 that inner side is against bar body 1 outside between the lower end of sealing air cavity 2 and lower flange 20.
as shown in accompanying drawing 1,2, the inner side of lower sleeve gasket 21 is intervally distributed with at least two lower seal groove cavities 23 from top to bottom; On the sidewall of lower sleeve gasket 21, there is lower sleeve gasket opening vertically, the outside of lower sleeve gasket 21 is intervally distributed with at least two lower hoop mounting grooves from top to bottom, in each lower hoop mounting groove, lower seal hoop 24 is installed, and the inner side of lower sleeve gasket 21 is held in bar body 1 outside by lower seal hoop 24 tightly.The cutting of granular material that lower seal groove cavity 23 can form entering in sealing air cavity 2 hindered, and it is deposited in lower seal groove cavity 23, guarantees that granular material can not leak, and reduces the pollution to surrounding environment, removes disaster hidden-trouble.
above technical characteristics has formed most preferred embodiment of the present utility model, and it has stronger adaptability and best implementation result, can increase and decrease according to actual needs non-essential technical characteristics, meets the demand of different situations.
Claims (14)
1. a pull rod seal device, is characterized in that comprising bar body, sealing air cavity, top seal and lower seal, on the sidewall of sealing air cavity, be fixed with the air intake passage communicating with its inside, there is the pull bar through hole running through up and down at the middle part of sealing air cavity, and bar body is all positioned at the outside of pull bar through hole through pull bar through hole and its two ends, between the upper end of sealing air cavity and bar body, be installed with top seal, top seal comprises slide, pressing plate and upper sleeve gasket, pressing plate is fixedly mounted on the upper end of sealing air cavity, be sleeved on the slide seat in bar body outside in the upper end of sealing air cavity and by pressing plate axial limiting, between slide and bar body, be provided with the upper sleeve gasket that inner side is against bar body outside, the upper inner of upper sleeve gasket is intervally distributed with at least two upper seal grooves from top to bottom, in correspondence, the lower inside of the upper sleeve gasket of seal groove lower position is distributed with spiral around sealing tooth, between the lower end of sealing air cavity and bar body, be installed with lower seal.
2. pull rod seal device according to claim 1, characterized by further comprising dust-proof cover, on the bar body of corresponding top seal top position, is installed with dust-proof cover.
3. pull rod seal device according to claim 2, is characterized in that dust-proof cover is up-small and down-big bowl-shape, and dust-proof cover is sleeved on bar body outside, and the top of dust-proof cover and bar body are bolted and are fixedly installed togather.
4. according to the pull rod seal device described in claim 1 or 2 or 3, it is characterized in that there is outer groove in the outside, middle part of slide, the inner side of pressing plate embeds in outer groove and is Spielpassung between the two; The lower inside of slide has the interior ring platform that is sleeved on bar body outside, and there is inner groove the slide inner side of corresponding interior Huan Tai top position; The lower end outside of upper sleeve gasket is fixed with outer shroud platform, outer shroud platform be embedded in inner groove and its base part seat on interior ring platform; On interior ring platform, circumferentially there is the sealing air passage communicating with sealing air inside cavity, on the upper sleeve gasket of corresponding sealing air channel position, be distributed with the communicating passage communicating with it, in correspondence, on the slide of seal groove position, be distributed with the intercommunicating pore that is communicated with upper seal groove and communicating passage.
5. according to the pull rod seal device described in claim 1 or 2 or 3, characterized by further comprising upper sealing ring hoop, on the sidewall of upper sleeve gasket, there is upper sleeve gasket opening vertically, the outside of upper sleeve gasket is intervally distributed with at least two upper hoop mounting grooves from top to bottom, upper sealing ring hoop is installed in hoop mounting groove on each, and the inner side of upper sleeve gasket is held in bar body outside by upper sealing ring hoop tightly.
6. pull rod seal device according to claim 4, characterized by further comprising upper sealing ring hoop, on the sidewall of upper sleeve gasket, there is upper sleeve gasket opening vertically, the outside of upper sleeve gasket is intervally distributed with at least two upper hoop mounting grooves from top to bottom, upper sealing ring hoop is installed in hoop mounting groove on each, and the inner side of upper sleeve gasket is held in bar body outside by upper sealing ring hoop tightly.
7. according to the pull rod seal device described in claim 1 or 2 or 3, it is characterized in that lower seal comprises lower stationary housing, lower flange and lower sleeve gasket, the lower end of sealing air cavity is fixed with the lower stationary housing that is sleeved on bar body outside, the outside, lower end of lower stationary housing is fixed with installation outer rim, the below that outer rim is installed is installed with the lower flange that is sleeved on bar body outside, is provided with the lower sleeve gasket that inner side is against bar body outside between the lower end of sealing air cavity and lower flange.
8. pull rod seal device according to claim 4, it is characterized in that lower seal comprises lower stationary housing, lower flange and lower sleeve gasket, the lower end of sealing air cavity is fixed with the lower stationary housing that is sleeved on bar body outside, the outside, lower end of lower stationary housing is fixed with installation outer rim, the below that outer rim is installed is installed with the lower flange that is sleeved on bar body outside, is provided with the lower sleeve gasket that inner side is against bar body outside between the lower end of sealing air cavity and lower flange.
9. pull rod seal device according to claim 5, it is characterized in that lower seal comprises lower stationary housing, lower flange and lower sleeve gasket, the lower end of sealing air cavity is fixed with the lower stationary housing that is sleeved on bar body outside, the outside, lower end of lower stationary housing is fixed with installation outer rim, the below that outer rim is installed is installed with the lower flange that is sleeved on bar body outside, is provided with the lower sleeve gasket that inner side is against bar body outside between the lower end of sealing air cavity and lower flange.
10. pull rod seal device according to claim 6, it is characterized in that lower seal comprises lower stationary housing, lower flange and lower sleeve gasket, the lower end of sealing air cavity is fixed with the lower stationary housing that is sleeved on bar body outside, the outside, lower end of lower stationary housing is fixed with installation outer rim, the below that outer rim is installed is installed with the lower flange that is sleeved on bar body outside, is provided with the lower sleeve gasket that inner side is against bar body outside between the lower end of sealing air cavity and lower flange.
11. pull rod seal device according to claim 7, is characterized in that the inner side of lower sleeve gasket is intervally distributed with at least two lower seal groove cavities from top to bottom; On the sidewall of lower sleeve gasket, there is lower sleeve gasket opening vertically, the outside of lower sleeve gasket is intervally distributed with at least two lower hoop mounting grooves from top to bottom, in each lower hoop mounting groove, lower seal hoop is installed, and the inner side of lower sleeve gasket is held in bar body outside by lower seal hoop tightly.
12. pull rod seal device according to claim 8, is characterized in that the inner side of lower sleeve gasket is intervally distributed with at least two lower seal groove cavities from top to bottom; On the sidewall of lower sleeve gasket, there is lower sleeve gasket opening vertically, the outside of lower sleeve gasket is intervally distributed with at least two lower hoop mounting grooves from top to bottom, in each lower hoop mounting groove, lower seal hoop is installed, and the inner side of lower sleeve gasket is held in bar body outside by lower seal hoop tightly.
13. pull rod seal device according to claim 9, is characterized in that the inner side of lower sleeve gasket is intervally distributed with at least two lower seal groove cavities from top to bottom; On the sidewall of lower sleeve gasket, there is lower sleeve gasket opening vertically, the outside of lower sleeve gasket is intervally distributed with at least two lower hoop mounting grooves from top to bottom, in each lower hoop mounting groove, lower seal hoop is installed, and the inner side of lower sleeve gasket is held in bar body outside by lower seal hoop tightly.
14. pull rod seal device according to claim 10, is characterized in that the inner side of lower sleeve gasket is intervally distributed with at least two lower seal groove cavities from top to bottom; On the sidewall of lower sleeve gasket, there is lower sleeve gasket opening vertically, the outside of lower sleeve gasket is intervally distributed with at least two lower hoop mounting grooves from top to bottom, in each lower hoop mounting groove, lower seal hoop is installed, and the inner side of lower sleeve gasket is held in bar body outside by lower seal hoop tightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420319375.XU CN203979412U (en) | 2014-06-16 | 2014-06-16 | Pull rod seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420319375.XU CN203979412U (en) | 2014-06-16 | 2014-06-16 | Pull rod seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203979412U true CN203979412U (en) | 2014-12-03 |
Family
ID=51976858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420319375.XU Expired - Fee Related CN203979412U (en) | 2014-06-16 | 2014-06-16 | Pull rod seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203979412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015582A (en) * | 2016-07-01 | 2016-10-12 | 大唐呼图壁能源开发有限公司热电厂 | Positive pressure sealing device for soot blower |
-
2014
- 2014-06-16 CN CN201420319375.XU patent/CN203979412U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015582A (en) * | 2016-07-01 | 2016-10-12 | 大唐呼图壁能源开发有限公司热电厂 | Positive pressure sealing device for soot blower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203604655U (en) | Combined sealing structure of main bearing of roller press | |
| CN203979412U (en) | Pull rod seal device | |
| CN201618582U (en) | Rubber flexible sealing device for middle-speed mill base | |
| CN203018138U (en) | Bugle-shaped sleeve for grinding roller of vertical roller mill | |
| CN211160226U (en) | Automatic alarm magnetic filter | |
| CN203916765U (en) | A kind of Vertical Mill | |
| CN205371631U (en) | Coal pulverizer pull rod sealing device | |
| CN203477324U (en) | Sealing device for pull rod of medium-speed coal mill | |
| CN202852026U (en) | Ceramic wedge-type slag-conveying valve | |
| CN206704200U (en) | Labyrinth sealing type rear end cap axle box forms | |
| CN204724245U (en) | The broken shaft group of a kind of colliery hammer mill | |
| CN204152971U (en) | Carry the edger roll bearing of sealing and there is the milling train of this edger roll bearing | |
| CN203380002U (en) | Sealing and centering device of rotating anode type electrostatic dust collector | |
| CN203750668U (en) | Feeding and sealing device for articulated chute of coal water slurry rod mill | |
| CN203548094U (en) | Oil-pressure ceramic plunger slurry pump | |
| CN203926510U (en) | Cylinder on clutch booster | |
| CN204025365U (en) | Novel water wheel dynamo bearing oil gas sealing configuration | |
| CN202500813U (en) | Sealing ring of sand suction pump | |
| CN204300350U (en) | A kind of oil pocket seal arrangement of gyratory crusher | |
| CN204039985U (en) | Iron and steel compound gate | |
| CN201394478Y (en) | Wet mill sealing device | |
| CN203725202U (en) | Coal mill | |
| CN110180667A (en) | A kind of roller mill separator labyrinth seal structure | |
| CN202790941U (en) | Grinding roller sealing device for vertical roller mill | |
| CN203571056U (en) | Sealing device for external pressure end face of internal mixer |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20190616 |