CN208687185U - Wet ball mill inlet sealing - Google Patents
Wet ball mill inlet sealing Download PDFInfo
- Publication number
- CN208687185U CN208687185U CN201821309315.4U CN201821309315U CN208687185U CN 208687185 U CN208687185 U CN 208687185U CN 201821309315 U CN201821309315 U CN 201821309315U CN 208687185 U CN208687185 U CN 208687185U
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- Prior art keywords
- road
- bend pipe
- sealing
- hollow shaft
- coal
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Abstract
A kind of wet ball mill inlet sealing, belongs to power plant coal technical field of sealing technology.The purpose of this utility model is to increase desulphurization system wet ball mill inlet wet ball mill inlet sealing that is three-layer sealed, and can dismounting.The hollow shaft that the utility model includes defeated coal bend pipe, connect with coal-grinding storehouse, it is characterised in that: be equipped with three-layer sealed structure in defeated coal bend pipe and hollow shaft.The utility model is structurally reasonable, easy to install and use.Sealing device is that the preceding two seals using three seal structures, close to hollow shaft are fixed by bolts in hollow shaft, and third road is sealed into adjustable sealing, is fixed by bolts to second sealing, can adjust distance with jackscrew.The service life of sealing device is extended, maintenance cost is reduced, reduces labor intensity of workers.
Description
Technical field
The utility model belongs to power plant coal technical field of sealing technology.
Background technique
Desulphurization system wet ball mill is that thermal power plant uses very extensive equipment, then desulphurization system wet ball-milling
Machine inlet seal design structure is unreasonable, and long time running will lead to mill feeding end and serious spillage phenomenon occurs.In original design
Bushing and bend pipe between be Y type sealing structure, material is nitrile rubber.This kind is sealed into disposable unadjustable sealing, uses
In the process if Y type sealing end is worn, it will appear spillage phenomenon, and cannot handle, sealing device can only be replaced.
The sealing device is very inconvenient in replacement process simultaneously, needs to enter inner barrel and dismantles outward from interior, gives Maintenance and Repair
It has caused great difficulties.
Summary of the invention
The purpose of this utility model is three-layer sealed to the increase of desulphurization system wet ball mill inlet, and can be dismounted wet
The sealing of formula ball mill inlet.
The hollow shaft that the utility model includes defeated coal bend pipe, connect with coal-grinding storehouse, it is characterised in that: in defeated coal bend pipe and sky
Mandrel is equipped with three-layer sealed structure；Three-layer sealed structure: tailgate is fixedly mounted by threaded hole for three-layer sealed structure end
In hollow shaft, three-layer sealed structure is covered in defeated coal bend pipe end, and defeated coal bend pipe is inserted into the upper half of three-layer sealed inside configuration
It is divided into open ports, the top half of open ports corresponding first road sealing groove and the second road sealing groove, the first road sealing groove and second
Road sealing groove is successively opened in three-layer sealed structure；The half downward extension portion of tailgate upper end is baffle, and baffle is kept off in defeated coal
The top half of bend pipe inner cavity has filler inside the first road sealing groove and the second road sealing groove, in the slot of the second road sealing groove
There is third road sealed support on the outside of wall, cone mouth casting die is fixedly installed with by fastening bolt in third road sealed support side, bores
In the matched conical opening being inserted under cone mouth casting die of shape sealing element, there is fixed branch on the defeated coal bend pipe wall on rear side of taper seal
Frame has telescopic spring jackscrew on fixed bracket, and telescopic spring jackscrew front end withstands on taper seal tail portion.
The utility model is structurally reasonable, easy to install and use.Sealing device is using three seal structures, close to hollow shaft
Preceding two seals be fixed by bolts in hollow shaft, third road is sealed into adjustable sealing, and it is close to be fixed by bolts to second
Envelope can adjust distance with jackscrew.The service life of sealing device is extended, maintenance cost is reduced, reduces labor intensity of workers.
Detailed description of the invention
Fig. 1 is the positional structure schematic diagram that the utility model is mounted on desulphurization system wet ball mill；
Fig. 2 is the utility model detailed construction schematic diagram.
Specific embodiment
The hollow shaft 3 that the utility model includes defeated coal bend pipe 1, connect with coal-grinding storehouse, defeated coal bend pipe 1 are existing coal chutes
Road, hollow shaft 3 are that one of desulphurization system wet ball mill front end is similar to one spline structure of skullcap, are with entire coal-grinding mechanism
Rotation.Due to defeated coal bend pipe 1 then hollow shaft 3 rotates, so, sealing is always one and anxious to be resolved asks between them
Topic, the purpose of this utility model seek to complete the sealing between them.Defeated coal bend pipe 1 and hollow shaft 3 be equipped with three layers it is close
Seal structure 2 is for three-layer sealed two layers of head as hollow shaft 3 rotates, and the last layer is fixed.Three-layer sealed knot
Structure 2: tailgate 210 is fixedly mounted in hollow shaft 3 by three-layer sealed 2 end of structure by threaded hole 208, three-layer sealed structure 2
It covers in defeated 1 end of coal bend pipe, it is open ports 213, open ports that defeated coal bend pipe 1, which is inserted into the top half inside three-layer sealed structure 2,
The top half of 213 corresponding first road sealing grooves 207 and the second road sealing groove 206, the first road sealing groove 207 and second sealing
Slot 206 is successively opened in three-layer sealed structure 2；The half downward extension portion of 210 upper end of tailgate is baffle 212, and baffle 212 is kept off
Top half in defeated 1 inner cavity of coal bend pipe has filler 209 inside the first road sealing groove 207 and the second road sealing groove 206,
There is third road sealed support 205 on the outside of the cell wall of second road sealing groove 206,205 side of sealed support passes through fastening in third road
Bolt 211 is fixedly installed with cone mouth casting die 204, in the matched conical opening being inserted under cone mouth casting die 204 of taper seal 203,
There is fixed bracket 202 on defeated 1 wall of coal bend pipe of 203 rear side of taper seal, has telescopic spring jackscrew on fixed bracket 202
201,201 front end of telescopic spring jackscrew withstands on 203 tail portion of taper seal.
Since tailgate 210, the first road sealing groove 207, the second road sealing groove 206, the third road in three-layer sealed structure 2 are close
Bracket 205, the equal fixed bit one of cone mouth casting die 204 are sealed, and fixed by tailgate 210 and hollow shaft 3, so, in desulphurization system
When hollow shaft 3 on wet ball mill rotates, all components being fixed thereon just all rotate together, and taper seal
203 be static element, so, it is sliding friction between cone mouth casting die 204 and taper seal 203, and the first road sealing groove 207,
Retain gap between second road sealing groove 206 and defeated coal bend pipe 1, cannot contact.During spin friction, taper seal
Although 203 is lossy, under the promotion of telescopic spring jackscrew 201, inside packed type is gradually moved, remain be blocked in it is defeated
Between coal bend pipe 1 and cone mouth casting die 204.So taper seal 203 comparatively wear it is more serious, generally using relatively soft
Sealing material, and use half range installation form, i.e. two semi-ring forms are inserted under cone mouth casting die 204, in cone mouth casting die 204
Pressure under, basic two and half interannular gap by taper seal 203 deformation obturage.
The sealing device of the utility model is that the preceding two seals using three seal structures, close to hollow shaft are solid with bolt
It is scheduled in hollow shaft, third road is sealed into adjustable sealing, is fixed by bolts to second sealing, can adjust distance with jackscrew.
Dismounting work can be carried out in outside.
The improved sealing structure of the utility model sealing device is returned using three seal structures simultaneous with stock tank is returned
Stock tank i.e. the first road sealing groove 207, the second road sealing groove 206, have the function of to return slurry.Improved bend pipe and bushing more optimize
Property, and be mutually not in wear phenomenon.First of sealing returns the first road sealing of water (slurry), wherein having Water-returning board, water
(slurry) arrives this, and returning water (slurry) plate can be returned in bend pipe, illustrates at the upper half of bend pipe front end herein for open type.Second sealing
Said function.Three seals are using the rubber of resistance to nanotesla and polyurethane rubber control axial direction and radial seal, are last at this
Together seal, have abrasion using adjustable locking sealing structure, such as leading portion rubber seal, can manual jackscrew further lock, reach
To sustainable sealing.The mutual abrasion at this between bend pipe and bushing and pressing plate also eliminates simultaneously, its service life can be made to extend, reduced
Maintenance and replacement number.
Claims (1)
1. a kind of wet ball mill inlet sealing, including defeated coal bend pipe (1), the hollow shaft (3) connecting with coal-grinding storehouse, feature exists
In: three-layer sealed structure (2) are installed in defeated coal bend pipe (1) and hollow shaft (3)；Three-layer sealed structure (2): three-layer sealed structure
(2) tailgate (210) is fixedly mounted on hollow shaft (3) by end by threaded hole (208), and three-layer sealed structure (2) covers defeated
Coal bend pipe (1) end, it is open ports (213) that defeated coal bend pipe (1), which is inserted into the internal top half of three-layer sealed structure (2), is opened wide
The top half of mouthful (213) corresponding first road sealing groove (207) and the second road sealing groove (206), the first road sealing groove (207) and
Second road sealing groove (206) is successively opened in three-layer sealed structure (2)；The half downward extension portion of tailgate (210) upper end is
Baffle (212), baffle (212) keeps off the top half in defeated coal bend pipe (1) inner cavity, in the first road sealing groove (207) and second
There are filler (209) inside seal groove (206), has third road sealed support on the outside of the cell wall of the second road sealing groove (206)
(205), cone mouth casting die (204), taper are fixedly installed with by fastening bolt (211) in third road sealed support (205) side
In the matched conical opening being inserted under cone mouth casting die (204) of sealing element (203), the defeated coal on rear side of taper seal (203) is curved
There are fixed bracket (202) on pipe (1) wall, has telescopic spring jackscrew (201), telescopic spring jackscrew on fixed bracket (202)
(201) front end withstands on taper seal (203) tail portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821309315.4U CN208687185U (en) | 2018-08-15 | 2018-08-15 | Wet ball mill inlet sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821309315.4U CN208687185U (en) | 2018-08-15 | 2018-08-15 | Wet ball mill inlet sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208687185U true CN208687185U (en) | 2019-04-02 |
Family
ID=65885087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821309315.4U Active CN208687185U (en) | 2018-08-15 | 2018-08-15 | Wet ball mill inlet sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208687185U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389958A (en) * | 2021-06-22 | 2021-09-14 | 江苏瑞亿石油机械有限公司 | High-pressure movable elbow |
-
2018
- 2018-08-15 CN CN201821309315.4U patent/CN208687185U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389958A (en) * | 2021-06-22 | 2021-09-14 | 江苏瑞亿石油机械有限公司 | High-pressure movable elbow |
| CN113389958B (en) * | 2021-06-22 | 2022-03-11 | 江苏瑞亿石油机械有限公司 | High-pressure movable elbow |
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