CN202228686U - Sealing device of transmission shaft of medium speed coal mill - Google Patents
Sealing device of transmission shaft of medium speed coal mill Download PDFInfo
- Publication number
- CN202228686U CN202228686U CN2011202773222U CN201120277322U CN202228686U CN 202228686 U CN202228686 U CN 202228686U CN 2011202773222 U CN2011202773222 U CN 2011202773222U CN 201120277322 U CN201120277322 U CN 201120277322U CN 202228686 U CN202228686 U CN 202228686U
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- Prior art keywords
- ring
- connecting ring
- slag blocking
- carbon
- sealing
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Abstract
The utility model relates to a sealing device of a transmission shaft of a medium speed coal mill, which comprises a transmission disc. An outer slag blocking ring is arranged on the middle left side of the transmission disc, a recessed opening of the outer slag blocking ring and a protruding block on an upper connection ring under the recessed opening form a gap through screw fit, a lower connection ring is arranged under the upper connection ring and connected with a base on the left lower side of the lower connection ring, an air flow channel is arranged in the middle of the lower connection ring and connected with a sealing pipeline, and the sealing pipeline is connected with a sealing air mother pipe. An inner slag blocking ring is arranged on the upper side of the right end of the lower connection ring, a blocking opening is arranged on the lower side of the right end of the lower connection ring, a plurality of sealing rings are arranged in the blocking opening and connected with the lower connection ring through bolts, a carbon ring slot is arranged on one side of the sealing rings contacted with the transmission disc, a carbon ring is arranged in the carbon ring slot, a spring slot is arranged on the left side of the carbon ring, and a spring is arranged in the spring slot. A sealing cavity is formed by the outer slag blocking ring, the upper connection ring, the lower connection ring, the sealing rings and the carbon ring. The sealing device has the advantages of being better in sealing effect and longer in service life.
Description
Technical field
The utility model relates to a kind of medium-speed pulverizer sealed device for drive-shaft.
Background technique
At present, all comprise rotatable parts drive plate and base on the medium-speed pulverizer, be designed with the transition storage facilities of grit chamber as the stone coal at this between the two, relative movement between drive plate and the base is provided with matching gap between the two.Be full of barotropic gas in the mill in the coal pulverizer running, contain dusty gas and reveal the severe contamination production environment easily from gap location.For addressing this problem; Usually the seal arrangement of special on base; Mainly contain two kinds of structures at present: the one, the carbon ring sealing; Carbon dam is placed in the seal groove, and the carbon dam internal surface is fitted in and forms sealing on the drive plate running shaft, thereby the large particle that carbon ring is got into easily in this structure damage causes dust pollution; Second kind of sealing means is for adopting metal gap sealing, the bad and easy abrasion transmission shaft of this sealing configuration effect.
The model utility content
The purpose of the utility model provides a kind of medium-speed pulverizer sealed device for drive-shaft, overcomes the deficiency of above-mentioned aspect in the existing product.
The purpose of the utility model is to realize through following technological scheme:
A kind of medium-speed pulverizer sealed device for drive-shaft comprises drive plate, and left side, said drive plate middle part is provided with outer slag blocking ring; Outer slag blocking ring right side is provided with recess, and outer slag blocking ring below is provided with connecting ring, and last connecting ring is provided with and the corresponding projection of outer slag blocking ring recess; Form the gap through screw-thread fit between the recess of outer slag blocking ring and the projection of last connecting ring; Last connecting ring below is provided with down connecting ring, and following connecting ring is connected with the base of its left bottom, and following connecting ring middle part is provided with air-flow path; Air-flow path is connected with closed conduit one end, and the closed conduit the other end is connected with the female pipe of sealing wind; Following connecting ring right-hand member upside is provided with interior slag blocking ring, and interior slag blocking ring is positioned at the connecting ring right side; Following connecting ring right-hand member downside is provided with seam, is provided with some seal rings in the seam, and seal ring is connected with following connecting ring through bolt; The side that seal ring contacts with drive plate is provided with the carbon annular groove; Be provided with carbon ring in the carbon annular groove, the carbon ring left side is provided with spring groove, is provided with spring in the spring groove; Outer slag blocking ring, last connecting ring, following connecting ring, seal ring and carbon ring constitute Seal cage.
The beneficial effect of the utility model is: 1, cooperating between outer slag blocking ring and the last connecting ring is concavo-convex, and the sealing stroke is longer, increased the resistance that gas discharges to the grit chamber and contained powder gas leak resistance, reduced pollution; 2, seal ring is completely detachable, and carbon ring is changed convenient; 3, carbon ring can float in the carbon annular groove, and gauge wear can be compensated by the effect of spring automatically, has guaranteed sealing effect, has prolonged working life; 4, be designed with inner pushing off the slag structure and can effectively protect carbon ring, prolong its working life; 5, outer slag blocking ring is a segmental structure, can conveniently adjust seal clearance and easy disassembly; 6, outer slag blocking ring has worm structure, can produce outside swirling eddy behind the equipment operation; 7, be designed with the purging mouth, need not disintegrate and to clean seal arrangement inside.
Description of drawings
According to accompanying drawing the utility model is done further explain below.
Fig. 1 is the structural representation of the described medium-speed pulverizer sealed device for drive-shaft of the utility model embodiment;
Fig. 2 is the enlarged view at A place among Fig. 1.
Among the figure:
1, outer slag blocking ring; 2, interior slag blocking ring; 3, go up connecting ring; 4, following connecting ring; 5, seal ring; 6, spring; 7, carbon ring; 8, base; 9, drive plate; 10, gap; 11, Seal cage; 12, air-flow path; 13, carbon annular groove; 14, closed conduit; 15, the female pipe of sealing wind.
Embodiment
Shown in Fig. 1-2, the described a kind of medium-speed pulverizer sealed device for drive-shaft of the utility model embodiment comprises drive plate 9; Left side, said drive plate 9 middle parts is provided with outer slag blocking ring 1; Outer slag blocking ring 1 right side is provided with recess, and outer slag blocking ring 1 below is provided with connecting ring 3, and last connecting ring 3 is provided with and the corresponding projection of outer slag blocking ring 1 recess; Form cylinder gap 10 through screw-thread fit between the projection of the recess of outer slag blocking ring 1 and last connecting ring 3; Last connecting ring 3 belows are provided with down connecting ring 4, and following connecting ring 4 is connected with the base 8 of its left bottom, and following connecting ring 4 middle parts are provided with air-flow path 12; Air-flow path 12 is connected with closed conduit 14 1 ends, and closed conduit 14 the other ends are connected with the female pipe 15 of sealing wind; Following connecting ring 4 right-hand member upsides are provided with interior slag blocking ring 2, and interior slag blocking ring 2 is positioned at connecting ring 3 right sides; Following connecting ring 4 right-hand member downsides are provided with seam; Be provided with some seal rings 5 in the seam; Seal ring 5 is connected with following connecting ring 4 through bolt, and the side that seal ring 5 contacts with drive plate 9 is provided with carbon annular groove 13, is provided with carbon ring 7 in the carbon annular groove 13; Carbon ring 7 left sides are provided with spring groove, are provided with spring 6 in the spring groove; Outer slag blocking ring 1, go up connecting ring 3, connecting ring 4, seal ring 5 and carbon ring 7 constitute Seal cages 11 down.
The described medium-speed pulverizer sealed device for drive-shaft of the utility model has following beneficial effect:
1, cooperating between outer slag blocking ring 1 and the last connecting ring 3 is concavo-convex, and the sealing stroke is longer, increased the resistance that gas discharges to the grit chamber and contained powder gas leak resistance, reduced pollution;
2, seal ring 5 is completely detachable, and it is convenient that carbon ring 7 is changed;
3, carbon ring 7 can float in carbon annular groove 13, and gauge wear can be compensated by the effect of spring 6 automatically, has guaranteed sealing effect, has prolonged working life;
4, be designed with inner pushing off the slag structure and can effectively protect carbon ring 7, prolong its working life;
5, outer slag blocking ring 1 is a segmental structure, can conveniently adjust seal clearance and easy disassembly;
6, outer slag blocking ring 1 has worm structure, can produce outside swirling eddy behind the equipment operation;
7, be designed with the purging mouth, need not disintegrate and to clean seal arrangement inside.
The utility model is not limited to above-mentioned preferred forms; Anyone can draw other various forms of products under the enlightenment of the utility model; No matter but on its shape or structure, do any variation; Every have identical with a application or akin technological scheme, all drops within the protection domain of the utility model.
Claims (1)
1. medium-speed pulverizer sealed device for drive-shaft; Comprise drive plate (9); It is characterized in that: left side, said drive plate (9) middle part is provided with outer slag blocking ring (1), and outer slag blocking ring (1) right side is provided with recess, and outer slag blocking ring (1) below is provided with connecting ring (3); Last connecting ring (3) is provided with the corresponding projection of said recess with outer slag blocking ring (1), forms gap (10) through screw-thread fit between the said projection of the said recess of outer slag blocking ring (1) and last connecting ring (3); Last connecting ring (3) below is provided with down connecting ring (4); Following connecting ring (4) is connected with the base (8) of following connecting ring (4) left bottom; Following connecting ring (4) middle part is provided with air-flow path (12); Air-flow path (12) is connected with closed conduit (14) one ends, and closed conduit (14) the other end is connected with the sealing female pipe of wind (15); Following connecting ring (4) right-hand member upside is provided with interior slag blocking ring (2), and interior slag blocking ring (2) is positioned at connecting ring (3) right side; Following connecting ring (4) right-hand member downside is provided with seam; Be provided with some seal rings (5) in the said seam; Seal ring (5) is connected with following connecting ring (4) through bolt, and the side that seal ring (5) contacts with drive plate (9) is provided with carbon annular groove (13), is provided with carbon ring (7) in the carbon annular groove (13); Carbon ring (7) left side is provided with spring groove, is provided with spring (6) in the said spring groove; Outer slag blocking ring (1), last connecting ring (3), following connecting ring (4), seal ring (5) and carbon ring (7) constitute Seal cage (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202773222U CN202228686U (en) | 2011-08-02 | 2011-08-02 | Sealing device of transmission shaft of medium speed coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202773222U CN202228686U (en) | 2011-08-02 | 2011-08-02 | Sealing device of transmission shaft of medium speed coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228686U true CN202228686U (en) | 2012-05-23 |
Family
ID=46079272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202773222U Expired - Lifetime CN202228686U (en) | 2011-08-02 | 2011-08-02 | Sealing device of transmission shaft of medium speed coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228686U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721795A (en) * | 2013-12-19 | 2014-04-16 | 马鞍山市荣亿密封材料有限责任公司 | Spindle air-sealing device of medium-speed mill |
| CN109237044A (en) * | 2018-10-31 | 2019-01-18 | 东莞市华汇精密机械有限公司 | A kind of dry-type encapsulated device for twin-screw dry powder pump |
-
2011
- 2011-08-02 CN CN2011202773222U patent/CN202228686U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721795A (en) * | 2013-12-19 | 2014-04-16 | 马鞍山市荣亿密封材料有限责任公司 | Spindle air-sealing device of medium-speed mill |
| CN103721795B (en) * | 2013-12-19 | 2015-09-16 | 马鞍山市荣亿密封材料有限责任公司 | A kind of medium-speed pulverizer main shaft air seal set |
| CN109237044A (en) * | 2018-10-31 | 2019-01-18 | 东莞市华汇精密机械有限公司 | A kind of dry-type encapsulated device for twin-screw dry powder pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |
|
| CX01 | Expiry of patent term |