CN201664626U - Sealing structure for cinder chamber of coal mill - Google Patents
Sealing structure for cinder chamber of coal mill Download PDFInfo
- Publication number
- CN201664626U CN201664626U CN2009202312074U CN200920231207U CN201664626U CN 201664626 U CN201664626 U CN 201664626U CN 2009202312074 U CN2009202312074 U CN 2009202312074U CN 200920231207 U CN200920231207 U CN 200920231207U CN 201664626 U CN201664626 U CN 201664626U
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- drive plate
- base
- sealing structure
- seal receptacle
- chamber
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Abstract
The utility model relates to a part structure of a coal mill in fire-coal power generating equipment, and in particular to a sealing structure for a cinder chamber of the coal mill. The sealing structure comprises a cinder chamber positioned between a rotary driving disc and a fixed base, wherein the base is connected with an air seal pipeline used for filling compressed air in the cinder chamber; the base is also provided with a sealing socket matched with a rotating shaft of the driving disc; the sealing socket is internally provided with a plurality of ring grooves and a plurality of carbon rings; the cinder chamber is separated from the driving disc by a fixed cylinder and a rotating cylinder which surround the driving disc; the fixed cylinder is arranged on the base; the rotating cylinder is arranged on the driving disc; and the surfaces of the rotating cylinder and the fixed cylinder are matched mutually by a plurality of pairs of ring-shaped bulges and ring-shaped grooves, thus forming a maze-shaped gap. The sealing structure for the cinder chamber of the coal mill has good sealing effect and long service life.
Description
Technical field
The utility model relates to a kind of modular construction that is used for the coal pulverizer of coal powerplant, specifically is a kind of slag chamber seal structure of coal mill.
Background technology
In the existing medium-speed pulverizer,,, therefore fit clearance need be set owing to need relative motion between drive plate and the base as the drive plate of rotatable parts with as being provided with the grit chamber that is used for storing up ground-slag between the base of fixed part usually.In equipment running process, ground-slag leaks from gap location easily, causes the production environment dust pollution serious.In order to prevent that ground-slag from leaking, the seal receptacle that cooperates with the drive plate rotating shaft is set on base usually, on the seal receptacle inwall, have annular groove, in annular groove, settle carbon ring, make carbon ring bore area drive plate rotating shaft fitted seal.In this structure, carbon ring can produce wearing and tearing in running, makes that the gap between itself and rotating shaft is strengthened, and therefore still is difficult to avoid the ground-slag pollution that leaks.
Summary of the invention
Technical problem to be solved of the present utility model is that the numb coal machine slag chamber seal structure of a kind of good sealing effect, long service life is provided.
Movable sealing structure of residue chamber of coal grinding machine of the present utility model includes the grit chamber between drive plate that rotates and fixing base, be connected with on the base and be used in the grit chamber, feeding compressed-air actuated sealing gland pipeline, the seal receptacle that cooperates with the drive plate rotating shaft also is installed on the base, has some annular grooves in the seal receptacle and be provided with several carbon rings; Separate by fixed cylinder and transhipment cylindrical shell between described grit chamber and the drive plate around drive plate; Described fixed cylinder is installed on the base, and rotating cylinder is installed on the drive plate, and rotating cylinder and fixed cylinder surface cooperatively interact to annular projection and annular recess by many, forms the gap of labyrinth-like.
Have a gas channel on the described seal receptacle, gas channel one end leads to the gap between seal receptacle and the drive plate rotating shaft, and the other end of gas channel is connected with above-mentioned sealing gland pipeline through one section wireway.
The carbon ring of described seal receptacle inboard also can rotate with rotating shaft in the drive plate rotating shaft by the ring spring anchor ear.
The opening that leads to the seal receptacle inboard of described gas channel is between two carbon rings.
The utility model has the advantages that: 1,, increased the resistance that ground-slag leaks, reduced the ground-slag pollution because the gap between grit chamber and the drive plate is a labyrinth-like; 2, can in the gap between base and the drive plate, suck the air-flow of certain pressure by wireway, also play the effect that stops ground-slag to leak; 3, adopt carbon ring and the drive plate rotating shaft structure of rotation synchronously, changed traditional mode of passing through slipper seal between carbon ring endoporus and the drive plate rotating shaft, and carry out slipper seal between upper and lower end face by carbon ring and the annular groove inwall, the gap that sealing surface wear produces can compensate under the pressure of air-flow automatically, has guaranteed sealing effectiveness, has prolonged service life.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
As shown in the figure, this movable sealing structure of residue chamber of coal grinding machine includes the grit chamber 3 between drive plate 1 that rotates and fixing base 2, be connected with on the base and be used in the grit chamber, feeding compressed-air actuated sealing gland pipeline 4, the seal receptacle 6 that cooperates with drive plate rotating shaft 5 also is installed on the base, has a plurality of annular grooves 7 in the seal receptacle and be provided with several and pass through ring spring 8 anchor ears at drive plate rotating shaft carbon ring 9; Separate by fixed cylinder 10 and rotating cylinder 11 between grit chamber 3 and the drive plate 1 around drive plate; Stationary magazine creel 10 bodies are installed on the base 2, and rotating cylinder 11 is installed on the drive plate 1, and rotating cylinder and fixed cylinder surface cooperatively interact to annular projection and annular recess by many, form the gap 14 of labyrinth-like.
Have a gas channel 15 on the seal receptacle 6, gas channel one end leads to the gap between seal receptacle and the drive plate rotating shaft, and the other end of gas channel is connected with above-mentioned sealing gland pipeline 4 through one section wireway 16.The opening that gas channel 15 leads to the seal receptacle inboard is between two carbon rings 9, and the air-flow that is blown into by gas channel can produce axial compressive force to carbon ring, to guarantee its end face seal.
Claims (4)
1. movable sealing structure of residue chamber of coal grinding machine, include the grit chamber (3) between drive plate (1) that is positioned at rotation and the base of fixing (2), be connected with on the base and be used in the grit chamber, feeding compressed-air actuated sealing gland pipeline (4), the seal receptacle (6) that cooperates with drive plate rotating shaft (5) also is installed on the base, has some annular grooves (7) in the seal receptacle and be provided with several carbon rings (9); It is characterized in that: separate by fixed cylinder (10) and rotating cylinder (11) between described grit chamber (3) and the drive plate (1) around drive plate; Described fixed cylinder (10) is installed on the base (2), and rotating cylinder (11) is installed on the drive plate (1), and rotating cylinder and fixed cylinder surface cooperatively interact to annular projection and annular recess by many, forms the gap (14) of labyrinth-like.
2. movable sealing structure of residue chamber of coal grinding machine according to claim 1, it is characterized in that: have a gas channel (15) on the seal receptacle (6), gas channel one end leads to the gap between seal receptacle and the drive plate rotating shaft, and the other end of gas channel is connected with above-mentioned sealing gland pipeline (4) through one section wireway (16).
3. movable sealing structure of residue chamber of coal grinding machine according to claim 2 is characterized in that: the carbon ring of seal receptacle inboard (9) is gone up also and can be rotated with rotating shaft in drive plate rotating shaft (5) by ring spring (8) anchor ear.
4. movable sealing structure of residue chamber of coal grinding machine according to claim 3 is characterized in that: the opening that gas channel (15) leads to the seal receptacle inboard is positioned between two carbon rings (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202312074U CN201664626U (en) | 2009-09-04 | 2009-09-04 | Sealing structure for cinder chamber of coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202312074U CN201664626U (en) | 2009-09-04 | 2009-09-04 | Sealing structure for cinder chamber of coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201664626U true CN201664626U (en) | 2010-12-08 |
Family
ID=43265578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202312074U Expired - Lifetime CN201664626U (en) | 2009-09-04 | 2009-09-04 | Sealing structure for cinder chamber of coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201664626U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422864B (en) * | 2015-12-30 | 2017-07-04 | 神华集团有限责任公司 | The sealing structure and coal pulverizer of coal pulverizer |
| CN109227397A (en) * | 2018-09-30 | 2019-01-18 | 深圳市诺峰光电设备有限公司 | A kind of polishing proof mechanism of water and polishing machine |
-
2009
- 2009-09-04 CN CN2009202312074U patent/CN201664626U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422864B (en) * | 2015-12-30 | 2017-07-04 | 神华集团有限责任公司 | The sealing structure and coal pulverizer of coal pulverizer |
| CN109227397A (en) * | 2018-09-30 | 2019-01-18 | 深圳市诺峰光电设备有限公司 | A kind of polishing proof mechanism of water and polishing machine |
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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: 20101208 |
|
| CX01 | Expiry of patent term |