CN101628254B - Movable sealing structure of residue chamber of coal grinding machine - Google Patents
Movable sealing structure of residue chamber of coal grinding machine Download PDFInfo
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- CN101628254B CN101628254B CN2009100346352A CN200910034635A CN101628254B CN 101628254 B CN101628254 B CN 101628254B CN 2009100346352 A CN2009100346352 A CN 2009100346352A CN 200910034635 A CN200910034635 A CN 200910034635A CN 101628254 B CN101628254 B CN 101628254B
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- drive plate
- base
- grinding machine
- seal receptacle
- coal grinding
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Abstract
The invention relates to a component structure used for a coal grinding machine in fuel coal power generation equipment, in particular to a movable sealing structure of a residue chamber of the coal grinding machine. The structure comprises a residue chamber positioned between a transmission disk and a base, wherein a gas sealing pipeline is connected on the base, the base is also provided with a sealing seat which is opened with a plurality of ring grooves and is provided with a plurality of carbon rings; the residue chamber and the transmission disk are separated by a fixed cylinder body and a rotation cylinder body which encircle the transmission disk; the fixed cylinder body is installed on the base, the cylinder wall of the fixed cylinder body is divided into two layers, and the height of the cylinder wall of the inner layer is smaller than that of the cylinder wall of the outer layer; and the rotation cylinder body is installed on the transmission disk, the lower section of the cylinder wall of the rotation cylinder body is in a step shape, and the two sections of step-shaped cylinder walls are respectively close to the cylinder walls of the inner layer and the outer layer to form a turn shape clearance. The invention has good sealing effect and long service life.
Description
Technical field
The present invention relates to a kind of modular construction that is used for the coal pulverizer of coal powerplant, specifically is a kind of movable sealing structure of residue chamber of coal grinding machine.
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, present usually seat is gone up the seal receptacle that cooperates with the drive plate rotating shaft is set, and has annular groove on the seal receptacle inwall, settles carbon ring in annular groove, makes 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 invention is that the numb coal machine grit chamber movable sealing 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 invention 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 the barrel of fixed cylinder is two-layer, and wherein the barrel height of internal layer is less than outer barrel; Described rotating cylinder is installed on the drive plate, and the barrel hypomere of rotating cylinder is step-like, and two sections step-like barrels form the gap of turnover shape respectively near the inside and outside two-layer barrel of fixed cylinder.
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.
Advantage of the present invention is: 1, because the gap between grit chamber and the drive plate for turnover shape, increases the resistance that ground-slag leaks, reduced the ground-slag pollution; 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 embodiment of the invention.
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; Fixed cylinder 10 is installed on the base 2, and the barrel 12 of fixed cylinder is two-layer, and wherein the barrel height of internal layer is less than outer barrel; Rotating cylinder 11 is installed on the drive plate 1, and the barrel hypomere of rotating cylinder is step-like, and two sections step-like barrels form the gap 14 of turnover shape respectively near the inside and outside two-layer barrel of fixed cylinder.
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 the barrel of fixed cylinder (12) is two-layer, and wherein the barrel height of internal layer is less than outer barrel; Described rotating cylinder (11) is installed on the drive plate (1), and the barrel hypomere of rotating cylinder is step-like, and two sections step-like barrels form the gap (14) of turnover shape respectively near the inside and outside two-layer barrel of fixed cylinder.
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 |
|---|---|---|---|
| CN2009100346352A CN101628254B (en) | 2009-09-04 | 2009-09-04 | Movable sealing structure of residue chamber of coal grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100346352A CN101628254B (en) | 2009-09-04 | 2009-09-04 | Movable sealing structure of residue chamber of coal grinding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101628254A CN101628254A (en) | 2010-01-20 |
| CN101628254B true CN101628254B (en) | 2011-09-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100346352A Active CN101628254B (en) | 2009-09-04 | 2009-09-04 | Movable sealing structure of residue chamber of coal grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101628254B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267127A (en) * | 2013-05-23 | 2013-08-28 | 郭瑜 | Pull rod sealing structure of load-variable coal mill |
| CN106179694A (en) * | 2014-12-03 | 2016-12-07 | 成都宸鸿科技有限公司 | A kind of roller cuts the automatic blanking assembly of grater |
| US10914820B2 (en) * | 2018-01-31 | 2021-02-09 | Uatc, Llc | Sensor assembly for vehicles |
| CN113983171B (en) * | 2021-09-26 | 2024-10-01 | 华能甘肃西固热电有限公司 | Base dynamic and static sealing device for ZGM95G type coal mill |
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2009
- 2009-09-04 CN CN2009100346352A patent/CN101628254B/en active Active
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| Publication number | Publication date |
|---|---|
| CN101628254A (en) | 2010-01-20 |
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