CN215410194U - Medium speed coal mill main shaft sealing device that leakproofness is good - Google Patents
Medium speed coal mill main shaft sealing device that leakproofness is good Download PDFInfo
- Publication number
- CN215410194U CN215410194U CN202121115158.5U CN202121115158U CN215410194U CN 215410194 U CN215410194 U CN 215410194U CN 202121115158 U CN202121115158 U CN 202121115158U CN 215410194 U CN215410194 U CN 215410194U
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- Prior art keywords
- sealing
- main shaft
- sealing device
- flange
- coal mill
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 132
- 239000003245 coal Substances 0.000 title claims abstract description 23
- 239000002131 composite material Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 4
- 239000003566 sealing material Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002817 coal dust Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
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- Sealing Devices (AREA)
- Crushing And Grinding (AREA)
Abstract
The utility model relates to the technical field of mechanical sealing, and discloses a main shaft sealing device of a medium-speed coal mill, which comprises a sealing device main body, wherein one side of the sealing device main body vertically penetrates through a main shaft, one side of the sealing device main body corresponding to the main body is fixedly connected with a fixing plate, and the fixing plate and one side of the sealing device main body vertically penetrate through the main shaft. The utility model not only seals the main shaft in the radial direction by installing the radial sealing ring, the sealing performance of the main shaft sealing device is better, coal dust and hot air are not easy to leak, the noise of the coal mill is reduced, the field civilized production work is facilitated, but also seals the main shaft in the axial direction by sleeving the axial sealing ring on the main shaft, the axial sealing adopts composite rubber as a main sealing material and is compressed by an elastic flange, the whole sealing device rotates along with the main shaft, after the sealing material is worn, the elastic flange automatically applies pressure to perform clearance compensation until the sealing material is completely ground, and the sealing device can effectively seal for a long time.
Description
Technical Field
The utility model relates to the technical field of mechanical sealing, in particular to a spindle sealing device of a medium-speed coal mill, which has good sealing performance.
Background
The mechanical seal is a device for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and is kept to be attached and relatively slide under the action of fluid pressure and elasticity of the compensating mechanism and the matching of the auxiliary seal. For example, the main shaft of the medium speed coal mill is mostly sealed by adopting a plurality of layers of copper sheets.
But the sealing performance of the main shaft sealing device of the existing medium-speed coal mill is not enough, and the replacement cost of the sealing device is too high. Therefore, the person skilled in the art provides a main shaft sealing device of a medium speed coal mill with good sealing performance to solve the problems in the background art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a main shaft sealing device of a medium-speed coal mill, which has good sealing performance and solves the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a medium speed pulverizer main shaft sealing device that leakproofness is good, includes the sealing device main part, sealing device main part one side is run through the main shaft perpendicularly, the sealing device main part corresponds one side fixed connection fixed plate, the fixed plate with sealing device main part one side is run through perpendicularly the main shaft.
As a still further scheme of the utility model: the outer side of the main shaft is sleeved with a sealing copper sheet, one side of the main shaft and one side of the sealing copper sheet are sleeved with a first flange, one side of the first flange is provided with a radial sealing ring, the first flange and one side of the radial sealing ring are fixedly connected with a first bolt, the first bolt vertically penetrates through a second flange, and the first bolt is convenient to fasten the second flange.
As a still further scheme of the utility model: the sealing device is characterized in that an axial sealing ring is sleeved on the outer side of the sealing device main body, an elastic flange is sleeved on one side of the axial sealing ring, a bearing is installed on one side of the elastic flange, a second bolt is fixedly connected to one side of the bearing, and vertically penetrates through the elastic flange, so that the elastic flange is fastened by the second bolt.
As a still further scheme of the utility model: radial seal circle is the compound rubber material, just radial seal circle diameter does four fifths of first flange diameter is convenient for first flange extrusion radial seal circle.
As a still further scheme of the utility model: the axial sealing ring is made of composite rubber as a main body material, the diameter of the axial sealing ring is nine-tenth of that of the elastic flange, and the elastic flange is convenient to extrude the axial sealing ring.
As a still further scheme of the utility model: the radial sealing ring and the first flange are located on the same axis, and the first flange is matched with the second flange, so that the first flange is connected with the second flange conveniently.
As a still further scheme of the utility model: the bearing and the elastic flange are located on the same axis, the bearing is in a shape like a Chinese character 'tu', and the bearing is convenient to connect the elastic flange.
Compared with the prior art, the utility model has the beneficial effects that:
1. the radial sealing ring is installed to radially seal the main shaft, the radial sealing ring is made of the composite rubber material, so that the space required by the copper sheet sealing is avoided, the sealing performance of the main shaft sealing device is better, pulverized coal and hot air are not easy to leak, energy is saved, potential safety hazards are reduced, the copper sheet sealing can prevent pebble coal from leaking after the internal sealing is ground, and the composite rubber sealing is prevented from being ground by the pebble coal, so that the service cycle of the composite rubber sealing is prolonged, the production efficiency is improved, the labor intensity is reduced, the noise of a coal mill is reduced, and the smooth field production work is facilitated;
2. the axial sealing ring is sleeved on the main shaft, so that the main shaft is axially sealed, the axial sealing adopts composite rubber as a main sealing material and is compressed by the elastic flange, the whole sealing device rotates along with the main shaft, the elastic flange automatically applies pressure after the sealing material is worn, the gap is compensated until the sealing material is completely worn, the sealing device can effectively seal for a long time, the sealing material is made of imported rubber and is further supplemented with other dozens of additives, and the sealing device has the performances of high wear resistance, high temperature resistance, self-lubrication and the like.
Drawings
Fig. 1 is a schematic overall structure diagram of a main shaft sealing device of a medium speed coal mill with good sealing performance;
FIG. 2 is a partial perspective view of a spindle sealing device of a medium speed coal mill with good sealing performance;
fig. 3 is a partial side sectional view of a main shaft sealing device of a medium speed coal mill with good sealing performance.
In the figure: 1. a sealing device body; 2. a main shaft; 3. sealing the copper sheet; 4. a first flange; 5. a radial seal ring; 6. a first bolt; 7. a second flange; 8. an axial seal ring; 9. an elastic flange; 10. a fixing plate; 11. a bearing; 12. and a second bolt.
Detailed Description
Referring to fig. 1 to 3, in an embodiment of the present invention, a main shaft sealing device for a medium speed coal mill with good sealing performance includes a sealing device main body 1, a main shaft 2 vertically penetrates through one side of the sealing device main body 1, a fixing plate 10 is fixedly connected to a corresponding side of the sealing device main body 1, and the fixing plate 10 and one side of the sealing device main body 1 vertically penetrate through the main shaft 2.
In fig. 2 and 3: a sealing copper sheet 3 is sleeved on the outer side of a main shaft 2, a first flange 4 is sleeved on one side of the main shaft 2 and the sealing copper sheet 3, a radial sealing ring 5 is arranged on one side of the first flange 4, a first bolt 6 is fixedly connected with one side of the first flange 4 and the radial sealing ring 5, the first bolt 6 vertically penetrates through a second flange 7, the first bolt 6 is convenient for fastening the second flange 7, an axial sealing ring 8 is sleeved on the outer side of a sealing device main body 1, an elastic flange 9 is sleeved on one side of the sealing device main body 1 and the axial sealing ring 8, a bearing 11 is arranged on one side of the elastic flange 9, a second bolt 12 is fixedly connected with one side of the bearing 11, the second bolt 12 vertically penetrates through the elastic flange 9, the second bolt 12 is convenient for fastening the elastic flange 9, the radial sealing ring 5 is made of composite rubber, the diameter of the radial sealing ring 5 is four fifths of the diameter of the first flange 4, the radial sealing ring 5 is convenient for the first flange 4 to extrude the radial sealing ring 5, the axial sealing ring 8 is made of composite rubber, the diameter of the axial sealing ring 8 is nine tenths of that of the elastic flange 9, so that the elastic flange 9 can extrude the axial sealing ring 8 conveniently, the radial sealing ring 5 and the first flange 4 are positioned on the same axis, the first flange 4 is matched with the second flange 7, the first flange 4 can be connected with the second flange 7 conveniently, the bearing 11 and the elastic flange 9 are positioned on the same axis, and the bearing 11 is in a shape like a Chinese character 'tu', so that the bearing 11 can be connected with the elastic flange 9 conveniently.
The working principle of the utility model is as follows: replacing the sealing device main body 1 of the main shaft 2, dismantling the original sealing device main body 1, loosening the first bolt 6, replacing a new sealing copper sheet 3, sleeving the sealing copper sheet 3 on the main shaft 2, installing the first flange 4, coating a little lubricating grease on the radial sealing ring 5, installing the second flange 7, installing the first bolt 6, fastening the first flange 4 and the second flange 7, extruding the radial sealing ring 5 by the first flange 4 and the second flange 7, realizing the purpose of radial sealing, and solving the problem of frequent replacement of the existing sealing device;
the method comprises the steps of smearing a little lubricating grease on an axial sealing ring 8, sleeving the axial sealing ring 8 on a main shaft 2, installing an elastic flange 9, loosening a second bolt 12, adjusting the elastic force of the elastic flange 9, installing a bearing 11, fastening and installing the bearing 11 and the elastic flange 9 through the second bolt 12, installing a sealing device main body 1, extruding the bearing 11 by the sealing device main body 1, extruding the elastic flange 9 by the bearing 11, extruding the axial sealing ring 8 by the elastic flange 9, achieving the purpose of axial sealing, and solving the problem that the existing sealing device main body 1 is poor in sealing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.
Claims (7)
1. The utility model provides a medium speed pulverizer main shaft sealing device that leakproofness is good, includes sealing device main part (1), its characterized in that, sealing device main part (1) one side is run through main shaft (2) perpendicularly, sealing device main part (1) corresponds one side fixed connection fixed plate (10), fixed plate (10) with sealing device main part (1) one side is run through perpendicularly main shaft (2).
2. The medium speed coal mill main shaft sealing device with good sealing performance according to claim 1, wherein a sealing copper sheet (3) is sleeved on the outer side of the main shaft (2), a first flange (4) is sleeved on one side of the main shaft (2) and the sealing copper sheet (3), a radial sealing ring (5) is installed on one side of the first flange (4), a first bolt (6) is fixedly connected on one side of the first flange (4) and one side of the radial sealing ring (5), and the first bolt (6) vertically penetrates through a second flange (7).
3. The medium speed coal mill spindle sealing device with good sealing performance according to claim 1, wherein an axial sealing ring (8) is sleeved on the outer side of the sealing device main body (1), an elastic flange (9) is sleeved on one side of the sealing device main body (1) and the axial sealing ring (8), a bearing (11) is installed on one side of the elastic flange (9), a second bolt (12) is fixedly connected to one side of the bearing (11), and the second bolt (12) vertically penetrates through the elastic flange (9).
4. The medium speed coal mill main shaft sealing device with good sealing performance according to claim 2, wherein the radial sealing ring (5) is made of composite rubber, and the diameter of the radial sealing ring (5) is four fifths of the diameter of the first flange (4).
5. The medium speed coal mill main shaft sealing device with good sealing performance is characterized in that the axial sealing ring (8) is made of composite rubber as a main body material, and the diameter of the axial sealing ring (8) is nine tenths of that of the elastic flange (9).
6. The main shaft sealing device of the medium speed coal mill with good sealing performance is characterized in that the radial sealing ring (5) and the first flange (4) are located on the same axis, and the first flange (4) is matched with the second flange (7).
7. The medium speed coal mill main shaft sealing device with good sealing performance is characterized in that the bearing (11) and the elastic flange (9) are located on the same axis, and the bearing (11) is in a convex shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121115158.5U CN215410194U (en) | 2021-05-21 | 2021-05-21 | Medium speed coal mill main shaft sealing device that leakproofness is good |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121115158.5U CN215410194U (en) | 2021-05-21 | 2021-05-21 | Medium speed coal mill main shaft sealing device that leakproofness is good |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215410194U true CN215410194U (en) | 2022-01-04 |
Family
ID=79676709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121115158.5U Expired - Fee Related CN215410194U (en) | 2021-05-21 | 2021-05-21 | Medium speed coal mill main shaft sealing device that leakproofness is good |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215410194U (en) |
-
2021
- 2021-05-21 CN CN202121115158.5U patent/CN215410194U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |