CN210661375U - Sealing assembly for lower frame body of coal mill - Google Patents
Sealing assembly for lower frame body of coal mill Download PDFInfo
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- CN210661375U CN210661375U CN201921540568.7U CN201921540568U CN210661375U CN 210661375 U CN210661375 U CN 210661375U CN 201921540568 U CN201921540568 U CN 201921540568U CN 210661375 U CN210661375 U CN 210661375U
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Abstract
The utility model relates to a coal pulverizer lower carriage body seal assembly. The sealing assembly comprises an upper bushing, a lower bushing, a fixed platform and a labyrinth type carbon crystal sealing ring, the fixed platform is fixed on the outer side of a lower frame body of the coal mill, the upper bushing and the lower bushing are arranged above the fixed platform, the upper bushing is arranged on the outer side of the lower bushing, the upper bushing is fixed on the lower frame body of the coal mill, and the bottom of the lower bushing is fixed on the fixed platform; the fixed station below is equipped with the brilliant sealing ring of labyrinth carbon, and the ring of fitting with a contraceptive ring of the brilliant sealing ring of labyrinth carbon passes through the bolt fastening on the fixed station, and the brilliant ring outside of the inside brilliant ring of labyrinth carbon radially is equipped with the recess, and the brilliant ring outside of carbon radially overlaps there is the extrusion spring, and the extrusion spring sets up in the recess, and the air-supply line of coal pulverizer passes the brilliant sealing ring of labyrinth carbon. Seal assembly, stable in structure, sealing performance does not receive the difference in temperature to influence, and sealing performance is good.
Description
Technical Field
The utility model belongs to the technical field of the coal pulverizer device, in particular to coal pulverizer lower carriage body seal assembly.
Background
At present, a medium-speed coal mill produced by the method is widely applied to industries such as electric power, chemical industry and cement, wherein the coal mill in the electric power and chemical industry runs in a positive pressure mode, and in order to prevent coal dust leakage, the sealing performance of the coal mill must be ensured to be good. The original lower frame body sealing ring adopts a carbon crystal sealing ring and labyrinth sealing, but because the carbon crystal is affected by temperature, expands with heat and contracts with cold, when the temperature is low, the carbon crystal sealing ring has poor sealing performance due to the reduction of the volume, thereby causing the phenomena of serious leakage of sealing air, insufficient sealing air pressure and the like, further causing the serious leakage of pulverized coal in the pulverizer and serious pollution to the external working environment.
SUMMERY OF THE UTILITY MODEL
The invention provides a sealing assembly of a lower frame body of a coal mill, which aims to solve the technical problems and is improved on the basis of the existing sealing ring of the lower frame body, so that the transmission part of the lower frame body of the coal mill has good sealing performance and coal dust in the coal mill is prevented from leaking.
The utility model provides a technical scheme that above-mentioned technical problem took is: the sealing assembly is arranged on the outer side of the lower frame body of the coal mill and is characterized by comprising an upper bushing, a lower bushing, a fixed platform and a labyrinth carbon crystal sealing ring, wherein the fixed platform is fixed on the outer side of the lower frame body of the coal mill; the fixed station below is equipped with the brilliant sealing ring of labyrinth carbon, and the ring of fitting with a contraceptive ring of the brilliant sealing ring of labyrinth carbon passes through the bolt fastening on the fixed station, and the brilliant ring outside of the inside brilliant ring of labyrinth carbon radially is equipped with the recess, and the brilliant ring outside of carbon radially overlaps there is the extrusion spring, and the extrusion spring sets up in the recess, and the air-supply line of coal pulverizer passes the brilliant sealing ring of labyrinth carbon.
Furthermore, a sealing ring is arranged at the joint of the air inlet pipe and the labyrinth carbon crystal sealing ring, and the sealing ring is sleeved on the air inlet pipe.
The utility model has the advantages that:
(1) the fixing table is used for erecting a sealing assembly, so that the sealing assembly is favorable for keeping the stability of the whole structure;
(2) the carbon crystal ring deforms under the extrusion of the extrusion spring, the inner side of the carbon crystal ring is tightly attached to the outer side of the lower frame body of the coal mill, and the elastic extrusion of the extrusion spring replenishes a gap between the labyrinth carbon crystal sealing ring and the lower frame body of the coal mill, which is caused by temperature difference.
Seal assembly stable in structure, sealing performance does not receive the difference in temperature to influence, and sealing performance is good.
Drawings
FIG. 1 is a cross-sectional view of a coal pulverizer lower housing seal assembly according to the present invention;
FIG. 2 is an enlarged view of a portion of the carbon wafer ring of the present invention;
in the figure: the coal mill comprises a lower frame body-1, an upper bushing-21, a lower bushing-22, a fixing table-23, a labyrinth type carbon crystal sealing ring-24, a carbon crystal ring-241, an extrusion spring-242, a sealing ring-25 and an air inlet pipe-3.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of the embodiments of the present invention, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
As an example, as shown in fig. 1 and fig. 2, the coal mill lower frame body sealing assembly is arranged outside the coal mill lower frame body 1, the sealing assembly comprises an upper bushing 21, a lower bushing 22, a fixing platform 23 and a labyrinth type carbon crystal sealing ring 24, the annular fixing platform is fixed outside the coal mill lower frame body 1, the upper bushing 21 and the lower bushing 22 are arranged above the fixing platform, the upper bushing 21 is arranged outside the lower bushing 22, the upper bushing 21 is fixed on the coal mill lower frame body 1, the bottom of the lower bushing 22 is fixed on the fixing platform 23, the upper bushing and the lower bushing are overlapped to form a double-layer protective cover with a 90 ° folding angle, so as to form a small gap effect of a labyrinth chamber, and meanwhile, the double-layer protective cover protects the protective cover from primary air washing and avoids the possibility that coal powder enters the chamber under the condition of coal mill coal blockage; the fixed station 23 below is equipped with the brilliant sealing ring 24 of labyrinth carbon, the ring of fitting with a contraceptive ring of the brilliant sealing ring of labyrinth carbon passes through the bolt fastening on fixed station 23, the brilliant ring 241 outside of the inside brilliant ring of labyrinth carbon outside radially is equipped with the recess, the brilliant ring outside of carbon radially overlaps there is extrusion spring 242, extrusion spring sets up in the recess, air-supply line 3 of coal pulverizer passes the brilliant sealing ring 24 of labyrinth carbon, the brilliant ring of carbon takes place to deform under extrusion spring's extrusion, the brilliant ring inboard of carbon tightly pastes the coal pulverizer lower carriage outside, the elasticity extrusion of extrusion spring replenishes the gap between the brilliant sealing ring of labyrinth carbon and the coal pulverizer lower carriage that the difference in temperature caused.
Further, a sealing ring 25 is arranged at the joint of the air inlet pipe 3 and the labyrinth type carbon crystal sealing ring 24, the sealing ring 25 is sleeved on the air inlet pipe 3 and is used for sealing a gap at the joint of the air inlet pipe 3 and the labyrinth type carbon crystal sealing ring 24, and the sealing ring is used for supporting the air inlet pipe.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be dominated by the protection scope of the claims.
Claims (2)
1. The sealing assembly is arranged on the outer side of the lower frame body of the coal mill and is characterized by comprising an upper bushing, a lower bushing, a fixed platform and a labyrinth carbon crystal sealing ring, wherein the fixed platform is fixed on the outer side of the lower frame body of the coal mill; the fixed station below is equipped with the brilliant sealing ring of labyrinth carbon, and the ring of fitting with a contraceptive ring of the brilliant sealing ring of labyrinth carbon passes through the bolt fastening on the fixed station, and the brilliant ring outside of the inside brilliant ring of labyrinth carbon radially is equipped with the recess, and the brilliant ring outside of carbon radially overlaps there is the extrusion spring, and the extrusion spring sets up in the recess, and the air-supply line of coal pulverizer passes the brilliant sealing ring of labyrinth carbon.
2. The coal pulverizer lower frame body seal assembly according to claim 1, wherein a seal ring is arranged at the joint of the air inlet pipe and the labyrinth carbon crystal seal ring, and the seal ring is sleeved on the air inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921540568.7U CN210661375U (en) | 2019-09-17 | 2019-09-17 | Sealing assembly for lower frame body of coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921540568.7U CN210661375U (en) | 2019-09-17 | 2019-09-17 | Sealing assembly for lower frame body of coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210661375U true CN210661375U (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921540568.7U Active CN210661375U (en) | 2019-09-17 | 2019-09-17 | Sealing assembly for lower frame body of coal mill |
Country Status (1)
| Country | Link |
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| CN (1) | CN210661375U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032303A (en) * | 2020-08-11 | 2020-12-04 | 国电青山热电有限公司 | Coal pulverizer lower frame body seal structure |
| CN113803465A (en) * | 2021-09-09 | 2021-12-17 | 中国航发南方工业有限公司 | Vacuum anti-leakage device for main shaft of smelting chamber of vacuum casting furnace |
| CN114412992A (en) * | 2022-01-24 | 2022-04-29 | 天津国能津能热电有限公司 | Coal pulverizer lower frame body seal structure |
-
2019
- 2019-09-17 CN CN201921540568.7U patent/CN210661375U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032303A (en) * | 2020-08-11 | 2020-12-04 | 国电青山热电有限公司 | Coal pulverizer lower frame body seal structure |
| CN113803465A (en) * | 2021-09-09 | 2021-12-17 | 中国航发南方工业有限公司 | Vacuum anti-leakage device for main shaft of smelting chamber of vacuum casting furnace |
| CN113803465B (en) * | 2021-09-09 | 2023-12-01 | 中国航发南方工业有限公司 | Vacuum leakage-proof device for main shaft of smelting chamber of vacuum casting furnace |
| CN114412992A (en) * | 2022-01-24 | 2022-04-29 | 天津国能津能热电有限公司 | Coal pulverizer lower frame body seal structure |
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