CN203784289U - Bolt sealing device for cylinder and coal pulverizer with same - Google Patents
Bolt sealing device for cylinder and coal pulverizer with same Download PDFInfo
- Publication number
- CN203784289U CN203784289U CN201420153646.9U CN201420153646U CN203784289U CN 203784289 U CN203784289 U CN 203784289U CN 201420153646 U CN201420153646 U CN 201420153646U CN 203784289 U CN203784289 U CN 203784289U
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- cylindrical shell
- bolt
- sealing device
- seal washer
- sleeve
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Abstract
The utility model provides a bolt sealing device for a cylinder and a coal pulverizer with the same. The bolt sealing device comprises a bolt (20), a nut (30), a sealing washer (40) and a sleeve (50). The bolt (20) comprises a bolt head (21) and a bolt rod (22), wherein the bolt head (21) is disposed in the cylinder (10) and the bolt rod (22) passes through a through hole of the cylinder (10). The nut (30) sleeves the bolt rod (22) and is located on the outer side of the cylinder (10). The sealing washer (40) sleeves the bolt rod (22) and located between the outer wall of the cylinder (10) and the nut (30). The sleeve (50) is put round the outer side of the sealing washer (40) for limiting deformation of the sealing washer (40). The bolt sealing device has the advantages that the sleeve can limit the outward deformation of the sealing washer in the radial direction of the bolt rod so that the sealing washer can be attached to the outer wall of the cylinder tightly, the sealing washer can furthest function in terms of sealing and the sealing effect is better.
Description
Technical field
The utility model relates to coal-grinding equipment technical field, in particular to a kind of cylindrical shell bolt sealing device and have its coal pulverizer.
Background technique
At present, coal pulverizer is by coal crusher and wears into the machinery of coal dust, and it is the important supplementary equipment of pulverized coal furnace.In prior art, during coal pulverizer work, abrading-ball is larger to the impact of coal pulverizer cylindrical shell and bolt, leak coal slurry more serious, so the cylindrical shell of coal pulverizer need to adopt seal arrangement from bolt hole.Generally speaking, coal pulverizer cylindrical shell adopts bolt sealing device.As shown in Figure 1, coal pulverizer cylindrical shell bolt sealing device comprises liner plate 2, bolt 6, rubber pad 3, steel pad 4 and nut 5.Wherein liner plate 2 is positioned at the inner side of cylindrical shell 1, and remaining part is positioned at the outside of cylindrical shell 1.Liner plate 2 has attachment hole, and cylindrical shell 1 has the through hole corresponding with attachment hole position.Bolt 6 comprises bolt head and bolt shank, and bolt head is positioned at the attachment hole of liner plate 2, and bolt shank is located in the attachment hole of liner plate 2 and the through hole of cylindrical shell 1.Rubber pad 3, steel pad 4 and nut 5 are set on bolt shank successively.Nut 5 is spacing between nut 5 and the outer wall of cylindrical shell 1 by rubber pad 3 and steel pad 4, and steel pad 4 is spacing between steel pad 4 and the outer wall of cylindrical shell 1 by rubber pad 3.
When coal pulverizer is worked, cylindrical shell 1 is in rotation status, between bolt 6 and rubber pad 3, there is mutual extruding force, rubber pad 3 is subject to one along the bolt extruding force F3 of bolt shank radial direction, between rubber pad 3 and cylindrical shell 1 and between rubber pad 3 and steel pad 4, also have mutual extruding force, rubber pad 3 is subject to along the barrel wall extruding force F2 and the steel pad extruding force F1 that are parallel to bolt shank axial direction.Rubber pad 3 is under steel pad extruding force F1, barrel wall extruding force F2 and tri-power actings in conjunction of bolt extruding force F3, rubber pad 3 is along bolt shank radially outward deformation S, laminating between rubber pad 3 and cylindrical shell 1 outer wall is not tight, owing to having gap between the bolt hole in cylindrical shell 1 and bolt 6, cause bolt hole and the coal slurry between bolt 6 in cylindrical shell 1 outside to coal pulverizer by the slot leakage between cylindrical shell 1 outer wall and rubber pad 3.
Model utility content
The utility model aims to provide a kind of cylindrical shell bolt sealing device and has its coal pulverizer, to solve bolt seal in prior art, does not sternly cause leaking the problem of coal slurry.
To achieve these goals, according to an aspect of the present utility model, provide a kind of cylindrical shell bolt sealing device, having comprised: bolt, comprise bolt head and bolt shank, bolt head is positioned at cylindrical shell, and bolt shank is located in the through hole of cylindrical shell; Nut, is set on bolt shank and is positioned at the outside of cylindrical shell; Seal washer, is set on bolt shank and between the outer wall and nut of cylindrical shell; Sleeve, is set in seal washer outside with the distortion of restriction seal washer.
Further, the internal diameter of sleeve is less than the external diameter of nut.
Further, seal washer is rubber pad.
Further, bolt is covering of the fan bolt.
Further, also comprise liner plate, liner plate is positioned at the inner side of cylindrical shell, and liner plate has attachment hole, in the direction in the inner side along cylindrical shell to outside, attachment hole comprises the first straight hole section, taper hole section and the second straight hole section successively, and bolt head is arranged in the first straight hole section and taper hole section.
Further, also comprise packing ring, gasket sleeve is located on bolt shank and between seal washer and nut.
Further, packing ring comprises body and radial flange, and jacket casing is located at the outside of seal washer and body.
Further, one end of sleeve and radial flange butt, have distance between the other end of sleeve and cylindrical shell.
Further, packing ring is steel pad.
According on the other hand of the present utility model, a kind of coal pulverizer is provided, the cylindrical shell bolt sealing device that comprises cylindrical shell and coordinate with cylindrical shell, cylindrical shell bolt sealing device is above-mentioned cylindrical shell bolt sealing device.
Application the technical solution of the utility model, jacket casing is located at seal washer outside, and sleeve can retrain seal washer and outwards be out of shape along the radial direction of bolt shank.Particularly, when coal pulverizer is worked, cylindrical shell, in rotation status, has mutual extruding force between bolt and seal washer, and seal washer is subject to one along the bolt extruding force of bolt shank radial direction.Between seal washer and cylindrical shell and between seal washer and nut, also there are mutual extruding force, seal washer to be subject to along the barrel wall extruding force and the nut extruding force that are parallel to bolt shank axial direction.Jacket casing is located at seal washer outside, and seal washer is subject to the restraining sleeve power along bolt shank radial direction.Seal washer is under the acting in conjunction of steel pad extruding force, barrel wall extruding force, bolt extruding force and four power of restraining sleeve power, seal washer can closely be fitted with the outer wall of cylindrical shell, brought into play to greatest extent the seal action of seal washer, sealing effect is better, and then has fundamentally solved the problem that coal slurry leaks.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation of cylindrical shell bolt sealing device of the prior art;
Fig. 2 shows according to the embodiment's of cylindrical shell bolt sealing device of the present utility model structural representation;
Fig. 3 shows the generalized section of the cylindrical shell bolt sealing device of Fig. 2; And
Fig. 4 shows the cut-away section schematic diagram of the cylindrical shell bolt sealing device of Fig. 2.
Above-mentioned accompanying drawing comprises the following drawings mark:
1, cylindrical shell; 2, liner plate; 3, rubber pad; 4, steel pad; 5, nut; 6, bolt; 10, cylindrical shell; 20, bolt; 21, bolt head; 22, bolt shank; 30, nut; 40, seal washer; 50, sleeve; 60, liner plate; 70, packing ring; 71, body; 72, radial flange.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
As shown in Figures 2 and 3, the cylindrical shell bolt sealing device of the present embodiment comprises: bolt 20, nut 30, seal washer 40 and sleeve 50.Bolt 20 comprises bolt head 21 and bolt shank 22, bolt head 21 is positioned at cylindrical shell 10, bolt shank 22 is located in the through hole of cylindrical shell 10, nut 30 is set on bolt shank 22 and is positioned at the outside of cylindrical shell 10, seal washer 40 is set on bolt shank 22 and between the outer wall and nut 30 of cylindrical shell 10, sleeve 50 is set in seal washer 40 outsides, to limit the distortion of seal washer 40.
While applying the cylindrical shell bolt sealing device of the present embodiment, sleeve 50 is set in seal washer 40 outsides, and sleeve 50 can retrain seal washer 40 and outwards be out of shape along the radial direction of bolt shank 22.Particularly, when coal pulverizer is worked, cylindrical shell 10, in rotation status, has mutual extruding force between bolt 20 and seal washer 40, and seal washer 40 is subject to one along the bolt extruding force F3 of bolt shank 22 radial direction.Between seal washer 40 and cylindrical shell 10 and between seal washer 40 and nut 30, also have mutual extruding force, seal washer 40 is subject to along the barrel wall extruding force F2 and the nut extruding force F1 that are parallel to bolt shank 22 axial directions.Sleeve 50 is set in seal washer 40 outsides, and seal washer 40 is subject to the restraining sleeve power F4 along bolt shank 22 radial direction.Seal washer 40 is under the acting in conjunction of steel pad extruding force F1, barrel wall extruding force F2, bolt extruding force F3 and tetra-power of restraining sleeve power F4, seal washer 40 can closely be fitted with the outer wall of cylindrical shell 10, brought into play to greatest extent the seal action of seal washer 40, sealing effect is better, and then has fundamentally solved the problem that coal slurry leaks.
In the present embodiment, the internal diameter of sleeve 50 is less than the external diameter of nut 30.Limited like this sleeve 50 towards the direction motion away from cylindrical shell 10, the seal action of seal washer 40 is more remarkable.
In the present embodiment, seal washer 40 is rubber pad.Rubber pad is flexible, has good seal action.Certainly, seal washer can be also other the seal washer of material.
In the present embodiment, in order to prevent the rotation of bolt 20 in cylindrical shell 10, bolt 20 is covering of the fan, and bolt 20 can be synchronizeed and rotate with cylindrical shell 10 like this.
In the present embodiment, cylindrical shell bolt sealing device also comprises liner plate 60, liner plate 60 is positioned at the inner side of cylindrical shell 10, liner plate 60 has attachment hole, in the direction in the inner side along cylindrical shell 10 to outside, attachment hole comprises the first straight hole section, taper hole section and the second straight hole section successively, and bolt head 21 is arranged in the first straight hole section and taper hole section.Liner plate 60 can avoid coal cinder directly to clash into cylindrical shell 10, and liner plate 60 can be protected cylindrical shell 10 better.Attachment hole can facilitate the installation of covering of the fan bolt, simple in structure, convenience quick for installation.
In the present embodiment, cylindrical shell bolt sealing device also comprises packing ring 70, and packing ring 70 is set on bolt shank 22 and between seal washer 40 and nut 30.At this moment, seal washer 40 can be subject to packing ring extruding force F1, and packing ring 70 can be adjacent to seal washer 40 outer wall of cylindrical shell 10 more closely, and sealability is better.
In the present embodiment, as shown in Figure 4, packing ring 70 comprises body 71 and radial flange 72, and sleeve 50 is set in the outside of seal washer 40 and body 71.In the present embodiment, one end of sleeve 50 and radial flange 72 butts, have distance between the other end of sleeve 50 and cylindrical shell 10.Cylindrical shell 10 and radial flange 72 can be limited in sleeve 50 between cylindrical shell 10 and radial flange 72, and sleeve 50 can only be moved between cylindrical shell 10 and radial flange 72, make like this sleeve 50 always binding to seal washer 40, and sealing effect is more remarkable.In the present embodiment, packing ring 70 is steel pad.Certainly, packing ring can be also other the packing ring of material.
The application also provides a kind of coal pulverizer, according to embodiment's (not shown) of the application's coal pulverizer, comprises cylindrical shell 10 and the cylindrical shell bolt sealing device coordinating with cylindrical shell 10, and cylindrical shell bolt sealing device is above-mentioned cylindrical shell bolt sealing device.Sleeve 50 can retrain seal washer 40 and outwards be out of shape along the radial direction of bolt shank 22.Particularly, when coal pulverizer is worked, cylindrical shell 10, in rotation status, has mutual extruding force between bolt 20 and seal washer 40, and seal washer 40 is subject to one along the bolt extruding force F3 of bolt shank 22 radial direction.Between seal washer 40 and cylindrical shell 10 and between seal washer 40 and nut 30, also have mutual extruding force, seal washer 40 is subject to along the barrel wall extruding force F2 and the nut extruding force F1 that are parallel to bolt shank 22 axial directions.Sleeve 50 is set in seal washer 40 outsides, and seal washer 40 is subject to the restraining sleeve power F4 along bolt shank 22 radial direction.Seal washer 40 is under the acting in conjunction of steel pad extruding force F1, barrel wall extruding force F2, bolt extruding force F3 and tetra-power of restraining sleeve power F4, seal washer 40 can closely be fitted with the outer wall of cylindrical shell 10, brought into play to greatest extent the seal action of seal washer 40, sealing effect is better, and then has fundamentally solved the problem that coal slurry leaks.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a cylindrical shell bolt sealing device, comprising:
Bolt (20), comprises bolt head (21) and bolt shank (22), and described bolt head (21) is positioned at cylindrical shell (10), and described bolt shank (22) is located in the through hole of described cylindrical shell (10);
Nut (30), is set in the outside that described cylindrical shell (10) were gone up and be positioned to described bolt shank (22);
Seal washer (40), is set in described bolt shank (22) above and is positioned between the outer wall and described nut (30) of described cylindrical shell (10);
It is characterized in that, described cylindrical shell bolt sealing device also comprises:
Sleeve (50), is set in described seal washer (40) outside to limit the distortion of described seal washer (40).
2. cylindrical shell bolt sealing device according to claim 1, is characterized in that, the internal diameter of described sleeve (50) is less than the external diameter of described nut (30).
3. cylindrical shell bolt sealing device according to claim 1, is characterized in that, described seal washer (40) is rubber pad.
4. cylindrical shell bolt sealing device according to claim 1, is characterized in that, described bolt (20) is covering of the fan bolt.
5. cylindrical shell bolt sealing device according to claim 1, it is characterized in that, also comprise liner plate (60), described liner plate (60) is positioned at the inner side of described cylindrical shell (10), described liner plate (60) has attachment hole, the above attachment hole of direction in inner side to the outside along described cylindrical shell (10) comprises the first straight hole section, taper hole section and the second straight hole section successively, and described bolt head (21) is arranged in described the first straight hole section and described taper hole section.
6. cylindrical shell bolt sealing device according to claim 1, is characterized in that, also comprises packing ring (70), and described packing ring (70) is set in described bolt shank (22) above and is positioned between described seal washer (40) and described nut (30).
7. cylindrical shell bolt sealing device according to claim 6, is characterized in that, described packing ring (70) comprises body (71) and radial flange (72), and described sleeve (50) is set in the outside of described seal washer (40) and described body (71).
8. cylindrical shell bolt sealing device according to claim 7, is characterized in that, one end of described sleeve (50) and described radial flange (72) butt, have distance between the other end of described sleeve (50) and described cylindrical shell (10).
9. cylindrical shell bolt sealing device according to claim 6, is characterized in that, described packing ring (70) is steel pad.
10. a coal pulverizer, comprises cylindrical shell (10) and the cylindrical shell bolt sealing device coordinating with described cylindrical shell (10), it is characterized in that, described cylindrical shell bolt sealing device is the cylindrical shell bolt sealing device described in any one in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153646.9U CN203784289U (en) | 2014-03-31 | 2014-03-31 | Bolt sealing device for cylinder and coal pulverizer with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153646.9U CN203784289U (en) | 2014-03-31 | 2014-03-31 | Bolt sealing device for cylinder and coal pulverizer with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203784289U true CN203784289U (en) | 2014-08-20 |
Family
ID=51320478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420153646.9U Expired - Fee Related CN203784289U (en) | 2014-03-31 | 2014-03-31 | Bolt sealing device for cylinder and coal pulverizer with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203784289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060384A (en) * | 2021-09-30 | 2022-02-18 | 中国神华煤制油化工有限公司 | Bolt sealing structure of rod mill barrel and rod mill |
-
2014
- 2014-03-31 CN CN201420153646.9U patent/CN203784289U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060384A (en) * | 2021-09-30 | 2022-02-18 | 中国神华煤制油化工有限公司 | Bolt sealing structure of rod mill barrel and rod mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20180331 |