CN201121706Y - Gas bag type mechanical sealing device - Google Patents
Gas bag type mechanical sealing device Download PDFInfo
- Publication number
- CN201121706Y CN201121706Y CNU2007200300707U CN200720030070U CN201121706Y CN 201121706 Y CN201121706 Y CN 201121706Y CN U2007200300707 U CNU2007200300707 U CN U2007200300707U CN 200720030070 U CN200720030070 U CN 200720030070U CN 201121706 Y CN201121706 Y CN 201121706Y
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- CN
- China
- Prior art keywords
- air sac
- air
- mechanical seal
- main shaft
- seal device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a mechanical seal device, in particular to an airbag type mechanical seal device which has the technical proposal that a main shaft is externally provided with the mechanical seal device which is mainly composed of a sealed outer housing, an airbag body and a gasket, the sealed outer housing is provided with an air sac sealing hollow cavity along the axial direction of the main shaft, one side of the sealed outer housing is provided with a channel communicated with the air sac sealing hollow cavity, the air sac sealing hollow cavity is internally provided with the airbag body matched with the hollow cavity, the outer end of the sealed outer housing is fixed with the airbag body through the gasket and gland nuts, and the airbag body is tightly contacted with the main shaft under the air pressure. The mechanical sealing device has the advantages that the airbag body is tightly contacted with the main shaft under the air pressure, thus, the structure is simple, the cost is low, the assembly and the maintenance are convenient, and the sealing effect is good, through arranging the detachable gasket, the airbag body is convenient for replacing, so as to possess good economical benefits and social benefits.
Description
One, technical field:
The utility model relates to a kind of mechanical seal device, particularly relates to a kind of air sac type mechanical seal device.
Two, background technique:
Sealing is that mechanical industry is used very common part, its application is very extensive, Sealing commonly used is O type circle, outside framework oil seal, Y-shaped ring, mechanical seal etc., these Sealings are applied to the sealing position of distinct device, good sealing effect is all arranged, and mechanical seal is used on the equipment such as various pump classes, reactor more, but its complex structure, the cost height, the maintain and replace trouble.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, provides a kind of simple in structure, and cost is low, the air sac type mechanical seal device of installation and maintenance convenience and good sealing effect.
Its technological scheme is: at the main shaft peripheral hardware mechanical seal device is arranged, described mechanical seal device mainly is made up of can, air sac, pad and gland nut, be provided with the air sac sealing cavity at described can along the axial direction of main shaft, one side of can is provided with the duct that communicates with the air sac sealing cavity, install the air sac that matches with cavity in the air sac sealing cavity, the outer end of can compresses air sac by pad and gland nut, and air sac closely contacts under air pressure with main shaft.
Described air sac is made up of air bag annular space, charging valve, and the air bag annular space is filled in the air sac sealing cavity and the center is provided with through hole and main shaft forms mechanical seal, and the charging valve of air bag is outside the duct reaches can.
Described air sac sealing cavity is the circular cone sealed cavity, the taper air bag of described air bag for matching with the circular cone sealed cavity.
Described air sac is provided with the air sac separating surface.
The beneficial effects of the utility model are: air sac closely contacts under air pressure with main shaft, and it is simple in structure, and cost is low, convenient and the good sealing effect of installation and maintenance, by being provided with dismountable gland nut and pad, be convenient to the replacing of air sac, have good economic benefit and social benefit.
Four, description of drawings:
Accompanying drawing 1 is the structural representation of air sac of the present utility model;
Accompanying drawing 2 is structural representations of air sac left view of the present utility model;
Accompanying drawing 3 is structural representations of embodiment of the present utility model.
Among the figure: 1, charging valve, 2, the air bag annular space, 3, axis hole, 4, the air sac separating surface, 5, can, 6, pad, 7, gland nut, 8, main shaft, 9, bolt and pad, 10, machine case, 11, the O RunddichtringO.
Five, embodiment:
In conjunction with the accompanying drawings, the utility model will be further described:
Its technological scheme is: at main shaft 8 peripheral hardwares mechanical seal device is arranged, described mechanical seal device mainly by can 5,
Air sac, pad 6 and gland nut 7 are formed, be provided with the air sac sealing cavity at described can 5 along the axial direction of main shaft 8, one side of can 5 is provided with the duct that communicates with the air sac sealing cavity, described air sac sealing cavity is the circular cone sealed cavity, the taper air sac of described air bag for matching with the circular cone sealed cavity, the outer end of can 5 is by gland nut 7 and pad 6 fixed air utricules, air sac closely contacts under air pressure with main shaft 8, and pad 6 centers are provided with axis hole 3 and are convenient to main shaft and pass.
Air sac is made up of air bag, air bag annular space 2, charging valve 1, and air bag annular space 2 is filled in the air sac sealing cavity and the center is provided with through hole and main shaft 8 forms mechanical seal, and the charging valve 1 of air bag is outside the duct reaches can 5.
During use, can 5 is loaded onto O RunddichtringO 11 also to be installed on the machine case 10 with bolt 9, air sac is packed in the can 5, cling at separating surface 4 place's gluings, put into pad 6, tighten gland nut 7, main shaft 8 penetrates wherein, charge into air with pump or other inflators in the air sac, guaranteeing has certain pressure between air bag inwall and the main shaft.
Working principle is: when machine run, to outflow, O type circle 11 does not flow out liquid the mating face sealing of machine 10 and seal casinghousing 5 to the liquid (as wet goods) in the machine along main shaft 8; To outflow, then air sac closely contacts under air pressure with main shaft, and liquid is not flow out, and has so just reached sealing effect along main shaft in the liquid continuation.
After main shaft and air sac wearing and tearing, the pressure of air can guarantee that still main shaft 8 closely contacts with air sac in the air sac, remains sealing state, so its sealing effect is good.
When air sac wears up to inefficacy, the air sac that need more renew.Change also very simply, only need gland nut 7 is backed out, pad 6 is withdrawed from, the air sac destructiveness that lost efficacy is taken off, with new changing, at air sac separating surface 4 place's gluings, compress.Push pad 6 again, tighten gland nut 7 and get final product.
The mechanical seal of this kind air sac type can make it to adapt to the diameter of axle requirement of different machines according to series standardized, the seriation of the diameter of axle.
Claims (4)
1, a kind of air sac type mechanical seal device, at main shaft (8) peripheral hardware mechanical seal device is arranged, it is characterized in that: described mechanical seal device is mainly by can (5), air sac, pad (6) and gland nut (7) are formed, be provided with the air sac sealing cavity at described can (5) along the axial direction of main shaft (8), one side of can (5) is provided with the duct that communicates with the air sac sealing cavity, install the air sac that matches with cavity in the air sac sealing cavity, the outer end of can (5) is by pad (6) and gland nut (7) fixed air utricule, and air sac closely contacts under air pressure with main shaft (8).
2, air sac type mechanical seal device according to claim 1, it is characterized in that: described air sac is made up of air bag annular space (2), charging valve (1), air bag annular space (2) is filled in the air sac sealing cavity and the center is provided with through hole and main shaft (8) forms mechanical seal, and the charging valve of air bag (1) is outside the duct reaches can (5).
3, air sac type mechanical seal device according to claim 2 is characterized in that: described air sac sealing cavity is conical sealed cavity, the taper air bag of described air sac for matching with conical sealed cavity.
4, air sac type mechanical seal device according to claim 1 is characterized in that: described air sac is provided with air sac separating surface (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200300707U CN201121706Y (en) | 2007-10-31 | 2007-10-31 | Gas bag type mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200300707U CN201121706Y (en) | 2007-10-31 | 2007-10-31 | Gas bag type mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201121706Y true CN201121706Y (en) | 2008-09-24 |
Family
ID=40008933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200300707U Expired - Fee Related CN201121706Y (en) | 2007-10-31 | 2007-10-31 | Gas bag type mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201121706Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217260A (en) * | 2013-02-22 | 2013-07-24 | 杭州市特种设备检测院 | Plastic valve pressure testing device |
| CN107448719A (en) * | 2017-09-28 | 2017-12-08 | 丁毅 | Air sac sealing formula ball joint compensator |
| CN107724970A (en) * | 2017-11-07 | 2018-02-23 | 北京泰利新能源科技发展有限公司 | A kind of down-hole hammer crossover sub, down-hole hammer drilling rod and down-hole hammer |
| CN111038936A (en) * | 2019-12-27 | 2020-04-21 | 常熟市神力机械制造有限责任公司 | Helical blade for shield machine screw conveyer |
| CN111532580A (en) * | 2020-03-30 | 2020-08-14 | 遵义宏港机械有限公司 | Matching sealing structure and operation method thereof |
-
2007
- 2007-10-31 CN CNU2007200300707U patent/CN201121706Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217260A (en) * | 2013-02-22 | 2013-07-24 | 杭州市特种设备检测院 | Plastic valve pressure testing device |
| CN103217260B (en) * | 2013-02-22 | 2015-10-21 | 杭州市特种设备检测院 | A kind of Plastic valve pressure testing device |
| CN107448719A (en) * | 2017-09-28 | 2017-12-08 | 丁毅 | Air sac sealing formula ball joint compensator |
| CN107724970A (en) * | 2017-11-07 | 2018-02-23 | 北京泰利新能源科技发展有限公司 | A kind of down-hole hammer crossover sub, down-hole hammer drilling rod and down-hole hammer |
| CN111038936A (en) * | 2019-12-27 | 2020-04-21 | 常熟市神力机械制造有限责任公司 | Helical blade for shield machine screw conveyer |
| CN111532580A (en) * | 2020-03-30 | 2020-08-14 | 遵义宏港机械有限公司 | Matching sealing structure and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080924 Termination date: 20091130 |