CN203847700U - Screw shaft sealing structure - Google Patents
Screw shaft sealing structure Download PDFInfo
- Publication number
- CN203847700U CN203847700U CN201420225833.3U CN201420225833U CN203847700U CN 203847700 U CN203847700 U CN 203847700U CN 201420225833 U CN201420225833 U CN 201420225833U CN 203847700 U CN203847700 U CN 203847700U
- Authority
- CN
- China
- Prior art keywords
- screw shaft
- gland
- screw axis
- sealing
- sealing structure
- 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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- Sealing Devices (AREA)
Abstract
The utility model relates to a screw shaft sealing structure which is mounted on the outer side of a work room and is used for sealing a screw shaft. The screw shaft penetrates into a cavity of the work room to convey materials, the screw shaft sealing structure comprises a shell and a gland, the shell and the gland are arranged on the surface of the outer side of the screw shaft in a surrounding mode from inside to outside, a sealing cavity filled with padding is formed between the shell and the screw shaft, the outer end of the sealing cavity is connected with the gland, an annular hole connected with a nitrogen reverse blowing device is formed in the middle of the sealing cavity, and the inner surface, in contact with the screw shaft, of the gland is provided with a spiral groove. The screw shaft sealing structure has the advantages that working is stable, an operation cycle is long, repeated maintenance in a short period is avoided, and economic benefits are improved.
Description
Technical field
The utility model relates to a kind of screw axis sealing configuration.
Background technique
In many fields such as forestry, chemical industry, pharmacy, general screw axle is carried powder, in production because the seal arrangement poor sealing on screw axis causes powder leakage comparatively serious, on average every day, leakage rate reached 30kg, not only cause economic loss, but also severe contamination environment, make work-yard deposited powder everywhere, there is potential safety hazard, airborne Dust Capacity severe overweight, has certain harm to site operation personnel.Therefore, the leakage problem of screw axis sealing configuration must thoroughly solve.
Model utility content
The technical problems to be solved in the utility model is: based on the problems referred to above, provide a kind of screw axis sealing configuration.
The utility model solves the technological scheme that its technical problem adopts: a kind of screw axis sealing configuration, be installed on the outside of working room, be used for sealing screw axis, screw axis carrys out conveying material in the chamber of working room, comprise the housing, the gland that are located in from inside to outside screw axis outer surface, between housing and screw axis, be provided with the Seal cage of filling filler, the outer end of Seal cage is connected with gland, the middle part of Seal cage is provided with the annular distance that connects nitrogen back-blowing device, and the gland internal surface contacting with screw axis offers spiral helicine groove.
Further, the material of gland is tin bronze.
The beneficial effects of the utility model are: working stability, the operation period is long, has avoided in a short time maintenance repeatedly, has improved economic benefit.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
Wherein: 1. screw axis, 3. gland, 4. annular distance, 5. housing, 6. housing.
Embodiment
By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, and therefore it only shows the formation relevant with the utility model.
A kind of screw axis sealing configuration as shown in Figure 1, be installed on the outside of working room, be used for sealing screw axis 1, screw axis 1 carrys out conveying material in the chamber of working room, comprise the housing 6 that is located in from inside to outside screw axis 1 outer surface, gland 3, between housing 6 and screw axis 1, be provided with the Seal cage of filling filler, the outer end of Seal cage is connected with gland 3, the middle part of Seal cage is provided with the annular distance 4 that connects nitrogen back-blowing device, gland 3 internal surfaces that contact with screw axis 1 offer spiral helicine groove, utilize screw pump principle, when liquid medium is during along leakage-gap seepage, borrow screw action and liquid medium shutoff is gone back to ensure sealing.
The material of gland 3 is tin bronze, and tin bronze has the advantages such as higher wear resistance, elasticity, corrosion resistance and good thermal conductivity.
Sealing configuration, through trying out, putting into operation, is not found powder leakage, only has a little liquid polyethylene to ooze out, and has solved environmental pollution problem.Sealing arrangement works is stable, and the operation period is long, has avoided in a short time maintenance repeatedly, has improved economic benefit.
Taking above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, relevant staff can, not departing from the scope of this model utility technological thought, carry out various change and amendment completely.The technical scope of this model utility is not limited to the content on specification, must determine its technical scope according to claim scope.
Claims (2)
1. a screw axis sealing configuration, be installed on the outside of working room, be used for sealing screw axis (1), screw axis (1) carrys out conveying material in the chamber of working room, it is characterized in that: comprise the housing (6) that is located in from inside to outside screw axis (1) outer surface, gland (3), between housing (6) and screw axis (1), be provided with the Seal cage of filling filler, the outer end of Seal cage is connected with gland (3), the middle part of Seal cage is provided with the annular distance (4) that connects nitrogen back-blowing device, gland (3) internal surface contacting with screw axis (1) offers spiral helicine groove.
2. a kind of screw axis sealing configuration according to claim 1, is characterized in that: the material of described gland (3) is tin bronze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225833.3U CN203847700U (en) | 2014-05-05 | 2014-05-05 | Screw shaft sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225833.3U CN203847700U (en) | 2014-05-05 | 2014-05-05 | Screw shaft sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847700U true CN203847700U (en) | 2014-09-24 |
Family
ID=51560722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420225833.3U Expired - Fee Related CN203847700U (en) | 2014-05-05 | 2014-05-05 | Screw shaft sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994223A (en) * | 2014-05-05 | 2014-08-20 | 王敏 | Screw shaft sealing structure |
-
2014
- 2014-05-05 CN CN201420225833.3U patent/CN203847700U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994223A (en) * | 2014-05-05 | 2014-08-20 | 王敏 | Screw shaft sealing structure |
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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 |
Granted publication date: 20140924 Termination date: 20150505 |
|
| EXPY | Termination of patent right or utility model |