CN204284445U - A kind of seawater coarse-grain filtering device back washing device rotation axis seal assembly - Google Patents
A kind of seawater coarse-grain filtering device back washing device rotation axis seal assembly Download PDFInfo
- Publication number
- CN204284445U CN204284445U CN201420717775.6U CN201420717775U CN204284445U CN 204284445 U CN204284445 U CN 204284445U CN 201420717775 U CN201420717775 U CN 201420717775U CN 204284445 U CN204284445 U CN 204284445U
- Authority
- CN
- China
- Prior art keywords
- stuffing box
- box gland
- running shaft
- rotation axis
- seal assembly
- 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 discloses a kind of seawater coarse-grain filtering device back washing device rotation axis seal assembly being located at tank body opening, it to comprise by Flange joint in tank body opening stuffing box gland, is sheathed on running shaft inside described stuffing box gland, described running shaft has the annular shaft shoulder abutted with stuffing box gland interior edge face, the stage casing of described stuffing box gland has decompressing groove, and the two end part of stuffing box gland coordinate with running shaft and are socketed and are provided with seal ring.Decompressing groove is set by the stage casing at stuffing box gland, decreases the contact position between stuffing box gland and running shaft, the quality of fit between stuffing box gland and running shaft is improved, further increases the sealability between stuffing box gland end and the running shaft shaft shoulder.In the tip portion of stuffing box gland and bottom, seal ring is set, further increase the sealing part between stuffing box gland and running shaft, decompressing groove can reduce rapidly effusion pressure thus avoid further seepage, and then promotes the sealability of rotation axis seal assembly.
Description
Technical field
The utility model relates to low-speed rotary shaft field of sealing technology, particularly relates to a kind of seawater coarse-grain filtering device back washing device rotation axis seal assembly.
Background technique
At present, seawater coarse-grain filtering device back washing device rotation axis seal place, oil field is that copper sheathing and stainless steel shaft step carry out plane sealing, belongs to low speed rotation shaft seal field.In rotation axis seal technology, running shaft does low speed rotation, and stuffing box gland is fixed by socket, and by the machining accuracy of two end faces that contact with each other, ensures its sealing effect, and when running shaft does low speed rotation, rotational speed is 0.5-1RPM, can play seal action.In tank, medium is seawater, because corrosive properly is strong, stuffing box gland is copper material, long immersion and washing away easily is leaked by sea water intrusion, copper sheathing seal face is often corroded and leaks, each stuffing box gland occurs after using 6 months that seepage need be carried out replacing and need be changed a copper sheathing sealing average half a year, not only increases field maintenance workload, also brings hidden danger and unstability to produced on-site.
Summary of the invention
For the deficiencies in the prior art, the technical problems to be solved in the utility model is to provide a kind of long service life sealability better seawater coarse-grain filtering device back washing device rotation axis seal assembly.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of seawater coarse-grain filtering device back washing device rotation axis seal assembly, be located at tank body opening, described rotation axis seal assembly to comprise by Flange joint in tank body opening stuffing box gland, is sheathed on running shaft inside described stuffing box gland, described running shaft has the annular shaft shoulder abutted with stuffing box gland interior edge face, the stage casing of described stuffing box gland has decompressing groove, and the two end part of stuffing box gland coordinate with running shaft and are socketed and are provided with seal ring.
One as the technological scheme of the utility model seawater coarse-grain filtering device back washing device rotation axis seal assembly is improved, and described stuffing box gland is copper body.
One as the technological scheme of the utility model seawater coarse-grain filtering device back washing device rotation axis seal assembly is improved, and is provided with gasket seal between the flange of described stuffing box gland and tank body opening flange.
One as the technological scheme of the utility model seawater coarse-grain filtering device back washing device rotation axis seal assembly is improved, and described decompressing groove is the annular hollow gap between stuffing box gland and running shaft.
The beneficial effects of the utility model are: arrange decompressing groove by the stage casing at stuffing box gland, decrease the contact position between stuffing box gland and running shaft, quality of fit between stuffing box gland and running shaft is improved, further increases the sealability between stuffing box gland end and the running shaft shaft shoulder.In the tip portion of stuffing box gland and bottom, seal ring is set, further increase the sealing part between stuffing box gland and running shaft, decompressing groove can reduce rapidly effusion pressure thus avoid further seepage, and then promotes the sealability of rotation axis seal assembly.
Accompanying drawing explanation
Fig. 1 is the structural representation that the embodiment of a kind of seawater coarse-grain filtering device of the utility model back washing device rotation axis seal assembly installs.
Embodiment
Embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of seawater coarse-grain filtering device of the utility model back washing device rotation axis seal assembly, be located at tank body 10 opening, described rotation axis seal assembly comprises and is connected to tank body 10 opening stuffing box gland 15 by flange 12, is sheathed on running shaft 20 inside described stuffing box gland 15, described running shaft 20 has the annular shaft shoulder 22 abutted with stuffing box gland 15 interior edge face, the stage casing of described stuffing box gland 15 has decompressing groove 16, and the two end part of stuffing box gland 15 coordinate with running shaft 20 and are socketed and are provided with seal ring 25.By arranging decompressing groove 16 in the stage casing of stuffing box gland 15, decrease the contact position between stuffing box gland 15 and running shaft 20, quality of fit between stuffing box gland 15 and running shaft 20 is improved, further increase the sealability between stuffing box gland 15 end and running shaft 20 shaft shoulder 22, ensure the sealing of dynamic rotary process.In the tip portion of stuffing box gland 15 and bottom, seal ring 25 is set, further increase the sealing part between stuffing box gland 15 and running shaft 20, decompressing groove 16 can reduce rapidly effusion pressure thus avoid further seepage, and then promotes the sealability of rotation axis seal assembly.
More preferably, described stuffing box gland 15 is copper bodies, and copper sheathing body is easy to generation deformation and axle accessory closely forms sealing configuration, makes sealability more superior.
More preferably, being provided with gasket seal 18 between the flange of described stuffing box gland 15 and tank body 10 opening flange, preventing from, between stuffing box gland 15 and tank body 10, seepage occurs, is a kind of standstill seal structure.
More preferably, described decompressing groove 16 is the annular hollow gaps between stuffing box gland 15 and running shaft 20, thus in this segment structure, stuffing box gland 15 is separated with running shaft 20 and does not contact, thus this segment structure body do not affect between stuffing box gland 15 and running shaft 20 in conjunction with precision, thus decrease stuffing box gland 15 with running shaft 20 in conjunction with Affecting Factors of Accuracy, make being improved in conjunction with precision between stuffing box gland 15 and running shaft 20.
Above disclosedly be only preferred embodiment of the present utility model, certainly can not limit the interest field of the utility model with this, therefore according to the equivalent variations that the utility model claim is done, still belong to the scope that the utility model is contained.
Claims (4)
1. a seawater coarse-grain filtering device back washing device rotation axis seal assembly, be located at tank body opening, it is characterized in that: described rotation axis seal assembly to comprise by Flange joint in tank body opening stuffing box gland, is sheathed on running shaft inside described stuffing box gland, described running shaft has the annular shaft shoulder abutted with stuffing box gland interior edge face, the stage casing of described stuffing box gland has decompressing groove, and the two end part of stuffing box gland coordinate with running shaft and are socketed and are provided with seal ring.
2. seawater coarse-grain filtering device back washing device rotation axis seal assembly according to claim 1, is characterized in that: described stuffing box gland is copper body.
3. seawater coarse-grain filtering device back washing device rotation axis seal assembly according to claim 1, is characterized in that: be provided with gasket seal between the flange of described stuffing box gland and tank body opening flange.
4. seawater coarse-grain filtering device back washing device rotation axis seal assembly according to claim 1, is characterized in that: described decompressing groove is the annular hollow gap between stuffing box gland and running shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420717775.6U CN204284445U (en) | 2014-11-26 | 2014-11-26 | A kind of seawater coarse-grain filtering device back washing device rotation axis seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420717775.6U CN204284445U (en) | 2014-11-26 | 2014-11-26 | A kind of seawater coarse-grain filtering device back washing device rotation axis seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204284445U true CN204284445U (en) | 2015-04-22 |
Family
ID=52867606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420717775.6U Expired - Fee Related CN204284445U (en) | 2014-11-26 | 2014-11-26 | A kind of seawater coarse-grain filtering device back washing device rotation axis seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204284445U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107803359A (en) * | 2017-12-04 | 2018-03-16 | 马鞍山瑞琪机械设备制造有限公司 | A kind of mechanical washing device |
-
2014
- 2014-11-26 CN CN201420717775.6U patent/CN204284445U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107803359A (en) * | 2017-12-04 | 2018-03-16 | 马鞍山瑞琪机械设备制造有限公司 | A kind of mechanical washing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CNOOC (China) Limited,Zhanjiang Branch Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Address before: 100010 China oil tower, 25 Chaoyangmen North Street, Dongcheng District, Beijing Co-patentee before: CNOOC (China) Limited,Zhanjiang Branch Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. |
|
| 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: 20150422 Termination date: 20211126 |