CN203374832U - Double-wedge type self-tensioning structure of Y-type stop valve upper seal - Google Patents
Double-wedge type self-tensioning structure of Y-type stop valve upper seal Download PDFInfo
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- CN203374832U CN203374832U CN201320431562.2U CN201320431562U CN203374832U CN 203374832 U CN203374832 U CN 203374832U CN 201320431562 U CN201320431562 U CN 201320431562U CN 203374832 U CN203374832 U CN 203374832U
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- conical surface
- cone angle
- valve
- selfsealings
- seal
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Abstract
The utility model provides a double-wedge type self-tensioning structure of a Y-type stop valve upper seal. The double-wedge type self-tensioning structure comprises a valve body, a valve rod and a sealing ring. The valve rod is arranged inside the valve body, the sealing ring is of an inversed cone structure, an inversed-cone-shaped inner hole is formed in the sealing ring, and the valve rod is inserted in the inner hole of the sealing ring. The outer conical surface of the sealing ring is provided with a first self-sealing conical surface and a valve body guiding conical surface, and the valve body is correspondingly provided with a second self-sealing conical surface, the inner hole of the sealing ring is provided with a first inversed sealing conical surface and a valve body guiding conical surface, and the valve rod is correspondingly provided with a second inversed sealing conical surface. According to the double-wedge type self-tensioning structure of the Y-type stop valve upper seal, the problem that the Y-type stop valve upper seal is prone to losing efficiency is solved. The sealing ring is in mutual contact with the valve rod and the valve body to form wedge type sealing surfaces, therefore, the sealing performance of a Y-type stop valve is improved, the first upper seal is formed, the sealing pressure of valve padding is relieved, and the Y-type stop valve is provided with the reliable and effective upper seal.
Description
Technical field
The utility model relates to a kind of Y-shaped cut-off valve.Sealing double wedge type self-tightening structure on a kind of Y-shaped cut-off valve specifically.
Background technique
Have in the market the Y-shaped cut-off valve manufactured and designed now, the sealing on its valve rod is all that the structure of dependence compression filler realizes, the rear compression of long-term use filler is easily destroyed, and then causes the sealability decline of stop valve.Existing valve rod self sealing structure, be not the wedge-type self-tightening structure simultaneously, therefore can not be for 4500LB ultrahigh pressure operating mode.
Summary of the invention
The utility model, for the defect existed in prior art, provides sealing double wedge type self-tightening structure on a kind of Y-shaped cut-off valve, improves the sealability of Y-shaped cut-off valve.
The utility model is achieved through the following technical solutions:
Sealing double wedge type self-tightening structure on a kind of Y-shaped cut-off valve, comprise valve body, valve rod and seal ring, described valve rod is arranged on described valve inner, described seal ring is the inverted cone structure, described seal ring is provided with obconic endoporus, described seal ring is fixed on described valve body by gland nut, and described valve rod inserts in the endoporus of described seal ring;
The male cone (strobilus masculinus) of described seal ring is provided with the first selfsealings conical surface and the valve body guiding conical surface, the described first selfsealings conical surface is to there being the first selfsealings cone angle 1, described valve body guide cone is in the face of valve body guiding cone angle gamma 1 should be arranged, and described valve body guiding cone angle gamma 1 is greater than described the first selfsealings cone angle 1;
Be provided with the first back seal conical surface and the stem guiding conical surface on the surface of the endoporus of described seal ring, the described first back seal conical surface is to there being the first back seal cone angle beta 1, the described stem guiding conical surface is to stem guiding cone angle gamma 2 should be arranged, and described stem guiding cone angle gamma 2 is greater than described the first back seal cone angle beta 1.
Preferably, described valve body is provided with the second selfsealings conical surface corresponding to the first selfsealings conical surface of described seal ring, and the described second selfsealings conical surface is to the second selfsealings cone angle 2 should be arranged, and described the first selfsealings cone angle 1 is less than the second selfsealings cone angle 2.
Further preferably, described the second selfsealings cone angle 2 is 0.5 °～1 ° with the angle difference of described the first selfsealings cone angle 1.
Preferably, described valve rod is provided with the second back seal conical surface corresponding to the first back seal conical surface of described seal ring, and the described second back seal conical surface is to the second back seal cone angle beta 2 should be arranged, and described the first back seal cone angle beta 1 is less than the second back seal cone angle beta 2.
Further preferably, described the second back seal cone angle beta 2 is 0.5 °～1 ° with the angle difference of described the first back seal cone angle beta 1.
The utility model also provides a kind of Y-shaped cut-off valve, and it comprises sealing double wedge type self-tightening structure on above-mentioned Y-shaped cut-off valve.
The utility model is compared with existing stop valve sealing configuration, and its effect is positive:
1, on the valve opening of stop valve during the work of sealing wedge-type self-tightening structure, the first back seal conical surface that the second back seal conical surface on valve rod contacts with the endoporus of the seal ring wedging of combining closely under the effect of pressure medium, thereby formation back seal; The now first selfsealings conical surface of the second selfsealings conical surface on valve body and the seal ring wedging of combining closely under the effect of medium equally, form selfsealings, makes valve rod without external leakage;
2, the differential seat angle of 0.5 °～1 ° existed between the first selfsealings cone angle 1 and the second selfsealings cone angle 2 and the first back seal cone angle beta 1 and the second back seal cone angle beta 2, can form the wedge-type potted line under the effect of medium makes valve body and selfsealings face between seal ring and the inverse sealing face of valve rod between seal ring can be combined more closely wedging, utilize the medium masterpiece to be used in the structural component of wedge-type and form selfsealings power and back seal power, make between valve body, valve rod and seal ring to form sealing more reliably;
3, after in employing, sealing wedge-type self-tightening structure is sealed, filler only, as the 2nd road sealing, has avoided filler to be etched, and has improved the working life of filler;
4, the utility model is safely among the upper sealing configuration for ultrahigh pressure (4500LB) valve.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model seal ring.
Fig. 2 is A place partial enlarged drawing in the utility model Fig. 1.
Fig. 3 is the structural representation of the utility model seal ring on valve body.
Fig. 4 is B place partial enlarged drawing in the utility model Fig. 3.
Fig. 5 is the whole assembling of the utility model Y-shaped cut-off valve schematic diagram.
Wherein 1 is valve body, and 2 is valve rod, and 3 is seal ring, 4 is endoporus, and 11 is the second selfsealings conical surface, and 21 is the second back seal conical surface, 31 is the first selfsealings conical surface, and 32 is the valve body guiding conical surface, and 33 is the first back seal conical surface, 34 is the stem guiding conical surface, and α 1 is the first selfsealings cone angle, and α 2 is the second selfsealings cone angle, β 1 is the first back seal cone angle, β 2 is the second back seal cone angle, and γ 1 is valve body guiding cone angle, and γ 2 is the stem guiding cone angle.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can more be become apparent, below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Set forth detail in the following description so that fully understand the utility model.But the utility model can be different from alternate manner described here and implements with multiple, and those skilled in the art can be in the situation that do similar popularization without prejudice to the utility model intension.Therefore the utility model is not subject to the restriction of following public embodiment.
Referring to Fig. 1 to Fig. 5, sealing double wedge type self-tightening structure on a kind of Y-shaped cut-off valve, comprise valve body 1, valve rod 2 and seal ring 3, valve rod 2 is arranged on the inside of valve body 1, seal ring 3 is the inverted cone structure, be provided with obconic endoporus 4 in seal ring 3, valve rod 2 inserts the endoporus 4 of seal ring 3, and seal ring 3 is fixed on valve body 1 by gland nut;
The male cone (strobilus masculinus) of seal ring 3 is provided with the first selfsealings conical surface 31 and the valve body guiding conical surface 32, first 31 pairs of the selfsealings conical surfaces should have the first selfsealings cone angle 1,32 pairs of the conical surfaces of valve body guiding should have valve body guiding cone angle gamma 1, and valve body guiding cone angle gamma 1 is greater than the first selfsealings cone angle 1; Valve body 1 is provided with the second selfsealings conical surface 11 corresponding to the first selfsealings conical surface 31 of seal ring 3, second 11 pairs of the selfsealings conical surfaces should have the second selfsealings cone angle 2, the angle difference that the first selfsealings cone angle 1 is less than the second selfsealings cone angle 2, the second selfsealings cone angle 2 and the first selfsealings cone angle 1 is 0.5 °～1 °;
Be provided with the first back seal conical surface 33 and the stem guiding conical surface 34 on the surface of the endoporus 4 of seal ring 3, first 33 pairs of the back seal conical surfaces should have the first back seal cone angle beta 1,34 pairs of the stem guiding conical surfaces should have stem guiding cone angle gamma 2, and stem guiding cone angle gamma 2 is greater than the first back seal cone angle beta 1; Valve rod 2 is provided with the second back seal conical surface 21 corresponding to the first back seal conical surface 33 of seal ring 3, the second back seal conical surface 21 forms the second back seal cone angle beta 2, the angle difference that the first back seal cone angle beta 1 is less than the second back seal cone angle beta 2, the second back seal cone angle beta 2 and the first back seal cone angle beta 1 is 0.5 °～1 °.
On the valve opening of stop valve during the work of sealing wedge-type self-tightening structure, the first back seal conical surface 33 that the second back seal conical surface 21 on valve rod 2 contacts with the endoporus 4 of seal ring 3 wedging of combining closely under the effect of pressure medium, thereby formation back seal; Now the same wedging of combining closely under the effect of medium of the first selfsealings conical surface 31 of the second selfsealings conical surface 11 on valve body 1 and seal ring 3, form selfsealings, makes valve rod 2 without external leakage.
The differential seat angle of 0.5 °～1 ° existed between the first selfsealings cone angle 1 and the second selfsealings cone angle 2 and the first back seal cone angle beta 1 and the second back seal cone angle beta 2, can form the double wedge type potted line under the effect of medium makes valve body 1 and selfsealings face between seal ring 3 and the inverse sealing face of valve rod 2 between seal ring 3 can be combined more closely wedging, utilize the medium masterpiece to be used in the structural component of wedge-type and form selfsealings power and back seal power, make between valve body 1, valve rod 2 and seal ring 3 to form sealing more reliably.
The utility model has solved the problem that on existing Y-shaped cut-off valve, sealing configuration easily lost efficacy.Design by seal ring 3 and valve rod 2, valve body 1 sealing surface arranges on the 1st road of Y-shaped cut-off valve and seals, and has alleviated the sealing load of valve packing, makes valve have reliable and effective upper sealing, and can be safely among ultrahigh pressure (4500LB) valve.
Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not within breaking away from spirit and scope of the present utility model; can utilize method and the technology contents of above-mentioned announcement to make possible change and modification to technical solutions of the utility model; therefore; every content that does not break away from technical solutions of the utility model; any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all belong to the protection domain of technical solutions of the utility model.
Claims (6)
1. seal the double wedge type self-tightening structure on a Y-shaped cut-off valve, comprise valve body, valve rod and seal ring, described valve rod is arranged on described valve inner, it is characterized in that: described seal ring is the inverted cone structure, described seal ring is provided with obconic endoporus, described seal ring is fixed on described valve body by gland nut, and described valve rod inserts in described endoporus;
The male cone (strobilus masculinus) of described seal ring is provided with the first selfsealings conical surface and the valve body guiding conical surface, the described first selfsealings conical surface is to there being the first selfsealings cone angle, described valve body guide cone is in the face of valve body guiding cone angle should be arranged, and described valve body guiding cone angle is greater than described the first selfsealings cone angle;
Be provided with the first back seal conical surface and the stem guiding conical surface on the surface of the endoporus of described seal ring, the described first back seal conical surface is to there being the first back seal cone angle, the described stem guiding conical surface is to the stem guiding cone angle should be arranged, and described stem guiding cone angle is greater than described the first back seal cone angle.
2. seal the double wedge type self-tightening structure on Y-shaped cut-off valve as claimed in claim 1, it is characterized in that: described valve body is provided with the second selfsealings conical surface corresponding to the first selfsealings conical surface of described seal ring, the described second selfsealings conical surface is to the second selfsealings cone angle should be arranged, and described the first selfsealings cone angle is less than the second selfsealings cone angle.
3. seal the double wedge type self-tightening structure on Y-shaped cut-off valve as claimed in claim 2, it is characterized in that: the angle difference of described the second selfsealings cone angle and described the first selfsealings cone angle is 0.5 °～1 °.
4. seal the double wedge type self-tightening structure on Y-shaped cut-off valve as claimed in claim 1, it is characterized in that: described valve rod is provided with the second back seal conical surface corresponding to the first back seal conical surface of described seal ring, the described second back seal conical surface is to the second back seal cone angle should be arranged, and described the first back seal cone angle is less than the second back seal cone angle.
5. seal the double wedge type self-tightening structure on Y-shaped cut-off valve as claimed in claim 4, it is characterized in that: the angle difference of described the second back seal cone angle and described the first back seal cone angle is 0.5 °～1 °.
6. a Y-shaped cut-off valve, is characterized in that: possess sealing double wedge type self-tightening structure on the arbitrary described Y-shaped cut-off valve of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320431562.2U CN203374832U (en) | 2013-07-19 | 2013-07-19 | Double-wedge type self-tensioning structure of Y-type stop valve upper seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320431562.2U CN203374832U (en) | 2013-07-19 | 2013-07-19 | Double-wedge type self-tensioning structure of Y-type stop valve upper seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374832U true CN203374832U (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320431562.2U Expired - Lifetime CN203374832U (en) | 2013-07-19 | 2013-07-19 | Double-wedge type self-tensioning structure of Y-type stop valve upper seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374832U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084078A (en) * | 2018-10-26 | 2018-12-25 | 吴忠中创自控阀有限公司 | A kind of Y-shaped cut-off valve |
| CN112413123A (en) * | 2019-08-22 | 2021-02-26 | 西克股份公司 | Process connection with annularly shaped seal |
-
2013
- 2013-07-19 CN CN201320431562.2U patent/CN203374832U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084078A (en) * | 2018-10-26 | 2018-12-25 | 吴忠中创自控阀有限公司 | A kind of Y-shaped cut-off valve |
| CN109084078B (en) * | 2018-10-26 | 2020-02-07 | 吴忠中创自控阀有限公司 | Y-shaped stop valve |
| CN112413123A (en) * | 2019-08-22 | 2021-02-26 | 西克股份公司 | Process connection with annularly shaped seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201703 Shanghai song Xiu Lu Industrial Park Qingpu District No. 399 Patentee after: NAFUXI (SHANGHAI) VALVE TECHNOLOGY CO.,LTD. Address before: 201703 Shanghai song Xiu Lu Industrial Park Qingpu District No. 399 Patentee before: SHANGHAI NORTH AMERICAN VALVE Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |
|
| CX01 | Expiry of patent term |