CN210153239U - Butterfly valve rod seal structure - Google Patents
Butterfly valve rod seal structure Download PDFInfo
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- CN210153239U CN210153239U CN201921000285.3U CN201921000285U CN210153239U CN 210153239 U CN210153239 U CN 210153239U CN 201921000285 U CN201921000285 U CN 201921000285U CN 210153239 U CN210153239 U CN 210153239U
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- butterfly valve
- sealing
- sealing sleeve
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- valve rod
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Abstract
The utility model discloses a butterfly valve rod seal structure. A butterfly valve rod sealing structure is an integrated sealing pair, the integrated sealing pair is a hollow sealing sleeve, 2 sets of sealing devices are sequentially arranged at the position between the hollow sealing sleeve and a butterfly valve body in contact, and 2 sets of sealing devices are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve rod in contact; the self-sealing device of the hollow sealing sleeve is an annular V-shaped groove which is arranged on the end face of the lower bottom surface of the hollow sealing sleeve and is concave inwards, and the part of the hollow sealing sleeve, which is provided with the annular V-shaped groove, is 1/5-1/6 of the height of the hollow sealing sleeve. The sealing performance of the valve rod of the butterfly valve is improved, the resistance of the butterfly valve for opening and closing the butterfly valve by the valve rod of the butterfly valve is reduced, the abrasion of the O-shaped sealing ring is reduced, and the service life of the butterfly valve is prolonged.
Description
Technical Field
The utility model belongs to an accessory articles for use of valve especially belong to a butterfly valve rod seal structure.
Background
The valve rod is an important part of the valve and is used for transmission, an actuating mechanism or a handle is connected to the valve rod, and the valve rod directly drives the valve core to move or rotate below the actuating mechanism or the handle so as to realize the opening and closing or adjusting function of the valve. The valve rod is not only a moving part and a stressed part but also a sealing part in the opening and closing process of the valve. Meanwhile, the valve rod is impacted and corroded by media, and also generates friction with a packing or an O-shaped sealing ring, so that the sealing performance of the valve rod is generally required to be higher. At present, shaft sleeves and O-shaped sealing rings are added at valve rods of butterfly valves with center line sealing in the market for sealing or packing; the packing seal has low cost, easy replacement, easy abrasion and short service life; the O-shaped sealing ring has good sealing performance, but if the compression deformation of the O-shaped sealing ring is large, the resistance of the switch valve is increased, the abrasion of the O-shaped sealing ring is aggravated, and the service life is reduced. How to improve the sealing performance of butterfly valve rod, how to reduce the resistance of butterfly valve rod switch butterfly valve, reduce "O" type sealing washer wearing and tearing, it is the problem that needs to solve to improve butterfly valve life.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a sealing structure of a valve rod of a butterfly valve is provided. The sealing structure for the valve rod of the butterfly valve can improve the sealing performance of the valve rod of the butterfly valve, reduce the resistance of the butterfly valve for opening and closing the butterfly valve by the valve rod of the butterfly valve, reduce the abrasion of the O-shaped sealing ring and prolong the service life of the butterfly valve.
The utility model provides a technical scheme of above-mentioned technical problem is: the utility model provides a butterfly valve rod seal structure, includes butterfly valve body, butterfly valve rod, characterized by: the butterfly valve rod sealing structure is an integrated sealing pair, the integrated sealing pair is a hollow sealing sleeve, 2 sets of sealing devices are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve body in contact, and 2 sets of sealing devices are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve rod in contact; 2 sets of sealing devices which are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve body are 2O-shaped sealing rings, 2 annular grooves with 2/3 circular cross sections are sequentially arranged on the outer surface between the hollow sealing sleeve and the butterfly valve body, and the 2O-shaped sealing rings are sequentially arranged in 2 annular grooves with 2/3 circular cross sections on the outer surface of the hollow sealing sleeve; 2 sets of sealing devices which are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve rod are 2O-shaped sealing rings, 2 annular grooves with 2/3 circular cross sections are sequentially arranged on the inner surface between the hollow sealing sleeve and the butterfly valve rod, and 2O-shaped sealing rings are sequentially arranged in 2 annular grooves with 2/3 circular cross sections on the inner surface of the hollow sealing sleeve; the self-sealing device of the hollow sealing sleeve is an annular V-shaped groove which is arranged on the end face of the lower bottom surface of the hollow sealing sleeve and is concave inwards, and the part of the annular V-shaped groove arranged on the hollow sealing sleeve is 1/5-1/6 of the height of the hollow sealing sleeve.
When the butterfly valve is in a bearing range and is in a pressure-bearing state, the inner concave annular V-shaped groove self-sealing structure arranged on the end face of the lower bottom surface of the hollow sealing sleeve is used, and along with the increase of the working pressure borne by the butterfly valve, the inner concave annular V-shaped groove arranged on the end face of the lower bottom surface of the hollow sealing sleeve is more and more tight in self-sealing, and the sealing performance is better and better; meanwhile, 2 sets of sealing devices of O-shaped sealing rings are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve body, and the sealing devices of the 2 sets of O-shaped sealing rings are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve rod and are used together, so that the sealing performance of the butterfly valve rod is improved.
The utility model has the advantages that: because the butterfly valve rod sealing structure of the utility model is an integrated sealing pair, the integrated sealing pair is a hollow sealing sleeve, 2 sets of sealing devices which are O-shaped sealing rings are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve body, and 2 sets of sealing devices which are O-shaped sealing rings are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve rod; the self-sealing device of the hollow sealing sleeve is also arranged, the self-sealing device of the hollow sealing sleeve is an annular V-shaped groove which is arranged on the end surface of the lower bottom surface of the hollow sealing sleeve and is concave inwards, and the part of the hollow sealing sleeve, which is provided with the annular V-shaped groove, is 1/5-1/6 of the height of the hollow sealing sleeve. The sealing performance of the valve rod of the butterfly valve is improved, the resistance of the butterfly valve for opening and closing the butterfly valve by the valve rod of the butterfly valve is reduced, the abrasion of the O-shaped sealing ring is reduced, and the service life of the butterfly valve is prolonged.
Drawings
The present invention will be further explained with reference to the drawings and examples;
fig. 1 is a schematic structural view of the hollow sealing sleeve in the use state of the utility model;
fig. 2 is an enlarged sectional view of the hollow sealing sleeve of the present invention;
in the drawings: 1. the butterfly valve comprises a butterfly valve body, 2 butterfly valve rods, 3 hollow sealing sleeves, 4O-shaped sealing rings and 31 annular V-shaped grooves.
Detailed Description
The present invention will be described in further detail with reference to the following examples.
Example 1
As shown in fig. 1 and 2, the butterfly valve rod sealing structure comprises a butterfly valve body 1 and a butterfly valve rod 2, and is characterized in that: the butterfly valve rod sealing structure is an integrated sealing pair, the integrated sealing pair is a hollow sealing sleeve 3, 2 sets of sealing devices are sequentially arranged at the position between the hollow sealing sleeve 3 and the butterfly valve body 1 in contact, and 2 sets of sealing devices are sequentially arranged at the position between the hollow sealing sleeve 3 and the butterfly valve rod 2 in contact; 2 sealing devices which are sequentially arranged at the position between the hollow sealing sleeve 3 and the butterfly valve body 1 are 2O-shaped sealing rings 4, 2 annular grooves with 2/3 circular cross sections are sequentially arranged on the outer surface between the hollow sealing sleeve 3 and the butterfly valve body 1, and the 2O-shaped sealing rings 4 are sequentially arranged in 2 annular grooves with 2/3 circular cross sections on the outer surface of the hollow sealing sleeve 3; 2 sets of sealing devices which are sequentially arranged at the position between the hollow sealing sleeve 3 and the butterfly valve rod 2 are 2O-shaped sealing rings 4, 2 annular grooves with 2/3 circular cross sections are sequentially arranged on the inner surface between the hollow sealing sleeve 3 and the butterfly valve rod 2, and the 2O-shaped sealing rings 4 are sequentially arranged in 2 annular grooves with 2/3 circular cross sections on the inner surface of the hollow sealing sleeve; the self-sealing device of the hollow sealing sleeve is characterized by further comprising a self-sealing device of the hollow sealing sleeve, the self-sealing device of the hollow sealing sleeve is an annular V-shaped groove 31 which is arranged on the end face of the lower bottom face of the hollow sealing sleeve and is concave inwards, and the part of the hollow sealing sleeve, which is provided with the annular V-shaped groove 31, is 1/5 with the height of the hollow sealing sleeve 3.
Example 2
As shown in fig. 1 and 2, the butterfly valve rod sealing structure comprises a butterfly valve body 1 and a butterfly valve rod 2, and is characterized in that: the butterfly valve rod sealing structure is an integrated sealing pair, the integrated sealing pair is a hollow sealing sleeve 3, 2 sets of sealing devices are sequentially arranged at the position between the hollow sealing sleeve 3 and the butterfly valve body 1 in contact, and 2 sets of sealing devices are sequentially arranged at the position between the hollow sealing sleeve 3 and the butterfly valve rod 2 in contact; 2 sealing devices which are sequentially arranged at the position between the hollow sealing sleeve 3 and the butterfly valve body 1 are 2O-shaped sealing rings 4, 2 annular grooves with 2/3 circular cross sections are sequentially arranged on the outer surface between the hollow sealing sleeve 3 and the butterfly valve body 1, and the 2O-shaped sealing rings 4 are sequentially arranged in 2 annular grooves with 2/3 circular cross sections on the outer surface of the hollow sealing sleeve 3; 2 sets of sealing devices which are sequentially arranged at the position between the hollow sealing sleeve 3 and the butterfly valve rod 2 are 2O-shaped sealing rings 4, 2 annular grooves with 2/3 circular cross sections are sequentially arranged on the inner surface between the hollow sealing sleeve 3 and the butterfly valve rod 2, and the 2O-shaped sealing rings 4 are sequentially arranged in 2 annular grooves with 2/3 circular cross sections on the inner surface of the hollow sealing sleeve; the self-sealing device of the hollow sealing sleeve is characterized by further comprising a self-sealing device of the hollow sealing sleeve, the self-sealing device of the hollow sealing sleeve is an annular V-shaped groove 31 which is arranged on the end face of the lower bottom face of the hollow sealing sleeve and is concave inwards, and the part of the hollow sealing sleeve, which is provided with the annular V-shaped groove 31, is 1/6 with the height of the hollow sealing sleeve 3.
From the above description, those skilled in the art can make various changes and modifications without departing from the technical spirit of the present invention, and the present invention is within the protection scope of the present invention. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.
Claims (1)
1. The utility model provides a butterfly valve rod seal structure, includes butterfly valve body, butterfly valve rod, characterized by: the butterfly valve rod sealing structure is an integrated sealing pair, the integrated sealing pair is a hollow sealing sleeve, 2 sets of sealing devices are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve body in contact, and 2 sets of sealing devices are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve rod in contact; 2 sets of sealing devices which are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve body are 2O-shaped sealing rings, 2 annular grooves with 2/3 circular cross sections are sequentially arranged on the outer surface between the hollow sealing sleeve and the butterfly valve body, and the 2O-shaped sealing rings are sequentially arranged in 2 annular grooves with 2/3 circular cross sections on the outer surface of the hollow sealing sleeve; 2 sets of sealing devices which are sequentially arranged at the position between the hollow sealing sleeve and the butterfly valve rod are 2O-shaped sealing rings, 2 annular grooves with 2/3 circular cross sections are sequentially arranged on the inner surface between the hollow sealing sleeve and the butterfly valve rod, and 2O-shaped sealing rings are sequentially arranged in 2 annular grooves with 2/3 circular cross sections on the inner surface of the hollow sealing sleeve; the self-sealing device of the hollow sealing sleeve is an annular V-shaped groove which is arranged on the end face of the lower bottom surface of the hollow sealing sleeve and is concave inwards, and the part of the annular V-shaped groove arranged on the hollow sealing sleeve is 1/5-1/6 of the height of the hollow sealing sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921000285.3U CN210153239U (en) | 2019-06-28 | 2019-06-28 | Butterfly valve rod seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921000285.3U CN210153239U (en) | 2019-06-28 | 2019-06-28 | Butterfly valve rod seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210153239U true CN210153239U (en) | 2020-03-17 |
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ID=69764742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921000285.3U Active CN210153239U (en) | 2019-06-28 | 2019-06-28 | Butterfly valve rod seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210153239U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159769A (en) * | 2019-06-28 | 2019-08-23 | 济南迈克阀门科技有限公司 | A kind of butterfly valve valve rod leak-proof structure |
-
2019
- 2019-06-28 CN CN201921000285.3U patent/CN210153239U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159769A (en) * | 2019-06-28 | 2019-08-23 | 济南迈克阀门科技有限公司 | A kind of butterfly valve valve rod leak-proof structure |
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