CN216768385U - Butterfly valve with bidirectional sealing double-disc plate - Google Patents
Butterfly valve with bidirectional sealing double-disc plate Download PDFInfo
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- CN216768385U CN216768385U CN202220090510.2U CN202220090510U CN216768385U CN 216768385 U CN216768385 U CN 216768385U CN 202220090510 U CN202220090510 U CN 202220090510U CN 216768385 U CN216768385 U CN 216768385U
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Abstract
The utility model discloses a butterfly valve with a bidirectional seal double-disc version, relates to the field of butterfly valves, and solves the problems that the existing butterfly valve is not suitable for working conditions with large working pressure difference and cannot be used for pipeline sampling. The butterfly valve comprises a valve body, two butterfly plates, two valve rods and two actuators connected with the corresponding valve rods, wherein the two butterfly plates are installed on the corresponding valve rods, the two butterfly plates are arranged right opposite to each other in parallel when being opened and closed, a sampling cavity is formed in the valve body between the two butterfly plates, and a sampling valve capable of being communicated with the sampling cavity is arranged on the valve body. The two actuators operate in sequence to close the corresponding butterfly plates, one butterfly plate firstly adjusts the pressure difference on the corresponding side and then opens or closes with full pressure difference, the maximum allowable working pressure difference of the valve is increased, and the two butterfly plates can be used alternately to bear the medium pressure, so that the valve is effectively prevented from leaking, and the service life is prolonged; when two butterfly plates are closed completely, the sampling cavity forms a closed space, sampling can be carried out through the sampling valve, sampling is convenient, and the butterfly valve is applicable to high-pressure working conditions.
Description
Technical Field
The utility model relates to the field of butterfly valves, in particular to a butterfly valve with a bidirectional seal double disc plate.
Background
Compared with other types of valves, the butterfly valve has the characteristic of quick opening and closing, mainly plays a role in cutting off and throttling on a pipeline, and can be used for controlling the flow of various types of fluid such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. In the prior art, the butterfly valve is only provided with one butterfly plate, when the working pressure difference in a pipeline is large, the tightness is greatly tested, and a sealing surface can generate certain leakage. In addition, some sampling valves are not suitable for use because it is troublesome to sample in a high-pressure pipeline.
Disclosure of Invention
The purpose of the utility model is as follows: in order to overcome the defects of the prior art, the utility model provides a butterfly valve with a bidirectional seal double-disc plate, which solves the problems that the existing butterfly valve is not suitable for working conditions with large working pressure difference and cannot be used for pipeline sampling.
The technical scheme of the utility model is as follows: including valve body, two butterfly plates, two valve rods and two with correspond the executor that the valve rod is connected, two butterfly plates are installed on the valve rod that corresponds to two butterfly plates are just to parallel arrangement when closing, are provided with the sample chamber in the valve body between two butterfly plates, are provided with the sample valve that can communicate the sample chamber on the valve body.
By adopting the technical scheme, the two actuators operate to open and close the corresponding butterfly plates in sequence, one butterfly plate firstly adjusts the pressure difference of the corresponding side and then opens or closes with full pressure difference, the maximum allowable working pressure difference of the valve is increased, and the two butterfly plates can be used alternately to bear the medium pressure, so that the abrasion is reduced, the leakage of the valve is effectively prevented, and the service life is prolonged; the two butterfly plates are arranged in parallel in a facing manner, so that the valve can deal with medium pressure in both forward direction and reverse direction when being closed, and the valve does not need to be installed on a pipeline in the forward direction and the reverse direction; in addition, when two butterfly plates were closed entirely, the sample chamber formed confined space, can take a sample through the sample valve, and it is convenient to take a sample, applicable in the high pressure operating mode.
The utility model further comprises the following steps: the butterfly plate is fixedly provided with a sealing element, the inner wall of the valve body is convexly provided with a sealing platform, the sealing element is in sealing fit with the sealing platform to form a sealing conical surface, and the sealing conical surface is inclined inwards towards the center of the valve body from two sides of the valve body.
By adopting the further arrangement, when medium pressure in the pipeline is applied to the butterfly plate on one side, the sealing element and the sealing platform are pressed and sealed more tightly, and the sealing performance is enhanced.
The utility model further provides that: the two actuators are arranged in diagonal directions of the valve body.
By adopting the above further arrangement, the installation space of the actuator is enlarged, and the layout is more reasonable.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the utility model at A in FIG. 1;
wherein, 1, a valve body; 2. a butterfly plate; 3. a valve stem; 4. an actuator; 11. a sampling cavity; 5. a sampling valve; 21. a seal member; 12. a sealing table; 22. and sealing the conical surface.
Detailed Description
As shown in fig. 1, the butterfly valve with the bidirectional sealing double-disc plate comprises an integrated valve body 1, two butterfly plates 2, two valve rods 3 and two actuators 4, wherein the actuators 4 are connected with the corresponding valve rods 3, the two butterfly plates 2 are respectively and fixedly arranged on the corresponding valve rods 3, and the two butterfly plates 2 are arranged in parallel in a facing manner when being closed, that is, the front faces of the two butterfly plates 2 face to face; a sampling cavity 11 is arranged in the valve body 1 between the two butterfly plates 2, and a sampling valve 5 which can be communicated with the sampling cavity 11 is arranged on the valve body 1. When the valve needs to be opened or closed, the two actuators 4 operate sequentially to open or close the two butterfly plates 2 sequentially, so that the valve obtains a larger working pressure difference range. When the two butterfly plates 2 are completely closed, the sampling cavity 11 forms a closed space, and the sampling valve 5 can be opened for sampling operation.
As shown in fig. 2, a sealing member 21 is fixedly mounted on the butterfly plate 2, an annular sealing table 12 is convexly arranged on the inner wall of the valve body 1, the sealing member 21 is in sealing fit with the sealing table 12 and forms a sealing conical surface 22, the sealing conical surface 22 is inclined from two sides of the valve body 1 to the center direction of the valve body 1, when medium pressure in a pipeline is applied to the butterfly plate 2 entering one side, the sealing member 21 has a tendency of moving towards the medium pressure applying direction, so that the sealing member 21 can be in closer contact with the sealing table 12, and the sealing performance at the position is improved.
Two executor 4 arrange in the diagonal direction of valve body 1, and one of them executor 4 is installed towards the top, and another executor 4 is then installed towards the end, avoids two executor 4 to contact each other or collide with and lead to executor 4 to open and close obstructed.
Claims (3)
1. The utility model provides a take two dish version butterfly valves of two way seal, including the valve body, its characterized in that: still including two butterfly plates, two valve rods and two with correspond the executor that the valve rod is connected, two the butterfly plate is installed on the valve rod that corresponds to two butterfly plates are just to parallel arrangement, two when closing be provided with the sample chamber in the valve body between the butterfly plate, be provided with the sample valve that can communicate the sample chamber on the valve body.
2. The butterfly valve with a double disc seal according to claim 1, wherein: the butterfly plate is fixedly provided with a sealing element, a sealing table is convexly arranged on the inner wall of the valve body, the sealing element is in sealing fit with the sealing table to form a sealing conical surface, and the sealing conical surface is inclined inwards towards the center of the valve body from two sides of the valve body.
3. The butterfly valve with a double disc seal according to claim 1 or 2, characterized in that: the two actuators are arranged in a diagonal direction of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220090510.2U CN216768385U (en) | 2022-01-14 | 2022-01-14 | Butterfly valve with bidirectional sealing double-disc plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220090510.2U CN216768385U (en) | 2022-01-14 | 2022-01-14 | Butterfly valve with bidirectional sealing double-disc plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216768385U true CN216768385U (en) | 2022-06-17 |
Family
ID=81976566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220090510.2U Active CN216768385U (en) | 2022-01-14 | 2022-01-14 | Butterfly valve with bidirectional sealing double-disc plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216768385U (en) |
-
2022
- 2022-01-14 CN CN202220090510.2U patent/CN216768385U/en active Active
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