CN210423750U - Butterfly valve that leakproofness is strong - Google Patents
Butterfly valve that leakproofness is strong Download PDFInfo
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- CN210423750U CN210423750U CN201921351925.5U CN201921351925U CN210423750U CN 210423750 U CN210423750 U CN 210423750U CN 201921351925 U CN201921351925 U CN 201921351925U CN 210423750 U CN210423750 U CN 210423750U
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Abstract
The utility model provides a butterfly valve that leakproofness is strong, which comprises a valve body, the valve rod is radially installed to the valve body, the inside valve plate that is provided with of valve body, the valve plate is installed on the valve rod, be provided with the packing between the upper end of valve rod and the valve body, the upper end cover of valve rod is equipped with gland, gland passes through set screw and fixes on the valve body, gland's lower tip contacts with packing, be provided with the sealing washer on the valve plate, be provided with the compensation sealing washer in the valve body, sealing washer and compensation sealing washer contact each other, O type circle has been put in the outer circumference embedding of compensation sealing washer, be provided with flexible pad between compensation sealing. One side of the valve body is sequentially provided with a sealing flange and a connecting flange, the end face of the sealing flange is contacted with the compensation sealing ring, and the connecting flange, the sealing flange and the valve body are connected through a limiting screw rod. In the embodiment of the application, the sealing performance and the reliability of the valve are improved, the leakage phenomenon is prevented, and the service life is prolonged.
Description
Technical Field
The application relates to the technical field of butterfly valves, especially relates to a butterfly valve that leakproofness is strong.
Background
A butterfly valve, also called a flap valve, is a regulating valve with a simple structure, and can be used for on-off control of low-pressure pipeline media, namely a valve with a closing part (a valve clack or a butterfly plate) which is a disc and rotates around a valve shaft to open and close, and the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.
The existing butterfly valve is generally only provided with one sealing ring, most butterfly valves are of fixed structures, after the butterfly valve is used for a long time, the sealing ring is seriously abraded, gaps are easily generated after the butterfly valve is closed, the sealing performance is poor, and the leakage phenomenon occurs in the use process; and the fixed structure makes can't change the sealing washer to will change whole butterfly valve, increased the cost of maintenance.
Disclosure of Invention
The application provides a butterfly valve that leakproofness is strong to after using for a long time among the solution prior art, the sealing washer wearing and tearing are serious, and the leakproofness is poor, and can't carry out the problem of changing to the sealing washer.
The application provides a butterfly valve that leakproofness is strong, including the valve body, the valve rod is radially installed to the valve body, the inside valve plate that is provided with of valve body, the valve plate is installed on the valve rod, the upper end of valve rod with be provided with the packing between the valve body, the upper end cover of valve rod is equipped with the gland, the gland passes through set screw and fixes on the valve body, the lower tip of gland with the packing contacts, be provided with the sealing washer on the valve plate, be provided with the compensation sealing washer in the valve body, the sealing washer with compensation sealing washer contacts each other, the outer circumference embedding of compensation sealing washer has put O type circle, the compensation sealing washer inside wall with be provided with flexible pad between the valve body.
Further, valve body one side has set gradually sealing flange and flange, sealing flange's terminal surface with the compensation sealing washer contacts, flange sealing flange with be connected through limit screw between the valve body, the cover is equipped with compression spring on the limit screw, compression spring sets up sealing flange with between the flange, sealing flange with be provided with adjusting shim between the valve body.
Furthermore, the limiting screw is provided with an adjusting nut, the sealing flange is provided with an adjusting groove, the adjusting nut is arranged in the adjusting groove, one end of the limiting screw is further provided with a fixing nut, and the fixing nut is used for being connected with a pipeline.
Furthermore, the contact surface of the sealing ring and the compensation sealing ring is a conical end surface.
Further, a bearing is arranged between the upper end of the valve rod and the valve body, and two bearings are arranged.
In the embodiment of the application, the sealing performance between the valves is improved and the leakage phenomenon in the use process is prevented by the sealing ring, the compensation sealing ring, the O-shaped ring, the flexible gasket and the adjusting gasket; the sealing ring and the compensation sealing ring are arranged, when the sealing ring is worn after being used for a long time, the compensation sealing ring can compensate a gap caused by the wear of the sealing ring, so that the sealing performance of the valve is ensured, the working reliability is improved, the wear resistance is improved, the service life is prolonged, and the requirement on the machining precision of the sealing surface is reduced; the flexible gasket and the adjusting gasket are arranged, and the adjusting nut is screwed to enable the end face of the sealing flange to push the compensating sealing ring to move towards the valve rod direction, so that the flexible gasket and the adjusting gasket are compressed under the pressure of the sealing flange, the sealing flange is tightly contacted with the valve body, the sealing performance is improved, leakage cannot occur, and the gap adjusting function is achieved; the O-shaped ring and the flexible gasket are arranged to ensure the sealing effect between the compensation sealing ring and the valve body;
through the arranged sealing flange and the connecting flange, when the sealing ring and the compensating sealing ring are seriously abraded, the sealing flange and the connecting flange can be disassembled, the sealing ring and the compensating sealing ring are replaced, the disassembly and the assembly are convenient, the replacement and the maintenance are convenient, and the maintenance cost is reduced; when the limit screw and the compression spring are arranged, the compression spring can buffer part of impact force, so that the amplitude is reduced, the deformation of the sealing ring and the compensation sealing ring is prevented, and the sealing performance is improved;
through the two bearings, the torsion can be increased, and the valve can be conveniently opened; through the arranged sealing packing and the sealing packing gland, the sealing performance and the installation reliability can be improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic overall structure of the present application;
fig. 2 is a partially enlarged view of the present application at a.
In the figure: 1-a valve body; 2-a valve stem; 3-a valve plate; 4-a bearing; 5-sealing packing; 6-sealing packing gland; 7-fixing the screw rod; 8-sealing the flange; 9-adjusting the nut; 10-a connecting flange; 11-a limit screw; 12-a pipeline; 13-a fixing nut; 14-a hold-down spring; 15-an adjustment tank; 16-adjusting the shim; 17-a sealing ring; 18-a flexible mat; 19-compensating sealing ring; 20-O-shaped ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, this embodiment provides a butterfly valve with strong sealing performance, including a valve body 1, a valve rod 2 is radially installed on the valve body 1, a valve plate 3 is disposed inside the valve body 1, the valve plate 3 is installed on the valve rod 2, a sealing filler 5 is disposed between an upper end portion of the valve rod 2 and the valve body 1, a sealing filler gland 6 is sleeved on an upper end portion of the valve rod 2, the sealing filler gland 6 is fixed on the valve body 1 through a fixing screw 7, a lower end portion of the sealing filler gland 6 contacts with the sealing filler 5, a sealing ring 17 is disposed on the valve plate 3, a compensating sealing ring 19 is disposed in the valve body 1, the sealing ring 17 contacts with the compensating sealing ring 19, an O-ring 20 is embedded in an outer circumference of the compensating sealing ring 19, a flexible gasket 18. The contact surfaces of the sealing ring 17 and the compensating sealing ring 19 are conical end surfaces. A bearing 4 is arranged between the upper end part of the valve rod 2 and the valve body 1, and two bearings 4 are arranged.
A sealing flange 8 and a connecting flange 10 are sequentially arranged on one side of a valve body 1, the end face of the sealing flange 8 is in contact with a compensation sealing ring 19, the connecting flange 10, the sealing flange 8 and the valve body 1 are connected through a limiting screw rod 11, a compression spring 14 is sleeved on the limiting screw rod 11, and the compression spring 14 is arranged between the sealing flange 8 and the connecting flange 10. The limiting screw 11 is provided with an adjusting nut 9, the sealing flange 8 is provided with an adjusting groove 15, the adjusting nut 9 is arranged in the adjusting groove 15, one end of the limiting screw 11 is further provided with a fixing nut 13, and the fixing nut 13 is used for being connected with the pipeline 12. A spacer shim 16 is arranged between the sealing flange 8 and the valve body 1.
During assembly, install sealing flange 8 in one side of valve body 1 earlier, and contact sealing flange 8's terminal surface with compensation sealing ring 19, install flange 10 in one side of sealing flange 8 again, place adjusting nut 9 in adjustment tank 15, set up pressure spring 14 between sealing flange 8 and flange 10, and run through flange 10 with stop screw 11 in proper order, pressure spring 14, and sealing flange 8 adjusting nut 9, with flange 10, sealing flange 8 and valve body 1 are connected through stop screw 11, during the installation, flange 10 and pipeline 12 flange joint, and it is fixed mutually with flange 10 with pipeline 12 through fixation nut 13.
During the use, make valve plate 3 internal rotation in valve body 1 through rotatory valve rod 2, come the control flow through adjusting the angle that opens and shuts. Valve plate 3 rotates the in-process, sealing washer 17 and compensation sealing washer 19 mutual contact friction can produce wearing and tearing, produce the gap easily after the closure, lead to the leakproofness poor, through adjusting nut 9 of screwing this moment for the terminal surface of sealing flange 8 promotes compensation sealing washer 19 and removes to valve rod 2 direction, adjusting shim 16 and flexible pad 18 are all compressed, and at this moment, the conical end face of compensation sealing washer 19 is laminated with the conical end face of sealing washer 17 mutually, the gap that sealing washer 17 wearing and tearing caused before having compensated.
In the embodiment of the application, the sealing performance between the valves is improved and the leakage phenomenon in the use process is prevented by the sealing ring 17, the compensation sealing ring 19, the O-shaped ring 20, the flexible gasket 18 and the adjusting gasket 16; by the aid of the sealing ring 17 and the compensating sealing ring 19, when the sealing ring 17 is worn after being used for a long time, the compensating sealing ring 19 can compensate gaps caused by the wear of the sealing ring 17, so that the sealing performance of the valve is guaranteed, the working reliability is improved, the wear resistance is improved, the service life is prolonged, and the requirement on the machining precision of a sealing surface is lowered; the flexible gasket 18 and the adjusting gasket 16 are arranged, and the adjusting nut 9 is screwed to enable the end face of the sealing flange 8 to push the compensating seal ring 19 to move towards the valve rod 2, so that the flexible gasket 18 and the adjusting gasket 16 are compressed under the pressure of the sealing flange 8, the sealing flange 8 is tightly contacted with the valve body 1, the sealing performance is improved, leakage cannot occur, and the gap adjusting function is achieved; the O-shaped ring 20 and the flexible gasket 18 are arranged to ensure the sealing effect between the compensation sealing ring 19 and the valve body 1;
through the arrangement of the sealing flange 8 and the connecting flange 10, when the sealing ring 17 and the compensating sealing ring 19 are seriously abraded, the sealing flange 8 and the connecting flange 10 can be disassembled, the sealing ring and the compensating sealing ring 19 are replaced, the disassembly and the assembly are convenient, the replacement and the maintenance are convenient, and the maintenance cost is reduced; when the limit screw 11 and the compression spring 14 are arranged, the compression spring 14 can buffer part of impact force when the impact force is received, so that the amplitude is reduced, the deformation of the sealing ring 17 and the compensation sealing ring 19 is prevented, and the sealing property is improved;
through the two bearings 4, the torsion can be increased, and the valve can be conveniently opened; by the sealing packing 5 and the sealing packing gland 6, the sealing performance and the installation reliability can be improved.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (5)
1. The utility model provides a butterfly valve that leakproofness is strong, a serial communication port, includes the valve body, the valve rod is radially installed to the valve body, the inside valve plate that is provided with of valve body, the valve plate is installed on the valve rod, the upper end of valve rod with be provided with the packing between the valve body, the upper end cover of valve rod is equipped with the gland, the gland passes through set screw and fixes on the valve body, the lower tip of gland with the packing contacts, be provided with the sealing washer on the valve plate, be provided with the compensation sealing washer in the valve body, the sealing washer with compensation sealing washer contacts each other, the outer circumference embedding of compensation sealing washer has put O type circle, the compensation sealing washer inside wall with be provided with flexible pad between the valve body.
2. The butterfly valve with high sealing performance according to claim 1, wherein a sealing flange and a connecting flange are sequentially arranged on one side of the valve body, the end face of the sealing flange is in contact with the compensation sealing ring, the connecting flange, the sealing flange and the valve body are connected through a limiting screw, a compression spring is sleeved on the limiting screw, the compression spring is arranged between the sealing flange and the connecting flange, and an adjusting gasket is arranged between the sealing flange and the valve body.
3. The butterfly valve with high sealing performance as claimed in claim 2, wherein the limit screw is provided with an adjusting nut, the sealing flange is provided with an adjusting groove, the adjusting nut is arranged in the adjusting groove, and one end of the limit screw is further provided with a fixing nut for connecting with a pipeline.
4. The butterfly valve of claim 1 wherein said seal and said compensator seal contact surfaces are tapered end surfaces.
5. The butterfly valve of claim 1, wherein two bearings are provided between the upper end of the valve stem and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921351925.5U CN210423750U (en) | 2019-08-20 | 2019-08-20 | Butterfly valve that leakproofness is strong |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921351925.5U CN210423750U (en) | 2019-08-20 | 2019-08-20 | Butterfly valve that leakproofness is strong |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210423750U true CN210423750U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921351925.5U Active CN210423750U (en) | 2019-08-20 | 2019-08-20 | Butterfly valve that leakproofness is strong |
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| Country | Link |
|---|---|
| CN (1) | CN210423750U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396480A (en) * | 2022-02-08 | 2022-04-26 | 国工控股集团有限公司 | Ultra-low torque butterfly valve |
-
2019
- 2019-08-20 CN CN201921351925.5U patent/CN210423750U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396480A (en) * | 2022-02-08 | 2022-04-26 | 国工控股集团有限公司 | Ultra-low torque butterfly valve |
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