CN220706464U - Valve seat structure of floating ball valve - Google Patents
Valve seat structure of floating ball valve Download PDFInfo
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- CN220706464U CN220706464U CN202322308420.3U CN202322308420U CN220706464U CN 220706464 U CN220706464 U CN 220706464U CN 202322308420 U CN202322308420 U CN 202322308420U CN 220706464 U CN220706464 U CN 220706464U
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- valve
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- valve seat
- floating ball
- seat structure
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- 238000007789 sealing Methods 0.000 claims abstract description 34
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model relates to a valve seat structure of a floating ball valve, which comprises a connecting body, a ball body and a valve body, wherein a valve seat sealing ring is in pressure equalizing connection between the connecting body, the valve body and the ball body, a butterfly spring is in pressure equalizing connection between the valve seat sealing ring and the connecting body and between the valve seat sealing ring and the valve body respectively, the top end of the ball body is elastically abutted against a valve rod, the connecting body is fixedly connected with the valve body through a bolt, the connecting body is provided with a first U-shaped annular groove, the valve body is provided with a second U-shaped annular groove, the valve seat sealing ring is in pressure equalizing connection between the first U-shaped annular groove and the ball body, the second U-shaped annular groove is in sealing connection with the ball body through the valve seat sealing ring, and an arc surface is arranged at a corner of the valve seat sealing ring far from the annular groove and is abutted against the ball body under the action of the butterfly spring. The valve seat structure of the floating ball valve has the advantages of improving the tightness, reducing the torque, providing pressure compensation, prolonging the service life and the like.
Description
Technical Field
The utility model relates to the technical field of floating ball valves, in particular to a valve seat structure of a floating ball valve.
Background
The ball body of the floating ball valve is floating, and can generate certain displacement and be tightly pressed on the sealing surface of the outlet end under the action of medium pressure, so that the sealing of the outlet end is ensured. At present, after the assembly of the floating ball valve is completed, the sealing is realized through the interference fit between the valve seat and the ball body. Thus floating ball valves either result in excessive valve torque or excessive torque and result in seal leakage if the amount of engagement between the ball and the valve seat is poorly controlled. In addition, as the number of valve openings and closings increases, the soft seal valve seat also wears, causing valve leakage.
For this reason we have developed a valve seat structure for a floating ball valve to solve the above problems.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a valve seat structure of a floating ball valve, which has the advantages of improving the tightness, reducing the torque, providing pressure compensation, prolonging the service life and the like.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a valve seat structure of ball valve floats, includes a connector, a spheroid and a valve body, the connector the valve body with all press-joint a disk seat sealing washer between the spheroid, the disk seat sealing washer respectively with the connector the crimping belleville spring between the valve body, a spheroidal top elasticity butt valve rod, the connector with the valve body passes through bolt fixed connection.
Preferably, an annular groove with an L-shaped structure is arranged at one end of the valve seat sealing ring, the annular groove is sequentially pressed and connected with a supporting frame and a belleville spring, and the bottom end of the belleville spring is abutted with the connecting body.
Preferably, the connecting body is provided with a first U-shaped annular groove, and the valve seat sealing ring is in compression joint between the first U-shaped annular groove and the ball body.
Preferably, an arc-shaped surface is arranged at a corner of the valve seat sealing ring, which is far away from the annular groove, and the arc-shaped surface is abutted with the ball body.
Preferably, a first blind hole is formed in the middle of the valve rod, and a first abutting ball is elastically pressed between the first blind hole and the valve body.
Preferably, the first blind hole is provided with a first spring, and the first abutting ball is in compression joint with the first spring between the first blind hole.
Preferably, the valve body is provided with a second U-shaped ring groove, and the second U-shaped ring groove is in sealing connection with the ball body through the valve seat sealing ring.
Preferably, the second U-shaped ring groove has the same structural dimension as the first U-shaped ring groove.
Preferably, a second blind hole is formed in the side wall of the bottom end of the valve rod, a U-shaped groove is formed in the top end of the ball body, and a second abutting ball is pressed between the second blind hole and the U-shaped groove through a spring.
Preferably, a framework seal is crimped between the connector and the valve body.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the valve seat structure of the floating ball valve can not only realize effective sealing of the floating ball valve, but also reduce torque, and can provide a certain compensation amount when the valve seat is worn, so that the valve is sealed again; the disc spring is added on the basis of the existing soft seal, and the valve seat can slightly move under the action of a medium due to the existence of the disc spring in the use process of the valve; the valve seat can be realized by simply modifying the existing valve seat, so that the valve seat can be effectively sealed, excessive torque can be prevented, and the service life of the valve seat can be prolonged.
Drawings
Fig. 1 is a schematic structural view of a valve seat structure of a floating ball valve according to the present utility model.
Fig. 2 is an enlarged view of the utility model at a in fig. 1.
Fig. 3 is an enlarged view of the present utility model at B in fig. 1.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and specific examples.
In fig. 1 to 3, a valve seat structure of a floating ball valve includes a connecting body 10, a ball 50 and a valve body 15. A skeletal seal 19 is crimped between the connector 10 and the valve body 15. The connector 10 is fixedly connected with the valve body 15 by bolts.
In order to facilitate the elastic abutting of the ball body and the connecting body, a valve seat sealing ring 40 is respectively pressed between the connecting body 10 and the valve body 15 and the ball body 50, and a belleville spring 20 is respectively pressed between the valve seat sealing ring 40 and the connecting body 10 and the valve body 15. An annular groove 41 with an L-shaped structure is arranged at one end of the valve seat sealing ring 40, the annular groove 41 is sequentially pressed against a supporting frame 30 and a belleville spring 20, and the bottom end of the belleville spring 20 is abutted against the connector 10. When the valve rod 70 rotates the ball 50, the valve seat sealing ring 40 is in sealing abutting connection with the ball 50 under the action of the belleville spring 20, and meanwhile compensation is provided when abrasion occurs, so that the sealing performance of the valve is improved.
To facilitate the installation of the seal ring, the connector 10 is provided with a first U-shaped ring groove 11, the valve body 15 is provided with a second U-shaped ring groove 16, and the seal ring 40 of the valve seat is pressed between the first U-shaped ring groove 11 and the ball 50. The second U-shaped groove 16 is sealingly connected to the ball 50 by a seat seal 40. The second U-shaped ring groove 16 has the same structural dimensions as the first U-shaped ring groove 11. An arc-shaped surface 42 is arranged at a corner of the valve seat sealing ring 40 away from the annular groove 41, and the arc-shaped surface 42 is abutted with the ball 50 under the action of the belleville spring 20.
In order to facilitate the driving of the ball body and adjust the torque, the top end of the ball body 50 is elastically abutted against a valve rod 70, a first blind hole 71 is arranged at the middle position of the valve rod 70, a second blind hole 75 is arranged at the side wall of the bottom end of the valve rod 70, a first spring 72 is arranged at the first blind hole 71, and a first abutting ball 73 is elastically pressed between the first blind hole 71 and the valve body 15. The first spring 72 is crimped between the first abutment ball 73 and the first blind hole 71. The top end of the ball 50 is provided with a U-shaped groove 51, and a second abutting ball is pressed between the second blind hole 75 and the U-shaped groove 51 through a spring. The valve rod 70 is elastically abutted with the ball 50 and the valve body 15 respectively, so that torque adjustment is facilitated.
The metal support 30 and the belleville spring 20 are installed on the valve seat sealing ring 40, and then the connecting body 10 is installed, so that the valve seat sealing ring 40 is tightly attached to the ball 50 under the action of spring force, thereby sealing is realized, and meanwhile, when the valve is opened and closed, the valve seat does not completely cover the ball, so that the operation torque is not great. In addition, as the valve is opened and closed, the belleville spring 20 can continue to push the valve seat against the ball after the surface of the valve seat seal ring 40 wears, thereby achieving sealing.
The foregoing is merely a specific application example of the present utility model, and the protection scope of the present utility model is not limited in any way. All technical schemes formed by equivalent transformation or equivalent substitution fall within the protection scope of the utility model.
Claims (10)
1. A valve seat structure of a floating ball valve is characterized in that: the valve seat sealing device comprises a connecting body (10), a ball body (50) and a valve body (15), wherein the connecting body (10) and the valve body (15) are respectively in compression joint with a valve seat sealing ring (40) between the ball body (50), the valve seat sealing ring (40) is respectively in compression joint with a belleville spring (20) between the connecting body (10) and the valve body (15), the top end of the ball body (50) is elastically abutted against a valve rod (70), and the connecting body (10) is fixedly connected with the valve body (15) through bolts.
2. The valve seat structure of the floating ball valve according to claim 1, wherein an annular groove (41) with an L-shaped structure is provided at one end of the valve seat sealing ring (40), the annular groove (41) is sequentially pressed against a supporting frame (30) and a belleville spring (20), and the bottom end of the belleville spring (20) is abutted against the connecting body (10).
3. A seat structure of a floating ball valve according to claim 2, characterized in that said connecting body (10) is provided with a first U-shaped groove (11), said first U-shaped groove (11) being in pressure contact with said seat seal (40) with said ball (50).
4. The valve seat structure of the floating ball valve according to claim 2, wherein an arc-shaped surface (42) is arranged at a corner of the valve seat sealing ring (40) away from the ring groove (41), and the arc-shaped surface (42) is abutted with the ball body (50).
5. The valve seat structure of the floating ball valve according to claim 1, wherein a first blind hole (71) is provided at a middle position of the valve rod (70), and a first abutting ball (73) is elastically pressed between the first blind hole (71) and the valve body (15).
6. The valve seat structure of a floating ball valve according to claim 5, wherein said first blind hole (71) is provided with a first spring (72), and said first abutment ball (73) is in pressure contact with said first spring (72) with said first blind hole (71).
7. A seat structure for a floating ball valve according to claim 3, wherein said valve body (15) is provided with a second U-shaped groove (16), said second U-shaped groove (16) being sealingly connected to said ball (50) by means of said seat seal (40).
8. A seat structure of a floating ball valve according to claim 7, characterized in that the second U-shaped groove (16) is of the same structural dimensions as the first U-shaped groove (11).
9. The valve seat structure of the floating ball valve according to claim 1, wherein a second blind hole (75) is provided at the bottom end side wall of the valve rod (70), a U-shaped groove (51) is provided at the top end of the ball body (50), and a second abutting ball is pressed between the second blind hole (75) and the U-shaped groove (51) through a spring.
10. A seat structure for a floating ball valve according to claim 1, wherein a skeletal seal (19) is crimped between the connecting body (10) and the valve body (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322308420.3U CN220706464U (en) | 2023-08-28 | 2023-08-28 | Valve seat structure of floating ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322308420.3U CN220706464U (en) | 2023-08-28 | 2023-08-28 | Valve seat structure of floating ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220706464U true CN220706464U (en) | 2024-04-02 |
Family
ID=90437311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322308420.3U Active CN220706464U (en) | 2023-08-28 | 2023-08-28 | Valve seat structure of floating ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220706464U (en) |
-
2023
- 2023-08-28 CN CN202322308420.3U patent/CN220706464U/en active Active
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