Ball valve with damping function

Abstract

The utility model discloses a ball valve with a damping function, which comprises a valve body, a valve core and a valve rod, a groove is arranged on the top surface of the valve rod, a spring is arranged in the groove, a pressing plate is connected onto the spring, threads are arranged on the inner wall of the groove, a screw rod is in threaded connection with the inside of the groove, and a handle is arranged on the outer side of the screw rod. The spring in the valve rod and the screw for extruding the spring can absorb and reduce vibration caused by a pipeline system or fluid flow, prevent the ball valve from being opened or closed accidentally when the ball valve is vibrated, and accordingly improve safety and reliability of the pipeline system. The rotation range of the valve rod is limited through application of the inner limiting pipe and the outer limiting pipe, and misoperation caused by vibration is further avoided. And the compression degree of the spring can be adjusted by rotating the screw rod, so that a user can adjust the damping strength according to different working conditions and requirements, and the applicability and flexibility of the ball valve are improved.

Description

Technical Field

[0001] The utility model relates to a ball valve with a shock-absorbing function. Background Art

[0002] Ball valves are widely used in industrial fluid control systems. Their switching function is mainly achieved by the rotation of the ball (spool) in the middle. In many industrial processes, especially in petrochemicals, natural gas transportation and high-pressure fluid control systems, ball valves need to be able to operate stably in harsh working environments, including withstanding high pressure from inside the system and vibration from the external environment.

[0003] Traditional ball valve designs often focus on their sealing performance, pressure resistance, and corrosion resistance. However, when faced with external interference such as vibration, unstable operation may occur, and even cause the valve to open or close unexpectedly, resulting in media leakage or system failure. Utility Model Content

[0004] The main purpose of the utility model is to provide a ball valve with a shock-absorbing function to solve the problems raised in the above-mentioned background technology.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A ball valve with a shock-absorbing function comprises a valve body, a valve core and a valve stem, wherein a groove is arranged on the top surface of the valve stem, a spring is arranged in the groove, a pressure plate is connected to the spring, a thread is arranged on the inner wall of the groove, a screw is connected to the thread inside the groove, the screw is rotated downward so that its bottom contacts the pressure plate, and the pressure plate is squeezed to move downward to compress the spring, and a handle is arranged on the outside of the screw.

[0007] Preferably, the screw rod is divided into a connecting section and an inserting section, the connecting section is provided with threads on the outside, and the diameter of the inserting section is smaller than the diameter of the connecting section.

[0008] Preferably, an arc-shaped groove is provided above the pressing plate, and the bottom of the insertion section is an arc-shaped structure.

[0009] Preferably, an outer limiting tube is arranged above the valve body, and an arc-shaped notch is arranged on the side wall of the outer limiting tube, and the arc of the arc-shaped notch is 90 degrees.

[0010] Preferably, an inner limit tube is arranged inside the outer limit tube, the inner limit tube is sleeved on the outer side of the valve stem, a limit block is arranged at the bottom of the inner limit tube, the limit block extends out of the arc-shaped notch, and a first fixing hole is arranged on the limit block.

[0011] Preferably, fixing plates are provided on the outer wall of the outer limiting tube at both sides of the arc-shaped notch, and the fixing plates are provided with second fixing holes at the positions where the valve core is opened and closed.

[0012] Preferably, a hexagonal groove is provided above the inner limit tube, a hexagonal plug is provided in the hexagonal groove, the hexagonal plug is sleeved on the outside of the screw, a locking notch is provided on the screw, and a locking strip is provided on the hexagonal plug.

[0013] Preferably, a nut is provided on the screw rod above the hexagonal plug.

[0014] Preferably, a telescopic rod is arranged inside the spring, and two ends of the telescopic rod are respectively connected to the bottom of the groove and the bottom of the pressure plate.

[0015] Preferably, the handle is connected to the outside of the inner limiting tube.

[0016] Beneficial technical effects of the utility model:

[0017] The spring inside the valve stem and the screw for squeezing the spring provided by the utility model can absorb and reduce vibrations caused by the pipeline system or fluid flow, and prevent the ball valve from accidentally opening or closing when it is vibrated, thereby improving the safety and reliability of the pipeline system. The application of the inner limit tube and the outer limit tube limits the rotation range of the valve stem, further avoiding misoperation caused by vibration. The degree of spring compression can be adjusted by rotating the screw, so that the user can adjust the shock absorption force according to different working conditions and needs, thereby improving the applicability and flexibility of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the ball valve structure of an embodiment of the utility model;

[0019] Figure 2 A cross-sectional view of a ball valve according to an embodiment of the utility model;

[0020] Figure 3 This is an internal cross-sectional view of a valve stem according to an embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the spring, pressure plate and telescopic rod structure of an embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the screw structure of an embodiment of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the inner limit tube of an embodiment of the utility model;

[0024] Figure 7This is a schematic diagram of the structure of an external limit tube according to an embodiment of the utility model;

[0025] Figure 8 This is a schematic diagram of the hexagonal plug structure of an embodiment of the utility model.

[0026] In the figure: 1. valve body; 2. valve core; 3. valve stem; 4. groove; 5. spring; 6. pressure plate; 7. screw; 701. connecting section; 702. insertion section; 8. handle; 9. arc-shaped groove; 10. outer limit tube; 11. arc-shaped notch; 12. inner limit tube; 13. limit block; 14. first fixing hole; 15. fixing plate; 16. second fixing hole; 17. hexagonal groove; 18. hexagonal plug; 19. positioning notch; 20. positioning strip; 21. nut; 22. telescopic rod. DETAILED DESCRIPTION

[0027] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0028] like Figure 1-Figure 8 As shown, the ball valve with shock-absorbing function provided in this embodiment includes a valve body 1, a valve core 2 and a valve stem 3, including a groove 4 arranged on the top surface of the valve stem 3, a spring 5 arranged in the groove 4, a pressure plate 6 connected to the spring 5, a thread arranged on the inner wall of the groove 4, a screw 7 connected to the inner thread of the groove 4, the screw 7 is rotated downward so that its bottom contacts the pressure plate 6, and squeezes the pressure plate 6 to move downward to compress the spring 5, a handle 8 is arranged on the outer side of the screw 7, the combination of the spring 5 and the pressure plate 6 can absorb and reduce the impact caused by external vibration, prevent the ball valve from accidentally opening or closing when it is vibrated, and improve the stability of the entire system, by rotating the screw 7, the compression degree of the spring 5 can be adjusted, thereby adjusting the shock-absorbing force, so that the ball valve can adapt to different working environments and conditions.

[0029] In this embodiment, if Figure 5 As shown, the screw rod 7 is divided into a connecting section 701 and an inserting section 702 . The connecting section 701 is provided with threads on the outside. The diameter of the inserting section 702 is smaller than that of the connecting section 701 , so as to facilitate insertion into the groove 4 of the valve stem 3 .

[0030] In this embodiment, if Figure 2 As shown, an arc-shaped groove 9 is provided above the pressing plate 6, and the bottom of the insertion section 702 is an arc-shaped structure, which reduces the friction between the screw 7 and the pressing plate 6 and makes the downward rotation process smoother.

[0031] In this embodiment, if Figure 2As shown, an outer limit tube 10 is arranged above the valve body 3, and an arc-shaped notch 11 is arranged on the side wall of the outer limit tube 10, and the arc of the arc-shaped notch 11 is 90 degrees. An inner limit tube 12 is arranged on the inner side of the outer limit tube 10, and the inner limit tube 12 is sleeved on the outer side of the valve stem 1. A limit block 13 is arranged at the bottom of the inner limit tube 12, and the limit block 13 extends out of the arc-shaped notch 11. The 90-degree arc-shaped notch 11 on the outer limit tube 10 limits the rotation range of the inner limit tube 12 and the valve stem 3, avoids excessive rotation, and improves the safety of operation.

[0032] In this embodiment, if Figure 6 and Figure 7 As shown, a first fixing hole 14 is provided on the limit block 13, and fixing plates 15 are provided on the outer wall of the outer limit tube 10 on both sides of the arc-shaped notch 11. The fixing plate 15 is provided with second fixing holes 16 at the open and closed positions of the valve core 2. When the limit block 13 is rotated to the open or closed position of the ball valve, bolts can be inserted into the first fixing hole 14 and the second fixing hole 16 to fix the position to prevent accidental rotation.

[0033] In this embodiment, if Figure 7 and Figure 8 As shown, a hexagonal groove 17 is provided above the inner limit tube 12, and a hexagonal plug 18 is provided in the hexagonal groove 17. The hexagonal plug 18 is sleeved on the outer side of the screw 7. A locking notch 19 is provided on the screw 7. A locking strip 20 is provided on the hexagonal plug 18. The handle 8 is connected to the outer side of the inner limit tube 12, and the hexagonal plug 18 is sleeved on the outer side of the screw 7. In conjunction with the locking strip 20 and the locking notch 19, when the handle 8 and the inner limit tube 12 are rotated, the screw 7 and the valve stem 3 can be driven to rotate, that is, the opening and closing of the valve core 2 can be controlled.

[0034] In this embodiment, if Figure 1 As shown, a nut 21 is provided on the screw rod 7 above the hexagonal plug block 18 to fix the various components.

[0035] In this embodiment, if Figure 2 As shown, a telescopic rod 22 is arranged inside the spring 5, and two ends of the telescopic rod 22 are respectively connected to the bottom of the groove 4 and the bottom of the pressure plate 6. The telescopic rod 22 enhances the stability of the spring 5 and ensures that a stable supporting force is provided between the groove 4 and the pressure plate 6.

[0036] In summary, in this embodiment, the spring 5 inside the valve stem 3 and the screw 7 for squeezing the spring 5 provided in this embodiment can absorb and reduce vibrations caused by the pipeline system or fluid flow, and prevent the ball valve from accidentally opening or closing when it is vibrated, thereby improving the safety and reliability of the pipeline system. The application of the inner limit tube 12 and the outer limit tube 10 limits the rotation range of the valve stem 3, further avoiding misoperation caused by vibration. The compression degree of the spring 5 can be adjusted by rotating the screw 7, so that the user can adjust the shock absorption force according to different working conditions and requirements, thereby improving the applicability and flexibility of the ball valve.

[0037] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A ball valve with a shock absorbing function, comprising a valve body (1), a valve core (2) and a valve stem (3), characterized in that: The valve stem (3) comprises a top surface provided with a groove (4), a spring (5) is arranged in the groove (4), a pressure plate (6) is connected to the spring (5), the inner wall of the groove (4) is provided with a thread, a screw rod (7) is connected to the inner thread of the groove (4), the screw rod (7) is rotated downward so that its bottom contacts the pressure plate (6), and presses the pressure plate (6) to move downward to compress the spring (5), and a handle (8) is arranged on the outer side of the screw rod (7).

2. A ball valve with a shock absorbing function according to claim 1, characterized in that: The screw rod (7) is divided into a connecting section (701) and an inserting section (702); a thread is arranged on the outside of the connecting section (701); and the diameter of the inserting section (702) is smaller than the diameter of the connecting section (701).

3. A ball valve with shock absorbing function according to claim 2, characterized in that: An arc-shaped groove (9) is provided above the pressing plate (6), and the bottom of the insertion section (702) is an arc-shaped structure.

4. The ball valve with shock absorbing function according to claim 1, characterized in that: An outer limit tube (10) is arranged above the valve body (1), and an arc-shaped notch (11) is arranged on a side wall of the outer limit tube (10), wherein the arc of the arc-shaped notch (11) is 90 degrees.

5. The ball valve with shock absorbing function according to claim 4, characterized in that: An inner limit tube (12) is arranged on the inner side of the outer limit tube (10), the inner limit tube (12) is sleeved on the outer side of the valve stem (3), a limit block (13) is arranged on the bottom of the inner limit tube (12), the limit block (13) extends out of the arc-shaped notch (11), and a first fixing hole (14) is arranged on the limit block (13).

6. The ball valve with shock absorbing function according to claim 5, characterized in that: A fixing plate (15) is provided on the outer wall of the outer limit tube (10) at both sides of the arc-shaped notch (11), and the fixing plate (15) is provided with a second fixing hole (16) at the opening and closing positions of the valve core (2).

7. The ball valve with shock absorbing function according to claim 5, characterized in that: A hexagonal groove (17) is arranged above the inner limit tube (12), a hexagonal plug block (18) is arranged in the hexagonal groove (17), the hexagonal plug block (18) is sleeved on the outside of the screw rod (7), a locking notch (19) is arranged on the screw rod (7), and a locking strip (20) is arranged on the hexagonal plug block (18).

8. The ball valve with shock absorbing function according to claim 7, characterized in that: A nut (21) is provided on the screw rod (7) above the hexagonal plug block (18).

9. The ball valve with shock absorbing function according to claim 1, characterized in that: A telescopic rod (22) is arranged inside the spring (5), and two ends of the telescopic rod (22) are respectively connected to the bottom of the groove (4) and the bottom of the pressure plate (6).

10. The ball valve with shock absorbing function according to claim 5, characterized in that: The handle (8) is connected to the outside of the inner limiting tube (12).

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