High-sealing ball valve with built-in pressure reduction structure

Abstract

The utility model relates to the technical field of ball valves, in particular to a high-sealing ball valve with a built-in pressure reduction structure, which comprises a valve body, a pressure relief assembly is arranged on the valve body, the pressure relief assembly comprises a pressure relief cylinder integrally formed with the valve body, a channel communicated with the inside of the pressure relief cylinder is arranged on the valve body, and a piston is arranged in the pressure relief cylinder. Through the pressure relief assembly arranged on the valve body, the internal pressure of the ball valve is effectively controlled and adjusted. A piston in the pressure relief assembly is tightly attached to the inner wall of a pressure relief cylinder, the sealing performance is ensured, meanwhile, the position of the piston can be conveniently adjusted through an adjusting lead screw, and therefore accurate control over the internal pressure is achieved. By means of the design, the safety and reliability of the ball valve are improved, and the ball valve can adapt to more application scenes with different pressure requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a high-sealing ball valve with an internal pressure reducing structure. Background Technique

[0002] In a fluid control system, as an important control element, the ball valve is widely used in various industrial fields. The traditional design of the ball valve mainly focuses on its opening and closing performance and sealing performance to ensure the smooth flow and effective cut-off of the fluid in the pipeline. However, in some specific application scenarios, excessive pressure may be generated inside the ball valve due to the change of fluid pressure, which may not only damage the ball valve itself but also pose a safety hazard to the entire fluid control system.

[0003] To solve this problem, some external pressure reducing devices or pressure regulating valves are usually adopted in the existing technologies to assist in controlling the pressure inside the ball valve. However, these external devices not only increase the complexity and cost of the system but also may cause safety problems such as leakage due to improper connection or poor maintenance. In addition, the cooperation between the external device and the ball valve also requires precise debugging and regular maintenance, bringing an additional burden to the user. In view of this, we propose a high-sealing ball valve with an internal pressure reducing structure. Content of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a high-sealing ball valve with an internal pressure reducing structure.

[0005] The technical solution of the utility model is as follows:

[0006] The high-sealing ball valve with an internal pressure reducing structure includes a valve body, and a pressure relief component is provided on the valve body. The pressure relief component includes a pressure relief cylinder integrally formed with the valve body. A channel communicating with the inside of the pressure relief cylinder is opened on the valve body. A piston is provided in the pressure relief cylinder. A driving plate is fixedly installed at the top of the piston. An adjusting screw rod extending out of the top of the pressure relief cylinder is rotatably installed at the top of the driving plate. The adjusting screw rod is in threaded connection with the pressure relief cylinder. Two guide rods are symmetrically and fixedly connected to the top of the driving plate. The guide rods extend out of the top of the pressure relief cylinder. The outer ring wall of the piston is in close fit with the inner wall of the pressure relief cylinder.

[0007] As a preferred technical solution, a connecting ring is integrally formed coaxially at the bottom of the driving plate, and the connecting ring is connected to the adjusting screw rod through a bearing.

[0008] As a preferred technical solution, a screwing head is integrally formed coaxially at the top end of the adjusting screw rod, and anti-slip threads are provided on the circumferential outer wall of the screwing head.

[0009] As a preferred technical solution, sealing gaskets are provided at the contact positions between the valve core in the valve body and the inside of the valve housing, and external connectors are provided at both ends of the valve body.

[0010] As a preferred technical solution, the external connection part includes a flange plate integrally formed with the valve body and an annular gasket used in cooperation with the flange plate. An annular extrusion plate is provided on the flange plate. An annular threaded plate is coaxially welded to the outer wall of the annular extrusion plate close to the valve body. Four notches are symmetrically formed on the annular threaded plate.

[0011] As a preferred technical solution, a placement groove for placing the annular extrusion plate and a through hole for the annular threaded plate to pass through are formed on the flange plate. When the annular extrusion plate is located in the placement groove, its outer wall is in close fit with the outer wall of the flange plate.

[0012] As a preferred technical solution, thread lines are provided on the outer wall of the annular threaded plate, and a driving nut threadedly connected to the outer wall of the annular threaded plate is rotatably installed on the outer wall of the flange plate close to the valve body.

[0013] As a preferred technical solution, a plurality of equally spaced installation holes are formed on the flange plate, and there are at least 6 installation holes.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] Through the pressure relief component provided on the valve body, the present utility model realizes the effective control and adjustment of the internal pressure of the ball valve. The piston in the pressure relief component is in close fit with the inner wall of the pressure relief cylinder, ensuring the sealing performance. At the same time, the position of the piston can be conveniently adjusted by the adjusting screw rod, so as to realize the precise control of the internal pressure. This design not only improves the safety and reliability of the ball valve, but also enables the ball valve to adapt to more application scenarios with different pressure requirements. Brief Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 in the present utility model Figure 1 is the internal structural schematic diagram;

[0018] Figure 3 in the present utility model Figure 2 is the partial structural schematic diagram

[0019] Figure 4 is the structural schematic diagram of the external connection part of the present utility model;

[0020] Figure 5 is the split structural schematic diagram of the external connection part of the present utility model;

[0021] The meanings of the various reference numerals in the drawings are:

[0022] 1. Valve body; 10. Valve core; 11. Sealing gasket; 12. Channel; 2. External component; 20. Flange; 200. Placing groove; 201. Perforation; 21. Mounting hole; 22. Annular extrusion plate; 23. Annular threaded plate; 230. Notch; 24. Driving nut; 25. Annular gasket; 3. Pressure relief component; 30. Pressure relief cylinder; 31. Driving plate; 310. Connecting ring; 311. Bearing; 32. Piston; 33. Adjusting screw rod; 34. Wrench head; 35. Guide rod. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-5 , the present invention provides a technical solution:

[0025] A high-sealing ball valve with an internal pressure reducing structure, including a valve body 1, a pressure relief component 3 is provided on the valve body 1, the pressure relief component 3 includes a pressure relief cylinder 30 integrally formed with the valve body 1, a channel 12 communicating with the inside of the pressure relief cylinder 30 is opened on the valve body 1, a piston 32 is provided in the pressure relief cylinder 30, a driving plate 31 is fixedly installed at the top of the piston 32, an adjusting screw rod 33 extending out of the top of the pressure relief cylinder 30 is rotatably installed at the top of the driving plate 31, the adjusting screw rod 33 is threadedly connected with the pressure relief cylinder 30, two guide rods 35 are symmetrically and fixedly connected to the top of the driving plate 31, the guide rods 35 extend out of the top of the pressure relief cylinder 30, and the outer wall of the piston 32 is in close fit with the inner wall of the pressure relief cylinder 30. Through the pressure relief component 3 provided on the valve body 1, effective control and adjustment of the internal pressure of the ball valve are realized. The piston 32 in the pressure relief component 3 is in close fit with the inner wall of the pressure relief cylinder 30, ensuring the sealing performance. At the same time, the position of the piston 32 can be conveniently adjusted through the adjusting screw rod 33, so as to realize the precise control of the internal pressure. This design not only improves the safety and reliability of the ball valve, but also enables the ball valve to adapt to more application scenarios with different pressure requirements.

[0026] As a preference of this embodiment, a connecting ring 310 is integrally formed coaxially at the bottom of the driving plate 31, and the connecting ring 310 is connected with the adjusting screw rod 33 through a bearing 311. Through the connection of the bearing 311, the adjusting screw rod 33 can rotate freely relative to the driving plate 31 without affecting the up and down movement of the piston 32, thereby improving the flexibility and convenience of operation. At the same time, the design of the connecting ring 310 also enhances the connection strength between the driving plate 31 and the adjusting screw rod 33, improving the stability of the overall structure.

[0027] Preferably in this embodiment, a screwing head 34 is integrally formed coaxially at the top end of the adjusting screw rod 33, and anti-slip lines are provided on the circumferential outer wall of the screwing head 34. The design of the screwing head 34 makes the adjusting screw rod 33 easier to operate manually, and the setting of the anti-slip lines increases the friction between the hand and the screwing head 34, preventing slippage during operation and improving the safety and accuracy of the operation.

[0028] Preferably in this embodiment, sealing gaskets 11 are provided at the contact positions between the valve core 10 in the valve body 1 and the inner part of the valve housing, and external connectors 2 are provided at both ends of the valve body 1. The setting of the sealing gaskets 11 further improves the sealing performance of the ball valve and prevents the leakage of internal media. The design of the external connectors 2 enables the ball valve to be conveniently connected to other pipelines or devices, improving the versatility and applicability of the ball valve.

[0029] Preferably in this embodiment, the external connector 2 includes a flange plate 20 integrally formed with the valve body 1 and an annular gasket 25 used in cooperation with the flange plate 20. An annular pressing plate 22 is provided on the flange plate 20. An annular threaded plate 23 is coaxially welded to the outer wall of the annular pressing plate 22 on the side close to the valve body 1, and four notches 230 are symmetrically formed on the annular threaded plate 23. The provided annular pressing plate 22 can further press the annular gasket 25 after the flange plate 20 is connected to the external pipeline to effectively improve the sealing performance, and the annular threaded plate 23 is used to drive the annular pressing plate 22 to move.

[0030] Preferably in this embodiment, a placement groove 200 for placing the annular pressing plate 22 and a through hole 201 for the annular threaded plate 23 to pass through are formed on the flange plate 20. When the annular pressing plate 22 is located in the placement groove 200, its outer wall is in close fit with the outer wall of the flange plate 20. The design of the placement groove 200 and the through hole 201 enables the annular pressing plate 22 to be firmly installed on the flange plate 20, and at the same time ensures the close fit between the annular pressing plate 22 and the flange plate 20, further improving the sealing performance and stability of the external connector 2.

[0031] Preferably in this embodiment, thread lines are provided on the outer wall of the annular threaded plate 23, and a driving nut 24 threadedly connected to the outer wall of the annular threaded plate 23 is rotatably installed on the outer wall of the flange plate 20 on the side close to the valve body 1. The design of the thread lines and the driving nut 24 enables the annular driving plate 31 to be conveniently moved by rotating the driving nut 24, thereby realizing the driving of the annular pressing plate 22.

[0032] Preferably, in this embodiment, a plurality of mounting holes 21 are provided on the flange 20 at equal intervals, and at least six mounting holes 21 are provided. The design of the mounting holes 21 enables the flange 20 to be more conveniently connected to external equipment or pipelines through bolts or other connecting parts. The equal interval setting ensures the uniformity and stability of the connection, and improves the overall strength and reliability of the ball valve.

[0033] When the high-sealing ball valve with an internal pressure reducing structure of the present utility model is in use:

[0034] Pressure regulation and control: When the internal pressure of the ball valve rises to the level that needs to be adjusted, the operator adjusts the position of the piston 32 by rotating the knob 34 on the adjusting screw rod 33. Since the adjusting screw rod 33 is threadedly connected to the pressure relief cylinder 30, rotating the adjusting screw rod 33 will cause the piston 32 to move up and down in the pressure relief cylinder 30. The driving plate 31 fixedly connected to the top of the piston 32 moves together with the piston 32, and the guide rod 35 on the driving plate 31 ensures the linearity and stability of the movement of the piston 32. The close fit between the outer wall of the piston 32 and the inner wall of the pressure relief cylinder 30 ensures the sealing performance during the pressure relief process and prevents pressure leakage. When the piston 32 moves upward, the space in the pressure relief cylinder 30 increases, and part of the pressure inside the ball valve enters the pressure relief cylinder 30 through the channel 12 and is released, thereby realizing the effective control and adjustment of the internal pressure of the ball valve.

[0035] High sealing performance: Sealing gaskets 11 are provided at the contact positions between the valve core 10 in the valve body 1 and the inside of the valve housing, which further improves the sealing performance of the ball valve and prevents the leakage of internal media. At the same time, the external connectors 2 at both ends of the valve body 1 are designed to enable the ball valve to be conveniently connected to other pipelines or equipment, improving the versatility and applicability of the ball valve.

[0036] High-sealing connection of the external connector 2: The external connector 2 includes a flange 20 integrally formed with the valve body 1 and an annular gasket 25 used in cooperation with the flange 20. After the flange 20 is connected to the external pipeline, the annular pressing plate 22 will further compress the annular gasket 25, effectively improving the sealing performance. The thread lines on the annular threaded plate 23 cooperate with the driving nuts 24 on the flange 20, enabling the annular pressing plate 22 to be conveniently moved by rotating the driving nuts 24, thereby realizing the tight compression of the annular gasket 25.

[0037] In summary, the high-sealing ball valve with an internal pressure reducing structure of the present utility model realizes the effective control and adjustment of the internal pressure of the ball valve through the design of the pressure relief assembly 3. At the same time, through other optimized designs, the sealing performance, operation flexibility and connection stability of the ball valve are improved, enabling the ball valve to adapt to more application scenarios with different pressure requirements.

[0038] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. High-sealing ball valve with built-in pressure relief structure, characterized in that: It includes a valve body (1), on which a pressure relief component (3) is provided. The pressure relief component (3) includes a pressure relief cylinder (30) integrally formed with the valve body (1). A channel (12) communicating with the inside of the pressure relief cylinder (30) is provided on the valve body (1). A piston (32) is arranged inside the pressure relief cylinder (30). A driving plate (31) is fixedly installed at the top of the piston (32). An adjusting screw rod (33) extending from the top of the pressure relief cylinder (30) is rotatably installed at the top of the driving plate (31). The adjusting screw rod (33) is threadedly connected to the pressure relief cylinder (30). Two guide rods (35) are symmetrically and fixedly connected to the top of the driving plate (31). The guide rods (35) extend from the top of the pressure relief cylinder (30). The outer ring wall of the piston (32) is in close fit with the inner wall of the pressure relief cylinder (30).

2. The high-sealing ball valve with an internal pressure relief structure according to claim 1, characterized in that: A connecting ring (310) is integrally formed coaxially at the bottom of the driving plate (31). The connecting ring (310) is connected to the adjusting screw rod (33) through a bearing (311).

3. The highly-sealed ball valve with an internal pressure relief structure according to claim 2, wherein: A screwing head (34) is integrally formed coaxially at the top end of the adjusting screw rod (33). Anti-slip threads are provided on the circumferential outer wall of the screwing head (34).

4. The highly-sealed ball valve with an internal decompression structure as described in claim 3, characterized in that: Sealing gaskets (11) are provided at the contact positions between the valve core (10) inside the valve body (1) and the inner part of the valve housing. External connectors (2) are provided at both ends of the valve body (1).

5. The high-sealing ball valve with an internal pressure relief structure according to claim 4, characterized in that: The external connector (2) includes a flange plate (20) integrally formed with the valve body (1) and an annular gasket (25) used in cooperation with the flange plate (20). An annular pressing plate (22) is provided on the flange plate (20). An annular threaded plate (23) is coaxially welded to the outer wall of the annular pressing plate (22) on the side close to the valve body (1). Four notches (230) are symmetrically provided on the annular threaded plate (23).

6. The highly-sealed ball valve with an internal decompression structure according to claim 5, wherein: A placement groove (200) for placing the annular pressing plate (22) and a through hole (201) for the annular threaded plate (23) to pass through are provided on the flange plate (20). When the annular pressing plate (22) is located in the placement groove, its outer wall is in close fit with the outer wall of the flange plate (20).

7. The high-sealing ball valve with an internal decompression structure according to claim 6, characterized in that: Thread lines are provided on the outer ring wall of the annular threaded plate (23). A driving nut (24) threadedly connected to the outer ring wall of the annular threaded plate (23) is rotatably installed on the outer wall of the flange plate (20) on the side close to the valve body (1).

8. The high-sealing ball valve with an internal pressure relief structure according to claim 7, characterized in that: A number of equally spaced installation holes (21) are provided on the flange plate (20), and there are at least 6 installation holes (21).

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