Three-way pneumatic ball valve with anti-deflection and anti-static functions

Abstract

The utility model belongs to the technical field of three-way pneumatic ball valves, and particularly relates to a three-way pneumatic ball valve with anti-deflection and anti-static functions, which comprises a shell, a flange pipe is fixedly connected to the outer wall of the top of the shell through bolts, an electric actuator is fixedly connected to the outer wall of the top of the flange pipe through screws, and a valve rod is arranged on the outer wall of the bottom of the valve rod. A valve element is arranged on the outer wall of the bottom of the valve rod. The conducting ring on the valve rod is matched with the grounding wire, static electricity generated by fluid friction can be conducted out to the ground in time, potential safety hazards caused by static electricity accumulation are eliminated, and the using requirements of flammable and explosive working conditions are met; the positioning block in the connecting sleeve is accurately clamped with the positioning groove in the bottom of the shell under the action of the spring, the position of the valve element after rotation can be effectively limited, deflection caused by fluid pressure impact is avoided, it is ensured that a flow channel opening of the valve element is accurately in butt joint with a three-way pipe opening, and the problem that a valve element of a traditional valve is prone to deflection is solved.

Description

Technical Field

[0001] This utility model relates to the field of three-way pneumatic ball valve technology, and in particular to a three-way pneumatic ball valve with anti-deflection and anti-static functions. Background Technology

[0002] Three-way pneumatic ball valves are commonly used control components in industrial fluid transport systems. They utilize pneumatic actuation to rotate the valve core, thereby controlling the opening and closing of the three-way port and switching the fluid flow direction. They are widely used in petroleum, chemical, and water treatment industries. Their core function is to precisely adjust the fluid transport path according to operating conditions. They are characterized by their compact structure, convenient operation, and rapid switching, making them a key device for controlling the branching and merging of fluid pipelines.

[0003] However, in actual use, traditional three-way pneumatic ball valves have some problems:

[0004] On the one hand, when the valve core rotates to switch the flow direction, it is easily deflected by the impact of fluid pressure or the influence of installation accuracy, which causes the valve core flow channel port to deviate from the T-shaped pipe port. This not only affects the fluid delivery efficiency, but may also cause safety hazards such as sealing failure and leakage. On the other hand, when the fluid flows in the pipeline, it will generate static electricity by rubbing against the pipe wall and valve core. Static electricity accumulation may cause sparks, which is extremely risky, especially in flammable and explosive conditions. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a three-way pneumatic ball valve with anti-deflection and anti-static functions, which overcomes the deficiencies of existing technologies and effectively solves the problems of easy deflection of the valve core and high risk of static electricity accumulation in traditional three-way pneumatic ball valves.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A three-way pneumatic ball valve with anti-deflection and anti-static functions includes a housing. A flange tube is fixedly connected to the top outer wall of the housing by bolts, and an electric actuator is fixedly connected to the top outer wall of the flange tube by screws. A valve stem is provided on the bottom outer wall of the electric actuator, and a valve core is provided on the bottom outer wall of the valve stem. A conductive ring is sleeved inside the flange tube at the top of the outer wall of the valve stem, and a grounding wire is fixedly connected to one side of the outer wall of the conductive ring.

[0008] A connecting sleeve is welded to the center of the outer wall at the bottom of the valve core, and a positioning block is slidably connected to the inner wall of one side of the connecting sleeve. A spring is fixedly connected between the positioning block and the connecting sleeve.

[0009] Preferably, the outer wall at the bottom of the housing has equidistantly distributed positioning grooves, and the size of the positioning grooves is adapted to the size of the positioning block.

[0010] Preferably, the bottom outer wall of the connecting sleeve is provided with a pointer, and the pointer corresponds one-to-one with the positioning block.

[0011] Preferably, the outer wall of the housing is provided with three-way pipe openings on three sides, and the outer wall of the valve core is provided with flow channels on three sides.

[0012] Preferably, a sealing groove is provided on the inner wall of the three-way pipe near the housing, and a sealing ring is filled on the inner wall of the sealing groove, and the sealing ring is interference-fitted with the valve core.

[0013] Preferably, a boss is provided at the connection between the valve stem and the valve core, and an anti-flyout groove is provided on the inner wall of the top of the housing, with the boss located on the inner wall of the anti-flyout groove.

[0014] Preferably, a sealed bearing is provided at the connection between the housing and the flange pipe, and the valve stem is rotatably connected to the inner wall of the housing through the sealed bearing.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This design features a three-way pneumatic ball valve with anti-deflection and anti-static functions. The conductive ring on the valve stem works in conjunction with the grounding wire to promptly discharge static electricity generated by fluid friction to the ground, eliminating safety hazards caused by static electricity accumulation and meeting the usage requirements of flammable and explosive environments. At the same time, the sealing groove on the inner wall of the three-way port is filled with a sealing ring, which fits tightly with the valve core, effectively enhancing the sealing effect and preventing fluid leakage. The protrusion at the connection between the valve stem and the valve core is stuck in the anti-flyout groove of the housing, which can prevent the valve core from flying out due to excessive pressure or loose connection, thus improving structural stability.

[0017] 2. The three-way pneumatic ball valve designed in this way has anti-deflection and anti-static functions. By setting a connecting sleeve at the bottom of the valve core, the positioning block inside the connecting sleeve is precisely engaged with the positioning groove at the bottom of the housing under the action of the spring. This can effectively limit the position of the valve core after rotation, avoid deflection caused by fluid pressure impact, and ensure precise docking between the valve core flow channel and the three-way pipe port, thus solving the problem of easy deflection of the valve core in traditional valves. Attached Figure Description

[0018] Figure 1 This utility model presents a schematic diagram of the overall structure of a three-way pneumatic ball valve with anti-deflection and anti-static functions. Figure 1 ;

[0019] Figure 2 This utility model presents a schematic diagram of the overall structure of a three-way pneumatic ball valve with anti-deflection and anti-static functions. Figure 2 ;

[0020] Figure 3 for Figure 2 Enlarged schematic diagram of part A of the structure;

[0021] Figure 4 This is a schematic diagram showing the overall structure of a three-way pneumatic ball valve with anti-deflection and anti-static functions proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the internal structure of the housing of a three-way pneumatic ball valve with anti-deflection and anti-static functions proposed in this utility model.

[0023] Figure 6 This is a schematic diagram of the connection structure of the connecting sleeve, spring, and positioning groove of a three-way pneumatic ball valve with anti-deflection and anti-static functions proposed in this utility model.

[0024] In the diagram: 1. Housing; 2. Flange pipe; 3. Electric actuator; 4. Valve stem; 5. Valve core; 6. Conductive ring; 7. Grounding wire; 8. Connecting sleeve; 9. Spring; 10. Positioning groove; 11. Positioning block; 12. Pointer; 13. Sealing groove; 14. Sealing ring; 15. Boss; 16. Anti-flyout groove; 17. Sealed bearing; 18. T-shaped pipe port. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figures 1-6 Example 1: A three-way pneumatic ball valve with anti-deflection and anti-static functions includes a housing 1. A flange pipe 2 is fixedly connected to the top outer wall of the housing 1 by bolts, and an electric actuator 3 is fixedly connected to the top outer wall of the flange pipe 2 by screws. A valve stem 4 is provided on the bottom outer wall of the electric actuator 3, and a valve core 5 is provided on the bottom outer wall of the valve stem 4. A conductive ring 6 is sleeved inside the flange pipe 2 at the top of the outer wall of the valve stem 4, and a grounding wire 7 is fixedly connected to one side of the outer wall of the conductive ring 6.

[0027] In the above scheme, the housing 1 serves as the main support structure of the valve, providing installation space for internal components such as the valve core 5 and valve stem 4. The top of the housing is secured to the flange pipe 2 with bolts, ensuring a secure connection and facilitating disassembly and maintenance. The electric actuator 3 (model Q641F-16C) at the top of the flange pipe 2 provides power for the rotation of the valve core 5, enabling automated and precise control and improving operational efficiency. The valve stem 4 passes through the flange pipe 2 and connects to the valve core 5, transmitting the power from the electric actuator 3 to the valve core 5 to achieve flow channel switching. The conductive ring 6 (using a BR-80 graphite conductive ring 6) on the valve stem 4 fits tightly against the outer wall of the valve stem 4, collecting static electricity generated by fluid friction in real time. This static electricity is then discharged to the ground via the grounding wire 7, eliminating the risk of static electricity accumulation at its source and ensuring safe use in flammable and explosive environments.

[0028] In embodiment 2, a connecting sleeve 8 is welded to the center of the bottom outer wall of the valve core 5, and a positioning block 11 is slidably connected to the inner wall of one side of the connecting sleeve 8. A spring 9 is fixedly connected between the positioning block 11 and the connecting sleeve 8. The bottom outer wall of the housing 1 is provided with equidistant positioning grooves 10, and the size of the positioning grooves 10 is adapted to the size of the positioning block 11. A pointer 12 is provided on the bottom outer wall of the connecting sleeve 8, and the pointer 12 corresponds one-to-one with the positioning block 11.

[0029] Through the above scheme, the connecting sleeve 8 at the bottom of the valve core 5 provides a mounting carrier for the positioning block 11 and the spring 9. The spring 9 is always in a compressed state, applying an outward pushing force to the positioning block 11, so that the positioning block 11 always tends to fit against the bottom of the housing 1. When the valve core 5 rotates to the designated position, the positioning block 11 is engaged in the corresponding positioning groove 10 under the action of the spring 9. The mechanical engagement restricts the displacement of the valve core 5, realizing the anti-deflection function and ensuring that the flow port of the valve core 5 is accurately connected to the tee port 18. The pointer 12 at the bottom of the connecting sleeve 8 corresponds one-to-one with the positioning block 11. When the positioning block 11 is engaged in different positioning grooves 10, the pointer 12 points to the corresponding position simultaneously. The operator can intuitively judge the switching state of the valve core 5 through the pointer 12, improving the accuracy of operation.

[0030] The outer wall of the housing 1 is provided with three-way pipe ports 18 on three sides, and the outer wall of the valve core 5 is provided with flow channels on three sides.

[0031] Through the above scheme, the three-way ports 18 on the three sides of the outer wall of the housing 1 correspond to different fluid delivery paths, which can realize the branching, merging, or flow direction switching of the fluid, and meet the usage requirements of complex pipeline systems. The flow channel port on the outer wall of the valve core 5 is adapted to the size of the three-way port 18. When the electric actuator 3 drives the valve core 5 to rotate, the flow channel port will align with different three-way ports 18, realizing the on / off of fluid and the adjustment of flow direction. The structural design is reasonable, the switching is flexible and convenient, and it can adapt to the fluid control requirements under various working conditions.

[0032] A sealing groove 13 is provided on the inner wall of the three-way port 18 near the end of the housing 1, and a sealing ring 14 is filled on the inner wall of the sealing groove 13. The sealing ring 14 is interference-fitted with the valve core 5.

[0033] Through the above-described solution, the sealing groove 13 on the inner wall of the tee port 18 is used to fix the sealing ring 14, preventing the sealing ring 14 from shifting under fluid pressure. The sealing ring 14 is made of elastic material and fits tightly against the outer wall of the valve core 5 to form a sealing surface. This effectively prevents fluid leakage from the gap between the valve core 5 and the tee port 18, significantly improving the valve's sealing performance, reducing fluid waste and safety hazards, and is especially suitable for conveying high-pressure and corrosive fluids.

[0034] A boss 15 is provided at the connection between the valve stem 4 and the valve core 5, and an anti-flyout groove 16 is provided on the inner wall of the top of the housing 1, with the boss 15 located on the inner wall of the anti-flyout groove 16.

[0035] With the above-described design, the boss 15 at the connection between the valve stem 4 and the valve core 5 has an annular structure, slightly larger than the diameter of the valve stem 4. The anti-flyout groove 16 on the top of the housing 1 is an annular groove, and the boss 15 is embedded in the anti-flyout groove 16 and can rotate freely. When the valve core 5 is subjected to upward pressure from the fluid, the boss 15 will be blocked by the bottom of the anti-flyout groove 16, preventing the valve core 5 from flying out of the housing 1 with the fluid pressure. This forms a reliable anti-flyout protection structure, improving the structural stability and safety of the valve during long-term use.

[0036] A sealed bearing 17 is provided at the connection between the housing 1 and the flange pipe 2, and the valve stem 4 is rotatably connected to the inner wall of the housing 1 through the sealed bearing 17.

[0037] Through the above-described scheme, the sealing bearing 17 at the connection between the housing 1 and the flange 2 serves both sealing and support functions. Its outer ring is fixed at the fitting gap between the housing 1 and the flange 2, while its inner ring is tightly fitted with the valve stem 4. This ensures that the valve stem 4 can rotate freely, reducing rotational resistance, and also prevents fluid leakage from the connection between the housing 1 and the flange 2, thereby enhancing the overall sealing performance of the valve. Simultaneously, the sealing bearing 17 also provides radial positioning for the valve stem 4, preventing the valve stem 4 from tilting and causing the valve core 5 to deflect, further ensuring the normal operation of the valve.

[0038] Working principle: First, the flange pipe 2 is fixed to the top of the housing 1 with bolts. The electric actuator 3 is installed on the top of the flange pipe 2 and connected to the valve stem 4. The valve stem 4 passes through the sealed bearing 17 and is fixed to the valve core 5 to complete the valve assembly. The tee port 18 is connected to the external pipeline through the flange. The grounding wire 7 is grounded to complete the anti-static preparation.

[0039] In use, the operator sends a control signal to the electric actuator 3 through the control system. Upon receiving the signal, the electric actuator 3 starts and drives the piston to rotate the valve stem 4 via pneumatic pressure. The valve stem 4 synchronously drives the valve core 5 to rotate inside the housing 1. During the rotation of the valve core 5, the positioning block 11 inside the bottom connecting sleeve 8 is pressed tightly against the bottom of the housing 1 under the thrust of the spring 9. When the flow channel of the valve core 5 is aligned with the target tee port 18, the positioning block 11 precisely engages with the corresponding positioning groove 10, achieving positioning and preventing deflection of the valve core 5. At this time, the pointer 12 at the bottom of the connecting sleeve 8 synchronously indicates the position of the valve core 5, making it convenient for the operator to confirm.

[0040] Fluid enters the valve through the tee port 18, flows through the valve core 5, and is delivered to the target pipeline. The sealing ring 14 inside the tee port 18 fits tightly against the valve core 5 to prevent fluid leakage. Static electricity generated by friction between the fluid and the valve core 5 and the pipe wall during fluid flow is transferred to the conductive ring 6 through the valve stem 4, and then discharged to the ground through the grounding wire 7, eliminating the risk of static electricity accumulation. At the same time, the boss 15 at the connection between the valve stem 4 and the valve core 5 is engaged in the anti-flyout groove 16 to prevent the valve core 5 from flying out due to excessive fluid pressure; the sealing bearing 17 ensures the valve stem 4 can rotate freely while enhancing the sealing performance.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A three-way pneumatic ball valve with anti-deflection and anti-static functions, comprising a housing (1), characterized in that, The outer wall of the top of the housing (1) is fixedly connected to a flange pipe (2) by bolts, and the outer wall of the top of the flange pipe (2) is fixedly connected to an electric actuator (3) by screws. The outer wall of the bottom of the electric actuator (3) is provided with a valve stem (4), and the outer wall of the bottom of the valve stem (4) is provided with a valve core (5). The top of the outer wall of the valve stem (4) is located inside the flange pipe (2) and a conductive ring (6) is sleeved thereon. A grounding wire (7) is fixedly connected to one side of the outer wall of the conductive ring (6). A connecting sleeve (8) is welded to the center of the bottom outer wall of the valve core (5), and a positioning block (11) is slidably connected to the inner wall of one side of the connecting sleeve (8). A spring (9) is fixedly connected between the positioning block (11) and the connecting sleeve (8).

2. A three-way pneumatic ball valve with anti-deflection and anti-static functions according to claim 1, characterized in that, The bottom outer wall of the housing (1) is provided with equidistantly distributed positioning grooves (10), and the size of the positioning grooves (10) is adapted to the size of the positioning block (11).

3. A three-way pneumatic ball valve with anti-deflection and anti-static functions according to claim 1, characterized in that, The bottom outer wall of the connecting sleeve (8) is provided with a pointer (12), and the pointer (12) corresponds one-to-one with the positioning block (11).

4. A three-way pneumatic ball valve with anti-deflection and anti-static functions according to claim 1, characterized in that, The outer wall of the housing (1) is provided with three-way pipe ports (18) on three sides, and the outer wall of the valve core (5) is provided with flow channels on three sides.

5. A three-way pneumatic ball valve with anti-deflection and anti-static functions according to claim 4, characterized in that, A sealing groove (13) is provided on the inner wall of the three-way port (18) near the end of the housing (1), and a sealing ring (14) is filled on the inner wall of the sealing groove (13). The sealing ring (14) is interference-fitted with the valve core (5).

6. A three-way pneumatic ball valve with anti-deflection and anti-static functions according to claim 1, characterized in that, A boss (15) is provided at the connection between the valve stem (4) and the valve core (5), and an anti-flyout groove (16) is provided on the inner wall of the top of the housing (1), with the boss (15) located on the inner wall of the anti-flyout groove (16).

7. A three-way pneumatic ball valve with anti-deflection and anti-static functions according to claim 1, characterized in that, A sealed bearing (17) is provided at the connection between the housing (1) and the flange pipe (2), and the valve stem (4) is rotatably connected to the inner wall of the housing (1) through the sealed bearing (17).

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