Small direction-adjustable flow ball valve

Abstract

The utility model relates to a small direction-adjustable ball valve which comprises an inner-layer ball body, a middle-layer ball body is arranged at the outer end of the inner-layer ball body in a contact mode, an outer-layer ball body is arranged at the outer end of the middle-layer ball body in a contact mode, an upper valve body and a lower valve body are fixedly connected to the outer end of the outer-layer ball body, and a through hole is formed in the center of the inner-layer ball body. A first via hole and a second via hole are formed in the inner-layer ball body, the included angle between the first via hole and the through hole and the included angle between the second via hole and the through hole are 120 degrees, the first via hole and the second via hole communicate with the through hole, and through the structural design of the multiple layers of ball bodies, high stability and modular application of the ball valve are achieved; the multi-flow-direction control function enables the ball valve to flexibly meet the requirements of various working conditions such as one-way, two-way and three-way flow division, the self-cleaning function effectively removes sediments on the hole wall through the spiral groove design, the maintenance frequency is reduced, the sealing compensation mechanism utilizes the characteristics of memory alloy, the sealing performance is enhanced, and the service life of the ball valve is prolonged. Reliable sealing under the high-pressure or high-flow-speed working condition is ensured, and the sealing effect can be rapidly enhanced under the emergency situation.

Description

Technical Field

[0001] The utility model relates to aluminum alloy stamping equipment, in particular to a small directional flow adjustable ball valve. Background Art

[0002] There are many types of fluid control valves on the market today. Ball valves, with their simple structure and easy operation, are widely used in various industries, including petrochemicals, water treatment, and medicine. However, most ball valves only provide simple opening and closing functions, failing to meet the needs of multiple flow direction control. They also suffer from poor sealing performance and are difficult to maintain.

[0003] The specification of Chinese utility model patent CN209876016U discloses a small ball valve, which solves the problem that existing ball valves do not meet the installation requirements of small spaces. It has the advantages of easy assembly, small size, and can meet the installation requirements of small spaces.

[0004] Although the above design solves the problem of installation in a small space, it still has certain limitations, such as the inability to adjust the flow direction, the inability to compensate for the seal, and the lack of self-cleaning function. Utility Model Content

[0005] In response to the above-mentioned existing technology, the technical problem to be solved by the present invention is to provide a small adjustable directional flow ball valve, which realizes multi-flow direction control through a multi-layer sphere structure, reduces the volume of the valve, and can also realize self-cleaning through the vortex generated by the fluid, thereby reducing the maintenance frequency.

[0006] To solve the above problems, the present invention provides a small adjustable directional flow ball valve, comprising an inner sphere, the outer end of the inner sphere contacts a middle sphere, the outer end of the middle sphere contacts an outer sphere, the outer end of the outer sphere is fixedly connected to the upper valve body and the lower valve body, a through hole is opened at the center of the inner sphere, a first through hole and a second through hole are provided inside the inner sphere, the first through hole and the second through hole are both at an angle of 120 degrees to the through hole, and the first through hole and the second through hole are both connected to the through hole, a plurality of through holes are opened at the outer end of the middle sphere, namely a first through hole, a second through hole, a third through hole, a fourth through hole, a fifth through hole, a sixth through hole, and a seventh through hole, the seven through holes are arranged in a clockwise order, an inlet hole and a plurality of outlet holes are opened at the outer end of the outer sphere, the outer end of the inner sphere is fixedly connected to the first upper valve stem, the outer end of the inner sphere is fixedly connected to the first lower valve stem, the outer end of the middle sphere is fixedly connected to the second upper valve stem, and the outer end of the middle sphere is fixedly connected to the second lower valve stem.

[0007] As a further improvement of the present application, the first upper valve stem passes through the middle sphere and the outer sphere and is rotatably connected to the inner end of the second upper valve stem, and the first lower valve stem passes through the middle sphere and the outer sphere and is rotatably connected to the inner end of the second lower valve stem.

[0008] As a further improvement of the present application, the second upper valve stem passes through the outer sphere and is rotatably connected to the inner ends of the upper valve body and the lower valve body, and the second lower valve stem passes through the outer sphere and is rotatably connected to the inner ends of the upper valve body and the lower valve body.

[0009] As a further improvement of the present application, the top end of the upper valve body is fixedly connected to the inlet pipe, the bottom end of the lower valve body is fixedly connected to the first outlet pipe, and the outer end of the lower valve body is fixedly connected to the second outlet pipe and the third outlet pipe.

[0010] As another improvement of the present application, the inner walls of the through hole, the first through hole and the second through hole are all provided with spiral grooves, the top end of the first upper valve stem is fixedly connected to the first electric actuator, and the extra end of the second upper valve stem is fixedly connected to the second electric actuator, and the first electric actuator and the second electric actuator are both communicatively connected to the control system.

[0011] As another improved supplement to the present application, the outer sphere is made of nickel-titanium alloy, which has a shape memory effect and can produce a preset deformation when heated by electric current. A resistance heating element is provided inside the outer sphere, and the resistance heating element is electrically connected to the second upper valve stem through a micro conductive slip ring.

[0012] As another improved supplement to the present application, a sealing ring is fixedly connected to the position of the through hole at the inner end of the upper valve body corresponding to the position of the through hole, the same sealing ring is fixedly connected to the position of the through hole at the inner end of the lower valve body corresponding to the position of the through hole, and the outer ends of the second upper valve stem and the second lower valve stem are rotatably connected to the sealing ring.

[0013] In summary, this solution has the following beneficial effects:

[0014] 1. Multi-layer sphere structure; The multi-layer sphere structure design realizes precise control inside the ball valve through the linkage of the inner sphere, middle sphere and outer sphere. This structure enhances the overall stability of the ball valve and facilitates modular design, making the ball valve adaptable to the needs of different application scenarios.

[0015] 2. Multi-flow direction control: Through the combined rotation of the inner ball and the middle ball, the ball valve can realize multiple flow modes such as one-way flow, two-way diversion and three-way diversion. This multi-flow direction control design makes the ball valve highly flexible and can adapt to various complex working conditions and improve the overall efficiency of the system.

[0016] 3. Self-cleaning function: The spiral groove design on the inner wall of the through hole of the inner sphere generates eddy currents when the fluid passes through, effectively removing sediment or impurities on the hole wall. This self-cleaning function reduces maintenance frequency, ensures that the ball valve can continue to operate efficiently, and does not require frequent disassembly and cleaning, thereby improving the availability and reliability of the equipment.

[0017] 4. Sealing compensation: The outer sphere is made of nickel-titanium alloy and has a shape memory effect. When heated by a resistance heating element, the outer sphere returns to the shape in memory, thereby enhancing the close contact with the valve seat and improving the sealing performance. Under high pressure or high flow rate conditions, dynamic sealing compensation is achieved by heating the memory alloy to prevent leakage, and in an emergency, the sealing performance is quickly enhanced to prevent further losses or accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the first partial view of this application;

[0019] Figure 2 This is a diagram of the valve closed state for this application;

[0020] Figure 3 This is a schematic diagram of the one-way flow of the valve of this application;

[0021] Figure 4 This is a schematic diagram of the bidirectional flow diversion valve of this application;

[0022] Figure 5 This is a schematic diagram of the three-way diversion valve of this application;

[0023] Figure 6 This is the second partial view of this application;

[0024] Figure 7 This is the third partial view of this application;

[0025] Figure 8 This is a schematic diagram of the overall structure of this application.

[0026] Description of the numbers in the figure:

[0027] 1. Inner sphere; 2. Middle sphere; 3. Outer sphere; 4. Upper valve body; 5. Lower valve body; 6. Through hole; 7. First through hole; 8. Second through hole; 9. First through hole; 10. Second through hole; 11. Third through hole; 12. Fourth through hole; 13. Fifth through hole; 14. Sixth through hole; 15. Seventh through hole; 16. First upper valve stem; 17. First lower valve stem; 18. Second upper valve stem; 19. Second lower valve stem; 20. Inlet pipe; 21. First outlet pipe; 22. Second outlet pipe; 23. Third outlet pipe; 24. Spiral groove; 25. First electric actuator; 26. Second electric actuator. DETAILED DESCRIPTION

[0028] The following describes three implementation methods of the present application in detail with reference to the accompanying drawings.

[0029] The first implementation method:

[0030] Figure 1-8 Shown.

[0031] The through hole opened at the center of the inner sphere 1 is used for fluid to pass through. By controlling the rotation angle of the inner sphere 1, the valve can be opened and closed, and the flow direction control can be completed in cooperation with the middle sphere 2. The first through hole 7 and the second through hole 8 are at an angle of 120 degrees to the through hole 6 and are connected to the through hole 6 for fluid diversion. Seven through holes are opened at the outer end of the middle sphere 2, which are arranged in clockwise order, namely the first through hole 9, the second through hole 10, the third through hole 11, the fourth through hole 12, the fifth through hole 13, the sixth through hole 14, and the seventh through hole 15. The various through hole designs enable the ball valve to adapt to different working conditions. By rotating the middle sphere 2 and switching the through holes, various flow modes such as unidirectional flow, two-way diversion and three-way diversion can be achieved;

[0032] The outer sphere 3 is made of shape memory alloy, has temperature-sensitive properties, and can assist in sealing. The upper valve body 4 and the lower valve body 5 are fixedly connected to the outer sphere 3 to constitute the main structure of the ball valve. The fixed connection ensures the overall stability of the ball valve. The first upper valve stem 16 and the first lower valve stem 17 are fixedly connected to the inner sphere 1 and driven by the first electric actuator 25 to control the rotation of the inner sphere 1. Precise rotation control is achieved through the electric actuator, which improves the operational convenience and automation of the ball valve. The second upper valve stem 18 and the second lower valve stem 19 are fixedly connected to the middle sphere 2 and driven by the second electric actuator 26 to control the rotation of the middle sphere 2, cooperating with the inner sphere 1 to achieve a multi-stage flow mode.

[0033] Second implementation method:

[0034] Figure 1-8 Shown.

[0035] The inlet pipe 20 is used for fluid entry, and the first outlet pipe 21 and the second outlet pipe 22 are fixedly connected to the outer end of the lower valve body 5 for diversion. The outlet pipe design at different positions realizes a multi-way output function to meet the needs of different application scenarios. The inner walls of the through hole 6, the first through hole 7 and the second through hole 8 are all provided with spiral grooves. The spiral groove design enables eddy currents to be generated when the fluid passes through, effectively removing sediments or impurities on the hole walls. The first electric actuator 25 is fixedly connected to the top end of the first upper valve stem 16, and the second electric actuator 26 is fixedly connected to the extra end of the second upper valve stem 18. The electric actuator is used to realize precise rotation control of the inner sphere 1 and the middle sphere 2, thereby improving the convenience and reliability of operation.

[0036] The outer sphere 3 is made of nickel-titanium alloy and has a shape memory effect. A resistance heating element is provided inside the outer sphere 3. By heating the memory alloy, the outer sphere 3 is restored to the memory shape to enhance the sealing effect. The micro conductive slip ring ensures that the outer sphere 3 can still obtain a stable power supply during rotation to achieve heating control. The inner end of the upper valve body 4 is fixedly connected to the position of the through hole 6 with a sealing ring, and the inner end of the lower valve body 5 is fixedly connected to the position of the through hole 6 with the same sealing ring. The sealing ring design in the upper and lower valve bodies ensures the sealing performance when the multi-layer sphere rotates. The sealing ring design at the rotating connection ensures that the sealing effect is not affected during rotation, thereby improving the reliability of the overall seal.

[0037] Third implementation method

[0038] Figure 1-8 Shown.

[0039] The following steps are included:

[0040] S1, multi-flow control;

[0041] During unidirectional flow, the valve is initially in a closed state. When unidirectional flow needs to be controlled, the control system controls the first electric actuator 25 to drive the first upper valve stem 16 to rotate. After the first upper valve stem 16 rotates 30 degrees counterclockwise, the through hole 6 in the inner sphere 1 is connected to the third through hole 11 on the middle sphere 2, and the third through hole 11 is connected to the inlet pipe 20, allowing fluid to enter. At the same time, the bottom of the through hole 6 is connected to the seventh through hole 15 on the middle sphere 2, and the seventh through hole 15 is connected to the second outlet pipe 22, allowing fluid to flow out. Under the action of the middle sphere 2, the first through hole 7 and the second through hole 8 are in a closed state, achieving the purpose of unidirectional control.

[0042] When two-way diversion is required, the inner sphere 1 is kept in a unidirectional flow position, the control system controls the second electric actuator 26 to drive the second upper valve stem 18 to rotate, and the second upper valve stem 18 drives the middle sphere 2 to rotate 30 degrees clockwise, and the fourth through hole 12 on the middle sphere 2 is connected with the through hole 6 on the inner sphere 1. At this time, the through hole 6 and the fourth through hole 12 are both connected with the inlet pipe 20. At the same time, the first through hole 9 on the middle sphere 2 is connected with the first through hole 7 on the inner sphere 1, and the sixth through hole on the middle sphere 2 is connected with the first through hole 7 on the inner sphere 1. 14 is connected to the second through hole 8 on the inner sphere 1. At this time, the first through hole 7 and the sixth through hole 14 are both connected to the first outlet pipe 21, and the second through hole 8 and the first through hole 9 are both connected to the third outlet pipe 23. At this time, the middle sphere 2 closes the bottom of the through hole 6, completing the switching of two-way diversion. The fluid enters through the inlet pipe 20, flows through the fourth through hole 12 into the through hole 6, and then flows into the first through hole 7 and the second through hole 8 respectively, and then flows out from the first outlet pipe 21 and the third outlet pipe 23 through the first through hole 9 and the sixth through hole 14;

[0043] When three-way diversion is required, the inner sphere 1 and the middle sphere 2 are in the two-way diversion position, the inner sphere 1 is kept stationary, and the control system controls the second electric actuator 26 to drive the second upper valve stem 18 to rotate, and the second upper valve stem 18 drives the middle sphere 2 to rotate 150 degrees clockwise. At this time, the first through hole 9 is connected with the through hole 6 and the inlet pipe 20, the first through hole 7 is connected with the sixth through hole 14 and the first outlet pipe 21, the bottom of the through hole 6 is connected with the fifth through hole 13 and the second outlet pipe 22, and the second through hole 8 is connected with the third through hole 11 and the third outlet pipe 23. At this time, the purpose of three-way diversion is achieved and can be switched at will. When it is necessary to close the valve to cut off the fluid, it is only necessary to control the first electric actuator 25 to drive the inner sphere 1 to rotate 30 degrees counterclockwise;

[0044] S2, auxiliary seal;

[0045] When the ball valve is in a high-pressure or high-flow environment, the outer ball 3 is activated to enhance the sealing performance. At this time, the control system energizes the resistance heating element in the outer ball 3 to heat the memory alloy, so that the outer ball 3 returns to its memorized shape, ensuring close contact with the valve seat, enhancing the sealing effect, and preventing liquid leakage. When an emergency occurs, such as a sudden pressure fluctuation or leakage event, the outer ball 3 can be quickly activated to enhance the sealing performance and prevent further losses or accidents.

[0046] S3, self-cleaning;

[0047] A spiral groove 24 is provided on the inner wall of the through hole 6 of the inner sphere 1. When the fluid passes through the through hole 6, the spiral groove 24 will generate a vortex in the fluid. The vortex has a strong stirring ability and a cleaning effect, which can effectively remove the sediment or impurities on the through hole 6, thereby achieving a self-cleaning effect.

[0048] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. Small adjustable directional flow ball valve, characterized by: The invention comprises an inner sphere (1), wherein the outer end of the inner sphere (1) contacts a middle sphere (2), the outer end of the middle sphere (2) contacts an outer sphere (3), the outer end of the outer sphere (3) is fixedly connected to an upper valve body (4) and a lower valve body (5), a through hole (6) is provided at the center of the inner sphere (1), a first through hole (7) and a second through hole (8) are provided inside the inner sphere (1), the first through hole (7) and the second through hole (8) are both at an angle of 120 degrees to the through hole (6), and the first through hole (7) and the second through hole (8) are both connected to the through hole (6), the outer end of the middle sphere (2) is provided with a plurality of The seven through holes are respectively a first through hole (9), a second through hole (10), a third through hole (11), a fourth through hole (12), a fifth through hole (13), a sixth through hole (14), and a seventh through hole (15), wherein the seven through holes are arranged in a clockwise order, an inlet hole and a plurality of outlet holes are provided at the outer end of the outer sphere (3), the outer end of the inner sphere (1) is fixedly connected to a first upper valve stem (16), the outer end of the inner sphere (1) is fixedly connected to a first lower valve stem (17), the outer end of the middle sphere (2) is fixedly connected to a second upper valve stem (18), and the outer end of the middle sphere (2) is fixedly connected to a second lower valve stem (19).

2. The small adjustable directional flow ball valve according to claim 1, characterized in that: The first upper valve stem (16) passes through the middle sphere (2) and the outer sphere (3) and is rotatably connected to the inner end of the second upper valve stem (18); the first lower valve stem (17) passes through the middle sphere (2) and the outer sphere (3) and is rotatably connected to the inner end of the second lower valve stem (19).

3. The small adjustable directional flow ball valve according to claim 1, characterized in that: The second upper valve stem (18) passes through the outer sphere (3) and is rotatably connected to the inner ends of the upper valve body (4) and the lower valve body (5); the second lower valve stem (19) passes through the outer sphere (3) and is rotatably connected to the inner ends of the upper valve body (4) and the lower valve body (5).

4. The small adjustable directional flow ball valve according to claim 1, characterized in that: The top end of the upper valve body (4) is fixedly connected to an inlet pipe (20), the bottom end of the lower valve body (5) is fixedly connected to a first outlet pipe (21), and the outer end of the lower valve body (5) is fixedly connected to a second outlet pipe (22) and a third outlet pipe (23).

5. The small adjustable directional flow ball valve according to claim 2, characterized in that: The inner walls of the through hole (6), the first through hole (7) and the second through hole (8) are all provided with a spiral groove (24); the top end of the first upper valve stem (16) is fixedly connected to a first electric actuator (25); the extra end of the second upper valve stem (18) is fixedly connected to a second electric actuator (26); the first electric actuator (25) and the second electric actuator (26) are both communicatively connected to a control system.

6. The small adjustable directional flow ball valve according to claim 3, characterized in that: The outer sphere (3) is made of nickel-titanium alloy, which has a shape memory effect and can produce a preset deformation when heated by electric current. A resistance heating element is provided inside the outer sphere (3), and the resistance heating element is electrically connected to the second upper valve stem (18) through a micro conductive slip ring.

7. The small adjustable directional flow ball valve according to claim 1, characterized in that: The inner end of the upper valve body (4) is fixedly connected to a position corresponding to the through hole (6) with a sealing ring, the inner end of the lower valve body (5) is fixedly connected to a position corresponding to the through hole (6) with the same sealing ring, and the outer ends of the second upper valve stem (18) and the second lower valve stem (19) are rotatably connected to sealing rings.

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