A ball valve with a locking mechanism

Abstract

The present invention relates to the field of valves. The present invention discloses a ball valve with a locking mechanism, which includes a valve body, a valve core located therein, and a valve stem connected to the valve core and used to drive the valve core to rotate. A turning handle is installed at the end of the valve stem away from the valve core. The ball valve with a locking mechanism further includes: a locking seat installed at the top end of the valve body, a magnetic locking component installed at the end of the locking seat close to the valve body, the magnetic locking component is sleeved on the valve stem, a rotating sleeve is sleeved on the valve stem, a return spring is abutted between the inner top of the rotating sleeve and the top end of the valve stem, and a plurality of wedge-shaped ejector rods are circumferentially installed at the bottom end of the rotating sleeve and are arranged to be adapted to the magnetic locking component. For the ball valve with a locking mechanism disclosed by the present invention, on the one hand, the magnetic locking component is located between the locking seat and the valve body and is not exposed outside. On the other hand, the ball valve can be locked at any opening degree.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and more specifically, to a ball valve with a locking mechanism. Background Art

[0002] In China, ball valves are widely used in industries such as petroleum refining, long-distance pipelines, chemical engineering, papermaking, pharmaceuticals, water conservancy, electric power, municipal engineering, and steel. They play a crucial role in the national economy. It has a 90-degree rotation action, the plug body is a sphere, and there is a circular through-hole or channel passing through its axis. The main use of the ball valve in the pipeline is as a switch or cut-off valve. Currently, the ball valve in use can be operated by turning the handle, and the operation is simple. However, in the actual operation process, since the handle position is relatively prominent, it is very easy to accidentally hook the handle during the daily production process, which will move the position of the handle, thus affecting the normal operation of the pipeline, reducing or increasing the pipeline transportation volume, and even opening the closed transportation pipeline unconsciously, causing the transportation pipeline to start working and affecting the normal operation of the factory.

[0003] Chinese Patent CN219755513U discloses a handle-locking type ball valve, which includes a valve body, a valve core arranged inside the valve body, and a handle connected to the valve core. A clamping groove is provided on the outer side wall of the valve body corresponding to the position of the handle, and a locking mechanism for locking the rotation of the handle is arranged in the clamping groove. The handle of the ball valve is connected to the locking block through the connecting rod of the locking mechanism, so that the handle will drive the locking block to slide in the clamping groove during the movement, effectively preventing the handle of the ball valve from being accidentally hooked and driven to rotate, affecting the normal operation of the ball valve. However, this handle-locking type ball valve has the following disadvantages:

[0004] Disadvantage 1: The locking mechanism is exposed outside the ball valve body. If foreign objects enter the clamping groove, the overall opening and closing of the ball valve will be affected;

[0005] Disadvantage 2: The locking mechanism is only useful when the ball valve is fully opened or closed. In the actual production process, the ball valve will be opened at different opening degrees according to the actual flow requirements, which limits the use conditions of the ball valve. Summary of the Invention

[0006] To achieve the above object, the present invention discloses a ball valve with a locking mechanism, which includes a valve body, a valve core located inside it, and a valve stem connected to the valve core and used to drive the valve core to rotate. A rotating handle is installed at the end of the valve stem away from the valve core. The ball valve further includes: a locking seat installed at the top of the valve body, a magnetic locking component installed near the valve body end of the locking seat, the magnetic locking component is sleeved on the valve stem, a rotating sleeve is sleeved on the valve stem, a return spring is arranged between the inner top of the rotating sleeve and the top end of the valve stem, and a plurality of wedge-shaped ejector rods are circumferentially installed at the bottom end of the rotating sleeve and are arranged to be adapted to the magnetic locking component.

[0007] Preferably, a central through-hole is provided at the central position of the locking seat for the bottom end of the rotating sleeve to pass through. The rotating sleeve is rotatably installed in the central through-hole. A side opening is provided at the side end of the rotating sleeve, and the handle is slidably installed in the side opening near the valve rod end.

[0008] Preferably, the magnetic locking component includes:

[0009] An outer fixed ring seat, which is fixedly connected between the locking seat and the valve body;

[0010] A rigid ring, which is fixedly installed at the inner ring end of the outer fixed ring seat;

[0011] An inner rotating ring seat, which is sleeved on the valve rod and rotatably installed at the inner ring end of the outer fixed ring seat;

[0012] An annular action chamber, which is located inside the inner rotating ring seat. The top and outer ring ends of the annular action chamber near the inner rotating ring seat are open. The magnetic attraction component is installed at the bottom of the annular action chamber. When the wedge-shaped ejector rod presses the magnetic attraction component, the magnetic attraction of the magnetic attraction component to the rigid ring is released.

[0013] Preferably, the magnetic attraction component includes:

[0014] An annular groove seat, which is located inside the annular action chamber and near the top of the inner rotating ring seat;

[0015] A mounting spring, which is located inside the annular action chamber and abuts between the bottom of the annular action chamber and the bottom end of the annular groove seat;

[0016] A driving inclined block, a plurality of driving inclined blocks are circumferentially installed in the annular groove seat and are arranged to fit the wedge-shaped ejector rod;

[0017] A rotating gear ring, which is fixedly installed at the inner end of the annular groove seat;

[0018] A magnetic member, a plurality of magnetic members are respectively installed at the bottom of the annular action chamber through a rotating shaft. A rotating gear meshing with the rotating gear ring is installed on the rotating shaft, and the magnetic member is arranged to fit the rigid ring.

[0019] Preferably, the magnetic member is of a cylindrical structure and is composed of two half-set magnetic blocks and rubber blocks spliced together. When the magnetic block rotates to abut against the rigid ring, the magnetic member is magnetically attracted to the rigid ring. When the rubber block rotates to abut against the rigid ring, the magnetic attraction of the magnetic member to the rigid ring is released.

[0020] Preferably, the top end of the driving inclined block has driving inclined surfaces and reset inclined surfaces arranged oppositely. The slope of the driving inclined surface is greater than that of the reset inclined surface. The wedge-shaped ejector rod is arranged to fit the driving inclined surface, and the reset inclined block is arranged to fit the reset inclined surface. An avoidance chamber communicating with the central through-hole is provided at the bottom end of the locking seat, and the reset inclined block is installed at the top of the avoidance chamber.

[0021] Preferably, the number of driving cam blocks is 8, and the number of wedge-shaped ejector rods and reset cam blocks is equal to that of the driving cam blocks.

[0022] Preferably, an electromagnet device is embedded in the inner wall of the central through hole near the top position. Two terminals one are oppositely installed on the inner wall of the central through hole near the bottom position. Two terminals one are connected to the electromagnet device through a first wire. The first wire is buried in the locking seat. A rigid block adapted to the electromagnet device is embedded and installed on the rotating sleeve. Two terminals two are oppositely installed on the side end of the rotating sleeve near the bottom end position. Two terminals two are connected through a second wire. The second wire is buried in the rotating sleeve. When the terminal two moves to the avoidance chamber, the electromagnet device loses power.

[0023] Preferably, a sealing ring is installed at the bottom end of the inner rotating ring seat.

[0024] Preferably, a limiting rod for 90° rotation is installed at the top end of the locking seat to limit the rotation of the limiting turning handle.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] (1) For a ball valve with a locking mechanism provided by the present invention, when it needs to be opened, after holding the turning handle with one hand, press the rotating sleeve with the thumb, so as to drive the rotating sleeve to move in the contracting direction of the return spring. The rotating sleeve drives the wedge-shaped ejector rod installed thereon to trigger the magnetic adsorption type locking component. After the magnetic adsorption type locking component releases the magnetic adsorption, the valve stem is unlocked, and then the turning handle and the valve stem connected to the turning handle can be rotated, thereby driving the valve core connected to the valve stem to work in the valve body. After releasing the pressing of the rotating sleeve, under the reset of the return spring, the rotating sleeve moves in the extending direction of the return spring, the wedge-shaped ejector rod stops triggering the magnetic adsorption type locking component, and after the magnetic adsorption type locking component resumes magnetic adsorption, the valve stem is locked. In this way, on the one hand, the magnetic adsorption type locking component is located between the locking seat and the valve body and is not exposed outside. On the other hand, the ball valve can be locked at any opening degree.

[0027] (2) The ball valve with a locking mechanism provided by the present invention. Press the rotating sleeve, driving the rotating sleeve to move in the direction of the contraction of the return spring. The rotating sleeve drives the wedge-shaped ejector rod installed thereon to gradually extend into the annular groove seat. After the wedge-shaped ejector rod abuts against the driving inclined surface, the reset inclined surface slides on the reset inclined block. And because the wedge-shaped ejector rod continues to press the driving inclined surface, while driving the annular groove seat to sink in the annular action chamber in the direction of the contraction of the installation spring, the annular groove seat rotates in the annular action chamber, thereby driving the rotating gear ring connected to the annular groove seat to sink and rotate at the same time. The rotating gear ring drives the rotating gear meshing with it to rotate. The rotating gear drives the magnetic member coaxially installed on the rotating shaft with it to rotate. And the magnetic block of the magnetic member rotates to a position away from the rigid ring, and the rubber block rotates to a position close to the rigid ring. At this time, the magnetic member releases the magnetic attraction to the rigid ring, so that the inner rotating ring seat and the outer fixed ring seat are arranged in a split manner. In this way, the valve stem can drive the inner rotating ring seat to rotate in the outer fixed ring seat, thereby releasing the locking of the valve stem. Then rotate the handle and the valve stem connected to the handle, and further drive the valve core connected to the valve stem to work in the valve body. After the valve core is adjusted to the appropriate opening degree, release the pressing of the rotating sleeve. Under the reset of the return spring, the rotating sleeve moves in the direction of the extension of the return spring. The wedge-shaped ejector rod stops pressing the driving inclined surface. Under the extension of the installation spring, the annular groove seat rises in the annular action chamber in the direction of the extension of the installation spring. The reset inclined surface slides reversely on the reset inclined block. The annular groove seat rotates reversely in the annular action chamber, thereby driving the rotating gear ring connected to the annular groove seat to rise and rotate reversely at the same time. The rotating gear ring drives the rotating gear meshing with it to rotate reversely. The rotating gear drives the magnetic member coaxially installed on the rotating shaft with it to rotate reversely. And the rubber block of the magnetic member rotates to a position away from the rigid ring, and the magnetic block rotates to a position close to the rigid ring. At this time, the magnetic member restores the magnetic attraction to the rigid ring, so that the inner rotating ring seat and the outer fixed ring seat are arranged in a split manner again. In this way, the valve stem cannot drive the inner rotating ring seat to rotate in the outer fixed ring seat, thereby completing the locking of the valve stem. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 is a cross-sectional view of the present invention;

[0030] Figure 2 is a schematic structural view of the magnetic attraction type locking component of the present invention Figure 1 (in the magnetic attraction state);

[0031] Figure 3 Structural Schematic of the Magnetic Absorption Locking Assembly of the Present Invention Figure 2 (in the state of releasing magnetic absorption);

[0032] Figure 4 External Shape Diagram of the Annular Groove Seat of the Present Invention;

[0033] Figure 5 Schematic Diagram of the Action of the Wedge-shaped Ejector Rod before Pressing Down of the Present Invention;

[0034] Figure 6 Schematic Diagram of the Action of the Wedge-shaped Ejector Rod after Pressing Down of the Present Invention.

[0035] In the figure: 10. Valve body; 11. Valve core; 12. Valve rod; 13. Rotating handle; 14. Locking seat; 15. Magnetic absorption locking assembly; 16. Rotating sleeve; 17. Return spring; 18. Wedge-shaped ejector rod; 19. Central through hole; 20. Side opening; 21. Outer fixed ring seat; 22. Rigid ring; 23. Inner rotating ring seat; 24. Annular action chamber; 25. Annular groove seat; 26. Installation spring; 27. Driving inclined block; 28. Rotating gear ring; 29. Magnetic part; 30. Rotating gear; 31. Driving inclined plane; 32. Return inclined plane; 33. Return inclined block; 34. Avoidance chamber; 35. Electromagnet device; 36. Terminal 1; 37. Terminal 2; 38. Rigid block; 39. Sealing ring; 40. Limit rod. Specific Embodiment

[0036] Next, the technical solution of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment

[0038] Next, the present invention will be further described in conjunction with the accompanying drawings.

[0039] As Figures 1 to 6 shown, a ball valve with a locking mechanism provided in this embodiment includes a valve body 10, a valve core 11 located therein, and a valve rod 12 connected to the valve core 11 and used to drive the valve core 11 to rotate. A rotating handle 13 is installed at the end of the valve rod 12 away from the valve core 11. It further includes: a locking seat 14 installed at the top end of the valve body 10, a magnetic absorption locking assembly 15 installed near the end of the locking seat 14 close to the valve body 10. The magnetic absorption locking assembly 15 is sleeved on the valve rod 12, a rotating sleeve 16 is sleeved on the valve rod 12, a return spring 17 is abutted between the inner top of the rotating sleeve 16 and the top end of the valve rod 12, and a plurality of wedge-shaped ejector rods 18 are circumferentially installed at the bottom end of the rotating sleeve 16 and are arranged to be adapted to the magnetic absorption locking assembly 15.

[0040] The working principle and beneficial effects of the above technical solution are as follows:

[0041] A ball valve with a locking mechanism provided by the present invention, when it needs to be opened, after holding the rotating handle 13 with one hand, press the rotating sleeve 16 with the thumb, so as to drive the rotating sleeve 16 to move in the contraction direction of the return spring 17. The rotating sleeve 16 drives the wedge-shaped ejector rod 18 installed thereon to trigger the magnetic locking assembly 15. After the magnetic locking assembly 15 releases the magnetic attraction, the valve stem 12 is unlocked, and then the rotating handle 13 and the valve stem 12 connected to the rotating handle can be rotated, thereby driving the valve core 11 connected to the valve stem 12 to work in the valve body 10. After releasing the pressing of the rotating sleeve 16, under the reset of the return spring 17, the rotating sleeve 16 moves in the extension direction of the return spring 17, the wedge-shaped ejector rod 18 stops triggering the magnetic locking assembly 15, and after the magnetic locking assembly resumes magnetic attraction, the valve stem 12 is locked. A ball valve with a locking mechanism disclosed by the present invention, on the one hand, the magnetic locking assembly 15 is located between the locking seat 14 and the valve body 10, avoiding being exposed outside, and on the other hand, the ball valve can be locked at any opening degree.

[0042] In one embodiment, a central through hole 19 for the bottom end of the rotating sleeve 16 to pass through is provided at the central position of the locking seat 14. The rotating sleeve 16 is rotatably installed in the central through hole 19. A side opening 20 is provided at the side end of the rotating sleeve 16, and the end of the rotating handle 13 close to the valve stem 12 is slidably installed in the side opening 20.

[0043] The beneficial effects of the above technical solution are as follows:

[0044] The setting of the central through hole 19 facilitates the passing of the valve stem 12 and the rotating sleeve 16 sleeved on the valve stem 12. The setting of the side opening 20 facilitates the extension of the rotating handle 13.

[0045] In one embodiment, the magnetic locking assembly 15 includes:

[0046] An outer fixed ring seat 21, which is fixedly connected between the locking seat 14 and the valve body 10;

[0047] A rigid ring 22, which is fixedly installed at the inner ring end of the outer fixed ring seat 21;

[0048] An inner rotating ring seat 23, which is sleeved on the valve stem 12 and is rotatably installed at the inner ring end of the outer fixed ring seat 21;

[0049] An annular action chamber 24, which is located in the inner rotating ring seat 23. The annular action chamber 24 is open at the top and outer ring end close to the inner rotating ring seat 23. The magnetic attraction assembly is installed at the inner bottom of the annular action chamber 24. When the wedge-shaped ejector rod 18 presses the magnetic attraction assembly, the magnetic attraction assembly releases the magnetic attraction on the rigid ring 22.

[0050] The working principle and beneficial effects of the above technical solution are as follows:

[0051] The outer fixing ring seat 21 is integrally formed and connected between the locking seat 14 and the valve body 10. The inner rotating ring seat 23 is sleeved on the valve stem 12 and rotates synchronously with the valve stem 12 when the valve stem 12 rotates. Thus, the inner rotating ring seat 23 drives the magnetic attraction assembly located therein to rotate within the inner ring of the rigid ring 22. The rigid ring 22 is fixedly installed at the inner ring end of the outer fixing ring seat 21. After pressing the rotating sleeve 16, the rotating sleeve 16 is driven to act in the contracting direction of the return spring 17. The rotating sleeve 16 drives the wedge-shaped ejector rod 18 installed thereon to trigger the magnetic attraction assembly, and the magnetic attraction of the magnetic attraction assembly to the rigid ring 22 is released. Thus, the inner rotating ring seat 23 and the outer fixing ring seat 21 are arranged in a split manner. In this way, the valve stem 12 can drive the inner rotating ring seat 23 to rotate within the outer fixing ring seat 21, thereby releasing the locking of the valve stem 12. After releasing the pressing of the rotating sleeve 16, under the reset of the return spring 17, the rotating sleeve 16 acts in the extending direction of the return spring 17, and the wedge-shaped ejector rod 18 stops triggering the magnetic attraction assembly. In this way, the magnetic attraction assembly resumes the magnetic attraction to the rigid ring 22, so that the inner rotating ring seat 23 and the outer fixing ring seat 21 are arranged in an integral manner again. In this way, the valve stem 12 cannot drive the inner rotating ring seat 23 to rotate within the outer fixing ring seat 21, thereby completing the locking of the valve stem 12.

[0052] In one embodiment, the magnetic attraction assembly includes:

[0053] An annular groove seat 25, which is located in the annular action chamber 24 and is close to the top end of the inner rotating ring seat 23;

[0054] A mounting spring 26, which is located in the annular action chamber 24 and is abutted between the inner bottom of the annular action chamber 24 and the bottom end of the annular groove seat 25;

[0055] Driving inclined blocks 27, which are circumferentially installed in the annular groove seat 25 and are arranged to be adapted to the wedge-shaped ejector rod 18;

[0056] A rotating gear ring 28, which is fixedly installed at the inner end of the annular groove seat 25;

[0057] Magnetic members 29, which are respectively installed on the inner bottom of the annular action chamber 24 through rotating shafts. A rotating gear 30 meshing with the rotating gear ring 28 is installed on the rotating shaft, and the magnetic members 29 are arranged to be adapted to the rigid ring 22.

[0058] Specifically, the magnetic member 29 is of a cylindrical structure. The magnetic member 29 is composed of two half - set magnetic blocks and rubber blocks spliced together. When the magnetic block rotates to abut against the rigid ring 22, the magnetic member 29 is magnetically attracted to the rigid ring 22. When the rubber block rotates to abut against the rigid ring 22, the magnetic member 29 is released from being magnetically attracted to the rigid ring 22.

[0059] Specifically, the top end of the driving inclined block 27 is provided with driving inclined surfaces 31 and a reset inclined surface 32 arranged oppositely. The slope of the driving inclined surface 31 is greater than that of the reset inclined surface 32. The wedge - shaped ejector rod 18 is arranged to fit the driving inclined surface 31, and the reset inclined block 33 is arranged to fit the reset inclined surface 32. A relief chamber 34 communicating with the central through - hole 19 is opened at the bottom end of the locking seat 14, and the reset inclined block 33 is installed at the top inside the relief chamber 34.

[0060] The working principle and beneficial effects of the above - mentioned technical solution are as follows:

[0061] Press the rotating sleeve 16, driving the rotating sleeve 16 to move in the contracting direction of the return spring 17. The rotating sleeve 16 drives the wedge - shaped ejector rod 18 installed thereon to gradually extend into the annular groove seat 25. After the wedge - shaped ejector rod 18 abuts against the driving inclined surface 31, the reset inclined surface 32 slides on the reset inclined block 33. And because the wedge - shaped ejector rod 18 continues to press the driving inclined surface 31, while driving the annular groove seat 25 to sink in the annular action chamber 24 in the contracting direction of the mounting spring 26, the annular groove seat 25 rotates in the annular action chamber 24. Furthermore, it drives the rotating gear ring 28 connected to the annular groove seat 25 to sink and rotate at the same time. The rotating gear ring 28 drives the rotating gear 30 meshing with it to rotate. The rotating gear 30 drives the magnetic member 29 coaxially installed on the rotating shaft with it to rotate. And the magnetic block of the magnetic member 29 rotates to a position away from the rigid ring 22, and the rubber block rotates to a position abutting against the rigid ring 22. At this time, the magnetic member 29 releases the magnetic attraction to the rigid ring 22, so that the inner rotating ring seat 23 and the outer fixed ring seat 21 are in a split - type setting. In this way, the valve stem 12 can drive the inner rotating ring seat 23 to rotate inside the outer fixed ring seat 21, thereby releasing the locking of the valve stem 12. Then rotate the turning handle 13 and the valve stem 12 connected to the turning handle, and further drive the valve core 11 connected to the valve stem 12 to work inside the valve body 10.

[0062] After the valve core 11 is adjusted to an appropriate opening degree, the pressing of the rotating sleeve 16 is released. Under the reset of the return spring 17, the rotating sleeve 16 moves in the extending direction of the return spring 17. The wedge-shaped ejector rod 18 stops pressing the driving inclined surface 31. Under the extension of the mounting spring 26, the annular groove seat 25 lifts in the annular action chamber 24 in the extending direction of the mounting spring 26. The reset inclined surface 32 slides reversely on the reset inclined block 33, and the annular groove seat 25 rotates reversely in the annular action chamber 24, thereby driving the rotating gear ring 28 connected to the annular groove seat 25 to lift and rotate reversely at the same time. The rotating gear ring 28 drives the rotating gear 30 meshing with it to rotate reversely. The rotating gear 30 drives the magnetic member 29 coaxially mounted on the rotating shaft with it to rotate reversely. The rubber block of the magnetic member 29 rotates to a position away from the rigid ring 22, and the magnet rotates to a position close to the rigid ring 22. At this time, the magnetic member 29 resumes the magnetic attraction to the rigid ring 22, so that the inner rotating ring seat 23 and the outer fixed ring seat 21 are separated again. In this way, the valve stem 12 cannot drive the inner rotating ring seat 23 to rotate in the outer fixed ring seat 21, thereby completing the locking of the valve stem 12.

[0063] In one embodiment, the number of driving inclined blocks 27 is 8, and the wedge-shaped ejector rods 18 and the reset inclined blocks 33 are equal in number to the driving inclined blocks 27.

[0064] In one embodiment, an electromagnet device 35 is embedded in the inner wall of the central through hole 19 near the top position. Two terminals one 36 are oppositely installed on the inner wall of the central through hole 19 near the bottom position. The two terminals one 36 are connected to the electromagnet device 35 through a wire one. The wire one is buried in the locking seat 14. A rigid block 38 adapted to the electromagnet device 35 is embedded and installed on the rotating sleeve 16. Two terminals two 37 are oppositely installed on the side end of the rotating sleeve 16 near the bottom end position. The two terminals two 37 are connected through a wire two. The wire two is buried in the rotating sleeve 16. When the terminal two 37 is displaced into the avoidance chamber 34, the electromagnet device 35 loses power.

[0065] The working principle and beneficial effects of the above technical solution are as follows:

[0066] After pressing the rotating sleeve 16, the rotating sleeve 16 drives the terminal two 37 to be displaced into the avoidance chamber 34 in the central through hole 19, and the connection between the terminal one 36 and the terminal two 37 is released, and the electromagnet device 35 loses power. After releasing the pressing of the rotating sleeve 16, under the reset of the return spring 17, the rotating sleeve 16 moves in the extending direction of the return spring 17. The rotating sleeve 16 drives the terminal two 37 to return to the position of the terminal one 36 in the central through hole 19, and the electromagnet device 35 is powered on to work, thereby magnetically attracting the rigid block 38 close to it, and further limiting the rotating sleeve 16 located in the central through hole 19. In this way, the magnetic locking assembly 15 locks the valve stem 12, and the electromagnet device 35 locks the rotating sleeve 16 sleeved on the valve stem 12, improving the locking effect.

[0067] In one embodiment, a sealing ring 39 is installed at the bottom end of the inner rotating ring seat 23.

[0068] The beneficial effects of the above technical solution are as follows:

[0069] The setting of the sealing ring 39 improves the sealing performance between the outer fixed ring seat 21 and the valve body 10.

[0070] In one embodiment, a limiting rod 40 for 90° rotation of the limiting turning handle 13 is installed at the top end of the locking seat 14.

[0071] The beneficial effects of the above technical solution are as follows:

[0072] The setting of the limiting rod 40 limits the rotation angle of the turning handle 13.

[0073] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A ball valve with a locking mechanism, comprising a valve body (10), a valve core (11) located therein, and a valve stem (12) connected to the valve core (11) and used to drive the valve core (11) to rotate, wherein a rotating handle (13) is installed at the end of the valve stem (12) away from the valve core (11), characterized in that: It also includes: a locking seat (14) mounted on the top end of the valve body (10), a magnetic locking assembly (15) mounted on the locking seat (14) near the end of the valve body (10), the magnetic locking assembly (15) sleeved on the valve stem (12), a rotating sleeve (16) sleeved on the valve stem (12), a return spring (17) abutting between the top of the rotating sleeve (16) and the top end of the valve stem (12), a plurality of wedge-shaped push rods (18) circumferentially mounted on the bottom end of the rotating sleeve (16) and adapted to be arranged with the magnetic locking assembly (15); The magnetic locking assembly (15) comprises: an outer fixed ring seat (21) fixedly connected between the locking seat (14) and the valve body (10), a rigid ring (22) fixedly mounted on the inner ring end of the outer fixed ring seat (21), an inner rotating ring seat (23) sleeved on the valve stem (12), the inner rotating ring seat (23) rotatably mounted on the inner ring end of the outer fixed ring seat (21), an annular action chamber (24) located in the inner rotating ring seat (23), the annular action chamber (24) being open near the top of the inner rotating ring seat (23), a magnetic attraction assembly mounted on the inner bottom of the annular action chamber (24), and when the wedge-shaped push rod (18) presses the magnetic attraction assembly, the magnetic attraction assembly releases the magnetic attraction of the rigid ring (22); The magnetic attraction assembly comprises: an annular groove seat (25) located in an annular action chamber (24), a plurality of driving inclined blocks (27) circumferentially mounted in the annular groove seat (25) and adapted to be arranged with a wedge-shaped ejector rod (18), a rotating gear ring (28) fixedly mounted on the inner end of the annular groove seat (25), a plurality of magnetic members (29) respectively mounted on the bottom of the annular action chamber (24) via a rotating shaft, a rotating gear (30) meshing with the rotating gear ring (28) mounted on the rotating shaft, and the magnetic member (29) adapted to be arranged with a rigid ring (22); The magnetic member (29) is a cylindrical structure. The magnetic member (29) is composed of two magnetic blocks and a rubber block that are arranged in half. When the magnetic block rotates to abut against the rigid ring (22), the magnetic member (29) is magnetically attracted to the rigid ring (22). When the rubber block rotates to abut against the rigid ring (22), the magnetic member (29) is released from the rigid ring (22).

2. A ball valve with a locking mechanism according to claim 1, characterized in that: A central through hole (19) is provided at the center of the locking seat (14) for the bottom end of the rotating sleeve (16) to pass through. The rotating sleeve (16) is rotatably installed in the central through hole (19). A side opening (20) is provided at the side end of the rotating sleeve (16). The rotating handle (13) is slidably installed in the side opening (20) near the end of the valve stem (12).

3. A ball valve with a locking mechanism according to claim 1, characterized in that: The annular groove seat (25) is close to the top end of the inner rotating ring seat (23). The mounting spring (26) is located in the annular action chamber (24) and is disposed between the bottom of the annular action chamber (24) and the bottom end of the annular groove seat (25).

4. A ball valve with a locking mechanism according to claim 3, characterized in that: The top end of the driving inclined block (27) is provided with a driving inclined surface (31) and a reset inclined surface (32) which are arranged opposite to each other. The inclination of the driving inclined surface (31) is greater than that of the reset inclined surface (32). The wedge-shaped push rod (18) is adapted to be arranged on the driving inclined surface (31). The reset inclined block (33) is adapted to be arranged on the reset inclined surface (32). The bottom end of the locking seat (14) is provided with an escape chamber (34) which is connected to the central through hole (19). The reset inclined block (33) is installed on the top of the escape chamber (34).

5. A ball valve with a locking mechanism according to claim 4, characterized in that: The number of the driving inclined blocks (27) is 8, and the number of the wedge-shaped ejector rods (18) and the reset inclined blocks (33) is equal to the number of the driving inclined blocks (27).

6. A ball valve with a locking mechanism according to claim 4, characterized in that: An electromagnet device (35) is embedded in the inner wall of the central through hole (19) near the top, two terminals (36) are mounted opposite to each other on the inner wall of the central through hole (19) near the bottom, the two terminals (36) are connected to the electromagnet device (35) through a wire (1), the wire (1) is buried in the locking seat (14), a rigid block (38) adapted to the electromagnet device (35) is embedded and mounted on the rotating sleeve (16), two terminals (37) are mounted opposite to each other on the side ends of the rotating sleeve (16) near the bottom, the two terminals (37) are connected through a wire (2), the wire (2) is buried in the rotating sleeve (16), and when the terminal (37) is displaced into the avoidance chamber (34), the electromagnet device (35) loses power.

7. A ball valve with a locking mechanism according to claim 1, characterized in that: A sealing ring (39) is installed at the bottom end of the inner rotating ring seat (23).

8. The ball valve with a locking mechanism according to claim 1, characterized in that: A limit rod (40) is installed at the top end of the locking seat (14) so ​​that the limit handle (13) can rotate 90 degrees.

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