Ball valve with locking mechanism

Abstract

The invention relates to the field of valves, and discloses a ball valve with a locking mechanism, which comprises a valve body, a valve core positioned in the valve body, a valve rod connected with the valve core and used for driving the valve core to rotate, and a locking seat mounted at the top end of the valve body, a magnetic attraction type locking assembly is installed at the end, close to the valve body, of the locking base and arranged on the valve rod in a sleeving mode, the valve rod is sleeved with the rotating sleeve, the reset spring abuts against the position between the inner top of the rotating sleeve and the top end of the valve rod, and the wedge-shaped ejector rods are installed at the bottom end of the rotating sleeve in the circumferential direction and matched with the magnetic attraction type locking assembly. According to the ball valve with the locking mechanism, on one hand, the magnetic attraction type locking assembly is located between the locking seat and the valve body and is prevented from being exposed, and on the other hand, the ball valve can be locked at any opening degree.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a ball valve with a locking mechanism. Background Art

[0002] In my country, ball valves are widely used in oil refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electricity, municipal administration, steel and other industries, and they play an important role in the national economy. It has a 90-degree rotating action, the plug body is a sphere, and there is a circular through hole or channel passing through its axis. The main purpose of the ball valve in the pipeline is to be used as a switch or cut-off valve. The ball valve currently used can be operated by turning the handle when in use, which is simple to operate. However, in actual use, due to the prominent position of the handle, it is easy to inadvertently hook the handle during daily production, which will move the position of the handle, which will affect the normal operation of the pipeline, reduce or increase the delivery volume of the pipeline, and even open the closed delivery pipeline unknowingly, so that the delivery pipeline starts to work, affecting the normal operation of the factory.

[0003] Chinese patent CN219755513U discloses a handle locking ball valve, including a valve body, a valve core arranged in the valve body, and a handle connected to the valve core. A slot is provided on the outer wall of the valve body corresponding to the position of the handle, and a locking mechanism for locking the rotation of the handle is provided in the slot. The handle of the ball valve is connected to the locking block through a connecting rod of the locking mechanism, so that the handle will also drive the locking block to slide in the slot 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, the handle locking ball valve has the following disadvantages:

[0004] Disadvantage 1: The locking mechanism is exposed outside the ball valve body. If foreign matter enters the slot, 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 open to different degrees according to the actual flow requirements, which makes the use conditions of the ball valve very limited. Summary of the invention

[0006] To achieve the above-mentioned objectives, the present invention discloses a ball valve with a locking mechanism, comprising 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, the valve stem is provided with a rotating handle at the end away from the valve core, and also comprises: a locking seat installed at the top end of the valve body, a magnetic locking assembly is installed on the locking seat near the valve body end, the magnetic locking assembly is sleeved on the valve stem, a rotating sleeve is sleeved on the valve stem, a return spring is arranged between the top of the rotating sleeve and the top end of the valve stem, a plurality of wedge-shaped push rods are circumferentially installed at the bottom end of the rotating sleeve, and are adapted to the arrangement of the magnetic locking assembly.

[0007] Preferably, a central through hole is provided at the center 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 rotating handle is slidably installed in the side opening near the valve stem end.

[0008] Preferably, the magnetic locking assembly comprises:

[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 mounted on the inner ring end of the outer fixed ring seat;

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

[0012] The annular action chamber is located in the inner rotating ring seat. The annular action chamber is open near the top of the inner rotating ring seat and the outer ring end. The magnetic attraction component is installed at the bottom of the annular action chamber. When the wedge-shaped push rod presses the magnetic attraction component, the magnetic attraction component releases the magnetic attraction to the rigid ring.

[0013] Preferably, the magnetic attraction component includes:

[0014] An annular groove seat, which is located in the annular action chamber and close to the top end of the inner rotating ring seat;

[0015] A mounting spring is located in the annular action chamber and is disposed between the bottom of the annular action chamber and the bottom end of the annular groove seat;

[0016] A plurality of driving bevel blocks are circumferentially mounted in an annular groove seat and are adapted to be provided with a wedge-shaped ejector rod;

[0017] A rotating gear ring is fixedly mounted on the inner end of the annular groove seat;

[0018] Magnetic parts, multiple magnetic parts are respectively installed at the bottom of the annular action chamber through the rotating shaft, the rotating gear meshing with the rotating gear ring is installed on the rotating shaft, and the magnetic parts are adapted to the rigid ring setting.

[0019] Preferably, the magnetic part is a cylindrical structure, and the magnetic part is composed of two magnetic blocks and a rubber block arranged in half. When the magnetic block rotates to be close to the rigid ring, the magnetic part is magnetically attracted to the rigid ring. When the rubber block rotates to be close to the rigid ring, the magnetic part is released from the rigid ring.

[0020] Preferably, the top end of the driving bevel block has a driving bevel and a reset bevel arranged opposite to each other, the inclination of the driving bevel is greater than that of the reset bevel, the wedge-shaped push rod is adapted to the driving bevel setting, the reset bevel block is adapted to the reset bevel setting, and the bottom end of the locking seat is provided with an escape chamber connected to the central through hole, and the reset bevel block is installed at the top of the escape chamber.

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

[0022] Preferably, an electromagnet device is embedded in the inner wall of the central through hole near the top, two terminals are mounted opposite to each other on the inner wall of the central through hole near the bottom, two terminals are connected to the electromagnet device through wire one, wire one is buried in the locking seat, a rigid block adapted to the electromagnet device is embedded and mounted on the rotating sleeve, two terminals are mounted opposite to each other on the side end of the rotating sleeve near the bottom, two terminals are connected through wire two, wire two is buried in the rotating sleeve, and when terminal two is moved into 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 limit rod is installed at the top end of the locking seat so that the limit handle can rotate 90 degrees.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) The present invention provides a ball valve with a locking mechanism. When it is necessary to open the ball valve, after holding the rotating handle with one hand, the thumb presses the rotating sleeve, thereby driving the rotating sleeve to move in the contraction direction of the reset spring. The rotating sleeve drives the wedge-shaped push rod installed thereon to trigger the magnetic locking assembly. After the magnetic locking assembly releases the magnetic attraction, the valve stem is unlocked, and the rotating handle and the valve stem connected to the rotating handle can be rotated, thereby driving the valve core connected to the valve stem to work in the valve body. After the pressing of the rotating sleeve is released, the reset spring resets the rotating sleeve to move in the extension direction of the reset spring, and the wedge-shaped push rod stops triggering the magnetic locking assembly. After the magnetic locking assembly resumes the magnetic attraction, the valve stem is locked. In this way, on the one hand, the magnetic locking assembly is located between the locking seat and the valve body to avoid being exposed to the outside, and on the other hand, the ball valve can be locked at any opening.

[0027] (2) The present invention provides a ball valve with a locking mechanism. The rotating sleeve is pressed to drive the rotating sleeve to move in the contraction direction of the reset spring. The rotating sleeve drives the wedge-shaped push rod installed thereon to gradually extend into the annular groove seat. After the wedge-shaped push rod is against the driving inclined surface, the reset inclined surface slides on the reset inclined block. Because the wedge-shaped push rod continues to squeeze the driving inclined surface, the annular groove seat is driven to sink in the annular action chamber in the contraction direction of the installation spring. At the same time, 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, and the rotating gear drives the magnetic member coaxially installed on the rotating shaft to rotate. 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 of the rigid ring, so that the inner rotating ring seat and the outer fixed ring seat are arranged in a split type. In this way, the valve stem can drive the inner rotating ring seat to rotate in the outer fixed ring seat, thereby releasing the lock on the valve stem. Then, the handle and the valve stem connected to the handle are rotated, thereby driving the valve core connected to the valve stem to work in the valve body. After the valve core is adjusted to a suitable opening, the pressing of the rotating sleeve is released. Under the reset of the reset spring, the rotating sleeve moves in the extension direction of the reset spring, and the wedge-shaped push rod stops squeezing the driving inclined surface. Under the extension of the installation spring, the annular groove seat is lifted in the extension direction of the installation spring in the annular action chamber, and the reset inclined surface slides in the opposite direction on the reset inclined block. The annular groove seat rotates in the opposite direction in the annular action chamber, thereby driving the rotating gear ring connected to the annular groove seat to be lifted and rotated in the opposite direction. The rotating gear ring drives the rotating gear meshed with it to rotate in the opposite direction. The rotating gear drives the magnetic part coaxially installed on the rotating shaft to rotate in the opposite direction, and the rubber block of the magnetic part 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 part resumes the magnetic attraction to the rigid ring, so that the inner rotating ring seat and the outer fixed ring seat are set separately 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 implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0030] Figure 2 The structure of the magnetic locking assembly of the present invention is shown in FIG. Figure 1 (Under magnetic state);

[0031] Figure 3 The structure of the magnetic locking assembly of the present invention is shown in FIG. Figure 2 (Under the magnetic state);

[0032] Figure 4 It is the appearance diagram of the annular groove seat of the present invention;

[0033] Figure 5 It is a schematic diagram of the wedge-shaped push rod of the present invention before pressing down;

[0034] Figure 6 It is a schematic diagram of the action of the wedge-shaped push rod of the present invention after being pressed down.

[0035] In the figure: 10. valve body; 11. valve core; 12. valve stem; 13. turning handle; 14. locking seat; 15. magnetic locking assembly; 16. rotating sleeve; 17. reset spring; 18. wedge-shaped push rod; 19. center 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. mounting spring; 27. driving bevel block; 28. rotating gear ring; 29. ​​magnetic part; 30. rotating gear; 31. driving bevel; 32. reset bevel; 33. reset bevel block; 34. avoidance chamber; 35. electromagnet device; 36. terminal one; 37. terminal two; 38. rigid block; 39. sealing ring; 40. limit rod. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example

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

[0039] like Figures 1 to 6 As shown, the present embodiment provides 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, the valve stem 12 is provided with a turning handle 13 at the end away from the valve core 11, and also comprises: a locking seat 14 installed at the top end of the valve body 10, a magnetic locking assembly 15 is installed at the locking seat 14 near the end of the valve body 10, the magnetic locking assembly 15 is sleeved on the valve stem 12, a rotating sleeve 16 is sleeved on the valve stem 12, a reset spring 17 is arranged 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 are circumferentially installed at the bottom end of the rotating sleeve 16, and are adapted to the arrangement of the magnetic locking assembly 15.

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

[0041] The present invention provides a ball valve with a locking mechanism. When it is needed to be opened, after holding the rotating handle 13 with one hand, the thumb presses the rotating sleeve 16, thereby driving the rotating sleeve 16 to move in the contraction direction of the reset spring 17, and the rotating sleeve 16 drives the wedge-shaped push 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 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 the pressing of the rotating sleeve 16 is released, under the reset of the reset spring 17, the rotating sleeve 16 moves in the extension direction of the reset spring 17, and the wedge-shaped push rod 18 stops triggering the magnetic locking assembly 15. After the magnetic locking assembly resumes the magnetic attraction, the valve stem 12 is locked. The present invention discloses a ball valve with a locking mechanism. On the one hand, the magnetic locking assembly 15 is located between the locking seat 14 and the valve body 10 to avoid being exposed to the outside. On the other hand, the ball valve can be locked at any opening.

[0042] In one embodiment, a central through hole 19 is opened at the center of the locking seat 14 to facilitate 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 opened at the side end of the rotating sleeve 16, and the rotating handle 13 is slidably installed in the side opening 20 near the end of the valve stem 12.

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

[0044] The central through hole 19 is provided to facilitate the insertion of the valve stem 12 and the rotating sleeve 16 sleeved on the valve stem 12 , and the side opening 20 is provided to facilitate the extension of the rotating handle 13 .

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

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

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

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

[0049] The annular action chamber 24 is located in the inner rotating ring seat 23. The annular action chamber 24 is open-ended near the top and outer ring end of the inner rotating ring seat 23. The magnetic attraction component is installed at the bottom of the annular action chamber 24. When the wedge-shaped push rod 18 presses the magnetic attraction component, the magnetic attraction component releases the magnetic attraction of the rigid ring 22.

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

[0051] The outer fixed 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. The inner rotating ring seat 23 drives the magnetic attraction component located therein to rotate in the inner ring of the rigid ring 22. The rigid ring 22 is fixedly installed on the inner ring end of the outer fixed ring seat 21. After pressing the rotating sleeve 16, the rotating sleeve 16 is driven to move in the contraction direction of the reset spring 17. The rotating sleeve 16 drives the wedge-shaped push rod 18 installed thereon to trigger the magnetic attraction component. The magnetic attraction component releases the magnetic attraction of the rigid ring 22, so that the inner rotating ring seat 23 and the outer fixed ring seat 21 are separated. In this way, the valve stem 12 can drive the inner rotating ring seat 23 to rotate in the outer fixed ring seat 21, thereby releasing the lock on the valve stem 12. After the pressing of the rotating sleeve 16 is released, the rotating sleeve 16 moves in the extension direction of the reset spring 17 under the reset of the reset spring 17, and the wedge-shaped push rod 18 stops triggering the magnetic attraction component, so that the magnetic attraction component resumes the magnetic attraction of the rigid ring 22, so that the inner rotating ring seat 23 and the outer fixed ring seat 21 are integrated 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.

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

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

[0054] The installation 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;

[0055] A driving bevel block 27, wherein a plurality of driving bevel blocks 27 are circumferentially mounted in the annular groove seat 25 and are adapted to be arranged with the wedge-shaped ejector rod 18;

[0056] The rotating gear ring 28 is fixedly mounted on the inner end of the annular groove seat 25;

[0057] Magnetic parts 29, multiple magnetic parts 29 are respectively installed on the bottom of the annular action chamber 24 through the rotating shaft, and the rotating gear 30 meshing with the rotating gear ring 28 is installed on the rotating shaft. The magnetic parts 29 are adapted to the rigid ring 22.

[0058] Specifically, the magnetic part 29 is a cylindrical structure, and the magnetic part 29 is composed of two half-set magnetic blocks and a rubber block. When the magnetic block rotates to be close to the rigid ring 22, the magnetic part 29 is magnetically attracted to the rigid ring 22. When the rubber block rotates to be close to the rigid ring 22, the magnetic part 29 is released from the rigid ring 22.

[0059] Specifically, the top of the driving bevel block 27 has a driving bevel 31 and a reset bevel 32 arranged in opposite directions. The inclination of the driving bevel 31 is greater than that of the reset bevel 32. The wedge-shaped push rod 18 is adapted to the setting of the driving bevel 31, and the reset bevel block 33 is adapted to the setting of the reset bevel 32. The bottom end of the locking seat 14 is provided with an escape chamber 34 connected to the central through hole 19, and the reset bevel block 33 is installed at the top of the escape chamber 34.

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

[0061] The rotating sleeve 16 is pressed to drive the rotating sleeve 16 to move in the contraction direction of the reset spring 17. The rotating sleeve 16 drives the wedge-shaped push rod 18 installed thereon to gradually extend into the annular groove seat 25. After the wedge-shaped push rod 18 is abutted against the driving inclined surface 31, the reset inclined surface 32 slides on the reset inclined block 33. Because the wedge-shaped push rod 18 continues to squeeze the driving inclined surface 31, the annular groove seat 25 is driven to sink in the annular action chamber 24 in the contraction direction of the installation spring 26. At the same time, the annular groove seat 25 is in the annular action chamber 24. 24 rotates, thereby driving the rotating ring gear 28 connected to the annular groove seat 25 to sink and rotate at the same time, the rotating ring gear 28 drives the rotating gear 30 meshing with it to rotate, and the rotating gear 30 drives the magnetic member 29 coaxially installed on the rotating shaft 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 close to 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 arranged in a split type. In this way, the valve stem 12 can drive the inner rotating ring seat 23 to rotate in the outer fixed ring seat 21, thereby releasing the lock on the valve stem 12. Then, the rotating handle 13 and the valve stem 12 connected to the rotating handle are rotated, thereby driving the valve core 11 connected to the valve stem 12 to work in the valve body 10.

[0062] After the valve core 11 is adjusted to a suitable opening, the pressing of the rotating sleeve 16 is released. Under the reset of the reset spring 17, the rotating sleeve 16 moves in the extension direction of the reset spring 17, and the wedge-shaped push rod 18 stops squeezing the driving inclined surface 31. Under the extension of the mounting spring 26, the annular groove seat 25 is lifted in the extension direction of the mounting spring 26 in the annular action chamber 24, and the reset inclined surface 32 slides in the opposite direction on the reset inclined block 33. The annular groove seat 25 rotates in the opposite direction in the annular action chamber 24, thereby driving the rotating ring gear 28 connected to the annular groove seat 25 to be lifted and rotated in the opposite direction. The rotating ring gear 28 drives the rotating gear 30 meshing therewith to rotate in the opposite direction. The rotating gear 30 drives the magnetic member 29 coaxially mounted on the rotating shaft to rotate in the opposite direction, and the rubber block of the magnetic member 29 rotates to a position away from the rigid ring 22, and the magnetic block 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 again arranged in a split type. In this case, 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 the driving inclined blocks 27 is 8, and the number of the wedge-shaped push rods 18 and the reset inclined blocks 33 is equal to the number of 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, two terminals 36 are installed 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, and the wire 1 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, and two terminals 2 37 are installed on the side ends of the rotating sleeve 16 near the bottom. The two terminals 2 37 are connected through a wire 2, and the wire 2 is buried in the rotating sleeve 16. When the terminal 2 37 moves into the avoidance chamber 34, the electromagnet device 35 loses power.

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

[0066] After pressing the rotating sleeve 16, the rotating sleeve 16 drives the terminal 2 37 to move in the central through hole 19 to the avoidance chamber 34, the connection between the terminal 1 36 and the terminal 2 37 is disconnected, and the electromagnet device 35 loses power. After the pressing of the rotating sleeve 16 is released, under the reset of the reset spring 17, the rotating sleeve 16 moves in the extension direction of the reset spring 17, and the rotating sleeve 16 drives the terminal 2 37 to return to the position of the terminal 1 36 in the central through hole 19, and the electromagnet device 35 is powered on, so as to magnetically attract the rigid block 38 close to it, and then limit 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 set on the valve stem 12, thereby 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:

[0069] The provision 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 is installed at the top of the locking seat 14 to allow the limiting handle 13 to rotate 90 degrees.

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

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

[0073] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled 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 methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the 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) installed on the top end of the valve body (10), a magnetic locking assembly (15) installed on the locking seat (14) near the end of the valve body (10), the magnetic locking assembly (15) is sleeved on the valve stem (12), the rotating sleeve (16) is sleeved on the valve stem (12), a return spring (17) is set between the top of the rotating sleeve (16) and the top end of the valve stem (12), and a plurality of wedge-shaped push rods (18) are circumferentially installed on the bottom end of the rotating sleeve (16) and are adapted to the magnetic locking assembly (15).

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 magnetic locking assembly (15) comprises: an outer fixed ring seat (21) fixedly connected between a locking seat (14) and a 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) is open near the top and the outer ring end of the inner rotating ring seat (23); a magnetic attraction assembly is mounted on the inner bottom of the annular action chamber (24); when a wedge-shaped push rod (18) presses the magnetic attraction assembly, the magnetic attraction assembly releases the magnetic attraction of the rigid ring (22).

4. A ball valve with a locking mechanism according to claim 3, characterized in that: The magnetic attraction assembly comprises: an annular groove seat (25) located in an annular action chamber (24) and close to the top end of an inner rotating ring seat (23); a mounting spring (26) located in the annular action chamber (24) and abutting against the bottom of the annular action chamber (24) and the bottom end of the annular groove seat (25); a plurality of driving inclined blocks (27) circumferentially mounted in the annular groove seat (25) and adapted to be arranged with a wedge-shaped push rod (18); a rotating ring gear (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) through a rotating shaft; a rotating gear (30) meshing with the rotating ring gear (28) is mounted on the rotating shaft; and the magnetic member (29) is adapted to be arranged with a rigid ring (22).

5. A ball valve with a locking mechanism according to claim 4, characterized in that: 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 be close to the rigid ring (22), the magnetic member (29) is magnetically attracted to the rigid ring (22). When the rubber block rotates to be close to the rigid ring (22), the magnetic member (29) is released from being magnetically attracted to the rigid ring (22).

6. A ball valve with a locking mechanism according to claim 4, 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), and 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), and the reset inclined block (33) is installed on the top of the escape chamber (34).

7. A ball valve with a locking mechanism according to claim 6, characterized in that: The number of the driving inclined blocks (27) is 8, and the number of the wedge-shaped push rods (18) and the reset inclined blocks (33) is equal to the number of the driving inclined blocks (27).

8. The ball valve with a locking mechanism according to claim 6, 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 oppositely mounted 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 oppositely mounted 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) moves into the avoidance chamber (34), the electromagnet device (35) loses power.

9. The 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).

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

Images