Magnetic locking ball valve

Abstract

The utility model relates to valve technical field discloses a kind of magnetic locking ball valves, including valve body, valve stem and valve core, valve core is located in valve body, valve body includes the branch pipe in upper end, one end of valve stem is inserted into branch pipe and is connected with valve core, the other end of valve stem is flat shaft and is placed in the outside of branch pipe, further include the magnetic key that can cooperate with flat shaft, magnetic locking assembly is equipped between branch pipe and valve stem, magnetic locking assembly can be switched from locking state to unlocking state under the magnetic repulsion of magnetic key;The upper end of branch pipe is provided with the limiting ring that is fixed with the circumference of branch pipe, the inner circumferential surface of limiting ring is equipped with limiting block, limiting block includes two angle limiting surfaces, flat shaft passes through limiting ring, and the positive and negative rotation of flat shaft can be respectively with two angle limiting surfaces abut. The magnetic locking ball valve, limiting ring is rotated to the valve stem and is positioned, limiting ring as independent component is convenient for processing, and it is easy to install, and limiting ring is not easy to fall off, and it is safe and reliable to use.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a magnetic locking ball valve. Background Technology

[0002] Ball valves are common pipeline valves, primarily used in pipelines to cut off, distribute, and change the flow direction of media. They are widely used in industrial and civil pipelines such as water supply and heating systems. Traditional ball valves can be opened and closed simply by turning a handle, allowing anyone to operate them at will. Therefore, various ball valves with locking functions have emerged on the market, among which magnetic locking ball valves are the most popular. These effectively prevent the ball valve from being opened or closed arbitrarily, facilitating management and providing good anti-theft protection.

[0003] For example, the prior art disclosed in CN215110632U is a magnetic lockable ball valve with opening and closing limit. The valve is opened by the magnetic repulsion between the unlocking handle and the valve stem. In order to prevent the valve stem from excessive rotation when the ball valve is turned from closed to fully open, a limit pin and a limit arc groove are respectively provided between the outer circumferential surface of the valve stem and the inner circumferential surface of the mounting tube. The limit pin is fixedly inserted into the pin hole on the outer circumferential surface of the valve stem, and the limit pin is movably fitted in the limit arc groove. In this way, when the valve stem rotates forward and backward to open and close the valve, it can drive the limit pin to slide back and forth in the limit arc groove, and the stroke of the limit arc groove constitutes the limit of the rotation angle of the valve stem.

[0004] However, this type of magnetic lockable ball valve also has its drawbacks: the ball valve uses a pin for switching, the product installation process is cumbersome, and there is a risk that the pin may fall off during actual use, causing the switch to fail and posing a safety hazard. In addition, during processing, it is necessary to drill pin holes on the valve body and use milling to process an arc-shaped limiting groove on the outside of the installation pipe, which is a complex and cumbersome process that reduces processing efficiency.

[0005] Therefore, there is an urgent need to provide a magnetic locking ball valve to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a magnetic locking ball valve that can limit the rotation of the valve stem through a limiting ring. As an independent component, the limiting ring is easy to process and install, and the limiting ring is not easy to fall off, making it safe and reliable to use.

[0007] This utility model is achieved through the following technical solution:

[0008] A magnetic locking ball valve includes a valve body, a valve stem, and a valve core. The valve core is disposed within the valve body. The valve body includes a branch pipe located at the upper end. One end of the valve stem extends into the branch pipe and is connected to the valve core. The other end of the valve stem is a flat shaft and is located outside the branch pipe. The valve body also includes a magnetic key that can cooperate with the flat shaft. A magnetic locking assembly is provided between the branch pipe and the valve stem. The magnetic locking assembly can switch from a locked state to an unlocked state under the magnetic repulsion of the magnetic key. In the locked state, the magnetic locking assembly simultaneously connects the branch pipe and the valve stem. In the unlocked state, the magnetic locking assembly releases the connection between the branch pipe and the valve stem.

[0009] The upper end of the branch pipe is provided with a limiting ring that is circumferentially fixed to the branch pipe. A limiting block is provided on the inner circumferential surface of the limiting ring. The limiting block includes two limiting surfaces arranged at an included angle. The flat shaft passes through the limiting ring, and the forward and reverse rotation of the flat shaft can abut against the two limiting surfaces respectively.

[0010] As an optional solution, a pressure sleeve is also included, which includes a sleeve portion and a pressing portion. The sleeve portion is fixedly fitted onto the outside of the branch pipe, and the pressing portion is connected to the top end of the sleeve portion and presses against the upper side of the limiting ring.

[0011] As an alternative, one of the magnetic key and the flat shaft is provided with a groove, and the other is provided with a rib that positions and engages with the groove.

[0012] As an alternative, the limiting block is triangular, and the two limiting surfaces of the limiting block are perpendicular to each other.

[0013] As an optional solution, two limiting blocks are symmetrically arranged on the inner circumference of the limiting ring with its center as the center. The two limiting blocks form rotation spaces between two adjacent limiting surfaces along the circumferential direction. The flat shaft can rotate simultaneously along the two rotation spaces until it abuts against the limiting surfaces of the two limiting blocks.

[0014] As an alternative, a slot is provided on the top surface of the branch pipe, and a locking block is provided on the outer circumference of the limiting ring that can be locked into the slot.

[0015] As an optional solution, a first locking hole is formed on the circumferential surface of the valve stem, and a second locking hole is formed on the circumferential surface of the branch pipe. The magnetic locking assembly includes a magnetic pin and a spring. The magnetic pin and the spring are disposed in the first locking hole. The magnetic pin is close to the opening of the first locking hole and can compress the spring. In the locked state, the magnetic pin can be inserted into the second locking hole under the elastic force of the spring. In the unlocked state, the magnetic pin can be retracted into the first locking hole and disengaged from the second locking hole under the magnetic repulsion of the magnetic key.

[0016] As an alternative, the magnetic key includes a mounting sleeve that can be fitted over the branch pipe and a magnet disposed around the periphery of the mounting sleeve, the magnet being magnetically repelled by the magnetic force of the magnetic pin.

[0017] As an alternative, the mounting sleeve has mounting holes on its outer circumferential surface, and the magnet is fixed in the mounting holes.

[0018] As an optional solution, two magnetic locking assemblies are symmetrically arranged around the axis of the valve stem, and two magnets are symmetrically arranged around the axis of the mounting sleeve, with each magnet corresponding to one of the magnetic locking assemblies.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model provides a magnetic locking ball valve, which can realize a magnetic locking function, making the locking control safer, and achieving the purpose of cutting off the water supply in case of malicious non-payment and preventing theft of liquid media. When the valve stem rotates, the forward and reverse rotation of the flat shaft will contact the two limiting surfaces of the limiting block respectively, thereby limiting the rotation angle of the valve stem and reducing the difficulty of operation. The limiting ring precisely limits the rotation of the valve stem. Compared with the prior art of directly machining the limiting arc groove on the valve body and directly machining the pin hole on the valve stem and installing the limiting pin that matches the limiting arc groove in the pin hole, the limiting ring, as an independent component, is machined separately. The machining accuracy is better controlled, the machining process is simpler, and the installation and replacement are convenient. Even if it is damaged, there is no need to scrap the entire valve body and valve stem. Moreover, the limiting ring is not easy to fall off, making it safe and reliable to use. Attached Figure Description

[0021] To more clearly and understandably illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the structure of the magnetic locking ball valve provided in this embodiment of the utility model;

[0023] Figure 2 This is a cross-sectional view of the magnetic locking ball valve provided in the embodiment of this utility model in the unlocked state;

[0024] Figure 3 This is a schematic diagram of the structure of the limiting ring provided in this embodiment of the utility model;

[0025] Figure 4 This is a first schematic diagram of the fit between the limiting ring and the flat shaft provided in this embodiment of the utility model;

[0026] Figure 5 This is a second schematic diagram showing the matching of the limiting ring and the flat shaft provided in this embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the valve body provided in an embodiment of the present utility model;

[0028] Figure 7 This is a cross-sectional view of the magnetic locking ball valve provided in the embodiment of this utility model in the locked state;

[0029] Figure 8 This is a schematic diagram of the structure of the magnetic key provided in this embodiment of the utility model.

[0030] In the picture:

[0031] 1. Valve body; 11. Branch pipe; 111. Slot; 112. Second locking hole; 12. Main pipe; 121. Flow passage; 2. Valve stem; 21. Flat shaft; 211. Groove; 22. First locking hole; 3. Valve core; 31. Through hole; 4. Magnetic key; 41. Rib; 42. Mounting sleeve; 421. Mounting hole; 43. Magnet; 5. Magnetic locking assembly; 51. Magnetic pin; 52. Spring; 6. Limiting ring; 61. Limiting block; 611. Limiting surface; 62. Rotation space; 63. Locking block; 7. Pressure sleeve; 71. Sleeve part; 72. Pressing part; 8. Valve cover; 9. Valve seat. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] like Figure 1 and Figure 2As shown, this embodiment provides a magnetic locking ball valve, including a valve body 1, a valve stem 2, and a valve core 3. The valve core 3 is disposed within the valve body 1. The valve body 1 includes a horizontally arranged main pipe 12 and a branch pipe 11 connected to the upper end of the main pipe 12. The main pipe 12 has a flow channel 121 extending axially within it. The valve core 3 is spherical and disposed within the main pipe 12. The valve core 3 has a through hole 31 for connecting to the flow channel 121. One end of the valve stem 2 extends into the branch pipe 11 and is connected to the valve core 3. The other end of the valve stem 2 is a flat shaft 21 and is located outside the branch pipe 11. By rotating the valve stem 2, the valve core 3 can be rotated, thereby switching the magnetic locking ball valve between an open state and a closed state. Specifically, when the magnetic locking ball valve is in the open state, the center of the through hole 31 of the valve core 3 and the center of the flow channel 121 are completely aligned to allow fluid to flow. By rotating the valve stem 2, the valve core 3 is rotated, which can adjust the overlapping area of ​​the through hole 31 and the flow channel 121, thereby adjusting the flow rate. When the through hole 31 is perpendicular to the axis of the flow channel 121, the fluid can be blocked, thus closing the magnetic locking ball valve.

[0037] like Figure 2 As shown, the magnetic locking ball valve also includes two valve seats 9 and a valve cover 8. The two valve seats 9 are disposed inside the main pipe 12 and respectively abut against both sides of the valve core 3, thereby achieving the limiting installation of the valve core 3 and ensuring a certain sealing effect. The valve cover 8 is connected to one end of the main pipe 12, thereby achieving the limiting installation of the two valve seats 9.

[0038] refer to Figure 1 and Figure 2 The magnetic locking valve also includes a magnetic key 4, which can be fitted onto the branch pipe 11 and can cooperate with the flat shaft 21. A magnetic locking assembly 5 is provided between the branch pipe 11 and the valve stem 2. The magnetic locking assembly 5 can switch from the locked state to the unlocked state under the magnetic repulsion of the magnetic key 4. In the locked state, the magnetic locking assembly 5 connects the branch pipe 11 and the valve stem 2 at the same time. In the unlocked state, the magnetic locking assembly 5 releases the connection between the branch pipe 11 and the valve stem 2.

[0039] When the magnetic locking ball valve is opened, the magnetic locking assembly 5 is in the unlocked state. At this time, there is no connection between the branch pipe 11 and the valve stem 2, and the valve stem 2 can rotate relative to the branch pipe 11. When it is necessary to switch to the locked state, the magnetic key 4 is fitted outside the branch pipe 11 and cooperates with the flat shaft 21. The unlocking key is used to drive the valve stem 2 to rotate 90 degrees, so that the valve core 3 is closed. At this time, the magnetic locking assembly 5 connects the branch pipe 11 and the valve stem 2. That is, the branch pipe 11 and the valve stem 2 form a rotation restriction connection through the magnetic locking assembly 5 to realize the magnetic locking function. Without the professional magnetic key 4, the valve stem 2 cannot rotate and the valve core 3 cannot be opened. The locking control is more secure, so as to achieve the purpose of cutting off the water supply in case of malicious overdue payment and preventing theft of liquid media. When it is necessary to switch to the unlocked state, the magnetic key 4 is fitted outside the branch pipe 11 and cooperates with the flat shaft 21. Under the magnetic repulsion of the magnetic key 4, the magnetic locking assembly 5 switches from the locked state to the unlocked state. At this time, the magnetic locking assembly 5 releases the rotation restriction connection between the branch pipe 11 and the valve stem 2, and the valve stem 2 can rotate relative to the branch pipe 11 again. By rotating the magnetic key 4, the valve stem 2 is driven to rotate 90 degrees in the opposite direction, so that the valve core 3 switches to the open state again, and the magnetic locking ball valve can be used normally.

[0040] It is worth noting that in the prior art, a locking cover is usually installed at the upper end of the branch pipe 11. The locking cover is circumferentially fixed to the valve stem 2, and a magnetic locking assembly 5 is installed between the locking cover and the branch pipe 11. The magnetic locking assembly 5 is switched from the locked state to the unlocked state by the cooperation of the magnetic key 4 with the locking cover. Rotating the magnetic key 4 can drive the locking cover to rotate, and the locking cover can then drive the valve stem 2 to rotate. However, in this embodiment, the magnetic locking assembly 5 is directly installed between the branch pipe 11 and the valve stem 2, and the magnetic key 4 drives the valve stem 2 to rotate by directly cooperating with the flat shaft 21 of the valve stem 2. The locking cover is eliminated, the structure of the magnetic locking ball valve is simplified, the processing cost is reduced, and the overall volume and space occupation of the ball valve are reduced.

[0041] In this embodiment, as Figure 2 and Figure 3 As shown, a limiting ring 6 is provided at the upper end of the branch pipe 11 and is circumferentially fixed to the branch pipe 11. A limiting block 61 is provided on the inner circumferential surface of the limiting ring 6. The limiting block 61 includes two limiting surfaces 611 set at an included angle. The flat shaft 21 passes through the limiting ring 6, and the forward and reverse rotation of the flat shaft 21 can abut against the two limiting surfaces 611 respectively. The limiting block 61 is integrally formed on the inner circumferential surface of the limiting ring 6, and the rotation axis of the flat shaft 21 also overlaps with the center line of the limiting ring 6. Therefore, the rotation stroke of the flat shaft 21 will be limited by the limiting block 61. Specifically, the forward and reverse rotation of the flat shaft 21 will contact the two limiting surfaces 611 of the limiting block 61 respectively, thereby limiting the rotation angle of the valve stem 2 and reducing the difficulty of operation.

[0042] Therefore, the magnetic locking ball valve provided in this embodiment precisely limits the rotation of the valve stem 2 through the limiting ring 6. Compared with the prior art, which directly machines the limiting arc groove on the valve body 1 and directly machines the pin hole on the valve stem 2 and installs the limiting pin that cooperates with the limiting arc groove in the pin hole, the limiting ring 6, as an independent component, is machined separately. The machining accuracy is better controlled, the machining process is simpler, and it is convenient to install and replace. Even if it is damaged, there is no need to scrap the entire valve body 1 and valve stem 2. Moreover, the limiting ring 6 is not easy to fall off, making it safe and reliable to use.

[0043] Specifically, the limiting block 61 is triangular, and the two limiting surfaces 611 of the limiting block 61 are perpendicular to each other. This forms a 90° forward and reverse rotation limit for the valve stem 2, corresponding to the rotation angle of the valve core 3 from fully closing the ball valve to fully opening the ball valve, thus achieving precise and reliable opening and closing limit of the entire ball valve.

[0044] Optionally, such as Figures 3 to 5 As shown, two limiting blocks 61 are symmetrically arranged on the inner circumference of the limiting ring 6 with its center as the center. Two adjacent limiting surfaces 611 of the two limiting blocks 61 form rotational spaces 62. The flat shaft 21 can rotate simultaneously along the two rotational spaces 62 until it abuts against the limiting surfaces 611 of the two limiting blocks 61. The flat shaft 21 has a straight-line structure, and the two opposing limiting surfaces 611 of the two limiting blocks 61 are parallel to each other. The distance between the two parallel limiting surfaces 611 is the width of the flat shaft 21. When the valve core 3 is fully open or fully closed, the two sides of the flat shaft 21 can abut against the two parallel limiting surfaces 611 of the two limiting blocks 61, thereby ensuring the accuracy of the 90° limit switch of the magnetic locking ball valve. Figure 4 This represents the engagement state of the flat shaft 21 and the two limit blocks 61 when the valve core 3 is fully open. Figure 5 This refers to the engagement state of the flat shaft 21 and the two limit blocks 61 when the valve core 3 is fully closed.

[0045] Optionally, such as Figure 3 and Figure 6 As shown, a groove 111 is formed on the top surface of the branch pipe 11, and a locking block 63 is provided on the outer circumference of the limiting ring 6, which can be locked into the groove 111. By locking the locking block 63 into the groove 111, the limiting ring 6 is circumferentially fixed to the branch pipe 11, so that the limiting ring 6 can be positioned at the top of the branch pipe 11. This allows the limiting ring 6 to remain stationary when the valve stem 2 rotates and cooperate with the flat shaft 21 to form a precise limit on the rotation angle of the valve stem 2, and it is also convenient to install and replace.

[0046] In one optional embodiment, two locking blocks 63 are symmetrically arranged on the outer circumference of the limiting ring 6, and two locking slots 111 are symmetrically arranged at the top end of the branch pipe 11. The two locking blocks 63 are positioned and fitted into the two locking slots 111 respectively, so that the limiting ring 6 can be firmly positioned at the top end of the branch pipe 11. In other optional embodiments, the locking blocks 63 and locking slots 111 can also be set to three, four or more, which can be flexibly set according to actual needs, and no specific limitation is made here.

[0047] Optionally, such as Figure 2 As shown, the magnetic locking ball valve also includes a pressure sleeve 7, which includes a sleeve portion 71 and a pressing portion 72. The sleeve portion 71 is fixedly fitted onto the outside of the branch pipe 11, specifically, it can be threaded onto the outside of the branch pipe 11. The pressing portion 72 is connected to the top end of the sleeve portion 71 and presses against the upper side of the limiting ring 6. By the pressing portion 72 abutting against the limiting ring 6, the limiting ring 6 can be axially limited and fixed, preventing the limiting ring 6 from moving upward and disengaging from the branch pipe 11 when the pipeline vibrates.

[0048] In one optional embodiment, reference is made to Figure 2 , Figure 6 and Figure 7 A first locking hole 22 is provided on the circumferential surface of the valve stem 2, and a second locking hole 112 is provided on the circumferential surface of the branch pipe 11. The magnetic locking assembly 5 includes a magnetic pin 51 and a spring 52. The magnetic pin 51 itself is a magnetic block. The magnetic pin 51 and the spring 52 are located in the first locking hole 22. The magnetic pin 51 is close to the opening of the first locking hole 22 and can compress the spring 52. In the locked state, the magnetic pin 51 can be inserted into the second locking hole 112 under the elastic force of the spring 52. In the unlocked state, the magnetic pin 51 can be retracted into the first locking hole 22 and disengaged from the second locking hole 112 under the magnetic repulsion of the magnetic key 4.

[0049] Under normal conditions, the magnetic pin 51 is always inclined to move outward due to the push of the spring 52, such as... Figure 7 As shown, when the magnetic locking ball valve is closed, the first locking hole 22 on the valve stem 2 is aligned with the second locking hole 112 on the branch pipe 11. The magnetic pin 51 is pushed outward by the spring 52 and is locked between the first locking hole 22 and the second locking hole 112. At this time, the branch pipe 11 and the valve stem 2 form a rotation restriction connection through the magnetic pin 51, and the rotation of the valve stem 2 will be locked, realizing the magnetic locking function. Without a professional magnetic key 4, the valve stem 2 cannot be rotated and the valve core 3 cannot be opened. The locking control is more secure, so as to achieve the purpose of cutting off the water supply in case of malicious overdue payment and preventing theft of liquid media.

[0050] like Figure 2As shown, when it is necessary to switch to the unlocked state, the magnetic key 4 is fitted outside the branch pipe 11 and cooperates with the flat shaft 21. Under the magnetic repulsion of the magnetic key 4, the magnetic pin 51 overcomes the elastic force of the spring 52 and retracts into the first lock hole 22, and disengages from the second lock hole 112, thereby unlocking the branch pipe 11 and the valve stem 2. At this time, the valve stem 2 can rotate relative to the branch pipe 11. By rotating the magnetic key 4, the valve stem 2 is rotated 90 degrees, so that the valve core 3 is switched to the open state, and the magnetic locking ball valve can be used normally.

[0051] Optionally, such as Figure 1 and Figure 2 As shown, the magnetic key 4 includes a mounting sleeve 42 that can be fitted onto the branch pipe 11 and a magnet 43 disposed around the mounting sleeve 42. The magnet 43 and the magnetic pin 51 are magnetically repelled. Therefore, when the mounting sleeve 42 is fitted onto the branch pipe 11, the magnet 43 and the magnetic pin 51 are positioned accordingly. The magnet 43 will use the repulsive magnetic force to push the magnetic pin 51 inward and retract into the first locking hole 22 and disengage from the second locking hole 112. At this time, simply turning the magnetic key 4 will drive the valve stem 2 to rotate.

[0052] Optionally, such as Figure 2 As shown, a mounting hole 421 is provided on the outer circumferential surface of the mounting sleeve 42, and the magnet 43 is fixed in the mounting hole 421. Optionally, the magnet 43 can be fixed in the mounting hole 421 by adhesive, or the magnet 43 can be sealed in the mounting hole 421 by a protective cover, thereby achieving stable installation of the magnet 43.

[0053] In an optional embodiment, such as Figure 1 and Figure 8 As shown, the flat shaft 21 has a groove 211, and the mounting sleeve 42 of the magnetic key 4 has a rib 41 that positions and engages with the groove 211. When the mounting sleeve 42 is fitted onto the branch pipe 11, the mounting sleeve 42 engages with the groove 211 on the flat shaft 21 through the rib 41, thereby transmitting torque and enabling the valve stem 2 to rotate synchronously with the magnetic key 4.

[0054] In this embodiment, the rib 41 is a straight rib and the groove 211 is a slot. The cooperation between the straight rib and the slot not only enables the valve stem 2 and the magnetic key 4 to rotate synchronously, but also plays a positioning role, so that after the straight rib and the slot are in cooperation, the magnet 43 can be directly opposite the magnetic pin 51 for unlocking.

[0055] Optionally, in this embodiment, combined with Figure 2 and Figure 7Two magnetic locking components 5 are symmetrically arranged around the axis of the valve stem 2, and two magnets 43 are symmetrically arranged around the axis of the mounting sleeve 42. The magnets 43 and the magnetic locking components 5 are arranged in a one-to-one correspondence. Specifically, two symmetrically arranged first locking holes 22 are provided on the circumferential surface of the valve stem 2. Each first locking hole 22 is provided with a spring 52 and a magnetic pin 51. Two symmetrically arranged second locking holes 112 are provided on the circumferential surface of the branch pipe 11. Each magnetic pin 51 can be pushed into the corresponding second locking hole 112 under the elastic force of the spring 52, thereby ensuring a stable and reliable magnetic locking effect. The two magnets 43 are exactly aligned with the two magnetic pins 51, thereby generating the maximum magnetic repulsion force.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A magnetic locking ball valve, comprising a valve body (1), a valve stem (2), and a valve core (3), wherein the valve core (3) is disposed within the valve body (1), the valve body (1) includes a branch pipe (11) located at the upper end, one end of the valve stem (2) extends into the branch pipe (11) and is connected to the valve core (3), and the other end of the valve stem (2) is a flat shaft (21) and is located outside the branch pipe (11), characterized in that, It also includes a magnetic key (4) that can cooperate with the flat shaft (21), and a magnetic locking assembly (5) is provided between the branch pipe (11) and the valve stem (2). The magnetic locking assembly (5) can switch from a locked state to an unlocked state under the magnetic repulsion of the magnetic key (4). In the locked state, the magnetic locking assembly (5) connects the branch pipe (11) and the valve stem (2) at the same time. In the unlocked state, the magnetic locking assembly (5) releases the connection between the branch pipe (11) and the valve stem (2). The upper end of the branch pipe (11) is provided with a limiting ring (6) that is circumferentially fixed to the branch pipe (11). The inner circumferential surface of the limiting ring (6) is provided with a limiting block (61). The limiting block (61) includes two limiting surfaces (611) arranged at an angle. The flat shaft (21) passes through the limiting ring (6). The forward and reverse rotation of the flat shaft (21) can abut against the two limiting surfaces (611) respectively.

2. The magnetic locking ball valve according to claim 1, characterized in that, It also includes a pressure sleeve (7), which includes a sleeve portion (71) and a pressing portion (72). The sleeve portion (71) is fixedly fitted onto the outside of the branch pipe (11), and the pressing portion (72) is connected to the top of the sleeve portion (71) and presses against the upper side of the limiting ring (6).

3. The magnetic locking ball valve according to claim 1, characterized in that, The magnetic key (4) and the flat shaft (21) are provided with a groove (211) in one of them, and the other of them is provided with a rib (41) that is positioned and engaged with the groove (211).

4. The magnetic locking ball valve according to claim 1, characterized in that, The limiting block (61) is triangular, and the two limiting surfaces (611) of the limiting block (61) are perpendicular to each other.

5. The magnetic locking ball valve according to claim 4, characterized in that, Two limiting blocks (61) are symmetrically arranged on the inner circumference of the limiting ring (6) with its center as the center. The two limiting blocks (61) form rotation spaces (62) between the two adjacent limiting surfaces (611) along the circumferential direction. The flat shaft (21) can rotate simultaneously along the two rotation spaces (62) to abut against the limiting surfaces (611) of the two limiting blocks (61).

6. The magnetic locking ball valve according to claim 1, characterized in that, The top surface of the branch pipe (11) has a slot (111), and the outer circumference of the limiting ring (6) is provided with a locking block (63) that can be locked into the slot (111).

7. The magnetic locking ball valve according to claim 1, characterized in that, The valve stem (2) has a first locking hole (22) on its circumferential surface, and the branch pipe (11) has a second locking hole (112) on its circumferential surface. The magnetic locking assembly (5) includes a magnetic pin (51) and a spring (52). The magnetic pin (51) and the spring (52) are located in the first locking hole (22). The magnetic pin (51) is close to the opening of the first locking hole (22) and can compress the spring (52). In the locked state, the magnetic pin (51) can be inserted into the second locking hole (112) under the elastic force of the spring (52). In the unlocked state, the magnetic pin (51) can be retracted into the first locking hole (22) and disengaged from the second locking hole (112) under the magnetic repulsion of the magnetic key (4).

8. The magnetic locking ball valve according to claim 7, characterized in that, The magnetic key (4) includes a mounting sleeve (42) that can be fitted onto the branch pipe (11) and a magnet (43) disposed around the mounting sleeve (42), the magnet (43) being magnetically repelled by the magnetic force of the magnetic pin (51).

9. The magnetic locking ball valve according to claim 8, characterized in that, The mounting sleeve (42) has a mounting hole (421) on its outer circumference, and the magnet (43) is fixed in the mounting hole (421).

10. The magnetic locking ball valve according to claim 8, characterized in that, Two magnetic locking components (5) are symmetrically arranged with the axis of the valve stem (2) as the center, and two magnets (43) are symmetrically arranged with the axis of the mounting sleeve (42) as the center. The magnets (43) and the magnetic locking components (5) are arranged in a one-to-one correspondence.

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