Magnetic locking valve

Abstract

The utility model relates to the technical field of valves, and discloses a magnetic locking valve. The magnetic locking valve comprises a valve body, a valve cover, a valve rod assembly, a rotary cover assembly and a plug pin, a flow channel is formed in the valve body, the valve cover is installed on the valve body, the valve rod assembly comprises a valve rod and a valve element, one end of the valve rod rotatably penetrates through the valve cover, the other end of the valve rod is connected with the valve element, and the valve rod rotates to enable the valve element to open and close the flow channel. The rotating cover assembly comprises a rotating cover rotationally arranged on the valve cover in a sleeving mode, the valve rod is covered with the rotating cover, and the rotating cover assembly can be selectively fixed to the valve rod in the circumferential direction so that the rotating cover can drive the valve rod to rotate synchronously when rotating. An insertion hole is formed in the side wall of the rotary cover, and an annular groove is formed in the side wall of the valve cover; one end of the bolt penetrates through the insertion hole, and the other end of the bolt is in sliding fit with the annular groove. According to the magnetic locking valve, the rotating cover can be prevented from shaking, it can be guaranteed that the rotating cover can rotate normally in the working process, and therefore the structural stability and the use performance of the magnetic locking valve are guaranteed.

Description

Technical Field

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

[0002] A locking valve is a type of valve that uses a special key to manually cut off or connect the flow of media in a pipeline. It can be widely used in various pipelines for liquid control and can prevent theft of liquid media and cut off the water supply when payment is overdue.

[0003] Most existing locking valves on the market use magnetic locking valves, which rely on magnetic force to control the valve's locking and unlocking. In related technologies, magnetic locking valves typically include a valve body, a valve cover, and a valve stem assembly. The valve body has a flow channel, the valve cover is mounted on the valve body, and the valve stem assembly includes a valve stem and a valve core. One end of the valve stem passes through the valve cover; the other end is connected to the valve core. Rotation of the valve stem causes the valve core to open and close the flow channel on the valve body. To enable the magnetic locking valve to switch between locked and unlocked states, it also includes a rotating cover and a pressure cap. The rotating cover is rotatably fitted onto the valve cover and can move axially under external force to be circumferentially fixed to the top of the valve stem. The pressure cap is located outside the valve cover and rotating cover, with one end threaded to the valve cover and the other end axially limiting the rotating cover. A pre-existing gap is provided between the rotating cover, the pressure cap, and the valve cover to allow the rotating cover to rotate relative to the valve cover.

[0004] However, the above-mentioned setup often has the following problems: the amount of clearance between the rotating cover, the pressure cover, and the valve cover is difficult to control. When the clearance is large, the rotating cover will wobble, affecting the structural stability of the magnetic locking valve. When the clearance is small, the rotating cover may not be able to rotate, thus affecting the performance of the magnetic locking valve.

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

[0006] The purpose of this invention is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this invention is to provide a magnetic locking valve that prevents the rotating cover from shaking and ensures its normal rotation during operation, thereby ensuring the structural stability and performance of the magnetic locking valve.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A magnetic locking valve includes a valve body, a valve cover, and a valve stem assembly. The valve body has a flow channel. The valve cover is mounted on the valve body. The valve stem assembly includes a valve stem and a valve core. One end of the valve stem rotatably passes through the valve cover, and the other end of the valve stem is connected to the valve core. Rotation of the valve stem causes the valve core to open and close the flow channel. The magnetic locking valve further includes:

[0009] A rotating cover assembly includes a rotating cover rotatably fitted onto the valve cover, the rotating cover covering the valve stem, and the rotating cover assembly being selectively circumferentially fixed to the top of the valve stem so that the valve stem rotates synchronously when the rotating cover rotates; the side wall of the rotating cover is provided with an insertion hole, and the side wall of the valve cover is provided with an annular groove corresponding to the insertion hole;

[0010] A pin, one end of which passes through the insertion hole, and the other end of which is slidably fitted in the annular groove.

[0011] As a preferred embodiment of the magnetic locking valve provided by this utility model, the pin is fixedly connected to the insertion hole.

[0012] As a preferred embodiment of the magnetic locking valve provided by this utility model, the pin is interference-fitted into the insertion hole.

[0013] As a preferred embodiment of the magnetic locking valve provided by this utility model, the outward-facing opening of the insertion hole is flared.

[0014] As a preferred embodiment of the magnetic locking valve provided by this utility model, the number of the insertion holes is at least two, each insertion hole is arranged at intervals along the circumference of the rotating cover, and each insertion hole is provided with a pin.

[0015] As a preferred embodiment of the magnetic locking valve provided by this utility model, the rotating cover assembly further includes:

[0016] A magnetic slider is slidably disposed inside the rotating cover and can rotate synchronously with the rotating cover. The magnetic slider can move towards the valve stem under the action of external magnetic force and is circumferentially fixed with the valve stem.

[0017] A reset spring, the two ends of which abut against the magnetic slider and the valve stem, respectively.

[0018] As a preferred embodiment of the magnetic locking valve provided by this utility model, the magnetic slider includes a slider body and a first magnetic element embedded in the slider body. The rotating cover has an inner square hole, and the slider body is slidably fitted in the inner square hole. The end of the slider body facing the valve stem has a plug hole, and the top of the valve stem has a plug end that can be plugged into the plug hole.

[0019] As a preferred embodiment of the magnetic locking valve provided by this utility model, the cross-sectional shape of the insertion hole is non-circular.

[0020] As a preferred embodiment of the magnetic locking valve provided by this utility model, the magnetic locking valve further includes a magnetic key that can be adapted to the rotating cover, and the magnetic key can provide external magnetic force to the magnetic slider.

[0021] As a preferred embodiment of the magnetic locking valve provided by this utility model, the rotating cover includes a flange section and a straight pipe section connected sequentially along the axial direction, and the insertion hole is opened in the straight pipe section and is close to the port of the straight pipe section.

[0022] The beneficial effects of this utility model are as follows:

[0023] The magnetic locking valve provided by this utility model, by setting a pin, can limit the rotation of the cover, ensuring the stability of the cover when rotating relative to the valve cover and preventing the cover from detaching from the valve cover during rotation. Furthermore, compared to the pressure cap in the prior art, the pin simplifies the structure of the magnetic locking valve by eliminating the need for threading on the outer wall of the valve cover, simplifying the manufacturing process, reducing material and processing costs, and is lighter than the pressure cap, thus reducing the overall weight of the magnetic locking valve and making it more portable. On the other hand, it avoids situations where the cover cannot rotate due to an overly tight pressure cap or where the cover wobbles due to an overly loose pressure cap. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the magnetic locking valve provided in Embodiment 1 of this utility model;

[0026] Figure 2 This is a cross-sectional schematic diagram of the magnetic locking valve provided in Embodiment 1 of this utility model;

[0027] Figure 3 This is a schematic diagram of the valve stem assembly provided in Embodiment 1 of this utility model;

[0028] Figure 4 This is a schematic diagram of the second limiting structure provided in Embodiment 1 of this utility model;

[0029] Figure 5 This is a schematic diagram of the rotating cover provided in Embodiment 1 of this utility model;

[0030] Figure 6 This is a schematic diagram of the first structure of the slider body provided in Embodiment 1 of this utility model;

[0031] Figure 7 This is a schematic diagram of the second structure of the slider body provided in Embodiment 1 of this utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the magnetic key provided in Embodiment 1 of this utility model;

[0033] Figure 9 This is a cross-sectional schematic diagram of the rotating cover provided in Embodiment 1 of this utility model;

[0034] Figure 10 This is a cross-sectional schematic diagram of the valve cover provided in Embodiment 1 of this utility model;

[0035] Figure 11 This is a cross-sectional schematic diagram of the magnetic locking valve provided in Embodiment 2 of this utility model;

[0036] Figure 12 This is a schematic diagram of the rotating cover provided in Embodiment 2 of this utility model.

[0037] Figure label:

[0038] 10. Valve body; 101. Flow channel;

[0039] 20. Valve cover; 201. Annular groove; 202. Through hole; 2021. Stepped surface;

[0040] 30. Valve stem assembly; 31. Valve stem; 311. First limiting structure; 312. Second limiting structure; 313. Snap-fit ​​groove; 314. Insertion end; 32. Valve core;

[0041] 40. Rotating cover assembly; 41. Rotating cover; 4101. Lever section; 4102. Straight tube section; 4103. Intermediate section; 411. Insertion hole; 412. Inner square hole; 42. Magnetic slider; 4201. Insertion hole; 421. Slider body; 4211. Weight reduction groove; 4212. Receiving groove; 422. First magnetic component; 423. Guide boss; 43. Return spring;

[0042] 50. Bolt;

[0043] 60. Magnetic key; 61. Key body; 611. Insertion slot; 612. Mounting slot; 62. Second magnetic component;

[0044] 701. First seal; 702. Second seal; 703. Third seal. Detailed Implementation

[0045] Before explaining any embodiment of the present invention in detail, it should be understood that the present invention is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0046] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0047] In this invention, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "and / or" relationship.

[0048] In this invention, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0049] In this invention, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0050] In this invention, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can be performed by one part, one component, or a combination of multiple parts.

[0051] In this utility model, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this utility model. Furthermore, in the context, it should be understood that when one element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent the direct orientation but can also be understood as the lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0052] This invention provides a magnetic locking valve, which is used in various pipelines to cut off or connect the flow of media in the pipeline, thereby preventing theft of liquid media and cutting off water supply in case of unpaid bills. The magnetic locking valve can be a gate valve, ball valve, or other valve with locking function, and is not specifically limited here. The specific structure and working principle of the magnetic locking valve provided by this invention are described in detail below through several embodiments.

[0053] Example 1

[0054] Figure 1 A schematic diagram of the magnetic locking valve provided in this embodiment is shown. Figure 2 A cross-sectional schematic diagram of the magnetic locking valve provided in this embodiment is shown. Figures 1-2As shown, the magnetic locking valve provided in this embodiment includes a valve body 10, a valve cover 20, and a valve stem assembly 30. A flow channel 101 is provided inside the valve body 10. Both ends of the flow channel 101 are used to connect to external pipelines so that the liquid medium in the external pipeline can flow through the flow channel 101. The valve cover 20 is installed on the valve body 10. The valve stem assembly 30 includes a valve stem 31 and a valve core 32. One end of the valve stem 31 is rotatably inserted through the valve cover 20, and the other end of the valve stem 31 is connected to the valve core 32. The valve core 32 is located inside the flow channel 101. By rotating the valve stem 31 around the axis in different directions, the valve core 32 can be lowered or raised, thereby cutting off or connecting the flow channel 101, realizing the interception or flow of the liquid medium, and thus realizing the closing or opening of the magnetic locking valve.

[0055] In this embodiment, the valve stem 31 is threaded to the valve core 32. By rotating the valve stem 31, the valve core 32 can be moved along the axial direction of the valve stem 31. The valve stem assembly 30 has a simple structure, is easy to manufacture, and is easy to adjust.

[0056] In this embodiment, the valve cover 20 is threaded onto the valve body 10 and communicates with the flow channel 101 of the valve body 10. The threaded connection has the advantages of convenient assembly and disassembly and a tight connection. To prevent the liquid medium in the flow channel 101 from leaking from the gap between the valve body 10 and the valve cover 20, a first sealing element 701 is also provided between the valve body 10 and the valve cover 20. The first sealing element 701 can be a sealing ring.

[0057] Figure 3 A schematic diagram of the valve stem assembly 30 provided in this embodiment is shown. Figure 3 and combined Figure 2 As shown, a through hole 202 is provided inside the valve cover 20, extending axially along the valve cover 20. The through hole 202 is a stepped hole, with its larger diameter section facing the valve body 10. The end of the valve stem 31 facing away from the valve core 32 is rotatably mounted in the smaller diameter section of the through hole 202. A first limiting structure 311 is provided on the valve stem 31, which abuts against the stepped surface 2021 formed between the larger and smaller diameter sections of the through hole 202, thereby limiting the upward movement of the valve stem assembly 30. In this embodiment, the first limiting structure 311 is a limiting protrusion protruding circumferentially from the valve stem 31.

[0058] Figure 4 A schematic diagram of the second limiting structure 312 provided in this embodiment is shown. Figure 4 and combined Figure 2 , Figure 3As shown, a second limiting structure 312 is also provided on the valve stem 31. The second limiting structure 312 is located above the first limiting structure 311. The second limiting structure 312 can abut against the end face of the valve cover 20 on the side opposite to the valve body 10, so as to limit the downward movement of the valve stem assembly 30. Through the cooperation of the first limiting structure 311 and the second limiting structure 312, the axial movement of the valve stem 31 can be limited, preventing it from dislodging from the valve cover 20 when opening and closing the flow channel 101.

[0059] In this embodiment, the second limiting structure 312 is a retaining ring with an opening, and the second limiting structure 312 is snapped onto the valve stem 31. By setting the second limiting structure 312 as a retaining ring, the assembly of the valve stem 31 and the valve cover 20 can be facilitated, thereby improving assembly efficiency.

[0060] Optionally, the valve stem 31 is provided with a snap-fit ​​groove 313, and the second limiting structure 312 snaps into the snap-fit ​​groove 313. During installation, the operator can simply align the opening of the second limiting structure 312 with the snap-fit ​​groove 313 and insert it to achieve assembly. The assembly process is convenient and quick.

[0061] like Figure 2 As shown, a second sealing element 702 is also provided between the valve stem 31 and the through hole 202 to ensure the sealing between the two and prevent the liquid medium in the flow channel 101 from leaking from the gap between the valve stem 31 and the through hole 202.

[0062] To enable the magnetic locking valve to switch between locked and unlocked states, it further includes a rotating cover assembly 40. The rotating cover assembly 40 includes a rotating cover 41 rotatably fitted onto the valve cover 20, which covers the valve stem 31. The rotating cover assembly 40 can be selectively circumferentially fixed to the top of the valve stem 31, so that rotating the rotating cover 41 drives the valve stem 31 to rotate synchronously. In other words, when it is necessary to adjust the flow rate of the liquid medium in the flow channel 101, the rotating cover assembly 40 can be circumferentially fixed to the top of the valve stem 31, so that rotating the rotating cover 41 drives the valve stem 31 to rotate, thereby opening and closing the flow channel 101 with the valve core 32. After adjustment, the rotating cover assembly 40 can be disengaged from the valve stem 31 to ensure the safety of the magnetic locking valve.

[0063] Specifically, the rotating cover assembly 40 also includes a magnetic slider 42 and a return spring 43. The magnetic slider 42 is slidably disposed inside the rotating cover 41 and can rotate synchronously with the rotating cover 41. The magnetic slider 42 can move towards the valve stem 31 under the action of external magnetic force and is circumferentially fixed with the valve stem 31. The two ends of the return spring 43 abut against the magnetic slider 42 and the valve stem 31 respectively. When the magnetic locking valve needs to be switched to the unlocked state, an external magnetic repulsive force is applied. Under the action of the magnetic repulsive force, the magnetic slider 42 can overcome the elastic force of the return spring 43 and move towards the valve stem 31, and is circumferentially fixed with the valve stem 31. At this time, the rotating cover 41 forms a rotation restriction connection with the valve stem 31 through the magnetic slider 42. The rotating cover 41 is connected to the valve stem 31 through the magnetic slider 42, and the three can rotate synchronously, thereby controlling the opening or closing of the magnetic locking valve. When the magnetic locking valve needs to be switched from the unlocked state to the locked state, the external magnetic force can be canceled. The magnetic slider 42 can be reset under the elastic action of the return spring 43 to disengage from the valve stem 31. When the rotating cover 41 is rotated, it can only drive the magnetic slider 42 to rotate synchronously. The valve stem 31 will no longer rotate synchronously with the rotating cover 41, thereby realizing the idling of the magnetic locking valve and greatly improving the anti-theft capability of the magnetic locking valve.

[0064] Figure 5 A schematic diagram of the rotating cover 41 provided in this embodiment is shown. Figure 6 A first structural schematic diagram of the slider body 421 provided in this embodiment is shown. Figure 7 A second structural schematic diagram of the slider body 421 provided in this embodiment is shown. (See attached diagram.) Figures 5-6 and combined Figure 2 As shown, the magnetic slider 42 includes a slider body 421 and a first magnetic element 422 embedded in the slider body 421. The rotating cover 41 has an inner square hole 412, in which the slider body 421 is slidably fitted. The end of the slider body 421 facing the valve stem 31 has a insertion hole 4201, and the top of the valve stem 31 has an insertion end 314 that can be inserted into the insertion hole 4201. By providing the inner square hole 412 in the rotating cover 41 that engages with the slider body 421, the slider body 421 can move relative to the rotating cover 41 along the axial direction of the valve stem 31, while preventing relative rotation between the slider body 421 and the rotating cover 41. By providing the insertion hole 4201 at the end of the slider body 421 facing the valve stem 31 that can be inserted into the top of the valve stem 31, circumferential fixation of both in the unlocked state can be achieved, ensuring the fixation effect between them.

[0065] like Figure 3 and Figure 6As shown, the insertion hole 4201 is a non-circular hole, and the shape of the insertion end 314 is adapted to the insertion hole 4201 to ensure that the valve stem 31 can rotate synchronously with the rotating cover 41 and to prevent relative rotation between the valve stem 31 and the slider body 421. It should be explained that the non-circular shape can be a polygon such as a triangle or hexagon, or a regular shape formed by alternating straight lines and curves, or an irregular shape formed by straight lines and curves, or a regular or irregular shape formed by curves. This embodiment does not limit this.

[0066] like Figure 2 and Figure 6 As shown, to make the installation of the return spring 43 more secure, the magnetic slider 42 also includes a guide boss 423. The radial cross-sectional area of ​​the guide boss 423 is smaller than the radial cross-sectional area of ​​the slider body 421. The guide boss 423 is fixed to the bottom surface of the slider body 421 facing the return spring 43, and one end of the return spring 43 is sleeved on the guide boss 423. By setting the guide boss 423, the return spring 43 can be guided and limited, thereby preventing the return spring 43 from tilting and causing a change in the direction of the elastic force, thus ensuring that the return spring 43 applies a more stable force to the magnetic slider 42.

[0067] Optionally, the insertion hole 4201 penetrates the guide boss 423 and extends upward into the slider body 421, thereby giving the insertion hole 4201 a greater depth to increase the contact length between the insertion hole 4201 and the valve stem 31, obtain sufficient torque, and thus drive the valve stem 31 to rotate more stably.

[0068] like Figure 2 and Figure 7 As shown, a weight-reducing groove 4211 is provided at the end of the slider body 421 away from the valve stem 31, and several mutually spaced first magnetic elements 422 are embedded in the wall surrounding the weight-reducing groove 4211. In this embodiment, four first magnetic elements 422 are provided. Of course, this embodiment does not limit the number of first magnetic elements 422 provided; three, five, six, or even more can be provided. By providing the weight-reducing groove 4211 on the slider body 421, the weight of the slider body 421 can be significantly reduced, thereby reducing the pressure of the slider body 421 on the return spring 43 and extending the service life of the return spring 43. In addition, the first magnetic elements 422 are arranged around the weight-reducing groove 4211, which is a more reasonable layout and makes the overall weight distribution of the slider body 421 more balanced, which is conducive to maintaining its stability during the up and down sliding process.

[0069] Optionally, the first magnetic component 422 is cylindrical, and the slider body 421 has multiple receiving grooves 4212 spaced circumferentially around the weight-reducing groove 4211. The receiving grooves 4212 are used to limit the position of each first magnetic component 422. It is understood that the receiving groove 4212 does not need to be a complete circular hole. It can be designed so that the receiving groove 4212 partially overlaps with the weight-reducing groove 4211. As long as the curvature of the solid part of the receiving groove 4212 is maintained above 180°, the first magnetic component 422 can be limited, preventing the first magnetic component 422 from detaching from the receiving groove 4212 and falling into the weight-reducing groove 4211.

[0070] like Figure 2 As shown, the magnetic locking valve also includes a magnetic key 60 that is compatible with the rotating cover 41. The magnetic key 60 provides external magnetic force to the magnetic slider 42. When it is necessary to switch the magnetic locking valve from the locked state to the unlocked state, the magnetic key 60 can be used to provide external magnetic force to the magnetic slider 42, so that it is brought close to the valve stem 31 and circumferentially fixed to the valve stem 31, so that the magnetic slider 42 and the valve stem 31 can rotate synchronously. At this time, the operator can rotate the rotating cover 41 to drive the valve stem 31 to rotate, thereby opening and closing the flow channel 101 of the valve core 32.

[0071] Figure 8 A schematic diagram of the structure of the magnetic key 60 provided in this embodiment is shown. Figure 8 and combined Figure 2 As shown, the magnetic key 60 includes a key body 61 and a second magnetic element 62. The key body 61 is provided with an insertion groove 611 that can be inserted and engaged with the rotating cover 41. The second magnetic element 62 is embedded in the key body 61, and the second magnetic element 62 and the first magnetic element 422 are magnetically repelled. In this embodiment, the number of sets of the second magnetic element 62 is equal to the number of sets of the first magnetic element 422. When the second magnetic element 62 and the first magnetic element 422 are opposite each other, they repel each other, so that the magnetic slider 42 slides relative to the rotating cover 41 and is circumferentially fixed to the valve stem 31.

[0072] Optionally, the cross-sectional shape of the insertion slot 611 is non-circular, and the shape of the rotating cover 41 is adapted to the shape of the insertion slot 611 to ensure that after the magnetic key 60 is inserted into the rotating cover 41, rotating the magnetic key 60 can drive the rotating cover 41 to rotate synchronously. It should be explained that the non-circular shape can be a polygon such as a triangle or hexagon, or a regular shape formed by alternating straight lines and curves, or an irregular shape formed by straight lines and curves, or a regular or irregular shape formed by curves. This embodiment does not limit this.

[0073] To ensure stable installation of the second magnetic component 62, a mounting groove 612 for accommodating the second magnetic component 62 is provided at the bottom of the insertion groove 611. The second magnetic component 62 is adhered to the mounting groove 612, ensuring a stable connection and facilitating operation.

[0074] Figure 9 A cross-sectional schematic diagram of the rotating cover 41 provided in this embodiment is shown. Figure 10 A cross-sectional schematic diagram of the valve cover 20 provided in this embodiment is shown. Figures 9-10 and combined Figure 2 , Figure 5 As shown, the magnetic locking valve also includes a pin 50. A socket 411 is provided on the side wall of the rotating cover 41, and an annular groove 201 corresponding to the socket 411 is provided on the side wall of the valve cover 20. One end of the pin 50 passes through the socket 411, and the other end of the pin 50 is slidably engaged in the annular groove 201. By providing the pin 50, the rotating cover 41 can be limited to ensure its stability when rotating relative to the valve cover 20, and prevent the rotating cover 41 from detaching from the valve cover 20 during rotation. Compared to the gland in the prior art, the pin 50 simplifies the structure of the magnetic locking valve by eliminating the need for machining the threads on the outer wall of the valve cover 20, simplifying the machining process, reducing material and machining costs, and the pin 50 is lighter than the gland, which can reduce the overall weight of the magnetic locking valve to a certain extent, making it more portable. On the other hand, it can prevent the rotating cover 41 from not rotating due to the gland being too tight or the rotating cover 41 from shaking due to the gland being too loose.

[0075] Continue as Figure 2 , Figure 5 and Figure 10 As shown, in this embodiment, the pin 50 is fixedly connected to the socket 411 to improve the stable fit between the pin 50 and the rotating cover 41, and to prevent the pin 50 from falling out of the socket 411 during the rotation of the rotating cover 41, thus affecting the normal use of the magnetic locking valve. Specifically, the pin 50 is interference-fitted into the socket 411.

[0076] When assembling this magnetic locking valve, the rotating cover 41 is usually first fitted onto the valve cover 20, and then the pin 50 is installed from the outside of the rotating cover 41. To facilitate the installation of the pin 50, the opening of the insertion hole 411 facing outward is flared, thereby improving the ease of installation of the pin 50.

[0077] Optionally, the number of insertion holes 411 is at least two, with each insertion hole 411 spaced apart circumferentially along the rotating cover 41, and each insertion hole 411 is provided with a pin 50. This arrangement can further ensure the stability of the rotating cover 41 during rotation and improve the balance of forces between the rotating cover 41 and the valve cover 20.

[0078] The following is combined with Figures 1-10 Briefly describe the working principle of this magnetic shut-off valve:

[0079] 1) When it is necessary to switch from the locked state to the unlocked state, the operator can align the insertion slot 611 of the magnetic key 60 with the rotating cover 41 to make the two fit together. Under the action of the magnetic repulsion of the second magnetic element 62, the magnetic slider 42 overcomes the elastic force of the return spring 43 and moves towards the valve stem 31, and is circumferentially fixed with the valve stem 31. At this time, the rotating cover 41 forms a rotation restriction connection with the valve stem 31 through the magnetic slider 42. The rotating cover 41 is connected to the valve stem 31 through the magnetic slider 42, and the three can rotate synchronously, thereby controlling the opening or closing of the magnetic locking valve.

[0080] 2) When it is necessary to switch from the unlocked state to the locked state, the operator can remove the magnetic key 60 from the rotating cover 41. The magnetic attraction of the second magnetic component 62 to the magnetic slider 42 will disappear, and the magnetic slider 42 will be reset under the elastic action of the return spring 43, so as to disengage from the valve stem 31. When the rotating cover 41 is rotated, it can only drive the magnetic slider 42 to rotate synchronously, and the valve stem 31 will no longer rotate synchronously with the rotating cover 41, thereby realizing the idling of the magnetic locking valve.

[0081] Continue as Figure 2 and Figure 5 As shown, the rotating cover 41 includes a flanged section 4101, an intermediate section 4103, and a straight pipe section 4102 connected sequentially from top to bottom along the axial direction. The insertion hole 411 is located in the straight pipe section 4102, near its port. To ensure a tight seal between the rotating cover 41 and the valve cover 20, a third sealing element 703 is also provided between them. In this embodiment, the third sealing element 703 is located in the intermediate section 4103.

[0082] Example 2

[0083] The specific structure of the magnetic locking valve provided in this embodiment is roughly the same as that of the magnetic locking valve in Embodiment 1, except that the structure of the rotating cover 41 is different.

[0084] Figure 11 A cross-sectional schematic diagram of the magnetic locking valve provided in this embodiment is shown. Figure 12 A schematic diagram of the rotating cover 41 provided in this embodiment is shown. Figure 11 and Figure 12 and combined Figure 2As shown, in this embodiment, the rotating cover 41 includes a flanged section 4101 and a straight pipe section 4102 connected sequentially from top to bottom along the axial direction. The insertion hole 411 is located in the straight pipe section 4102, near its port. A third sealing element 703 is disposed in the straight pipe section 4102. This arrangement omits the intermediate section 4103, simplifying the manufacturing process. Furthermore, compared to the rotating cover 41 in Embodiment 1, this rotating cover 41 uses less material, resulting in lower material costs.

[0085] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A magnetic locking valve, comprising a valve body (10), a valve cover (20), and a valve stem assembly (30), wherein a flow channel (101) is provided inside the valve body (10), the valve cover (20) is mounted on the valve body (10), the valve stem assembly (30) comprises a valve stem (31) and a valve core (32), one end of the valve stem (31) is rotatably inserted through the valve cover (20), and the other end of the valve stem (31) is connected to the valve core (32), wherein rotation of the valve stem (31) enables the valve core (32) to open and close the flow channel (101), characterized in that, The magnetic locking valve further comprises: A rotating cover assembly (40) comprising a rotating cover (41) sleeved on the valve cover (20), the rotating cover (41) covers the valve stem (31), and the rotating cover assembly (40) is selectively circumferentially fixed with the top of the valve stem (31) so that the rotating cover (41) rotates synchronously with the valve stem (31); a side wall of the rotating cover (41) is provided with a bushing (411), and a side wall of the valve cover (20) is provided with an annular groove (201) corresponding to the bushing (411); A latch (50) having one end penetrating the bushing (411) and the other end slidingly fitted in the annular groove (201).

2. The magnetic latching valve of claim 1, wherein, The latch (50) is fixedly connected with the bushing (411).

3. The magnetic latching valve of claim 2, wherein, The latch (50) is interference-fitted in the bushing (411).

4. The magnetic latching valve of claim 1, wherein, The opening of the bushing (411) outward is flared.

5. The magnetic latching valve of claim 1, wherein, The number of the bushings (411) is at least two, each of the bushings (411) is spaced along the circumference of the rotating cover (41), and each of the bushings (411) is provided with the latch (50).

6. The magnetic latching valve of any one of claims 1-5, wherein, The rotating cover assembly (40) further comprises: A magnetic slider (42) slidingly arranged in the rotating cover (41) and capable of synchronously rotating with the rotating cover (41), the magnetic slider (42) is capable of moving towards the valve stem (31) under the action of external magnetic force and is circumferentially fixed with the valve stem (31); A return spring (43) having two ends respectively abutting against the magnetic slider (42) and the valve stem (31).

7. The magnetic latching valve of claim 6, wherein, The magnetic slider (42) comprises a slider body (421) and a first magnetic member (422) embedded in the slider body (421), the rotating cover (41) is provided with an inner square hole (412), the slider body (421) is slidingly fitted in the inner square hole (412), one end of the slider body (421) towards the valve stem (31) is provided with a plug-in hole (4201), and the top of the valve stem (31) is provided with a plug-in end (314) capable of plug-in cooperation with the plug-in hole (4201).

8. The magnetic latching valve of claim 7, wherein, The cross-sectional shape of the plug-in hole (4201) is non-circular.

9. The magnetic latching valve of claim 6, wherein, The magnetic locking valve further comprises a magnetic key (60) capable of adapting to the rotating cover (41), the magnetic key (60) is capable of providing external magnetic force for the magnetic slider (42).

10. The magnetic latching valve of any one of claims 1-5, wherein, The rotating cover (41) comprises a straight pipe section (4102) and a pull opening section (4101) connected in sequence along the axial direction, the bushing (411) is arranged at the port of the straight pipe section (4102).

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