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 assembly, a valve rod assembly, a valve cover sleeve, an elastic piece device and a magnetic plug pin, the valve body assembly is provided with a flow channel, the valve rod assembly comprises a valve rod and a valve element, the valve rod is arranged in the valve body assembly in a penetrating mode, the valve rod rotates to drive the valve element to open and close the flow channel, and the valve cover sleeve is rotationally arranged outside the valve body assembly in a sleeving mode and connected with the valve rod. One of the valve body assembly and the valve cover sleeve is provided with a containing groove and a movable channel communicated with the containing groove, and the other one of the valve body assembly and the valve cover sleeve is provided with a locking hole right opposite to the movable channel. The elastic piece device comprises a fixing piece and a reset elastic piece which are connected, and the fixing piece is contained in the containing groove. The movable channel and the locking hole can jointly contain the magnetic plug pin, the end, facing the movable channel, of the magnetic plug pin abuts against the reset elastic piece, and the magnetic plug pin can be separated from the locking hole under the action of external magnetic force and enables the reset elastic piece to elastically deform. The magnetic locking valve is low in machining cost and stable in use performance.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a magnetic locking valve. Background Art

[0002] A locking valve is a kind of valve that manually cuts off or connects the flow of the medium in the pipeline through a special key, and can be widely used in various pipelines for liquid control, which can achieve the functions of preventing the theft of liquid medium and cutting off the water supply when maliciously in arrears.

[0003] Most of the existing locking valves on the market adopt magnetic locking valves, and the magnetic locking valves rely on the action of magnetic force to control the locking and unlocking of the valves. In the magnetic locking valve in the related technology, when there is no key to start, the magnetic steel connects the valve cover sleeve and the valve cover together under the elastic action of the spring. At this time, the magnetic steel plays the role of a bolt, and the valve cover cannot rotate, and the valve opening and closing cannot be controlled without a special key; when unlocking is required, the special key is sleeved on the valve cover sleeve, and the magnetic steel on the special key can push away the magnetic steel between the valve cover sleeve and the valve cover, and the magnetic steel will compress the spring to separate the valve cover sleeve from the valve cover. At this time, rotating the key can drive the valve cover sleeve and the valve rod assembly connected to the valve cover sleeve to rotate to cut off or connect the flow of the medium in the pipeline. However, the above setting method has the following problems: 1) During assembly, the installation accuracy requirements of the spring are relatively high, and the processing requirements for the product are relatively high, which will greatly increase the processing cost; 2) There is no sealing structure between the valve cover sleeve and the valve cover, resulting in that dust, impurities, etc. in the external environment are easily introduced from the gap between the valve cover sleeve and the valve cover, and the spring has a pitch gap due to its spiral structure and is easily affected by environmental factors and corrosive impurities, thereby affecting the service performance of the magnetic locking valve.

[0004] Therefore, there is an urgent need to propose a magnetic locking valve to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a magnetic locking valve, which can solve the technical problem of increased processing cost caused by the relatively high installation accuracy requirements of the spring, and can ensure that the magnetic locking valve has more stable and reliable service performance.

[0006] With the above concept, the technical solution adopted by the utility model is as follows:

[0007] A magnetic locking valve includes a valve body assembly and a valve rod assembly. The valve body assembly has a flow channel. The valve rod assembly includes a valve rod and a valve core connected to the valve rod. The valve rod passes through the valve body assembly, and the rotation of the valve rod can drive the valve core to open and close the flow channel. The magnetic locking valve further includes:

[0008] A valve cover sleeve is rotatably sleeved outside the valve body assembly and connected to the valve stem, wherein one of the valve body assembly and the valve cover sleeve is provided with a receiving groove and a movable channel connected to the receiving groove, and the other is provided with a locking hole that can be directly opposite to the movable channel;

[0009] The spring device comprises a fixing member and a reset spring member connected to each other, wherein the fixing member is accommodated in the accommodation groove;

[0010] The magnetic latch, the movable channel and the locking hole can accommodate the magnetic latch together, the end of the magnetic latch facing the movable channel is abutted against the reset spring sheet, and the magnetic latch can be separated from the locking hole under the action of external magnetic force, and the reset spring sheet can undergo elastic deformation.

[0011] As a preferred solution of the magnetic locking valve provided by the utility model, the free end of the reset spring is tilted toward a side away from the fixing member.

[0012] As a preferred solution of the magnetic locking valve provided by the utility model, the fixing member is provided with an escape notch corresponding to the reset spring sheet.

[0013] As a preferred solution of the magnetic locking valve provided by the utility model, an arc-shaped transition connection portion is provided between the fixing member and the reset spring sheet.

[0014] As a preferred solution of the magnetic locking valve provided by the utility model, the fixing member and the reset spring piece are an integrated structure.

[0015] As a preferred solution of the magnetic locking valve provided by the utility model, the fixing member is provided with a first positioning structure, and the accommodating groove is provided with a second positioning structure matched with the first positioning structure.

[0016] As a preferred solution of the magnetic locking valve provided by the utility model, the locking hole, the magnetic latch, the reset spring and the movable channel correspond to each other one by one and cooperate with each other to form a limit assembly, and the magnetic locking valve includes at least two limit assemblies.

[0017] As a preferred solution of the magnetic locking valve provided by the utility model, the fixing piece is annular, each of the reset springs is connected to the fixing piece and arranged at intervals along the circumference of the fixing piece, and each of the reset springs is connected between the inner ring wall and the outer ring wall of the fixing piece.

[0018] As a preferred solution of the magnetic locking valve provided by the utility model, the fixing member includes an annular body and a connecting portion connected to the outer side of the annular body and corresponding to the reset spring sheet one by one, and the reset spring sheet is connected to the corresponding connecting portion.

[0019] As a preferred solution of the magnetic locking valve provided by the present utility model, each of the reset elastic pieces corresponds to one of the fixing pieces.

[0020] The beneficial effects of the present utility model are as follows:

[0021] The present utility model provides a magnetic locking valve. When it is necessary to switch from the locked state to the unlocked state, an external magnetic force is applied. The magnetic bolt can be disengaged from the locking hole under the action of the external magnetic force and completely received in the movable channel, and at the same time, the reset elastic piece undergoes elastic deformation. At this time, rotating the valve cover sleeve can drive the valve stem connected thereto to rotate simultaneously, thereby achieving the effect of opening and closing the flow channel of the valve body assembly by the valve core; when it is necessary to switch from the unlocked state to the locked state, the action of the external magnetic force can be made to disappear, and the magnetic bolt can be inserted into the locking hole under the action of the elastic restoring force of the reset elastic piece, so that the valve cover sleeve and the valve body assembly are connected by the magnetic bolt to achieve the locking of the two. This magnetic locking valve uses a leaf spring device to replace the spiral spring in the prior art and cooperates with the magnetic bolt to achieve the locking and unlocking of the valve cover sleeve and the valve body assembly. On the one hand, compared with the spiral spring, the installation accuracy requirement of this leaf spring device is lower, the processing requirement for the product is lower, and the processing cost can be reduced to a certain extent; on the other hand, this leaf spring device has no pitch gap and is not easily affected by environmental factors and corrosive impurities, which can ensure that this magnetic locking valve has more stable and reliable use performance. Description of the Drawings

[0022] Figure 1 is a schematic cross-sectional structure view of the magnetic locking valve provided by Embodiment 1 of the present utility model;

[0023] Figure 2 is a schematic structure view of the assembly of the valve cover sleeve and the leaf spring device provided by Embodiment 1 of the present utility model;

[0024] Figure 3 is a schematic structure view of the valve cover sleeve provided by Embodiment 1 of the present utility model;

[0025] Figure 4 is a schematic structure view of the leaf spring device provided by Embodiment 1 of the present utility model;

[0026] Figure 5 is a schematic structure view of the valve cover sleeve provided by Embodiment 2 of the present utility model;

[0027] Figure 6 is a schematic structure view of the leaf spring device provided by Embodiment 2 of the present utility model;

[0028] Figure 7 is a schematic structure view of the assembly of the valve cover sleeve and the leaf spring device provided by Embodiment 3 of the present utility model;

[0029] Figure 8 It is a schematic structural diagram of the valve cover sleeve provided in the third embodiment of the present utility model;

[0030] Figure 9 It is a schematic structural diagram of the elastic piece device provided in the third embodiment of the present utility model;

[0031] Figure 10 It is a schematic cross-sectional structural diagram of the magnetic locking valve provided in the fourth embodiment of the present utility model.

[0032] In the figure:

[0033] 100, valve body assembly; 110, valve body; 111, flow channel; 120, valve cover; 1201, locking hole;

[0034] 200, valve stem assembly; 210, valve stem; 220, valve core;

[0035] 300, valve cover sleeve; 301, accommodation groove; 302, activity channel; 303, second positioning structure; 3031, first positioning groove; 3032, second positioning groove; 304, insertion hole;

[0036] 400, elastic piece device; 410, fixing piece; 411, annular body; 412, connecting part; 4101, avoiding notch; 4102, first positioning structure; 41021, first positioning protrusion; 41022, second positioning protrusion; 4103, inner ring wall; 4104, outer ring wall; 420, reset elastic piece; 421, abutting part; 430, transition connecting part;

[0037] 500, magnetic plug;

[0038] 600, magnetic key; 610, key body; 620, rotating handle. Detailed implementation manners

[0039] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0040] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0042] In the description of this embodiment, the orientation or positional relationship terms such as "above", "below", "left" and "right" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] The present utility model provides a magnetic locking valve, which is applied in various pipelines and is used to cut off or connect the medium flow in the pipeline so as to achieve the purpose of preventing the theft of liquid medium and cutting off the water supply in case of malicious default. The magnetic locking valve can be a gate valve, a ball valve or other valves with locking functions, and no specific limitation is made here. The specific structure of the magnetic locking valve provided by the present utility model will be introduced below through multiple embodiments.

[0044] Embodiment 1

[0045] Figure 1 Shows a schematic cross-sectional structure diagram of the magnetic locking valve provided in this embodiment. As Figure 1 shown, this embodiment provides a magnetic locking valve, which includes a valve body assembly 100 and a valve stem assembly 200. The valve body assembly 100 has a flow channel 111, and both ends of the flow channel 111 are used to connect external pipelines so that the liquid medium in the external pipelines can flow through the flow channel 111. The valve stem assembly 200 includes a valve stem 210 and a valve core 220 connected to the valve stem 210. The valve stem 210 is disposed in the valve body assembly 100, and the valve core 220 is located in the flow channel 111. By rotating the valve stem 210 around the axis in different directions, the valve core 220 can be lowered or raised, thereby cutting off or connecting the flow channel 111, realizing the truncation or flow of the liquid medium, and thus realizing the closing or opening of the magnetic locking valve.

[0046] In this embodiment, the valve stem 210 is threadedly connected to the valve core 220. By rotating the valve stem 210, the valve core 220 can be driven to move along the axis direction of the valve stem 210.

[0047] Figure 2 The structural schematic diagram of the assembly of the valve cover sleeve 300 and the elastic piece device 400 provided in this embodiment is shown. Figure 3 The structural schematic diagram of the valve cover sleeve 300 provided in this embodiment is shown. Figure 4 The structural schematic diagram of the elastic piece device 400 provided in this embodiment is shown. As Figures 2 - 4 And in combination with Figure 1 As shown, in order to realize the switching between the locked state and the unlocked state of the magnetic lock valve, the magnetic lock valve further includes a valve cover sleeve 300, an elastic piece device 400 and a magnetic plug 500. The valve cover sleeve 300 is rotatably sleeved outside the valve body assembly 100 and is connected to the valve stem 210. An accommodation groove 301 and an activity channel 302 communicating with the accommodation groove 301 are provided on one of the valve body assembly 100 and the valve cover sleeve 300, and a locking hole 1201 that can be aligned with the activity channel 302 is provided on the other; the elastic piece device 400 includes a fixed piece 410 and a return elastic piece 420 connected to each other. The fixed piece 410 is accommodated in the accommodation groove 301; the activity channel 302 and the locking hole 1201 can jointly accommodate the magnetic plug 500. One end of the magnetic plug 500 facing the activity channel 302 abuts against the return elastic piece 420. The magnetic plug 500 can be separated from the locking hole 1201 under the action of an external magnetic force, and the return elastic piece 420 undergoes elastic deformation.

[0048] For the magnetic locking valve provided in this embodiment, when it is necessary to switch from the locked state to the unlocked state, an external magnetic force is applied. The magnetic bolt 500 can be disengaged from the locking hole 1201 under the action of the external magnetic force and be completely accommodated in the movable channel 302. At the same time, the reset spring piece 420 undergoes elastic deformation. At this time, rotating the valve cover sleeve 300 can drive the valve stem 210 connected thereto to rotate simultaneously, thereby achieving the effect of opening and closing the flow channel 111 of the valve body assembly 100 by the valve core 220. When it is necessary to switch from the unlocked state to the locked state, the action of the external magnetic force can be eliminated. The magnetic bolt 500 can be inserted into the locking hole 1201 under the action of the elastic restoring force of the reset spring piece 420, so that the valve cover sleeve 300 and the valve body assembly 100 are connected by the magnetic bolt 500 to achieve the locking of the two. This magnetic locking valve uses the spring piece device 400 to replace the spiral spring in the prior art and cooperates with the magnetic bolt 500 to achieve the locking and unlocking of the valve cover sleeve 300 and the valve body assembly 100. On the one hand, compared with the spiral spring, the spring piece device 400 has lower installation accuracy requirements and lower processing requirements for products, which can reduce the processing cost to a certain extent. On the other hand, the spring piece device 400 has no pitch gap and is not easily affected by environmental factors and corrosive impurities, which can ensure that the magnetic locking valve has more stable and reliable use performance.

[0049] In this embodiment, the valve body assembly 100 includes a valve body 110 and a valve cover 120. The flow channel 111 is opened on the valve body 110; the valve cover 120 is sealingly connected to the top of the valve body 110; the valve cover sleeve 300 is rotatably sleeved outside the valve cover 120. The locking hole 1201 is opened on the valve cover 120. The accommodation groove 301 and the movable channel 302 are both opened on the valve cover sleeve 300. Optionally, the valve cover 120 is threadedly connected to the valve body 110. The threaded connection has the advantages of firm connection and convenient disassembly and assembly. To achieve the sealing connection between the valve cover 120 and the valve body 110, a sealing member is also provided between the valve cover 120 and the valve body 110.

[0050] To achieve the connection between the valve cover sleeve 300 and the valve stem 210 and ensure that the rotation of the valve cover sleeve 300 can drive the valve stem 210 to rotate synchronously in the unlocked state, in this embodiment, a plug hole 304 is provided on the valve cover sleeve 300, and one end of the valve stem 210 away from the valve core 220 is inserted into the plug hole 304 to achieve the circumferential fixation of the valve cover sleeve 300 and the valve stem 210. Optionally, the plug hole 304 is a non-circular hole to prevent relative rotation between the valve cover sleeve 300 and the valve stem 210. It should be noted that the non-circular shape can be a polygon such as a triangle, rectangle, hexagon, etc., or a regular pattern formed by alternating straight lines and curves, or an irregular pattern formed by straight lines and curves, or a regular or irregular pattern formed by curves and curves. This embodiment does not limit this, as long as the valve cover sleeve 300 and the valve stem 210 that are inserted into each other can rotate synchronously and prevent relative rotation between the valve cover sleeve 300 and the valve stem 210.

[0051] As Figure 4 shown, the free end of the return spring piece 420 tilts towards the side away from the fixing member 410, so that the return spring piece 420 has a pre-deformation amount, ensuring that when the magnetic locking valve switches from the unlocked state to the locked state, the return spring piece 420 can drive the magnetic plug 500 to reset.

[0052] Optionally, an arc-shaped transition connecting portion 430 is provided between the fixing member 410 and the return spring piece 420 to prevent the return spring piece 420 from breaking at the connection between the two after being bent relative to the fixing member 410 multiple times, thereby being able to extend the service life of the spring device 400. In this embodiment, the fixing member 410, the return spring piece 420, and the transition connecting portion 430 are of an integral structure, which is convenient for processing, can save the assembly links between multiple parts, and improve the processing efficiency.

[0053] Continuing as Figures 1 - 4 shown, the locking hole 1201, the magnetic plug 500, the return spring piece 420, and the movable channel 302 correspond to each other and cooperate with each other to jointly form a limiting component, and the magnetic locking valve includes at least two such limiting components. This design can increase the number of connection positions between the valve cover 120 and the valve cover sleeve 300 in the locked state of the magnetic locking valve, thereby further improving its stability in the locked state and ensuring its safety during use.

[0054] Specifically, in the present embodiment, the fixing member 410 is annular, and each reset spring sheet 420 is connected to the fixing member 410 and arranged at intervals along the circumference of the fixing member 410, and each reset spring sheet 420 is connected between the inner ring wall 4103 and the outer ring wall 4104 of the fixing member 410. With this arrangement, only one spring sheet device 400 is needed to correspond to multiple magnetic latches 500, which is convenient for processing and assembly, and can reduce processing costs. In the present embodiment, the number of magnetic latches 500 is two, and accordingly, the number of reset spring sheets 420 is two. While ensuring that the magnetic locking valve has good safety performance, the number of magnetic latches 500 is reduced to reduce processing costs. Of course, in other embodiments, the number of magnetic latches 500 can also be one, three, four, or even more, and the designer can adjust the number of magnetic latches 500 according to actual needs.

[0055] Optionally, the fixing member 410 is provided with an escape notch 4101 corresponding to the reset spring sheet 420. The setting of the escape notch 4101 can increase the moving path of the magnetic latch 500 when it is acted upon by an external magnetic force, that is, when the magnetic latch 500 is acted upon by an external magnetic force, it can push the reset spring sheet 420 from one side of the fixing member 410 through the escape notch 4101 to move to the other side of the fixing member 410. This design can reduce the tilting angle of the free end of the reset spring sheet 420 relative to the fixing member 410, thereby ensuring the structural stability of the spring sheet device 400.

[0056] In this embodiment, the free end of the reset spring 420 is formed with a supporting portion 421 for supporting the magnetic latch 500, and the shape of the supporting portion 421 is adapted to the end surface shape of the magnetic latch 500. The setting of the supporting portion 421 can, on the one hand, provide positioning for the installation of the spring device 400 and the valve cover sleeve 300, that is, when the supporting portion 421 is directly opposite to the active channel 302, the spring device 400 and the valve cover sleeve 300 are installed in place; on the other hand, it can increase the contact area between the reset spring 420 and the magnetic latch 500, thereby improving the stability of the cooperation between the two.

[0057] like Figures 2 - 4As shown in the figure, to further ensure the accurate installation of the shrapnel device 400 and the valve cover sleeve 300 and prevent relative displacement between the two after installation, a first positioning structure 4102 is provided on the fixing member 410, and a second positioning structure 303 that cooperates with the first positioning structure 4102 is provided on the valve cover sleeve 300. In this embodiment, the first positioning structure 4102 includes a first positioning protrusion 41021 provided on the inner ring wall 4103 of the fixing member 410 and a second positioning protrusion 41022 provided on the outer ring wall 4104 of the fixing member 410. The second positioning structure 303 includes a first positioning groove 3031 that cooperates with the first positioning protrusion 41021 and a second positioning groove 3032 that cooperates with the second positioning protrusion 41022.

[0058] Specifically, the inner ring wall 4103 of the fixing member 410 is convexly provided with the above-mentioned first positioning protrusion 41021 in the direction approaching the center of the fixing member 410 at the position corresponding to the abutting portion 421, and the outer ring wall 4104 of the fixing member 410 is convexly provided with the above-mentioned second positioning protrusion 41022 in the direction away from the center of the fixing member 410 at the position corresponding to the abutting portion 421. The first positioning groove 3031 and the second positioning groove 3032 are both provided on the inner wall of the movable channel 302 of the valve cover sleeve 300. Of course, in another embodiment, the first positioning protrusion 41021 and the second positioning protrusion 41022 can also be provided at other positions of the fixing member 410, and the first positioning groove 3031 and the second positioning groove 3032 are correspondingly provided on the inner wall of the accommodating groove 301, which can also achieve the above effects. In addition, in another embodiment, the first positioning structure 4102 can also be provided on the valve cover sleeve 300, and the second positioning structure 303 can be provided on the fixing member 410.

[0059] Optionally, the number of the first positioning structures 4102 is at least two, and the first positioning structures 4102 are arranged at intervals along the circumferential direction of the fixing member 410. Each first positioning structure 4102 corresponds to a second positioning structure 303 to further improve the positioning and limiting effects of the first positioning structure 4102 and the second positioning structure 303 on the shrapnel device 400 and the valve cover sleeve 300.

[0060] Continue as Figure 1 As shown in the figure, the magnetic locking valve further includes a magnetic key 600 that can be adapted to the valve cover sleeve 300. The magnetic key 600 can provide an external magnetic force for the magnetic bolt 500. The magnetic force between the magnetic key 600 and the magnetic bolt 500 attracts each other, so as to control the opening or closing of the magnetic locking valve under the action of the magnetic key 600.

[0061] Specifically, the magnetic key 600 includes a key body 610 and an unlocking magnet (not shown in the figure). A mating groove capable of being inserted and mated with the valve cover sleeve 300 is provided on the key body 610. The unlocking magnet is embedded in the key body 610, and the unlocking magnet and the magnetic pin 500 are magnetically attracted to each other. When the magnetic locking valve needs to be switched to the unlocking state, the mating groove of the magnetic key 600 can be aligned with the valve cover sleeve 300 so that the two are inserted and mated. The magnetic pin 500 can then overcome the elastic force of the reset spring piece 420 under the magnetic attraction of the unlocking magnet and disengage from the locking hole 1201, and be completely accommodated in the movable channel 302. At this time, rotating the valve cover sleeve 300 can drive the valve stem 210 to rotate synchronously, thereby achieving the effect of opening and closing the flow channel 111 of the valve body 110 by the valve core.

[0062] For the convenience of user operation, a rotating handle 620 is further provided on the key body 610. An operator can hold the rotating handle 620 by hand to rotate the key body 610. Optionally, the number of the rotating handles 620 is two, and the two rotating handles 620 are symmetrically arranged on both sides of the key body 610 with respect to the axis of the key body 610. The operator can operate with one hand or both hands.

[0063] Embodiment 2

[0064] This embodiment provides a magnetic locking valve. The specific structure of this magnetic locking valve is substantially the same as that of the magnetic locking valve in Embodiment 1, except that: the structure of the spring piece device 400 is different.

[0065] Figure 5 The structural schematic diagram of the valve cover sleeve 300 provided in this embodiment is shown. Figure 6 The structural schematic diagram of the spring piece device 400 provided in this embodiment is shown. As Figures 5 - 6 and in combination with Figure 1 shown, in this embodiment, the fixing member 410 includes an annular body 411 and a connecting portion 412 connected to the outer side of the annular body 411 and corresponding to the reset spring piece 420 one by one. The reset spring piece 420 is connected to the corresponding connecting portion 412. In this embodiment, the avoiding notch 4101 is provided on the connecting portion 412. Compared with the spring piece device 400 in Embodiment 1, in the spring piece device 400 in this embodiment, the annular body 411 is a complete annular structure, and the avoiding notch 4101 is not provided thereon, so that the annular width of the annular body 411 is uniform and the structural stability is better.

[0066] Further, in this embodiment, the first positioning structure 4102 is a positioning groove provided on the inner ring wall 4103 of the annular body 411, and the second positioning structure 303 is a positioning convex provided on the valve cover sleeve 300. The positioning convex cooperates with the positioning groove to achieve the positioning and limiting between the elastic piece device 400 and the valve cover sleeve 300, so as to achieve accurate installation between the two, and prevent the elastic piece device 400 from displacing relative to the valve cover sleeve 300, affecting the accurate reset of the magnetic plug 500.

[0067] In this embodiment, the number of the first positioning structures 4102 is two, and the two first positioning structures 4102 are arranged at intervals along the circumferential direction of the annular body 411. Each first positioning structure 4102 corresponds to a second positioning structure 303, further improving the positioning and limiting effect between the elastic piece device 400 and the valve cover sleeve 300. The number of the first positioning structure 4102 and the second positioning structure 303 in this embodiment is not limited, and designers can adjust them according to actual needs.

[0068] Certainly, in other embodiments, the first positioning structure 4102 can also be a positioning convex provided on the inner ring wall 4103 of the annular body 411, and the second positioning structure 303 is a positioning groove provided on the valve cover sleeve 300, which can also achieve the above effects.

[0069] Embodiment III

[0070] This embodiment provides a magnetic locking valve, and the specific structure of this magnetic locking valve is substantially the same as that of the magnetic locking valve in Embodiment I or Embodiment II, the difference being: the structure of the elastic piece device 400 is different.

[0071] Figure 7 The structural schematic diagram of the assembly of the valve cover sleeve 300 and the elastic piece device 400 provided in this embodiment is shown. Figure 8 The structural schematic diagram of the valve cover sleeve 300 provided in this embodiment is shown. Figure 9 The structural schematic diagram of the elastic piece device 400 provided in this embodiment is shown. As Figures 7 - 9 and in combination with Figure 1 shown, each reset elastic piece 420 corresponds to a fixing member 410. That is to say, in this embodiment, the number of the magnetic plugs 500 is the same as that of the elastic piece devices 400, and they are arranged in one-to-one correspondence; correspondingly, the accommodating grooves 301 provided on the valve cover sleeve 300 also correspond to the elastic piece devices 400 one by one.

[0072] In this embodiment, there are two magnetic latches 500, which are spaced apart along the circumference of the valve cover 120, and each magnetic latch 500 corresponds to a spring device 400, so as to reduce the number of magnetic latches 500 while ensuring that the valve cover sleeve 300 and the valve cover 120 have a good locking effect in the locked state, so as to reduce the processing cost. Of course, this embodiment does not limit the number of magnetic latches 500, and designers can adjust it according to actual needs.

[0073] like Figure 9 As shown, the fixing member 410 is roughly a U-shaped structure, and the U-shaped groove of the U-shaped structure forms the above-mentioned avoidance gap 4101. The reset spring 420 is connected to the bottom of the U-shaped groove of the U-shaped structure and is tilted toward the side away from the fixing member 410. The structure is simple and easy to process.

[0074] It should be noted that, in the present embodiment, the groove wall of the accommodating groove 301 can serve to limit the fixing member 410. Therefore, the second positioning structure 303 can be omitted on the valve cover sleeve 300 of the present embodiment. Similarly, the first positioning structure 4102 can also be omitted on the fixing member 410, so as to simplify the processing technology and improve the processing efficiency.

[0075] Embodiment 4

[0076] This embodiment provides a magnetic locking valve, the specific structure of which is substantially the same as that of the magnetic locking valve in the first embodiment, except that the setting position of the spring device 400 is different.

[0077] Figure 10 FIG. 2 shows a cross-sectional structural diagram of the magnetic lock valve provided in this embodiment. Figure 10 As shown, in this embodiment, the locking hole 1201 is formed on the valve cover sleeve 300 , and the accommodating groove 301 and the movable channel 302 are both formed on the valve cover 120 , that is, the spring device 400 is installed on the valve cover 120 .

[0078] In this embodiment, the magnetic force between the magnetic key 600 and the magnetic latch 500 repels each other, so that the magnetic locking valve is controlled to be opened or closed under the action of the magnetic key 600 . Specifically, when the magnetic locking valve needs to be switched to the unlocked state, the matching groove of the magnetic key 600 can be aligned with the valve cover sleeve 300 so that the two can be plugged and matched. The magnetic latch 500 can overcome the elastic force of the reset spring piece 420 under the magnetic repulsion of the unlocking magnet and detach from the locking hole 1201, and be completely accommodated in the active channel 302 set on the valve cover 120. At this time, rotating the valve cover sleeve 300 can drive the valve stem 210 to rotate synchronously, thereby achieving the effect of making the valve core open and close the flow channel 111 of the valve body 110; when the magnetic locking valve needs to be switched from the unlocked state to the locked state, the magnetic key 600 can be removed from the valve cover sleeve 300. At this time, the magnetic latch 500 can be reset under the elastic action of the reset spring piece 420, so that the locking hole 1201 and the active channel 302 can jointly accommodate the magnetic latch 500, so that the valve cover sleeve 300 and the valve cover 120 are connected through the magnetic latch 500, and the two are locked.

[0079] It should be noted that the present embodiment does not limit the specific structure of the spring device 400 , and the spring device 400 of any one of the first embodiment, the second embodiment or the third embodiment may be adopted.

[0080] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A magnetic locking valve, comprising a valve body assembly (100) and a valve stem assembly (200). The valve body assembly (100) has a flow channel (111). The valve stem assembly (200) includes a valve stem (210) and a valve core (220) connected to the valve stem (210). The valve stem (210) is disposed through the valve body assembly (100), and the rotation of the valve stem (210) can drive the valve core (220) to open and close the flow channel (111). It is characterized in that, The magnetic lock valve also includes: A valve cover sleeve (300) is rotatably sleeved outside the valve body assembly (100) and connected to the valve stem (210); one of the valve body assembly (100) and the valve cover sleeve (300) is provided with a receiving groove (301) and a movable channel (302) connected to the receiving groove (301); and the other is provided with a locking hole (1201) that can be directly opposite to the movable channel (302); The spring element device (400) comprises a fixing member (410) and a reset spring element (420) connected to each other, wherein the fixing member (410) is accommodated in the accommodation groove (301); The magnetic latch (500) is a magnetic latch that can be accommodated together with the locking hole (1201) in the movable channel (302). One end of the magnetic latch (500) facing the movable channel (302) is in contact with the reset spring (420). The magnetic latch (500) can be separated from the locking hole (1201) under the action of an external magnetic force, and the reset spring (420) can be elastically deformed.

2. The magnetic locking valve according to claim 1, characterized in that, The free end of the resetting elastic sheet (420) is tilted toward a side away from the fixing member (410).

3. The magnetic locking valve according to claim 1, characterized in that, The fixing member (410) is provided with an avoidance notch (4101) corresponding to the resetting elastic sheet (420).

4. The magnetic locking valve according to claim 1, wherein, An arc-shaped transition connection portion (430) is provided between the fixing member (410) and the reset spring sheet (420).

5. The magnetic locking valve according to claim 1, wherein The fixing member (410) and the resetting spring sheet (420) are an integrated structure.

6. The magnetic locking valve according to claim 1, characterized in that, The fixing member (410) is provided with a first positioning structure (4102), and the receiving groove (301) is provided with a second positioning structure (303) that matches the first positioning structure (4102).

7. The magnetic locking valve according to any one of claims 1 to 6, characterized in that, The locking hole (1201), the magnetic latch (500), the reset spring (420) and the movable channel (302) correspond to each other and cooperate with each other to form a limit assembly. The magnetic locking valve includes at least two limit assemblies.

8. The magnetic locking valve according to claim 7, characterized in that, The fixing member (410) is annular, and each of the reset springs (420) is connected to the fixing member (410) and arranged at intervals along the circumference of the fixing member (410), and each of the reset springs (420) is connected between the inner annular wall (4013) and the outer annular wall (4014) of the fixing member (410).

9. The magnetic locking valve according to claim 7, characterized in that, The fixing member (410) comprises an annular body (411) and a connecting portion (412) connected to the outer side of the annular body (411) and corresponding one-to-one with the reset spring sheet (420), and the reset spring sheet (420) is connected to the corresponding connecting portion (412).

10. The magnetic locking valve according to claim 7, characterized in that, Each of the resetting springs (420) corresponds to one of the fixing members (410).

Images