Electromagnetic stop valve

Abstract

The utility model belongs to the technical field of valves, and discloses an electromagnetic stop valve. The electromagnetic stop valve comprises a valve body and an electromagnetic actuator, a mounting cavity, a water inlet channel and a water outlet channel are arranged in the valve body, the water inlet channel and the water outlet channel are connected to the same axial end of the mounting cavity, a first communication port is formed between the water inlet channel and the mounting cavity, and a second communication port is formed between the water outlet channel and the mounting cavity; one end of the electromagnetic actuator is contained in the mounting cavity, and the electromagnetic actuator is configured to be capable of opening or closing the first communication opening and the second communication opening. The electromagnetic stop valve can be suitable for lower water inflow, the space structure requirement for lower water inflow is met, an adapter is not needed, and cost increase is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an electromagnetic cut-off valve. Background Art

[0002] An electromagnetic cut-off valve is an electromagnetic water inlet valve that can be assembled in household appliances. For example, it can be applied to the water supply systems of water heaters, heaters, washing machines, etc. When there is a water leak in the system, the electromagnetic cut-off valve can cut off the water source supply to prevent further damage. The existing electromagnetic cut-off valves can only intake water horizontally from the side. When there is a need for water intake from below due to the spatial structure layout, this kind of electromagnetic cut-off valve cannot be used, or a connector needs to be connected to use it, but this will increase the cost.

[0003] Therefore, there is an urgent need to provide an electromagnetic cut-off valve to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electromagnetic cut-off valve that can achieve water intake from below, meet the spatial structure requirements of water intake from below, and does not increase the cost.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The electromagnetic cut-off valve includes:

[0007] A valve body, an installation cavity is provided in the valve body, and a water inlet channel and a water outlet channel are connected to the same axial end of the installation cavity. A first communication port is provided between the water inlet channel and the installation cavity, and a second communication port is provided between the water outlet channel and the installation cavity;

[0008] An electromagnetic actuator, one end of which is received in the installation cavity, and the electromagnetic actuator is configured to be able to open or close the first communication port and the second communication port.

[0009] As an optional solution, the water inlet channel includes a first channel section and a second channel section. The second channel section is connected between the first channel section and the installation cavity, and the second channel section communicates with the installation cavity through the first communication port. One end of the water outlet channel intersects and connects with the second channel section;

[0010] The peripheral wall of the second channel section includes a semicircular wall and a blocking wall connected to each other. The blocking wall blocks between the second channel section and the water outlet channel. One end of the blocking wall extends to the bottom of the installation cavity and jointly encloses the first communication port with the bottom of the installation cavity.

[0011] As an optional solution, the side of the blocking wall close to the water outlet channel is a plane, and the side of the blocking wall close to the second channel section is an arc convex surface.

[0012] As an alternative, the cross-sectional area of the first channel section is S1, and the cross-sectional area of the first communication port is S2, where S2 ≥ S1 / 3.

[0013] As an alternative, a quick-connect structure is provided at the inlet end of the water inlet channel; and / or, a quick-connect structure is provided at the outlet end of the water outlet channel.

[0014] As an alternative, the water outlet channel has at least two water outlet ports, and the orientations of the water outlet ports are different.

[0015] As an alternative, the axis of the water inlet channel is parallel to the axis of the installation cavity, and the axis of the water outlet channel is perpendicular to the axis of the installation cavity; or,

[0016] The axes of the water inlet channel and the water outlet channel are both arranged at an obtuse angle with the axis of the installation cavity.

[0017] As an alternative, the electromagnetic actuator includes:

[0018] An electromagnetic coil, having an inner hole axially penetrating therethrough;

[0019] A bottom plate, disposed at the bottom of the electromagnetic coil and connected to the valve body;

[0020] A moving iron core and a static iron core, both disposed in the inner hole. The moving iron core is located at one axial end of the static iron core and penetrates through the bottom plate and extends into the installation cavity. The moving iron core is movable relative to the static iron core, and an elastic member is provided between the moving iron core and the static iron core;

[0021] A permanent magnet, sleeved outside the moving iron core and abutted between the electromagnetic coil and the bottom plate;

[0022] A sealing assembly, disposed in the installation cavity and connected to one end of the moving iron core away from the static iron core. The sealing assembly is used to open or close the first communication port and the second communication port.

[0023] As an alternative, the electromagnetic actuator further includes a fixing seat. The fixing seat includes a first seat body and a second seat body. The first seat body extends into the inner hole, and the moving iron core and the static iron core are accommodated in the first seat body. The second seat body extends into the installation cavity and is connected to the edge of the sealing assembly.

[0024] As an alternative, a sealing ring is provided between the static iron core and the first seat body.

[0025] Advantages of the present utility model:

[0026] The present utility model provides an electromagnetic cut-off valve. During normal use, the electromagnetic actuator opens the first communication port and the second communication port. After tap water enters the water inlet channel, it enters the installation cavity through the first communication port, then enters the water outlet channel through the second communication port, and finally flows out from the water outlet channel to form normal water supply. When there is a water leak in the system, the electromagnetic actuator closes the first communication port and the second communication port, forming a cut-off between the water inlet channel and the water outlet channel, cutting off the water source supply to prevent further damage. During use, the electromagnetic actuator is arranged upward, so the opening of the installation cavity faces upward. On this basis, the opening of the water inlet channel can be arranged directly downward or obliquely downward. Thus, the electromagnetic cut-off valve can be applicable to water inlet from below, meeting the spatial structure requirements of water inlet from below, and eliminating the need to use an adapter, avoiding cost increase. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the electromagnetic cut-off valve provided by an embodiment of the present utility model;

[0028] Figure 2 is a longitudinal sectional view of the electromagnetic cut-off valve provided by an embodiment of the present utility model;

[0029] Figure 3 is a longitudinal sectional view of the valve body provided by an embodiment of the present utility model;

[0030] Figure 4 is a longitudinal sectional view of the valve body provided by another embodiment of the present utility model;

[0031] Figure 5 is a schematic structural diagram of the valve body provided by an embodiment of the present utility model;

[0032] Figure 6 is a transverse sectional view of the valve body provided by an embodiment of the present utility model;

[0033] Figure 7 is a schematic structural diagram of the valve body provided by another embodiment of the present utility model;

[0034] Figure 8 is Figure 7 a longitudinal sectional view of the valve body in

[0035] Figure 9 is a schematic structural diagram of the valve body provided by still another embodiment of the present utility model;

[0036] Figure 10 is Figure 9 a longitudinal sectional view of the valve body in

[0037] Figure 11 is Figure 9 a transverse sectional view of the valve body in

[0038] Figure 12 It is a longitudinal sectional view of the electromagnetic actuator provided by the embodiment of the present utility model.

[0039] In the figure:

[0040] 10. Valve body; 11. Installation cavity; 12. Water inlet channel; 121. First channel section; 122. Second channel section; 123. Semi-circular wall; 124. Partition wall; 1241. Plane; 1242. Arc convex surface; 125. Water inlet; 13. Water outlet channel; 131. Water outlet; 14. First communication port; 15. Second communication port; 16. Quick-insert connection structure; 17. Plug.

[0041] 20. Electromagnetic actuator; 21. Electromagnetic coil; 211. Skeleton; 2111. Inner hole; 212. Insertion piece; 213. Enameled wire; 214. Outer shell; 215. Extension section; 216. Accommodation groove; 22. Bottom plate; 23. Moving iron core; 24. Static iron core; 241. Sealing ring; 242. Sealing groove; 243. First stepped groove; 244. Second stepped groove; 25. Elastic member; 26. Permanent magnet; 27. Sealing assembly; 271. Sealing seat; 272. Sealing gasket; 28. Fixed seat; 281. First seat body; 282. Second seat body; 29. Bracket. Specific embodiments

[0042] The present utility model will be further described in detail below with reference to the accompanying 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. In addition, it should be noted that for the convenience of description, only parts related to the present utility model rather than all structures are shown in the drawings.

[0043] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall 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 communication inside two elements or the interaction relationship between two elements. 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.

[0044] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0045] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships 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.

[0046] As Figures 1 to 3 shown, this embodiment provides an electromagnetic cut-off valve, which includes a valve body 10 and an electromagnetic actuator 20. An installation cavity 11 is provided in the valve body 10, and a water inlet channel 12 and a water outlet channel 13 connected to the same axial end of the installation cavity 11 are provided. A water inlet 125 is provided at one end of the water inlet channel 12 away from the installation cavity 11, and a water outlet 131 is provided at one end of the water outlet channel 13 away from the installation cavity 11. The water inlet 125 is used to be connected to an external pipeline to achieve water inlet, and the water outlet 131 is connected to an external pipeline to achieve water outlet. A first communication port 14 is provided between the water inlet channel 12 and the installation cavity 11, and a second communication port 15 is provided between the water outlet channel 13 and the installation cavity 11. That is to say, in combination Figure 3 and Figure 5 , a first communication port 14 communicating with the water inlet channel 12 and a second communication port 15 communicating with the water outlet channel 13 are provided at the bottom of the cavity of the installation cavity 11. One end of the electromagnetic actuator 20 is received in the installation cavity 11, and the electromagnetic actuator 20 is configured to be able to open or close the first communication port 14 and the second communication port 15. In this embodiment, as Figure 3 shown, the axis of the water inlet channel 12 is arranged parallel to the axis of the installation cavity 11; in another alternative embodiment, as Figure 4 shown, the axis of the water inlet channel 12 is arranged at an obtuse angle to the axis of the installation cavity 11.

[0047] When the electromagnetic cut-off valve is in normal use, the electromagnetic actuator 20 opens the first communication port 14 and the second communication port 15. After the tap water enters the water inlet channel 12 through the water inlet 125, it enters the installation cavity 11 through the first communication port 14, then enters the water outlet channel 13 through the second communication port 15, and finally flows out from the water outlet 131 to supply water normally. When there is a water leakage in the system, the electromagnetic actuator 20 closes the first communication port 14 and the second communication port 15, forming a cut-off between the water inlet channel 12 and the water outlet channel 13, cutting off the water supply to prevent further damage. Combined with Figures 2 to 3 , in actual use, the electromagnetic actuator 20 is arranged upward, so the opening of the installation cavity 11 faces upward. When the opening of the installation cavity 11 faces upward, from Figure 3 and Figure 4 , it can be seen that the water inlet 125 of the water inlet channel 12 faces directly downward (as shown in Figure 3 ) or obliquely downward (as shown in Figure 4 ). Thus, the electromagnetic cut-off valve can be applicable to water inlet from below, meeting the spatial structure requirements of water inlet from below, and without using an adapter, avoiding cost increase.

[0048] As Figure 3 shows, the axes of the water outlet channel 13, the water inlet channel 12, and the installation cavity 11 are located in the same horizontal plane to facilitate the connection of each pipeline. Among them, in an optional embodiment, as Figure 3 shows, the axis of the water inlet channel 12 is parallel to the axis of the installation cavity 11, and the axis of the water outlet channel 13 is perpendicular to the axis of the installation cavity 11. With such a setting, when the opening of the installation cavity 11 faces upward, the water inlet 125 of the water inlet channel 12 faces directly downward. Thus, the water inlet 125 can be connected to the pipeline located below it, applicable to water inlet from below, meeting the spatial structure requirements of water inlet from below, and without using an adapter, avoiding cost increase.

[0049] In another optional embodiment, as Figure 4 shows, both the axis of the water inlet channel 12 and the axis of the water outlet channel 13 are arranged at an obtuse angle to the axis of the installation cavity 11, and the axis of the water inlet channel 12 is perpendicular to the axis of the water outlet channel 13. With such a setting, when the opening of the installation cavity 11 faces upward, the water inlet 125 of the water inlet channel 12 faces obliquely downward. Thus, the water inlet 125 can be connected to the pipeline located below it, also applicable to water inlet from below, meeting the spatial structure requirements of water inlet from below, and without using an adapter, avoiding cost increase.

[0050] In another optional embodiment, when the axis of the water inlet channel 12 is parallel to the axis of the installation cavity 11, the axis of the water outlet channel 13 can also be arranged at an obtuse angle to the axis of the installation cavity 11.

[0051] In another alternative embodiment, when the axis of the water inlet channel 12 is set at an obtuse angle to the axis of the installation cavity 11, the axis of the water outlet channel 13 can also be set perpendicular to the axis of the installation cavity 11.

[0052] In another alternative embodiment, the axis of the water inlet channel 12 can also coincide with the axis of the installation cavity 11. At this time, the axis of the water outlet channel 13 can be set perpendicular to or at an obtuse angle to the axis of the installation cavity 11.

[0053] In another alternative embodiment, when the axis of the water inlet channel 12 is parallel to or at an obtuse angle to the axis of the installation cavity 11, the axis of the water outlet channel 13 can also be set at an acute angle to the axis of the installation cavity 11, and no specific limitation is made here.

[0054] In this embodiment, taking the axis of the water inlet channel 12 being parallel to the axis of the installation cavity 11 as an example, as Figure 3 shown, the water inlet channel 12 includes a first channel section 121 and a second channel section 122. The second channel section 122 is connected between the first channel section 121 and the installation cavity 11. The second channel section 122 communicates with the installation cavity 11 through a first communication port 14. One end of the water outlet channel 13 intersects and connects with the second channel section 122. Combining with Figure 5 and Figure 6 , the peripheral wall of the second channel section 122 includes a connected semi-circular wall 123 and a blocking wall 124. The blocking wall 124 blocks between the second channel section 122 and the water outlet channel 13. Therefore, the blocking wall 124 can play a role in blocking between the water inlet channel 12 and the water outlet channel 13. The top end of the blocking wall 124 extends to the bottom of the installation cavity 11 and jointly encloses the first communication port 14 with the bottom of the installation cavity 11. Therefore, the top side edge of the blocking wall 124 constitutes part of the edge of the first communication port 14, and the shape of the blocking wall 124 determines the shape of the first communication port 14.

[0055] Specifically, as Figure 6 shown, the side of the blocking wall 124 close to the water outlet channel 13 is a plane 1241, and the side of the blocking wall 124 close to the second channel section 122 is an arc convex surface 1242. Thus, by setting the arc convex surface 1242, the formed first communication port 14 is similar to the Figure 5 long arc-shaped structure in, and the cross-sectional shape of the formed second channel section 122 is similar to the Figure 6 semicircular structure with a curved side in, while the cross-sectional shapes of the first channel section 121 and the water outlet channel 13 are both circular. By setting such a blocking wall 124, it can not only play a role in blocking between the water inlet channel 12 and the water outlet channel 13, but also increase the area of the first communication port 14, and can also increase the wall thickness of the blocking wall 124 to ensure the structural strength and not be easily deformed. At the same time, compared with the irregular second channel section 122, this shape of the second channel section 122 is easier to process.

[0056] Furthermore, define the cross-sectional area of the first channel section 121 as S1 and the cross-sectional area of the first communication port 14 as S2. By providing the above-described partition wall 124, S2≥S1 / 3, thereby increasing the area of the first communication port 14, and further increasing the flow rate of the first communication port 14 to meet the large flow rate requirement.

[0057] In another alternative embodiment, as Figure 7 and Figure 8 shown, the cross-sectional shapes of the first channel section 121 and the second channel section 122 may both be circular, but the first channel section 121 and the second channel section 122 are eccentrically arranged. Thus, the formed first communication port 14 is similar to the Figure 7 shown semi-circular structure. In another alternative embodiment, as Figures 9 to 11 shown, the cross-sectional shape of the first channel section 121 is circular, and the cross-sectional shape of the second channel section 122 may be polygonal, such as the Figure 11 hexagon in Figure 9 . Thus, the formed first communication port 14 is similar to the

[0058] polygonal structure in Figure 3 . Of course, the cross-sectional shape of the second channel section 122 may also be other polygons such as a pentagon or an octagon, which are not specifically limited herein.

[0059] In an alternative embodiment, as

[0060] shown, a quick-connect structure 16 is provided at the inlet end of the water inlet channel 12. The quick-connect structure 16 at this inlet end is specifically a groove and protrusion structure provided on the outer sidewall of the water inlet channel 12, which can achieve quick-connect fitting when connected to an external pipeline, facilitating installation and maintenance. Figure 3 shown, the outlet end of the water outlet channel 13 is also provided with a quick-connect structure 16. The quick-connect structure 16 at this outlet end is specifically a slot structure provided on the outer sidewall of the water outlet channel 13. When an external pipeline is inserted into the outlet end of the water outlet channel 13, an axial retaining ring is inserted into the slot to achieve quick-connect fitting between the external pipeline and the outlet end, facilitating installation and maintenance. Figure 2As shown, when one of the water outlets 131 is in use, the other water outlet 131 can be blocked by a plug 17. In other embodiments, the water outlet passage 13 may further have three water outlets 131. Based on the two water outlets 131, a water outlet 131 arranged upward can be added. Figure 3 On the basis of the two water outlets 131, a water outlet 131 arranged upward can be added.

[0061] In an alternative embodiment, in combination with Figure 2 and Figure 12 , the electromagnetic actuator 20 includes an electromagnetic coil 21, a bottom plate 22, a moving iron core 23, a stationary iron core 24, an elastic member 25, a permanent magnet 26, and a sealing assembly 27: An inner hole 2111 penetrating axially is formed in the electromagnetic coil 21. The bottom plate 22 is arranged at the bottom of the electromagnetic coil 21 and is connected to the valve body 10. The moving iron core 23 and the stationary iron core 24 are both arranged in the inner hole 2111. The moving iron core 23 is located at one axial end of the stationary iron core 24 and penetrates through the bottom plate 22 and extends into the installation cavity 11. The moving iron core 23 can move relative to the stationary iron core 24. An elastic member 25 is arranged between the moving iron core 23 and the stationary iron core 24. The permanent magnet 26 is sleeved outside the moving iron core 23 and abuts between the electromagnetic coil 21 and the bottom plate 22. The sealing assembly 27 is arranged in the installation cavity 11 and is connected to one end of the moving iron core 23 away from the stationary iron core 24. The sealing assembly 27 is used to open or close the first communication port 14 and the second communication port 15. Among them, the elastic member 25 can be selected as a return spring, and the return spring can apply a thrust force to the moving iron core 23 in a direction away from the stationary iron core 24.

[0062] When the electromagnetic coil 21 is energized in the forward direction, the magnetic field lines of the permanent magnet 26 are in the same direction as those of the electromagnetic coil 21. That is, the magnetic field directions generated by the electromagnetic coil 21 and the permanent magnet 26 are the same, and the two magnetic fields are superimposed, strengthening the magnetic field between the moving iron core 23 and the static iron core 24. After the static iron core 24 is magnetized, a magnetic suction force is generated, causing the moving iron core 23 to overcome the elastic force of the elastic member 25 and move towards the static iron core 24 and engage with it. At this time, the moving iron core 23 drives the sealing assembly 27 to move upward to open the first communication port 14 and the second communication port 15, forming a connection between the water inlet channel 12 and the water outlet channel 13, and normal water supply can be carried out. When the electromagnetic coil 21 is powered off, under the magnetic field of the permanent magnet 26, the magnetic suction force generated by the magnetization of the static iron core 24 is still greater than the elastic force of the elastic member 25, and the moving iron core 23 still remains engaged with the static iron core 24. When a water leak occurs in the system, the electromagnetic coil 21 is energized in the negative direction, and the magnetic field lines of the permanent magnet 26 are opposite to those of the electromagnetic coil 21. That is, the magnetic field directions generated by the electromagnetic coil 21 and the permanent magnet 26 are opposite, which will cancel out the magnetic force generated by the permanent magnet 26. Under the elastic force of the elastic member 25, the moving iron core 23 is pushed to move and disengage from the static iron core 24. At this time, the moving iron core 23 drives the sealing assembly 27 to move downward to seal and close the first communication port 14 and the second communication port 15, forming a cut-off between the water inlet channel 12 and the water outlet channel 13 to cut off the water source supply.

[0063] Therefore, in actual use, when it is necessary to open the electromagnetic cut-off valve, the forward power can be first applied. After the valve opening is stable, the electromagnetic coil 21 can be directly powered off. Relying on the magnetic force of the permanent magnet 26, the moving iron core 23 still remains engaged with the static iron core 24, and the electromagnetic cut-off valve still remains in the open state. Thus, it can be seen that the electromagnetic actuator 20 only needs to instantaneously energize the electromagnetic coil 21 when switching the flow path. During the operation of the electromagnetic actuator 20, it is not necessary to continuously supply power to the electromagnetic coil 21 to keep it in a stable state, achieving effective energy conservation and avoiding the problem of performance failure of the electromagnetic cut-off valve caused by long-term power-on, improving the reliability and service life of the electromagnetic cut-off valve.

[0064] Specifically, as Figure 2 shown, the sealing assembly 27 includes a sealing seat 271 and a sealing gasket 272. The sealing seat 271 is connected to the moving iron core 23, and the sealing gasket 272 is disposed in a fitting manner on the bottom surface of the sealing seat 271 for blocking the first communication port 14 and the second communication port 15. The sealing gasket 272 can be selected as a rubber material and can achieve a good sealing effect through extrusion deformation.

[0065] In an optional embodiment, as Figure 2 and Figure 12As shown, the electromagnetic actuator 20 further includes a fixed seat 28. The fixed seat 28 is a cylindrical thin-walled structure, specifically including a first seat body 281 and a second seat body 282. The first seat body 281 extends into the inner hole 2111. The moving iron core 23 and the static iron core 24 are accommodated in the first seat body 281. The moving iron core 23 can move up and down in the first seat body 281 to guide the movement of the moving iron core 23. The upper surface of the second seat body 282 abuts against the lower side of the bottom plate 22. The second seat body 282 extends into the installation cavity 11 and is connected to the edge of the sealing gasket 272.

[0066] As Figure 12 shown, a sealing ring 241 is provided between the static iron core 24 and the first seat body 281. With the above arrangement, by jointly squeezing the sealing ring 241 by the first seat body 281 and the static iron core 24, it can play a waterproof role and ensure the sealing performance of the electromagnetic actuator 20.

[0067] Furthermore, as Figure 12 shown, a sealing groove 242 is formed on the circumferential side wall of the static iron core 24, and the sealing ring 241 is accommodated in the sealing groove 242. The sealing groove 242 provides an installation space for the sealing ring 241 and at the same time ensures good sealing performance.

[0068] In an alternative embodiment, as Figure 12 shown, a first stepped groove 243 is provided on the circumferential side of the static iron core 24. The bottom of the first stepped groove 243 can abut against the first seat body 281 to ensure the axial positioning of the static iron core 24, thereby ensuring the relative position stability between the static iron core 24 and the first seat body 281.

[0069] In an alternative embodiment, as Figure 1 and Figure 12 shown, the electromagnetic actuator 20 further includes a bracket 29. The bracket 29 is embedded at the top of the electromagnetic coil 21. The top end of the static iron core 24 passes through the bracket 29 and is fixedly connected to the bracket 29. Among them, the connection method includes but is not limited to forms such as welding and riveting. Thus, the stability of the static iron core 24 can be ensured, and the overall structure compactness of the electromagnetic actuator 20 can be ensured.

[0070] In an alternative embodiment, as Figure 12 shown, a second stepped groove 244 is further provided on the circumferential side wall of the static iron core 24. When the top end of the static iron core 24 passes through the bracket 29, the bottom of the second stepped groove 244 can abut against the bottom surface of the bracket 29 to further ensure the axial positioning of the static iron core 24, thereby ensuring the relative position stability between the static iron core 24 and the bracket 29.

[0071] As Figure 1As shown, the bracket 29 is an inverted U-shaped structure. The bracket 29 is connected to the bottom plate 22 and surrounds the outside of the electromagnetic coil 21. In an alternative embodiment, the bracket 29 and the bottom plate 22 can be integrally formed, reducing the cost of part production, saving the assembly process between multiple parts, and being more firm and durable in structure. In other alternative embodiments, the bracket 29 and the bottom plate 22 can also be connected by forms such as welding, riveting, and screw connection, and no specific limitation is made here.

[0072] Combined with Figure 12 , the electromagnetic coil 21 includes a bobbin 211, an enameled wire 213, a housing 214, and two inserts 212. An inner hole 2111 is formed in the bobbin 211. The two inserts 212 are spaced apart on the bobbin 211. The enameled wire 213 is wound around the bobbin 211. The two free ends of the enameled wire 213 are respectively connected to the corresponding inserts 212. The housing 214 covers the outside of the bobbin 211 and the enameled wire 213. Part of the insert 212 protrudes outside the housing 214, so that the exposed insert 212 can be more conveniently connected to external devices. The cross-sectional shape of the bobbin 211 is configured to be similar to an "I"-shaped structure. In this way, after the enameled wire 213 is wound around the middle position of the bobbin 211, the axial movement of the enameled wire 213 can be restricted by the two ends of the bobbin 211, playing a role in positioning the enameled wire 213. The housing 214 can be a coated resin shell formed by an injection molding process, so as to ensure the tightness of the coating of the bobbin 211 and the enameled wire 213, and thus ensure good insulation effect.

[0073] In an alternative embodiment, as Figure 12 shown, the side of the housing 214 extends downward to the bottom plate 22 to form an extension section 215. A receiving groove 216 is defined between the extension section 215 and the bottom of the housing 214. The permanent magnet 26 is embedded in the receiving groove 216 and supported on the upper side of the bottom plate 22. After the permanent magnet 26 is embedded in the receiving groove 216, the extension section 215 provides radial limitation for the permanent magnet 26, and the bottom surface of the housing 214 and the bottom plate 22 jointly provide axial limitation for the permanent magnet 26, thus ensuring the stability of the relative position of the permanent magnet 26 and making the overall structure of the electromagnetic actuator 20 more compact.

[0074] Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Solenoid cut-off valve, characterized in that: include: A valve body (10), wherein a mounting cavity (11) and a water inlet channel (12) and a water outlet channel (13) connected to the same axial end of the mounting cavity (11) are provided in the valve body (10), a first communication port (14) is provided between the water inlet channel (12) and the mounting cavity (11), and a second communication port (15) is provided between the water outlet channel (13) and the mounting cavity (11); An electromagnetic actuator (20) has one end accommodated in the installation cavity (11), and the electromagnetic actuator (20) is configured to be able to open or close the first communication port (14) and the second communication port (15).

2. The electromagnetic shut-off valve according to claim 1, characterized in that: The water inlet channel (12) comprises a first channel section (121) and a second channel section (122); the second channel section (122) is connected between the first channel section (121) and the installation cavity (11); the second channel section (122) and the installation cavity (11) are connected via the first communication port (14); one end of the water outlet channel (13) intersects and connects with the second channel section (122); The peripheral wall of the second channel section (122) comprises a semicircular wall (123) and a barrier wall (124) connected to each other, wherein the barrier wall (124) blocks the second channel section (122) and the water outlet channel (13), and one end of the barrier wall (124) extends to the bottom of the installation cavity (11) and together with the bottom of the installation cavity (11) encloses the first communication port (14).

3. The electromagnetic shut-off valve according to claim 2, characterized in that: The side of the barrier wall (124) close to the water outlet channel (13) is a plane (1241), and the side of the barrier wall (124) close to the second channel section (122) is an arc-shaped convex surface (1242).

4. The electromagnetic shut-off valve according to claim 3, characterized in that: The cross-sectional area of ​​the first channel section (121) is S1, and the cross-sectional area of ​​the first communication port (14) is S2, where S2 ≥ S1 / 3.

5. The electromagnetic shut-off valve according to any one of claims 1 to 4, characterized in that: The inlet end of the water inlet channel (12) is provided with a quick-plug connection structure (16); and / or the outlet end of the water outlet channel (13) is provided with a quick-plug connection structure (16).

6. The electromagnetic shut-off valve according to any one of claims 1 to 4, characterized in that: The water outlet channel (13) has at least two water outlets (131), and the directions of the water outlets (131) are different.

7. The electromagnetic shut-off valve according to any one of claims 1 to 4, characterized in that: The axis of the water inlet channel (12) is parallel to the axis of the installation cavity (11), and the axis of the water outlet channel (13) is perpendicular to the axis of the installation cavity (11); or, The axis of the water inlet channel (12) and the axis of the water outlet channel (13) are both arranged at an obtuse angle to the axis of the installation cavity (11).

8. The electromagnetic shut-off valve according to any one of claims 1 to 4, characterized in that: The electromagnetic actuator (20) comprises: The electromagnetic coil (21) is provided with an inner hole (2111) penetrating along its axial direction; A bottom plate (22) is arranged at the bottom of the electromagnetic coil (21) and connected to the valve body (10); The moving iron core (23) and the static iron core (24) are both arranged in the inner hole (2111); the moving iron core (23) is located at one axial end of the static iron core (24) and penetrates the bottom plate (22) and extends into the installation cavity (11); the moving iron core (23) can move relative to the static iron core (24); and an elastic member (25) is provided between the moving iron core (23) and the static iron core (24); A permanent magnet (26) is sleeved outside the moving iron core (23) and abuts between the electromagnetic coil (21) and the bottom plate (22); A sealing component (27) is disposed in the installation cavity (11) and connected to one end of the moving iron core (23) away from the static iron core (24), and the sealing component (27) is used to open or close the first connecting port (14) and the second connecting port (15).

9. The electromagnetic shut-off valve according to claim 8, characterized in that: The electromagnetic actuator (20) also includes a fixed seat (28), and the fixed seat (28) includes a first seat body (281) and a second seat body (282), the first seat body (281) extends into the inner hole (2111), the moving iron core (23) and the static iron core (24) are accommodated in the first seat body (281), and the second seat body (282) extends into the installation cavity (11) and is connected to the edge of the sealing assembly (27).

10. The electromagnetic shut-off valve according to claim 9, characterized in that: A sealing ring (241) is provided between the static iron core (24) and the first seat body (281).

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