Electromagnetic valve assembly and control valve assembly having the same

Abstract

The coil (42) is wound around the fixed holder (41). A second flow passage is provided in the fixed holder (41) so as to extend along the height direction of the fixed holder (41) and penetrate the fixed holder (41). The fixed core (30) is attached in the second flow passage. At least a part of the fixed core (30) protrudes upward from the second flow passage. The fixed core (30) has a length extending in the height direction of the fixed core (30). a flow path (30a) extending along the second flow passage and penetrating the fixed core (30), a sleeve (46) is attached within the second flow passage, one end of the sleeve (46) is connected to the fixed core (30) and the other end of the sleeve (46) is provided so as to protrude downward from the second flow passage, a valve port is provided at the other end of the sleeve (46), and a movable core (43) is movably provided within the sleeve (46), and has a first initial state for closing the valve port and a first open state for opening the valve port, and a control valve assembly having the same. This solenoid valve assembly can solve the technical problem that the volume of solenoid valve assemblies in the prior art is too large.

Description

Technical Field

[0001] This application claims the priority of a patent application filed with the China National Intellectual Property Administration on May 25, 2021, with an application number of 202110574283.0 and an application title of "Solenoid Valve Assembly and Control Valve Assembly Having the Same".

[0002] This application relates to the technical field of solenoid valve structures, and specifically, to a solenoid valve assembly and a control valve assembly having the same.

Background Art

[0003] Currently, the solenoid valve assembly in the prior art generally includes a magnetic induction frame, a valve seat, a movable iron core, a fixed iron core, a coil, and a coil bobbin. The coil is wound around the coil bobbin. The movable iron core and the fixed iron core are installed in the valve chamber of the valve seat, and the valve seat is fixed to the magnetic induction frame. Also, since the movable range of the movable iron core in the prior art is generally between the mounting bottom plate and the mounting top plate of the magnetic induction frame, the solenoid valve in the prior art often has a horizontally thick structure, which increases the overall volume of the solenoid valve assembly and is disadvantageous for the miniaturization design of the solenoid valve assembly.

Summary of the Invention

[0004] The main objective of this application is to provide a solenoid valve assembly and a control valve assembly having the same to solve the technical problem that the volume of the solenoid valve assembly in the prior art is too large.

[0005] To achieve the above object, based on one aspect of the present application, there is provided a solenoid valve assembly including a fixed holder and a coil, a fixed core, a sleeve, and a movable core. The coil is wound around the fixed holder. Inside the fixed holder, a second flow passage is provided which extends along the height direction of the fixed holder and penetrates the fixed holder. The fixed core is mounted inside the second flow passage, and at least a part of the fixed core protrudes upward from the second flow passage. The fixed core is provided with a flow passage which extends along the height direction of the fixed core and penetrates the fixed core. The sleeve is mounted inside the second flow passage, one end of the sleeve is connected to the fixed core, and the other end of the sleeve protrudes downward from the second flow passage. A valve port is provided at the other end of the sleeve. The movable core is movably provided inside the sleeve and has a first initial state for closing the valve port and a first open state for opening the valve port.

[0006] Furthermore, one end of the sleeve away from the fixed core is a tapered end, and the flow area of the tapered end gradually decreases along the direction away from the fixed core, and the port of the tapered end forms the valve port.

[0007] Furthermore, the solenoid valve assembly further includes an extension pipe which has a tapered casing segment and a straight casing segment connected to each other. The tapered casing segment is fitted to the tapered end, and the straight casing segment extends in the direction away from the sleeve.

[0008] Furthermore, the sleeve has a straight pipe segment structure, one end of the sleeve is fitted to the fixed core, and the solenoid valve assembly further includes a valve seat which is mounted at the other end of the sleeve and has a trumpet-shaped port at the end, and the trumpet-shaped port forms the valve port.

[0009] Furthermore, the solenoid valve assembly further includes an extension pipe which includes a first pipe segment and a second pipe segment connected to each other. The first pipe segment is fitted to the sleeve, the second pipe segment extends in the direction away from the sleeve, and the flow area of the second pipe segment is smaller than the flow area of the first pipe segment.

[0010] Furthermore, a sealing member is provided at one end close to the valve port of the movable iron core, and when the movable iron core is in the first initial state, the valve port is sealed by the sealing member.

[0011] Furthermore, the solenoid valve assembly further includes a first return spring, a third flow passage is provided in the movable iron core, the movable iron core includes a main body segment and a reduced-diameter segment, the main body segment conforms to the shape of the second flow passage, the inflow end of the third flow passage is located at an end close to the fixed iron core of the main body segment, the outflow end of the third flow passage is located on the side wall away from the fixed iron core of the main body segment, the first return spring is provided in the third flow passage, the reduced-diameter segment is connected to the main body segment, and the sealing member is attached to the reduced-diameter segment.

[0012] Furthermore, the third flow passage includes a first flow path and a second flow path, the first flow path extends along the axial direction of the main body segment, and the second flow path extends along the radial direction of the main body segment.

[0013] Furthermore, the solenoid valve assembly further includes a sealing member, an attachment groove is provided in the reduced-diameter segment, and the sealing member is attached to the attachment groove.

[0014] Furthermore, the solenoid valve assembly further includes a magnetic induction frame, the magnetic induction frame is engaged outside the coil, the other end of the sleeve protrudes downward from the magnetic induction frame, and the magnetic induction frame is welded to the sleeve.

[0015] Furthermore, an anti-rotation hole is provided in the magnetic induction frame, an anti-rotation segment is provided in the fixed iron core, and the anti-rotation segment is engaged with the anti-rotation hole.

[0016] Furthermore, the magnetic induction frame includes a mounting top plate and a mounting bottom plate. The anti-rotation hole is provided on the mounting top plate, and a mounting hole is provided on the mounting bottom plate. The mounting hole is provided opposite to the anti-rotation hole. The cross-sectional area of the mounting hole is larger than that of the anti-rotation hole. The fixed iron core includes a first connection segment, an anti-rotation segment, and a second connection segment connected in sequence. The outer diameter of the first connection segment is larger than that of the second connection segment. The first connection segment is connected to the sleeve. The outer diameter of the second connection segment is larger than that of the anti-rotation segment. The second connection segment is removably connected to the member to be connected. The first connection segment is fixed to the magnetic induction frame. The cross-sectional area of the mounting hole is larger than that of the first connection segment. The cross-sectional area of the anti-rotation hole is larger than that of the second connection segment but smaller than that of the first connection segment. The solenoid valve assembly further includes an engaging member. After the sleeve is inserted into the mounting hole and the fixed iron core is inserted into the mounting hole and the anti-rotation hole, the engaging member is engaged with the anti-rotation segment.

[0017] According to another aspect of the present application, there is provided a control valve assembly including a cover and a solenoid valve assembly. The cover has a liquid inlet, a liquid outlet, and a first flow passage. The liquid inlet and the liquid outlet are respectively communicated with the first flow passage. The cover has a first connection structure for connecting to the bottle mouth of the bottle. The liquid inlet is used for communicating with the bottle mouth. The solenoid valve assembly is the solenoid valve assembly provided above. The second flow passage of the solenoid valve assembly is communicated with the liquid outlet.

[0018] When the technical solution of the present application is applied, by providing a sleeve and protruding the sleeve downward from the second flow passage, according to actual needs, only by changing the height of the sleeve, the moving range of the movable iron core and the structure of the movable iron core can be changed. Without the need to change other structures and without affecting the overall height and width dimensions of the solenoid valve assembly, the occupied volume of the solenoid valve assembly can be easily reduced. Therefore, the technical problem that the volume of the solenoid valve assembly in the prior art is too large can be solved by the technical solution provided by the present application.

Brief Description of the Drawings

[0019] The drawings of the specification constituting a part of the present application are for providing a further understanding of the present application. The schematic embodiments and their descriptions of the present application are for interpreting the present application and do not improperly limit the present application.

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

[0021] Here, the following reference numerals are included in the above drawings. 10 Cover, 10a Liquid inlet, 10b Liquid outlet, 10c First connection structure, 10d Air supply passage, 10e Second connection structure, 11 Upper casing, 111 First communication hole, 112 Air supply column, 12 Lower casing, 121 Second communication hole, 20 One-way valve assembly, 21 Valve core, 22 Second return spring, 30 Fixed iron core, 30a Flow path, 31 First connection segment, 32 Anti-rotation segment, 33 Second connection segment, 40 Solenoid valve assembly, 40a Valve port, 41 Fixed holder, 42 Coil, 43 Movable iron core, 431 Third flow passage, 432 Body segment, 433 Reduced-diameter segment, 44 First return spring, 45 Magnetic induction frame, 451 Anti-rotation hole, 452 Mounting hole, 453 Mounting top plate, 454 Mounting bottom plate, 46 Sleeve, 47 Extension pipe, 471 Taper casing segment, 472 Straight casing segment, 473 First pipe segment, 474 Second pipe segment, 48 Valve seat, 50 Sealing member, 60 Bottle, 70 Airway pipe, 80 Engaging member.

Embodiments for Carrying Out the Invention

[0022] It should be noted that, as long as there is no contradiction, the embodiments in the present application and the features in the embodiments can be combined with each other. Hereinafter, the present application will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0023] As shown in FIGS. 1 to 11, the embodiment of the present application includes a fixed holder 41, a coil 42, a fixed core 30, a sleeve 46, and a movable core 43. The coil 42 is wound around the fixed holder 41. Inside the fixed holder 41, a second flow passage is provided that extends along the height direction of the fixed holder 41 and penetrates the fixed holder 41, providing a solenoid valve assembly 40. The fixed core 30 is mounted inside the second flow passage, and at least a part of the fixed core 30 protrudes upward from the second flow passage. A flow passage 30a is provided in the fixed core 30 that extends along the height direction of the fixed core 30 and penetrates the fixed core 30. The sleeve 46 is mounted inside the second flow passage. One end of the sleeve 46 is connected to the fixed core 30, and the other end of the sleeve 46 protrudes downward from the second flow passage. A valve port 40a is provided at the other end of the sleeve 46. The movable core 43 is movably provided inside the sleeve 46 and has a first initial state of closing the valve port 40a and a first open state of opening the valve port 40a.

[0024] When the solenoid valve assembly 40 provided by this embodiment is used, by providing the sleeve 46 and protruding the sleeve 46 downward from the second flow passage, according to actual needs, only by changing the height of the sleeve 46, the movement range of the movable core 43 and the structure of the movable core 43 can be changed. Not only is it not necessary to change other structures, but it also does not affect the overall height and width dimensions of the solenoid valve assembly 40. Therefore, the occupied volume of the solenoid valve assembly 40 can be easily reduced. Accordingly, the solenoid valve assembly 40 provided by this embodiment can solve the technical problem that the volume of the solenoid valve assembly 40 in the prior art is too large.

[0025] Specifically, the sleeve 46 in this embodiment is made of a metal material. Using such a structure setting makes it easy to improve the magnetic induction performance and reduce magnetic leakage.

[0026] As shown in FIG. 1, in the first embodiment, a tapered casing is provided at one end of the sleeve 46 away from the fixed core 30. The flow area of the tapered casing gradually decreases along the extending direction from one end of the sleeve 46 to the other end of the sleeve 46, and the end of the tapered casing away from the fixed core 30 has a valve port 40a. With such a structural setting, the flow velocity of the liquid at the valve port 40a can be easily increased, and at the same time, the tapered casing structure is simple and easy to manufacture.

[0027] Specifically, one end of the sleeve 46 away from the fixed core 30 is a tapered end. The flow area of the tapered end gradually decreases along the direction away from the fixed core 30, and the port of the tapered end forms a valve port 40a.

[0028] As shown in FIG. 2, the second embodiment of the present application provides a solenoid valve assembly 40. The solenoid valve assembly 40 in the second embodiment is an improvement based on the solenoid valve assembly 40 in the first embodiment. The solenoid valve assembly 40 in this embodiment further includes an extension pipe 47. The extension pipe 47 has a tapered casing segment 471 and a straight casing segment 472 connected to each other. The tapered casing segment 471 is fitted to the tapered end, and the straight casing segment 472 extends in a direction away from the sleeve 46. With such a structural setting, not only can it be easily guided by the extension pipe 47, but also the connection of the extension pipe 47 to other structures becomes easier.

[0029] As shown in FIG. 3, Embodiment 3 of the present application provides a solenoid valve assembly 40. The solenoid valve assembly 40 in this embodiment is distinguished from the solenoid valve assembly 40 in Embodiment 1 in that the structure of the sleeve 46 is different. The sleeve 46 in this embodiment has a straight tube segment structure, and one end of the sleeve 46 is fitted to the fixed iron core 30. The solenoid valve assembly 40 further includes a valve seat 48. The valve seat 48 is attached to the other end of the sleeve 46 and has a trumpet-shaped opening at the end, and the trumpet-shaped opening forms a valve port 40a. Using such a structural setting can not only facilitate installation and removal, but also facilitate an increase in the flow rate of the liquid at the valve port 40a.

[0030] As shown in FIG. 6, Embodiment 4 of the present application provides a solenoid valve assembly 40. The solenoid valve assembly 40 in this embodiment is an improvement based on the solenoid valve assembly 40 in Embodiment 3. The solenoid valve assembly 40 in this embodiment further includes an extension tube 47. The extension tube 47 includes a first tube segment 473 and a second tube segment 474 connected to each other. The first tube segment 473 is fitted to the sleeve 46, and the second tube segment 474 extends in a direction away from the sleeve 46. The flow area of the second tube segment 474 is smaller than the flow area of the first tube segment 473. Using such a structural setting can not only easily increase the flow rate of the liquid at the valve port 40a and easily guide the flow direction of the liquid by the extension tube 47, but also facilitate the connection of the extension tube 47 with other structures.

[0031] In all of the above embodiments, a sealing member 50 is provided at one end of the movable iron core 43 close to the valve port 40a. When the movable iron core 43 is in the first initial state, the valve port 40a is sealed by the sealing member 50. Using such a structural setting can easily reduce the leakage of the liquid.

[0032] In all of the above embodiments, the solenoid valve assembly 40 further includes a first return spring 44. A third flow passage 431 is provided in the movable iron core 43. The movable iron core 43 includes a main body segment 432 and a reduced-diameter segment 433. The main body segment 432 conforms to the shape of the second flow passage. The inflow end of the third flow passage 431 is located at an end of the main body segment 432 close to the fixed iron core 30, and the outflow end of the third flow passage 431 is located on the side wall of the main body segment 432 away from the fixed iron core 30. The first return spring 44 is provided in the third flow passage 431. The reduced-diameter segment 433 is connected to the main body segment 432, and the sealing member 50 is attached to the reduced-diameter segment 433. By using the above structure, the compactness of the structure is improved, and the layout of the internal structure is optimized.

[0033] In all of the above embodiments, the third flow passage 431 includes a first flow path and a second flow path. The first flow path extends along the axial direction of the main body segment 432, and the second flow path extends along the radial direction of the main body segment 432. By using such a structure setting, the outflow amount of the liquid at the valve port 40a can be easily controlled.

[0034] In all of the above embodiments, the solenoid valve assembly 40 in this embodiment further includes a sealing member 50. An attachment groove is provided in the reduced-diameter segment 433, and the sealing member 50 is attached to the attachment groove. By using such a structure setting, the compactness of the internal structure is improved, and the sealing performance is also improved.

[0035] In all of the above embodiments, the solenoid valve assembly 40 further includes a magnetic induction frame 45. The magnetic induction frame 45 is engaged outside the coil 42. The other end of the sleeve 46 protrudes downward from the magnetic induction frame 45, and the magnetic induction frame 45 is welded to the sleeve 46. By using such a structure setting, the structure becomes compact, and the connection of the internal structure becomes reliable.

[0036] In all of the above embodiments, the magnetic induction frame 45 is provided with an anti-rotation hole 451, and the fixed iron core 30 is provided with an anti-rotation segment 32. Using such a structural setting, it is possible to easily and effectively perform the role of preventing rotation with respect to the fixed iron core 30, and the installation stability of the fixed iron core 30 is improved.

[0037] In all of the above embodiments, the magnetic induction frame 45 includes a mounting top plate 453 and a mounting bottom plate 454. The anti-rotation hole 451 is provided on the mounting top plate 453, and the mounting hole 452 is provided on the mounting bottom plate 454. The mounting hole 452 is provided opposite to the anti-rotation hole 451, and the cross-sectional area of the mounting hole 452 is larger than the cross-sectional area of the anti-rotation hole 451. The fixed iron core 30 includes a first connection segment 31, an anti-rotation segment 32, and a second connection segment 33 that are connected in sequence. The outer diameter of the first connection segment 31 is larger than the maximum outer diameter of the second connection segment 33. The first connection segment 31 is connected to the sleeve 46, and the sleeve 46 is fitted to the first connection segment 31. The outer diameter of the second connection segment 33 is larger than the width of the anti-rotation segment 32. The second connection segment 33 is removably connected to the member to be connected, and the first connection segment 31 is fixed to the magnetic induction frame 45. The cross-sectional area of the mounting hole 452 is larger than the cross-sectional area of the first connection segment 31. The cross-sectional area of the anti-rotation hole 451 is larger than the cross-sectional area of the second connection segment 33 but smaller than the cross-sectional area of the first connection segment 31. Here, the solenoid valve assembly 40 further includes an engaging member 80. After the sleeve 46 is inserted into the mounting hole 452 and the fixed iron core 30 is inserted into the mounting hole 452 and the anti-rotation hole 451, the engaging member 80 is engaged with the anti-rotation segment 32. With such a structural setting, when installing, after inserting the fixed iron core 30 into the mounting hole 452, inserting it into the second mounting hole 452, and then engaging the engaging member 80 with the anti-rotation segment 32, the installation stability of the fixed iron core 30 is improved, and the operating stability of the solenoid valve assembly 40 is also improved. A milling groove is provided on the first connection segment 31, and the milling groove can prevent the fixed iron core 30 from coming out of the anti-rotation hole 451. The engaging member 80 can prevent the fixed iron core 30 from falling out of the anti-rotation hole 451.

[0038] Specifically, the engaging member 80 may be an engaging plate or an engaging rib, and an engaging groove may be provided on either the engaging plate or the engaging rib. The engaging member 80 is fitted to the outside of the anti-rotation segment 32 by the engaging groove.

[0039] Example 5 of the present application includes a cover 10 and a solenoid valve assembly 40. The cover 10 has a liquid inlet 10a, a liquid outlet 10b, and a first flow passage. The liquid inlet 10a and the liquid outlet 10b are respectively communicated with the first flow passage. The cover 10 has a first connection structure 10c connected to the mouth of the bottle 60, and the liquid inlet 10a is used to communicate with the mouth of the bottle, providing a control valve assembly. The solenoid valve assembly 40 is the solenoid valve assembly 40 provided by all the above embodiments, and the second flow passage of the solenoid valve assembly 40 is communicated with the liquid outlet 10b.

[0040] When using the control valve assembly provided by this embodiment, the outflow of the liquid in the bottle 60 can be easily controlled by the solenoid valve assembly 40, and the operation becomes easier. The bottle 60 in this embodiment is mainly an essential oil bottle, and the essential oil is contained in the essential oil bottle.

[0041] In this embodiment, a one-way valve assembly 20 may be further provided on the cover 10. Thereby, when the bottle 60 is turned upside down, the liquid in the bottle can be prevented from flowing out, and the operation becomes easier. The one-way valve assembly 20 has a second initial state for closing the mouth of the bottle and a second open state for opening the mouth of the bottle. The liquid (mainly essential oil) in the bottle can flow out smoothly only when the one-way valve assembly 20 is in the first open state and the solenoid valve assembly 40 is in the second open state. Specifically, the one-way valve assembly 20 includes a valve core 21 and a second return spring 22.

[0042] In this embodiment, the cover 10 may be of an integral structure or a separable structure. The cover 10 in FIG. 8 is of an integral structure. The covers 10 shown in FIGS. 9 to 11 are of a separable structure. The cover 10 is divided into an upper casing 11 and a lower casing 12. The upper casing 11 and the lower casing 12 are removably connected. The upper casing 11 is used for removably connecting to the bottle mouth of the bottle 60, and the lower casing 12 is used for removably connecting to the fixed core 30 of the solenoid valve. A one-way valve assembly 20 is provided between the upper casing 11 and the lower casing 12. Specifically, a first connection structure 10c is provided on the upper casing 11, and a second connection structure 10e is provided on the lower casing 12. Both the first connection structure 10c and the second connection structure 10e may be screw structures. A first communication hole 111 and an air supply column 112 are provided on the upper casing 11. An air supply passage 10d is provided in the air supply column 112. The first communication hole 111 and the air supply passage 10d are provided at intervals. A second communication hole 121 is provided on the lower casing 12. The first communication hole 111 and the second communication hole 121 are provided opposite to each other and communicate with each other to form a first communication passage. The air supply passage 10d communicates with the bottom of the bottle 60 to easily keep the air pressure in the bottle consistent with the external air pressure and make it easier for the liquid in the bottle to flow out smoothly. In order to supply air better into the bottle 60, an airway tube 70 is fitted into the air supply column 112.

[0043] As can be seen from the above description, the above embodiments of the present application achieve the following technical effects. The solenoid valve assembly in this embodiment can realize a miniaturized design and improve the compactness of the internal structure of the solenoid valve assembly.

[0044] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise clearly indicated in the context, the singular form is also intended to include the plural form. Further, when the terms "comprising" and / or "including" are used in this specification, it should also be understood that they mean the presence of features, steps, operations, devices, assemblies and / or combinations thereof.

[0045] Unless otherwise specifically described, the relative arrangements, mathematical formulas, and numerical values of the members and steps described in these examples do not limit the scope of the present application. At the same time, for the convenience of description, it should be understood that the dimensions of each part shown in the drawings are not drawn in actual proportional relationships. For technologies, methods, and devices already known to those skilled in the art, detailed descriptions may be omitted, but if necessary, the said technologies, methods, and devices should be regarded as part of the approved specification. In all the examples shown and described herein, any specific values are merely illustrative and not intended to be limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and characters represent similar ones in the following drawings. Once a certain one is defined in one drawing, there is no need to further explain it in subsequent drawings.

[0046] In the description of the present application, the orientation or positional relationship represented by orientation terms such as "front, rear, top, bottom, left, right", "lateral direction, longitudinal direction, vertical, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationship shown in the drawings, but are only for the convenience and brevity of the description of the present application. Unless there is a contrary description, these orientation terms do not indicate and imply that the indicated device or element necessarily has a specific orientation or is configured and operated in a specific orientation. Therefore, it should not be understood as limiting the protection scope of the present application. The orientation terms "inside, outside" refer to the inside and outside with respect to the contour of each member itself.

[0047] For the sake of convenience in explanation, here, spatial relative terms such as "above...", "above...", "on the upper surface of...", "upper" etc. are used to describe the spatial positional relationship between one device or feature and other devices or features as shown in the figure. It should be understood that the spatial relative terms are intended to encompass different orientations during use or operation other than the orientation described in the figure of the device. For example, if the up and down of the device in the drawing are reversed, the device described as "above another device or structure" or "on another device or structure" will then be positioned as "below another device or structure" or "under another device or structure". Therefore, the exemplary term "above..." can include two orientations, "above..." and "below...". This device can also be positioned in other different ways (rotated by 90 degrees or positioned in other orientations) and corresponding interpretations can be made for the spatial relative explanations used here.

[0048] Furthermore, it should be noted that the use of terms such as "first", "second", etc. to limit components is only for distinguishing the corresponding components, and unless otherwise specified, the above terms have no special meaning and should not be understood as limiting the protection scope of this application.

[0049] The above are only preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, various modifications and changes are possible to this application. Any modifications, equivalent replacements, improvements, etc. made within the scope of the spirit and principle of this application should be included within the protection scope of this application.

Claims

1. including a fixed holder (41) and a coil (42), a fixed iron core (30), a sleeve (46), and a movable iron core (43); the coil (42) is wound around the fixed holder (41), and a through portion is provided in the fixed holder (41) extending along the height direction of the fixed holder (41) and penetrating the fixed holder (41); the fixed iron core (30) is mounted in the through portion, at least a part of the fixed iron core (30) is provided protruding upward from the through portion, and a flow path (30a) is provided in the fixed iron core (30) extending along the height direction of the fixed iron core (30) and penetrating the fixed iron core (30); the sleeve (46) is mounted in the through portion, one end of the sleeve (46) is connected to the fixed iron core (30), the other end of the sleeve (46) is provided protruding downward from the through portion, and a valve port is provided at the other end of the sleeve (46); the movable iron core (43) is movably provided in the sleeve (46) and has a first initial state of closing the valve port and a first open state of opening the valve port; the end of the sleeve (46) away from the fixed iron core (30) is a tapered end, the flow area of the tapered end gradually decreases along the direction away from the fixed iron core (30), and the port of the tapered end forms the valve port; further including an extension pipe (47); the extension pipe (47) has a tapered casing segment (471) and a straight casing segment (472) connected to each other, the tapered casing segment (471) is fitted to the tapered end, and the straight casing segment (472) extends in a direction away from the sleeve (46), an electromagnetic valve assembly.

2. the sleeve (46) has a straight pipe segment structure, and one end of the sleeve (46) is an electromagnetic valve assembly fitted to the fixed iron core (30), further including a valve seat (48); the valve seat (48) is attached to the other end of the sleeve (46) and has a bell mouth at the end, and the bell mouth forms the valve port, the electromagnetic valve assembly according to Claim 1.

3. further including an extension pipe (47); The extension pipe (47) includes a first pipe segment (473) and a second pipe segment (474) connected to each other. The first pipe segment (473) is fitted into the sleeve (46), the second pipe segment (474) extends in a direction away from the sleeve (46), and the flow area of the second pipe segment (474) is smaller than the flow area of the first pipe segment (473). The solenoid valve assembly according to claim 2.

4. A sealing member (50) is provided at one end of the movable iron core (43) close to the valve port. When the movable iron core (43) is in the first initial state, the valve port is sealed by the sealing member (50). The solenoid valve assembly according to claim 1.

5. A solenoid valve assembly in which a third flow passage is provided in the movable iron core (43), further including a first return spring (44), the movable iron core (43) includes a main body segment (432) and a reduced-diameter segment (433), the main body segment (432) conforms to the shape of the through portion, the inflow end of the third flow passage is located at an end of the main body segment (432) close to the fixed iron core (30), the outflow end of the third flow passage is located on a side wall of the main body segment (432) away from the fixed iron core (30), and the first return spring (44) is provided in the third flow passage, the reduced-diameter segment (433) is connected to the main body segment (432), and the sealing member (50) is attached to the reduced-diameter segment (433). The solenoid valve assembly according to claim 4.

6. The third flow passage includes a first flow path and a second flow path. The first flow path extends along the axial direction of the main body segment (432), and the second flow path extends along the radial direction of the main body segment (432). The solenoid valve assembly according to claim 5.

7. further including a sealing member (50), and an attachment groove is provided in the reduced-diameter segment (433), and the sealing member (50) is attached to the attachment groove. The solenoid valve assembly according to claim 5.

8. further including a magnetic induction frame (45), the magnetic induction frame (45) is engaged outside the coil (42), the other end of the sleeve (46) protrudes downward from the magnetic induction frame (45), and the magnetic induction frame (45) is welded to the sleeve (46). The solenoid valve assembly according to claim 1.

9. The electromagnetic valve assembly is provided with an anti-rotation hole (451) in the magnetic induction frame (45), and an anti-rotation segment (32) is provided in the fixed iron core (30), The magnetic induction frame (45) includes a mounting top plate (453) and a mounting bottom plate (454), The anti-rotation hole (451) is provided in the mounting top plate (453), Mounting holes (452) are provided in the mounting bottom plate (454). The mounting holes (452) are provided opposite to the anti-rotation holes (451). The cross-sectional area of the mounting holes (452) is larger than the cross-sectional area of the anti-rotation holes (451). The fixed iron core (30) includes a first connection segment (31), the anti-rotation segment (32), and a second connection segment (33) connected in sequence. The outer diameter of the first connection segment (31) is larger than the outer diameter of the second connection segment (33). The first connection segment (31) is connected to the sleeve (46). The outer diameter of the second connection segment (33) is larger than the width of the anti-rotation segment (32). The second connection segment (33) is removably connected to a member to be connected. The first connection segment (31) is fixed to the magnetic induction frame (45). The cross-sectional area of the mounting holes (452) is larger than the cross-sectional area of the first connection segment (31). The cross-sectional area of the anti-rotation holes (451) is larger than the cross-sectional area of the second connection segment (33), but smaller than the cross-sectional area of the first connection segment (31). The electromagnetic valve assembly further includes an engaging member (80). After the sleeve (46) is inserted into the mounting holes (452) and the fixed iron core (30) is inserted into the mounting holes (452) and the anti-rotation holes (451), the engaging member (80) is engaged with the anti-rotation segment (32). The electromagnetic valve assembly according to claim 8.

10. It includes a cover (10) and an electromagnetic valve assembly, The cover (10) has a liquid inlet (10a), a liquid outlet (10b), and a first flow passage. The liquid inlet (10a) and the liquid outlet (10b) are respectively communicated with the first flow passage. The cover (10) has a first connection structure (10c) connected to the bottle mouth of the bottle. The liquid inlet (10a) is used to communicate with the bottle mouth. The solenoid valve assembly is the solenoid valve assembly according to any one of claims 1 to 9, and a through portion of the solenoid valve assembly communicates with the liquid outlet (10b), a control valve assembly.

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