Valve element structure and electromagnetic valve

Abstract

The utility model provides a valve core structure and an electromagnetic valve, which comprises a valve core main body, a valve core and a valve core, a gap between the sealing gasket and the mounting groove forms an accommodating cavity; the discharging channel is arranged between the inner wall of the mounting groove and the outer wall of the sealing gasket and communicates with the containing cavity, the discharging channel comprises an annular channel and an axial channel which communicate with each other, the annular channel is arranged around the sealing gasket in the circumferential direction, and one end of the axial channel communicates with an opening of the mounting groove; the other end of the axial channel extends to the side, facing the bottom wall of the mounting groove, of the sealing gasket. By means of the scheme, gas in the gap between the sealing gasket and the valve element body can be completely exhausted, and the problem that the sealing gasket is jacked up to deform is avoided. When the scheme is applied to the electromagnetic valve, the flow of the valve port and the normal opening of the electromagnetic valve cannot be influenced by the jacking deformation of the sealing gasket, and the performance of the electromagnetic valve is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve core structure and a solenoid valve. Background Art

[0002] Some solenoid valves feature a removable valve core with a gasket installed inside. This gasket seals and opens the valve opening. Refrigerant enters the gap between the gasket and the valve core, causing the liquid refrigerant to undergo a phase change and increase in volume. When this gap forms a sealed space, the gaseous refrigerant cannot be fully and quickly expelled from the gap. The remaining gas pushes the gasket into a bulge, causing it to deform. This bulge can affect the proper function of the solenoid valve. Utility Model Content

[0003] The utility model provides a valve core structure and a solenoid valve, which solve the problem in the prior art that the gas in the gap between the sealing gasket and the valve core body cannot be completely discharged, resulting in the sealing gasket being lifted and deformed.

[0004] In order to solve the above problems, according to one aspect of the utility model, the utility model provides a valve core structure, including: a valve core body, the valve core body having a mounting groove; a sealing gasket, connected to the valve core body, and the gap between the sealing gasket and the mounting groove constitutes an accommodating chamber; a discharge channel, arranged between the inner wall of the mounting groove and the outer wall of the sealing gasket, and the accommodating chamber is connected to the discharge channel; the discharge channel includes an annular channel and an axial channel that are connected to each other, wherein the annular channel is arranged around the circumference of the sealing gasket, one end of the axial channel is connected to the opening of the mounting groove, and the other end of the axial channel extends toward the side of the sealing gasket toward the bottom wall of the mounting groove.

[0005] Furthermore, the annular channel is an annular groove located on the peripheral wall of the installation groove, the axial channel is a linear groove located on the side wall of the sealing gasket, and the axial channel is parallel to the axis of the valve core structure.

[0006] Alternatively, the annular channel is an annular groove located on the peripheral wall of the sealing gasket, the axial channel is a linear groove located on the side wall of the sealing gasket, and the axial channel is parallel to the axis of the valve core structure.

[0007] Alternatively, the annular channel is an annular groove located on the peripheral wall of the installation groove, the axial channel is a linear groove located on the side wall of the installation groove, and the axial channel is parallel to the axis of the valve core structure.

[0008] Alternatively, the annular channel is an annular groove located on the peripheral wall of the sealing gasket, the axial channel is a linear groove located on the side wall of the mounting groove, and the axial channel is parallel to the axis of the valve core structure.

[0009] Furthermore, there are multiple axial channels, and the multiple axial channels are distributed at intervals along the circumference of the sealing gasket.

[0010] Furthermore, the plurality of axial channels are all connected to the annular channel, and there is an annular channel between each two adjacent axial channels.

[0011] Furthermore, the sealing gasket has two opposite end faces, and the annular channel and the two end faces of the sealing gasket are spaced apart; the sealing gasket is made of elastic material, the sealing gasket is located in the installation groove, and the valve core body has a riveted flange at the opening periphery of the installation groove, and the riveted flange limits the sealing gasket.

[0012] Furthermore, the valve core body has a first channel and a second channel that are interconnected. The first channel is located on the bottom wall of the mounting groove, and the second channel is located on the side of the first channel away from the sealing gasket. The opening of the first channel faces the sealing gasket, and the opening of the second channel is connected to the outside of the valve core body.

[0013] Furthermore, the valve core body is a moving iron core.

[0014] Furthermore, the sealing gasket is made of rubber.

[0015] Furthermore, the accommodating cavity includes a first gap and a second gap. The first gap is between the top of the sealing gasket and the bottom wall of the installation groove, and the second gap is between the peripheral wall of the sealing gasket and the peripheral wall of the installation groove.

[0016] The utility model also provides a solenoid valve, which includes the above-mentioned valve core structure; the solenoid valve also includes a valve seat, a valve tube, and a piston part, the valve tube and the valve seat are fixedly connected, the valve seat has a valve cavity and a first valve port; the piston part is located in the valve cavity and is slidingly and sealingly matched with the inner wall of the valve cavity, the piston part has a balancing channel, the balancing channel has a second valve port at one end away from the first valve port, and the piston part is used to open and close the first valve port; the valve core body is movably arranged in the valve tube, and the sealing gasket of the valve core body is used to open and close the second valve port.

[0017] In this solution, since the annular channel is arranged around the circumference of the sealing gasket, the annular channel can connect the inner wall of the mounting groove and the gap of the entire circumference of the sealing gasket (referred to as the circumferential gap), and the axial channel connects the gap between the bottom wall of the mounting groove and the end face of the sealing gasket (referred to as the end face gap). And since the annular channel and the axial channel are connected, the gas in the circumferential gap can enter the annular channel and be discharged through the axial channel, and the gas in the end face gap is also discharged through the axial channel, thereby avoiding the problem that the gas in the gap between the sealing gasket and the valve core body cannot be completely discharged, avoiding the sealing gasket from being lifted and deformed, and ensuring the performance of the solenoid valve.

[0018] A portion of the gap between the sealing gasket and the mounting groove corresponds to an axial channel, and this gap can be directly connected to the outside world through the axial channel. If the remaining portion of the gap between the sealing gasket and the mounting groove does not correspond to an axial channel, an annular channel can be provided correspondingly, and this gap can be indirectly connected to the axial channel through the annular channel. Therefore, the combined provision of the annular channel and the axial channel ensures that the gap between the sealing gasket and the mounting groove is connected to the outside world to the greatest extent possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic structural diagram of a valve core structure provided by an embodiment of the present utility model is shown;

[0021] Figure 2 Shown Figure 1 A cross-sectional view of the valve core structure;

[0022] Figure 3 Shown Figure 1 Schematic diagram of the sealing gasket in;

[0023] Figure 4 Shown Figure 1 A partial view of the valve core body in FIG;

[0024] Figure 5 The figure shows a schematic structural diagram of a solenoid valve provided in an embodiment of the present utility model.

[0025] The above drawings include the following reference numerals:

[0026] 10. Valve core body; 11. Mounting groove; 12. Riveted flange; 13. First channel; 14. Second channel;

[0027] 20. Sealing gasket;

[0028] 30. Exhaust channel; 31. Annular channel; 32. Axial channel;

[0029] 40. Valve seat; 41. Flow port; 42. First valve port;

[0030] 50. Valve pipe;

[0031] 60. Piston portion; 61. Damping channel; 62. Balance channel; 63. Second valve port. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way serves as any limitation on the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figures 1 to 5 As shown, an embodiment of the present invention provides a valve core structure, including: a valve core body 10, the valve core body 10 has a mounting groove 11; a sealing gasket 20, which is connected to the valve core body 10, and the gap between the sealing gasket 20 and the mounting groove 11 constitutes an accommodating cavity; a discharge channel 30, which is arranged between the inner wall of the mounting groove 11 and the outer wall of the sealing gasket 20, and the accommodating cavity is connected to the discharge channel 30; the discharge channel 30 includes an annular channel 31 and an axial channel 32 that are connected to each other, wherein the annular channel 31 is arranged around the circumference of the sealing gasket 20, one end of the axial channel 32 is connected to the opening of the mounting groove 11, and the other end of the axial channel 32 extends toward the side of the sealing gasket 20 toward the bottom wall of the mounting groove 11.

[0034] In this solution, since the annular channel 31 is arranged around the circumference of the sealing gasket 20, the annular channel 31 can connect the inner wall of the mounting groove 11 and the entire circumferential gap of the sealing gasket 20 (referred to as the circumferential gap), and the axial channel 32 connects the gap between the bottom wall of the mounting groove 11 and the end face of the sealing gasket 20 (referred to as the end face gap). And since the annular channel 31 and the axial channel 32 are connected, the gas in the circumferential gap can enter the annular channel 31 and be discharged through the axial channel 32, and the gas in the end face gap is also discharged through the axial channel 32, thereby avoiding the problem that the gas in the gap between the sealing gasket 20 and the valve core body 10 cannot be completely discharged, and avoiding the problem that the sealing gasket 20 is lifted up and deformed to occupy the valve opening space.

[0035] When this solution is applied to the solenoid valve, the sealing gasket 20 will not be deformed due to being lifted up and affecting the flow of the valve port and the normal opening of the solenoid valve, thereby ensuring the performance of the solenoid valve.

[0036] A portion of the gap between the sealing gasket 20 and the mounting groove 11 corresponds to an axial channel 32, which allows direct communication with the outside world through the axial channel 32. If the remaining portion of the gap between the sealing gasket 20 and the mounting groove 11 does not correspond to the axial channel 32, an annular channel 31 may be provided instead, indirectly communicating with the axial channel 32 through the annular channel 31. Therefore, the combined provision of the annular channel 31 and the axial channel 32 ensures that the gap between the sealing gasket 20 and the mounting groove 11 is connected to the outside world to the greatest extent possible.

[0037] like Figures 2 to 4 As shown, in a specific embodiment, the annular channel 31 is an annular groove located on the peripheral wall of the mounting groove 11, and the axial channel 32 is a linear groove located on the side wall of the sealing gasket 20, and the axial channel 32 is parallel to the axis of the valve core structure.

[0038] The annular channel 31 is configured as an annular groove located on the peripheral wall of the mounting groove 11. This configuration simplifies machining the annular groove, requiring only one rotation of the tool tip around the inner peripheral wall of the mounting groove 11. This configuration also reduces costs. The axial channel 32 is configured as a linear groove located on the side wall of the sealing gasket 20. This can be machined on the sealing gasket 20 before the sealing gasket 20 is installed in the mounting groove 11, providing ample operating space. Furthermore, the sealing gasket 20 is made of an elastic material, such as rubber, making it easy to machine. The axial channel 32 can be machined, or the sealing gasket 20 can be injection molded to directly form the axial channel 32.

[0039] In an embodiment not shown, the annular channel 31 is an annular groove located on the peripheral wall of the sealing gasket 20 , and the axial channel 32 is a linear groove located on the side wall of the sealing gasket 20 . The axial channel 32 is parallel to the axis of the valve core structure.

[0040] Alternatively, in an embodiment not shown, the annular channel 31 is an annular groove located on the peripheral wall of the mounting groove 11, and the axial channel 32 is a linear groove located on the side wall of the mounting groove 11, and the axial channel 32 is parallel to the axis of the valve core structure.

[0041] Alternatively, in an embodiment not shown, the annular channel 31 is an annular groove located on the peripheral wall of the sealing gasket 20, and the axial channel 32 is a linear groove located on the side wall of the mounting groove 11, and the axial channel 32 is parallel to the axis of the valve core structure.

[0042] That is, in this embodiment, the annular channel 31 can be provided on the side wall of the mounting groove 11 or on the side wall of the sealing gasket 20, and the axial channel 32 can be provided on the side wall of the mounting groove 11 or on the side wall of the sealing gasket 20. The above different embodiments can all achieve the discharge of gas in the gap between the sealing gasket 20 and the valve core body 10.

[0043] like Figure 3 As shown, there are multiple axial channels 32, which are spaced apart along the circumference of the sealing gasket 20. By providing multiple axial channels 32, gas can be discharged at different locations, which can more fully discharge the gas and avoid the problem of gas in the gap between the sealing gasket 20 and the valve core body 10 not being completely discharged.

[0044] The plurality of axial channels 32 are all in communication with the annular channel 31 , and there is an annular channel 31 between each two adjacent axial channels 32 .

[0045] In an embodiment not shown, the exhaust passage 30 further includes a radial passage located between the end surface of the sealing gasket 20 and the bottom wall of the mounting groove 11. The radial passage communicates with the axial passage 32. The provision of the radial passage further guides the gas located between the end surface of the sealing gasket 20 and the bottom wall of the mounting groove 11, allowing the gas to enter the axial passage 32 and be exhausted, thereby preventing the gas from being trapped between the end surface of the sealing gasket 20 and the bottom wall of the mounting groove 11 and being unable to be completely exhausted.

[0046] The radial channel can be provided on the end surface of the sealing gasket 20 or on the bottom wall of the mounting groove 11. There can be multiple radial channels, which are distributed at intervals in the circumferential direction of the sealing gasket 20.

[0047] like Figure 2 As shown, the sealing gasket 20 has two opposing end surfaces, and the annular channel 31 is spaced apart from both end surfaces of the sealing gasket 20. That is, the annular channel 31 is located in the middle region of the sealing gasket 20 in the thickness direction. This region is where gas tends to accumulate, thus facilitating gas discharge. The sealing gasket 20 is made of an elastic material, such as rubber.

[0048] The sealing gasket 20 is located in the mounting groove 11. The valve core body 10 has a riveted flange 12 at the opening periphery of the mounting groove 11. The riveted flange 12 limits the sealing gasket 20. This achieves the fixation of the sealing gasket 20. The riveting method is easy to process.

[0049] Among them, when the straight groove is located on the sealing gasket 20, the riveted flange 12 at most blocks a part of the straight groove to avoid the gas discharge being affected by the blockage; when the straight groove is located on the side wall of the mounting groove 11, the straight groove passes through the riveted flange 12, thereby avoiding the riveted flange 12 affecting the gas discharge.

[0050] like Figures 1 to 4 As shown, the valve core body 10 has a columnar structure. The valve core body 10 has a first channel 13 and a second channel 14 that are interconnected. The first channel 13 is located on the bottom wall of the mounting groove 11, and the second channel 14 is located on the side of the first channel 13 away from the sealing gasket 20. The opening of the first channel 13 faces the sealing gasket 20, and the opening of the second channel 14 communicates with the exterior of the valve core body 10. This allows refrigerant to enter the first channel 13 through the second channel 14, thereby applying pressure to the sealing gasket 20 toward the valve opening. When the sealing gasket 20 closes the valve opening, the pressure applied by the refrigerant on the sealing gasket 20 can improve the sealing effect of the valve opening.

[0051] Specifically, the valve core body 10 is a moving iron core.

[0052] The sealing gasket 20 is made of rubber.

[0053] The accommodating cavity includes a first gap and a second gap. The first gap is between the top of the sealing gasket 20 and the bottom wall of the installation groove 11 , and the second gap is between the peripheral wall of the sealing gasket 20 and the peripheral wall of the installation groove 11 .

[0054] like Figure 5 As shown, another aspect of the present invention provides a solenoid valve including the aforementioned valve core structure. The solenoid valve can be either a normally open or normally closed solenoid valve. This solution ensures that the gas in the gap between the sealing gasket 20 and the valve core body 10 is fully discharged, preventing the sealing gasket 20 from being lifted and deformed. This deformation of the sealing gasket 20 does not affect the flow rate of the valve port or the normal opening of the solenoid valve, thereby ensuring the performance of the solenoid valve.

[0055] Specifically, the solenoid valve also includes a valve seat 40, a valve tube 50, and a piston portion 60. The valve tube 50 and the valve seat 40 are fixedly connected. The valve seat 40 has a valve cavity, a flow port 41 and a first valve port 42. The flow port 41 is connected to the valve cavity; the piston portion 60 is located in the valve cavity and is slidably sealed with the inner wall of the valve cavity. The piston portion 60 has a balancing channel 62, one end of the balancing channel 62 is connected to the first valve port 42, and the end of the balancing channel 62 away from the first valve port 42 has a second valve port 63. The piston portion 60 is used to open and close the first valve port 42. When the first valve port 42 is open, the first valve port 42 is connected to the flow port 41 through the valve cavity; the valve core structure is movably arranged in the valve tube 50, and the sealing gasket 20 of the valve core structure is used to open and close the second valve port 63.

[0056] Furthermore, the piston portion 60 has a damping channel 61 and a balancing channel 62 spaced apart. One end of the damping channel 61 is connected to the flow port 41 through the valve cavity, and the opening of the other end of the damping channel 61 is located on the side of the piston portion 60 away from the first valve port 42. When the second valve port 63 is opened, the second valve port 63 is connected to the damping channel 61 through the valve cavity.

[0057] This solenoid valve is a normally closed solenoid valve. The sealing gasket 20 closes the second valve port 63, and the piston 60 closes the first valve port 42. The refrigerant pressure entering the flow port 41 is greater than the refrigerant pressure entering the first valve port 42. When the first valve port 42 needs to be opened, the valve core body 10 drives the sealing gasket 20 upward, first opening the second valve port 63. The second valve port 63 is then connected to the first valve port 42 through the balancing channel 62. Specifically, the upper area of ​​the piston 60 is connected to the second valve port 63, where the refrigerant pressure is lower. This causes the pressure in the upper area of ​​the piston 60 to drop, and the middle part of the piston 60 is subjected to an upward force from the high-pressure refrigerant. Under the pressure differential, the refrigerant pushes the piston 60 upward, thereby opening the first valve port 42. When the first valve port 42 needs to be closed, the valve core structure moves downward, first closing the second valve port 63. Under the thrust of the valve core structure and gravity, the piston 60 moves downward, thereby closing the first valve port 42.

[0058] Furthermore, the solenoid valve also includes a static iron core and a coil component. The static iron core is fixed to the valve tube 50, and the coil component is sleeved on the outside of the valve tube 50. When the coil component is energized, the static iron core generates magnetic force to attract the valve core body 10, the valve core body 10 moves upward, and the spring in the static iron core is compressed. When the coil component is de-energized, the magnetic force of the static iron core disappears, and the spring and push rod in the static iron core push the valve core body 10 to move downward. The solenoid valve also includes a limit rod, which passes through the valve core body 10. The upper end of the limit rod abuts the static iron core, and the lower end of the limit rod limits the piston part 60, thereby limiting the distance the piston part 60 moves upward. In this way, the piston part 60 can be prevented from moving upward all the time to squeeze the valve core structure, leaving room for the valve core structure to move.

[0059] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. Persons skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

[0060] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0061] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of this solution. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary, rather than limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0062] In the description of this scheme, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this scheme; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0063] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0064] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this solution.

Claims

1. A valve core structure, characterized in that: include: A valve core body (10), wherein the valve core body (10) has a mounting groove (11); A sealing gasket (20) is connected to the valve core body (10), and a gap between the sealing gasket (20) and the mounting groove (11) forms an accommodating cavity; a discharge channel (30) disposed between the inner wall of the mounting groove (11) and the outer wall of the sealing gasket (20), the accommodating cavity being in communication with the discharge channel (30); The discharge channel (30) comprises an annular channel (31) and an axial channel (32) that are interconnected, wherein the annular channel (31) is arranged around the circumference of the sealing gasket (20), one end of the axial channel (32) is connected to the opening of the mounting groove (11), and the other end of the axial channel (32) extends toward the side of the sealing gasket (20) toward the bottom wall of the mounting groove (11).

2. The valve core structure according to claim 1, characterized in that: The annular channel (31) is an annular groove located on the peripheral wall of the mounting groove (11), the axial channel (32) is a linear groove located on the side wall of the sealing gasket (20), and the axial channel (32) is parallel to the axis of the valve core structure.

3. The valve core structure according to claim 1, characterized in that: The annular channel (31) is an annular groove located on the peripheral wall of the sealing gasket (20), the axial channel (32) is a linear groove located on the side wall of the sealing gasket (20), and the axial channel (32) is parallel to the axis of the valve core structure.

4. The valve core structure according to claim 1, characterized in that: The annular channel (31) is an annular groove located on the peripheral wall of the installation groove (11), the axial channel (32) is a linear groove located on the side wall of the installation groove (11), and the axial channel (32) is parallel to the axis of the valve core structure.

5. The valve core structure according to claim 1, characterized in that: The annular channel (31) is an annular groove located on the peripheral wall of the sealing gasket (20), and the axial channel (32) is a linear groove located on the side wall of the mounting groove (11). The axial channel (32) is parallel to the axis of the valve core structure.

6. The valve core structure according to claim 1, characterized in that: There are a plurality of axial channels (32), and the plurality of axial channels (32) are distributed at intervals along the circumference of the sealing gasket (20).

7. The valve core structure according to claim 6, characterized in that: The plurality of axial channels (32) are all in communication with the annular channel (31), and an annular channel (31) is correspondingly provided between two adjacent axial channels (32).

8. The valve core structure according to claim 1, characterized in that: The sealing gasket (20) has two opposite end faces, and the annular channel (31) and the two end faces of the sealing gasket (20) are spaced apart; the sealing gasket (20) is made of elastic material, and the sealing gasket (20) is located in the installation groove (11); the valve core body (10) has a riveted flange (12) at the opening periphery of the installation groove (11), and the riveted flange (12) limits the sealing gasket (20).

9. The valve core structure according to claim 1, characterized in that: The valve core body (10) has a first channel (13) and a second channel (14) that are connected to each other, the first channel (13) is located on the bottom wall of the installation groove (11), and the second channel (14) is located on a side of the first channel (13) away from the sealing gasket (20), the opening of the first channel (13) faces the sealing gasket (20), and the opening of the second channel (14) is connected to the outside of the valve core body (10).

10. The valve core structure according to claim 1, characterized in that: The valve core body (10) is a moving iron core.

11. The valve core structure according to claim 1, characterized in that: The sealing gasket (20) is made of rubber.

12. The valve core structure according to claim 1, characterized in that: The accommodating cavity includes a first gap and a second gap, wherein the first gap is between the top of the sealing gasket (20) and the bottom wall of the mounting groove (11), and the second gap is between the peripheral wall of the sealing gasket (20) and the peripheral wall of the mounting groove (11).

13. A solenoid valve, characterized in that: The solenoid valve includes a valve core structure according to any one of claims 1 to 12; the solenoid valve also includes a valve seat (40), a valve tube (50), and a piston portion (60), the valve tube (50) and the valve seat (40) are fixedly connected, and the valve seat (40) has a valve cavity and a first valve port (42); the piston portion (60) is located in the valve cavity and is slidingly sealed with the inner wall of the valve cavity, the piston portion (60) has a balancing channel (62), and the balancing channel (62) has a second valve port (63) at one end away from the first valve port (42), and the piston portion (60) is used to open and close the first valve port (42); the valve core body (10) is movably arranged in the valve tube (50), and the sealing gasket (20) of the valve core body (10) is used to open and close the second valve port (63).

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