An electromagnetic valve

Abstract

The utility model relates to control element technical field especially relates to a kind of solenoid valves, including fixed assembly and valve core;Fixed assembly is equipped with flow main path, and flow main path includes the first main path and the second main path of intercommunication, fixed assembly is equipped with the first communicating hole that is connected to the first main path far from the second main path one end, fixed assembly is equipped with the second communicating hole that is connected to the inner wall of first main path, first communicating hole and the second communicating hole between being equipped with sealing area;Valve core is slidably arranged in flow main path, and the outer wall of valve core is equipped with sealing part, sealing part sealing connection is in the inner wall of first main path, and it is between the second communicating hole and the second main path, the end surface of valve core is equipped with the third communicating hole, and valve core is equipped with the fourth communicating hole, and the fourth communicating hole is connected in the second main path and third communicating hole.The utility model solenoid valve, the pressure difference produced by fluid valve core is smaller, so that the volume of solenoid valve is smaller, compactness is better, and the energy consumption of solenoid valve is reduced.

Description

Technical Field

[0001] This utility model relates to the field of control element technology, and in particular to a solenoid valve. Background Technology

[0002] Solenoid valves are key actuators in fluid control systems. They use electromagnets to drive the valve core to move axially, thereby switching the flow channels within the valve body on or off or controlling the flow direction. Currently, in solenoid valves, a flow channel is located within the valve body. The outer wall of the valve core can move within this flow channel and is sealed to it. When fluid passes through the flow channel within the valve body, it only acts on one end face of the valve core, resulting in a significant pressure difference between the fluid and the valve core. This causes the valve core to move unevenly or even become stuck. To ensure that the valve core can overcome this pressure difference and smoothly complete the switching action, a higher-power electromagnet is needed to provide sufficient driving force. However, this results in the electromagnet having more coil turns and a larger iron core volume, leading not only to a larger and more bulky solenoid valve but also to increased energy consumption. Utility Model Content

[0003] The purpose of this invention is to provide a solenoid valve that solves the technical problem of a significant pressure difference between the fluid and the valve core, which leads to a large size, bulky structure, and increased energy consumption in the solenoid valve.

[0004] To achieve the above objectives, this utility model provides a solenoid valve, comprising: A fixing component is provided with a main flow channel extending in a first direction. The main flow channel includes a first main channel and a second main channel that are connected to each other. A first connecting hole is provided on one side of the fixing component, which is connected to the end of the first main channel away from the second main channel. A second connecting hole is provided on the other side of the fixing component, which is connected to the inner peripheral wall of the first main channel. A sealing area is provided between the first connecting hole and the second connecting hole. A valve core is slidably disposed within the main flow channel along a first direction so that the valve core can be sealed and connected to the sealing area. The outer peripheral wall of the valve core is provided with a sealing part, which is sealed and connected to the inner peripheral wall of the first main channel and located between the second connecting hole and the second main channel. The end face of the valve core facing the first connecting hole is provided with a third connecting hole, and the outer surface of the valve core is provided with a fourth connecting hole, which connects the second main channel and the third connecting hole.

[0005] Optionally, the outer periphery of the valve core located between the sealing part and the first connecting hole has a constant diameter structure.

[0006] Optionally, the fixing component includes a magnetic sleeve, a stop block, and a valve sleeve. The magnetic sleeve is sleeved on the outside of the stop block and the valve sleeve, the valve sleeve is disposed on one side of the stop block along the first direction, and the first connecting hole and the second connecting hole are disposed in the valve sleeve. It also includes a connecting rod and a moving iron core. The valve core includes a sealing section and a connecting section connected sequentially from the first connecting hole to the main flow channel. The connecting rod and the moving iron core are sequentially connected to the end of the connecting section away from the sealing section. The sealing part is provided on the outer wall of the sealing section. The fourth connecting hole is provided on the outer peripheral wall of the connecting section. The connecting rod passes through the stop block. The connecting section and the moving iron core are respectively located on both sides of the stop block along the first direction. At least a portion of the stop block is provided corresponding to the connecting section and the moving iron core, so that when the valve core moves along one side of the first direction, the stop block can abut against the connecting section, and when the valve core moves along the other side of the first direction, the stop block can abut against the moving iron core.

[0007] Optionally, it also includes a first spring, wherein the outer wall of the connecting section is provided with a first protrusion, the inner peripheral wall of the valve sleeve is provided with a second protrusion, and the first spring is sleeved on the outer side of the connecting section and located between the first protrusion and the second protrusion.

[0008] Optionally, the fixing component includes a magnetic sleeve and a valve sleeve, the magnetic sleeve being sleeved on the outside of the valve sleeve, and the first connecting hole and the second connecting hole being located in the valve sleeve; It also includes a moving iron core, which is located at the end of the valve core away from the first connecting hole. The moving iron core is provided with a fifth connecting hole that runs through the first direction. The outer wall of the moving iron core is slidably connected to the inner peripheral wall of the second main channel. The third connecting hole and the fourth connecting hole are respectively located at both ends of the valve core. The third connecting hole, the fourth connecting hole and the fifth connecting hole are correspondingly arranged.

[0009] Optionally, the moving iron core has a connecting groove on its outer peripheral wall facing the valve core, which communicates with the fourth connecting hole. The two side walls of the connecting groove are provided with snap-fit ​​blocks. The valve core has a connecting part on its side facing the moving iron core. The two sides of the connecting part are provided with snap-fit ​​grooves. The connecting part extends into the connecting groove. The snap-fit ​​blocks snap into the snap-fit ​​grooves so that the connecting part is connected to the moving iron core. The fourth connecting hole passes through the connecting part, and its two ends are respectively connected to the third connecting hole and the connecting groove.

[0010] Optionally, the outer wall of the valve core is provided with a connecting groove that communicates with the third connecting hole, and the connecting groove communicates with the end face of the valve core away from the first connecting hole. It also includes a second spring, and the end of the second main channel away from the first main channel is provided with a reset hole. The second spring is at least partially disposed in the reset hole, and the two ends of the second spring are respectively connected to the bottom of the reset hole and the end face of the moving iron core away from the valve core.

[0011] Optionally, the outer diameter of the portion of the valve core located between the sealing part and the first connecting hole is larger than the outer diameter of the first connecting hole.

[0012] Optionally, a chamfer is provided at the junction of the second connecting hole and the first main channel near the first connecting hole, the sealing area is provided in the chamfer, and a groove is provided on the end face of the valve core near the first connecting hole, the groove having an inclined groove wall connected to the outer edge of the end of the valve core.

[0013] Optionally, a plane perpendicular to the first direction is designated as the first plane, and the chamfered portion and the first plane have a first included angle α, where 1° < the first included angle α < 45°, and the inclined groove wall and the first plane have a first included angle β, where 0° < the second included angle β < 45°.

[0014] Compared with the prior art, the electromagnetic valve implemented in this utility model has the following advantages: In this solenoid valve, the fixed assembly has a main flow channel extending in a first direction, which accommodates the valve core and fluid. The main flow channel includes a first main channel and a second main channel that are connected. The two outer surfaces of the fixed assembly each have a first connecting hole leading to the end of the first main channel away from the second main channel and a second connecting hole leading to the inner peripheral wall of the main flow channel. A sealing area is provided between the first and second connecting holes, allowing the valve core to move to a first position that blocks the first and second connecting holes. At this position, one end of the valve core is sealed to the sealing area. The valve core can also move to a second position where the first and second connecting holes are connected, at which point the valve core is disengaged from the sealing area. Furthermore, the end face of the valve core facing the first connecting hole has a third connecting hole. The valve core has a fourth connecting hole on its outer surface, which communicates with the third connecting hole. This allows fluid to flow through the third and fourth connecting holes to both sides of the sealing portion, regardless of whether the valve core is moved to the first or second position. The fluid fills the gap between the first and second main channels and the valve core, contacting each side of the valve core relative to the first direction. This applies nearly equal pressure to both sides of the valve core along the first direction, reducing the pressure difference generated by the fluid. Furthermore, the outer peripheral wall of the valve core has a sealing portion that is sealed to the main flow channel and located between the second connecting hole and the second main channel. This prevents fluid from passing through the gap between the valve core and the main flow channel when the valve core is in the first position, thus connecting the first and second connecting holes. In summary, the solenoid valve of this invention exhibits a smaller pressure difference generated by the fluid valve core, eliminating the need for excessive coil turns or a large iron core. This results in a smaller, more compact solenoid valve with reduced energy consumption. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the solenoid valve in Embodiment 1 of this utility model.

[0016] Figure 2 This is a cross-sectional view of the solenoid valve in Embodiment 2 of this utility model.

[0017] Figure 3 This is a partial schematic diagram of the sealing area when the valve core of this utility model is in the first position.

[0018] Figure 4 This is a partial schematic diagram of the sealing area when the valve core of this utility model is in the second position.

[0019] Reference numerals: 1. Fixing component; 11. Main flow channel; 111. Sealing area; 112. First main channel; 113. Second main channel; 12. First connecting hole; 13. Second connecting hole; 14. Magnetic sleeve; 15. Stop block; 16. Valve sleeve; 17. Second protrusion; 18. Reset hole; 19. Chamfered part; 2. Valve core; 21. Sealing part; 22a. Third connecting hole; 22b. Fourth connecting hole; 23. Sealing section; 24. Connecting section; 25. First protrusion; 26. Connecting part; 27. Groove; 271. Sloping groove wall; 231. Connecting groove; 3. First spring; 4. Second spring; 5. Connecting rod; 6. Moving iron core; 61. Connecting groove; 62. Snap-fit ​​block; 63. Through hole. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] Example 1: like Figure 1 , 3As shown in Figure 4, a solenoid valve of this utility model includes a fixing component 1 and a valve core 2. The fixing component 1 has a flow main channel 11 extending along a first direction. The flow main channel 11 includes a first main channel 112 and a second main channel 113 that are connected to each other. A first connecting hole 12 is provided on one side of the fixing component 1, which is connected to the end of the first main channel 112 away from the second main channel 113. A second connecting hole 13 is provided on the other side of the fixing component 1, which is connected to the inner peripheral wall of the first main channel 112. A sealing area is provided between the first connecting hole 12 and the second connecting hole 13. Domain 111; Valve core 2 is slidably disposed in the main flow channel 11 along the first direction so that valve core 2 can be sealed and connected to the sealing area 111. The outer peripheral wall of valve core 2 is provided with a sealing part 21, which is sealed and connected to the inner peripheral wall of the first main channel 112 and located between the second connecting hole 13 and the second main channel 113. The end face of valve core 2 facing the first connecting hole 12 is provided with a third connecting hole 22a, and the outer surface of valve core 2 is provided with a fourth connecting hole 22b, which connects the second main channel 113 and the third connecting hole 22a.

[0024] In the above technical solution, the fixing component 1 is provided with a main flow channel 11 extending along a first direction. The main flow channel 11 is used to accommodate the valve core 2 and the fluid. The main flow channel 11 includes a first main channel 112 and a second main channel 113 that are connected. The two outer sides of the fixing component 1 are respectively provided with a first connecting hole 12 that connects to the end of the first main channel 112 away from the second main channel 113 and a second connecting hole 13 that connects to the inner peripheral wall of the main flow channel 11. A sealing area 111 is provided between the first connecting hole 12 and the second connecting hole 13, so that the valve core 2 can move to a first position that blocks the first connecting hole 12 and the second connecting hole 13. At this time, one end of the valve core 2 is sealed and connected to the sealing area 111, and the valve core 2 can also move to a second position where the first connecting hole 12 and the second connecting hole 13 are connected. At this time, the valve core 2 is separated from the sealing area 111. Furthermore, the end face of the valve core 2 facing the first connecting hole 12 is provided with a third... The valve core 2 has a connecting hole 22a and a fourth connecting hole 22b connected to the third connecting hole 22a. This allows fluid to flow through the third connecting hole 22a and the fourth connecting hole 22b to both sides of the sealing part 21, regardless of whether the valve core 2 moves to the first position or the second position. This fluid fills the gap between the first main channel 112 and the second main channel 113 and the valve core 2, and contacts each side of the valve core 2 relative to the first direction. This applies nearly the same pressure to both sides of the valve core 2 along the first direction, thereby reducing the pressure difference generated by the fluid on the valve core 2. Furthermore, the outer peripheral wall of the valve core 2 is provided with a sealing part 21, which is sealed to the main flow channel 11. The sealing part 21 is located between the second connecting hole 13 and the second main channel 113 to prevent fluid from passing through the gap between the valve core 2 and the main flow channel 11 when the valve core 2 is in the first position, thus connecting the first connecting hole 12 and the second connecting hole 13. In summary, in the solenoid valve of this utility model, the pressure difference generated by the fluid valve core 2 is small, so there is no need to specially wind too many coil turns or set a large iron core, which makes the solenoid valve smaller in size, more compact in structure, and reduces the energy consumption of the solenoid valve.

[0025] Furthermore, the outer periphery of the portion of the valve core 2 located between the sealing part 21 and the first connecting hole 12 has a constant diameter structure to avoid the fluid exerting additional pressure on the valve core 2 at that location.

[0026] Furthermore, the fixing assembly 1 includes a magnetic sleeve 14, a stop block 15, and a valve sleeve 16. The magnetic sleeve 14 is sleeved on the outside of the stop block 15 and the valve sleeve 16. The valve sleeve 16 is located on one side of the stop block 15 along the first direction. The first connecting hole 12 and the second connecting hole 13 are located in the valve sleeve 16. It also includes a connecting rod 5 and a moving iron core 6. The valve core 2 includes a sealing section 23 and a connecting section 24 connected sequentially from the first connecting hole 12 to the main flow channel 11. The connecting rod 5 and the moving iron core 6 are sequentially connected to the connecting section 24 away from the sealing section 23. At one end of 3, a sealing part 21 is provided on the outer wall of the sealing section 23, a fourth connecting hole 22b is provided on the outer peripheral wall of the connecting section 24, a connecting rod 5 passes through the stop block 15, the connecting section 24 and the moving iron core 6 are respectively located on both sides of the stop block 15 along the first direction, at least a part of the stop block 15 is provided corresponding to the connecting section 24 and the moving iron core 6, so that when the valve core 2 moves along one side of the first direction, the stop block 15 can abut against the connecting section 24, and when the valve core 2 moves along the other side of the first direction, the stop block 15 can abut against the moving iron core 6.

[0027] This structure allows the first connecting hole 12, the third connecting hole 22a, the fourth connecting hole 22b, the gap between the outer wall of the connecting section 24 and the inner peripheral wall of the second main channel 113, the gap between the outer wall of the connecting rod 5 and the inner peripheral wall of the second main channel 113, the gap between the outer wall of the moving iron core 6 and the inner peripheral wall of the second main channel 113, and the space between the end face of the moving iron core 6 away from the connecting rod 5 and the bottom end of the second main channel 113 to be connected in sequence, so that fluid can flow in the aforementioned spaces.

[0028] Additionally, the sealing section 23 is used to provide the sealing part 21 and is sealed to the sealing area 111 by abutting against it; the connecting section 24 is provided with a fourth connecting hole 22b to allow lateral flow of fluid; the stop block 15, the connecting section 24, and the moving iron core 6 form a bidirectional limit to limit the movement stroke of the valve core 2 and prevent the valve core 2 from moving beyond its travel, which could lead to sealing failure or structural damage; the magnetic sleeve 14 can be provided as a stationary iron core corresponding to the moving iron core 6, and when the solenoid valve is energized, the magnetic sleeve 14 applies a force to the moving iron core 6 in the direction of the first connecting hole 12; the sealing section 23 can be slidably connected to the main flow channel 11; the main flow channel 11 can be formed by the magnetic sleeve 14, the stop block 15, and the valve sleeve 16.

[0029] Furthermore, the outer wall of the moving iron core 6 is slidably connected to the inner peripheral wall of the second main channel 113, and the moving iron core 6 is provided with a through hole 63 extending along the first direction.

[0030] Specifically, by reducing the gap between the outer wall of the moving iron core 6 and the inner peripheral wall of the second main channel 113, the moving iron core 6 is slidably connected to the second main channel 113, so as to ensure that the moving iron core 6 can move smoothly along the first direction and prevent the moving iron core 6 from shifting and causing jamming. The through hole 63 is used to ensure that fluid can flow on both sides of the moving iron core 6.

[0031] Furthermore, it also includes a first spring 3, the outer wall of the connecting section 24 is provided with a first protrusion 25, the inner peripheral wall of the valve sleeve 16 is provided with a second protrusion 17, and the first spring 3 is sleeved on the outer side of the connecting section 24 and located between the first protrusion 25 and the second protrusion 17.

[0032] The first spring 3 is used to apply a force to the valve core 2 away from the first connecting hole 12. When the solenoid valve is de-energized, this force can push the valve core 2 to move along the first direction and reset. Furthermore, the first spring 3 is sleeved on the outside of the connecting section 24 and is not set on the side of the moving iron core 6 away from the first connecting hole 12, which can reduce the length of the solenoid valve along the first direction and improve the compactness of the solenoid valve structure.

[0033] In addition, the outer wall of the connecting section 24 is provided with a receiving groove, and a retaining ring protruding from the outer wall of the connecting section 24 is provided in the receiving groove to form a first protrusion 25.

[0034] Furthermore, the outer diameter of the portion of the valve core 2 located between the sealing portion 21 and the first connecting hole 12 is larger than the outer diameter of the first connecting hole 12. This allows the valve core 2 to apply a force along the first direction to the sealing area 111 when it moves toward the first connecting hole 12 and seals with the sealing area 111, ensuring the reliability of the sealing connection. When the valve core 2 moves away from the first connecting hole 12, the valve core 2 and the sealing area 111 can quickly separate, and a large gap capable of allowing fluid flow is quickly formed at the sealing area 111, ensuring the response speed and flow capacity of the solenoid valve.

[0035] Furthermore, refer to Figure 3 and Figure 4 The second connecting hole 13 and the first main channel 112 are provided with a chamfered part 19 near the first connecting hole 12. The sealing area 111 is provided in the chamfered part 19. The end face of the valve core 2 near the first connecting hole 12 is provided with a groove 27. The groove 27 is provided with an inclined groove wall 271 of the outer edge of the end of the valve core 2.

[0036] When the outer edge of the valve core 2 abuts against the sealing area 111 on the chamfered portion 19, the valve core 2 and the chamfered portion 19 are in line contact and sealed together, and the inclined groove wall 271 and the chamfered portion 19 form a V-shaped angle. If a plane perpendicular to the first direction is provided in the sealing area 111, the inclined groove wall 271 is located on one side of the plane along the first direction, and at least a part of the chamfered portion 19 is located on the other side of the plane along the first direction. When the valve core 2 and the sealing area 111 are separated, the fluid can flow quickly from the second connecting hole 13 to the first connecting hole 12 along the chamfered portion 19. Since the valve core 2 has a groove 27 at its end and its inclined groove wall 271 is connected to the outer edge of the end, the valve core 2 does not have a very small obstruction effect on the fluid, so that the fluid flows between the valve core 2 and the sealing area 111 at a relatively fast speed, thereby enabling the fluid to flow quickly from the second connecting hole 13 to the first connecting hole 12.

[0037] Furthermore, refer to Figure 3 and Figure 4 A plane perpendicular to the first direction is designated as the first plane. The chamfered portion 19 and the first plane have a first included angle α, where 1° < the first included angle α < 45°. The inclined groove wall 271 and the first plane have a first included angle β, where 0° < the second included angle β < 45°.

[0038] The first included angle α is within a certain range to prevent the valve core 2 from being too large, which would make it difficult for it to abut against the chamfered part 19; the second included angle β is within a certain range to prevent the end of the valve core 2 from being too sharp, thus preventing damage to the chamfered part 19 when it abuts against the sealing area 111.

[0039] Furthermore, it also includes a coil wound around the outside of the magnetic sleeve 14.

[0040] Furthermore, fixed setting and fixed connection refer to the fixed relative positional relationship of two components, including but not limited to fixing by connectors, fixing by welding, fixing by adhesive, fixing by integral molding, and fixing by snap-fit ​​connection.

[0041] Furthermore, sliding connection and sliding setting refer to the connection between two connected components, where one component can slide along a fixed trajectory on the other component, including but not limited to connection by sliding a slider into a groove, or connection by inserting a slider into a hole whose size and profile match the slider.

[0042] Furthermore, the connectors include, but are not limited to, fasteners, straps, ropes, pneumatic connectors, hydraulic connectors, flanges, Velcro, and buttons.

[0043] Example 2: like Figures 2 to 4As shown, a solenoid valve of this utility model includes a fixing component 1 and a valve core 2. The fixing component 1 has a flow main channel 11 extending along a first direction. The flow main channel 11 includes a first main channel 112 and a second main channel 113 that are connected to each other. A first connecting hole 12 is provided on one side of the fixing component 1, which connects to the end of the first main channel 112 away from the second main channel 113. A second connecting hole 13 is provided on the other side of the fixing component 1, which connects to the inner peripheral wall of the first main channel 112. A sealing area is provided between the first connecting hole 12 and the second connecting hole 13. 111; Valve core 2 is slidably disposed in the main flow channel 11 along the first direction so that valve core 2 can be sealed and connected to the sealing area 111. The outer peripheral wall of valve core 2 is provided with a sealing part 21, which is sealed and connected to the inner peripheral wall of the first main channel 112 and located between the second connecting hole 13 and the second main channel 113. The end face of valve core 2 facing the first connecting hole 12 is provided with a third connecting hole 22a, and the outer surface of valve core 2 is provided with a fourth connecting hole 22b, which connects the second main channel 113 and the third connecting hole 22a.

[0044] In the above technical solution, the fixing component 1 is provided with a main flow channel 11 extending along a first direction. The main flow channel 11 is used to accommodate the valve core 2 and the fluid. The main flow channel 11 includes a first main channel 112 and a second main channel 113 that are connected. The two outer sides of the fixing component 1 are respectively provided with a first connecting hole 12 that connects to the end of the first main channel 112 away from the second main channel 113 and a second connecting hole 13 that connects to the inner peripheral wall of the main flow channel 11. A sealing area 111 is provided between the first connecting hole 12 and the second connecting hole 13, so that the valve core 2 can move to a first position that blocks the first connecting hole 12 and the second connecting hole 13. At this time, one end of the valve core 2 is sealed and connected to the sealing area 111, and the valve core 2 can also move to a second position where the first connecting hole 12 and the second connecting hole 13 are connected. At this time, the valve core 2 is separated from the sealing area 111. Furthermore, the end face of the valve core 2 facing the first connecting hole 12 is provided with a third... The valve core 2 has a connecting hole 22a and a fourth connecting hole 22b connected to the third connecting hole 22a. This allows fluid to flow through the third connecting hole 22a and the fourth connecting hole 22b to both sides of the sealing part 21, regardless of whether the valve core 2 moves to the first position or the second position. This fluid fills the gap between the first main channel 112 and the second main channel 113 and the valve core 2, and contacts each side of the valve core 2 relative to the first direction. This applies nearly the same pressure to both sides of the valve core 2 along the first direction, thereby reducing the pressure difference generated by the fluid on the valve core 2. Furthermore, the outer peripheral wall of the valve core 2 is provided with a sealing part 21, which is sealed to the main flow channel 11. The sealing part 21 is located between the second connecting hole 13 and the second main channel 113 to prevent fluid from passing through the gap between the valve core 2 and the main flow channel 11 when the valve core 2 is in the first position, thus connecting the first connecting hole 12 and the second connecting hole 13. In summary, in the solenoid valve of this utility model, the pressure difference generated by the fluid valve core 2 is small, so there is no need to specially wind too many coil turns or set a large iron core, which makes the solenoid valve smaller in size, more compact in structure, and reduces the energy consumption of the solenoid valve.

[0045] Furthermore, the outer periphery of the portion of the valve core 2 located between the sealing part 21 and the first connecting hole 12 has a constant diameter structure to avoid the fluid exerting additional pressure on the valve core 2 at that location.

[0046] Furthermore, the fixing component 1 includes a magnetic sleeve 14 and a valve sleeve 16. The magnetic sleeve 14 is sleeved on the outside of the valve sleeve 16, and the first connecting hole 12 and the second connecting hole 13 are provided on the valve sleeve 16. It also includes a moving iron core 6, which is provided at the end of the valve core 2 away from the first connecting hole 12. The moving iron core 6 is provided with a fifth connecting hole 64 that runs through the first direction. The outer wall of the moving iron core 6 is slidably connected to the inner peripheral wall of the second main channel 113. The third connecting hole 22a and the fourth connecting hole (22b) are respectively provided at both ends of the valve core 2, and the third connecting hole 22a, the fourth connecting hole 22b and the fifth connecting hole 64 are correspondingly provided.

[0047] This structure allows the space between the first connecting hole 12, the third connecting hole 22a, the fourth connecting hole 22b, the end face of the moving iron core 6 away from the connecting rod 5, and the bottom end of the main flow channel 11 to be connected in sequence, so that fluid can flow in the aforementioned spaces.

[0048] In addition, the sealing section 23 is used to set the sealing part 21 and is sealed to the sealing area 111 by abutting against the sealing area 111; the magnetic sleeve 14 can be set as a stationary iron core corresponding to the moving iron core 6. When the solenoid valve is energized, the magnetic sleeve 14 applies a force to the moving iron core 6 in the direction of the first connecting hole 12; the main flow channel 11 can be formed by the magnetic sleeve 14 and the valve sleeve 16.

[0049] Furthermore, the moving iron core 6 has a connecting groove 61 on the outer peripheral wall of the valve core 2 that communicates with the fourth connecting hole 22b. The two sides of the connecting groove 61 have snap-fit ​​blocks 62. The valve core 2 has a connecting part 26 on the side facing the moving iron core 6. The two sides of the connecting part 26 have snap-fit ​​grooves. The connecting part 26 extends into the connecting groove 61. The snap-fit ​​blocks 62 snap into the snap-fit ​​grooves so that the connecting part 26 is connected to the moving iron core 6. The fourth connecting hole 22b passes through the connecting part 26, and its two ends are respectively connected to the third connecting hole 22a and the connecting groove 61.

[0050] The sealing section 23 is connected to the moving iron core 6 through a snap-fit ​​structure (the snap-fit ​​block 62 is inserted into the snap-fit ​​groove) to facilitate the disassembly and assembly of the sealing section 23 and the moving iron core 6, and to facilitate later maintenance.

[0051] In addition, the connecting groove 61 passes through the moving iron core 6 in a direction that can be perpendicular to the first direction, so that the connecting part 26 can be inserted into the connecting groove 61 from the side.

[0052] Furthermore, the outer wall of the valve core 2 is provided with a connecting groove 28 that connects to the third connecting hole 22a, and the connecting groove 28 connects to the end face of the valve core 2 away from the first connecting hole 12.

[0053] The connecting groove 28 can widen the flow path of fluid moving from one side of the sealing section 23 to the other side of the sealing part 21, further ensuring the pressure uniformity on both sides of the sealing part 21 and avoiding valve core 2 jamming caused by local pressure imbalance. Specifically, the connecting groove 28 can be connected to the snap-fit ​​groove and the connecting groove 61 in sequence. The connecting groove 28 can also be connected to the gap between the moving iron core 6 and the main flow channel 11 and the connecting groove 61 in sequence.

[0054] Furthermore, it also includes a second spring 4. The end of the second main channel 113 away from the first main channel 112 is provided with a reset hole 18. The second spring 4 is at least partially disposed in the reset hole 18. The two ends of the second spring 4 are respectively connected to the bottom of the reset hole 18 and the end face of the moving iron core 6 away from the valve core 2.

[0055] The second spring 4 is used to apply a force away from the first connecting hole 12 to the valve core 2. When the solenoid valve is de-energized, this force can push the valve core 2 to move along the first direction and reset. Furthermore, the second spring 4 is sleeved in the reset hole 18, which can reduce the length of the solenoid valve along the first direction to improve the compactness of the solenoid valve structure.

[0056] Furthermore, the outer diameter of the portion of the valve core 2 located between the sealing portion 21 and the first connecting hole 12 is larger than the outer diameter of the first connecting hole 12. This allows the valve core 2 to apply a force along the first direction to the sealing area 111 when it moves toward the first connecting hole 12 and seals with the sealing area 111, ensuring the reliability of the sealing connection. When the valve core 2 moves away from the first connecting hole 12, the valve core 2 and the sealing area 111 can quickly separate, and a large gap capable of allowing fluid flow is quickly formed at the sealing area 111, ensuring the response speed and flow capacity of the solenoid valve.

[0057] Furthermore, refer to Figure 3 and Figure 4 The second connecting hole 13 and the first main channel 112 are provided with a chamfered part 19 near the first connecting hole 12. The sealing area 111 is provided in the chamfered part 19. The end face of the valve core 2 near the first connecting hole 12 is provided with a groove 27. The groove 27 is provided with an inclined groove wall 271 of the outer edge of the end of the valve core 2.

[0058] When the outer edge of the valve core 2 abuts against the sealing area 111 on the chamfered portion 19, the valve core 2 and the chamfered portion 19 are in line contact and sealed together, and the inclined groove wall 271 and the chamfered portion 19 form a V-shaped angle. If a plane perpendicular to the first direction is provided in the sealing area 111, the inclined groove wall 271 is located on one side of the plane along the first direction, and at least a part of the chamfered portion 19 is located on the other side of the plane along the first direction. When the valve core 2 and the sealing area 111 are separated, the fluid can flow quickly from the second connecting hole 13 to the first connecting hole 12 along the chamfered portion 19. Since the valve core 2 has a groove 27 at its end and its inclined groove wall 271 is connected to the outer edge of the end, the valve core 2 does not have a very small obstruction effect on the fluid, so that the fluid flows between the valve core 2 and the sealing area 111 at a relatively fast speed, thereby enabling the fluid to flow quickly from the second connecting hole 13 to the first connecting hole 12.

[0059] Furthermore, refer to Figure 3 and Figure 4 A plane perpendicular to the first direction is designated as the first plane. The chamfered portion 19 and the first plane have a first included angle α, where 1° < the first included angle α < 45°. The inclined groove wall 271 and the first plane have a first included angle β, where 0° < the second included angle β < 45°.

[0060] The first included angle α is within a certain range to prevent the valve core 2 from being too large, which would make it difficult for it to abut against the chamfered part 19; the second included angle β is within a certain range to prevent the end of the valve core 2 from being too sharp, thus preventing damage to the chamfered part 19 when it abuts against the sealing area 111.

[0061] Furthermore, it also includes a coil wound around the outside of the magnetic sleeve 14.

[0062] Furthermore, fixed setting and fixed connection refer to the fixed relative positional relationship of two components, including but not limited to fixing by connectors, fixing by welding, fixing by adhesive, fixing by integral molding, and fixing by snap-fit ​​connection.

[0063] Furthermore, sliding connection and sliding setting refer to the connection between two connected components, where one component can slide along a fixed trajectory on the other component, including but not limited to connection by sliding a slider into a groove, or connection by inserting a slider into a hole whose size and profile match the slider.

[0064] Furthermore, the connectors include, but are not limited to, fasteners, straps, ropes, pneumatic connectors, hydraulic connectors, flanges, Velcro, and buttons.

[0065] In summary, this utility model embodiment provides a solenoid valve, the technical effects of which are as follows: In this solenoid valve, the fixed assembly 1 has a main flow channel 11 extending along a first direction. The main flow channel 11 is used to accommodate the valve core 2 and the fluid. The main flow channel 11 includes a first main channel 112 and a second main channel 113 that are connected. The two outer sides of the fixed assembly 1 are respectively provided with a first connecting hole 12 that connects to the end of the first main channel 112 away from the second main channel 113 and a second connecting hole 13 that connects to the inner peripheral wall of the main flow channel 11. A sealing area 111 is provided between the first connecting hole 12 and the second connecting hole 13, so that the valve core 2 can move to a first position that blocks the first connecting hole 12 and the second connecting hole 13. At this time, one end of the valve core 2 is sealed to the sealing area 111, and the valve core 2 can also move to a second position where the first connecting hole 12 and the second connecting hole 13 are connected. At this time, the valve core 2 is separated from the sealing area 111. Furthermore, the end face of the valve core 2 facing the first connecting hole 12 is provided with a first connecting hole 112. The valve core 2 has a three-way connecting hole 22a and a fourth connecting hole 22b connected to the third connecting hole 22a on its outer surface. This allows fluid to flow through the third connecting hole 22a and the fourth connecting hole 22b to both sides of the sealing part 21, regardless of whether the valve core 2 moves to the first position or the second position. This fluid fills the gap between the first main channel 112 and the second main channel 113 and the valve core 2, and contacts each side of the valve core 2 relative to the first direction. This applies nearly the same pressure to both sides of the valve core 2 along the first direction, thereby reducing the pressure difference generated by the fluid on the valve core 2. Furthermore, the outer peripheral wall of the valve core 2 is provided with a sealing part 21, which is sealed to the main flow channel 11. The sealing part 21 is located between the second connecting hole 13 and the second main channel 113 to prevent fluid from passing through the gap between the valve core 2 and the main flow channel 11 when the valve core 2 is in the first position, thus connecting the first connecting hole 12 and the second connecting hole 13. In summary, in the solenoid valve of this utility model, the pressure difference generated by the fluid valve core 2 is small, so there is no need to specially wind too many coil turns or set a large iron core, which makes the solenoid valve smaller in size, more compact in structure, and reduces the energy consumption of the solenoid valve.

[0066] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A solenoid valve, characterized in that, include: A fixing component (1) is provided with a main flow channel (11) extending in a first direction. The main flow channel (11) includes a first main channel (112) and a second main channel (113) that are connected. A first connecting hole (12) is provided on one side of the fixing component (1) to the end of the first main channel (112) away from the second main channel (113). A second connecting hole (13) is provided on the other side of the fixing component (1) to the inner peripheral wall of the first main channel (112). A sealing area (111) is provided between the first connecting hole (12) and the second connecting hole (13). The valve core (2) is slidably disposed in the main flow channel (11) along the first direction so that the valve core (2) can be sealed and connected to the sealing area (111). The outer peripheral wall of the valve core (2) is provided with a sealing part (21). The sealing part (21) is sealed and connected to the inner peripheral wall of the first main channel (112) and is located between the second connecting hole (13) and the second main channel (113). The end face of the valve core (2) facing the first connecting hole (12) is provided with a third connecting hole (22a). The outer surface of the valve core (2) is provided with a fourth connecting hole (22b). The fourth connecting hole (22b) is connected to the second main channel (113) and the third connecting hole (22a).

2. The solenoid valve according to claim 1, characterized in that, The outer periphery of the valve core (2) located between the sealing part (21) and the first connecting hole (12) has a constant diameter structure.

3. The solenoid valve according to claim 1, characterized in that, The fixing component (1) includes a magnetic sleeve (14), a stop (15) and a valve sleeve (16). The magnetic sleeve (14) is sleeved on the outside of the stop (15) and the valve sleeve (16). The valve sleeve (16) is located on one side of the stop (15) along the first direction. The first connecting hole (12) and the second connecting hole (13) are located in the valve sleeve (16). It also includes a connecting rod (5) and a moving iron core (6). The valve core (2) includes a sealing section (23) and a connecting section (24) connected sequentially from the first connecting hole (12) to the main flow channel (11). The connecting rod (5) and the moving iron core (6) are sequentially connected to the end of the connecting section (24) away from the sealing section (23). The sealing part (21) is provided on the outer wall of the sealing section (23). The fourth connecting hole (22b) is provided on the outer peripheral wall of the connecting section (24). The connecting rod... (5) Passing through the stop block (15), the connecting section (24) and the moving iron core (6) are respectively located on both sides of the stop block (15) along the first direction. At least a part of the stop block (15) is provided corresponding to the connecting section (24) and the moving iron core (6), so that when the valve core (2) moves along one side of the first direction, the stop block (15) can abut against the connecting section (24), and when the valve core (2) moves along the other side of the first direction, the stop block (15) can abut against the moving iron core (6).

4. The solenoid valve according to claim 3, characterized in that, It also includes a first spring (3), the outer wall of the connecting section (24) is provided with a first protrusion (25), the inner circumferential wall of the valve sleeve (16) is provided with a second protrusion (17), the first spring (3) is sleeved on the outer side of the connecting section (24) and located between the first protrusion (25) and the second protrusion (17).

5. The solenoid valve according to claim 1, characterized in that, The fixing component (1) includes a magnetic sleeve (14) and a valve sleeve (16). The magnetic sleeve (14) is sleeved on the outside of the valve sleeve (16), and the first connecting hole (12) and the second connecting hole (13) are provided in the valve sleeve (16). It also includes a moving iron core (6), which is located at one end of the valve core (2) away from the first connecting hole (12). The moving iron core (6) is provided with a fifth connecting hole (64) that runs through the first direction. The outer wall of the moving iron core (6) is slidably connected to the inner circumferential wall of the second main channel (113). The third connecting hole (22a) and the fourth connecting hole (22b) are respectively located at both ends of the valve core (2). The third connecting hole (22a), the fourth connecting hole (22b) and the fifth connecting hole (64) are correspondingly arranged.

6. The solenoid valve according to claim 5, characterized in that, The moving iron core (6) has a connecting groove (61) on its outer peripheral wall facing the valve core (2) that communicates with the fourth connecting hole (22b). The connecting groove (61) has snap-fit ​​blocks (62) on both sides of its groove wall. The valve core (2) has a connecting part (26) on its side facing the moving iron core (6). The connecting part (26) has snap-fit ​​grooves on both sides of its side. The connecting part (26) extends into the connecting groove (61). The snap-fit ​​blocks (62) snap into the snap-fit ​​grooves so that the connecting part (26) is connected to the moving iron core (6). The fourth connecting hole (22b) passes through the connecting part (26) and its two ends are respectively connected to the third connecting hole (22a) and the connecting groove (61).

7. The solenoid valve according to claim 5, characterized in that, The outer wall of the valve core (2) is provided with a connecting groove (28) that connects to the third connecting hole (22a). The connecting groove (28) connects to the end face of the valve core (2) away from the first connecting hole (12). It also includes a second spring (4), and the end of the second main channel (113) away from the first main channel (112) is provided with a reset hole (18). The second spring (4) is at least partially disposed in the reset hole (18), and the two ends of the second spring (4) are respectively connected to the bottom of the reset hole (18) and the end face of the moving iron core (6) away from the valve core (2).

8. The solenoid valve according to claim 1, characterized in that, The outer diameter of the valve core (2) located between the sealing part (21) and the first connecting hole (12) is larger than the outer diameter of the first connecting hole (12).

9. The solenoid valve according to claim 1 or 8, characterized in that, The second connecting hole (13) and the first main channel (112) are provided with a chamfered part (19) near the first connecting hole (12). The sealing area (111) is provided in the chamfered part (19). The end face of the valve core (2) near the first connecting hole (12) is provided with a groove (27). The groove (27) is provided with a sloping groove wall (271) connected to the outer edge of the end of the valve core (2).

10. The solenoid valve according to claim 9, characterized in that, A plane perpendicular to the first direction is designated as the first plane. The chamfered portion (19) and the first plane have a first included angle α, where 1° < the first included angle α < 45°. The inclined groove wall (271) and the first plane have a first included angle β, where 0° < the second included angle β < 45°.

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