An electromagnetic valve

Abstract

The utility model relates to control element technical field especially relates to a kind of solenoid valves, including fixed assembly, valve core, first reset cover, second reset cover, first spring and second spring, fixed assembly is equipped with the reset cavity extending along first direction, the cavity face of reset cavity relative to one first direction is equipped as first cavity face, first reset cover, second reset cover, first spring and second spring are equipped in reset cavity, valve core is worn in reset cavity, and it is slidably connected in fixed assembly along first direction, first reset cover and first spring cover are equipped in the outside of valve core, first reset cover is connected in valve core, second reset cover and second spring are spaced cover and equipped in the outside of first spring, first spring, second reset cover is located between first reset cover and first cavity face, second spring is located between second reset cover and first cavity face, first reset cover and second reset cover are oppositely arranged.Summariing, the utility model solenoid valve can be smoothly started, and homing speed is faster, and response speed is faster.

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] A solenoid valve is an actuator that uses electromagnetic force to control the flow of fluid. Its working principle is that when energized, magnetic force is generated, which causes the stationary iron core to attract or push the moving iron core. This causes the moving iron core to move the valve core along its axis to achieve the opening and closing of the valve port. When the solenoid coil is de-energized, the valve core is driven to reset by the elastic force of the return spring, thus restoring the solenoid valve to its initial state.

[0003] Generally, solenoid valves contain a return spring for resetting. When the solenoid valve is energized, the stationary iron core applies a driving force to the moving iron core. The moving iron core and the valve core overcome the preload and elastic force of the return spring and move in a first direction. When the solenoid valve is de-energized, the return spring applies an elastic force to the valve core, causing it to reset. To increase the valve core's reset speed and the solenoid valve's response speed, the return spring force needs to be set higher. However, when starting the solenoid valve, the moving iron core and the valve core need to overcome a large preload and elastic force, making the solenoid valve difficult to start and prone to jamming. To ensure smooth start-up, the return spring force needs to be set lower, but this reduces the valve core's reset speed and the solenoid valve's response speed. Therefore, it is difficult for a typical solenoid valve to guarantee both smooth start-up and a fast response speed. Utility Model Content

[0004] The purpose of this invention is to provide a solenoid valve that solves the technical problem that ordinary solenoid valves cannot guarantee smooth start-up while also having a fast response speed.

[0005] To achieve the above objectives, this utility model provides a solenoid valve, including a fixing component, a valve core, a first reset sleeve, a second reset sleeve, a first spring, and a second spring. The fixing component has a reset cavity extending along a first direction. One cavity surface of the reset cavity relative to the first direction is designated as a first cavity surface. The first reset sleeve, the second reset sleeve, the first spring, and the second spring are disposed within the reset cavity. At least a portion of the valve core passes through the reset cavity and is slidably connected to the fixing component along the first direction. The first reset sleeve and the first spring are sleeved on the outside of the valve core, and the first reset sleeve is connected to the valve core. The second reset sleeve and the second spring are spaced apart and sleeved on the outside of the first spring. The first spring and the second reset sleeve are located between the first reset sleeve and the first cavity surface, and the second spring is located between the second reset sleeve and the first cavity surface. The first reset sleeve and the second reset sleeve are at least partially opposite each other along the first direction, so that when the first reset sleeve moves along the first direction, the first reset sleeve can abut against the second reset sleeve.

[0006] Optionally, it also includes a retaining ring, wherein the outer wall of the valve core is provided with a receiving groove, at least a portion of the retaining ring is disposed in the receiving groove and protrudes from the outer wall of the valve core, the first reset sleeve is provided with a first sleeve hole that extends along a first direction, the first sleeve hole being slidably connected to the outer wall of the valve core, and the side of the first reset sleeve away from the first cavity surface is provided with a retaining groove communicating with the first sleeve hole, the groove wall or groove bottom of the retaining groove being used to abut against the retaining ring.

[0007] Optionally, the second reset sleeve includes an abutment portion and a sliding portion connected together. The abutment portion has a second sleeve hole that extends along a first direction. The first spring passes through the second sleeve hole. The second spring is connected to the side of the abutment portion facing the first cavity surface. The sliding portion is located on the side of the abutment portion facing the first cavity surface and is sleeved on the outside of the second spring. The outer wall of the sliding portion is slidably connected to the cavity surface on the periphery of the reset cavity.

[0008] Optionally, the first cavity surface includes a first connecting surface and a second connecting surface, the second connecting surface is disposed around the first connecting surface, the first connecting surface protrudes from the second connecting surface, the first connecting surface is connected to the first spring, the second connecting surface is connected to the second spring, and the second spring is sleeved on the outside of the first connecting surface.

[0009] Optionally, the cavity wall on the outer periphery of the reset cavity is provided with a first limiting part. The first limiting part is located on the side of the first reset sleeve away from the first cavity surface. The first limiting part and the first reset sleeve are opposite to each other, so that when the first reset sleeve moves along the first direction, the first limiting part can abut against the first reset sleeve.

[0010] Optionally, the first reset sleeve has a first abutting chamfer on its outer edge facing the first limiting part, and the first limiting part has a second abutting chamfer on its inner edge facing the first reset sleeve facing the first limiting part. The first abutting chamfer and the second abutting chamfer are opposite to and adapted to each other, so that when the first reset sleeve moves along the first direction, the first abutting chamfer can abut against the second abutting chamfer.

[0011] Optionally, the cavity wall on the outer periphery of the reset cavity is provided with a second limiting part. The second limiting part is located on the side of the second reset sleeve away from the first cavity surface. The second limiting part and the second reset sleeve are opposite to each other, so that when the second reset sleeve moves along the first direction, the second limiting part can abut against and limit the second reset sleeve.

[0012] Optionally, the spring constant of the first spring is smaller than that of the second spring.

[0013] Optionally, the fixing component includes a stop block, a retaining ring, and a valve sleeve arranged sequentially along a first direction. The valve sleeve has a first through hole extending along the first direction, the retaining ring has a second through hole extending along the first direction, and the stop block has a third through hole extending along the first direction. The first through hole, the second through hole, and the third through hole are sequentially connected. The reset cavity is disposed inside the stop block and is connected to the third through hole. The valve core passes through the first through hole, the second through hole, and the third through hole and is slidably connected to the first through hole.

[0014] Optionally, the valve core has a first communicating hole on its end face near the valve sleeve. The outer wall of the valve core is provided with a first communicating groove, a second communicating groove, a third communicating groove and a fourth communicating groove in sequence from the direction away from the valve sleeve to the stop. The second communicating groove is connected to the first communicating hole. The outer wall of the valve sleeve is provided with a second communicating hole, a third communicating hole, a fourth communicating hole, a fifth communicating hole and a sixth communicating hole in sequence from the direction away from the valve sleeve to the stop. The valve core can move along the first direction to a first position and a second position. When the valve core is in the first position, the second connecting hole, the first connecting groove and the third connecting hole are connected in sequence, and the fourth connecting hole, the third connecting groove and the fifth connecting hole are connected in sequence; When the valve core is in the second position, the first connecting hole, the second connecting groove and the third connecting hole are connected in sequence, and the fifth connecting hole, the fourth connecting groove and the sixth connecting hole are connected in sequence; or, The valve core has a first connecting hole on its end face near the valve sleeve. The outer wall of the valve core has a first connecting groove, a second connecting groove, a third connecting groove and a fourth connecting groove spaced apart from the valve sleeve to the stop in the direction away from the stop. The first connecting groove is connected to the first connecting hole. The outer wall of the valve sleeve has a second connecting hole, a third connecting hole, a fourth connecting hole, a fifth connecting hole and a sixth connecting hole spaced apart from the valve sleeve to the stop in the direction away from the stop. The valve core can move along the first direction to a first position and a second position. When the valve core is in the first position, the first connecting hole, the first connecting groove and the second connecting hole are connected in sequence, and the fourth connecting hole, the third connecting groove and the fifth connecting hole are connected in sequence; When the valve core is in the second position, the second connecting hole, the second connecting groove and the third connecting hole are connected in sequence, and the fifth connecting hole, the fourth connecting groove and the sixth connecting hole are connected in sequence; or, The valve core has a first connecting hole on its end face near the valve sleeve. The outer wall of the valve core has a first connecting groove, a second connecting groove, and a third connecting groove spaced apart from the valve sleeve to the stop in the direction away from the stop. The first connecting groove is connected to the first connecting hole. The outer wall of the valve sleeve has a second connecting hole, a third connecting hole, a fourth connecting hole, a fifth connecting hole, and a sixth connecting hole spaced apart from the valve sleeve to the stop in the direction away from the stop. The valve core can move along the first direction to a first position and a second position. When the valve core is in the first position, the first connecting hole, the first connecting groove and the second connecting hole are connected in sequence, and the fifth connecting hole, the third connecting groove and the sixth connecting hole are connected in sequence; When the valve core is in the second position, the second connecting hole, the second connecting groove and the third connecting hole are connected in sequence, and the fourth connecting hole, the third connecting groove and the fifth connecting hole are connected in sequence.

[0015] Compared with the prior art, the electromagnetic valve implemented in this utility model has the following advantages: In the solenoid valve of this invention, the valve core passes through the reset cavity and is slidably connected to the fixed assembly along a first direction. When the solenoid valve is energized, a driving force along the first direction is applied to one end of the valve core, causing the valve core to move along the first direction, thereby changing the closed state of the solenoid valve and driving the components within the reset cavity to move. When the solenoid valve is de-energized, the components within the reset cavity can also drive the valve core to reset along the first direction. Furthermore, a first reset sleeve is connected to the valve core, enabling the valve core to drive the first reset sleeve to move along the first direction. Furthermore, a first spring is located between the first reset sleeve and the first cavity surface of the reset cavity, and the first spring can apply a spring force along the first direction to the first reset sleeve to drive the valve core to reset along the first direction. Furthermore, a second reset sleeve and a second spring are sleeved on... The first spring is located outside the first reset sleeve and between the first cavity surface. The second reset sleeve and the first reset sleeve are at least partially opposite each other along the first direction. When the solenoid valve is energized, the magnetic force drives the valve core to move along the first direction, and drives the first reset sleeve to move along the first direction. The first reset sleeve squeezes the first spring. After the valve core and the first reset sleeve move a certain distance, the first reset sleeve abuts against the second reset sleeve and drives the second reset sleeve to move along the first direction. The second reset sleeve squeezes the second spring. When the solenoid valve is de-energized, the first spring and the second spring push the first reset sleeve and the second reset sleeve respectively, giving the valve core a large acceleration. After the valve core, the first reset sleeve and the second reset sleeve move a certain distance, only the first spring pushes the first reset sleeve, giving the valve core a small acceleration. In summary, the two springs inside the solenoid valve of this invention can apply elastic force in segments. When the solenoid valve is energized, the magnetic force only needs to overcome the small elastic force of one spring to push the valve core, ensuring that the solenoid valve can start smoothly. When the solenoid valve is de-energized, the two springs simultaneously apply elastic force to the valve core for reset, causing the valve core to move back with a large acceleration, resulting in a faster return speed and a faster response speed. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the solenoid valve according to the first embodiment of the present invention.

[0017] Figure 2 for Figure 1 A magnified view of part A in the middle.

[0018] Figure 3 This is a cross-sectional view of the solenoid valve according to the second embodiment of the present invention.

[0019] Figure 4 This is a cross-sectional view of the solenoid valve according to the third embodiment of the present invention.

[0020] Reference numerals: 1. Fixing component; 11. Reset cavity; 111. First cavity surface; 1111. First connecting surface; 1112. Second connecting surface; 12. Retaining ring; 121. Second through hole; 13. Stop block; 131. Third through hole; 14. First limiting part; 141. Second abutment chamfer; 15. Second limiting part; 16. Valve sleeve; 161. First through hole; 162. Second connecting hole; 163. Third connecting hole; 164. Fourth connecting hole; 16 5. Fifth connecting hole; 166. Sixth connecting hole; 2. Valve core; 21. Receiving groove; 22. First connecting hole; 23. First connecting groove; 24. Second connecting groove; 25. Third connecting groove; 26. Fourth connecting groove; 3. First reset sleeve; 31. First abutting chamfer; 32. First sleeve hole; 33. Stop groove; 4. Second reset sleeve; 41. Abutting part; 42. Sliding part; 5. First spring; 6. Second spring; 7. Retaining ring; 8. Moving iron core; 9. Coil. Detailed Implementation

[0021] The specific embodiments of this utility model will be described in further 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 its scope.

[0022] 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.

[0023] 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.

[0024] like Figures 1 to 4As shown, a solenoid valve of this utility model includes a fixing component 1, a valve core 2, a first reset sleeve 3, a second reset sleeve 4, a first spring 5, and a second spring 6. The fixing component 1 has a reset cavity 11 extending along a first direction. One surface of the reset cavity 11 relative to the first direction is designated as a first cavity surface 111. The first reset sleeve 3, the second reset sleeve 4, the first spring 5, and the second spring 6 are disposed within the reset cavity 11. At least a portion of the valve core 2 passes through the reset cavity 11 and is slidably connected to the fixing component 1 along the first direction. The first reset sleeve 3 and the first spring 6... Spring 5 is sleeved on the outside of valve core 2. First reset sleeve 3 is connected to valve core 2. Second reset sleeve 4 and second spring 6 are sleeved on the outside of first spring 5 at intervals. First spring 5 and second reset sleeve 4 are located between first reset sleeve 3 and first cavity surface 111. Second spring 6 is located between second reset sleeve 4 and first cavity surface 111. First reset sleeve 3 and second reset sleeve 4 are at least partially opposite to each other along a first direction, so that when first reset sleeve 3 moves along the first direction, first reset sleeve 3 can abut against second reset sleeve 4.

[0025] In the above technical solution, the valve core 2 passes through the reset cavity 11 and is slidably connected to the fixed assembly 1 along the first direction. When the solenoid valve is energized, a driving force along the first direction is applied to one end of the valve core 2, allowing the valve core 2 to move along the first direction to change the closed state of the solenoid valve and drive the components in the reset cavity 11 to move. When the solenoid valve is de-energized, the components in the reset cavity 11 can also drive the valve core 2 to reset along the first direction. Furthermore, the first reset sleeve 3 is connected to the valve core 2, enabling the valve core 2 to drive the first reset sleeve 3 to move along the first direction. Furthermore, the first spring 5 is located between the first reset sleeve 3 and the first cavity surface 111 of the reset cavity 11. The first spring 5 can apply a spring force along the first direction to the first reset sleeve 3 to drive the valve core 2 to reset along the first direction. Furthermore, the second reset sleeve 4 and the second spring 6 are sleeved on the first... The spring 5 is located on the outside of the first reset sleeve 3 and the first cavity surface 111. The second reset sleeve 4 and the first reset sleeve 3 are at least partially opposite each other along the first direction. When the solenoid valve is energized, the magnetic force drives the valve core 2 to move along the first direction, and drives the first reset sleeve 3 to move along the first direction. The first reset sleeve 3 squeezes the first spring 5. After the valve core 2 and the first reset sleeve 3 move a certain distance, the first reset sleeve 3 abuts against the second reset sleeve 4 and drives the second reset sleeve 4 to move along the first direction. The second reset sleeve 4 squeezes the second spring 6. When the solenoid valve is de-energized, the first spring 5 and the second spring 6 push the first reset sleeve 3 and the second reset sleeve 4 respectively, giving the valve core 2 a large acceleration. After the valve core 2, the first reset sleeve 3 and the second reset sleeve 4 move a certain distance, only the first spring 5 pushes the first reset sleeve 3, giving the valve core 2 a small acceleration. In summary, the two springs inside the solenoid valve of this utility model can apply elastic force in segments. When the solenoid valve is energized, the magnetic force only needs to overcome the small elastic force of one spring to push the valve core 2, ensuring that the solenoid valve can start smoothly. When the solenoid valve is de-energized, the two springs simultaneously apply elastic force to the valve core 2 for reset, causing the valve core 2 to move back with a large acceleration, resulting in a faster return speed and a faster response speed.

[0026] Furthermore, it also includes a retaining ring 7. The outer side wall of the valve core 2 is provided with a receiving groove 21. At least a portion of the retaining ring 7 is disposed in the receiving groove 21 and protrudes from the outer side wall of the valve core 2. The first reset sleeve 3 is provided with a first sleeve hole 32 that extends along a first direction. The first sleeve hole 32 is slidably connected to the outer side wall of the valve core 2. The side of the first reset sleeve 3 away from the first cavity surface 111 is provided with a retaining groove 33 that communicates with the first sleeve hole 32. The groove wall or bottom of the retaining groove 33 is used to abut against the retaining ring 7.

[0027] The valve core 2 and the first reset sleeve 3 are connected by the abutment of the retaining ring 7 and the retaining groove 33, which not only ensures the synchronous movement of the valve core 2 and the first reset sleeve 3, but also adopts a detachable connection method to reduce the difficulty of component processing and assembly, and facilitates later maintenance.

[0028] Furthermore, the second reset sleeve 4 includes a connecting abutment portion 41 and a sliding portion 42. The abutment portion 41 has a second sleeve hole extending in a first direction. The first spring 5 passes through the second sleeve hole. The second spring 6 is connected to the side of the abutment portion 41 facing the first cavity surface 111. The sliding portion 42 is located on the side of the abutment portion 41 facing the first cavity surface 111 and is sleeved on the outside of the second spring 6. The outer wall of the sliding portion 42 is slidably connected to the cavity surface around the reset cavity 11.

[0029] The outer wall of the sliding part 42 slides and engages with the periphery of the reset cavity 11 to continuously guide the precise movement of the second reset sleeve 4, preventing the second reset sleeve 4 from tilting or shifting during movement, and ensuring the accuracy of its contact with the first reset sleeve 3 and the first cavity surface 111. Furthermore, the sliding part 42 is sleeved on the outside of the second spring 6, which can limit the radial deformation of the second spring 6 and prevent the spring from shifting during extension and retraction. Furthermore, the second hole of the abutment part 41 allows the first spring 5 to pass through, realizing the coaxial arrangement of the two springs and ensuring that the force of the two springs is uniformly transmitted along the axial direction.

[0030] Furthermore, the first cavity surface 111 includes a first connecting surface 1111 and a second connecting surface 1112. The second connecting surface 1112 is disposed around the first connecting surface 1111, and the first connecting surface 1111 protrudes from the second connecting surface 1112. The first connecting surface 1111 is connected to the first spring 5, and the second connecting surface 1112 is connected to the second spring 6. The second spring 6 is sleeved on the outside of the first connecting surface 1111.

[0031] The first connecting surface 1111 protrudes from the second connecting surface 1112, forming a stepped structure on the first cavity surface. Furthermore, the first spring 5 is connected to the first connecting surface 1111, and the second spring 6 is connected to the second connecting surface 1112. The second spring 6 is sleeved on the outside of the second connecting surface 1112, so that the second spring 6 is sleeved on the outside of the step of the first cavity surface 111. This achieves layered and coaxial fixation of the two springs, avoiding axial misalignment and interference of the springs during installation or operation, and ensuring the function of independent force bearing and coordinated reset of the two springs.

[0032] Furthermore, the cavity wall on the outer periphery of the reset cavity 11 is provided with a first limiting part 14. The first limiting part 14 is located on the side of the first reset sleeve 3 away from the first cavity surface 111. The first limiting part 14 and the first reset sleeve 3 are opposite to each other, so that when the first reset sleeve 3 moves along the first direction, the first limiting part 14 can abut against the first reset sleeve 3.

[0033] The first limiting part 14 can limit the maximum stroke of the valve core 2, ensuring that the solenoid valve resets to the same position each time.

[0034] Furthermore, the first reset sleeve 3 has a first abutting chamfer 31 on its outer edge facing the first limiting part 14, and the first limiting part 14 has a second abutting chamfer 141 on its inner edge facing the first reset sleeve 3. The first abutting chamfer 31 and the second abutting chamfer 141 are opposite to and adapted to each other, so that when the first reset sleeve 3 moves along the first direction, the first abutting chamfer 31 can abut against the second abutting chamfer 141.

[0035] The two chamfered surfaces have a large contact area, which can effectively reduce the pressure generated during contact, thereby reducing the wear of the first reset sleeve 3 and the first limiting part 14, extending the service life of the components. In addition, the two chamfered surfaces can guide the first reset sleeve 3 to smoothly contact the first limiting part 14, avoiding jamming caused by misalignment, while reducing mechanical noise during contact and improving the smoothness of operation.

[0036] Furthermore, the cavity wall on the outer periphery of the reset cavity 11 is provided with a second limiting part 15. The second limiting part 15 is located on the side of the second reset sleeve 4 away from the first cavity surface 111. The second limiting part 15 and the second reset sleeve 4 are opposite to each other, so that when the second reset sleeve 4 moves along the first direction, the second limiting part 15 can abut against and limit the second reset sleeve 4.

[0037] The second limiting part 15 is used to limit the movement range of the second reset sleeve 4 to ensure the consistency of the second reset sleeve 4 and the second spring 6 in each action, and to prevent the second reset sleeve 4 and the second spring 6 from separating.

[0038] Furthermore, the elastic coefficient of the first spring 5 is smaller than that of the second spring 6, so that the first spring 5 has a smaller spring stiffness, ensuring that the valve core 2 only needs to overcome a small elastic force to start smoothly in the initial stage of power-on, reducing the risk of jamming. The second spring 6 uses a larger wire diameter to improve the elastic force in the initial stage of power-off, providing a stronger reset driving force for the valve core 2 and improving the reset response speed.

[0039] Specifically, the elastic coefficient of the first spring 5 can be made smaller than that of the second spring by reducing one or more of the parameters such as elastic modulus, spring wire diameter, and effective number of turns.

[0040] Furthermore, the fixing component 1 includes a stop block 13, a retaining ring 12, and a valve sleeve 16 arranged sequentially along a first direction. The valve sleeve 16 has a first through hole 161 extending along the first direction. The retaining ring 12 has a second through hole 121 extending along the first direction. The stop block 13 has a third through hole 131 extending along the first direction. The first through hole 161, the second through hole 121, and the third through hole 131 are sequentially connected. The reset cavity 11 is disposed in the stop block 13 and is connected to the third through hole 131. The valve core 2 passes through the first through hole 161, the second through hole 121, and the third through hole 131 and is slidably connected to the first through hole 161.

[0041] The reset chamber 11 is formed by a retaining ring 12 and a stop block 13. The valve core 2 slides through the through holes of each component. During assembly, each module can be assembled in steps, which improves assembly efficiency and facilitates later maintenance and component replacement. In addition, the retaining ring 12 can abut against the valve core 2, so that the valve core 2 stops at the position abutting against the retaining ring 12 when it is reset, thereby ensuring the consistency of the reset of the valve core 2.

[0042] In some embodiments, reference is made to Figure 1 The valve core 2 has a first communicating hole 22 on its end face near the valve sleeve 16. The outer wall of the valve core 2, from the direction away from the valve sleeve 16 to the stop block 13, is provided with a first communicating groove 23, a second communicating groove 24, a third communicating groove 25, and a fourth communicating groove 26 spaced apart sequentially. The second communicating groove 24 communicates with the first communicating hole 22. The outer wall of the valve sleeve 16, from the direction away from the valve sleeve 16 to the stop block 13, is provided with a second communicating hole 162, a third communicating hole 163, a fourth communicating hole 164, a fifth communicating hole 165, and a sixth communicating hole 166 spaced apart sequentially, connecting to the first through hole 161. The valve core 2 is movable along a first direction to a first position and a second position via a connecting hole 166. When the valve core 2 is in the first position, the second connecting hole 162, the first connecting groove 23, and the third connecting hole 163 are connected in sequence, and the fourth connecting hole 164, the third connecting groove 25, and the fifth connecting hole 165 are connected in sequence. When the valve core 2 is in the second position, the first connecting hole 22, the second connecting groove 24, and the third connecting hole 163 are connected in sequence, and the fifth connecting hole 165, the fourth connecting groove 26, and the sixth connecting hole 166 are connected in sequence.

[0043] The aforementioned solenoid valve is a two-position six-way solenoid valve. When the solenoid valve is de-energized, the valve core 2 is in the first position (initial position), and the medium can flow between the second connecting hole 162 and the third connecting hole 163, and the medium can also flow between the fourth connecting hole 164 and the fifth connecting hole 165. When the solenoid valve is energized, the valve core 2 is in the second position, and the medium can flow between the first connecting hole 22 and the third connecting hole 163, and the medium can also flow between the fifth connecting hole 165 and the sixth connecting hole 166.

[0044] In other embodiments, reference is made to Figure 3 The valve core 2 has a first communicating hole 22 on its end face near the valve sleeve 16. The outer wall of the valve core 2, from the direction away from the valve sleeve 16 to the stop block 13, is provided with a first communicating groove 23, a second communicating groove 24, a third communicating groove 25, and a fourth communicating groove 26 spaced apart sequentially. The first communicating groove 23 communicates with the first communicating hole 22. The outer wall of the valve sleeve 16, from the direction away from the valve sleeve 16 to the stop block 13, is provided with a second communicating hole 162, a third communicating hole 163, a fourth communicating hole 164, a fifth communicating hole 165, and a sixth communicating hole 26 spaced apart sequentially, connecting to the first through hole 161. The valve core 2 is movable along a first direction to a first position and a second position via a connecting hole 166. When the valve core 2 is in the first position, the first connecting hole 22, the first connecting groove 23, and the second connecting hole 162 are connected in sequence, and the fourth connecting hole 164, the third connecting groove 25, and the fifth connecting hole 165 are connected in sequence. When the valve core 2 is in the second position, the second connecting hole 162, the second connecting groove 24, and the third connecting hole 163 are connected in sequence, and the fifth connecting hole 165, the fourth connecting groove 26, and the sixth connecting hole 166 are connected in sequence.

[0045] The aforementioned solenoid valve is a two-position six-way solenoid valve. When the solenoid valve is de-energized, the valve core 2 is in the first position (initial position), and the medium can flow between the first connecting hole 22 and the second connecting hole 162, and the medium can also flow between the fourth connecting hole 164 and the fifth connecting hole 165. When the solenoid valve is energized, the valve core 2 is in the second position, and the medium can flow between the second connecting hole 162 and the third connecting hole 163, and the medium can also flow between the fifth connecting hole 165 and the sixth connecting hole 166.

[0046] In some embodiments, reference is made to Figure 4The valve core 2 has a first connecting hole 22 on its end face near the valve sleeve 16. The outer wall of the valve core 2 has a first connecting groove 23, a second connecting groove 24, and a third connecting groove 25 spaced apart from the valve sleeve 16 to the stop block 13. The first connecting groove 23 communicates with the first connecting hole 22. The outer wall of the valve sleeve 16 has a second connecting hole 162, a third connecting hole 163, a fourth connecting hole 164, a fifth connecting hole 165, and a sixth connecting hole spaced apart from the valve sleeve 16 to the stop block 13, all connecting to the first through hole 161. 166, the valve core 2 can move along a first direction to a first position and a second position; when the valve core 2 is in the first position, the first connecting hole 22, the first connecting groove 23 and the second connecting hole 162 are connected in sequence, and the fifth connecting hole 165, the third connecting groove 25 and the sixth connecting hole 166 are connected in sequence; when the valve core 2 is in the second position, the second connecting hole 162, the second connecting groove 24 and the third connecting hole 163 are connected in sequence, and the fourth connecting hole 164, the third connecting groove 25 and the fifth connecting hole 165 are connected in sequence.

[0047] The aforementioned solenoid valve is a two-position six-way solenoid valve. When the solenoid valve is de-energized, the valve core 2 is in the first position (initial position), and the medium can flow between the first connecting hole 22 and the second connecting hole 162, and the medium can also flow between the fifth connecting hole 165 and the sixth connecting hole 166. When the solenoid valve is energized, the valve core 2 is in the second position, and the medium can flow between the second connecting hole 162 and the third connecting hole 163, and the medium can also flow between the fourth connecting hole 164 and the fifth connecting hole 165.

[0048] Furthermore, it also includes a moving iron core 8 and a coil 9. The end of the valve core 2 away from the valve sleeve 16 protrudes from the third through hole 131 and is fixedly connected to the moving iron core 8. The coil 9 is wound around the outside of the moving iron core 8.

[0049] Furthermore, it also includes a valve body, to which the fixing component 1 is fixedly connected.

[0050] Furthermore, the connections include fixed connections, detachable connections, sliding connections, and abutments.

[0051] 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.

[0052] Furthermore, detachable connection and detachable setting refer to the ability of two components to be repeatedly assembled and disassembled without damage or severe deformation, including but not limited to fixing by connectors or fixing by snap-fit ​​connections.

[0053] 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.

[0054] Furthermore, the connectors include, but are not limited to, fasteners, straps, ropes, pneumatic connectors, hydraulic connectors, flanges, Velcro, and buttons.

[0055] In summary, this utility model embodiment provides a solenoid valve, the technical effects of which are as follows: In the solenoid valve of this utility model, the valve core 2 passes through the reset cavity 11 and is slidably connected to the fixed assembly 1 along the first direction. When the solenoid valve is energized, a driving force along the first direction is applied to one end of the valve core 2, allowing the valve core 2 to move along the first direction, thereby changing the closed state of the solenoid valve and driving the components within the reset cavity 11 to move. When the solenoid valve is de-energized, the components within the reset cavity 11 can also drive the valve core 2 to reset along the first direction. Furthermore, the first reset sleeve 3 is connected to the valve core 2, enabling the valve core 2 to drive the first reset sleeve 3 to move along the first direction. Furthermore, the first spring 5 is located between the first reset sleeve 3 and the first cavity surface 111 of the reset cavity 11, and the first spring 5 can apply a spring force along the first direction to the first reset sleeve 3 to drive the valve core 2 to reset along the first direction. Furthermore, the second reset sleeve 4 and the second spring 6 are sleeved on the first... The second reset sleeve 4 and the first reset sleeve 3 are located on the outer side of the spring 5 and between the first reset sleeve 3 and the first cavity surface 111. The second reset sleeve 4 and the first reset sleeve 3 are at least partially opposite each other along the first direction. When the solenoid valve is energized, the magnetic force drives the valve core 2 to move along the first direction and drives the first reset sleeve 3 to move along the first direction. The first reset sleeve 3 squeezes the first spring 5. After the valve core 2 and the first reset sleeve 3 move a certain distance, the first reset sleeve 3 abuts against the second reset sleeve 4 and drives the second reset sleeve 4 to move along the first direction. The second reset sleeve 4 squeezes the second spring 6. When the solenoid valve is de-energized, the first spring 5 and the second spring 6 push the first reset sleeve 3 and the second reset sleeve 4 respectively, giving the valve core 2 a large acceleration. After the valve core 2, the first reset sleeve 3 and the second reset sleeve 4 move a certain distance, only the first spring 5 pushes the first reset sleeve 3, giving the valve core 2 a small acceleration. In summary, the two springs inside the solenoid valve of this utility model can apply elastic force in segments. When the solenoid valve is energized, the magnetic force only needs to overcome the small elastic force of one spring to push the valve core 2, ensuring that the solenoid valve can start smoothly. When the solenoid valve is de-energized, the two springs simultaneously apply elastic force to the valve core 2 for reset, causing the valve core 2 to move back with a large acceleration, resulting in a faster return speed and a faster response speed.

[0056] 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, The assembly includes a fixing component (1), a valve core (2), a first reset sleeve (3), a second reset sleeve (4), a first spring (5), and a second spring (6). The fixing component (1) has a reset cavity (11) extending in a first direction. The reset cavity (11) is designated as a first cavity surface (111) relative to a cavity surface in the first direction. The first reset sleeve (3), the second reset sleeve (4), the first spring (5), and the second spring (6) are disposed in the reset cavity (11). At least a portion of the valve core (2) passes through the reset cavity (11) and is slidably connected to the fixing component (1) in the first direction. The first reset sleeve (3) and the first spring (5) are sleeved on the valve core (2). The first reset sleeve (3) is connected to the valve core (2) on the outside of the valve core (2). The second reset sleeve (4) and the second spring (6) are spaced apart and sleeved on the outside of the first spring (5). The first spring (5) and the second reset sleeve (4) are located between the first reset sleeve (3) and the first cavity surface (111). The second spring (6) is located between the second reset sleeve (4) and the first cavity surface (111). The first reset sleeve (3) and the second reset sleeve (4) are at least partially opposite to each other along the first direction, so that when the first reset sleeve (3) moves along the first direction, the first reset sleeve (3) can abut against the second reset sleeve (4).

2. The solenoid valve according to claim 1, characterized in that, It also includes a retaining ring (7), and the outer side wall of the valve core (2) is provided with a receiving groove (21). At least part of the retaining ring (7) is provided in the receiving groove (21) and protrudes from the outer side wall of the valve core (2). The first reset sleeve (3) is provided with a first sleeve hole (32) that runs through the first direction. The first sleeve hole (32) is slidably connected to the outer side wall of the valve core (2). The side of the first reset sleeve (3) away from the first cavity surface (111) is provided with a retaining groove (33) that communicates with the first sleeve hole (32). The groove wall or the bottom of the retaining groove (33) is used to abut against the retaining ring (7).

3. The solenoid valve according to claim 1, characterized in that, The second reset sleeve (4) includes a connecting abutment part (41) and a sliding part (42). The abutment part (41) has a second sleeve hole that extends through in a first direction. The first spring (5) passes through the second sleeve hole. The second spring (6) is connected to the side of the abutment part (41) facing the first cavity surface (111). The sliding part (42) is located on the side of the abutment part (41) facing the first cavity surface (111) and is sleeved on the outside of the second spring (6). The outer wall of the sliding part (42) is slidably connected to the cavity surface around the reset cavity (11).

4. The solenoid valve according to claim 1, characterized in that, The first cavity surface (111) includes a first connecting surface (1111) and a second connecting surface (1112). The second connecting surface (1112) is arranged around the first connecting surface (1111). The first connecting surface (1111) protrudes from the second connecting surface (1112). The first connecting surface (1111) is connected to the first spring (5). The second connecting surface (1112) is connected to the second spring (6). The second spring (6) is sleeved on the outside of the first connecting surface (1111).

5. The solenoid valve according to claim 1, characterized in that, The outer periphery of the reset cavity (11) is provided with a first limiting part (14). The first limiting part (14) is located on the side of the first reset sleeve (3) away from the first cavity surface (111). The first limiting part (14) and the first reset sleeve (3) are opposite to each other, so that when the first reset sleeve (3) moves in the first direction, the first limiting part (14) can abut against the first reset sleeve (3).

6. The solenoid valve according to claim 5, characterized in that, The first reset sleeve (3) has a first abutting chamfer (31) on the outer edge facing the first limiting part (14), and the first limiting part (14) has a second abutting chamfer (141) on the inner edge facing the first reset sleeve (3) facing the first limiting part (14). The first abutting chamfer (31) and the second abutting chamfer (141) are opposite to and adapted to each other, so that when the first reset sleeve (3) moves along the first direction, the first abutting chamfer (31) can abut against the second abutting chamfer (141) in surface contact.

7. The solenoid valve according to claim 1, characterized in that, The outer periphery of the reset cavity (11) is provided with a second limiting part (15). The second limiting part (15) is located on the side of the second reset sleeve (4) away from the first cavity surface (111). The second limiting part (15) and the second reset sleeve (4) are opposite to each other, so that when the second reset sleeve (4) moves in the first direction, the second limiting part (15) can abut against and limit the second reset sleeve (4).

8. The solenoid valve according to claim 1, characterized in that, The elastic coefficient of the first spring (5) is less than that of the second spring (6).

9. The solenoid valve according to any one of claims 1 to 8, characterized in that, The fixing component (1) includes a stop block (13), a retaining ring (12), and a valve sleeve (16) arranged sequentially along a first direction. The valve sleeve (16) has a first through hole (161) extending along the first direction. The retaining ring (12) has a second through hole (121) extending along the first direction. The stop block (13) has a third through hole (131) extending along the first direction. The first through hole (161), the second through hole (121), and the third through hole (131) are connected sequentially. The reset cavity (11) is located inside the stop block (13) and is connected to the third through hole (131). The valve core (2) passes through the first through hole (161), the second through hole (121), and the third through hole (131) and is slidably connected to the first through hole (161).

10. The solenoid valve according to claim 9, characterized in that, The valve core (2) has a first connecting hole (22) on one end face near the valve sleeve (16). The outer side wall of the valve core (2) is provided with a first connecting groove (23), a second connecting groove (24), a third connecting groove (25) and a fourth connecting groove (26) in sequence from the direction away from the valve sleeve (16) to the stop (13). The second connecting groove (24) is connected to the first connecting hole (22). The outer side wall of the valve sleeve (16) is provided with a second connecting hole (162), a third connecting hole (163), a fourth connecting hole (164), a fifth connecting hole (165) and a sixth connecting hole (166) in sequence from the direction away from the valve sleeve (16) to the stop (13). The valve core (2) can move to a first position and a second position along a first direction. When the valve core (2) is in the first position, the second connecting hole (162), the first connecting groove (23) and the third connecting hole (163) are connected in sequence, and the fourth connecting hole (164), the third connecting groove (25) and the fifth connecting hole (165) are connected in sequence. When the valve core (2) is in the second position, the first connecting hole (22), the second connecting groove (24) and the third connecting hole (163) are connected in sequence, and the fifth connecting hole (165), the fourth connecting groove (26) and the sixth connecting hole (166) are connected in sequence. or, The valve core (2) has a first connecting hole (22) on one end face near the valve sleeve (16). The outer side wall of the valve core (2) is provided with a first connecting groove (23), a second connecting groove (24), a third connecting groove (25) and a fourth connecting groove (26) in sequence from the direction away from the valve sleeve (16) to the stop (13). The first connecting groove (23) is connected to the first connecting hole (22). The outer side wall of the valve sleeve (16) is provided with a second connecting hole (162), a third connecting hole (163), a fourth connecting hole (164), a fifth connecting hole (165) and a sixth connecting hole (166) in sequence from the direction away from the valve sleeve (16) to the stop (13). The valve core (2) can move to a first position and a second position along a first direction. When the valve core (2) is in the first position, the first connecting hole (22), the first connecting groove (23) and the second connecting hole (162) are connected in sequence, and the fourth connecting hole (164), the third connecting groove (25) and the fifth connecting hole (165) are connected in sequence. When the valve core (2) is in the second position, the second connecting hole (162), the second connecting groove (24) and the third connecting hole (163) are connected in sequence, and the fifth connecting hole (165), the fourth connecting groove (26) and the sixth connecting hole (166) are connected in sequence; or, The valve core (2) has a first connecting hole (22) on one end face near the valve sleeve (16). The outer wall of the valve core (2) is provided with a first connecting groove (23), a second connecting groove (24), and a third connecting groove (25) in sequence from the direction away from the valve sleeve (16) to the stop (13). The first connecting groove (23) is connected to the first connecting hole (22). The outer wall of the valve sleeve (16) is provided with a second connecting hole (162), a third connecting hole (163), a fourth connecting hole (164), a fifth connecting hole (165), and a sixth connecting hole (166) in sequence from the direction away from the valve sleeve (16) to the stop (13). The valve core (2) can move to a first position and a second position along a first direction. When the valve core (2) is in the first position, the first connecting hole (22), the first connecting groove (23) and the second connecting hole (162) are connected in sequence, and the fifth connecting hole (165), the third connecting groove (25) and the sixth connecting hole (166) are connected in sequence. When the valve core (2) is in the second position, the second connecting hole (162), the second connecting groove (24) and the third connecting hole (163) are connected in sequence, and the fourth connecting hole (164), the third connecting groove (25) and the fifth connecting hole (165) are connected in sequence.

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