A valve
By employing a parallel reset spring structure in the valve, the problem of reset spring damage due to instantaneous operating force is solved, thereby improving the valve's structural compactness and service life.
Patent Information
- Application Number
- CN202522604862.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-09
AI Technical Summary
When an operator suddenly applies a large instantaneous operating force to the valve through the handle, the return spring is highly likely to be damaged, resulting in a significant reduction in the valve's service life.
Two parallel reset springs are used. The first reset spring is sleeved outside the second reset spring at an interval and is connected to the valve core and valve body end face respectively. They share the operating force, reduce the stress burden of a single reset spring, and optimize the installation and extension process of the spring through a guide structure to reduce wear.
This effectively reduces the risk of damage to the return spring, improves the valve's structural compactness and reduces its size, while also extending the valve's service life.
Smart Images
Figure CN224932222U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of control element technology, and in particular to a valve. Background Technology
[0002] Currently, manual mechanical valves with return springs are widely used in petrochemical, water treatment, civil gas, and automotive braking systems. They include valve body, valve core, handle, and return spring. The function of the return spring is to automatically reset the valve core by using its own elasticity to return it to its initial position after the operator applies mechanical force through the handle to drive the valve core to complete the opening or adjustment action.
[0003] In practical applications, operators may suddenly apply a large instantaneous operating force to the valve through the handle due to operational misjudgment, emergency handling, or operating habits. This causes the instantaneous stress on the spring to exceed its design allowable stress, which in turn makes the spring more likely to be damaged (such as developing micro-cracks). Long-term repeated impacts will aggravate this damage and eventually cause the spring to break, significantly shortening the service life of the valve. Utility Model Content
[0004] The purpose of this utility model is to provide a valve that solves the technical problem that when an operator suddenly applies a large instantaneous operating force to the valve through the handle, the spring is likely to be damaged, resulting in a significant reduction in the valve's service life.
[0005] To achieve the above objectives, this utility model provides a valve, including a valve body, a valve core, a first return spring, a second return spring, and a handle. The valve body has a main flow channel extending along a first direction, with one end of the main flow channel along the first direction designated as a first end. The valve core is slidably disposed in the main flow channel along the first direction. The handle is installed on the valve body and connected to the end of the valve core away from the first end. The handle is used to drive the valve core to move along the first direction. The first return spring and the second return spring are disposed within the main flow channel along the axis of the valve core and located on the side of the valve core closer to the first end. The first return spring is spaced outside the second return spring, with both ends of the first return spring connected to the end face of the first end and the valve core, respectively. The two ends of the second return spring are also connected to the end face of the first end and the valve core, respectively.
[0006] Optionally, the valve core includes a core body and a protrusion, the protrusion being arranged around the outer side wall of the core body, and the first return spring being sleeved on the outer side of the core body and connected to the side of the protrusion relative to the first direction.
[0007] Optionally, the valve core further includes a first guide portion, which is circumferentially disposed on the outer side wall of the core body and located on the side of the protrusion near the first end. The first return spring is sleeved on the outer side of the first guide portion and slidably connected to the first guide portion. A first gap exists between the inner side wall of the first return spring and the outer side wall of the core body.
[0008] Optionally, the end face of the first end is provided with a second guide portion, and the first reset spring is sleeved on the outside of the second guide portion and slidably connected to the outer wall of the second guide portion.
[0009] Optionally, the end face of the valve core near the first end is provided with a reset hole along the axis of the valve core, and the second reset spring extends into the reset hole.
[0010] Optionally, the bottom of the reset hole is provided with a first guide groove along the axis of the valve core, the second reset spring extends into the first guide groove, the second reset spring is slidably connected to the groove wall of the first guide groove and connected to the bottom of the first guide groove, and there is a second gap between the outer wall of the second reset spring and the hole wall of the reset hole.
[0011] Optionally, the end face of the first end is provided with a second guide groove along the axis of the valve core, the second return spring extends into the second guide groove, the second return spring is slidably connected to the groove wall of the second guide groove, and connected to the bottom of the second guide groove.
[0012] Optionally, the length of the second reset spring is greater than the length of the first reset spring.
[0013] Optionally, if the valve core further includes a first guide portion, the first guide portion has a first guide surface on its side near the first end, and the distance between the first guide surface and the axis of the valve core gradually increases from near the first end to away from the first end. When a second guide portion is provided on the end face of the first end, a second guide surface is provided on the edge of the end of the second guide portion away from the first end, and the distance between the second guide surface and the axis of the valve core gradually decreases from the direction close to the first end to the direction away from the first end; When the valve core is provided with a first guide groove, the opening of the first guide groove is provided with a third guide surface, and the distance between the third guide surface and the axis of the valve core gradually decreases from the direction close to the first end to the direction far away from the first end. When a second guide groove is provided on the end face of the first end, a fourth guide surface is provided at the opening of the second guide groove, and the distance between the fourth guide surface and the axis of the valve core gradually increases from the direction closer to the first end to the direction farther away from the first end.
[0014] Optionally, the outer surface of the valve body is provided with a through hole, the through hole extending along a first direction to the end of the main flow channel away from the first end, and the valve core can move along the first direction to a position that passes through the through hole and protrudes from the outer surface of the valve body; The valve body is provided with a hinge part, which is located on one side of the through hole. The handle includes a connecting rod and an operating wheel. The two ends of the connecting rod are respectively connected to the hinge part and the operating wheel. The connecting rod is arranged corresponding to the valve core. When the connecting rod rotates around the hinge, the connecting rod can abut against the valve core, causing the valve core to move toward the first end.
[0015] Compared with the prior art, the valve implemented in this utility model has the following advantages: In the valve of this utility model, the valve core is located in the main flow channel and can move in a first direction to connect or block two channels connected to the main flow channel. Furthermore, a handle is connected to the end of the valve core away from the first end, allowing the operator to squeeze the valve core with the handle, causing the valve core to move towards the first end. Further, a first return spring and a second return spring are located in the main flow channel and on the side of the valve core near the first end. The first return spring is spaced outside the second return spring. Both the first and second return springs are connected to the first end and the valve core. The first and second return springs can continuously provide a pushing force to the valve core away from the first end. After the valve core moves towards the first end and the operator releases the handle, the first and second return springs can push the valve core back to its initial position away from the first end, thus resetting the valve core. In summary, in this utility model valve, the valve core is reset by two parallel reset springs. When the operator suddenly applies a large instantaneous operating force to the valve through the handle, the two reset springs each bear a portion of the stress, thereby reducing the stress that a single reset spring needs to bear and thus reducing the risk of damage to the reset spring. Moreover, the first reset spring is spaced outside the second reset spring, which can effectively utilize the space inside the first reset spring, reduce the space occupied by multiple reset springs in the main flow channel, improve the compactness of the structure, and reduce the size of the valve. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the valve structure of this utility model.
[0017] Figure 2 This is the front view of the valve of this utility model.
[0018] Figure 3 This is a top view of the valve of this utility model.
[0019] Figure 4 for Figure 3 Sectional view of AA.
[0020] Figure 5 for Figure 4 A magnified view of part B in the middle.
[0021] Reference numerals: 1. Valve body; 11. Main flow channel; 111. First end; 112. Second guide groove; 1121. Fourth guide surface; 12. Through hole; 13. First flow channel; 14. Second flow channel; 15. Sealing area; 2. Valve core; 21. Core body; 22. Protrusion; 23. First guide part; 231. First guide surface; 24. Reset hole; 25. First guide groove; 251. Third guide surface; 3. First reset spring; 4. Second reset spring; 5. Handle; 51. Connecting rod; 52. Operating wheel; 6a. First gap; 6b. Second gap; 7. Second guide part; 71. Second guide groove; 8. Hinge part; 9. First valve cover; 10. Seal. Detailed Implementation
[0022] 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.
[0023] 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.
[0024] 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.
[0025] like Figures 1 to 5As shown, a valve according to this utility model includes a valve body 1, a valve core 2, a first return spring 3, a second return spring 4, and a handle 5. The valve body 1 has a main flow channel 11 extending along a first direction. One end of the main flow channel 11 along the first direction is designated as a first end 111. The valve core 2 is slidably disposed in the main flow channel 11 along the first direction. The handle 5 is installed in the valve body 1 and connected to the end of the valve core 2 away from the first end 111. The handle 5 is used to drive the valve core 2 to move along the first direction. The first return spring 3 and the second return spring 4 are disposed in the main flow channel 11 along the axis of the valve core 2 and are located on the side of the valve core 2 close to the first end 111. The first return spring 3 is spaced out from the second return spring 4. The two ends of the first return spring 3 are respectively connected to the end face of the first end 111 and the valve core 2. The two ends of the second return spring 4 are respectively connected to the end face of the first end 111 and the valve core 2.
[0026] In the above technical solution, the valve core 2 is located on the main flow channel 11 and can move along the first direction to connect or block the two channels connected to the main flow channel 11. Furthermore, the handle 5 is connected to the end of the valve core 2 away from the first end 111, so that the operator can squeeze the valve core 2 through the handle 5 to move the valve core 2 towards the first end 111. Furthermore, the first return spring 3 and the second return spring 4 are located on the main flow channel 11 and on the side of the valve core 2 near the first end 111. The first return spring 3 is spaced out on the outside of the second return spring 4. The first return spring 3 and the second return spring 4 are both connected to the first end 111 and the valve core 2. The first return spring 3 and the second return spring 4 can continuously provide the valve core 2 with a pushing force away from the first end 111. After the valve core 2 moves towards the first end 111 and the operator releases the handle 5, the first return spring 3 and the second return spring 4 can push the valve core 2 away from the first end 111 to its initial position to achieve the reset of the valve core 2. In summary, in this utility model valve, the valve core 2 is reset by two parallel reset springs. When the operator suddenly applies a large instantaneous operating force to the valve through the handle 5, the two reset springs each bear a portion of the stress, thereby reducing the stress that a single reset spring needs to bear and thus reducing the risk of damage to the reset spring. Moreover, the first reset spring 3 is spaced out on the outside of the second reset spring 4, which can effectively utilize the space inside the first reset spring 3, reduce the space occupied by multiple reset springs in the main flow channel 11, improve the compactness of the structure, and reduce the volume of the valve.
[0027] Furthermore, the valve core 2 includes a core body 21 and a protrusion 22. The protrusion 22 is arranged around the outer side wall of the core body 21. The first return spring 3 is sleeved on the outer side of the core body 21 and connected to the side of the protrusion 22 relative to the first direction.
[0028] The protrusion 22 is arranged around the outer wall of the core body 21 to provide a larger abutting surface for the first return spring 3, so that the end of the first return spring 3 away from the first end 111 can smoothly and reliably abut against the valve core 2.
[0029] Furthermore, the valve core 2 also includes a first guide portion 23, which is arranged around the outer wall of the core body 21 and located on the side of the protrusion 22 near the first end 111. The first return spring 3 is sleeved on the outer side of the first guide portion 23 and slidably connected to the first guide portion 23. There is a first gap 6a between the inner wall of the first return spring 3 and the outer wall of the core body 21.
[0030] During the extension and retraction process, the end of the first return spring 3 furthest from the first end 111 is always attached to the outer side of the first guide portion 23 to reduce the offset of this end of the first return spring 3 in the direction perpendicular to the axis of the valve core 2, so that it extends and retracts as much as possible in the first direction. There is a first gap 6a between the inner wall of the first return spring 3 and the outer wall of the core body 21 to avoid friction between the inner side of the first return spring 3 and the outer wall of the core body 21 during the extension and retraction of the first return spring 3, thereby reducing the wear of the core body 21 and the first return spring 3. Specifically, the width of the first gap 6a along the radial direction of the valve core 2 is 0.1mm to 0.2mm, preferably 0.15mm.
[0031] Furthermore, the end face of the first end 111 is provided with a second guide portion 7, and the first reset spring 3 is sleeved on the outside of the second guide portion 7 and slidably connected to the outer wall of the second guide portion 7.
[0032] During the extension and retraction process, the end of the first return spring 3 near the first end 111 is always attached to the outside of the second guide part 7 to reduce the offset of this end of the first return spring 3 in the direction perpendicular to the axis of the valve core 2, so that it extends and retracts as much as possible in the first direction.
[0033] Furthermore, the end face of the valve core 2 near the first end 111 is provided with a reset hole 24 along the axis of the valve core 2, and the second reset spring 4 extends into the reset hole 24.
[0034] Specifically, a reset hole 24 is provided on the end face of the valve core 2 near the first end 111, so that a longer second reset spring 4 can be accommodated and set between the first end 111 and the valve core 2. The longer second reset spring 4 has a larger deformation stroke, which can absorb stress and buffer impact load more smoothly and evenly. In addition, the minimum distance between the hole wall of the reset hole 24 and the outer wall of the valve core 2 is greater than 0.5mm, so as to avoid the reset hole 24 from having an excessive weakening effect on the valve core 2.
[0035] Furthermore, the bottom of the reset hole 24 is provided with a first guide groove 25 along the axis of the valve core 2, the second reset spring 4 extends into the first guide groove 25, the second reset spring 4 is slidably connected to the groove wall of the first guide groove 25 and connected to the bottom of the first guide groove 25, and there is a second gap 6b between the outer side wall of the second reset spring 4 and the hole wall of the reset hole 24.
[0036] The second return spring 4 has a second gap 6b between its outer side wall and the wall of the return hole 24 to avoid friction between the outer side of the second return spring 4 and the wall of the return hole 24 when the second return spring 4 extends or retracts, thereby reducing the wear of the core body 21 and the second return spring 4. Specifically, the width of the second gap 6b along the radial direction of the valve core 2 is 0.15mm to 0.3mm, preferably 0.2mm.
[0037] Furthermore, the end face of the first end 111 is provided with a second guide groove 112 along the axis of the valve core 2, the second return spring 4 extends into the second guide groove 112, the second return spring 4 is slidably connected to the groove wall of the second guide groove 112, and connected to the bottom of the second guide groove 112.
[0038] During the extension and retraction process, the end of the second return spring 4 closest to the first end 111 is always attached to the inner side of the second guide groove 112 to reduce the offset of this end of the second return spring 4 in the direction perpendicular to the axis of the valve core 2, so that it extends and retracts as much as possible in the first direction.
[0039] Furthermore, the second guide groove 112 may be provided on the side of the first guide portion 23 away from the first end 111.
[0040] Furthermore, the bottom of the second guide groove 112 can be flush with the end face of the first end 111, making the first guide portion 23 an annular component.
[0041] Furthermore, the length of the second return spring 4 is greater than the length of the first return spring 3, so as to increase the allowable stress of the second return spring 4 and compensate for the defect that the allowable stress is smaller due to the smaller diameter of the second return spring 4 (compared to the first return spring 3).
[0042] Specifically, the length of the second return spring 4 can be greater than the length of the first return spring 3 by making the distance between the two ends of the second return spring 4 connected (which can be the bottom of the first guide groove 25 and the bottom of the second guide groove 112) greater than the distance between the two ends of the first return spring 3 connected (which can be the end face of the first end 111 and the side of the protrusion 22 relative to the first end 111).
[0043] Furthermore, when the valve core 2 further includes a first guide portion 23, the side of the first guide portion 23 near the first end 111 is provided with a first guide surface 231, and the distance between the first guide surface 231 and the axis of the valve core 2 gradually increases from near the first end 111 to away from the first end 111; when the end face of the first end 111 is provided with a second guide portion 7, the edge of the second guide portion 7 away from the first end 111 is provided with a second guide surface 71, and the distance between the second guide surface 71 and the axis of the valve core 2 increases from near the first end 111 to away from the first end 111. The distance between the first guide groove 25 and the axis of the valve core 2 gradually decreases from the direction of the first guide groove 25 to the direction of the first guide groove 25. When the valve core 2 is provided with a first guide groove 25, the groove opening of the first guide groove 25 is provided with a third guide surface 251, and the distance between the third guide surface 251 and the axis of the valve core 2 gradually decreases from the direction of the first end 111 to the direction of the first end 111. When the end face of the first end 111 is provided with a second guide groove 112, the groove opening of the second guide groove 112 is provided with a fourth guide surface 1121, and the distance between the fourth guide surface 1121 and the axis of the valve core 2 gradually increases from the direction of the first end 111 to the direction of the first end 111.
[0044] In this design, by setting a gradient guide surface in each guide structure (first guide part 23, second guide part 7, first guide groove 25, second guide groove 112), the reset spring can be installed in each guide part and guide groove. Furthermore, the right-angle groove and end edge can be avoided from cutting and squeezing the reset spring during its extension and retraction, thereby reducing wear on the reset spring and the probability of jamming.
[0045] Furthermore, the outer surface of the valve body 1 is provided with a through hole 12, which extends along a first direction to the end of the main flow channel 11 away from the first end 111. The valve core 2 can move along the first direction to a position that passes through the through hole 12 and protrudes from the outer surface of the valve body 1. The valve body 1 is provided with a hinge portion 8, which is located on one side of the through hole 12. The handle 5 includes a connecting rod 51 and an operating wheel 52. The two ends of the connecting rod 51 are respectively connected to the hinge portion 8 and the operating wheel 52. The connecting rod 51 is provided corresponding to the valve core 2. When the connecting rod 51 rotates around the hinge portion 8, the connecting rod 51 can abut against the valve core 2, causing the valve core 2 to move toward the first end 111.
[0046] The operator can grasp the operating wheel 52 to pull (or push) the connecting rod 51 to rotate around the hinge part 8, so that the connecting rod 51 can abut against the end of the valve core 2 away from the first end 111.
[0047] Furthermore, it also includes a first valve cover 9, which is detachably installed on one side of the valve body 1, and the first end 111 is the end of the first valve cover 9 relative to the valve core 2.
[0048] The removable first valve cover 9 facilitates the disassembly, assembly, and maintenance of the two return springs.
[0049] Furthermore, the outer wall of the valve core 2 is provided with a sealing element 10, and the outer surface of the valve body 1 is also provided with a first flow channel 13 and a second flow channel 14 communicating with the main flow channel 11. The main flow channel 11 has a first position and a second position. The valve core 2 is disposed between the first position and the second position and moves back and forth. A sealing area 15 is provided at the junction of the first flow channel 13 and the main flow channel 11, inside the first flow channel 13, or inside the main flow channel 11. When the valve core 2 moves to the first position, the sealing element 10 forms a sealing fit with the sealing area 15 to block the communication between the first flow channel 13 and the second flow channel 14. When the valve core 2 moves to the second position, the sealing element 10 disengages from the sealing area 15 so that the first flow channel 13 communicates with the second flow channel 14.
[0050] 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.
[0051] 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.
[0052] 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.
[0053] Furthermore, rotatable connection and rotatable setting refer to the ability of two connected components to rotate, including but not limited to connections via bearings or clearance fits.
[0054] Furthermore, the connectors include, but are not limited to, fasteners, straps, ropes, pneumatic connectors, hydraulic connectors, flanges, Velcro, and buttons.
[0055] In summary, the present invention provides a valve, the technical effects of which are as follows: In the valve of this utility model, the valve core 2 is located in the main flow channel 11 and can move along the first direction to connect or block two channels connected to the main flow channel 11. Furthermore, the handle 5 is connected to the end of the valve core 2 away from the first end 111, so that the operator can squeeze the valve core 2 through the handle 5 to move the valve core 2 towards the first end 111. Furthermore, the first return spring 3 and the second return spring 4 are located in the main flow channel 11 and on the side of the valve core 2 near the first end 111. The first return spring 3 is spaced out on the outside of the second return spring 4. The first return spring 3 and the second return spring 4 are both connected to the first end 111 and the valve core 2. The first return spring 3 and the second return spring 4 can continuously provide the valve core 2 with a pushing force away from the first end 111. After the valve core 2 moves towards the first end 111 and the operator releases the handle 5, the first return spring 3 and the second return spring 4 can push the valve core 2 away from the first end 111 to its initial position to achieve the reset of the valve core 2. In summary, in this utility model valve, the valve core 2 is reset by two parallel reset springs. When the operator suddenly applies a large instantaneous operating force to the valve through the handle 5, the two reset springs each bear a portion of the stress, thereby reducing the stress that a single reset spring needs to bear and thus reducing the risk of damage to the reset spring. Moreover, the first reset spring 3 is spaced out on the outside of the second reset spring 4, which can effectively utilize the space inside the first reset spring 3, reduce the space occupied by multiple reset springs in the main flow channel 11, improve the compactness of the structure, and reduce the volume of the valve.
[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 valve, characterized in that, The valve body (1) includes a valve core (2), a first return spring (3), a second return spring (4), and a handle (5). The valve body (1) has a main flow channel (11) extending in a first direction. One end of the main flow channel (11) in the first direction is designated as a first end (111). The valve core (2) is slidably disposed in the main flow channel (11) in the first direction. The handle (5) is mounted on the valve body (1) and connected to the end of the valve core (2) away from the first end (111). The handle (5) is used to drive the valve core (2) along the first direction. Moving in the first direction, the first return spring (3) and the second return spring (4) are arranged in the main flow channel (11) along the axis of the valve core (2) and located on the side of the valve core (2) near the first end (111). The first return spring (3) is spaced out from the second return spring (4). The two ends of the first return spring (3) are respectively connected to the end face of the first end (111) and the valve core (2). The two ends of the second return spring (4) are respectively connected to the end face of the first end (111) and the valve core (2).
2. The valve according to claim 1, characterized in that, The valve core (2) includes a core body (21) and a protrusion (22). The protrusion (22) is arranged around the outer side wall of the core body (21). The first reset spring (3) is sleeved on the outer side of the core body (21) and connected to the side of the protrusion (22) relative to the first direction.
3. The valve according to claim 2, characterized in that, The valve core (2) further includes a first guide portion (23), which is arranged around the outer side wall of the core body (21) and located on the side of the protrusion (22) near the first end (111). The first return spring (3) is sleeved on the outer side of the first guide portion (23) and slidably connected to the first guide portion (23). There is a first gap (6a) between the inner side wall of the first return spring (3) and the outer side wall of the core body (21).
4. The valve according to claim 1, characterized in that, The end face of the first end (111) is provided with a second guide portion (7), and the first reset spring (3) is sleeved on the outside of the second guide portion (7) and slidably connected to the outer wall of the second guide portion (7).
5. The valve according to claim 1, characterized in that, The valve core (2) has a reset hole (24) on the end face near the first end (111) along the axis of the valve core (2), and the second reset spring (4) extends into the reset hole (24).
6. The valve according to claim 5, characterized in that, The bottom of the reset hole (24) is provided with a first guide groove (25) along the axis of the valve core (2). The second reset spring (4) extends into the first guide groove (25). The second reset spring (4) is slidably connected to the groove wall of the first guide groove (25) and connected to the bottom of the first guide groove (25). There is a second gap (6b) between the outer wall of the second reset spring (4) and the hole wall of the reset hole (24).
7. The valve according to claim 1, characterized in that, The end face of the first end (111) is provided with a second guide groove (112) along the axis of the valve core (2). The second return spring (4) extends into the second guide groove (112). The second return spring (4) is slidably connected to the groove wall of the second guide groove (112) and connected to the bottom of the second guide groove (112).
8. The valve according to claim 1, characterized in that, The length of the second reset spring (4) is greater than the length of the first reset spring (3).
9. The valve according to claim 1, characterized in that, When the valve core (2) further includes a first guide portion (23), the first guide portion (23) has a first guide surface (231) on the side near the first end (111), and the distance between the first guide surface (231) and the axis of the valve core (2) gradually increases from near the first end (111) to away from the first end (111); When a second guide portion (7) is provided on the end face of the first end (111), a second guide surface (71) is provided on the edge of the end of the second guide portion (7) away from the first end (111), and the distance between the second guide surface (71) and the axis of the valve core (2) gradually decreases from the direction close to the first end (111) to away from the first end (111). When the valve core (2) is provided with a first guide groove (25), the groove opening of the first guide groove (25) is provided with a third guide surface (251), and the distance between the third guide surface (251) and the axis of the valve core (2) gradually decreases from the direction close to the first end (111) to the direction far away from the first end (111). When a second guide groove (112) is provided on the end face of the first end (111), a fourth guide surface (1121) is provided at the opening of the second guide groove (112), and the distance between the fourth guide surface (1121) and the axis of the valve core (2) gradually increases from the direction close to the first end (111) to the direction far away from the first end (111).
10. The valve according to claim 1, characterized in that, The outer surface of the valve body (1) is provided with a through hole (12), which extends along the first direction to the end of the main flow channel (11) away from the first end (111). The valve core (2) can move along the first direction to a position that passes through the through hole (12) and protrudes from the outer surface of the valve body (1). The valve body (1) is provided with a hinge (8), which is located on one side of the through hole (12). The handle (5) includes a connecting rod (51) and an operating wheel (52). The two ends of the connecting rod (51) are respectively connected to the hinge (8) and the operating wheel (52). The connecting rod (51) is provided corresponding to the valve core (2). When the connecting rod (51) rotates around the hinge (8), the connecting rod (51) can abut against the valve core (2), causing the valve core (2) to move toward the first end (111).