Manual and automatic integrated valve

Abstract

The invention relates to the field of fluid control, and provides a manual and automatic integrated valve which comprises a valve body, a valve element, a spring, a first reversing assembly and a limiting piece. A first cavity and a second cavity are formed in the valve body; the valve element is in sliding connection with the valve body, the first end of the valve element is located in the first cavity, the second end of the valve element is located in the second cavity, the second end of the valve element is connected with the valve body through a spring, the second cavity is provided with a first opening, a second opening and a third opening, the valve element is provided with a groove, and the valve element slides to achieve state switching; in the first state, the second opening is communicated with the first opening through the groove; in the second state, the second opening is communicated with the third opening through the groove; a fourth opening is formed in the valve body, and the first reversing assembly communicates with the fourth opening and is used for guiding fluid into the first cavity; the limiting piece is arranged in the valve body and used for limiting the valve element, and the position of the limiting piece in the sliding direction of the valve element is adjustable. The problem that a traditional reversing valve cannot achieve flow adjustment is solved.

Description

Technical Field

[0001] The present application relates to the field of fluid control, and in particular to a manual-automatic integrated valve. Background Art

[0002] In the industrial field, fluid pressure actuators are often used to complete various tasks by converting fluid pressure into mechanical energy. For example, fluid (hydraulic oil) is used to extend and retract a hydraulic cylinder, or fluid is used to open and close a valve.

[0003] The fluid driving method of the reversing valve is: the valve core of the reversing valve is driven to move by fluid pressure to achieve reversing; when the valve core moves, the spring inside the reversing valve is compressed. When the fluid pressure is removed, the valve core will reset under the action of the spring, thereby reversing again to restore the previous state.

[0004] However, the reversing valve driven by fluid can usually only realize the reversing function, but cannot realize the regulation of the flow of the medium. The reason is that the movement of the valve core depends on the fluid pressure to overcome the elastic force of the spring. If the flow is to be regulated, the valve core needs to be able to stop and remain stationary at any time when moving within its moving stroke. This requires that the fluid pressure is equal to the elastic force of the spring, which is difficult to achieve stably in practice and the valve core is likely to shake. Summary of the invention

[0005] In order to solve the problem that traditional reversing valves cannot achieve flow regulation, the present application provides a manual-automatic integrated valve.

[0006] The present application provides a manual-automatic integrated valve adopting the following technical solution: A manual-automatic integrated valve comprises a valve body, a valve core, a spring, a first reversing component and a limiter; The valve body has a first chamber and a second chamber inside; The valve core is slidably connected to the valve body, the first end of the valve core is located in the first chamber, the second end is located in the second chamber, the second end of the valve core is connected to the valve body through the spring, the second chamber is provided with a first opening, a second opening and a third opening in sequence along the axial direction, the valve core is provided with a groove, and the valve core switches between the first state and the second state by sliding; In the first state, the second opening is in communication with the first opening through the groove; In the second state, the second opening is connected to the third opening through the groove; The valve body is provided with a fourth opening communicating with the first chamber, the first reversing assembly is communicated with the fourth opening and is used to introduce fluid into the first chamber so that the fluid abuts against the first end of the valve core; The limiting member is arranged in the valve body and is used to limit the valve core. The position of the limiting member along the sliding direction of the valve core is adjustable.

[0007] By adopting the above solution, the manual-automatic integrated valve can adjust the flow direction and flow rate of the medium. Specifically: The first reversing component cooperates with the spring to drive the valve core to move, thereby switching the flow direction of the medium; When the first reversing component drives the valve core to move, the limiting member can limit the valve core so that the valve core can remain stationary at any position in the maximum moving path, thereby achieving regulation of the medium flow rate.

[0008] Preferably, the manual-automatic integrated valve further comprises a second reversing assembly, the second reversing assembly comprises a sliding block and an adjusting unit, the sliding block is slidably connected to the inner wall of the first chamber, the adjusting unit is movably connected to the valve body, and the adjusting unit is used to push the sliding block so that the sliding block abuts against the first end of the valve core; A third chamber is formed between the sliding block and the valve core, and the third chamber is used to communicate with the fourth opening.

[0009] By adopting the above technical solution, a second reversing component is added, and the valve core is driven to move by the sliding block, thereby adding another means of reversing and flow control.

[0010] Preferably, the adjusting unit comprises an adjusting block and an adjusting handle, the adjusting block is threadedly connected to the valve body, one end of the adjusting block abuts against the sliding block, and the other end passes through the valve body and is connected to the adjusting handle.

[0011] By adopting the above technical solution, the adjusting block is threadedly connected to the valve body, which can achieve fine position adjustment and ensure that the valve core can achieve accurate position adjustment. At the same time, the design of the adjusting handle is convenient for manual operation, providing a manual control method for the manual-automatic integrated valve.

[0012] Preferably, a strip groove is provided on the inner wall of the first chamber, the strip groove is arranged along the sliding direction of the valve core, and the strip groove is used to connect the fourth opening and the third chamber.

[0013] By adopting the above technical solution, the design of the strip groove enables the first reversing component to guide the fluid into the third chamber through the fourth opening and the strip groove to achieve movement of the valve core regardless of the position of the sliding block.

[0014] Preferably, the valve core has a fourth chamber inside, and the limiter is slidably disposed in the fourth chamber; The manual-automatic integrated valve also includes an adjusting rod, which is arranged in the first chamber along the sliding direction of the valve core, one end of the adjusting rod penetrates into the fourth chamber and is connected to the limiter, and the other end penetrates the sliding block and the adjusting block.

[0015] By adopting the above technical solution, the fourth chamber inside the valve core and the limiter slidably arranged therein can realize accurate limit of the valve core, ensuring that the valve core is stable and reliable under different working conditions. The design of the adjustment rod allows the position of the limiter to be adjusted by external operation, thereby flexibly controlling the position of the valve core.

[0016] Preferably, the manual-automatic integrated valve has at least a third state and a fourth state; In the third state, the sliding block and the limiting member jointly limit the valve core so that the valve core is in the first state, and the first reversing assembly is used to drive the valve core to slide to change the communication size between the second opening and the first opening; In the fourth state, the sliding block and the limiting member jointly limit the valve core so that the valve core is in the second state, and the first reversing assembly is used to drive the valve core to slide to change the communication size between the second opening and the third opening.

[0017] By adopting the above technical solution, the manual-automatic integrated valve can achieve fine adjustment of the medium flow. Specifically: In the third state, the sliding block and the limiter jointly limit the valve core to ensure that the valve core is stably in the first state. At this time, the first reversing component can drive the valve core to slide, change the connection size between the second opening and the first opening, and thus finely adjust the medium flow.

[0018] In the fourth state, the sliding block and the limiter also limit the valve core, but the valve core is in the second state. At this time, the first reversing component can still drive the valve core to slide, change the connection size between the second opening and the third opening, and thus finely adjust the medium flow.

[0019] This design not only improves the working accuracy and reliability of the manual-automatic integrated valve, but also enhances its ability to adapt to different working conditions.

[0020] Preferably, the manual-automatic integrated valve further comprises a locking member, and the locking member is used to lock the adjusting rod and the adjusting block.

[0021] By adopting the above solution, the locking member can lock or release the adjusting rod, so that the adjusting rod can move with the adjusting block or move independently, so as to adapt to different working conditions.

[0022] Preferably, flexible pads are provided on opposite sides of the limiting member along the sliding direction of the valve core.

[0023] By adopting the above technical solution, flexible pads are provided on both sides of the limiter along the sliding direction of the valve core, which can effectively reduce the rigid collision between the valve core and the limiter during movement, reduce noise and increase service life.

[0024] Preferably, a sealing ring is provided between the adjusting rod and the sliding block.

[0025] By adopting the above technical solution, the sealing ring between the regulating rod and the sliding block can effectively prevent leakage of the medium, thereby improving the sealing performance and reliability of the manual-automatic integrated valve.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The first reversing component and the spring cooperate with each other to change the position of the valve core to achieve the reversing function; 2. The limiter limits the position of the valve core and cooperates with the first reversing component to drive the valve core to move, so that the valve core can maintain a stable static state at any position to achieve the regulation of the medium flow; 3. The second reversing component is matched with the first reversing component, so that the manual-automatic integrated valve has multiple control methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the valve core of the manual-automatic integrated valve provided in the present application being in a first state.

[0028] Figure 2 It is an enlarged schematic diagram of point A provided in this application.

[0029] Figure 3 It is a structural schematic diagram of the valve core of the manual-automatic integrated valve provided in the present application being in the second state.

[0030] Figure 4 It is a structural schematic diagram of the manual-automatic integrated valve provided in the present application in the third state.

[0031] Description of reference numerals: 1. valve body; 11. first chamber; 12. second chamber; 13. limit column; 14. first opening; 15. second opening; 16. third opening; 17. fourth opening; 18. third chamber; 19. strip groove; 2. valve core; 21. groove; 22. fourth chamber; 3. Spring; 4. Second reversing assembly; 41. Sliding block; 42. Adjusting block; 43. Adjusting handle; 5. Limiting piece; 6. Adjusting rod; 7. Sealing ring. DETAILED DESCRIPTION

[0032] The following is combined with Figures 1 to 4 This application is described in further detail.

[0033] like Figures 1 to 3 As shown, an embodiment of the present application discloses a manual-automatic integrated valve, comprising: a valve body 1, a valve core 2, a spring 3, a first reversing assembly, a second reversing assembly 4, a limit member 5 and an adjusting rod 6.

[0034] Specifically, the valve body 1 is cylindrical, and a first chamber 11 and a second chamber 12 communicating with each other are sequentially arranged inside the valve body 1 along the axial direction thereof.

[0035] The valve core 2 is slidably connected to the inner wall of the valve body 1, and the first end of the valve core 2 is located in the first chamber 11. The second end of the valve core 2 is located in the second chamber 12 and is connected to the inner wall of the second chamber 12 through the spring 3. A limiting column 13 for limiting the spring 3 is provided in the second chamber 12.

[0036] A first opening 14 , a second opening 15 and a third opening 16 are sequentially provided on the side wall of the second chamber 12 in the axial direction. A groove 21 is provided on the valve core 2 . The valve core 2 switches between the first state and the second state by sliding.

[0037] In the first state, the second opening 15 is connected to the first opening 14 through the groove 21 , and the medium flowing into the second chamber 12 from the second opening 15 can flow toward the first opening 14 through the groove 21 and flow out from the first opening 14 .

[0038] In the second state, the second opening 15 is connected to the third opening 16 through the groove 21 , and the medium flowing into the second chamber 12 from the second opening 15 can flow toward the third opening 16 through the groove 21 and flow out from the third opening 16 .

[0039] The valve body 1 is provided with a fourth opening 17 connected to the first chamber 11. The first reversing assembly is connected to the fourth opening 17 and is used to introduce the fluid into the first chamber 11. The first reversing assembly may include a hydraulic pump and a pipeline. The hydraulic pump is connected to the fourth opening 17 through the pipeline, and the hydraulic oil (fluid) is introduced into the first chamber 11 through the hydraulic pump. The hydraulic oil introduced into the first chamber 11 can abut against the first end of the valve core 2, thereby pushing the valve core 2 to move toward the second chamber 12. When the valve core 2 moves toward the second chamber 12, the valve core 2 can switch from the first state to the second state to achieve a change in the flow direction of the medium. At this time, the spring 3 is compressed. When the hydraulic oil flows back and is discharged from the first chamber 11, the valve core 2 is reset under the action of the spring 3 and switches from the second state to the first state.

[0040] The second reversing assembly 4 includes a sliding block 41 and an adjusting unit, wherein the sliding block 41 is slidably connected to the inner wall of the first chamber 11, and the adjusting unit is movably connected to the valve body 1. The adjusting unit pushes the sliding block 41 to abut against the first end of the valve core 2, thereby driving the valve core 2 to move to achieve reversal.

[0041] Specifically, the regulating unit includes a regulating block 42 and a regulating handle 43. The regulating block 42 is threadedly connected to the valve body 1. One end of the regulating block 42 abuts against the sliding block 41, and the other end passes through the valve body 1 and is connected to the regulating handle 43. By rotating the regulating handle 43, the regulating block 42 can be moved closer to or away from the second chamber 12. When the regulating block 42 is close to the second chamber 12, the sliding block 41 can be pushed to move, so that the sliding block 41 pushes the valve core 2 to move and compresses the spring 3. When the regulating block 42 is away from the second chamber 12, the valve core 2 and the sliding block 41 are reset under the action of the spring 3. By setting the second reversing component 4, manual control of the manual-automatic integrated valve can be achieved.

[0042] In addition, the side of the sliding block 41 facing the valve core 2 is not tightly fitted to the valve core 2, but a third chamber 18 is formed between the two, and the third chamber 18 is connected to the fourth opening 17. The first reversing assembly drives the valve core 2 to move by introducing hydraulic oil into the third chamber 18.

[0043] Furthermore, a strip groove 19 is provided on the inner wall of the first chamber 11, and the strip groove 19 is provided along the sliding direction of the valve core 2, and the strip groove 19 is used to connect the fourth opening 17 and the third chamber 18. By providing the strip groove 19, the fourth opening 17 can be connected to the third chamber 18 regardless of the position of the valve core 2, thereby avoiding the situation where the sliding block 41 blocks the fourth opening 17.

[0044] The valve core 2 has a fourth chamber 22 inside, and the limiter 5 is slidably disposed in the fourth chamber 22, and the limiter 5 is used to limit the valve core 2. The adjusting rod 6 is disposed in the first chamber 11 along the sliding direction of the valve core 2, one end of the adjusting rod 6 penetrates into the fourth chamber 22 and is connected to the limiter 5, and the other end penetrates the sliding block 41 and the adjusting block 42 and passes out of the valve body 1. By manipulating the adjusting rod 6, the position of the limiter 5 along the sliding direction of the valve core 2 can be adjusted, so that the limiter 5 can play a better limiting effect, thereby better adjusting the flow of the medium.

[0045] For example, when the second opening 15 is completely connected with the first opening 14 through the groove 21, the medium flowing into the second chamber 12 from the second opening 15 can flow to the first opening 14 through the groove 21 and flow out from the first opening 14. If you want to reduce the flow of the medium, you can drive the valve core 2 to move through the first reversing component to reduce the connection size between the second opening 15 and the first opening 14, that is, the second opening 15 is only partially connected with the first opening 14 through the groove 21, so that the flow of the medium flowing out of the first opening 14 is reduced, and the flow regulation is achieved. The limiter 5 can limit the valve core 2, so that the valve core 2 cannot move further after moving to the corresponding position. Even if the fluid pressure provided by the first reversing component is much greater than the restoring force of the spring 3, the valve core 2 can still be in a static state, so that the flow can be changed while maintaining the stability of the flow.

[0046] The adjusting rod 6 passes through the middle of the adjusting block 42, so that when the adjusting block 42 rotates, the adjusting rod 6 is not affected. The adjusting rod 6 is slidably connected to the sliding block 41 and the adjusting block 42. The adjusting rod 6 can be adjusted manually or automatically by a motor or other components, so that different adjustment methods can be provided.

[0047] Furthermore, a locking member may be provided to lock the adjusting rod 6 and the adjusting block 42, so that when the worker turns the adjusting handle 43, the adjusting rod 6 and the limit member 5 can move synchronously with the adjusting block 42. There is no need to adjust the adjusting rod 6 separately, and the spacing between the limit member 5 and the adjusting block 42 can be kept constant, so that the distance that the second reversing assembly 4 can drive the valve core 2 to move remains unchanged. Of course, the locking member can also unlock the adjusting rod 6, and adjust the positions of the adjusting rod 6 and the limit member 5 separately to meet the needs of different working conditions. Among them, the locking member can be a conventional clamp provided on the adjusting block 42, which locks the adjusting rod 6 and the adjusting block 42 by clamping the adjusting rod 6. The locking member can also be any other structure or component that can lock or unlock the adjusting rod 6 and the adjusting block 42, and there is no mandatory limitation on this.

[0048] Sealing rings 7 are provided between the regulating rod 6 and the sliding block 41 , between the regulating rod 6 and the valve core 2 , and between the valve core 2 and the inner wall of the valve body 1 to prevent liquid leakage.

[0049] Flexible pads, specifically rubber pads, are provided on opposite sides of the limiter 5 along the sliding direction of the valve core 2. By providing the rubber pads, rigid impact between the limiter 5 and the valve core 2 is avoided, which helps to reduce noise and improve the service life of the manual-automatic integrated valve.

[0050] In some embodiments, the valve core 2 can be limited by the second reversing assembly 4 and the limit member 5 so that the valve core 2 can only move within a small range, and then the hydraulic oil is slowly introduced into the third chamber 18 through a small hydraulic pump, so as to achieve more precise position adjustment of the valve core 2 and further achieve precise control of the flow rate.

[0051] For example, Figure 4 As shown, the valve core 2 is first limited by the sliding block 41 and the limiting member 5 so that the valve core 2 is in the first state. The first reversing component drives the valve core 2 to slide by slowly introducing fluid (hydraulic oil) into the third chamber 18, thereby changing the connection size between the second opening 15 and the first opening 14 to achieve precise control of the flow rate. At this time, the manual-automatic integrated valve is in the third state. During the adjustment process, the valve core 2 is always in the first state. Even if the fluid pressure provided by the first reversing component fluctuates or even disappears, the second opening 15 and the first opening 14 can still be in a connected state. In addition, since the valve core 2 can only move within a small range, the distance between the valve core 2 and the sliding block 41 is always small during the movement of the valve core 2, that is, the space of the third chamber 18 is small. The first reversing component only needs to introduce a small amount of fluid to drive the valve core 2 to move, which is convenient for precise control of the medium flow rate, and the response speed of the valve core 2 is also fast.

[0052] Similarly, the valve core 2 can be limited by the sliding block 41 and the limit member 5 to put the valve core 2 in the second state. The first reversing component drives the valve core 2 to slide by slowly introducing fluid (hydraulic oil) into the third chamber 18, thereby changing the connection size between the second opening 15 and the third opening 16, thereby realizing precise control of the flow rate. At this time, the manual-automatic integrated valve is in the fourth state.

[0053] By setting the third state and the fourth state, it is helpful to achieve precise control of the medium flow rate under different medium flow directions.

Claims

1. A manual-automatic integrated valve, characterized in that: include: A valve body (1), a valve core (2), a spring (3), a first reversing component and a limiter (5); The valve body (1) has a first chamber (11) and a second chamber (12) inside; The valve core (2) is slidably connected to the valve body (1); the first end of the valve core (2) is located in the first chamber (11), and the second end is located in the second chamber (12); the second end of the valve core (2) is connected to the valve body (1) via the spring (3); the second chamber (12) is provided with a first opening (14), a second opening (15), and a third opening (16) in sequence along the axial direction; the valve core (2) is provided with a groove (21); the valve core (2) switches between the first state and the second state by sliding; In the first state, the second opening (15) is connected to the first opening (14) through the groove (21); In the second state, the second opening (15) is connected to the third opening (16) through the groove (21); The valve body (1) is provided with a fourth opening (17) communicating with the first chamber (11); the first reversing assembly is in communication with the fourth opening (17) and is used to introduce fluid into the first chamber (11) so that the fluid abuts against the first end of the valve core (2); The limiting member (5) is arranged in the valve body (1) and is used to limit the position of the valve core (2); the position of the limiting member (5) along the sliding direction of the valve core (2) is adjustable.

2. The manual-automatic integrated valve according to claim 1, characterized in that: The manual-automatic integrated valve further comprises a second reversing assembly (4), the second reversing assembly (4) comprising a sliding block (41) and an adjusting unit, the sliding block (41) being slidably connected to the inner wall of the first chamber (11), the adjusting unit being movably connected to the valve body (1), the adjusting unit being used to push the sliding block (41) so that the sliding block (41) abuts against the first end of the valve core (2); A third chamber (18) is formed between the sliding block (41) and the valve core (2), and the third chamber (18) is used to communicate with the fourth opening (17).

3. The manual-automatic integrated valve according to claim 2, characterized in that: The adjusting unit comprises an adjusting block (42) and an adjusting handle (43); the adjusting block (42) is threadedly connected to the valve body (1); one end of the adjusting block (42) abuts against the sliding block (41), and the other end passes through the valve body (1) and is connected to the adjusting handle (43).

4. The manual-automatic integrated valve according to claim 2, characterized in that: A strip groove (19) is provided on the inner wall of the first chamber (11), the strip groove (19) being arranged along the sliding direction of the valve core (2), and the strip groove (19) being used to connect the fourth opening (17) and the third chamber (18).

5. The manual-automatic integrated valve according to claim 3, characterized in that: The valve core (2) has a fourth chamber (22) inside, and the limiter (5) is slidably disposed in the fourth chamber (22); The manual-automatic integrated valve further comprises an adjusting rod (6), wherein the adjusting rod (6) is arranged in the first chamber (11) along the sliding direction of the valve core (2), one end of the adjusting rod (6) penetrates into the fourth chamber (22) and is connected to the stopper (5), and the other end thereof penetrates through the sliding block (41) and the adjusting block (42).

6. The manual-automatic integrated valve according to claim 5, characterized in that: The manual-automatic integrated valve has at least a third state and a fourth state; In the third state, the sliding block (41) and the limiting member (5) jointly limit the valve core (2) so that the valve core (2) is in the first state, and the first reversing component is used to drive the valve core (2) to slide so as to change the communication size between the second opening (15) and the first opening (14); In the fourth state, the sliding block (41) and the limiting member (5) jointly limit the valve core (2) so that the valve core (2) is in the second state, and the first reversing assembly is used to drive the valve core (2) to slide so as to change the communication size between the second opening (15) and the third opening (16).

7. The manual-automatic integrated valve according to claim 6, characterized in that: The manual-automatic integrated valve further comprises a locking member, which is used to lock the regulating rod (6) and the regulating block (42).

8. The manual-automatic integrated valve according to claim 5, characterized in that: Flexible pads are provided on opposite sides of the limiting member (5) along the sliding direction of the valve core (2).

9. The manual-automatic integrated valve according to claim 5, characterized in that: A sealing ring (7) is provided between the adjusting rod (6) and the sliding block (41).

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