Non-impact type electro-hydraulic control one-way valve

Abstract

The utility model discloses a non-impact type electro-hydraulic control one-way valve which comprises a valve body, a control piston is arranged at the position, close to one side, in the valve body, a limiting rod is fixedly connected to the center of one side of the control piston, a rubber block is fixedly installed at one end of the limiting rod, and an ejector rod is fixedly connected to the center of the other side of the control piston. According to the non-impact type electro-hydraulic control one-way valve, through rubber blocks, a connector, a first spring, a movable block, a buffer block, a rubber ball, a second spring and a third spring, after a piston is controlled to complete actions and reset, the rubber block at one end of a limiting rod is tightly attached to the inner wall of the valve body, and impact generated when the piston is reset is further buffered through elasticity of rubber; in the moving process of the ejector rod, the buffer block stably moves towards the cone valve element, the rubber ball on the buffer block serves as a flexible part making contact with the cone valve element firstly, and the impact force and noise generated when the rubber ball makes contact with the cone valve element are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a shockless electro-hydraulic control check valve. Background Technique

[0002] The shockless electro-hydraulic control check valve realizes precise control of the fluid flow direction through an electro-hydraulic control system, and reduces or eliminates fluid impact during the opening or closing process.

[0003] For many shockless electro-hydraulic control check valves on the current market, the components inside for resisting fluid impact often only rely on simple or buffer structures. Although these designs can slow down the impact to a certain extent, when facing complex and changeable working conditions and high-pressure and high-flow fluid environments, their anti-impact ability is insufficient. This single design may cause the valve to be unable to effectively suppress fluid impact under extreme conditions, thus affecting the stability and safety of the entire hydraulic system. Therefore, we propose a shockless electro-hydraulic control check valve. Content of the Utility Model

[0004] The purpose of the utility model is to provide a shockless electro-hydraulic control check valve to solve the problem that for many shockless electro-hydraulic control check valves on the current market, the components inside for resisting fluid impact often only rely on simple or buffer structures. Although these designs can slow down the impact to a certain extent, when facing complex and changeable working conditions and high-pressure and high-flow fluid environments, their anti-impact ability is insufficient. This single design may cause the valve to be unable to effectively suppress fluid impact under extreme conditions, thus affecting the stability and safety of the entire hydraulic system.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A shockless electro-hydraulic control check valve, including a valve body. A control piston is arranged at a position close to one side inside the valve body. A limiting rod is fixedly connected to the center of one side of the control piston. A rubber block is fixedly installed at one end of the limiting rod. A push rod is fixedly connected to the center of the other side of the control piston. A connecting head is fixedly connected to one end of the push rod. A buffer block is arranged on one side of the connecting head. A rubber ball is fixedly connected to one side of the buffer block. A movable block is fixedly connected to the center of the other side of the buffer block. A first spring is fixedly connected to one side inside the connecting head. A conical valve core is arranged on the other side inside the valve body. A second spring is fixedly connected to the center of the other side of the valve body inner wall. Third springs are fixedly connected to the upper and lower ends of the valve body inner wall corresponding to the second spring.

[0006] Compared with the prior art, the beneficial effects of the utility model are:

[0007] This shockless electro-hydraulic control one-way valve, through a rubber block, a connector, a first spring, a movable block, a buffer block, a rubber ball, a second spring and a third spring, when the control piston completes its action and resets, the rubber block at one end of the limit rod closely adheres to the inner wall of the valve body, and the elasticity of the rubber further buffers the impact when the piston resets. During the movement of the ejector rod, the buffer block moves smoothly towards the conical valve core, and the rubber ball on it, as the flexible component that first contacts the conical valve core, effectively reduces the impact force and noise when the two come into contact. At the same time, as the buffer block continues to push the conical valve core, the force is transmitted through the movable block to the first spring in the connector, causing the first spring to gradually compress. During this process, the energy storage effect of the spring further buffers the impact force. At the same time, the second spring and the third spring arranged on the conical valve core, when the conical valve core is pushed, not only provide additional supporting force, but also further disperse and absorb the impact force from the ejector rod and the buffer block through their elastic deformation. The combined action of this multiple elasticity not only enhances the stability of the conical valve core, but also significantly improves the shock resistance performance of the entire valve. Even under high-pressure or high-flow conditions, this shockless electro-hydraulic control one-way valve can maintain excellent performance and ensure the stable operation of the hydraulic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic structural diagram of the present invention;

[0009] Figure 2 is the present invention Figure 1 partial enlarged view of A in;

[0010] Figure 3 is a three-dimensional structural diagram of the ejector rod of the present invention;

[0011] Figure 4 is the front view of the structure of the present invention.

[0012] In the figure: 1, valve body; 2, control piston; 3, limit rod; 4, rubber block; 5, control port; 6, ejector rod; 7, connector; 8, first spring; 9, movable block; 10, buffer block; 11, guide groove; 12, guide block; 13, rubber ball; 14, conical valve core; 15, second spring; 16, third spring; 17, first infusion pipe; 18, second infusion pipe; 19, fourth spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0014] See also Figures 1-4 The utility model provides a technical solution: a shock-free electro-hydraulic controlled one-way valve, comprising a valve body 1, a control piston 2 is arranged at one side of the valve body 1, a limit rod 3 is fixedly connected to the center of one side of the control piston 2, a rubber block 4 is fixedly installed at one end of the limit rod 3, a push rod 6 is fixedly connected to the center of the other side of the control piston 2, a connector 7 is fixedly connected to one end of the push rod 6, a buffer block 10 is arranged on one side of the connector 7, a rubber ball 13 is fixedly connected to one side of the buffer block 10, a movable block 9 is fixedly connected to the center of the other side of the buffer block 10, a first spring 8 is fixedly connected to one side of the connector 7, a cone valve core 14 is arranged on the other side of the inside of the valve body 1, a second spring 15 is fixedly connected to the center of the other side of the inner wall of the valve body 1, and a third spring 16 is fixedly connected to the upper and lower ends of the inner wall of the valve body 1 corresponding to the second spring 15.

[0015] The control piston 2 contacts the inner wall of the valve body 1 through the sealing rings sleeved on both sides of its outer wall. One side of the rubber block 4 contacts the center of one side of the inner wall of the valve body 1, providing a certain buffering effect when the control piston 2 moves, reducing impact and noise.

[0016] A control port 5 is provided on one side of the bottom of the valve body 1, and a first infusion pipe 17 is fixedly connected to one side of the bottom of the valve body 1 corresponding to the control port 5, and a second infusion pipe 18 is fixedly connected to one side of the bottom of the valve body 1 corresponding to the first infusion pipe 17, forming a main channel for fluid in and out. This layout enables the valve to control the flow direction and flow rate of the fluid as needed to achieve the function of unidirectional flow. After the first infusion pipe 17 is passed with oil, the cone valve core 14 will move to the right, and the oil path from the first infusion pipe 17 to the second infusion pipe 18 will be connected. When oil is introduced through the control port 5, the push rod 6 moves to the right, and the first infusion pipe 17 and the second infusion pipe 18 are always kept in communication. After the second infusion pipe 18 is passed with oil, the oil path leading to the first infusion pipe 17 will be blocked by the cone valve core 14.

[0017] One side of the movable block 9 penetrates into the interior of the connecting head 7 and is fixedly connected to one end of the first spring 8, so that the movable block 9 can drive the first spring 8 to compress when subjected to external force, thereby utilizing the energy storage effect of the spring to buffer the impact force and make the opening or closing action of the cone valve core 14 smoother.

[0018] A guide groove 11 is provided on one side of the top and bottom of the buffer block 10, and a guide block 12 is fixedly connected to one side of the top and bottom of the connector 7. The bottom and top of the two guide blocks 12 extend to the inside of the two guide grooves 11 respectively and are slidably connected to the inner walls of the guide grooves 11, ensuring the stability and directionality of the buffer block 10 during movement and preventing it from deviating from the predetermined trajectory.

[0019] One end of the second spring 15 is fixedly connected to the center on one side of the conical valve body 1. One ends of two third springs 16 are respectively fixedly connected to the top and bottom on one side of the conical valve body 1, jointly providing additional support and buffering effects for the conical valve core 14, enabling the conical valve core 14 to have a smooth transition during the opening or closing process, reducing impact and vibration.

[0020] One side of the conical valve core 14 is in contact with and in a closed state with the valve seat fixedly installed inside the valve body 1. This is the key to achieving one-way flow. Both the top and bottom on one side of the control piston 2 are fixedly connected with fourth springs 19. One ends of the two fourth springs 19 are fixedly connected to the inner wall of the valve body 1, providing a restoring force for the control piston 2 to ensure that it can quickly and accurately return to the initial position after completing the action, preparing for the next action.

[0021] Working principle: In the non-operating state, the control piston 2 is located at the initial position inside the valve body 1. Through the sealing rings on both sides of its outer wall, it is in close contact with the inner wall of the valve body 1 to ensure sealing performance. At the same time, the rubber block 4 at the end of the limit rod 3 is in contact with the center of the inner wall of the valve body 1 to provide additional buffering effect. The conical valve core 14 is closely attached to the valve seat inside the valve body 1 to prevent reverse fluid flow. When hydraulic oil is introduced into the first infusion tube 17, the oil pressure pushes the conical valve core 14 to move to the right, enabling the oil path between the first infusion tube 17 and the second infusion tube 18 to be connected, allowing fluid to flow from the first infusion tube 17 to the second infusion tube 18. If hydraulic oil is injected into the valve body 1 through the control port 5, the oil pressure acts on the ejector rod 6, pushing it to move to the right. The movement of the ejector rod 6 drives the connector 7 and the buffer block 10 inside it to move to the right together. During this process, the rubber ball 13 on the buffer block 10 first contacts the conical valve core 14, using its flexibility and elasticity to reduce the impact force and suppress noise. As the buffer block 10 continues to move to the right, it pushes the conical valve core 14 to move further to the right. At the same time, the movable block 9 slides along the guide groove 11 and compresses the first spring 8. The compression energy storage effect of the first spring 8 effectively buffers the impact force, making the opening action of the conical valve core 14 more stable. At this time, the oil path between the first infusion tube 17 and the second infusion tube 18 remains unobstructed. If fluid is introduced from the second infusion tube 18, the oil pressure acts on the left side of the conical valve core 14. However, due to the sealing effect of the conical valve core 14 and the support of the second spring 15 and the third spring 16, the fluid cannot flow reversely into the first infusion tube 17, which ensures the one-way flow function of the valve. When the control signal is withdrawn or the oil pressure decreases, the control piston 2 quickly returns to the initial position under the action of the restoring force of the fourth spring 19, driving the ejector rod 6 and the buffer block 10 to return to their original positions at the same time. As the buffer block 10 moves to the left, the conical valve core 14 also slowly closes under the combined action of the second spring 15 and the third spring 16, and closely fits with the valve seat again, restoring the closed state of the valve.

[0022] In summary, for this shockless electro-hydraulic control check valve, through the rubber block 4, connector 7, first spring 8, movable block 9, buffer block 10, rubber ball 13, second spring 15 and third spring 16, after the control piston 2 completes its action and resets, the rubber block 4 at one end of the limit rod 3 closely adheres to the inner wall of the valve body 1, and the elasticity of the rubber further buffers the impact during the piston reset. During the movement of the ejector rod 6, the buffer block 10 moves smoothly towards the conical valve core 14, and the rubber ball 13 thereon, as a flexible component that first contacts the conical valve core 14, effectively reduces the impact force and noise when the two come into contact. At the same time, as the buffer block 10 continues to push the conical valve core 14, the force is transmitted through the movable block 9 to the first spring 8 inside the connector 7, causing the first spring 8 to gradually compress. During this process, the energy storage effect of the spring further buffers the impact force. At the same time, the second spring 15 and third spring 16 provided on the conical valve core 14, when the conical valve core 14 is pushed, not only provide additional supporting force, but also further disperse and absorb the impact force from the ejector rod 6 and the buffer block 10 through their elastic deformation. The combined action of this multiple elasticity not only enhances the stability of the conical valve core 14, but also significantly improves the shock resistance performance of the entire valve. Even under high-pressure or high-flow conditions, this shockless electro-hydraulic control check valve can maintain excellent performance and ensure the stable operation of the hydraulic system.

[0023] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0024] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shockless electro-hydraulic control one-way valve, comprising a valve body (1), characterized in that: A control piston (2) is arranged at a position close to one side inside the valve body (1). A limiting rod (3) is fixedly connected to the center of one side of the control piston (2). A rubber block (4) is fixedly installed at one end of the limiting rod (3). A push rod (6) is fixedly connected to the center of the other side of the control piston (2). A connecting head (7) is fixedly connected to one end of the push rod (6). A buffer block (10) is arranged on one side of the connecting head (7). A rubber ball (13) is fixedly connected to one side of the buffer block (10). An active block (9) is fixedly connected to the center of the other side of the buffer block (10). A first spring (8) is fixedly connected to one side inside the connecting head (7). A conical valve core (14) is arranged on the other side inside the valve body (1). A second spring (15) is fixedly connected to the center of the other side of the inner wall of the valve body (1). Third springs (16) are fixedly connected to the upper end and the lower end of the inner wall of the valve body (1) corresponding to the second spring (15).

2. The non-shock electro-hydraulic control one-way valve according to claim 1, wherein: The control piston (2) contacts the inner wall of the valve body (1) through the sealing rings sleeved on both sides of its outer wall. One side of the rubber block (4) contacts the center of one side of the inner wall of the valve body (1).

3. The non-impact electro-hydraulic control one-way valve according to claim 1, characterized in that: A control port (5) is opened on one side of the bottom of the valve body (1). A first infusion tube (17) is fixedly communicated with the side of the bottom of the valve body (1) corresponding to the control port (5). A second infusion tube (18) is fixedly communicated with the side of the bottom of the valve body (1) corresponding to the first infusion tube (17).

4. A non-impact electro-hydraulic control one-way valve according to claim 1, characterized in that: One side of the active block (9) penetrates into the inside of the connecting head (7) and is fixedly connected to one end of the first spring (8).

5. The non-shock electro-hydraulic control one-way valve according to claim 1, wherein: Guide grooves (11) are opened on one side of the top and the bottom of the buffer block (10). Guide blocks (12) are fixedly connected to the positions close to one side of the inner top and the inner bottom of the connecting head (7). The bottoms and the tops of the two guide blocks (12) respectively extend into the inside of the two guide grooves (11) and are slidably connected to the inner walls of the guide grooves (11).

6. The non-impact electro-hydraulic control one-way valve according to claim 1, characterized in that: One end of the second spring (15) is fixedly connected to the center of one side of the conical valve body (1). One ends of the two third springs (16) are respectively fixedly connected to the top and the bottom of one side of the conical valve body (1).

7. The non-impact electro-hydraulic control one-way valve according to claim 1, characterized in that: One side of the conical valve core (14) contacts the valve seat fixedly installed inside the valve body (1) and is in a closed state. Fourth springs (19) are fixedly connected to both the top and the bottom of one side of the control piston (2). One ends of the two fourth springs (19) are fixedly connected to the inner wall of the valve body (1).

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