A large flow stratified buffer hydraulic valve

Abstract

The utility model provides a kind of for large flow layered buffer hydraulic valve, it is related to hydraulic control technical field, including valve body, the outer surface top of valve body is fixedly connected with hydraulic storehouse, the inner surface sliding connection of hydraulic storehouse has piston slide plate, the bottom fixed connection of piston slide plate has buffer valve core, the middle part fixed connection of valve body has valve seat, the middle part of valve seat is provided with through hole, the bottom end of buffer valve core is penetrated to the inner surface of through hole.The utility model when liquid pressure effect, will be extruded to side pressure plate and lower pressing plate, make two respectively extruded buffer spring one and buffer spring two, simultaneously with the linkage of side pressure plate and lower pressing plate by means of push rod and push column, let them mutually provide damping between each other, this structural principle makes that buffer effect is better, and in buffering process, it will not be like comparative document as buffer groove is led through to influence valve closure, guarantees the normal closure function of valve.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic control technology, and in particular to a high-flow-rate stratified buffer pressure valve. Background Technology

[0002] A hydraulic valve is an automated component operated by pressurized oil. It is controlled by the pressurized oil in a regulating valve and is usually used in combination with a solenoid regulating valve. It can be used for remote control of the on / off of oil, gas, and water pipeline systems in hydropower stations. It is commonly used in hydraulic circuits for clamping, control, and lubrication.

[0003] In the prior art, such as Chinese Patent Publication No. CN214698559U, a hydraulic valve structure with a buffered hydraulic valve seat is disclosed, including a hydraulic chamber and a valve seat. A buffer block is fixedly connected to the bottom surface of the hydraulic chamber. A sliding port is opened at the center of the bottom surface of the buffer block. The top end of a sleeve is slidably connected to the sliding port. The bottom end of the sleeve is fixedly connected to the valve seat. A first flow channel and a second flow channel are respectively opened on both sides of the valve seat. A valve cavity is opened in the valve seat between the first flow channel and the second flow channel. Both the first flow channel and the second flow channel are connected to the valve cavity. A power piston is slidably connected to the oil cavity in the hydraulic chamber. A through hole is opened on the bottom surface of the oil cavity. The top end of a valve stem is fixedly connected to the bottom surface of the power piston. The bottom end of the valve stem passes through the through hole and the sleeve, is located in the valve cavity, and is fixedly connected to the valve block. A buffer cavity is opened in the valve block. This utility model has multiple buffer structures in the valve seat, which buffer the liquid in the valve seat and flow channels, avoiding excessive pressure in the valve seat, making it safer to use.

[0004] Although the buffer structure in the aforementioned patent has a certain effect in buffering and preventing excessive pressure in the valve seat, the following problems still exist: when the hemispherical bottom is pushed open, the buffer grooves on both sides will be connected, thus affecting the closing effect of the valve; at the same time, it uses two obliquely fixedly connected buffer plates to provide buffering for the inlet and outlet of the valve body, and the buffering effect provided by the plates themselves is limited. Moreover, a dead corner will appear inside the valve body on the side where the buffer plate is connected to the reinforcing rib, affecting the flow of liquid. Therefore, we propose a new type of buffer pressure valve for large flow stratified buffering. Utility Model Content

[0005] This invention proposes a high-flow-rate stratified buffer pressure valve that can ensure good buffering effect without affecting valve closing effect, and provides more effective buffering at the valve body inlet and outlet, resulting in smoother liquid flow, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-flow-rate stratified buffer pressure valve, comprising a valve body, a hydraulic chamber fixedly connected to the top of the outer surface of the valve body, a piston slide plate slidably connected to the inner surface of the hydraulic chamber, a buffer valve core fixedly connected to the bottom of the piston slide plate, a valve seat fixedly connected to the middle of the valve body, a through hole provided in the middle of the valve seat, the bottom end of the buffer valve core penetrating to the inner surface of the through hole, and buffer plate assemblies provided on both the left and right sides of the inner surface of the valve body.

[0007] The buffer valve core includes a closing valve column, which is fixedly connected to the bottom end of the piston slide plate. A cross groove is formed inside the lower part of the closing valve column. Side pressure plates are slidably connected to the four ends of the inner surface of the cross groove. A buffer spring is fixedly connected to the side of the side pressure plate near the inside of the closing valve column. The end of the buffer spring away from the side pressure plate is fixedly connected to the inner wall of the cross groove. A connecting groove is formed at the bottom end of the closing valve column. A lower pressure plate is slidably connected to the inner surface of the connecting groove. A second buffer spring is fixedly connected to the upper surface of the lower pressure plate. The top end of the second buffer spring is fixedly connected to the upper surface of the connecting groove.

[0008] Preferably, the top of the hydraulic chamber is fixedly connected to a cover, and oil pump connection ports are provided on both the upper and lower right sides of the outer surface of the hydraulic chamber.

[0009] Preferably, a push column is fixedly connected to the top center of the lower pressure plate, the top of the push column extends into the interior of the cross slide groove, and four push rods are movably connected in a ring array on the outer surface. The end of the push rod away from the push column is movably connected to the side of the side pressure plate.

[0010] Preferably, the buffer plate assembly includes a V-shaped guide plate, with two V-shaped guide plates slidably connected to the left and right sides of the inner surface of the valve body, and a sealing gasket fixedly connected to the outer surface of the V-shaped guide plate.

[0011] Preferably, a connecting slide is fixedly connected to the inner side of the V-shaped guide plate, and a limiting slide is slidably connected to the middle of the connecting slide. The two limiting slides are respectively fixedly connected to the left and right sides of the inner wall of the valve body.

[0012] Preferably, buffer springs three are fixedly connected to both the left and right sides of the limiting slide plate, and the end of the buffer spring three away from the limiting slide plate is fixedly connected to the inner surface of the V-shaped guide plate.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] 1. In this utility model, through the mutual cooperation between the side pressure plate, lower pressure plate, buffer spring one, buffer spring two, push rod and push column inside the buffer valve core, when liquid pressure is applied, the side pressure plate and lower pressure plate will be squeezed, causing them to squeeze buffer spring one and buffer spring two respectively. At the same time, the push rod and push column realize the linkage between the side pressure plate and lower pressure plate, allowing them to provide damping to each other. This structural principle makes the buffering effect better, and during the buffering process, it will not affect the valve closing due to the conduction of the buffer groove as in the prior art, thus ensuring the normal closing function of the valve.

[0015] 2. In this utility model, through the cooperation of the V-shaped guide plate, connecting slide column, limiting slide plate, and buffer spring in the buffer plate assembly, the V-shaped guide plate's design allows the liquid to flow smoothly on both sides, avoiding dead zones. When impacted by liquid, the V-shaped guide plate slides in the middle of the limiting slide plate via the connecting slide column, thereby compressing the buffer spring and utilizing its elasticity for buffering. Compared to the fixed buffer plate in the prior art, this structural principle provides more effective buffering for the valve body inlet and outlet while ensuring smooth liquid flow, making the hydraulic valve more convenient to use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the high-flow-rate stratified buffer pressure valve of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the valve body of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the buffer valve core of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the buffer plate assembly of this utility model.

[0020] Legend: 1. Valve body; 2. Hydraulic chamber; 3. Cover; 4. Oil pump connection port; 5. Piston slide plate; 6. Buffer valve core; 61. Closing valve column; 62. Cross slide groove; 63. Side pressure plate; 64. Buffer spring one; 65. Push rod; 66. Push column; 67. Connecting slide groove; 68. Lower pressure plate; 69. Buffer spring two; 7. Valve seat; 8. Buffer plate assembly; 81. V-shaped guide plate; 82. Sealing gasket; 83. Connecting slide column; 84. Limiting slide plate; 85. Buffer spring three. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a technical solution: It includes a valve body 1, a hydraulic chamber 2 fixedly connected to the top of the outer surface of the valve body 1, a cover 3 fixedly connected to the top of the hydraulic chamber 2, oil pump connection ports 4 on both the upper and lower right sides of the outer surface of the hydraulic chamber 2, a piston slide plate 5 slidably connected to the inner surface of the hydraulic chamber 2, a buffer valve core 6 fixedly connected to the bottom of the piston slide plate 5, a valve seat 7 fixedly connected to the middle of the valve body 1, a through hole provided in the middle of the valve seat 7, the bottom end of the buffer valve core 6 penetrating to the inner surface of the through hole, buffer plate assemblies 8 on both the left and right sides of the inner surface of the valve body 1, and the buffer valve core 6 including a closing valve column 61 fixedly connected to the bottom end of the piston slide plate 5. A cross groove 62 is opened inside the lower part of the closing valve column 61, and the inner surface of the cross groove 62... Side pressure plates 63 are slidably connected to all four ends. A buffer spring 64 is fixedly connected to the side of the side pressure plate 63 near the inside of the closing valve column 61. The end of the buffer spring 64 away from the side pressure plate 63 is fixedly connected to the inner wall of the cross groove 62. A connecting groove 67 is opened at the bottom end of the closing valve column 61. A lower pressure plate 68 is slidably connected to the inner surface of the connecting groove 67. A buffer spring 69 is fixedly connected to the upper surface of the lower pressure plate 68. The top of the buffer spring 69 is fixedly connected to the upper surface of the connecting groove 67. A push column 66 is fixedly connected to the top center of the lower pressure plate 68. The top of the push column 66 penetrates into the inside of the cross groove 62 and four push rods 65 are movably connected to the outer surface in a ring array. The end of the push rod 65 away from the push column 66 is movably connected to the side of the side pressure plate 63.

[0024] The overall effect achieved in Embodiment 1 is as follows: When liquid pressure acts on the buffer valve core 6, the liquid pressure simultaneously compresses the side pressure plate 63 and the lower pressure plate 68. Under pressure, the side pressure plate 63 moves into the cross groove 62, compressing the first buffer spring 64. The first buffer spring 64 deforms and generates elastic force, hindering the movement of the side pressure plate 63 and thus providing a buffering effect. Under pressure, the lower pressure plate 68 moves into the connecting groove 67, compressing the second buffer spring 69. The second buffer spring 69 deforms and generates elastic force, buffering the movement of the lower pressure plate 68. Simultaneously, the movement of the lower pressure plate 68 drives the push column 66 to rise. The push column 66 pushes the side pressure plate 63 through the push rod 65, causing the side pressure plate 63 and the lower pressure plate 68 to move in tandem, providing mutual damping and further enhancing the buffering effect. Furthermore, throughout the entire buffering process, the structure of the buffer valve core 6 does not lead to a situation similar to the conduction of the buffer groove in the comparative document, ensuring that the valve's closing effect is not affected.

[0025] Example 2: Figure 4 As shown, this utility model provides a technical solution: the buffer plate assembly 8 includes a V-shaped guide plate 81, two V-shaped guide plates 81 are slidably connected to the left and right sides of the inner surface of the valve body 1 respectively, a sealing gasket 82 is fixedly connected to the outer surface of the V-shaped guide plate 81, a connecting slide post 83 is fixedly connected to the inner side of the V-shaped guide plate 81, a limiting slide plate 84 is slidably connected to the middle of the connecting slide post 83, two limiting slide plates 84 are fixedly connected to the left and right sides of the inner wall of the valve body 1 respectively, and a buffer spring 85 is fixedly connected to both the left and right sides of the limiting slide plate 84, and the end of the buffer spring 85 away from the limiting slide plate 84 is fixedly connected to the inner surface of the V-shaped guide plate 81;

[0026] The overall effect achieved by Embodiment 2 is as follows: The shape design of the V-shaped guide plate 81 allows the liquid to flow smoothly on both sides of the V-shaped guide plate 81 when it flows through the inlet and outlet of the valve body 1, avoiding the generation of dead corners and ensuring the smooth flow of liquid. When the liquid impacts the V-shaped guide plate 81, the V-shaped guide plate 81 will move, causing the connecting slide column 83 to slide on the limiting slide plate 84. At this time, the buffer spring 85 will be squeezed, and the elasticity of the buffer spring 85 will hinder the movement of the V-shaped guide plate 81, thereby buffering the impact of the liquid. Compared with the fixed buffer plate in the prior art, this sliding V-shaped guide plate 81 combined with the buffer spring 85 can more effectively absorb the energy of the liquid impact, and the buffering effect is more significant.

[0027] The working principle of the entire device is as follows: When the hydraulic valve starts working, pressurized oil is introduced into the hydraulic chamber 2 through the oil pump connection port 4. The pressurized oil pushes the piston slide plate 5 to move up and down in the hydraulic chamber 2. The piston slide plate 5 drives the buffer valve core 6 to move synchronously, realizing the opening and closing between the buffer valve core 6 and the valve seat 7, thereby controlling the flow of liquid in the valve body 1. When the liquid flows in from the inlet of the valve body 1, it first contacts the V-shaped guide plate 81 in the buffer plate assembly 8. The impact force of the liquid causes the V-shaped guide plate 81 to slide on the limit slide plate 84 through the connecting slide column 83, squeezing the buffer spring 85. The elastic force of the buffer spring 85 initially buffers the impact force. At the same time, the V-shaped guide plate 81 guides the liquid to flow smoothly. After the initial buffering, the liquid continues to flow. When it contacts the buffer valve core 6, the liquid pressure will act on the side pressure plate 63 and the lower pressure plate 68. Under the action of pressure, the side pressure plate 63 moves into the cross slide groove 62. The compression of buffer spring 64 causes the lower pressure plate 68 to move into the connecting groove 67, compressing the second buffer spring 69. Both provide buffering. Simultaneously, the movement of the lower pressure plate 68 causes the push column 66 to rise. The push column 66 pushes the side pressure plate 63 through the push rod 65, causing the side pressure plate 63 and the lower pressure plate 68 to work together, providing mutual damping and further enhancing the buffering effect. This process does not affect the valve's closure. When the liquid flows out of the outlet of the valve body 1, it also passes through the buffer plate assembly 8 on the other side. The V-shaped guide plate 81 again buffers and guides the liquid, ensuring smooth flow. The cover 3 seals the hydraulic chamber 2, and the sealing gasket 82 enhances the sealing between the V-shaped guide plate 81 and the valve body 1, preventing liquid leakage. Through this working process, the entire hydraulic valve achieves layered buffering of large flow rates of liquid, ensuring both buffering and valve closure effects, while allowing for smoother liquid flow.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A high-flow-rate stratified buffer hydraulic valve, comprising a valve body (1), wherein a hydraulic chamber (2) is fixedly connected to the top of the outer surface of the valve body (1), characterized in that: The inner surface of the hydraulic chamber (2) is slidably connected to a piston slide plate (5), the bottom of the piston slide plate (5) is fixedly connected to a buffer valve core (6), the middle part of the valve body (1) is fixedly connected to a valve seat (7), the middle part of the valve seat (7) is provided with a through hole, the bottom end of the buffer valve core (6) extends through to the inner surface of the through hole, and buffer plate assemblies (8) are provided on both the left and right sides of the inner surface of the valve body (1). The buffer valve core (6) includes a closing valve column (61), which is fixedly connected to the bottom end of the piston slide plate (5). A cross groove (62) is provided inside the lower part of the closing valve column (61). Side pressure plates (63) are slidably connected to the four ends of the inner surface of the cross groove (62). A buffer spring (64) is fixedly connected to the side of the side pressure plate (63) near the inside of the closing valve column (61). The end of the buffer spring (64) away from the side pressure plate (63) is fixedly connected to the inner wall of the cross groove (62). A connecting groove (67) is provided at the bottom end of the closing valve column (61). A lower pressure plate (68) is slidably connected to the inner surface of the connecting groove (67). A buffer spring (69) is fixedly connected to the upper surface of the lower pressure plate (68). The top end of the buffer spring (69) is fixedly connected to the upper surface of the connecting groove (67).

2. The pressure valve for high-flow-rate stratified buffer according to claim 1, characterized in that: The top of the hydraulic chamber (2) is fixedly connected to a cover (3), and oil pump connection ports (4) are provided on the upper and lower sides of the right side of the outer surface of the hydraulic chamber (2).

3. A pressure valve for high-flow-rate stratified buffering according to claim 1, characterized in that: A push column (66) is fixedly connected to the top center of the lower pressure plate (68). The top of the push column (66) extends into the interior of the cross slide groove (62), and four push rods (65) are movably connected to the outer surface in a ring array. The end of the push rod (65) away from the push column (66) is movably connected to the side of the side pressure plate (63).

4. A pressure valve for high-flow-rate stratified buffering according to claim 1, characterized in that: The buffer plate assembly (8) includes a V-shaped guide plate (81), and two V-shaped guide plates (81) are slidably connected to the left and right sides of the inner surface of the valve body (1), respectively. A sealing gasket (82) is fixedly connected to the outer surface of the V-shaped guide plate (81).

5. A pressure valve for high-flow-rate stratified buffer according to claim 4, characterized in that: The inner side of the V-shaped guide plate (81) is fixedly connected to a connecting slide column (83), and the middle part of the connecting slide column (83) is slidably connected to a limiting slide plate (84). The two limiting slide plates (84) are respectively fixedly connected to the left and right sides of the inner wall of the valve body (1).

6. A pressure valve for high-flow-rate stratified buffer according to claim 5, characterized in that: Both sides of the limiting slide plate (84) are fixedly connected with buffer springs three (85), and the end of the buffer springs three (85) away from the limiting slide plate (84) is fixedly connected to the inner surface of the V-shaped guide plate (81).

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