A bidirectional damping adjustable check valve dynamic pressure relief structure

Abstract

The utility model relates to one -way valve technical field especially relates to a two -way adjustable damper one -way valve dynamic pressure -relief structure, including valve seat, the one side of valve seat is provided with valve body, and one end of valve body is provided with import end, and the side away from valve body of valve seat is provided with export end, and the inside of valve seat and valve body all are provided with main flow channel, and the both ends of main flow channel are linked with import end, export end respectively, the inside fixedly connected with sealing seat has recess on one side of sealing seat. Through the coordination design of adjusting bolt and rubber diaphragm, realize the positive direction damping's manual accurate fine adjustment, utilize the reverse deformation of rubber diaphragm and the dynamic viscosity regulation of magneto rheological fluid when medium reverse flow simultaneously, form two -way damping adaptation mechanism, both solve the problem that traditional one -way valve fixed throttle structure regulation precision is low, lacks effective reverse damping, and can also stabilize positive direction flow, buffer reverse impact pressure, promote one -way valve operating stability and working condition adaptability.

Description

Technical Field

[0001] This utility model relates to the field of one-way valve technology, and in particular to a dynamic pressure relief structure for a bidirectional damping adjustable one-way valve. Background Technology

[0002] As a core component in hydraulic, pneumatic, and other fluid control systems, check valves are primarily used to achieve unidirectional flow of media, prevent backflow, and ensure stable system operation. In practical applications, systems often face conditions such as media pressure fluctuations and flow rate changes. Therefore, check valves not only need to have reliable unidirectional sealing performance but also need to accommodate functions such as damping regulation and overpressure relief to adapt to complex operating conditions.

[0003] In existing traditional check valves, the forward damping adjustment mostly adopts a fixed throttling structure, resulting in low adjustment accuracy and the inability to manually fine-tune the damping magnitude according to actual working conditions, making it difficult to achieve stable forward flow control. At the same time, because check valves lack an effective reverse damping adjustment mechanism, when system pressure fluctuations cause the medium to flow in the opposite direction, impact pressure is easily generated, damaging system components and affecting operational stability. Currently, the overpressure relief structure on existing check valves is mostly mechanically triggered, and the damping adjustment and pressure relief functions are independent of each other, with low structural integration, resulting in slow response speed and the inability to dynamically adjust the pressure relief rate, which easily leads to sudden pressure changes, causing system vibration or damage. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bidirectional damping adjustable one-way valve dynamic pressure relief structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A bidirectional damping adjustable check valve dynamic pressure relief structure includes a valve seat, a valve body is provided on one side of the valve seat, an inlet end is provided at one end of the valve body, and an outlet end is provided on the side of the valve seat away from the valve body. Both the valve seat and the valve body have a main flow channel inside, and the two ends of the main flow channel are connected to the inlet end and the outlet end, respectively. A sealing seat is fixedly connected to the inside of the inlet end near the main channel. A groove is opened on one side of the sealing seat, and a steel ball valve core is embedded in the groove. One end of the steel ball valve core is connected to a compression spring, and one end of the compression spring is connected to the inner wall of the valve seat. A rubber diaphragm is provided in the annular area between the steel ball valve core and the compression spring. A throttling orifice is provided on the outer wall of the side of the rubber diaphragm away from the steel ball valve core. The throttling orifice gradually changes into an annular shape from the center of the rubber diaphragm to the edge.

[0006] Preferably, guide rings are symmetrically arranged on both sides of the rubber diaphragm, and the edges of the guide rings are press-fitted to the inner wall of the valve body.

[0007] Preferably, the valve body has a threaded hole on the side away from the valve seat, and an adjusting bolt is provided in the threaded hole. The end of the adjusting bolt passes through the threaded hole and is pressed against the outside of the rubber diaphragm. The outer surface of the adjusting bolt has annular scales that are evenly distributed along the circumference of the adjusting bolt.

[0008] Preferably, both the valve seat and the inner wall of the valve body are provided with mounting grooves, and a pressure relief branch is provided in the mounting groove. One end of the pressure relief branch is connected to the inlet end, and the other end is connected to the outlet end.

[0009] Preferably, a sealed chamber is provided in the middle of the outer surface of the pressure relief branch, the interior of the sealed chamber is filled with magnetorheological fluid, and an electromagnetic coil is wound around the outer wall of the sealed chamber.

[0010] Preferably, a pressure sensor is embedded in the inner wall of the inlet end, a microcontroller is embedded in the inner wall of the valve seat, the electromagnetic coil and the pressure sensor are both electrically connected to the microcontroller, and the microcontroller is electrically connected to an external power source of the valve seat.

[0011] Preferably, the steel ball valve core is made of neodymium iron boron permanent magnet material.

[0012] The beneficial effects of this utility model are: This invention achieves precise manual adjustment of positive damping through the coordinated design of adjusting bolts and rubber diaphragms. At the same time, it utilizes the reverse deformation of the rubber diaphragm when the medium flows in the opposite direction and the dynamic viscosity adjustment of the magnetorheological fluid to form a bidirectional damping adaptation mechanism. This not only solves the problems of low adjustment accuracy and lack of effective reverse damping in the fixed throttling structure of traditional check valves, but also stabilizes the positive flow and buffers the reverse impact pressure, significantly improving the operational stability and adaptability of check valves.

[0013] This invention integrates intelligent dynamic pressure relief and precise threshold adjustment functions into the valve body. It achieves rapid overpressure response through the linkage of pressure sensor, microcontroller and electromagnetic coil, and can dynamically adjust the pressure relief rate. With the help of the adjustment bolt with ring scale, the opening pressure can be set intuitively and accurately. It overcomes the defects of traditional one-way valves, such as slow mechanical pressure relief response, non-adjustable pressure relief rate, scattered functions and inconvenient operation. While improving the stability of pressure control, it also takes into account the compact structure and ease of use, and adapts to the intelligent and compact needs of fluid control systems. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a bidirectional damping adjustable check valve dynamic pressure relief structure proposed in this utility model. Figure 2 This is a cross-sectional schematic diagram of a bidirectional damping adjustable check valve dynamic pressure relief structure proposed in this utility model. Figure 3 This is a schematic diagram of the rubber diaphragm structure of a bidirectional damping adjustable one-way valve dynamic pressure relief structure proposed in this utility model.

[0015] In the picture: 1. Valve seat; 2. Valve body; 3. Inlet end; 4. Outlet end; 5. Main flow channel; 6. Sealing seat; 601. Steel ball valve core; 602. Compression spring; 603. Rubber diaphragm; 604. Throttling orifice; 605. Guide ring; 7. Adjusting bolt; 8. Pressure relief branch; 801. Sealed chamber; 802. Electromagnetic coil; 9. Pressure sensor; 10. Microcontroller. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0018] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0019] Example: Reference Figures 1-3 A dynamic pressure relief structure for a bidirectional damping adjustable one-way valve includes a valve seat 1, a valve body 2 on one side of the valve seat 1, an inlet end 3 at one end of the valve body 2, an outlet end 4 on the side of the valve seat 1 away from the valve body 2, and a main flow channel 5 opened inside both the valve seat 1 and the valve body 2, with the two ends of the main flow channel 5 connected to the inlet end 3 and the outlet end 4 respectively. A sealing seat 6 is fixedly connected to the inside of the inlet end 3 near the main channel 5. A groove is opened on one side of the sealing seat 6, and a steel ball valve core 601 is embedded in the groove. One end of the steel ball valve core 601 is connected to a compression spring 602, and one end of the compression spring 602 is connected to the inner wall of the valve seat 1. A rubber diaphragm 603 is provided in the annular area between the steel ball valve core 601 and the compression spring 602. A throttling orifice 604 is provided on the outer wall of the side of the rubber diaphragm 603 away from the steel ball valve core 601. The throttling orifice 604 gradually changes to an annular shape from the center of the rubber diaphragm 603 to the edge.

[0020] Guide rings 605 are symmetrically arranged on both sides of the rubber diaphragm 603, and the edge of the guide ring 605 is press-fitted to the inner wall of the valve body 2.

[0021] A threaded hole is provided on the side of the valve body 2 away from the valve seat 1. An adjusting bolt 7 is provided in the threaded hole. The end of the adjusting bolt 7 passes through the threaded hole and is pressed against the outside of the rubber diaphragm 603. The outer surface of the adjusting bolt 7 is provided with annular scales that are evenly distributed along the circumference of the adjusting bolt 7.

[0022] Both valve seat 1 and valve body 2 have mounting grooves on their inner walls. A pressure relief branch 8 is installed in the mounting groove. One end of the pressure relief branch 8 is connected to the inlet end 3, and the other end is connected to the outlet end 4.

[0023] A sealed chamber 801 is provided in the middle of the outer surface of the pressure relief branch 8. The interior of the sealed chamber 801 is filled with magnetorheological fluid, and an electromagnetic coil 802 is wound around the outer wall of the sealed chamber 801.

[0024] A pressure sensor 9 is embedded in the inner wall of the inlet end 3, and a microcontroller 10 is embedded in the inner wall of the valve seat 1. The electromagnetic coil 802 and the pressure sensor 9 are both electrically connected to the microcontroller 10, and the microcontroller 10 is electrically connected to the external power supply of the valve seat 1.

[0025] The 601 steel ball valve core is made of neodymium iron boron permanent magnet material.

[0026] In this embodiment, when the one-way valve is in normal flow state, the medium flows from the inlet end 3 into the main flow channel 5 inside the valve body 2. At this time, the medium pressure pushes the steel ball valve core 601 to one side to overcome the preload of the compression spring 602, and then moves to the right and leaves the groove of the sealing seat 6. At this time, the medium flows along the main flow channel 5 through the throttling orifice 604 of the rubber diaphragm 603, and finally flows out from the outlet end 4, realizing one-way flow. When the medium flows through the rubber diaphragm 603, the rubber diaphragm 603 is slightly deformed under the medium pressure, realizing fine-tuning damping. If it is necessary to increase the positive damping, the adjusting bolt 7 is manually turned into the threaded hole. During the movement, the adjusting bolt 7 pushes and squeezes the rubber diaphragm 603 radially, thereby squeezing the throttling orifice 604 during the deformation of the rubber diaphragm 603, reducing the flow cross-sectional area. If it is necessary to reduce the damping, the adjusting bolt 7 is loosened in the opposite direction, the rubber diaphragm 603 rebounds, the flow cross-sectional area increases, and thus the valve body 2 maintains stable positive flow control. At this time, the pressure relief branch 8 is closed, the magnetorheological fluid in the sealed chamber 801 has a high viscosity, and the damping constraint on the steel ball valve core 601 is strong, so the steel ball valve core 601 remains in the flow position of the main channel 5.

[0027] Specifically, during the continuous flow of the medium, the pressure sensor 9 at the inlet end 3 monitors the pressure at the inlet end 3 in real time. When the pressure at the inlet end 3 exceeds a preset threshold, the pressure sensor 9 transmits an overpressure signal to the microcontroller 10. Subsequently, the microcontroller 10 supplies current to the solenoid coil 802. When current is supplied to the solenoid coil 802, an external magnetic field opposite to the magnetic field of the steel ball valve core 601 is generated. The two cancel each other out, and the magnetic particles in the magnetorheological fluid change from a locally aggregated state to a dispersed state, significantly reducing the internal friction resistance. As a result, the viscosity of the magnetorheological fluid in the sealed chamber 801 decreases rapidly, thereby weakening the damping constraint of the steel ball valve core 601. At this time, the overpressure medium at the inlet end 3 pushes the steel ball valve core 601 to move further to the right. At this time, the pressure relief branch 8 is opened, and the medium is diverted from the main channel 5 into the pressure relief branch 8. Subsequently, part of the medium flows directly from the inlet end 3 to the outlet end 4 through the pressure relief branch 8, thereby quickly releasing the system pressure.

[0028] Furthermore, during the pressure relief process, the microcontroller 10 dynamically adjusts the current of the electromagnetic coil 802 in real time based on the real-time feedback from the pressure sensor 9, thereby changing the viscosity of the magnetorheological fluid. When pressure fluctuations cause the medium to flow in the opposite direction from the main channel 5 to the pressure relief branch 8, the medium pressure pushes the rubber diaphragm 603 to deform in the opposite direction. At the same time, the flow area of ​​the gradient throttling orifice 604 changes, creating a gap between the originally fitted rubber diaphragm 603 and the valve body 2, thus forming an additional reverse throttling channel. The medium flow through this channel is damped and regulated, thereby further controlling the flow rate. Simultaneously, the magnetorheological fluid maintains an appropriate viscosity under current regulation, thereby achieving dynamic adjustment of reverse damping. Subsequently, the pressurized medium is discharged through the pressure relief branch 8, completing the dynamic pressure relief. While the medium flows in reverse, the operator can indirectly adjust the preload of the compression spring 602 by rotating the adjusting bolt 7 to open or loosen the rubber diaphragm 603. As the adjusting bolt 7 moves, the depth of screwing in can be visually displayed through the annular scale on the outer surface, thereby setting or correcting the system's opening pressure threshold.

[0029] Furthermore, when the pressure at the inlet 3 drops to a safe range, the current to the electromagnetic coil 802 is cut off by the microcontroller 10. Subsequently, the viscosity of the magnetorheological fluid in the sealed chamber 801 returns to its initial state, and the damping constraint on the steel ball valve core 601 is enhanced. Under the action of the pre-tightening force, the compression spring 602 pushes the steel ball valve core 601 to the left, re-fitting into the groove of the sealing seat 6. The rubber diaphragm 603 rebounds and restores the positive damping function. At the same time, the pressure relief branch 8 is closed, and the valve body 2 returns to the normal one-way flow mode.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bidirectional damping adjustable one-way valve dynamic pressure relief structure, comprising a valve seat (1), wherein a valve body (2) is disposed on one side of the valve seat (1), characterized in that, The valve body (2) has an inlet end (3) at one end, and the valve seat (1) has an outlet end (4) on the side away from the valve body (2). Both the valve seat (1) and the valve body (2) have a main flow channel (5) inside. The two ends of the main flow channel (5) are connected to the inlet end (3) and the outlet end (4) respectively. A sealing seat (6) is fixedly connected to the inside of the inlet end (3) near the main channel (5). A groove is provided on one side of the sealing seat (6), and a steel ball valve core (601) is embedded in the groove. A compression spring (602) is connected to one end of the steel ball valve core (601), and one end of the compression spring (602) is connected to the inner wall of the valve seat (1). A rubber diaphragm (603) is provided in the annular area between the steel ball valve core (601) and the compression spring (602). A throttling orifice (604) is provided on the outer wall of the side of the rubber diaphragm (603) away from the steel ball valve core (601). The throttling orifice (604) gradually changes from the center of the rubber diaphragm (603) to the edge in an annular shape.

2. The bidirectional damping adjustable check valve dynamic pressure relief structure according to claim 1, characterized in that, The rubber diaphragm (603) is symmetrically provided with guide rings (605) on both sides, and the edge of the guide ring (605) is press-fitted to the inner wall of the valve body (2).

3. The bidirectional damping adjustable one-way valve dynamic pressure relief structure according to claim 1, characterized in that, The valve body (2) has a threaded hole on the side away from the valve seat (1). An adjusting bolt (7) is provided in the threaded hole. The end of the adjusting bolt (7) passes through the threaded hole and is pressed against the outside of the rubber diaphragm (603). The outer surface of the adjusting bolt (7) is provided with annular scales that are evenly distributed along the circumference of the adjusting bolt (7).

4. The bidirectional damping adjustable one-way valve dynamic pressure relief structure according to claim 1, characterized in that, The valve seat (1) and the valve body (2) are both provided with mounting grooves on their inner walls. A pressure relief branch (8) is provided in the mounting groove. One end of the pressure relief branch (8) is connected to the inlet end (3), and the other end is connected to the outlet end (4).

5. The bidirectional damping adjustable check valve dynamic pressure relief structure according to claim 4, characterized in that, A sealed chamber (801) is provided in the middle of the outer surface of the pressure relief branch (8). The sealed chamber (801) is filled with magnetorheological fluid, and an electromagnetic coil (802) is wound around the outer wall of the sealed chamber (801).

6. The bidirectional damping adjustable check valve dynamic pressure relief structure according to claim 5, characterized in that, A pressure sensor (9) is embedded in the inner wall of the inlet end (3), and a microcontroller (10) is embedded in the inner wall of the valve seat (1). The electromagnetic coil (802) and the pressure sensor (9) are both electrically connected to the microcontroller (10), and the microcontroller (10) is electrically connected to the external power supply of the valve seat (1).

7. The bidirectional damping adjustable check valve dynamic pressure relief structure according to claim 1, characterized in that, The ball valve core (601) is made of neodymium iron boron permanent magnet material.

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