High and medium pressure valve with valve element vibration reduction structure

Abstract

The utility model relates to the technical field of damping valves, and provides a high and medium pressure valve with a valve core damping structure, which comprises a buffer component, a valve core is fixedly mounted at the lower end of the buffer component, the buffer component comprises a buffer tube, a plurality of groups of exhaust holes are formed in the buffer tube, and piston discs are arranged at the upper end and the lower end in the buffer tube in a sliding manner. The upper ends of the two piston discs are each rotationally provided with two connecting rods, at the moment when water flow is introduced, the valve element is extruded through water pressure to drive the whole valve element to move upwards, then the two connecting rods at the upper end of the buffer pipe are driven to overturn upwards, and air in the buffer pipe is extruded through the piston discs at the upper end so that the air can be exhausted from exhaust holes; preliminary pressure dilution is conducted through buffering force of gas pressure intensity, when the two sets of connecting rods are turned upwards to be in a horizontal state, the two sets of connecting rods at the lower end drive the piston disc at the lower end to extrude air in the buffering pipe to conduct pressure dilution, and pressure is diluted layer by layer when inlet pressure changes rapidly in the buffering mode.

Description

Technical Field

[0001] This utility model relates to the field of vibration damping valve technology, and in particular to a high-pressure valve with a valve core vibration damping structure. Background Technology

[0002] With the rapid development of industrial production towards large-scale, high-efficiency, and intelligent manufacturing, and the continuous improvement of production process parameters, extremely stringent requirements are placed on the performance, reliability, and stability of high and medium pressure valves. Under high-pressure and high-speed fluid conditions, the valve core inside the valve is easily subjected to strong impact and scouring by the medium, which can lead to severe vibration. This vibration not only seriously affects the sealing performance of the valve, leading to a significant increase in the risk of medium leakage, but also exacerbates the wear of the valve core and other key components, significantly shortens the service life of the valve, and may even force the entire production system to shut down due to sudden failures, causing huge economic losses to enterprises.

[0003] A Chinese patent with publication number CN222122341U discloses a vibration damping and pressure reducing valve. When the inlet pressure is high, the fluid in the inlet will compress the valve core upward, thereby compressing the bellows. The gas in the bellows enters the pressure relief box through the hard pipe and squeezes the push plate. When the fluid pressure decreases, the push plate rebounds quickly under the action of the spring. However, the rebound speed of the push plate is slowed down by the action of the pressure relief rod. Furthermore, the vibration generated when the valve core collides with the valve body can be effectively reduced by the action of the third and second sealing gaskets.

[0004] Regarding the aforementioned technologies, when the inlet pressure changes rapidly, the gas inside the bellows enters the pressure relief box through the rigid pipe, pushing the push plate to move. However, due to factors such as the diameter of the rigid pipe and the gas flow resistance, the gas pressure relief speed may be limited, and it cannot respond to rapid pressure changes in a timely manner. As a result, the movement of the valve core cannot be buffered in a timely and effective manner, affecting the shock absorption effect and the overall performance of the valve. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a high-pressure valve with a valve core vibration reduction structure to solve the problem that the gas depressurization speed may be limited due to factors such as the pipe diameter of the rigid pipe and the gas flow resistance, and the valve cannot respond to rapid pressure changes in a timely manner.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a high-pressure valve with a valve core vibration damping structure, including a vibration damping valve, the vibration damping valve including a valve body, a valve cover fixedly installed at the upper end of the valve body, an outlet valve port opened on the side wall of the valve body, an inlet valve port opened at the lower end of the valve body, a valve stem installed through the upper end of the valve body, the lower end of the valve stem passing through the valve cover and fixedly installed with a fixed shell, a buffer shell slidably installed at the lower end of the fixed shell, a buffer assembly fixedly installed at the lower end of the buffer shell, a valve core fixedly installed at the lower end of the buffer assembly, the valve core being slidably connected to the valve body, the buffer assembly including a buffer tube, multiple sets of vent holes opened on the buffer tube, piston discs slidably arranged at both the upper and lower ends of the buffer tube, two sets of connecting rods rotatably installed at the upper ends of the two sets of piston discs, one set of connecting rods away from the piston discs being rotatably connected to the lower end of the buffer shell, and the other set of connecting rods away from the piston discs being rotatably connected to the valve core. When using the vibration damping valve, firstly, the inlet valve port of the vibration damping valve is... The inlet pipe is fixedly connected to the outlet pipe via a flange, and the outlet valve port is also fixedly connected to the outlet pipe via a flange. To prevent the valve core movement from being unable to be effectively buffered in time when water flows in, thus affecting the damping effect and the overall performance of the damping valve, the water pressure squeezes the valve core as it moves upwards. This causes the two sets of connecting rods at the upper end of the buffer tube to flip upwards, and the upper piston disc squeezes the air inside the buffer tube, causing it to be discharged from the vent. The initial pressure dilution is achieved through the buffering force of the gas pressure. When the two sets of connecting rods flip upwards to a horizontal position, the lower two sets of connecting rods drive the lower piston disc to squeeze the air inside the buffer tube, further diluting the pressure. Simultaneously, as the two sets of piston discs approach each other, the water pressure causes the buffer shell to slide inside the fixed shell for buffering. This buffering method gradually dilutes the pressure during rapid changes in inlet pressure, reducing the risk of damage to the valve core due to pressure.

[0007] Preferably, a circular hole is provided on the outer side of the valve body, which matches the outlet valve port. A threaded groove is provided at the upper end of the valve body, which matches the valve cover. A threaded groove is provided at the lower end of the valve body, which matches the inlet pipe. The valve body is fixedly connected to the inlet and outlet pipes through the threaded grooves and the threaded groove, which prevents leakage from the valve body.

[0008] Preferably, the valve stem is fixedly connected to the valve cover via the valve disc. The valve disc secures the valve stem to the valve cover, preventing the valve stem from shifting and causing damage to the internal structure of the valve body during pressure relief.

[0009] Preferably, the fixed shell has an annular groove inside, and multiple sets of elastic elements are fixedly installed inside the annular groove. The lower end of the elastic element is fixedly connected to the buffer shell, and the upper end of the buffer shell matches the annular groove. The upper end of the buffer shell is slidably connected to the annular groove. After the two sets of piston discs approach each other, the water flow pressure drives the valve core to move upward, causing the buffer shell to squeeze the elastic element inside the fixed shell to buffer the pressure. At the same time, it increases the flow rate of water through the outlet valve port, effectively releasing the pressure.

[0010] Preferably, the valve core has a circular groove inside, and multiple sets of damping blocks are fixedly installed inside the circular groove. A sliding piston disc is fixedly installed at the lower end of the damping block. The sliding piston disc is slidably connected to the inlet valve port. When water flows into the inlet valve port, the water pressure squeezes the valve core and drives the sliding piston disc to move upward. The pressure on the valve core is elastically buffered by the multiple sets of damping blocks. After buffering, the valve core moves upward to perform secondary pressure reduction.

[0011] Preferably, a bellows is fixedly installed between the buffer shell and the valve core. The buffer assembly is located inside the bellows. The valve core is squeezed by water pressure, which drives the valve core to move upward, thereby causing the bellows to fold upward and discharge the water through the outlet valve.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention proposes a high-pressure valve with a valve core vibration damping structure. When using this damping valve, the inlet valve port and inlet pipe are first fixedly connected via flanges, and the outlet valve port and outlet pipe are also fixedly connected via flanges. At the moment water flow is introduced, to prevent rapid changes in inlet pressure from hindering the valve core's movement and affecting the damping effect and overall valve performance, the water pressure squeezes the valve core, causing it to move upwards. This causes the two sets of connecting rods at the upper end of the buffer tube to flip upwards, squeezing the air inside the buffer tube through the upper piston disc, which then discharges the air from the vent. The initial pressure dilution is achieved through the buffering force of the gas pressure. When the two sets of connecting rods flip upwards to a horizontal position, the two sets of connecting rods at the lower end drive the lower piston disc to squeeze the air inside the buffer tube, further diluting the pressure. Simultaneously, as the two sets of piston discs approach each other, the water pressure causes the buffer shell to slide inside the fixed shell for buffering. This buffering method gradually dilutes the pressure during rapid changes in inlet pressure, reducing the risk of damage to the valve core due to pressure. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0015] Figure 1 The schematic diagram illustrates the overall structure according to one embodiment of the present invention. Figure 1 ;

[0016] Figure 2 The schematic diagram illustrates the overall structure according to one embodiment of the present invention. Figure 2 ;

[0017] Figure 3 The schematic diagram shows a valve body structure according to one embodiment of the present invention;

[0018] Figure 4 The diagram schematically shows an exploded view of the valve body interior according to one embodiment of the present invention.

[0019] Figure 5 The schematic diagram shows a cross-sectional view of the internal structure of a valve body according to one embodiment of the present invention.

[0020] Figure 6 The schematic diagram shows a cross-sectional view of a buffer assembly according to one embodiment of the present invention.

[0021] The following are the labeling elements in the diagram: 1. Vibration damping valve; 11. Valve body; 111. Circular hole; 112. Threaded groove one; 113. Threaded groove two; 12. Valve cover; 13. Valve stem; 131. Valve disc; 14. Inlet valve port; 15. Outlet valve port; 16. Fixed shell; 161. Annular groove; 162. Elastic element; 17. Buffer shell; 171. Bellows; 18. Buffer assembly; 181. Buffer tube; 1811. Vent hole; 182. Piston disc; 183. Connecting rod; 19. Valve core; 191. Circular groove; 192. Damping block; 193. Sliding piston disc. Detailed Implementation

[0022] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0023] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0024] According to one embodiment of the present invention, in conjunction with Figure 1-2 , Figure 4-6The diagram illustrates a high-pressure valve with a valve core vibration damping structure, comprising a vibration damping valve 1. The vibration damping valve 1 includes a valve body 11, a valve cover 12 fixedly mounted on the upper end of the valve body 11, an outlet valve port 15 opened on the side wall of the valve body 11, an inlet valve port 14 opened on the lower end of the valve body 11, a valve stem 13 extending through the upper end of the valve body 11, a fixed housing 16 fixedly mounted on the lower end of the valve stem 13 extending through the valve cover 12, a buffer housing 17 slidably mounted on the lower end of the fixed housing 16, a buffer assembly 18 fixedly mounted on the lower end of the buffer housing 17, and a valve core fixedly mounted on the lower end of the buffer assembly 18. 19. The valve core 19 is slidably connected to the valve body 11. The buffer assembly 18 includes a buffer tube 181, on which multiple sets of vent holes 1811 are opened. Piston discs 182 are slidably arranged at both the upper and lower ends of the buffer tube 181. Two sets of connecting rods 183 are rotatably installed at the upper ends of the two sets of piston discs 182. One set of connecting rods 183, with the end away from the piston disc 182, is rotatably connected to the lower end of the buffer shell 17. The other set of connecting rods 183, with the end away from the piston disc 182, is rotatably connected to the valve core 19. When using the vibration damping valve 1, firstly, the vibration damping valve... The inlet valve 14 of valve 1 is fixedly connected to the inlet pipe via a flange, and the outlet valve 15 is fixedly connected to the outlet pipe via a flange. To prevent the valve core 19 from failing to be effectively buffered in time when the inlet pressure changes rapidly, thus affecting the damping effect and the overall performance of the damping valve 1, when water flows into the inlet valve 14, the water pressure squeezes the valve core 19, causing the valve core 19 to move upwards. This, in turn, causes the two sets of connecting rods 183 at the upper end of the buffer tube 181 to flip upwards, and the upper piston disc 182 squeezes the buffer tube 181. The internal air is discharged from the exhaust port 1811, and the pressure is initially diluted by the buffering force of the gas pressure. When the two sets of connecting rods 183 are flipped upward to a horizontal state, the two sets of connecting rods 183 at the lower end drive the piston disc 182 at the lower end to squeeze the internal air of the buffer tube 181 for pressure dilution. At the same time, after the two sets of piston discs 182 approach each other, the water flow pressure drives the buffer shell 17 to slide inside the fixed shell 16 for buffering. Through this buffering method, the pressure is diluted layer by layer when the inlet pressure changes rapidly, reducing the possibility of damage to the valve core 19 due to pressure.

[0025] Combination Figure 2-3 As shown, a circular hole 111 is provided on the outer side of the valve body 11, which matches the outlet valve port 15. A threaded groove 112 is provided at the upper end of the valve body 11, which matches the valve cover 12. A threaded groove 113 is provided at the lower end of the valve body 11, which matches the inlet pipe. The valve body 11 is fixedly connected to the inlet and outlet pipes through the threaded grooves 1 and 2, which prevents leakage of the valve body 11.

[0026] Combination Figure 2As shown, the valve stem 13 is fixedly connected to the valve cover 12 via the valve disc 131. The valve disc 131 fixes the valve stem 13 to the valve cover 12, preventing the valve stem 13 from shifting and causing damage to the internal structure of the valve body 11 during pressure relief.

[0027] Combination Figure 4-5 As shown, the fixed shell 16 has an annular groove 161 inside, and multiple sets of elastic elements 162 are fixedly installed inside the annular groove 161. The lower end of the elastic element 162 is fixedly connected to the buffer shell 17, and the upper end of the buffer shell 17 matches the annular groove 161. The upper end of the buffer shell 17 is slidably connected to the annular groove 161. After the two sets of piston discs 182 approach each other, the water flow pressure drives the valve core 19 to move upward, causing the buffer shell 17 to squeeze the elastic element 162 inside the fixed shell 16 for pressure buffering. At the same time, it increases the flow rate of water through the outlet valve port 15, effectively releasing the pressure.

[0028] Combination Figure 4-5 As shown, a circular groove 191 is provided inside the valve core 19. Multiple sets of damping blocks 192 are fixedly installed inside the circular groove 191. A sliding piston disc 193 is fixedly installed at the lower end of the damping block 192. The sliding piston disc 193 is slidably connected to the inlet valve port 14. When water flows into the inlet valve port 14, the water pressure squeezes the valve core 19 and drives the sliding piston disc 193 to move upward. The pressure on the valve core 19 is elastically buffered by the multiple sets of damping blocks 192. After buffering, the valve core 19 moves upward to perform secondary pressure reduction.

[0029] Combination Figure 3 As shown, a bellows 171 is fixedly installed between the buffer shell 17 and the valve core 19. The buffer assembly 18 is located inside the bellows 171. The valve core 19 is moved upward by water pressure squeezing the valve core 19, which in turn causes the bellows 171 to fold upward, so that the water is discharged through the outlet valve port 15.

[0030] In this embodiment, during operation, the inlet valve 14 is first fixedly connected to the inlet pipe, and the outlet valve 15 is fixedly connected to the outlet pipe via flanges. When water flows into the inlet valve 14, the water pressure squeezes the valve core 19, causing it to move upwards. This, in turn, causes the two sets of connecting rods 183 at the upper end of the buffer tube 181 to flip upwards. The upper piston disc 182 squeezes the air inside the buffer tube 181, causing it to be discharged from the vent hole 1811, thus performing initial pressure dilution. When the two sets of connecting rods 183 flip upwards to a horizontal state, the lower two sets of connecting rods 183 drive the lower piston disc 181. 2. The air inside the squeeze buffer tube 181 is further diluted by pressure. At the same time, the water flow pressure drives the buffer shell 17 to slide inside the fixed shell 16, squeezing the elastic element 162 to buffer the pressure, increasing the flow rate of the outlet valve 15 to release the pressure. During this process, the damping block 192 in the circular groove 191 inside the valve core 19 drives the sliding piston disc 193 to elastically buffer the pressure on the valve core 19 to achieve secondary pressure reduction. The bellows 171 between the buffer shell 17 and the valve core 19 will also fold upward as the valve core 19 moves upward to assist the water flow to be discharged from the outlet valve 15.

[0031] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A high-pressure valve with a valve core vibration damping structure, characterized in that: The device includes a vibration damping valve, comprising a valve body, a valve cover fixedly mounted on the upper end of the valve body, an outlet valve port on the side wall of the valve body, an inlet valve port at the lower end of the valve body, a valve stem extending through the upper end of the valve body, a fixed housing fixedly mounted on the lower end of the valve stem through the valve cover, a buffer housing slidably mounted on the lower end of the fixed housing, a buffer assembly fixedly mounted on the lower end of the buffer housing, and a valve core fixedly mounted on the lower end of the buffer assembly, the valve core being slidably connected to the valve body. The buffer assembly includes a buffer tube with multiple sets of vent holes. Piston discs are slidably arranged at both the upper and lower ends of the buffer tube. Two sets of connecting rods are rotatably installed at the upper ends of the two sets of piston discs. One set of connecting rods is rotatably connected to the lower end of the buffer shell at the end away from the piston disc, and the other set of connecting rods is rotatably connected to the valve core at the end away from the piston disc.

2. A high-pressure valve with a valve core vibration damping structure according to claim 1, characterized in that: A circular hole is provided on the outer side of the valve body, which matches the outlet valve port. A threaded groove is provided at the upper end of the valve body, which matches the valve cover. A threaded groove is provided at the lower end of the valve body, which matches the inlet pipe.

3. A high-pressure valve with a valve core vibration damping structure according to claim 1, characterized in that: The valve stem is fixedly connected to the valve cover via a valve disc.

4. A high-pressure valve with a valve core vibration damping structure according to claim 1, characterized in that: The fixed shell has an annular groove inside, and multiple sets of elastic elements are fixedly installed inside the annular groove. The lower end of the elastic element is fixedly connected to the buffer shell, and the upper end of the buffer shell matches the annular groove. The upper end of the buffer shell is slidably connected to the annular groove.

5. A high-pressure valve with a valve core vibration damping structure according to claim 1, characterized in that: The valve core has a circular groove inside, and multiple sets of damping blocks are fixedly installed inside the circular groove. A sliding piston disc is fixedly installed at the lower end of the damping block, and the sliding piston disc is slidably connected to the liquid inlet valve port.

6. A high-pressure valve with a valve core vibration damping structure according to claim 5, characterized in that: A bellows is fixedly installed between the buffer housing and the valve core, and the buffer assembly is located inside the bellows.

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