A high-flow, high-pressure resistant two-position three-way solenoid valve structure

Abstract

This utility model provides a high-flow, high-pressure resistant two-position three-way solenoid valve structure, relating to the field of solenoid valve technology. It includes a valve body and a solenoid valve assembly. The solenoid valve assembly includes a connecting rod disposed within the valve body, a piston connected to the connecting rod, a polyurethane sealing ring on the piston, and a nitrile rubber ring on the piston. In this utility model, when the solenoid coil structure is energized, the iron core drives the connecting rod to move, and the piston moves accordingly. The polyurethane sealing ring and the nitrile rubber ring form a double seal, blocking or opening the fluid passage. The pressure balancing component responds synchronously. When the pressure inside the valve rises sharply, the high pressure pushes the moving block to compress the telescopic spring upwards, connecting the first and second vent ports. Pressure is reduced through the pressure relief pipe. After pressure balance, the telescopic spring resets, causing the moving block to close the vent port. Thus, the solenoid valve assembly achieves fluid flow control, and the pressure balancing component dynamically adjusts the pressure, ensuring stable operation under high-pressure conditions.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve technology, and in particular to a structure of a high-flow, high-pressure resistant two-position three-way solenoid valve. Background Technology

[0002] The high-flow, high-pressure resistant two-position three-way solenoid valve is a key component widely used in high-pressure fluid control systems. It controls the flow direction and on / off state of fluid through electromagnetic force and is suitable for industrial environments that require high pressure and flow. The structure of this solenoid valve is usually composed of valve body, coil, piston, etc. It has good sealing performance and stability and can work stably under high pressure and high flow conditions. It is widely used in hydraulic, pneumatic and other automation control fields.

[0003] However, in actual use, the following shortcomings still exist. For example, the existing two-position three-way solenoid valve structure is not conducive to achieving precise fluid switching and pressure stability under high pressure, ensuring efficient and safe system operation. Inaccurate fluid switching can easily lead to media crossflow, affecting the stability of system operation. For example, in chemical processes, it may cause material ratio errors, leading to product quality problems. Unstable pressure will aggravate valve body wear, reduce the life of seals, and increase the risk of leakage. High-pressure leakage may cause safety accidents, reduce system operating efficiency, and frequent pressure fluctuations and switching errors will increase energy consumption. At the same time, it may lead to frequent equipment start-ups and shutdowns, shortening equipment life and affecting the overall production progress.

[0004] Therefore, this utility model proposes a high-flow, high-pressure resistant two-position three-way solenoid valve structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-flow-rate, high-pressure-resistant two-position three-way solenoid valve structure.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a high-flow, high-pressure resistant two-position three-way solenoid valve structure, including a valve body, and further comprising: A solenoid valve assembly includes a connecting rod disposed within a valve body, a piston connected to the connecting rod, a polyurethane sealing ring disposed on the piston, a nitrile rubber ring disposed on the piston, an electromagnetic coil structure disposed at one end of the connecting rod, and an electromagnetic coil structure disposed on the side of the valve body near the iron core. A pressure balancing assembly includes a pressure relief pipe connected to a valve body, a movable block slidably connected inside the pressure relief pipe, a telescopic spring provided on the movable block, a first vent on the movable block, and a second vent on the side of the pressure relief pipe near the top.

[0007] Furthermore, a polytetrafluoroethylene guide ring is provided on the piston between the polyurethane sealing ring and the nitrile rubber ring.

[0008] The beneficial effects of adopting the above-mentioned further solution are as follows: the PTFE guide ring on the piston is located between the polyurethane sealing ring and the nitrile rubber ring. Its low friction characteristics can significantly reduce the direct contact wear between the piston and the valve body during the reciprocating motion. At the same time, the guide ring can accurately limit the radial displacement of the piston, ensure the coaxiality of the movement, and avoid uneven force on the sealing ring due to piston tilt. In addition, it can also prevent the two sealing rings from being squeezed and deformed under high pressure, maintain the geometric stability of the sealing element, thereby improving the overall sealing effect and the accuracy of piston movement, and ensuring reliable fluid flow control.

[0009] Furthermore, heat dissipation fins are provided on the outer side of the valve body near the electromagnetic coil structure.

[0010] The beneficial effects of adopting the above-mentioned further solution are: the heat dissipation fins near the outside of the electromagnetic coil structure of the valve body increase the contact area with the air and accelerate heat dissipation by utilizing the principle of air convection. When the electromagnetic coil is working, a large amount of heat is generated due to the current passing through it. The heat dissipation fins can quickly conduct the heat from the vicinity of the coil to the outside, preventing the coil temperature from being too high and reducing the magnetic performance, and avoiding the aging of the insulation material and shortening its service life.

[0011] Furthermore, one end of the telescopic spring is connected to the top of the pressure relief pipe, and the other end of the telescopic spring is connected to the moving block.

[0012] The beneficial effects of adopting the above-mentioned further solution are as follows: one end of the telescopic spring is fixed to the top of the pressure relief pipe, and the other end is connected to the moving block to form an elastic reset structure. When the pressure inside the valve rises sharply, the high-pressure fluid pushes the moving block to overcome the elastic force of the telescopic spring and move upward, so that the first vent and the second vent are connected. Excess fluid is discharged through the pressure relief pipe to reduce the pressure. After the pressure drops to the equilibrium value, the elastic force of the telescopic spring pushes the moving block downward in the opposite direction, closes the vent, and terminates the pressure relief.

[0013] Furthermore, the valve body is provided with a connecting assembly, the connecting assembly including a connection port connected to the valve body, and a first rubber gasket connected to the connection port.

[0014] The beneficial effects of adopting the above-mentioned further solution are: in the valve body connection assembly, the connection port is the connection hub with the external pipeline, the first rubber gasket and the second rubber gasket are located on different sealing surfaces of the connection port, and the elastic deformation of the rubber is used to fill the connection gap, thus doubly blocking the leakage path of high pressure fluid.

[0015] Furthermore, a second rubber pad is connected to the connection port, and a knob is rotatably connected to the connection port.

[0016] The beneficial effects of adopting the above-mentioned further solution are: when the knob is turned, its threaded structure generates axial pressure, which tightly presses the rubber gasket between the connecting surfaces, enhances the sealing pre-tightening force, improves the pressure resistance and sealing performance through double sealing, and ensures the firmness of the connection by taking advantage of the convenient operation of the knob, thus ensuring the stable connection of the fluid passage.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, when the electromagnetic coil structure is energized, the iron core drives the connecting rod to move, and the piston moves accordingly. The polyurethane sealing ring and the nitrile rubber ring form a double seal, blocking or opening the fluid channel. The pressure balancing component responds synchronously. When the pressure inside the valve rises sharply, the high pressure pushes the moving block to compress the telescopic spring and move it upward. The first discharge port and the second discharge port are connected, and the pressure is reduced by venting through the pressure relief pipe. After the pressure is balanced, the telescopic spring resets and drives the moving block to close the discharge port. In this way, the electromagnetic valve assembly realizes fluid on / off control, and the pressure balancing component dynamically adjusts the pressure to ensure stable operation under high pressure conditions. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a high-flow, high-pressure resistant two-position three-way solenoid valve according to the present invention. Figure 2 This is a structural cross-sectional view of a high-flow, high-pressure resistant two-position three-way solenoid valve according to the present invention. Figure 3 This is a schematic diagram of the solenoid valve assembly structure of a high-flow, high-pressure resistant two-position three-way solenoid valve according to the present invention. Figure 4 This is a schematic diagram of the pressure balance component structure of a high-flow, high-pressure resistant two-position three-way solenoid valve according to the present invention. Figure 5 This is a schematic diagram of the connection component structure of a high-flow, high-pressure resistant two-position three-way solenoid valve according to this utility model.

[0019] Figure label: 1. Valve body; 2. Solenoid valve assembly; 21. Connecting rod; 22. Piston; 23. Polyurethane sealing ring; 24. Polytetrafluoroethylene guide ring; 25. Nitrile rubber ring; 26. Iron core; 27. Solenoid coil structure; 28. Heat dissipation fins; 3. Pressure balancing assembly; 31. Pressure relief pipe; 32. Moving block; 33. Telescopic spring; 34. First vent; 35. Second vent; 4. Connecting components; 41. Connecting port; 42. First rubber pad; 43. Second rubber pad; 44. Knob. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-4 As shown, this embodiment provides a technical solution: a high-flow, high-pressure resistant two-position three-way solenoid valve structure, including a valve body 1, and further including: Solenoid valve assembly 2 includes a connecting rod 21 disposed in the valve body 1, a piston 22 connected to the connecting rod 21, a polyurethane sealing ring 23 disposed on the piston 22, a nitrile rubber ring 25 disposed on the piston 22, an electromagnetic coil structure 27 disposed at one end of the connecting rod 21, and an electromagnetic coil structure 27 disposed on the side of the valve body 1 near the iron core 26. The pressure balancing assembly 3 includes a pressure relief pipe 31 connected to the valve body 1. A movable block 32 is slidably connected inside the pressure relief pipe 31. A telescopic spring 33 is installed on the movable block 32. A first vent 34 is opened on the movable block 32. A second vent 35 is opened on the side of the pressure relief pipe 31 near the top. When the electromagnetic coil structure 27 is energized, the iron core 26 drives the connecting rod 21 to move, and the piston 22 moves accordingly. The polyurethane sealing ring 23 and the nitrile rubber ring 25 form a double seal, blocking or opening the fluid passage. The pressure balancing assembly 3 responds synchronously. When the pressure inside the valve rises sharply, the high pressure pushes the movable block 32 to compress the telescopic spring 33 and move it upward. The first vent 34 and the second vent 35 are connected, and the pressure is reduced by venting through the pressure relief pipe 31. After the pressure is balanced, the telescopic spring 33 resets and drives the movable block 32 to close the vent. In this way, the electromagnetic valve assembly 2 realizes fluid on / off control, and the pressure balancing assembly 3 dynamically adjusts the pressure to ensure stable operation under high pressure conditions.

[0022] The above solutions also have the problem of not being able to ensure a stable connection of the fluid passage when valve body 1 is connected to an external pipeline, such as... Figures 1-3As shown: A polytetrafluoroethylene (PTFE) guide ring 24 is disposed on the piston 22 between the polyurethane sealing ring 23 and the nitrile rubber ring 25. The PTFE guide ring 24 on the piston 22, positioned between the polyurethane sealing ring 23 and the nitrile rubber ring 25, significantly reduces direct contact wear between the piston 22 and the valve body 1 during reciprocating motion due to its low friction characteristics. Simultaneously, the guide ring precisely limits the radial displacement of the piston 22, ensuring coaxiality of movement and preventing uneven force distribution on the sealing rings due to piston 22 misalignment. Furthermore, it prevents the two sealing rings from deforming under high pressure, maintaining the stability of the seal. To improve stability and enhance the overall sealing effect and the accuracy of piston 22 movement, ensuring reliable fluid flow control, heat dissipation fins 28 are provided on the outer side of valve body 1 near electromagnetic coil structure 27. The heat dissipation fins 28 on the outer side of valve body 1 near electromagnetic coil structure 27 increase the contact area with air and accelerate heat dissipation by utilizing the principle of air convection. When electromagnetic coil is working, a large amount of heat is generated due to the current passing through it. The heat dissipation fins 28 can quickly conduct heat from the vicinity of the coil to the outside, preventing the coil temperature from being too high and reducing magnetic performance, and avoiding aging of insulation materials and shortening service life. like Figure 4 As shown, one end of the telescopic spring 33 is connected to the top of the pressure relief pipe 31, and the other end of the telescopic spring 33 is connected to the moving block 32. One end of the telescopic spring 33 is fixed to the top of the pressure relief pipe 31, and the other end is connected to the moving block 32 to form an elastic reset structure. When the pressure inside the valve rises sharply, the high-pressure fluid pushes the moving block 32 to move upward against the elastic force of the telescopic spring 33, so that the first vent 34 and the second vent 35 are connected. Excess fluid is discharged through the pressure relief pipe 31 to reduce the pressure. After the pressure drops to the equilibrium value, the elastic force of the telescopic spring 33 pushes the moving block 32 downward in the opposite direction to close the vent and terminate the pressure relief. like Figure 1 as well as Figure 5 As shown, a connecting assembly 4 is provided on the valve body 1. The connecting assembly 4 includes a connecting port 41 connected to the valve body 1. A first rubber gasket 42 is connected to the connecting port 41. In the connecting assembly 4 of the valve body 1, the connecting port 41 is the connection hub with the external pipeline. The first rubber gasket 42 and the second rubber gasket 43 are located on different sealing surfaces of the connecting port 41. The elastic deformation of the rubber fills the connection gap, doubly blocking the leakage path of high-pressure fluid. The second rubber gasket 43 is connected to the connecting port 41. A knob 44 is rotatably connected to the connecting port 41. When the knob 44 is rotated, its threaded structure generates axial pressure, which tightly presses the rubber gasket between the connecting surfaces, enhancing the sealing pre-tightening force. This not only improves the pressure resistance sealing performance through double sealing, but also ensures the firmness of the connection through the convenient operation of the knob 44, ensuring the stable connection of the fluid passage.

[0023] Working principle: like Figures 1-5As shown, the solenoid valve assembly 2 serves as the core control for fluid flow. When the solenoid coil structure 27 is energized, the iron core 26 generates electromagnetic force, driving the connecting rod 21 to move, which in turn drives the piston 22 to move. The polyurethane sealing ring 23 and the nitrile rubber ring 25 on the piston 22 form a double sealing structure, which blocks or opens the fluid passage by adhering to or separating from the sealing surface of the valve body 1. During this process, the polytetrafluoroethylene guide ring 24 plays a key role. Its low friction characteristics reduce the wear of the piston 22 during reciprocating motion, accurately limit radial displacement to ensure coaxiality, and prevent the two sealing rings from being squeezed and deformed under high pressure, ensuring sealing effect and action accuracy. The heat dissipation fins 28 on the outside of the solenoid coil structure 27 increase the heat dissipation area, accelerating the heat dissipation during coil operation and preventing excessive temperature from affecting magnetic performance or causing aging of insulation materials. The pressure balancing assembly 3 is responsible for dynamically adjusting the pressure inside the valve. When the pressure suddenly increases, the high-pressure fluid pushes the moving block 32 inside the pressure relief pipe 31 to move upward against the elastic force of the telescopic spring 33, so that the first vent 34 on the moving block 32 is connected to the second vent 35 of the pressure relief pipe 31. Excess fluid is discharged through the pressure relief pipe 31 to reduce pressure. When the pressure drops to the equilibrium value, the elastic restoring force of the telescopic spring 33 pushes the moving block 32 downward, closing the vent and terminating the pressure relief, forming an adaptive pressure regulation cycle. The connecting component 4 ensures reliable connection between the device and the external pipeline. The connecting port 41 serves as the connection hub. Through the double elastic sealing structure of the first rubber gasket 42 and the second rubber gasket 43, the connection gap is filled and the leakage path is blocked. When the knob 44 is turned, its threaded structure generates axial pressure, which tightly presses the rubber gasket between the connection surfaces, enhances the sealing pre-tightening force, improves the pressure resistance and sealing performance, and ensures the connection firmness, ultimately achieving stable operation under high pressure conditions.

[0024] 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 large flow high pressure resistant two-position three-way electromagnetic valve structure comprising a valve body (1), characterized in that, Also includes: The solenoid valve assembly (2) includes a connecting rod (21) disposed in the valve body (1), a piston (22) connected to the connecting rod (21), a polyurethane sealing ring (23) disposed on the piston (22), a nitrile rubber ring (25) disposed on the piston (22), an electromagnetic coil structure (27) disposed at one end of the connecting rod (21), and an electromagnetic coil structure (27) disposed on the side of the valve body (1) near the iron core (26). The pressure balancing assembly (3) includes a pressure relief pipe (31) connected to the valve body (1), a moving block (32) is slidably connected inside the pressure relief pipe (31), a telescopic spring (33) is provided on the moving block (32), a first vent (34) is provided on the moving block (32), and a second vent (35) is provided on the side of the pressure relief pipe (31) near the top.

2. The structure of a high-flow, high-pressure resistant two-position three-way solenoid valve according to claim 1, characterized in that: A polytetrafluoroethylene guide ring (24) is provided on the piston (22) between the polyurethane sealing ring (23) and the nitrile rubber ring (25).

3. The structure of a high-flow, high-pressure resistant two-position three-way solenoid valve according to claim 1, characterized in that: Heat dissipation fins (28) are provided on the outer side of the valve body (1) near the electromagnetic coil structure (27).

4. The large flow high pressure resistant two-position three-way electromagnetic valve structure according to claim 1, characterized in that: One end of the telescopic spring (33) is connected to the top of the pressure relief pipe (31), and the other end of the telescopic spring (33) is connected to the moving block (32).

5. The structure of a high-flow, high-pressure resistant two-position three-way solenoid valve according to claim 1, characterized in that: The valve body (1) is provided with a connecting component (4), the connecting component (4) includes a connecting port (41) connected to the valve body (1), and a first rubber pad (42) is connected to the connecting port (41).

6. The large flow high pressure resistant two-position three-way electromagnetic valve structure according to claim 5, characterized in that: A second rubber pad (43) is connected to the connection port (41), and a knob (44) is rotatably connected to the connection port (41).

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