A new type of high-frequency high-voltage hydrogen solenoid valve

Abstract

The utility model relates to a novel high frequency high pressure hydrogen electromagnetic valve belongs to electromagnetic valve technical field. The electromagnetic valve includes valve body and magnetic conducting sleeve assembly, the magnetic conducting sleeve assembly coaxial assembly is fixed in the upside of valve body, and the outer periphery is equipped with coil and magnetic yoke fixedly, the inside upper half of magnetic conducting sleeve assembly is provided with the iron core, and the lower half is slidably connected with the valve core subassembly, the top of iron core is fixedly assembled with the exhaust valve, is provided with spring in the downside of exhaust valve, the bottom of spring and the top surface of valve core abut, and the bottom of exhaust valve is slidably connected with valve rod through composite bearing, and the outside of valve core is provided with a circle of support ring and is slidably connected with magnetic conducting sleeve assembly. The high frequency high pressure hydrogen electromagnetic valve designed through setting up composite bearing, support ring and other components reduces the direct friction of magnetic conducting sleeve assembly and valve core subassembly, reduces abrasion, prolongs the service life of electromagnetic valve.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, specifically to a novel high-frequency high-pressure hydrogen electromagnetic valve. Background Technology

[0002] Solenoid valves are widely used in modern pneumatic control systems. Most existing solenoid valves have a valve core that slides directly within an electromagnetic guide sleeve. Under the action of electromagnetic force and spring thrust, the valve core reciprocates, achieving rapid opening and closing. However, existing solenoid valve cores are generally designed with only sealing, resulting in direct friction between the magnetic guide sleeve assembly and the valve core assembly (as seen in patent CN114110174A). Over prolonged, high-frequency opening and closing operations, this direct friction causes damage to the valve core assembly and reduces the valve's lifespan. Furthermore, the inner cavity of the magnetic guide sleeve assembly in existing solenoid valves is a closed structure. When the valve core assembly reciprocates within this cavity, positive and negative air pressures can easily be generated, affecting the movement of the valve core assembly. Summary of the Invention

[0003] To address the problems in the existing technology, this utility model patent designs a novel high-frequency high-pressure hydrogen solenoid valve to solve the problem of the service life of existing solenoid valves being affected by friction damage after long-term use.

[0004] The technical solution adopted by this utility model is as follows: the solenoid valve includes a valve body and a magnetic sleeve assembly. The lower part of the valve body is a flow chamber, and a valve cavity is arranged vertically in the middle of the valve body. The valve cavity communicates with the flow chamber. The magnetic sleeve assembly is coaxially assembled and fixed on the upper side of the valve body with the valve cavity. A coil assembly and a magnetic yoke are sleeved and fixed on the outer periphery of the magnetic sleeve assembly. An iron core is fixedly arranged in close contact with the inner wall on the upper half of the inner side of the magnetic sleeve assembly, and a valve core is slidably connected to the lower half. A support ring is embedded in the outer periphery of the valve core. An exhaust valve is fixedly assembled at the top of the internal cavity of the iron core. A spring is arranged on the lower side of the exhaust valve. The bottom end of the spring abuts against the top surface of the valve core. A composite bearing is assembled and fixed at the bottom opening of the exhaust valve and connected to the top of the valve stem through the composite bearing.

[0005] Furthermore, the magnetic sleeve assembly includes a guide sleeve, the iron core is fixed on the inner wall of the guide sleeve, and an annular stepped fixing plate is integrally formed on the outer side of the bottom end of the guide sleeve, and is assembled and fixed to the valve body through the fixing plate. An O-ring is provided between the bottom surface of the fixing plate and the valve body.

[0006] Furthermore, the inner side of the bottom opening of the iron core is formed into a stepped inner wall, and a magnetic shielding sleeve is fixed on the surface of the stepped inner wall.

[0007] Furthermore, a blind hole is opened at the center of the top surface of the valve core, the valve stem is pressed and fixed in the blind hole, and the spring is sleeved on the outside of the valve stem, with the bottom end of the spring abutting against the top surface of the valve core.

[0008] Furthermore, a sealing block is embedded and fixed at the center of the bottom surface of the valve core.

[0009] Furthermore, the flow chamber at the lower part of the valve body includes an air inlet chamber, an intermediate chamber, and an air outlet chamber. The air inlet chamber includes a horizontal air inlet section. The inner end of the horizontal air inlet section is connected to a vertical air inlet section that communicates upward with the intermediate chamber at the center of the valve body. The diameter of the vertical air inlet section is smaller than that of the horizontal air inlet section. Its air outlet end forms a conical air outlet in the intermediate chamber. The intermediate chamber has a vertical air outlet section that communicates downward with the air outlet chamber on the side away from the air inlet chamber. The bottom surface of the valve core is pressed against the top surface of the conical air outlet under the thrust of the spring, and the conical air outlet is closed.

[0010] Furthermore, an O-ring is also provided on the outside of the exhaust valve to form a seal with the inner wall of the iron core, and an O-ring is embedded and fixed on the outside of the iron core to form a seal with the inner wall of the guide sleeve.

[0011] Compared to existing technologies, the advancements of this novel high-frequency high-pressure hydrogen solenoid valve, as designed in this utility model patent, lie in the following: the valve stem tip of the solenoid valve is slidably connected to the exhaust valve via a composite bearing; a support ring is provided on the outer periphery of the valve core and slidably connected to the inner wall of the guide sleeve. This effectively reduces direct frictional contact between the valve core assembly and the magnetic sleeve assembly, minimizing frictional damage to both and significantly extending the service life of the solenoid valve. Furthermore, the magnetic sleeve assembly features an exhaust valve at the top of its iron core. When the valve core assembly moves, this valve creates a flow channel for the gas within the inner cavity of the magnetic sleeve assembly, preventing positive and negative pressure from affecting the movement of the valve core assembly, thus improving the solenoid valve's response speed. Simultaneously, it effectively prevents external dust from entering the inner cavity. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a new type of high-frequency high-pressure hydrogen solenoid valve.

[0013] Figure 2 This is a structural schematic diagram of the magnetic sleeve assembly.

[0014] Figure 3 This is a structural schematic diagram of the valve core assembly. In the diagram, 1 is the valve body, 2 is the magnetic sleeve assembly, 3 is the coil assembly, 4 is the valve core assembly, 5 is the spring, 6 is the O-ring seal, 11 is the air inlet chamber, 12 is the intermediate chamber, 13 is the air outlet chamber, 14 is the vertical air inlet section, 15 is the conical air outlet, 21 is the guide sleeve, 22 is the iron core, 23 is the exhaust valve, 24 is the magnetic shielding sleeve, 25 is the composite bearing, 26 is the fixed plate, 31 is the coil, 32 is the magnetic yoke, 33 is the base plate, 34 is the screw, 35 is the spring washer, 41 is the valve core, 42 is the valve stem, 43 is the sealing block, and 44 is the support ring. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0016] like Figure 1 , 2 As shown in Figure 3, this utility model patent designs an embodiment of a novel high-frequency high-pressure hydrogen solenoid valve. In this embodiment, the solenoid valve includes a valve body 1, a magnetic sleeve assembly 2, a coil assembly 3, and a valve core assembly 4. A hydrogen flow chamber is opened in the lower part of the valve body 1, and a valve cavity is arranged vertically in the middle of the valve body 1, which communicates with the flow chamber. The magnetic sleeve assembly 2 is coaxially arranged with the valve cavity of the valve body 1 and assembled and fixed on the upper side of the valve body 1. The coil assembly 3 is fixedly sleeved on the outer periphery of the magnetic sleeve assembly 2. The valve core assembly 4 is slidably connected to the inner side of the magnetic sleeve assembly 2, and the bottom end of the valve core assembly 4 extends into the valve body 1 to control the opening and closing of the hydrogen flow chamber.

[0017] The flow chamber at the lower part of the valve body 1 includes an air inlet chamber 11, an intermediate chamber 12, and an air outlet chamber 13. The air inlet chamber 11 includes a horizontal air inlet section. The inner end of the horizontal air inlet section is connected to a vertical air inlet section 14 that communicates upward with the intermediate chamber 12 at the center of the valve body. The diameter of the vertical air inlet section 14 is smaller than that of the horizontal air inlet section. Its air outlet end forms a conical air outlet 15 in the intermediate chamber 12. The intermediate chamber 12 is provided with a vertical air outlet section 16 that communicates downward with the air outlet chamber 13 on the side away from the air inlet chamber 11. The diameter of the vertical air outlet section 16 is larger than that of the vertical air inlet section 14.

[0018] The magnetic sleeve assembly 2 includes a guide sleeve 21. An annular, stepped fixing plate 26 is integrally formed on the outer bottom end of the guide sleeve 21, and is assembled and fixed to the valve body 1 via the fixing plate 26. An O-ring seal 6 is provided between the bottom surface of the fixing plate 26 and the valve body 1. An iron core 22 is fixedly mounted on the upper inner side of the guide sleeve 21, closely adhering to the inner wall. An O-ring seal 6 is embedded and fixed on the outer side of the iron core 22, forming a seal with the inner wall of the guide sleeve 21. An exhaust valve 23 is fixedly assembled at the top of the internal cavity of the iron core 22. An O-ring seal 6 is also embedded on the outer surface of the exhaust valve 23, providing a sealed connection with the inner core 22. The inner side of the bottom opening of the iron core 22 forms a stepped inner wall, and a magnetic shielding sleeve 22 is fixed to the surface of the stepped inner wall. The valve core assembly 4 is slidably connected to the lower inner side of the guide sleeve 21, with a movement space between the top surface of the valve core 41 of the valve core assembly 4 and the bottom end of the iron core 22. The bottom of the exhaust valve 23 has a telescopic cavity along the axis, and a composite bearing 25 is assembled and fixed at the bottom opening. A spring 5 is installed in the cavity inside the iron core 22. The top of the spring 5 abuts against the bottom surface of the exhaust valve 23, and the bottom end abuts against the top surface of the valve core 41. Under the thrust of the spring 5, the bottom surface of the valve core assembly 4 presses against the top surface of the conical air outlet 15 of the vertical air inlet section 14 of the air inlet chamber 11 of the valve body 1, and closes the conical air outlet 15.

[0019] The valve core assembly 4 includes a valve core 41 and a valve stem 42. A groove is formed around the outer wall of the valve core 41, and a support ring 44 is fixed within the inner ring of the groove. The support ring 44 is slidably connected to the inner wall of the guide sleeve 21. A blind hole is formed at the center of the top surface of the valve core 41, and the bottom of the valve stem 41 is pressed and fixed in the blind hole. A spring 5 is sleeved on the outside of the valve stem 41. The top of the valve stem 41 is inserted into the bottom cavity of the exhaust valve 23 and is slidably connected to the exhaust valve 23 via a composite bearing 25. A sealing block 43 is embedded and fixed at the center of the bottom surface of the valve core 41. The sealing block 43 is used to seal the conical air outlet 15.

[0020] The coil assembly 3 includes a coil 31 and a magnetic yoke 32. The magnetic yoke 32 is assembled on the top of the coil 31 by screws 34 and spring washers 35. The support housing of the coil 31 is directly sleeved on the outside of the guide sleeve 21, and an annular base plate 33 is provided at its bottom end.

[0021] When the novel high-frequency high-pressure hydrogen solenoid valve provided by this utility model patent is applied, in the power-off state, under the elastic force of the spring 5, the sealing block 43 at the center of the bottom surface of the valve core 41 is tightly fitted with the conical outlet 15 of the air inlet chamber 11, forming a seal, and hydrogen cannot pass through; in the power-on state, the coil assembly 3 causes the iron core 22 of the magnetic sleeve assembly 2 to generate magnetic force, thereby attracting the valve core 41 to move upward against the elastic force of the spring 5, so that the sealing block 43 on the bottom surface of the valve core 41 leaves the conical outlet 15, and the gas flow chamber of the valve body 1 is connected.

[0022] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the claims and description of the present invention shall still fall within the scope of the present invention.

Claims

1. A novel high frequency high voltage hydrogen solenoid valve characterized by, The solenoid valve includes a valve body and a magnetic sleeve assembly. The lower part of the valve body is a flow chamber, and a valve cavity is vertically arranged in the middle of the valve body. The valve cavity communicates with the flow chamber. The magnetic sleeve assembly is coaxially assembled and fixed to the upper side of the valve body with the valve cavity. A coil assembly and a magnetic yoke are fixedly fitted around the outer periphery of the magnetic sleeve assembly. An iron core is fixedly arranged in close contact with the inner wall on the upper half of the inner side of the magnetic sleeve assembly, and a valve core is slidably connected to the lower half. A support ring is embedded in the outer periphery of the valve core. An exhaust valve is fixedly assembled at the top of the internal cavity of the iron core. A spring is arranged on the lower side of the exhaust valve. The bottom end of the spring abuts against the top surface of the valve core. A composite bearing is assembled and fixed at the bottom opening of the exhaust valve and connected to the top of the valve stem through the composite bearing.

2. A novel high-frequency high-pressure hydrogen solenoid valve according to claim 1, characterized in that, The magnetic sleeve assembly includes a guide sleeve, the iron core is fixed on the inner wall of the guide sleeve, and an annular stepped fixing plate is integrally formed on the outer side of the bottom end of the guide sleeve. The fixing plate is assembled and fixed to the valve body, and an O-ring is provided between the bottom surface of the fixing plate and the valve body.

3. A novel high-frequency high-voltage hydrogen solenoid valve according to claim 2, characterized in that, The bottom opening of the iron core has a stepped inner wall, and a magnetic shielding sleeve is fixed on the surface of the stepped inner wall.

4. A novel high-frequency high-voltage hydrogen solenoid valve according to claim 3, characterized in that, A blind hole is opened at the center of the top surface of the valve core, the valve stem is pressed and fixed in the blind hole, and the spring is sleeved on the outside of the valve stem.

5. A novel high-frequency high-voltage hydrogen solenoid valve according to claim 4, characterized in that, A sealing block is embedded and fixed at the center of the bottom surface of the valve core.

6. A novel high-frequency high-voltage hydrogen solenoid valve according to claim 5, characterized by The flow chamber at the bottom of the valve body includes an inlet chamber, an intermediate chamber, and an outlet chamber. The inlet chamber includes a horizontal inlet section. The inner end of the horizontal inlet section is connected to a vertical inlet section that communicates upward with the intermediate chamber at the center of the valve body. The diameter of the vertical inlet section is smaller than that of the horizontal inlet section. Its outlet end forms a conical outlet in the intermediate chamber. The intermediate chamber has a vertical outlet section that communicates downward with the outlet chamber on the side away from the inlet chamber. The bottom surface of the valve core is pressed against the top surface of the conical outlet under the thrust of the spring, thus sealing the conical outlet.

7. A novel high-frequency high-voltage hydrogen solenoid valve according to claim 6, characterized by The outer side of the exhaust valve is also provided with an O-ring seal to form a seal with the inner wall of the iron core, and the outer side of the iron core is embedded with an O-ring seal to form a seal with the inner wall of the guide sleeve.

Images