A closed-loop air spring controlled solenoid valve

Abstract

This utility model provides a closed-loop air spring controlled solenoid valve, relating to the field of solenoid valve technology. The closed-loop air spring controlled solenoid valve includes an inlet pipe, a valve body connected to one side of the inlet pipe, and an outlet pipe connected to the other side of the valve body. The valve body has an internal throttling orifice, and a piston is located inside the throttling orifice. A spring chamber is formed on one side of the piston, and an air spring is located inside the spring chamber. A threaded groove is formed on the top of the spring chamber, and a fixing nut is threadedly connected to the inner wall of the threaded groove. The bottom surface of the fixing nut abuts against the top of the air spring. After the valve body has been used for a period of time, the air spring inside the valve body may lose its elasticity. At this time, the fixing nut can be rotated to remove the spring chamber, exposing the spring, allowing for replacement of the spring. An auxiliary device can be used to fix the piston, preventing the piston from moving upwards during air spring replacement and causing fluid leakage in the pipeline, thus improving safety during replacement.

Description

Technical Field

[0001] This application relates to the field of solenoid valve technology, and in particular to a closed-loop air spring controlled solenoid valve. Background Technology

[0002] A closed-loop air spring control solenoid valve is a pneumatic control component that integrates a closed-loop feedback control mechanism. It is primarily used in air spring systems such as vehicle suspensions and industrial equipment vibration damping devices. Through electromagnetic drive, it regulates the inflation and deflation processes of the air spring. Combined with real-time feedback from sensors, such as pressure and displacement, it achieves precise control over the air spring's stiffness, height, or pressure. Its core advantage lies in solving the problems of insufficient accuracy and weak anti-interference capability inherent in open-loop control through a closed-loop "monitoring-control-feedback" logic.

[0003] During frequent use of solenoid valves, the air spring may lose its elasticity and need to be replaced. However, replacing the spring in existing solenoid valves requires disassembling the entire valve body and severing the connection channels on both sides of the valve body to prevent the medium from flowing out, making the spring replacement quite troublesome. Utility Model Content

[0004] This application provides a closed-loop air spring controlled solenoid valve to solve the problems of solenoid valves.

[0005] This application provides a closed-loop air spring controlled solenoid valve, including an inlet pipe, a valve body connected to one side of the inlet pipe, and an outlet pipe connected to the other side of the valve body. The valve body has an internal throttling orifice with a piston inside. A spring chamber is located on one side of the piston, and an air spring is located inside the spring chamber. A threaded groove is located above the spring chamber, and a fixing nut is threaded onto the inner wall of the threaded groove. The bottom surface of the fixing nut abuts against the top of the air spring. Coils are located on both sides of the valve body, and an auxiliary device is located on one side of the valve body. After the valve body has been used for a period of time, the air spring inside the valve body may lose its elasticity. At this time, the fixing nut can be rotated out to expose the spring chamber, allowing the spring inside the spring chamber to be replaced. The auxiliary device can fix the piston, preventing the piston from moving upwards during air spring replacement and causing fluid leakage in the pipeline, thus improving the safety of replacement.

[0006] Preferably, the auxiliary device includes an adjusting sleeve rotatably connected to the side wall of the valve body, and the adjusting sleeve has a threaded chamber inside. The inner wall of the threaded chamber is threaded with a threaded plate, and the side wall of the threaded plate is fixedly connected with two pressure rods. One end of the pressure rod extends into the spring chamber. When replacing the air spring, the adjusting sleeve can be rotated, causing the threaded plate threaded to the threaded chamber inside the adjusting sleeve to move towards the valve body. The threaded plate will push the pressure rod into the spring chamber. At this time, the pressure rod that has slid into the spring chamber will be above the piston, thereby pressing the piston and preventing the piston from moving upward when removing the air spring, which facilitates the replacement of the air spring.

[0007] Preferably, the top of the pressure rod is provided with a guide slope. When the guide slope slides into the spring chamber, if the piston moves slightly upward due to the lack of spring force, the guide slope will slide along the side wall of the piston, pushing the upward-moving piston downward, so that the guide slope can press the piston and fix the position of the piston.

[0008] Preferably, rubber strips are fixedly connected to the side walls of both the adjusting sleeve and the fixing nut. By setting the rubber strips, the friction between the adjusting sleeve and the side wall of the fixing nut is increased, the anti-slip effect is improved, the adjusting sleeve and the fixing nut are easily rotated, and the ease of operation is improved.

[0009] Preferably, a spring groove is provided on the top surface of the piston. By providing the spring groove, the air spring is prevented from moving freely in the spring chamber, and the spring groove provides a certain limiting function.

[0010] Preferably, the bottom surface of the spring chamber is provided with a piston sealing gasket. By setting the piston sealing gasket, the sealing effect when the piston and the bottom surface of the air spring are in contact is improved, and the possibility of leakage is reduced.

[0011] Preferably, a fixed sealing gasket is provided inside the threaded groove. By providing a fixed sealing gasket, when the fixed nut is threadedly connected to the threaded groove, the fixed sealing gasket will be located at the connection between the threaded groove and the fixed nut, thereby improving the sealing performance.

[0012] Beneficial effects:

[0013] Considering the issues with solenoid valves, after a period of use, the air spring inside the valve body may lose its elasticity. In this case, the fixing nut can be rotated out to expose the spring chamber, allowing the spring inside to be replaced. An auxiliary device can be used to fix the piston, preventing the piston from moving upwards during air spring replacement and causing fluid leakage in the pipeline, thus improving the safety of the replacement process.

[0014] When replacing the air spring, the adjusting sleeve can be rotated to move the threaded plate connected to the threaded chamber inside the adjusting sleeve toward the valve body. The threaded plate will push the pressure rod into the spring chamber. At this time, the pressure rod that has slid into the spring chamber will be above the piston, thus pressing the piston and preventing the piston from moving upward when removing the air spring, making it easier to replace the air spring.

[0015] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a closed-loop air spring controlled solenoid valve according to the present invention.

[0018] Figure 2 This is one of the side view structural schematic diagrams of a closed-loop air spring controlled solenoid valve according to this utility model;

[0019] Figure 3 for Figure 2 Enlarged structural diagram of section A in the middle;

[0020] Figure 4 This is the second side view schematic diagram of a closed-loop air spring controlled solenoid valve according to the present invention;

[0021] Figure 5 for Figure 4 Enlarged structural diagram of section B in the middle.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Inlet pipe; 2. Outlet pipe; 3. Valve body; 4. Piston; 5. Spring chamber; 6. Air spring; 7. Threaded groove; 8. Fixing nut; 9. Coil; 10. Adjusting sleeve; 11. Threaded chamber; 12. Threaded plate; 13. Pressure rod; 14. Guide slope; 15. Rubber strip; 16. Spring groove; 17. Piston sealing gasket; 18. Fixing sealing gasket; 19. Throttling orifice. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0026] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0030] This utility model provides, for example Figure 1-5 The closed-loop air spring controlled solenoid valve shown includes an inlet pipe 1, a valve body 3 connected to one side of the inlet pipe 1, and an outlet pipe 2 connected to the other side of the valve body 3. The valve body 3 has a throttling orifice 19 inside, and a piston 4 inside the throttling orifice 19. A spring chamber 5 is opened on one side of the piston 4, and an air spring 6 is installed inside the spring chamber 5. A threaded groove 7 is opened on the top of the spring chamber 5, and a fixing nut 8 is threadedly connected to the inner wall of the threaded groove 7. The bottom surface of the fixing nut 8 abuts against the top of the air spring 6. Coils 9 are provided on both sides of the valve body 3, and an auxiliary device is provided on one side of the valve body 3.

[0031] When the valve body 3 has been used for a period of time, the air spring 6 in the valve body 3 will lose its elasticity. At this time, the fixing nut 8 can be rotated and removed to expose the spring chamber 5, and the spring in the spring chamber 5 can be replaced. The piston 4 can be fixed by the auxiliary device to prevent the piston 4 from moving upward when replacing the air spring 6, which would cause the fluid in the pipeline to leak out, thus improving the safety of the replacement.

[0032] The auxiliary device includes an adjusting sleeve 10 rotatably connected to the side wall of the valve body 3, and a threaded chamber 11 is provided inside the adjusting sleeve 10. A threaded plate 12 is threadedly connected to the inner wall of the threaded chamber 11, and two pressure rods 13 are fixedly connected to the side wall of the threaded plate 12. One end of the pressure rod 13 extends into the spring chamber 5.

[0033] When replacing the air spring 6, the adjusting sleeve 10 can be rotated so that the threaded plate 12 connected to the threaded chamber 11 inside the adjusting sleeve 10 moves toward the valve body 3. The threaded plate 12 will push the pressure rod 13 into the spring chamber 5. At this time, the pressure rod 13 that has slid into the spring chamber 5 will be above the piston 4, thereby pressing the piston 4 and preventing the piston 4 from moving upward when the air spring 6 is removed, which facilitates the replacement of the air spring 6.

[0034] The top of the pressure rod 13 is provided with a guide slope 14.

[0035] The guide ramp 14 is designed such that when the guide ramp 14 slides into the spring chamber 5, if the piston 4 moves slightly upward due to lack of elasticity, the guide ramp 14 will slide along the side wall of the piston 4, pushing the upward-moving piston 4 downward, so that the guide ramp 14 can press the piston 4 and fix the position of the piston 4.

[0036] Rubber strips 15 are fixedly connected to the side walls of the adjusting sleeve 10 and the fixing nut 8.

[0037] By setting the rubber strip 15, the rubber strip 15 will increase the friction between the adjusting sleeve 10 and the side wall of the fixing nut 8, improve the anti-slip effect, facilitate the rotation of the adjusting sleeve 10 and the fixing nut 8, and improve the ease of operation.

[0038] A spring groove 16 is provided on the top surface of piston 4.

[0039] The spring groove 16 is designed to prevent the air spring 6 from moving freely within the spring chamber 5, and the spring groove 16 provides a certain limiting function.

[0040] The bottom surface of the spring compartment 5 is provided with a piston sealing gasket 17.

[0041] By setting the piston sealing gasket 17, the sealing effect when the piston 4 and the bottom surface of the air spring 6 are in contact is improved, reducing the possibility of leakage.

[0042] The threaded groove 7 is provided with a fixed sealing gasket 18.

[0043] By setting a fixed sealing gasket 18, when the fixed nut 8 is threadedly connected to the threaded groove 7, the fixed sealing gasket 18 will be located at the connection between the threaded groove 7 and the fixed nut 8, thereby improving the sealing performance.

[0044] Working principle: When using this closed-loop air spring controlled solenoid valve, after the valve body 3 has been used for a period of time, the air spring 6 in the valve body 3 will lose its elasticity. At this time, the fixing nut 8 can be rotated and removed to expose the spring chamber 5, and the spring in the spring chamber 5 can be replaced. The piston 4 can be fixed by the auxiliary device to prevent the piston 4 from moving upward when replacing the air spring 6, which would cause the fluid in the pipeline to leak out, thus improving the safety of the replacement.

[0045] When replacing the air spring 6, the adjusting sleeve 10 can be rotated so that the threaded plate 12 connected to the threaded chamber 11 inside the adjusting sleeve 10 moves toward the valve body 3. The threaded plate 12 will push the pressure rod 13 into the spring chamber 5. At this time, the pressure rod 13 that has slid into the spring chamber 5 will be above the piston 4, thereby pressing the piston 4. This prevents the piston 4 from moving upward when the air spring 6 is removed, making it easier to replace the air spring 6.

[0046] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A closed loop air spring control solenoid valve comprising a water inlet pipe (1), characterized in that: A valve body (3) is connected to one side of the inlet pipe (1), and an outlet pipe (2) is connected to the other side of the valve body (3). A throttling orifice (19) is provided inside the valve body (3), and a piston (4) is provided inside the throttling orifice (19). A spring chamber (5) is provided on one side of the piston (4), and an air spring (6) is provided inside the spring chamber (5). A threaded groove (7) is provided above the spring chamber (5), and a fixing nut (8) is threadedly connected to the inner wall of the threaded groove (7). The bottom surface of the fixing nut (8) abuts against the top of the air spring (6). Coils (9) are provided on both sides of the valve body (3), and an auxiliary device is provided on one side of the valve body (3).

2. The closed loop air spring control solenoid valve according to claim 1, wherein: The auxiliary device includes an adjusting sleeve (10) rotatably connected to the side wall of the valve body (3), and a threaded chamber (11) is provided inside the adjusting sleeve (10). A threaded plate (12) is threadedly connected to the inner wall of the threaded chamber (11), and two pressure rods (13) are fixedly connected to the side wall of the threaded plate (12). One end of the pressure rod (13) extends into the spring chamber (5).

3. The closed loop air spring control solenoid valve of claim 2, wherein: The top end of the pressure rod (13) is provided with a guide slope (14).

4. The closed loop air spring control solenoid valve of claim 2, wherein: The adjusting sleeve (10) and the side wall of the fixing nut (8) are both fixedly connected with rubber strips (15).

5. The closed loop air spring control solenoid valve of claim 1, wherein: The piston (4) has a spring groove (16) on its top surface.

6. The closed loop air spring control solenoid valve of claim 1, wherein: The bottom surface of the spring compartment (5) is provided with a piston sealing gasket (17).

7. The closed loop air spring control solenoid valve of claim 1, wherein: The threaded groove (7) is provided with a fixed sealing gasket (18).

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