Solenoid valve structure

Abstract

The utility model discloses an electromagnetic valve structure which comprises a body, a medium flow channel is arranged in the body, and the medium flow channel comprises a medium flow opening and a valve element opening. The electromagnetic assembly is arranged right opposite to the valve element opening, and on-off control is carried out on conduction of the medium flow openings in the two sides of the medium flow channel through the electromagnetic assembly. A leakage stopping pad is arranged in an inner hole of the movable iron and is used for blocking a valve port of the medium flow channel; the electromagnet steel pipe is located in the electromagnetic assembly, the front end of the electromagnet steel pipe is provided with a folded edge clamped and sealed by the body and the electromagnetic assembly, the rear end of the electromagnet steel pipe is provided with an opening, and the fixed iron core extends into the opening and is provided with a plurality of O-shaped rings for sealing and isolation; according to the electromagnetic valve, valve opening and closing actions are carried out through electromagnetic adsorption and the action of the positioning spring, the leakage stopping gasket is pushed to provide continuous sealing force through a hole leading medium, the steel pipe is provided with the folded edge in an extending mode, the folded edge is converted into an end face sealing structure, assembling is convenient, and the sealing effect can be improved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and specifically to an electromagnetic valve structure. Background Technology

[0002] Solenoid valves are electromagnetically controlled industrial devices used in industrial control systems to adjust the direction, flow rate, speed, and other parameters of the medium. Solenoid valves can be used with different circuits to achieve the desired control, ensuring both precision and flexibility. There are many types of solenoid valves, each playing a different role in the control system. The most common types are check valves, safety valves, directional control valves, and speed regulating valves.

[0003] Solenoid valves typically open and close by controlling the on / off state of an iron core, which is magnetized by an electromagnetic force generated by a coil. Common solenoid valves have a tension guide sleeve between the coil and the iron core. The tension guide sleeve guides the moving iron core and facilitates the machining of the inner hole of the coil in the solenoid assembly. Therefore, the tension guide sleeve is usually fixed to the inner hole of the coil in advance by applying glue for sealing purposes. In addition, the gap between the solenoid valve body and the solenoid assembly in existing technologies is located in the medium cavity. The high pressure in the medium cavity makes the connection seam prone to leakage and other problems. Furthermore, the moving iron core needs to be connected at both ends during axial sliding, so a drainage groove is required. The drainage groove is usually made by opening a hole inside the iron core. Utility Model Content

[0004] In view of the prior art, the purpose of this utility model is to provide a structural solution for a solenoid valve, which improves the sealing difficulty of the solenoid valve by extending the front end of the electromagnet steel pipe to set a folded edge and using end face sealing to fix it. It also improves the setting method of the movable iron drainage groove and uses the medium pressure to provide a continuous sealing force for the valve closure.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a solenoid valve structure, including a body, a medium flow channel provided inside the body, the medium flow channel including a medium flow port and a valve core port;

[0006] An electromagnetic component is positioned directly opposite the valve core orifice, and the electromagnetic component controls the opening and closing of the medium flow ports on both sides of the medium flow channel.

[0007] Movable iron, with a leak-proof gasket inside the movable iron to seal the valve port of the medium flow channel;

[0008] An electromagnet steel pipe is located inside an electromagnetic assembly. The front end has a folded edge that is clamped and sealed by the body and the electromagnetic assembly. The rear end is open, and the fixed iron core extends into the opening and is sealed and isolated by several O-rings.

[0009] As a further provision of the above scheme, the movable iron is provided with at least one drainage groove on its side and a shallow guide groove connected to the drainage groove at its rear end. The drainage groove is used to connect the valve body cavity space at both ends of the movable iron. The movable iron is provided with a groove for placing a leak-proof pad. The groove is provided with a side flow hole connected to the drainage groove. The leak-proof pad is provided with several notches.

[0010] As a further feature of the above solution, a positioning spring is also fitted on the movable iron, which is used to push the movable iron to move towards the body.

[0011] As a further provision of the above scheme, the electromagnetic component also includes a fixed iron core fixed relative to the electromagnetic component and the main body, and a coil wound around the outside of the fixed iron core. When the coil is energized, it magnetizes the fixed iron core and the movable iron, and attracts the movable iron to conduct the medium flow channel.

[0012] As a further feature of the above solution, a fixing plate is provided, which is disposed between the body and the electromagnetic component for connecting and fixing the two, and includes screw holes and positioning posts for limiting radial movement.

[0013] As a further feature of the above scheme, a sealing groove is provided on the end face of the main body opposite to the electromagnet steel pipe. The sealing groove is located outside the valve core port and is provided with a rubber pad. The maximum diameter of the folded edge of the electromagnet steel pipe is larger than the diameter of the rubber pad.

[0014] Beneficial effects: The solenoid valve of this utility model opens and closes the valve through electromagnetic adsorption and the action of a positioning spring, and provides continuous sealing force by pushing the anti-leakage gasket through the opening to allow the medium to pass through. By extending the steel pipe and setting the folded edge, it is transformed into an end face sealing structure, which not only facilitates assembly but also improves the sealing effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the solenoid valve structure of this utility model.

[0016] Figure 2 This is an exploded view of the solenoid valve component of this utility model.

[0017] Figure 3 This is a schematic diagram of the solenoid valve part of this utility model.

[0018] Figure 4 This is a schematic cross-sectional view of the solenoid valve of this utility model.

[0019] Figure 5 This is a schematic diagram of the movable iron structure of this utility model.

[0020] Figure 6 This is a schematic diagram of the electromagnet steel pipe structure of this utility model.

[0021] Reference numerals: 1. Body; 11. Medium flow channel; 12. Medium flow port; 13. Valve core port; 14. Valve port; 17. Rubber gasket; 18. Sealing groove; 2. Electromagnetic assembly; 21. Fixed iron core; 22. Coil; 3. Fixed iron plate; 31. Screw hole; 32. Positioning post; 4. Movable iron; 41. Anti-drain pad; 42. Drain groove; 43. Shallow guide groove; 44. Side flow hole; 45. Groove; 46. Notch; 47. Positioning spring; 5. Electromagnet steel tube; 51. Folded edge; 52. Opening; 53. O-ring. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other.

[0023] like Figure 1-6 As shown, the present invention provides a solenoid valve structure, including a body 1, a medium flow channel 11 inside the body 1, the medium flow channel 11 including a medium flow port 12 and a valve core port 13, wherein the medium flow port 12 is divided into an inlet and an outlet, the medium flows in through the medium flow channel 11, flowing in from the inlet and then flowing out from the outlet, the valve core port 13 is radially opened opposite to it, and, as in this embodiment, the solenoid valve is a high-inlet, low-outlet flow type, a structure is provided in the inner cavity of the body 1 in the inlet direction, extending from the valve core port 13, for closing the valve port 14 of the medium flow channel 11 that is directly opposite the valve core port 13;

[0024] Including the electromagnetic component 2, in this embodiment, the electromagnetic component 2 is positioned directly opposite the valve core port 13. A leak-proof pad 41 is provided in the inner hole of the movable iron 4 to seal the valve port 14 of the medium flow channel 11. This is used to generate axial pushing force through the electromagnetic component 2, which, in conjunction with the positioning spring 47, achieves the structure for closing the valve port 14, thus completing the valve opening and closing process. In this embodiment, the solenoid valve controls the flow of the medium outlets 12 on both sides of the medium flow channel 11 through the electromagnetic component 2, as shown in the figure. In this embodiment, after the electromagnetic component 2 is energized, the fixed iron core 21 and the movable iron 4 are together... The magnetized components are fixed in place by the fixed iron core 21. Therefore, the movable iron 4 will move upward by magnetic attraction and stick to the fixed iron core 21. At the same time, it will drive the anti-drain pad 41 to release the blockage of the valve port 14, thus opening the valve. After the release coil 22 is energized, the electromagnetic field is de-energized, the magnetic force disappears, and the elastic restoring force of the positioning spring 47 drives the movable iron 4 to move downward, thus closing the valve. It is worth noting that when the valve is closed, the medium pressure on the inlet side can still provide a sealing maintenance force for the anti-drain pad 41, continuously ensuring the seal.

[0025] In this embodiment, the electromagnetic component 2 is further equipped with an electromagnet steel tube 5. Unlike existing technologies that do not have or have a simple cylindrical structure, this structure is prone to gaps, leaks, and loosening during actual assembly and use, affecting the use of the solenoid valve. In this embodiment, the electromagnet steel tube 5 is further improved by setting a folded edge 51. The folded edge 51 is clamped and sealed by the body 1 and the electromagnetic component 2. The rear opening 52 is set, and the fixed iron core 21 extends into the opening 52 and is equipped with several O-rings 53 for sealing and isolation. By changing the sealing structure of the existing technology to an end face seal formed by the cooperation of the body 1 and the electromagnetic component 2, the rubber gasket 17 is set to clamp and strengthen the sealing effect during end face sealing. After the O-rings 53 are set at the fixed iron core 21, the valve body is isolated from the inside and outside. The use of the folded edge 51 can also reduce the sealing gap between the body 1 and the electromagnetic component 2 and facilitate the installation and fixing of the electromagnet steel tube 5.

[0026] As a further feature of the above solution, it is worth noting that in this embodiment, the movable iron 4 is located within the valve body cavity formed by the main body 1 and the electromagnetic component 2. Axial movement is achieved through the action of the coil 22 and the positioning spring 47. This action is performed within a sealed cavity. Although there is a clearance, the drainage groove 42 and shallow guide groove 43 on the movable iron 4 prevent the formation of piston hydraulic pressure, allowing the medium to flow smoothly back and forth and complete the action. Furthermore, the size of the groove opening can be adjusted to achieve a buffering and damping effect. In this embodiment, the drainage groove 42 is also connected to the shallow guide groove 43, which can also provide a guiding flow effect for the medium. In addition, the movable iron 4 in this embodiment is provided with a groove 45 for placing the anti-relief pad 41. Based on the consideration of further utilizing the medium pressure to improve the sealing effect, the groove 45 in this embodiment is provided with a side flow hole 44 that connects to the drain groove 42, that is, connects to the direction of medium flow. When the valve is closed, the medium will enter from the side flow hole 44, press the anti-relief pad 41 to make it stick to the valve seat end near the valve port 14, and form a continuous seal with the double pressure of the positioning spring 47. Considering the opening of the valve, the anti-relief pad 41 in this embodiment is provided with several notches 46, which can allow the medium in the cavity of the groove 45 to flow out, form a medium circulation, and prevent the medium from accumulating inside.

[0027] As a further provision of the above scheme, a positioning spring 47 is also fitted on the movable iron 4. One end of the positioning spring 47 abuts against the movable iron 4, and the other end abuts against the inner wall of the solenoid valve body. It is used to push the movable iron 4 to move towards the body 1 (valve closing action). In this embodiment, the positioning spring 47 plays the role of closing the valve. In this embodiment, the power to open the valve comes from the electromagnetic field formed by the energization of the coil 22 of the electromagnetic component 2. After the fixed iron core 21 and the movable iron 4 are magnetized, the movable iron 4 is attracted by the fixed iron core 21. The process of opening the valve is also the process of the movable iron 4 compressing the positioning spring 47. The initial power to close the valve comes from the positioning spring 47. After the positioning spring 47 pushes the movable iron 4 to close the valve port 14 with the anti-drain pad 41, the medium pressure can also help the anti-drain pad 41 to provide continuous pushing pressure and the continuous elastic force of the positioning spring 47 to work together to achieve continuous sealing.

[0028] As a further provision of the above scheme, the electromagnetic component 2 also includes a fixed iron core 21 fixed relative to the electromagnetic component 2 and the main body 1, and a coil 22 wound around the outside of the fixed iron core 21. After the coil 22 is energized, it magnetizes the fixed iron core 21 and the movable iron 4, and attracts the movable iron 4 to conduct the medium flow channel 11.

[0029] As a further feature of the above scheme, a fixing iron plate 3 is provided, which is disposed between the body 1 and the electromagnetic component 2 for connecting and fixing the two. The fixing iron plate 3 includes a screw hole 31 and a positioning post 32 for limiting radial movement.

[0030] As a further provision of the above scheme, a sealing groove 18 is provided on the end face of the main body 1 opposite to the electromagnet steel pipe 5. The sealing groove 18 is located outside the valve core port 13 and is provided with a rubber pad 17. The maximum diameter of the folded edge 51 of the electromagnet steel pipe 5 is larger than the diameter of the rubber pad 17.

[0031] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A solenoid valve structure, characterized in that: include Body (1), the body (1) is provided with a medium flow channel (11), the medium flow channel (11) includes a medium flow port (12) and a valve core port (13); Electromagnetic component (2), which is positioned opposite the valve core port (13), controls the opening and closing of the medium flow ports (12) on both sides of the medium flow channel (11) through the electromagnetic component (2); Movable iron (4), with a leak-proof pad (41) in the inner hole of the movable iron (4) for sealing the valve port (14) of the medium flow channel (11); Electromagnetic steel pipe (5), the electromagnetic steel pipe (5) is located inside the electromagnetic component (2), the front end has a folded edge (51) which is clamped and sealed by the body (1) and the electromagnetic component (2), the rear end has an opening (52), the fixed iron core (21) extends into the opening (52) and is provided with several O-rings (53) for sealing and isolation.

2. The solenoid valve structure according to claim 1, characterized in that: The movable iron (4) has at least one drainage groove (42) on its side and a shallow guide groove (43) connected to the drainage groove (42) at its rear end. The drainage groove (42) is used to connect the valve body cavity space at both ends of the movable iron (4).

3. The solenoid valve structure according to claim 2, characterized in that: The movable iron (4) is provided with a groove (45) for placing the anti-drain pad (41). The groove (45) is provided with a side flow hole (44) connected to the drainage channel (42). The anti-drain pad (41) is provided with several notches (46).

4. The solenoid valve structure according to claim 1, characterized in that: The movable iron (4) is also fitted with a positioning spring (47), which is used to push the movable iron (4) to move towards the body (1).

5. The solenoid valve structure according to claim 1, characterized in that: The electromagnetic component (2) also includes a fixed iron core (21) fixed relative to the electromagnetic component (2) and the main body (1), and a coil (22) wound around the outside of the fixed iron core (21). When the coil (22) is energized, it magnetizes the fixed iron core (21) and the movable iron (4), and attracts the movable iron (4) to conduct the medium flow channel (11).

6. The solenoid valve structure according to claim 1, characterized in that: It includes a fixing plate (3), which is disposed between the body (1) and the electromagnetic assembly (2) for connecting and fixing the two, and includes a screw hole (31) and a positioning post (32) for limiting radial movement.

7. The solenoid valve structure according to claim 1, characterized in that: A sealing groove (18) is provided on the end face of the main body (1) opposite to the electromagnet steel pipe (5). The sealing groove (18) is located outside the valve core port (13) and is provided with a rubber pad (17). The maximum diameter of the folded edge (51) of the electromagnet steel pipe (5) is larger than the diameter of the rubber pad (17).

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