Electromagnetic valve suitable for grease
By introducing a sealing guide iron and a sealing structure into the solenoid valve, the problem of slow movement caused by grease adhesion is solved, the stable operation of the solenoid valve in a high-viscosity grease environment is achieved, and the applicability and reliability of the solenoid valve are improved.
Patent Information
- Application Number
- CN202423003849.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing solenoid valves are prone to adhesion and malfunction in high-viscosity grease media environments, resulting in slow movement or failure, especially in high-frequency switching or long-term operation situations where stability and reliability are insufficient.
By optimizing the structural design and adopting the sealing guide iron and sealing structure, including the tube cavity sealing ring, cavity sealing ring and support ring, it is ensured that grease does not enter the electromagnetic wire tube. Combined with the cooperation of the electromagnetic coil and the spring, the reliable movement of the valve core is achieved.
It effectively prevents grease from entering the electromagnetic wire tube, ensuring the long-term stable operation of the solenoid valve in a high-viscosity grease environment, and improving the applicability and reliability of the solenoid valve.
Smart Images
Figure CN223318566U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electromagnetic valves, and more particularly to a electromagnetic valve suitable for use with grease. Background Art
[0002] Solenoid valves, devices that use electromagnetic control to switch the flow direction of a medium, are widely used in hydraulic, pneumatic, and fluid control systems. Existing solenoid valves are mostly designed for controlling low-viscosity fluids or gases. Their reliability and stability are limited when used with high-viscosity grease media. Due to its high viscosity, grease easily adheres to the surfaces of key valve components, particularly the moving parts of the moving iron or the interior of the solenoid coil. This can cause the equipment to malfunction or sluggish after prolonged use. This problem is particularly pronounced in applications requiring high-frequency switching or long-term operation.
[0003] In order to overcome the above-mentioned shortcomings, the utility model proposes a solenoid valve suitable for use with grease. By optimizing the structural design and adding sealing and protective measures, the problem of grease causing the moving iron to be unable to move is effectively solved, and the applicability and reliability of the solenoid valve in high-viscosity media environments are improved. Utility Model Content
[0004] In view of this, the utility model provides a solenoid valve suitable for use with grease.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A solenoid valve suitable for use with grease, comprising a valve body and a valve core movably arranged in the valve body, and also comprising a moving iron, a sealing guide iron, an electromagnetic coil, an electromagnetic wire tube, a plug, and a spring. The invention is characterized in that: the sealing guide iron is provided with a tube cavity sealing ring that can seal the electromagnetic wire tube cavity formed by the electromagnetic wire tube; the valve body is provided with five cavities, namely P, A, B, RA and RB, and cavity sealing rings and support rings are provided on the outer sides between the cavities; the valve core is provided with a first slot, a second slot, and a third slot corresponding to the cavity.
[0007] In the preferred technical solution, the valve core can move back and forth in the valve body through the cooperation of the electromagnetic coil and the spring. When the valve core moves and cooperates with the valve core, the first slot, the second slot, and the third slot can respectively make two of the five cavities P, A, B, RA, and RB form a closed or conductive state.
[0008] In a preferred technical solution, when the valve core moves in a direction away from the spring, the second slot connects the two cavities P and A, the third slot connects the two cavities B and RB, and RA is closed.
[0009] In the preferred technical solution, when the valve core moves toward the spring, the second slot connects the two cavities P and B; the first slot connects the two cavities A and RA, and RB is closed.
[0010] In a preferred technical solution, the electromagnetic force generated by the electromagnetic coil when energized can push the moving iron to move in the direction close to the spring, and the two ends of the sealing iron guide are respectively connected to the moving iron and the valve core.
[0011] In a preferred technical solution, the electromagnetic wire tube and the plug are sealed to connect the two ends of the valve body, and the spring is sleeved on the plug and the valve core.
[0012] In the preferred technical solution, a wire tube sealing ring is provided at the connection between the electromagnetic wire tube and the valve body, and a plug sealing ring is provided at the connection between the plug and the valve body.
[0013] It can be seen from the above technical solutions that, compared with the prior art, the present invention has the following beneficial technical effects:
[0014] The utility model effectively prevents grease from entering the electromagnetic wire tube and interfering with the moving iron through the special design of the sealing guide iron and the optimization of the sealing structure, thereby ensuring that the solenoid valve can operate stably for a long time in a high-viscosity grease environment, making the solenoid valve more suitable for controlling the work of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model in the initial state.
[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model in the power-on state.
[0018] Figure numbers: 1, valve body; 2, electromagnetic coil; 3, moving iron; 4, sealing guide iron; 5, valve core; 6, spring; 7, plug; 8, electromagnetic wire tube; 81, electromagnetic wire tube cavity; 31, tube cavity sealing ring, 11, cavity sealing ring; 12, support ring; 51, first slot; 52, second slot; 53, third slot; 82, wire tube sealing ring; 71, plug sealing ring. DETAILED DESCRIPTION
[0019] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.
[0020] In the description of this application, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application. In the description of this application, unless otherwise specified, "plurality" means two or more.
[0021] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0022] A solenoid valve suitable for grease use, see Figure 1 、 2The solenoid valve can be applied to air cylinders and hydraulic cylinders, including a valve body 1 and a valve core 5 movably arranged in the valve body 1. The valve body 1 is a hollow structure, and the valve core 5 is embedded in the valve body 1; it also includes a moving iron 3, a sealing guide iron 4, an electromagnetic coil 2, an electromagnetic wire tube 9, a plug, and a spring 6; the sealing guide iron 4 is provided with a tube cavity sealing ring 31 that can seal the electromagnetic wire tube cavity 81 formed by the electromagnetic wire tube 8, and the sealing guide iron 4 is provided with a groove body matching the tube cavity sealing ring 31. The tube cavity sealing ring 31 is sleeved on the sealing guide iron 4 through the groove body, and the tube cavity sealing ring 31 can be sealed and connected to the electromagnetic wire tube cavity 81. If the solenoid valve is used in a hydraulic cylinder with grease medium, it can prevent the grease medium in the valve body 1 from entering the electromagnetic wire tube cavity 81, so as to avoid the moving iron from being unable to move due to grease. The sealing guide iron 5 and the tube cavity sealing ring 31 arranged thereon are one of the core designs of the utility model. The tube cavity sealing ring 31 ensures that grease cannot enter the interior of the electromagnetic wire tube 8, thereby fundamentally avoiding the interference of grease on the movement of the moving iron 3. The valve body 1 has five chambers, namely P, A, B, RA, and RB. Generally, the solenoid valve also has connectors on the outside of the five chambers, which are used to connect to hydraulic cylinders, liquid sources, etc. Chamber seals 11 and support rings 12 are installed on the outside of the chambers. As shown in the figure, the five chambers are arranged from left to right in the order of RA, A, P, B, and RB. Chamber seals 11 and support rings 12 are installed between chambers RA and A, and A and P. In addition, seals are installed on the outside of RA and RB. This structure ensures that the chambers are sealed and isolated from each other, ensuring that the joints will not leak after the chambers are connected to the connectors. The valve core 5 has a first slot 51, a second slot 52, and a third slot 53 corresponding to the chambers.
[0023] Furthermore, the valve core 5 can move back and forth within the valve body 1 through the cooperation of the electromagnetic coil 2 and the spring 6. When the valve core 5 moves and cooperates with the valve core 5, the first slot 51, the second slot 52, and the third slot 53 can respectively make two of the five cavities P, A, B, RA, and RB form a closed or conductive state. Taking the solenoid valve connected to the hydraulic cylinder as an example, the P cavity is connected to the liquid medium source and is the oil inlet of the solenoid valve. If the solenoid valve is used in conjunction with the cylinder, P is the air inlet. The A and B cavities are connected to the hydraulic cylinder and are the outlets of the liquid. The action of the solenoid valve guides the liquid to the corresponding working port, thereby driving the hydraulic cylinder to operate. RA and RB are usually drain ports, connected to the oil drain pipe, used to discharge the liquid in the fluid system. Switching the valve core 5 will guide the fluid of A or B to these oil drain ports to ensure the normal operation of the system.
[0024] Furthermore, when the valve core 5 moves away from the spring 6 (i.e., in the initial state), the solenoid coil 2 is de-energized, and the spring 6's elastic force maintains the valve core 5's rightward bias. The second slot 52 connects the P and A chambers, the third slot 52 connects the B and RB chambers, and RA is closed. When the valve core moves toward the spring 6 (i.e., when the solenoid coil 2 is energized, electromagnetic force is generated to push the movable iron 3, thereby driving the sealing iron guide 4 and the valve core 5 to the right. The sealing iron guide 4's ends are connected to the movable iron 3 and the valve core 5, respectively, to achieve multi-component linkage. After the valve core 5 compresses the spring 6 and moves to the right, the second slot 52 connects the P and B chambers, the first slot 51 connects the A and RA chambers, and RB is closed. When the solenoid coil 2 is de-energized, the electromagnetic force disappears, and the compressed spring 6 releases its elastic force, causing the valve core 5, the sealing iron guide 4, and the movable iron 3 to reset, and the solenoid valve returns to its initial state. The movement of the valve core 5 switches between the two working positions, thereby controlling the operation of the hydraulic cylinder.
[0025] Furthermore, the electromagnetic wire tube 8 and the plug 7 are sealed and connected to the two ends of the valve body 1. A wire tube sealing ring is provided at the connection between the electromagnetic wire tube 8 and the valve body 1. Specifically, a plug sealing ring 71 is provided at the connection between the plug 7 and the valve body 1 to ensure the overall sealing performance of the solenoid valve. The spring 6 is sleeved on the plug 7 and the valve core 5. The elastic force of the spring 6 can act on the valve core 5, so that when the electromagnetic coil 2 is not energized, the valve core 5 can always be kept in the right state due to the thrust of the spring 6.
[0026] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A solenoid valve suitable for use with grease, comprising a valve body (1) and a valve core (5) movably disposed in the valve body (1), a moving iron (3), a sealing iron guide (4), an electromagnetic coil (2), an electromagnetic wire tube (8), a plug (7), and a spring (6), characterized in that: The sealing iron guide (4) is provided with a tube cavity sealing ring (31) capable of sealing the electromagnetic wire tube cavity (81) formed by the electromagnetic wire tube (8); the valve body (1) is provided with five cavities, namely P, A, B, RA and RB, and the outer sides between the cavities are provided with cavity sealing rings (11) and support rings (12); the valve core (5) is provided with a first slot (51), a second slot (52) and a third slot (53) corresponding to the cavities.
2. The solenoid valve suitable for grease use according to claim 1, characterized in that: The valve core (5) can move back and forth in the valve body (1) through the cooperation of the electromagnetic coil (2) and the spring (6). When the valve core (5) moves and cooperates with the valve core (5), the first slot (51), the second slot (52), and the third slot (53) can respectively make two of the five cavities P, A, B, RA, and RB form a closed or conductive state.
3. The solenoid valve suitable for grease use according to claim 2, characterized in that: When the valve core (5) moves in a direction away from the spring (6), the second slot (52) connects the two cavities P and A, the third slot (53) connects the two cavities B and RB, and RA is closed.
4. The solenoid valve suitable for grease use according to claim 2, characterized in that: When the valve core (5) moves toward the spring (6), the second slot (52) connects the two cavities P and B; the first slot (51) connects the two cavities A and RA, and RB is closed.
5. The solenoid valve suitable for grease use according to claim 1, characterized in that: The electromagnetic coil (2) can push the movable iron (3) to move toward the spring (6) by generating an electromagnetic force when energized, and the two ends of the sealing iron guide (4) are respectively connected to the movable iron (3) and the valve core (5).
6. The solenoid valve suitable for grease use according to claim 1, characterized in that: The electromagnetic wire tube (8) and the plug (7) are sealed to connect the two ends of the valve body (1), and the spring (6) is sleeved on the plug (7) and the valve core (5).
7. The solenoid valve suitable for grease use according to claim 6, characterized in that: A wire tube sealing ring (82) is provided at the connection between the electromagnetic wire tube (8) and the valve body (1), and a plug sealing ring (71) is provided at the connection between the plug (7) and the valve body (1).