Mechanical displacement detection electromagnetic valve

Abstract

The utility model relates to the technical field of detection electromagnetic valves, in particular to a mechanical displacement detection electromagnetic valve which comprises a valve sleeve, a valve element is arranged in the valve sleeve, a control assembly is arranged on the outer side of the valve element, a detection part is arranged at the tail of the valve element, and the detection part is connected with the valve element. The detection part comprises a microswitch connected with the valve element, the action indication function can be achieved under the small size, the electromagnetic valve is suitable for the technical field of spaceflight, faults caused by wrong connection or identification problems are avoided, and the reliability and maintainability of the electromagnetic valve are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of detection solenoid valve technology, specifically to a mechanical displacement detection solenoid valve. Background Technology

[0002] Solenoid valves are electromagnetically controlled industrial devices, fundamental components of automation used to control fluids. As actuators, they are used in industrial control systems to adjust the direction, flow rate, speed, and other parameters of the medium. They offer advantages such as high precision and flexibility. Particularly in the aerospace field, where the reliability requirements for solenoid valve reversal are high, the products themselves lack methods for detecting mechanical displacement, or the detection methods are limited. When a solenoid valve malfunctions, troubleshooting the hydraulic system is necessary, a complex and time-consuming process. Furthermore, if a solenoid valve problem is not detected immediately, it can lead to malfunction, inability to execute specified commands, and even safety accidents. Additionally, when there are many similar solenoid valves in a hydraulic system, even with markings, incorrect wiring or worn markings can occur, leading to malfunctions or burnout. However, existing small solenoid valves in use, due to their small size, cannot meet the function of indicating action status in practical applications. Therefore, this technical solution aims to improve upon this approach. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies where the operation of solenoid valves cannot be clearly displayed, and to provide a mechanical displacement detection solenoid valve.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a mechanical displacement detection solenoid valve, comprising a valve sleeve, a valve core disposed inside the valve sleeve, a control component disposed outside the valve core, a detection part disposed at the tail of the valve core, and the detection part comprising a micro switch connected to the valve core.

[0005] Furthermore, the bottom of the valve sleeve is provided with a receiving cavity for accommodating the detection part, the bottom of the receiving cavity is provided with an isolation plate, and the outer side of the isolation plate is provided with a lead wire.

[0006] Furthermore, the control component includes a first spring wound around the bottom of the valve core, a stop being provided at the bottom of the valve core to abut against the first spring, a connecting shaft being provided at the bottom of the valve core, an armature being provided on the outer side of the connecting shaft, and a coil assembly being provided on the outer side of the armature.

[0007] Furthermore, a detection rod is provided at the bottom of the connecting shaft, a second spring is wound around the outside of the detection rod, and a stop is provided at one end of the detection rod near the connecting shaft to abut against the second spring.

[0008] Furthermore, a sealing ring is provided on the outer bottom of the detection rod, and the bottom of the detection rod abuts against the detection contact of the micro switch.

[0009] The beneficial effects of this utility model embodiment are as follows: The detection unit includes a micro switch connected to the valve core. The principle of the micro switch is that external force is applied to the actuating spring through a transmission element. When the actuating spring is displaced to the critical point, it generates an instantaneous action, causing the moving contact at the end of the actuating spring to quickly connect or disconnect with the fixed contact, thus completing the switch detection function. A stop is provided at the bottom of the valve core to abut against the first spring. The other end of the first spring abuts against the inner wall of the valve sleeve. When the valve core moves to the left, the first spring is compressed, which can provide a stable restoring force for the valve core. A second spring is wound around the outside of the detection rod. A stop is provided at the end of the detection rod near the connecting shaft to abut against the second spring, ensuring the stability of the movement of the detection rod. A sealing ring is provided on the outside of the bottom of the detection rod to prevent fluid leakage. At the same time, the bottom of the detection rod abuts against the detection contact of the micro switch. It can realize the action indication function in a small volume, which is applicable to the aerospace field. It avoids failures caused by incorrect connection or labeling problems, and significantly improves the reliability and maintainability of the solenoid valve. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0012] In the diagram: 1. Valve core; 2. Valve sleeve; 3. Coil assembly; 4. Connecting shaft; 5. Armature; 6. Second spring; 7. Detection rod; 8. Micro switch; 9. Lead wire; 10. First spring; 11. Isolation plate. Detailed Implementation

[0013] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0014] See Figures 1 to 2 This utility model discloses a mechanical displacement detection solenoid valve, which mainly consists of key parts such as valve sleeve 2, valve core 1, control components and detection unit. Valve sleeve 2 serves as the outer shell structure of the entire solenoid valve, and valve core 1 is disposed inside valve sleeve 2. Valve core 1 is positioned along the axis of valve sleeve 2. Through specific structural design on valve core 1, effective detection of mechanical displacement of the solenoid valve can be achieved.

[0015] In the specific structure of the solenoid valve, a fluid working port is provided at the left end of the valve body, and a control component is provided on the outside of the valve core 1 to achieve accurate control of the movement of the valve core 1. The control component includes a first spring 10 wound around the bottom of the valve core 1, a stop at the bottom of the valve core 1 that abuts against the first spring 10, and the other end of the first spring 10 abuts against the inner wall of the valve sleeve 2. When the valve core 1 moves to the left, the first spring 10 is compressed, which can provide a stable restoring force for the valve core 1. A connecting shaft 4 is also provided at the bottom of the valve core 1, an armature 5 is provided on the outside of the connecting shaft 4, and a coil assembly 3 is provided on the outside of the armature 5. By controlling the energization and de-energization of the coil assembly 3, the armature 5 can be driven to drive the connecting shaft 4 and the valve core 1 to move, thereby achieving fluid control. Because the movement of the valve core 1 cannot be accurately detected, a control component is provided on the outside of the bottom of the valve core 1 to drive its movement, and a detection part is provided at the tail of the valve core 1 to realize displacement detection.

[0016] The detection unit includes a microswitch 8 connected to the valve core 1. The microswitch 8 works by applying external force to an actuating spring via a transmission element. When the actuating spring moves to a critical point, it instantly activates, causing the moving contact at the end of the actuating spring to quickly connect or disconnect with the fixed contact, thus completing the switch detection function. When the force on the transmission element is removed, the actuating spring generates a reverse force. After the reverse stroke of the transmission element reaches the actuating critical point of the spring, the reverse action is completed instantaneously. In the circuit, the microswitch 8 typically uses a spring-loaded lever to open and close a set of internal contacts, using three connection points to achieve rapid switching of the power direction. In a stationary state, power is supplied through the normally closed terminal. When displacement occurs, the internal spring changes to the normally open state, changing the power path and controlling the circuit's on / off state through the normally open terminal. The bottom of the valve sleeve 2 has a receiving cavity for accommodating the detection unit. An isolation plate 11 is installed at the bottom of the receiving cavity to press the microswitch 8 and provide positioning space for it. A lead wire 9 is installed on the outside of the isolation plate 11 for transmitting detection signals. The control assembly consists of a first spring 10 wound around the bottom of the valve core 1, a stop that abuts against the first spring 10, a connecting shaft 4, an armature 5, and a coil assembly 3. The connecting shaft 4 is located at the bottom of the valve core 1, and the armature 5 and the coil assembly 3 are located outside the connecting shaft 4. When the coil assembly 3 is energized, it generates a magnetic field that attracts the armature 5 to drive the connecting shaft 4 and the valve core 1 to move. The first spring 10 provides a restoring force to ensure the stability of the action.

[0017] A detection rod 7 is connected to the bottom of the connecting shaft 4. A second spring 6 is wound around the outside of the detection rod 7. A stop is set at the end of the detection rod 7 near the connecting shaft 4 to abut against the second spring 6, ensuring the stability of the movement of the detection rod 7. A sealing ring is set on the outside of the bottom of the detection rod 7 to prevent fluid leakage. At the same time, the bottom of the detection rod 7 abuts against the detection contact of the micro switch 8. The sealing ring on the outside of the bottom of the detection rod 7 not only prevents media leakage but also ensures reliable contact with the detection contact of the micro switch 8. When the valve core 1 moves, the displacement information is transmitted to the micro switch 8 through the detection rod 7, which can feed back the displacement signal of the valve core 1. The displacement of the valve core 1 can be monitored in real time. The lead wire 9 can collect the displacement signal of the valve core 1, and the movement status of the valve core 1 can be detected at any time. The structure is simple, the service life is reliable, it can prevent oil corrosion, save costs, and achieve accurate detection of mechanical displacement. By integrating the microswitch 8 into the tail of the valve core 1, and combining the spring reset mechanism with the coil electromagnetic drive, a closed-loop system of "drive-displacement-detection" is constructed. When the solenoid valve performs an action, the valve core 1 is displaced to trigger the microswitch 8, providing real-time feedback on the action status. This effectively solves the problem of the single detection method of traditional solenoid valves. Through structural optimization design, the action indication function can be realized in a small volume, making it suitable for the aerospace field. It avoids failures caused by incorrect connection or labeling problems, and significantly improves the reliability and maintainability of the solenoid valve.

[0018] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0021] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A mechanically displacement detecting solenoid valve comprising a valve sleeve, an inside of the valve sleeve is provided with a spool, characterized in that: A control component is provided on the outside of the valve core, and a detection part is provided at the tail of the valve core. The detection part includes a micro switch connected to the valve core.

2. The mechanical displacement detection solenoid valve according to claim 1, characterized by: The bottom of the valve sleeve is provided with a receiving cavity for accommodating the detection part, the bottom of the receiving cavity is provided with an isolation plate, and the outer side of the isolation plate is provided with a lead wire.

3. The mechanical displacement detection solenoid valve according to claim 1, characterized by: The control component includes a first spring wound around the bottom of the valve core, a stop being provided at the bottom of the valve core to abut against the first spring, a connecting shaft being provided at the bottom of the valve core, an armature being provided on the outside of the connecting shaft, and a coil assembly being provided on the outside of the armature.

4. The mechanically displacement detecting solenoid valve according to claim 3, characterized in that: A detection rod is provided at the bottom of the connecting shaft, and a second spring is wound around the outside of the detection rod. A stop is provided at one end of the detection rod near the connecting shaft to abut against the second spring.

5. The mechanically displacement detecting solenoid valve according to claim 4, characterized in that: A sealing ring is provided on the outer bottom of the detection rod, and the bottom of the detection rod abuts against the detection contact of the micro switch.

Images