Valve element feedback device of two-position two-way miniature fast-response normally-closed electromagnetic valve

Abstract

The valve element feedback device comprises a valve body, an electromagnetic control pipe is arranged on the outer side of the valve body, a terminal is fixedly connected to the lower end of the electromagnetic control pipe, a coil framework assembly is fixedly connected to the interior of the electromagnetic control pipe, and the coil framework assembly is fixedly connected to the lower end of the valve body; the valve assembly is arranged in the coil framework assembly, a coil body is arranged on the outer side of the coil framework assembly, the ejector rod assembly, the microswitch assembly and other assemblies are arranged, fluid on-off control is achieved through displacement of the valve assembly under the power-on and power-off effect, and the valve assembly moves upwards to push the ejector rod assembly when powered on; after in place, the microswitch is triggered to output a signal; and the ejector rod assembly resets under the action of the ejector rod spring, the microswitch outputs another signal, opening and closing of the valve can be judged accordingly, and due to the fact that the displacement of the microswitch is small, whether the valve assembly moves in place or not can be judged in combination with the signal, and stable operation of the electromagnetic valve is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of valve core feedback device technology, specifically to a valve core feedback device for a two-position two-way miniature fast-response normally closed solenoid valve. Background Technology

[0002] Two-position two-way solenoid valves, as core actuators in fluid control systems, are widely used in hydraulics, pneumatics, fuel regulation, and industrial automation. Their core function is to drive the valve core to move using electromagnetic force, thereby achieving precise control of the flow of media. With the development of industrial intelligence and precision manufacturing, the technical requirements for solenoid valves are evolving towards higher response speed, higher reliability, stronger environmental adaptability, and status visualization. Especially in high-end scenarios such as medical equipment, semiconductor manufacturing, and aerospace, more stringent requirements are placed on the performance of solenoid valves. The function of a two-position two-way solenoid valve is to drive the valve core to open and close using electromagnetic force, thereby achieving the control of the flow of media.

[0003] In existing devices, most solenoid valves lack built-in status monitoring functions and rely on external sensors or manual inspections. They cannot provide real-time feedback on the valve core position (open / closed state), which increases the complexity of system fault diagnosis. Therefore, we need to propose a valve core feedback device for a two-position, two-way miniature fast-response normally closed solenoid valve. Summary of the Invention

[0004] The purpose of this invention is to provide a valve core feedback device for a two-position, two-way miniature fast-response normally closed solenoid valve. By incorporating components such as a push rod assembly and a micro switch assembly, the opening and closing state of the solenoid valve can be easily detected, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A valve core feedback device for a two-position, two-way miniature fast-response normally closed solenoid valve includes: The valve body has an electromagnetic control tube on its outer side, with a terminal fixedly connected to its lower end. A coil frame assembly is fixedly connected inside the electromagnetic control tube, and a valve assembly is located inside the coil frame assembly. A coil body is located on the outer side of the coil frame assembly, and a return spring is located on the outer side of the valve assembly. A push rod assembly is located inside the coil frame assembly and above the valve assembly, and a push rod spring is located on the outer side of the push rod assembly. A micro switch assembly is located at the upper end of the coil frame assembly.

[0006] Preferably, the lower end of the terminal is provided with an air inlet and an air outlet.

[0007] Preferably, a plurality of first mounting plates are provided on one side of the valve body, and each of the plurality of first mounting plates has a first mounting hole inside.

[0008] Preferably, the valve body is internally provided with a vent hole.

[0009] Preferably, one side of the valve body is fixedly connected with an external connecting pipe, which is communicated with the vent hole.

[0010] Preferably, the side wall of the electromagnetic control pipe is fixedly connected with two symmetrically distributed second mounting plates, and the interiors of the two second mounting plates are both internally provided with two symmetrically distributed second mounting holes.

[0011] Compared with the prior art, the present application has the following advantages: The present application is provided with a top rod assembly and a micro switch assembly, and under the action of on-off electricity, the valve assembly displacement realizes fluid on-off control, and when powered on, the top rod assembly is pushed upward, and after reaching the position, the micro switch outputs a signal; when powered off, the top rod assembly is reset under the action of the top rod spring, and the micro switch outputs another signal, so that the valve opening and closing can be judged, and because the micro switch displacement is small, the signal can also be combined to judge whether the valve assembly moves to the position, so as to ensure the stable operation of the electromagnetic valve. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is one of the structural schematic diagrams of the present application; Figure 2 is the second structural schematic diagram of the present application; Figure 3 is the internal structure schematic diagram of the electromagnetic control pipe of the present application; Figure 4 is one of the local structure schematic diagrams of the present application; Figure 5 is the second local structure schematic diagram of the present application.

[0013] In the figure: 1, valve body; 2, first mounting plate; 3, first mounting hole; 4, vent hole; 5, external connecting pipe; 6, electromagnetic control pipe; 7, second mounting plate; 8, second mounting hole; 9, terminal; 10, air inlet; 11, air outlet; 12, valve assembly; 13, coil skeleton assembly; 14, coil body; 15, reset spring; 16, top rod assembly; 17, top rod spring; 18, micro switch assembly. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0015] Please refer to Figures 1-5The application provides a technical scheme: A valve core feedback device of a two-position two-way miniature fast-response normally closed electromagnetic valve, comprising: The valve body 1 is externally provided with an electromagnetic control pipe 6, the lower end of the electromagnetic control pipe 6 is fixedly connected with a terminal 9, the inside of the electromagnetic control pipe 6 is fixedly connected with a coil former assembly 13, the inside of the coil former assembly 13 is provided with a valve element assembly 12, the outside of the coil former assembly 13 is provided with a coil body 14, the outside of the valve element assembly 12 is provided with a return spring 15, the inside of the coil former assembly 13 and the upper end of the valve element assembly 12 are provided with a top rod assembly 16, the outside of the top rod assembly 16 is provided with a top rod spring 17, and the upper end of the coil former assembly 13 is provided with a micro switch assembly 18.

[0016] Exemplarily, the valve body 1 serves as a support main body of the entire electromagnetic valve, needs to have sufficient strength and rigidity to bear internal fluid pressure and external possible acting force, and needs to have good sealing performance to prevent fluid leakage, the outside of the valve body 1 is skillfully provided with the electromagnetic control pipe 6, the electromagnetic control pipe 6 is tightly connected with the valve body 1 through a high-precision connecting process, so that loosening or gap between the two is avoided during the working process of the electromagnetic valve, and thus it is ensured that the electromagnetic control signal can be accurately and correctly transmitted to the inside of the valve body.

[0017] The coil former assembly 13 is made of a soft magnetic alloy with high corrosion resistance and high magnetic permeability, the shape and size of the coil former assembly 13 are accurately designed, and the coil former assembly 13 can provide stable support and fixing action for the inside valve element assembly 12 and the outside coil body 14; the valve element assembly 12 is a core component for controlling fluid on-off, and the movement precision and response speed of the valve element assembly 12 directly affect the performance of the electromagnetic valve; when the electromagnetic valve is not powered, the valve element assembly is in an initial position under the action of the return spring 15, and the communication between the inlet and the outlet is blocked; at this time, the return spring 15 provides stable and reliable reset force for the valve element assembly by virtue of the good elasticity and fatigue life of the return spring 15; when the electromagnetic valve is powered, the coil body 14 generates an electromagnetic field, the valve element assembly 12 moves upward under the action of the electromagnetic field and overcomes the elastic force of the return spring 15 and the medium acting force, so that the inlet and the outlet are communicated, and fluid conduction is realized.

[0018] The top rod assembly 16 is matched with the valve assembly 12, and when the valve assembly 12 is displaced under the on-off electricity, the top rod assembly 16 is pushed to move synchronously. The outer side of the top rod assembly 16 is provided with a top rod spring 17. The top rod spring 17 helps the return spring 15 to restore the top rod assembly 16 to the initial position when the solenoid valve is powered off, so as to prepare for the next power-on work. The upper end of the coil framework assembly 13 is provided with a micro switch assembly 18. The micro switch assembly 18 can monitor the position state of the top rod assembly 16 in real time. When the solenoid valve is powered on, the valve assembly 12 moves upward to push the top rod assembly 16 to move to the position, and then the top rod assembly 16 pushes the upper micro switch to change the communication state and output a signal. When the solenoid valve is powered off, the valve assembly 12 is reset, and the top rod assembly 16 is reset synchronously under the action of the top rod spring 17. At this time, the micro switch changes its communication state again and outputs another signal. Different signals output by the micro switch can accurately judge the opening and closing of the valve. At the same time, since the displacement of the micro switch is less than the displacement of the valve assembly, the movement of the valve assembly to the position can also be judged according to the on-off electricity and the signal output by the micro switch, which provides a reliable feedback mechanism for the stable operation of the solenoid valve.

[0019] The lower end of the terminal 9 is respectively provided with an air inlet 10 and an air outlet 11.

[0020] Exemplarily, the shape and size of the air inlet 10 and the air outlet 11 are carefully designed according to the specific application scene and fluid flow requirement of the solenoid valve, so as to ensure that the fluid can smoothly enter and flow out of the solenoid valve. The inner wall of the air inlet 10 and the air outlet 11 is treated by smoothing, and an advanced polishing process is adopted to make the surface roughness of the inner wall reach an extremely low level, so as to reduce the resistance of the fluid in the flowing process, reduce energy loss, and improve the working efficiency of the solenoid valve. At the same time, the air inlet 10 and the air outlet 11 are connected with the terminal 9 in a sealed manner, and the sealing material is selected to be a high-performance rubber sealing ring which has good elasticity and sealing performance and can ensure that there is no leakage phenomenon in the fluid flowing process, so as to ensure the sealing performance of the solenoid valve and avoid the safety hidden danger and equipment damage problem caused by fluid leakage.

[0021] A plurality of first mounting plates 2 are arranged on one side of the valve body 1, and a first mounting hole 3 is arranged in the inside of each first mounting plate 2.

[0022] Exemplarily, the plurality of first mounting plates 2 are made of high-quality alloy steel, having excellent strength and toughness. The interior of each first mounting plate 2 is carefully provided with two first mounting holes 3. The hole diameter and hole distance of the first mounting holes 3 strictly follow the design standard. In the actual installation process, the operator only needs to pass the appropriate bolt through the first mounting hole 3, and then the valve body 1 can be stably fixed on the pipeline system through the bolt. This installation method not only has firm connection, but also is convenient for disassembly and maintenance, providing reliable guarantee for the long-term stable operation of the valve body 1 in the pipeline system.

[0023] The valve body 1 is internally provided with a vent hole 4.

[0024] Exemplarily, when the fluid enters the interior of the valve body 1, the vent hole 4 acts as an unobstructed passage to guide the fluid to smoothly pass through the valve body 1, ensuring that the fluid can efficiently and stably flow inside the valve body 1, meeting the requirements of fluid delivery under different working conditions.

[0025] The valve body 1 is fixedly connected with an external pipe 5 on one side, and the external pipe 5 is communicated with the vent hole 4.

[0026] Exemplarily, the external pipe 5 is perfectly communicated with the vent hole 4, forming a coherent fluid passage. The external pipe 5 is made of high-quality stainless steel material, which has excellent corrosion resistance and high strength, and can adapt to various harsh working environments. The inner wall of the external pipe 5 is finely electrolytic polished, with a smooth surface like a mirror, greatly reducing the frictional resistance of the fluid in the flow process, ensuring that the medium flow has no dead angle. At the same time, the design of the external pipe 5 fully considers the actual installation requirements. The interface part is specially treated, which can quickly and conveniently connect the hose or hard pipe, and can easily adapt to different installation scenes, providing great convenience for the connection of the valve body 1 and the external pipeline.

[0027] The side wall of the electromagnetic control pipe 6 is fixedly connected with two second mounting plates 7 which are symmetrically distributed, and the interior of the two second mounting plates 7 is provided with two second mounting holes 8 which are symmetrically distributed.

[0028] Exemplarily, two second mounting plates 7 are fixedly connected on the side wall of the electromagnetic control pipe 6 by a firm welding process, the two second mounting plates 7 are selected from rectangular steel plates, the thickness of the steel plates is accurately calculated to ensure sufficient strength and stability, two second mounting holes 8 are symmetrically arranged in the interior of each second mounting plate 7, the machining precision of the second mounting holes 8 is extremely high, the hole diameter error is controlled within a very small range, in actual installation, appropriate bolts are passed through the second mounting holes 8, so that the electromagnetic control pipe 6 can be firmly fixed to the outer side of the valve body 1 through the bolts, in addition, the surface of the second mounting plate 7 is subjected to advanced galvanizing treatment to form a dense zinc layer, the zinc layer can effectively isolate air and moisture, greatly improves the corrosion resistance of the second mounting plate 7, prolongs the service life of the electromagnetic control pipe 6, and ensures that it can work stably and reliably in various complex environments.

[0029] Working principle: first check the valve body 1 and the first mounting plate 2 thereof, ensure that the first mounting hole 3 is not damaged, pass the appropriate bolts through the first mounting hole 3, and stably install the valve body 1 in the pipeline system, at the same time, check the second mounting plate 7 of the electromagnetic control pipe 6 and the second mounting hole 8, and confirm that they are correct, and then fix them on the outer side of the valve body 1 through bolts; Then check the inlet 10 and the outlet 11, the shape and size of which are designed according to the application scene and flow requirement, the inner wall is subjected to polishing treatment, and is sealed and connected with the terminal 9 by using a high-performance rubber sealing ring to ensure no leakage, the external connection pipe 5 is communicated with the vent hole 4, and the interface is specially treated to facilitate the connection of a hose or a hard pipe; When the electromagnetic valve is not powered on, the valve assembly 12 is in the initial position under the action of the return spring 15, and the inlet and the outlet are blocked, at this time, the microswitch assembly 18 is in the initial communication state and outputs the corresponding signal; When the electromagnetic valve is powered on, the coil body 14 generates an electromagnetic field, the valve assembly 12 moves upward against the elastic force of the return spring 15 and the action force of the medium, so that the inlet and the outlet are communicated, the fluid flows through the vent hole 4 and the external connection pipe 5, the valve assembly 12 moves to push the plunger assembly 16 to move synchronously, the plunger assembly 16 pushes the microswitch assembly 18 to change the communication state and output a new signal; When the electromagnetic valve is powered off, the return spring 15 and the plunger spring 17 cooperate to reset the valve assembly 12 and the plunger assembly 16, and the microswitch assembly 18 changes the communication state again and outputs a signal, different signals output by the microswitch can accurately judge the opening and closing of the valve and whether the valve assembly moves to the position, and ensure the stable operation of the electromagnetic valve.

[0030] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A valve core feedback device for a two-position, two-way miniature fast-response normally closed solenoid valve, characterized in that, include: A valve body (1) is provided with an electromagnetic control tube (6) on its outer side. A terminal (9) is fixedly connected to the lower end of the electromagnetic control tube (6). A coil frame assembly (13) is fixedly connected inside the electromagnetic control tube (6). A valve assembly (12) is provided inside the coil frame assembly (13). A coil body (14) is provided on the outer side of the coil frame assembly (13). A return spring (15) is provided on the outer side of the valve assembly (12). A push rod assembly (16) is provided inside the coil frame assembly (13) and at the upper end of the valve assembly (12). A push rod spring (17) is provided on the outer side of the push rod assembly (16). A micro switch assembly (18) is provided at the upper end of the coil frame assembly (13).

2. The valve core feedback device for a two-position, two-way miniature fast-response normally closed solenoid valve according to claim 1, characterized in that: The lower end of the terminal (9) is provided with an air inlet (10) and an air outlet (11).

3. The valve core feedback device for a two-position, two-way miniature fast-response normally closed solenoid valve according to claim 1, characterized in that: The valve body (1) has a plurality of first mounting plates (2) on one side, and each of the plurality of first mounting plates (2) has a first mounting hole (3) inside.

4. The valve core feedback device for a two-position, two-way miniature fast-response normally closed solenoid valve according to claim 3, characterized in that: The valve body (1) has a vent hole (4) inside.

5. The valve core feedback device for a two-position, two-way miniature fast-response normally closed solenoid valve according to claim 4, characterized in that: An external pipe (5) is fixedly connected to one side of the valve body (1), and the external pipe (5) communicates with the vent (4).

6. The valve core feedback device for a two-position, two-way miniature fast-response normally closed solenoid valve according to claim 1, characterized in that: Two symmetrically distributed second mounting plates (7) are fixedly connected to the side wall of the electromagnetic control tube (6), and two symmetrically distributed second mounting holes (8) are opened inside the two second mounting plates (7).

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