Nine-way high-frequency electromagnetic valve

Abstract

This application relates to the technical field of fluid control and discloses a nine-way high-frequency solenoid valve, including a lower valve body and an upper valve body. The lower valve body has an air inlet channel at its lower end, and the upper valve body has an air outlet channel. A circuit board is disposed between the lower and upper valve bodies. The lower valve body has a hollow interior forming a working chamber, and the circuit board is located within the working chamber. A glue inlet guide is fixedly disposed on the lower valve body for injecting glue into the working chamber. The upper end of the glue inlet guide is connected to the working chamber, and the lower end of the glue inlet guide is connected to the air inlet channel. The upper surface of the glue inlet guide is higher than the height of the circuit board. This application has the effect of improving the waterproof performance of the solenoid valve.

Description

Technical Field

[0001] This application relates to the field of fluid control technology, and in particular to a nine-way high-frequency solenoid valve. Background Technology

[0002] With the continuous improvement of industrial automation, solenoid valves, as the core actuators of fluid control systems, play a vital role in various fields by precisely controlling the opening and closing of fluid channels and achieving accurate regulation of fluid flow. In the field of material sorting, nine-way high-frequency solenoid valves can efficiently sort multiple materials. By controlling the opening and closing of multiple channels, unqualified products can be screened out, and products of different specifications can be accurately sorted, greatly improving production efficiency and product quality.

[0003] Existing nine-way high-frequency solenoid valves typically have an air inlet channel at the bottom of the valve body and nine air outlet channels at the top. All air inlet and outlet channels are interconnected. Below each outlet channel is a corresponding valve cover and electromagnet. The electromagnet consists of a magnetic core and a coil sleeved around the core, with the coil connected to a power source. The valve cover is made of magnetically conductive material. The valve body also contains a positioning ring and a circuit board. The positioning ring has a positioning hole for the valve cover to pass through, and a rubber ring is located on its outer side. In its natural state, the upper surface of the outer end of the valve cover tilts downwards under the pressure of the rubber ring, causing the inner end of the valve cover to tilt upwards and press against the valve opening of the outlet channel, thus closing the outlet channel. The electromagnet is located inside the positioning ring and below the valve cover. The circuit board connects to an external circuit and controls the energization of the corresponding coil. When the coil is energized, the corresponding magnetic core generates magnetism, magnetically attracting the inner end of the valve cover downwards, thus opening the corresponding outlet channel.

[0004] Regarding the aforementioned technologies, the circuit board located inside the valve body is connected to the air intake channel. Since the circuit board is located at the lower end of the valve body, when water enters the valve body, the water can easily come into contact with the circuit board, causing the circuit board to burn out and thus damaging the entire valve body, affecting the normal operation of the equipment and production efficiency. Utility Model Content

[0005] To improve the waterproof performance of solenoid valves, this application provides a nine-way high-frequency solenoid valve.

[0006] This application provides a nine-way high-frequency solenoid valve, which adopts the following technical solution: A nine-way high-frequency solenoid valve includes a lower valve body and an upper valve body. An air inlet channel is provided at the lower end of the lower valve body, and an air outlet channel is provided on the upper valve body. A circuit board is provided between the lower valve body and the upper valve body. The lower valve body is hollow to form a working cavity, and the circuit board is located inside the working cavity. A glue inlet conduit for injecting glue into the working chamber is fixedly installed on the lower valve body. The upper end of the glue inlet conduit is connected to the working chamber, and the lower end of the glue inlet conduit is connected to the air inlet channel. The height of the upper surface of the glue inlet conduit is higher than the height of the circuit board.

[0007] By adopting the above technical solution, a lower valve body and an upper valve body are set up, with an air inlet channel and an air outlet channel respectively, enabling fluid to enter and exit. The circuit board is placed in the working chamber between the upper and lower valve bodies, and a glue inlet conduit is set up to inject glue into the working chamber. On the one hand, the glue inlet conduit can play a role in blocking water and preventing external water from easily entering the working chamber through the air inlet channel; on the other hand, the glue inlet conduit can isolate and protect the circuit board, so that even if water enters the valve body, the water will not come into contact with the circuit board, avoiding the circuit board from burning out, and ensuring the normal operation of the entire valve body and production efficiency.

[0008] Optionally, a magnetic guide frame is provided between the lower valve body and the upper valve body. The magnetic guide frame includes a top plate, a side plate, and a bottom plate that are connected to each other. A clearance hole is opened on the inner side of the magnetic guide frame to allow the glue inlet guide to pass through. A plurality of electromagnets are arranged circumferentially on the magnetic guide frame. Each electromagnet includes a magnetic core fixed on the bottom plate of the magnetic guide frame and a coil sleeved on the magnetic core. The height of the upper surface of the glue inlet guide is higher than the height of the bottom plate of the magnetic guide frame.

[0009] By adopting the above technical solution, the magnetic guide frame provides an installation base for the electromagnet; a clearance hole is opened on the inner side of the magnetic guide frame to allow the glue inlet guide to pass through; the upper surface of the glue inlet guide is higher than the height of the bottom plate of the magnetic guide frame, which can control the glue to cover the bottom plate of the magnetic guide frame during glue injection, which can better protect the circuit board, and at the same time, it can also fill and cover the bottom of the magnetic guide frame and the electromagnet with glue to improve the stability of the solenoid valve.

[0010] Optionally, an air guide plate is provided between the magnetic guide frame and the upper valve body, and the air outlet channel on the upper valve body extends to the lower surface of the air guide plate. A positioning ring is provided at the lower end of the air guide plate, and a plurality of valve covers are provided between the positioning ring and the top plate of the magnetic guide frame. The inner end of the valve cover is located above the magnetic core and can abut against and seal the air outlet channel. The height of the upper surface of the glue inlet guide is lower than the height of the magnetic core.

[0011] By adopting the above technical solution, the height of the upper surface of the glue inlet guide tube is lower than the height of the magnetic core, which can prevent the glue from affecting the normal operation of the magnetic core during glue injection.

[0012] Optionally, the wall thickness of the upper end of the glue inlet conduit gradually decreases from bottom to top.

[0013] By adopting the above technical solution, the wall thickness of the upper end of the glue inlet conduit gradually decreases from bottom to top. When injecting glue, it can better adapt to the flow characteristics of the glue and guide the glue to diffuse towards the periphery. Its smaller top wall thickness can also prevent glue from accumulating at the top of the glue inlet conduit.

[0014] Optionally, an insulating groove is formed between two adjacent magnetic cores on the magnetic guide frame base plate, and the insulating groove extends radially along the magnetic guide frame base plate.

[0015] Optionally, the side plate of the magnetic guide frame is also provided with insulating grooves, and the insulating grooves on the side plate of the magnetic guide frame are connected to the insulating grooves on the bottom plate one by one.

[0016] By adopting the above technical solution, an insulating groove extending radially can be opened between adjacent magnetic cores on the base plate of the magnetic guide frame, which can effectively avoid electromagnetic interference between adjacent magnetic cores and improve the electromagnetic stability and operational reliability of the solenoid valve.

[0017] Optionally, the air outlet channel includes a straight air inlet section disposed on the air guide plate, a straight air outlet section disposed on the upper valve body, and a conduction reversing section disposed between the air guide plate and the upper valve body. The conduction reversing section extends upward from the straight air inlet section in a direction away from the central axis of the solenoid valve and is connected to the straight air outlet section.

[0018] By adopting the above technical solution, the flow path of the fluid in the air outlet channel is made more reasonable, reducing flow resistance and energy loss, improving the smoothness of fluid flow, and facilitating more efficient material sorting.

[0019] Optionally, the lower sidewall of the conduit reversing section extends radially from the upper end of the straight-through air intake section toward the lower end of the straight-through air outlet section to form an expansion groove, and the bottom wall of the expansion groove is set as an inclined surface.

[0020] By adopting the above technical solution, the Jiutong high-frequency solenoid valve is equipped with an expansion groove and a sloping bottom wall, which can make the gas flow smoother, reduce the resistance and turbulence of the gas in the channel, and further improve the ability to accurately control the fluid flow. As a result, it can sort multiple materials more efficiently in the field of material sorting, thereby improving production efficiency and product quality.

[0021] Optionally, a sealing ring is provided on the lower surface of the upper valve body, and the sealing ring is arranged circumferentially along the air outlet channel.

[0022] By adopting the above technical solutions, the sealing performance of the air outlet channel can be enhanced, fluid leakage can be prevented, and the working stability and reliability of the solenoid valve can be improved.

[0023] In summary, this application includes at least one of the following beneficial effects: 1. By adding a glue inlet conduit, on the one hand, the glue inlet conduit can play a role in blocking water and preventing water from entering the working chamber through the air intake channel; on the other hand, by injecting glue into the working chamber through the glue inlet conduit, the circuit board can be isolated and protected, so that even if water enters the valve body, the water will not come into contact with the circuit board, thus avoiding the circuit board from burning out and ensuring the normal operation of the entire valve body and production efficiency. 2. By adding an insulating groove, electromagnetic interference between adjacent magnetic cores can be effectively avoided, thereby improving the electromagnetic stability and operational reliability of the solenoid valve. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a cross-sectional structural diagram of an embodiment of this application; Figure 3 This is an exploded structural diagram of an embodiment of this application; Figure 4 yes Figure 2 A magnified structural diagram of point A in the middle.

[0025] Explanation of reference numerals in the attached diagram: 1. Lower valve body; 11. Inlet channel; 2. Upper valve body; 21. Outlet channel; 211. Straight-through inlet section; 212. Conductor reversing section; 213. Straight-through outlet section; 214. Expansion slot; 3. Circuit board; 4. Adhesive inlet pipe; 5. Magnetic guide frame; 51. Insulating slot; 6. Electromagnet; 7. Air guide plate; 71. Positioning ring; 8. Valve cover; 9. Sealing ring. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0027] Example 1 This application discloses a nine-way high-frequency solenoid valve. (Refer to...) Figure 1 and Figure 2 The solenoid valve comprises, from bottom to top, a lower valve body 1, a magnetic guide frame 5, an air guide plate 7, and an upper valve body 2, which are connected to each other by bolts or other means. The lower valve body 1 is hollow inside, forming a working chamber. An air inlet pipe is fixed at the center of the lower surface of the lower valve body 1 by welding or integral molding, and an opening in the air inlet pipe forms an air inlet channel 11. The upper valve body 2 has nine air outlet channels 21 along the circumference of the upper valve body 2. These nine air inlet channels 11 all extend downward to the lower surface of the air guide plate 7 and are connected to the working chamber, forming a one-inlet-nine-channel configuration.

[0028] In this embodiment, the circuit board 3 is disposed within the working cavity and located at the bottom. Specifically, a positioning plate can be welded and fixed inside the lower valve body 1, and then the circuit board 3 is fixed to the positioning plate by bolts or other means, thereby installing the circuit board 3. The circuit board 3 is a key component for controlling the operation of the solenoid valve. It is typically composed of a printed circuit board (PCB) and electronic components mounted on it. The circuit board 3 is connected to an external circuit through wires, receives control signals, and controls the action of the solenoid valve.

[0029] Reference Figure 2 and Figure 3 In this embodiment, the magnetic guide frame 5 comprises, from top to bottom, a top plate, a side plate, and a bottom plate connected to each other. The top plate is fixed between the lower valve body 1 and the air guide plate 7. The bottom plate is located above the circuit board 3. Nine electromagnets 6 are arranged circumferentially on the bottom plate, and these nine electromagnets 6 are located below the air outlet channels 21 and correspond one-to-one with the nine air outlet channels 21. Specifically, each electromagnet 6 includes a magnetic core and a coil. The magnetic core is fixed to the upper surface of the bottom plate, and the coil is sleeved on the magnetic core. Both the magnetic guide frame 5 and the magnetic core are made of materials with good magnetic permeability, such as soft iron or silicon steel sheets.

[0030] In this embodiment, a positioning ring 71 is circumferentially arranged on the lower surface of the air guide plate 7. A valve cover 8 is arranged between the positioning ring 71 and the upper surface of the magnetic guide frame 5. The valve cover 8 is also provided with nine corresponding air outlet channels 21, and is used to close the corresponding air outlet channels 21. Specifically, the valve cover 8 is made of magnetic material and has an integral sheet structure. The lower surface of the positioning ring 71 is provided with positioning holes for positioning the valve cover 8 at intervals. A rubber ring is provided on the outside of the positioning ring 71 on the air guide plate 7. A clearance ring groove is opened on the upper surface of the top plate of the magnetic guide frame 5 below the rubber ring. The outer end of the valve cover 8 is located between the rubber ring and the clearance ring groove, and under the abutting force of the rubber ring, it tilts downward towards the outer end. At this time, the inner end of the valve cover 8 tilts upward towards the inner end. Preferably, a circular sealing gasket is provided on the upper surface of the inner end of the valve cover 8 corresponding to the shape of the air outlet channel 21. The upward tilt of the inner end of the valve cover 8 drives the sealing gasket to abut and close the air outlet channel 21.

[0031] The inner end of the valve cover 8 is located between the electromagnet 6 and the air outlet channel 21. When an external signal is transmitted to the circuit board 3, the circuit board 3 can control the corresponding control coil to be energized, so that the corresponding magnetic core of the coil generates magnetic force, thereby pulling the inner end of the valve cover 8 above the electromagnet 6 downward, so that the air outlet channel 21 corresponding to the valve cover 8 is opened. When the coil is de-energized, the magnetic force disappears, and the inner end of the valve cover 8 tilts upward again under the action of the rubber ring to close the corresponding air outlet channel 21.

[0032] In this embodiment, a glue inlet conduit is fixed to the bottom plate of the lower valve body 1 by means of integral molding or other methods. The glue inlet conduit extends upward into the working chamber, with its lower end connected to the air intake channel 11 and its upper end connected to the working chamber, thus not affecting the air intake of the air intake channel 11. At the same time, the upper surface of the glue inlet conduit is higher than the height of the circuit board 3. In use, glue is injected into the working chamber of the lower valve body 1 through the glue inlet conduit. Since the glue inlet conduit is higher than the circuit board 3, the glue can be controlled to overflow the circuit board 3. After the glue solidifies, it can fully wrap the circuit board 3.

[0033] By adding a glue inlet conduit, on the one hand, it can play a role in blocking and waterproofing, making it difficult for external water to enter the working chamber through the air intake channel 11; on the other hand, by injecting glue into the working chamber through the glue inlet conduit, the circuit board 3 can be isolated and protected, so that even if water enters the valve body, the water will not come into contact with the circuit board 3, thus preventing the circuit board 3 from burning out and ensuring the normal operation of the valve body; at the same time, after the glue solidifies, it can also protect and position the circuit board 3 when the valve body is impacted.

[0034] In this embodiment, optionally, the upper surface of the glue inlet conduit is higher than the height of the base plate of the magnetic guide frame 5, but lower than the height of the positioning plate of the magnetic guide frame 5. A clearance hole is provided on the base plate of the magnetic guide frame 5 for the glue inlet conduit to pass through. This design allows for control of the glue flow over the base plate of the magnetic guide frame 5 and the lower part of the electromagnet 6 during glue injection, thereby fixing the installed coil and improving the stability of the device; simultaneously, it prevents the glue from overflowing the upper surface of the electromagnet 6, thus avoiding affecting the opening action of the valve cover 8.

[0035] In one optional embodiment, the wall thickness of the glue inlet conduit gradually decreases from bottom to top. This design allows the glue inlet conduit to maintain strength while having a flared upper end, which better adapts to the flow characteristics of the glue during injection, guiding the glue to diffuse towards the periphery. The smaller thickness at the top also prevents glue from accumulating at the top of the glue inlet conduit.

[0036] The implementation principle of a nine-way high-frequency solenoid valve in this application embodiment is as follows: glue is injected into the inside of the solenoid valve by adding a glue inlet channel. At the same time, the height of the glue inlet channel is set to control the glue injection height, so that the glue overflows the circuit board 3 and the lower part of the electromagnet 6. After the glue solidifies, it can wrap and protect the circuit board 3, improve the waterproof performance of the circuit board 3, and improve the impact resistance of the circuit board 3.

[0037] Example 2 The difference between this embodiment and Embodiment 1 is that an insulating groove 51 is added to the magnetic guide frame 5. Specifically, refer to... Figure 2 and Figure 3An insulating groove 51 is provided on the bottom plate of the magnetic guide frame 5 between two adjacent magnetic cores. The insulating groove 51 extends radially along the bottom plate of the magnetic guide frame 5. An insulating groove 51 is also provided on the side plate of the magnetic guide frame 5. The insulating groove 51 on the side plate of the magnetic guide frame 5 corresponds to and is connected to the insulating groove 51 on the bottom plate.

[0038] The insulating groove 51 prevents electromagnetic interference between adjacent electromagnets 6, ensuring that each electromagnet 6 can operate independently and stably. The insulating groove 51 can be filled with insulating materials such as epoxy resin or silicone, which have excellent insulating properties and can effectively isolate electromagnetic interference. In this embodiment, the adhesive injected through the adhesive inlet conduit directly overflows the base plate of the magnetic guide frame 5, filling the insulating groove 51 and achieving an insulating effect. This design reduces the steps required to add insulating material and decreases processing steps.

[0039] The implementation principle of this embodiment is as follows: By opening insulating grooves 51 on the bottom plate and side plate of the magnetic guide frame 5 and connecting them, electromagnetic interference between adjacent electromagnets 6 is effectively isolated, ensuring the independent operation of each electromagnet 6 and improving the control accuracy and stability of the solenoid valve.

[0040] Example 3 The difference between this embodiment and the above embodiment is that the structure of the air outlet channel 21 has been improved.

[0041] Reference Figure 2 and Figure 4 Specifically, the air outlet channel 21 includes a straight inlet section 211, a straight outlet section 213, and a reversing section 212. The straight inlet section is located at the lower end of the guide plate 7, the straight outlet section 213 is located at the upper end of the upper valve body 2, and the reversing section 212 is located at the upper end of the guide plate 7 and the lower end of the upper valve body 2. Due to space limitations in the valve body and the requirements for the diameter and flow rate of the air outlet channel 21, in related technologies, the straight inlet section 211 and the straight outlet section 213 are arranged radially in an alternating manner, while the reversing section 212 is arranged horizontally to connect the straight inlet section 211 and the straight outlet section 213. In this arrangement, the airflow path is at a right angle, which will affect the airflow velocity. Furthermore, the small diameter of the reversing section 212 results in a small flow rate, which will affect the response speed and airflow intensity of the solenoid valve.

[0042] In this embodiment, the switching section 212 extends upward from the straight-through intake section 211 at an angle away from the central axis of the solenoid valve and connects to the straight-through outlet section 213. This angled approach shortens the airflow path and improves the response time. Furthermore, the lower sidewall of the switching section 212 extends radially from the upper end of the straight-through intake section 211 toward the lower end of the straight-through outlet section 213, forming an expansion groove 214. This effectively increases the diameter of the switching section 212, further improving the strength and efficiency of airflow. Simultaneously, the lower bottom wall of the expansion groove 214 is sloped, guiding the airflow smoothly and reducing pressure loss. Moreover, this slope is coordinated with the extension direction of the upper sidewall of the switching section 212, ensuring smooth airflow during the turning process.

[0043] In an optional embodiment, due to the configuration of the reversing section 212, the cross-section of the air outlet channel 21 at the connection between the air guide plate 7 and the upper valve body 2 is relatively large. To reduce airflow loss, a sealing structure is preferably provided between the two. Preferably, a circumferential mounting groove can be formed on the lower surface of the upper valve body 2 around the air outlet channel 21, and a sealing ring 9 can be provided in the mounting groove. The sealing ring 9 can be a rubber ring. When the upper valve body 2 and the air guide plate 7 are installed and pressed together, the sealing ring 9 is squeezed and deformed, thereby improving the sealing performance at the connection.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A nine-way high-frequency solenoid valve, characterized in that: It includes a lower valve body (1) and an upper valve body (2). The lower valve body (1) is provided with an air inlet channel (11) at its lower end, and the upper valve body (2) is provided with an air outlet channel (21). A circuit board (3) is provided between the lower valve body (1) and the upper valve body (2). The lower valve body (1) is hollow to form a working cavity, and the circuit board (3) is located inside the working cavity. The lower valve body (1) is fixedly provided with a glue inlet conduit for injecting glue into the working chamber. The upper end of the glue inlet conduit is connected to the working chamber, and the lower end of the glue inlet conduit is connected to the air inlet channel (11). The height of the upper surface of the glue inlet conduit is higher than the height of the circuit board (3).

2. The nine-way high-frequency solenoid valve according to claim 1, characterized in that: A magnetic guide frame (5) is provided between the lower valve body (1) and the upper valve body (2). The magnetic guide frame (5) includes a top plate, a side plate and a bottom plate connected to each other. A clearance hole is provided on the inner side of the magnetic guide frame (5) for the glue inlet guide to pass through. Several electromagnets (6) are arranged circumferentially on the magnetic guide frame (5). Each electromagnet (6) includes a magnetic core fixed on the bottom plate of the magnetic guide frame (5) and a coil sleeved on the magnetic core. The height of the upper surface of the glue inlet guide is higher than the height of the bottom plate of the magnetic guide frame (5).

3. A nine-way high-frequency solenoid valve according to claim 2, characterized in that: A guide plate (7) is provided between the magnetic guide frame (5) and the upper valve body (2). The air outlet channel (21) on the upper valve body (2) extends to the lower surface of the guide plate (7). A positioning ring (71) is provided at the lower end of the guide plate (7). Several valve covers (8) are provided between the positioning ring (71) and the top plate of the magnetic guide frame (5). The inner end of the valve cover (8) is located above the magnetic core and can abut against and close the air outlet channel (21). The height of the upper surface of the glue inlet guide is lower than the height of the magnetic core.

4. A nine-way high-frequency solenoid valve according to claim 3, characterized in that: The wall thickness of the glue inlet guide gradually decreases from bottom to top.

5. A nine-way high-frequency solenoid valve according to claim 3, characterized in that: An insulating groove (51) is provided on the bottom plate of the magnetic guide frame (5) between two adjacent magnetic cores, and the insulating groove (51) extends radially along the bottom plate of the magnetic guide frame (5).

6. A nine-way high-frequency solenoid valve according to claim 5, characterized in that: The side plate of the magnetic guide frame (5) is also provided with an insulating groove (51), and the insulating groove (51) on the side plate of the magnetic guide frame (5) is connected to the insulating groove (51) on the bottom plate one by one.

7. A nine-way high-frequency solenoid valve according to any one of claims 3-6, characterized in that: The air outlet channel (21) includes a straight air inlet section (211) disposed on the air guide plate (7), a straight air outlet section (213) disposed on the upper valve body (2), and a conduction reversing section (212) disposed between the air guide plate (7) and the upper valve body (2). The conduction reversing section (212) extends upward from the straight air inlet section (211) in a direction away from the central axis of the solenoid valve and is connected to the straight air outlet section (213).

8. A nine-way high-frequency solenoid valve according to claim 7, characterized in that: The lower sidewall of the conduction reversing section (212) extends radially from the upper end of the straight air intake section (211) toward the lower end of the straight air outlet section (213) to form an expansion groove, and the bottom wall of the expansion groove is set as an inclined surface.

9. A nine-way high-frequency solenoid valve according to claim 8, characterized in that: A sealing ring (9) is provided on the lower surface of the upper valve body (2), and the sealing ring (9) is arranged circumferentially along the air outlet channel (21).

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