Pendulum type mute rocker valve based on permanent magnet driving assistance and control method

Abstract

The invention belongs to the technical field of fluid control, and discloses a pendulum type mute rocker valve based on permanent magnet driving assistance and a control method, a cavity is defined by a valve body and a sealing assembly, a base and a support are sequentially arranged in a sleeved mode to achieve compact assembly, and the overall thickness of the valve is effectively reduced. A shaft penetrates through each component to realize linkage positioning, and a magnet is matched to drive an auxiliary structure to replace traditional pure coil driving to reduce power consumption; the conductive part supplies power to the coil and is matched with the magnet in the yoke to generate electromagnetic acting force to drive the sealing assembly to swing stably around the shaft, impact generated by beating of a movable armature and a static armature of a traditional electromagnet is avoided, and vibration and noise are reduced fundamentally. The sealing assembly is tightly attached to the sealing piece in the end face groove of the valve body, so that the sealing stability is guaranteed, and meanwhile slight vibration in the swinging process is buffered. Therefore, the problems that a traditional valve is large in noise and vibration are solved, the power consumption is reduced by optimizing the driving mode, and the use requirement of a high-precision scene is met.

Description

A silent rocker valve based on permanent magnet drive and its control method Technical Field

[0001] This invention belongs to the field of fluid control technology, specifically relating to a pendulum silent rocker valve based on permanent magnet drive and its control method. Background Technology

[0002] Medium isolation valves are widely used in various fluid control scenarios. Currently, the industry mostly adopts diaphragm or rocker structure, while electromagnets commonly use solenoid or snap-fit ​​structure.

[0003] The valve thickness is a significant limitation, and the engagement of the electromagnetic moving and stationary armatures generates considerable clicking noise and vibration, severely restricting the miniaturization and low power consumption of the instrument, and also causing varying degrees of noise pollution. During the energization and de-energization of the electromagnet, the large impulse of the moving armature causes valve vibration and a clicking sound, significantly impacting testing accuracy and the operating environment. Furthermore, since the power source relies entirely on the electromagnetic attraction generated by the magnetized coil, current solenoid-type or clicking-type electromagnet valves are inadequate in high-precision analytical applications requiring micro-analysis, high integration, and demands for low vibration, low power consumption, and low noise.

[0004] Existing media isolation valves use solenoid or snap-fit ​​electromagnets, paired with diaphragm or rocker valve bodies. This approach fails to meet the requirements for miniaturization, low vibration and noise, and is ill-suited for scenarios with high demands for valve integration, operational stability, and operating environment, such as high-precision analysis. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of existing media isolation valves, such as large vibration, high noise, high power consumption, large thickness and size, and large space occupation for integrated installation, which cannot meet the use requirements of high precision scenarios. The invention provides a swing-type silent rocker valve based on permanent magnet drive and control method.

[0006] To achieve the above objectives, the present invention employs the following technical solution: The present invention proposes a pendulum-type silent rocker valve based on permanent magnet drive, comprising a conductive component, a coil frame, a valve body, a sealing ring located in a groove on the end face of the valve body, and a sealing assembly disposed above the groove on the end face; a cavity is formed by the valve body and the sealing assembly; a base and a bracket are sequentially fitted onto the sealing assembly; the coil frame is symmetrically arranged on both sides of the base; a yoke is fitted at the end of the coil frame away from the base, and a magnet is adsorbed on the inner wall of the yoke; the sealing assembly, base, coil frame, and bracket are connected by a shaft, enabling the positioning and linkage of each component; the conductive component is connected to the coil frame, and in conjunction with the magnet in the yoke, drives the sealing assembly to swing around the shaft, thereby achieving the opening and closing of the valve body port and the reversal of the medium.

[0007] Preferably, the sealing element is an O-ring, and three O-rings are provided, which are installed side by side in the end face groove of the valve body.

[0008] Preferably, the sealing assembly includes a skeleton and a sealing diaphragm, wherein the skeleton and the sealing diaphragm are formed into an integral structure through a rubber vulcanization process.

[0009] Preferably, the sealing assembly, base, coil frame, and bracket are all provided with pin holes, and the shaft passes through each pin hole to realize the pin hole connection of each component; wherein, the shaft and base are clearance fit, the shaft and frame are clearance fit, and the shaft and bracket are interference fit.

[0010] Preferably, the bracket is connected to the valve body by fasteners.

[0011] Preferably, the magnet is a permanent magnet.

[0012] Preferably, the conductive component includes a pin, a connector, a compression spring, and a terminal block; the connector is a self-tapping screw, the pin is mounted on the partition of the bracket by the self-tapping screw, the compression spring is mounted on the self-tapping screw, and the terminal block is disposed on the coil frame and located at the upper end of the compression spring, with the terminal block in elastic contact with the compression spring to achieve electrical conduction.

[0013] Preferably, in the power-off state, the spring rebounds and pushes the coil frame to rotate around the axis. The coil frame drives the base to move synchronously, which in turn drives the sealing assembly to rotate counterclockwise. The sealing assembly blocks the NC port channel on the left side of the valve body, so that the common port COM is connected to the NO port on the right side, and the medium flows from the COM port to the NO port.

[0014] Preferably, in the energized state, the pin engages with the yoke to energize the coil on the coil frame; the energized coil and the magnet inside the yoke generate an electromagnetic force, driving the coil frame to rotate in the opposite direction around the axis, causing the base and sealing assembly to rotate clockwise. The sealing assembly releases the blockage of the NC port and blocks the NO port, realizing the medium reversal, connecting the COM port and the NC port, and the medium flows from the COM port to the NC port, completing the medium on / off and reversal control.

[0015] This invention proposes a control method for a pendulum silent rocker valve based on permanent magnet drive, comprising the following steps: When the conductive component is not connected to an external power source, it drives the coil frame to rotate around an axis under elastic force. The coil frame drives the sealing assembly to swing around the axis, causing the sealing assembly to block the channel at one side of the valve body, thus connecting the common port of the valve body to the other side port, allowing the medium to flow from the common port to the connected port. When an external power source is connected to the conductive component, the conductive component supplies power to the coil frame. The energized coil frame generates an electromagnetic force with the magnet inside the yoke, driving the coil frame to rotate in the opposite direction around the axis. The coil frame drives the sealing assembly to swing in the opposite direction synchronously, causing the sealing assembly to release the blockage of the aforementioned one side port while simultaneously blocking the other side port, thus achieving medium reversal and connecting the common port of the valve body to the unblocked side port, allowing the medium to flow from the common port to the unblocked port.

[0016] Compared with existing technologies, this invention has the following advantages: The present invention proposes a pendulum-type silent rocker valve based on permanent magnet drive assistance. The valve body and sealing assembly form a cavity, and the base and bracket are sequentially fitted to achieve compact assembly, effectively reducing the overall thickness of the valve and adapting to miniaturization requirements. A shaft runs through all components to achieve linkage positioning, combined with a magnet drive assistance structure, replacing the traditional pure coil drive and significantly reducing power consumption. The conductive component supplies power to the coil on the coil frame, which, in conjunction with the magnet in the yoke, generates an electromagnetic force, driving the sealing assembly to swing smoothly around the shaft. This avoids the impact caused by the striking of the moving and stationary armatures of the traditional electromagnet, reducing vibration and noise at the source. The sealing assembly fits tightly with the seal in the groove on the valve body end face, ensuring sealing stability while further buffering slight vibrations during the swing process, achieving silent operation. The overall structure, through the combination of magnet drive assistance and pendulum swing design, solves the problems of high noise and vibration in traditional valves and reduces power consumption by optimizing the drive method, meeting the needs of high-precision applications, thus solving the problems existing in the prior art.

[0017] Furthermore, by forming an integrated structure through rubber vulcanization, the structural stability and sealing reliability of the sealing assembly are improved.

[0018] Furthermore, the interference fit ensures a firm connection between the bracket and the shaft, while the clearance fit ensures that the sealing components can swing freely.

[0019] Furthermore, the symmetrically arranged coil frame, together with the magnet, forms a stable permanent magnet drive structure, improving drive stability.

[0020] Furthermore, the O-ring embedding structure forms a multi-level sealing barrier, significantly improving the sealing redundancy and reliability of the valve body end face, and effectively preventing media leakage.

[0021] This invention proposes a control method for a pendulum silent rocker valve based on permanent magnet drive. The method achieves medium flow and switching through power-on / off control, which is simple to operate and responds quickly. It utilizes the synergistic drive of elastic force and electromagnetic force to effectively reduce vibration and noise, and has low power consumption, making it suitable for high-precision scenarios. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 is a structural diagram of the pendulum silent rocker valve based on permanent magnet drive assistance of the present invention.

[0024] Figure 2 is a front view of the present invention.

[0025] Figure 3 is a bottom view of the present invention.

[0026] Figure 4 is a top view of the present invention.

[0027] Figure 5 is a side view of the present invention.

[0028] Figure 6 is a cross-sectional view of the present invention along AA as shown in Figure 3.

[0029] Figure 7 is a structural diagram of the bracket of the present invention.

[0030] Among them, 1. O-ring seal, 2. valve body, 3. sealing diaphragm, 4. skeleton, 5. shaft, 6. base, 7. bracket, 8. connector, 9. compression spring, 10. terminal block, 11. coil skeleton, 12. bracket, 13. yoke, 14. back cover, 15. pin, 16. permanent magnet. Detailed Implementation

[0031] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The invention will now be described in further detail with reference to the accompanying drawings: Example 1: The present invention proposes a pendulum-type silent rocker valve based on permanent magnet drive, as shown in Figures 1 to 7. It includes a conductive component, a coil frame 11, a valve body 2, a sealing ring located in a groove on the end face of the valve body 2, and a sealing assembly disposed above the groove on the end face. A cavity is formed by the valve body 2 and the sealing assembly. A base 6 and a bracket 7 are sequentially fitted onto the sealing assembly, and the bracket 7 is connected to the valve body 2 by fasteners. The sequential fitting of the base 6 and the bracket 7 achieves a compact assembly, effectively reducing the overall thickness of the valve and adapting to miniaturization requirements. The coil frame 11 is symmetrically arranged in the grooves on both sides of the base 6. A yoke 13 is fitted at the end of the coil frame 11 away from the base 6. A magnet 16, which is a permanent magnet, is attracted to the inner wall of the yoke 13. The rear cover 14 and the bracket 7 are connected by a snap-fit ​​to fix the yoke 13 in the middle. The sealing component, the base 6, the coil frame 11 and the bracket 7 are connected by a shaft 5 to realize the positioning and linkage of each component. The shaft 5 is used to drive the auxiliary structure to realize linkage positioning, which is used in conjunction with the magnet 16 to drive the auxiliary structure, replacing the traditional pure coil drive and greatly reducing power consumption. The conductive component is connected to the coil frame 11 and works with the magnet 16 in the yoke 13 to drive the sealing component to swing around the shaft 5, realizing the opening and closing of the valve body 2 port and the switching of the medium. The conductive component supplies power to the coil frame 11 and works with the magnet 16 in the yoke 13 to generate an electromagnetic force, driving the sealing component to swing smoothly around the shaft 5, avoiding the impact caused by the collision of the moving and stationary armatures of the traditional electromagnet, and reducing vibration and noise from the source.

[0036] Among them, the sealing element is an O-ring 1, and there are three O-rings 1. The three O-rings 1 are elastically and side by side embedded in the end face groove of the valve body 2. The O-ring 1 embedding structure forms a multi-level sealing barrier, which significantly improves the sealing redundancy and reliability of the valve body 2 end face and effectively prevents media leakage.

[0037] The sealing assembly includes a skeleton 4 and a sealing diaphragm 3. The skeleton 4 and the sealing diaphragm 3 are integrated into a single structure through a rubber vulcanization process, which improves the structural stability and sealing reliability of the sealing assembly.

[0038] Among them, the sealing component, base 6, coil frame 11 and bracket 7 are all provided with pin holes, and the shaft 5 passes through each pin hole to realize the pin hole connection of each component; the shaft 5 and base 6 are clearance fit, the shaft 5 and frame 4 are clearance fit, and the shaft (5) and bracket (7) are interference fit.

[0039] The conductive components include a pin 15, a connector 8, a spring 9, and a terminal 10. The connector 8 is a self-tapping screw. The pin 15 is mounted on the partition of the bracket 7 by the self-tapping screw. The spring 9 is mounted on the self-tapping screw, and the other end of the spring 9 is clipped onto the prototype cap of the terminal 10. Therefore, the terminal 10 is set on the coil frame 11 and located above the spring 9. The lead end of the enameled wire wound on the coil frame 11 is welded to the metal terminal 10. The terminal 10 is in elastic contact with the spring 9, and the spring 9 connects the enameled wire on the coil frame 11 to the pin 15 to conduct the circuit.

[0040] In the de-energized state, the spring 9 rebounds, pushing the coil frame 11 to rotate around the shaft 5. The coil frame 11 drives the base 6 to move synchronously, which in turn drives the sealing assembly to rotate counterclockwise. The sealing assembly blocks the NC port channel on the left side of the valve body 2, connecting the common port COM with the right port NO, allowing the medium to flow from the COM port to the NO port. In the energized state, the pin 15 cooperates with the yoke 13 to energize the coil on the coil frame 11. The energized coil generates an electromagnetic force with the magnet 16 inside the yoke 13, driving the coil frame 11 to rotate counterclockwise around the shaft 5. This causes the base 6 and the sealing assembly to rotate clockwise, releasing the blockage of the NC port and blocking the NO port, thus achieving medium reversal and connecting the COM port with the NC port. The medium flows from the COM port to the NC port, completing the medium on / off and reversal control.

[0041] The detailed working process of the pendulum silent rocker valve based on permanent magnet drive proposed in this invention is as follows: When power is off, the spring 9 rebounds, pushing the coil frame 11 to rotate around the shaft 5. This causes the base 6 to push the sealing diaphragm 3 and the integrated sealing assembly of the frame 4 to rotate counterclockwise. The integrated sealing assembly of the diaphragm 3 and the frame 4 blocks the NC port channel on the left side of the valve body 2, achieving connection between the common port COM and the right port NO. The medium flows from the COM port to the NO port of the valve body 2. When power is on, the energized coil frame 11 moves in the permanent magnetic field formed by four permanent magnets 16, cutting magnetic lines of force and rotating clockwise around the shaft 5 under the action of Ampere's force, compressing the spring 9. The coil frame 11 rotates around the shaft 5 under the action of Ampere's force, causing the base 6 to push the integrated sealing assembly of the diaphragm 3 and the frame 4 to rotate clockwise. The integrated sealing assembly of the diaphragm 3 and the frame 4 blocks the NO port channel on the right side of the valve body 2, achieving connection between the common port COM and the right port NC. The medium flows from the COM port to the NC port of the valve body 2. This process is repeated continuously to achieve the switching and opening / closing of the medium.

[0042] Example 2: A control method for a pendulum silent rocker valve based on permanent magnet drive assistance proposed in this invention includes the following steps: When the conductive component is not connected to an external power source: Under elastic force, the coil frame 11 is pushed to rotate around the shaft 5. The coil frame 11 drives the sealing assembly to swing around the shaft 5, causing the sealing assembly to block the port channel on one side of the valve body 2, thus connecting the common port of the valve body 2 with the other side port, and the medium flows from the common port to the connected port; When the conductive component is connected to an external power source: The conductive component supplies power to the coil frame 11. After being energized, the coil frame 11 and the magnet 16 in the yoke 13 generate an electromagnetic force, driving the coil frame 11 to rotate in the opposite direction around the shaft 5. The coil frame 11 drives the sealing assembly to swing synchronously in the opposite direction, causing the sealing assembly to release the blockage of the aforementioned one side port and simultaneously block the other side port, realizing the reversal of the medium flow, connecting the common port of the valve body 2 with the unblocked side port, and the medium flows from the common port to the unblocked port.

[0043] This invention proposes a permanent magnet driven assisted pendulum silent rocker valve, which has the following advantages: 1) Ingenious structural design, compact size, low power consumption, and easy integration and installation. The drive system uses an energized coil to cut magnetic field lines in a permanent magnet, utilizing the superposition of the permanent magnetic field and the magnetic field of the energized coil to reduce power consumption and increase driving force. 2) The sealing structure adopts a rocker-type structure, ensuring a constant valve cavity volume during valve opening and closing, reducing the pumping effect of the valve, improving the accuracy of reagent dispensing, and reducing analytical errors of the equipment. 3) The use of a pendulum-type electromagnetic structure design optimizes and minimizes the thickness, reducing the noise and vibration caused by the engagement of the moving armature, and improving the stability of the valve. 4) The use of a rocker-type sealing structure reduces the curvature deformation of the rubber sealing gasket, extending the service life of the valve.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A pendulum-type silent rocker valve based on permanent magnet drive, characterized in that, The device includes a conductive component, a coil frame (11), a valve body (2), a sealing ring located in the end face groove of the valve body (2), and a sealing assembly set above the end face groove; a cavity is formed by the valve body (2) and the sealing assembly; a base (6) and a bracket (7) are sequentially fitted on the sealing assembly; the coil frame (11) is symmetrically arranged on both sides of the base (6); a yoke (13) is fitted on the end of the coil frame (11) away from the base (6); a magnet (16) is adsorbed on the inner side wall of the yoke (13); the sealing assembly, the base (6), the coil frame (11) and the bracket (7) are connected through the shaft (5) to realize the positioning and linkage of each component; the conductive component is connected to the coil frame (11) and, in conjunction with the magnet (16) in the yoke (13), drives the sealing assembly to swing around the shaft (5) to realize the opening and closing of the valve body (2) port and the reversal of the medium.

2. The pendulum silent rocker valve based on permanent magnet drive assistance according to claim 1, characterized in that, The sealing element is an O-ring (1), and there are three O-rings (1). The three O-rings (1) are installed side by side in the end face groove of the valve body (2).

3. The pendulum silent rocker valve based on permanent magnet drive assistance according to claim 1, characterized in that, The sealing assembly includes a skeleton (4) and a sealing diaphragm (3), which are integrated into a single structure through a rubber vulcanization process.

4. The pendulum silent rocker valve based on permanent magnet drive assistance according to claim 1, characterized in that, The sealing assembly, base (6), coil frame (11) and bracket (7) are all provided with pin holes, and the shaft (5) passes through each pin hole to realize the pin hole connection of each component; wherein, the shaft (5) and base (6) are clearance fit, the shaft (5) and frame (4) are clearance fit, and the shaft (5) and bracket (7) are interference fit.

5. The pendulum silent rocker valve based on permanent magnet drive assistance according to claim 1, characterized in that, The bracket (7) is connected to the valve body (2) by fasteners.

6. The pendulum silent rocker valve based on permanent magnet drive assistance according to claim 1, characterized in that, The magnet (16) is a permanent magnet.

7. The pendulum silent rocker valve based on permanent magnet drive assistance according to claim 1, characterized in that, The conductive components include a pin (15), a connector (8), a compression spring (9), and a terminal block (10). The connector (8) is a self-tapping screw. The pin (15) is installed on the partition of the bracket (7) by the self-tapping screw. The compression spring (9) is installed on the self-tapping screw. The terminal block (10) is set on the coil frame (11) and located at the upper end of the compression spring (9). The terminal block (10) and the compression spring (9) are in elastic contact to realize electrical conduction.

8. The pendulum silent rocker valve based on permanent magnet drive assistance according to claim 7, characterized in that, In the power-off state, the spring (9) rebounds and pushes the coil frame (11) to rotate around the shaft (5). The coil frame (11) drives the base (6) to move synchronously, thereby driving the sealing assembly to rotate counterclockwise. The sealing assembly blocks the NC port channel on the left side of the valve body (2), so that the common port COM is connected to the NO port on the right side, and the medium flows from the COM port to the NO port.

9. The pendulum silent rocker valve based on permanent magnet drive assistance according to claim 7, characterized in that, When energized, the pin (15) and the yoke (13) work together to energize the coil on the coil frame (11); the energized coil and the magnet (16) inside the yoke (13) generate an electromagnetic force, driving the coil frame (11) to rotate in the opposite direction around the axis (5), which in turn drives the base (6) and the sealing assembly to rotate clockwise. The sealing assembly releases the blockage of the NC port and blocks the NO port, realizing the medium reversal, so that the COM port and the NC port are connected, and the medium flows from the COM port to the NC port, completing the medium on / off and reversal control.

10. A control method for a pendulum silent rocker valve based on permanent magnet drive assistance, characterized in that, The swing-type silent rocker valve according to any one of claims 1 to 9 includes the following steps: the conductive component is not connected to an external power source, and under the elastic force, it pushes the coil frame (11) to rotate around the shaft (5). The coil frame (11) drives the sealing component to swing around the shaft (5), so that the sealing component blocks the port channel on one side of the valve body (2), realizing the connection between the common port of the valve body (2) and the other side port, and the medium flows from the common port to the connected port; the conductive component is connected to an external power source, and the conductive component supplies power to the coil frame (11). After being energized, the coil frame (11) and the magnet (16) in the yoke (13) generate an electromagnetic force, driving the coil frame (11) to rotate in the opposite direction around the shaft (5). The coil frame (11) drives the sealing component to swing in the opposite direction synchronously, so that the sealing component releases the blockage of the above-mentioned port on one side and blocks the other side port at the same time, realizing the reversal of the medium, so that the common port of the valve body (2) is connected to the unblocked port on one side, and the medium flows from the common port to the unblocked port.

Images