A pneumatic control valve suitable for multiple gas paths

Abstract

The utility model belongs to control valve technical field discloses a kind of pneumatic control valve suitable for multiple gas path. First air inlet and a plurality of first air outlet are equipped on valve shell, and a plurality of gas nozzle are equipped along valve shell periphery;First air outlet and gas nozzle are set through air passage one-to-one correspondence communication;Air passage and valve shell are integrally formed;Movable valve piece is adapted to be arranged in mounting hole, and is sleeved on driving part rotating shaft;And heteromorphic groove is set on its side away from driving part;Second air inlet, and a plurality of second air outlet and a plurality of third air outlet are set on fixed valve piece;Fixed valve piece is simultaneously surface pasted on valve shell and movable valve piece;The air inlet of second air inlet is set in communication with first air inlet, and the outlet is communicated with heteromorphic groove;The air inlet of second air outlet is set in communication with third air outlet one-to-one, and the outlet is set in communication with first air outlet one-to-one.The utility model has the advantages of small noise, simple structure, good sealing and long service life simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of control valve technology, specifically to a pneumatic control valve suitable for multiple air paths. Background Technology

[0002] Pneumatic control valves are key control structures in pneumatic systems, used to control the direction, flow rate, or pressure of gas as needed.

[0003] Specifically, it is widely used in fields such as intelligent manufacturing and smart homes. For example, in intelligent manufacturing, pneumatic control valves are used to control the sequential opening and closing of alignment fixtures at opposite corners to align substrates, etc.; pneumatic control valves are also used to perform vacuum operations on vacuum pins on robotic arms to adhere items to the robotic arm and prevent them from falling during the robotic arm's movement. As another example, in smart home scenarios, pneumatic control valves are used to circulate and inflate airbags in home massage cushions or car massage seats to massage target areas of the user.

[0004] In existing technologies, whether in smart manufacturing or smart home scenarios, the corresponding pneumatic control valves are all designed based on electromagnetic principles, essentially solenoid valves. However, in practical applications, electromagnetic pneumatic control valves have the following drawbacks: First, the solenoid valves and the synchronously controlled air circuits need to be configured accordingly. Taking alignment scenarios as an example, the alignment clamps at diagonal positions are controlled by one set of solenoid valves, requiring at least two sets of solenoid valves to complete the alignment control. This results in complex air circuits, making assembly prone to errors, and occupying a large amount of space. Second, the fixed valve core and moving valve core in the solenoid valve engage under electromagnetic action, leading to significant noise at the moment of contact, which severely affects the performance in smart home scenarios. Furthermore, when the air source pressure is too high, the sealing between the engaging fixed and moving valve cores is difficult to guarantee. Finally, the heat generated during the high-frequency engagement of the fixed and moving valve cores can also cause lifespan defects in the entire solenoid valve. Utility Model Content

[0005] The purpose of this utility model is to provide a pneumatic control valve suitable for multiple air paths, so as to solve the technical problems of existing electromagnetic pneumatic control valves when performing multiple air path control, such as complex air paths, large space occupation, high noise, and difficulty in guaranteeing sealing performance and service life under extreme conditions.

[0006] To achieve the above objectives, the present invention proposes the following technical solution:

[0007] A pneumatic control valve suitable for multiple air passages includes a moving valve plate, a valve body, and a stationary valve plate that cooperate with each other;

[0008] The valve body has a mounting hole and a first air inlet hole, and several first air outlet holes are provided along the circumference of the mounting hole. Several air nozzles are provided along the outer circumference of the valve body. The first air outlet holes and air nozzles are connected one-to-one through air passages. Each air passage is integrally formed with the valve body and is located on the side away from the fixed valve plate.

[0009] The movable valve plate is fitted through the mounting hole and sleeved on the rotating shaft of the drive unit to have the freedom of rotational movement; and a special-shaped groove is opened on the side away from the drive unit.

[0010] The fixed valve plate is provided with a second air inlet, a number of second air outlets and a number of third air outlets; the fixed valve plate is simultaneously attached to the valve body and the moving valve plate; wherein, the air inlet end of the second air inlet is connected to the first air inlet, and the air outlet end is connected to the irregular groove; the air inlet end of the second air outlet is connected to the third air outlet in a one-to-one correspondence, and the air outlet end is connected to the first air outlet in a one-to-one correspondence.

[0011] When the moving valve plate rotates, all third air outlets are either not covered by the passive valve plate or partially covered by the passive valve plate; and the third air outlets covered by the passive valve plate are connected to the irregular groove.

[0012] Furthermore, it includes a first sealing element; on the side of the valve body near the fixed valve plate, a plurality of first sealing grooves are provided along the outer periphery of each first air outlet; wherein, each first sealing groove is interconnected, the first sealing element is placed in each first sealing groove, and abuts against the corresponding position of the fixed valve plate.

[0013] Furthermore, on the side of the fixed valve plate away from the valve body, a number of first grooves are provided to connect the second and third air outlets of each group; wherein, a second valve cover is attached to the empty end face of the fixed valve plate, and the corresponding positions of each first groove and the second valve cover are closed to form an air passage connecting the second and third air outlets.

[0014] Furthermore, it includes a second seal; each of the first grooves is interconnected and has a second sealing groove along its outer periphery; the second seal is placed in each of the second sealing grooves and abuts against the corresponding position of the second valve cover.

[0015] Furthermore, a third air inlet is provided on the fixed valve plate, the second air inlet is provided in accordance with the first air inlet, and the third air inlet is provided in accordance with the middle position of the irregular groove.

[0016] Among them, on the side of the fixed valve plate away from the valve body, a second groove is provided to connect the second air inlet and the third air inlet, which surrounds the corresponding position of the second valve cover to form an air passage connecting the second air inlet and the third air inlet.

[0017] Furthermore, it includes a third sealing element; a third sealing groove is provided along the outer periphery of the second groove, the third sealing element is placed in the third sealing groove and abuts against the corresponding position of the second valve cover.

[0018] Furthermore, the drive unit is a motor.

[0019] Furthermore, the movable valve plate includes a main body and a first protrusion extending outward along the main body; wherein the first protrusion dynamically engages with a third air outlet; and a shaped groove is simultaneously formed on the main body and the first protrusion.

[0020] Furthermore, it includes a position sensor, the detection area of ​​which corresponds to the moving valve plate to obtain the rotational displacement of the moving valve plate.

[0021] Furthermore, the position sensor is a Hall sensor, and the moving valve plate includes a second protrusion, in which a magnet is embedded; the Hall sensor is fixedly installed at any position on the circumference of the magnet when the moving valve plate rotates.

[0022] Beneficial effects:

[0023] This technical solution provides a new pneumatic control valve for multi-path control to simultaneously solve the various defects of existing electromagnetic pneumatic control valves.

[0024] The pneumatic control valve includes a valve body, a moving valve plate, and a fixed valve plate that cooperate with each other. Specifically, the valve body has a mounting hole and a first air inlet, several first air outlets are provided along the circumference of the mounting hole, and several air nozzles are provided along the outer circumference of the valve body; wherein, the first air outlets and air nozzles are connected one-to-one through air passages; each air passage is integrally formed with the valve body and is located on the side away from the fixed valve plate. The moving valve plate is adapted to pass through the mounting hole and is sleeved on the rotating shaft of the drive unit to have the freedom of rotational movement; and a special-shaped groove is provided on its side away from the drive unit. The fixed valve plate has a second air inlet, several second air outlets, and several third air outlets; it is simultaneously attached to the valve body and the moving valve plate; wherein, the air inlet end of the second air inlet is connected to the first air inlet, and the air outlet end is connected to the special-shaped groove; the air inlet end of the second air outlet is connected one-to-one with the third air outlet, and the air outlet end is connected one-to-one with the first air outlet. When the moving valve plate rotates, all third air outlets are either not covered by the passive valve plate or partially covered by the passive valve plate; and the third air outlets covered by the passive valve plate are connected to the irregular groove.

[0025] In practical implementation, if the controlled component needs to be driven by venting, the moving valve plate is moved to a position where all third vent holes are not covered, at which point the entire air circuit is disconnected. If the controlled component needs to be driven by inflating, the moving valve plate is moved to the third vent hole corresponding to the controlled component. At this time, the fluid from the external air source will enter the second air inlet on the fixed valve plate through the first air inlet on the valve housing, and flow into the air cavity surrounded by the irregular grooves on the fixed and moving valve plates. It will then flow through the third and second vent holes to the corresponding air nozzles, and finally through the air nozzles to the driving position of the controlled component, thereby causing it to move or inflate. Therefore, this technical solution transforms the existing suction-operation between the fixed and moving valve cores into a rotational displacement operation between the fixed and moving valve plates. This reduces noise and avoids air leakage caused by changes in the cooperation state when the pressure is high. Simultaneously, corresponding second and third air outlets can be set on the fixed valve plate according to the number of controlled components, and corresponding first air outlets and nozzles can be set on the valve body. Then, through the rotational movement of the moving valve plate and its cooperation with the corresponding third air outlet, coordinated pneumatic control of multiple controlled components can be achieved. Furthermore, the corresponding air pipes are integrated into the valve body, effectively reducing the complexity and space occupation of the entire pneumatic control valve's air path structure and overall structure. Moreover, the air path between the interconnected second and third air outlets also improves the airflow stability into the nozzle through fluid buffering, ensuring the reliability of the control action.

[0026] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered as part of the utility model subject matter of this disclosure, provided that such concepts do not contradict each other.

[0027] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description

[0028] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0029] Figure 1 This is an exploded view of the pneumatic control valve applicable to multiple air passages described in this embodiment;

[0030] Figure 2 This is a cross-sectional view of the pneumatic control valve applicable to multiple air passages described in this embodiment;

[0031] Figure 3 This is a front view of the valve housing described in this embodiment;

[0032] Figure 4 This is a rear view of the valve housing described in this embodiment;

[0033] Figure 5 This is a front view of the moving valve plate described in this embodiment;

[0034] Figure 6 This is a rear view of the moving valve plate described in this embodiment;

[0035] Figure 7 This is a front view of the fixed valve plate described in this embodiment;

[0036] Figure 8 This is a rear view of the fixed valve plate described in this embodiment;

[0037] Figure 9 This is a schematic diagram of the installation of the position sensor described in this embodiment.

[0038] The reference numerals in the figure are as follows: 1 is valve housing, 2 is moving valve plate, 3 is fixed valve plate, 4 is first valve cover, 5 is second valve cover, 6 is drive unit, 7 is transmission disc, 8 is first seal, 9 is second seal, 10 is third seal, 11 is position sensor, 12 is magnet; 1.1 is mounting hole, 1.2 is first air inlet, 1.3 is first air outlet, 1.4 is air nozzle, 1.5 is first sealing groove, 1.6 is air passage; 2.1 is main body, 2.2 is first protrusion, 2.3 is second protrusion, 2.4 is irregular groove, 2.5 is transmission groove; 3.1 is second air inlet, 3.2 is third air inlet, 3.3 is second air outlet, 3.4 is third air outlet, 3.5 is first groove, 3.6 is second groove, 3.7 is second sealing groove, 3.8 is third sealing groove. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains.

[0040] The terms "first," "second," and similar words used in this utility model patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the features, integrals, steps, operations, elements, and / or components listed following "comprising" or "including," and do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] Pneumatic control valves are key structures in pneumatic systems and are widely used in fields such as intelligent manufacturing and smart homes. Existing pneumatic control valves are all designed based on electromagnetic principles, essentially solenoid valves. However, in practical applications, electromagnetic pneumatic control valves have the following drawbacks: (1) Complex air paths, prone to errors during assembly, and large space requirements. (2) Loud noise during the moment of contact when the stationary and moving valve cores engage. (3) When the pressure at the air source is too high, the sealing between the engaging stationary and moving valve cores is difficult to guarantee; simultaneously, the high-frequency switching of the solenoid valve causes heat generation, which reduces the valve's lifespan. Based on this, this embodiment proposes a pneumatic control valve suitable for multiple air paths to simultaneously solve the above technical problems.

[0042] The pneumatic control valve applicable to multiple air passages disclosed in this utility model will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0043] Combination Figures 1 to 9 As shown, the pneumatic control valve includes a valve housing 1, and a moving valve plate 2, a fixed valve plate 3, a first valve cover 4, and a second valve cover 5 disposed based on the valve housing 1.

[0044] In terms of specific structure and assembly, the valve housing 1 has a mounting hole 1.1 and a first air inlet 1.2. In this embodiment, the first air inlet 1.2 is located at the top center of the valve housing 1 and is an L-shaped hole. The vertical part of the L-shaped hole is perpendicular to the mounting hole 1.1, and the horizontal part of the L-shaped hole is parallel to the mounting hole 1.1. Simultaneously, to facilitate the entry of an external air source, the air inlet end of the L-shaped hole extends outward to form an air inlet pipe. A plurality of first air outlet holes 1.3 are spaced apart circumferentially along the mounting hole 1.1, and a plurality of air nozzles 1.4 are arranged along the outer periphery of the valve housing 1. In this embodiment, each air nozzle 1.4 is located on the left and right sides of the valve housing 1. The first air outlet holes 1.3 and air nozzles 1.4 are connected one-to-one through an integrally formed air passage 1.6 with the valve housing 1. Specifically, each air passage 1.6 is located on the side away from the fixed valve plate 3.

[0045] The movable valve plate 2 is fitted through the mounting hole 1.1 and sleeved on the rotating shaft of the drive unit 6 to have the freedom of rotational movement. The drive unit 6, in principle, can be a stepper motor or a permanent magnet synchronous motor; in terms of conductor structure, it can be a round wire motor or a flat wire motor. In this embodiment, a stepper motor with a round conductor is specifically used. As a specific implementation, the stepper motor is embedded in the first valve cover 4, and the first valve cover 4 is pressed and fastened to the valve housing 1. A transmission groove 2.5 is formed on the side of the movable valve plate 2 near the stepper motor, and a transmission disk 7 is engaged in the transmission groove 2.5 and sleeved on the rotating shaft of the stepper motor. At this time, the transmission disk 7 will rotate synchronously with the stepper motor, driving the movable valve plate 2 to rotate synchronously. As a further specific implementation, the transmission disk 7 is a star-shaped disk, and the transmission groove 2.5 is a corresponding star-shaped groove. Simultaneously, a shaped groove 2.4 is also formed on the side of the movable valve plate 2 away from the drive unit 6. In this embodiment, the movable valve plate 2 includes a main body 2.1 and a first protrusion 2.2 extending outward along the main body 2.1. At this time, the irregular groove 2.4 simultaneously covers the main body 2.1 and the first protrusion 2.2.

[0046] The fixed valve plate 3 has a second air inlet 3.1, several second air outlets 3.3, and several third air outlets 3.4. In assembly, the fixed valve plate 3 is simultaneously attached to both the valve housing 1 and the moving valve plate 2. Specifically, the air inlet end of the second air inlet 3.1 is connected to the first air inlet 1.2, and the air outlet end is connected to the irregular groove 2.4. In another specific embodiment, the fixed valve plate 3 also has a third air inlet 3.2 connected to the second air inlet 3.1. In this case, in assembly, the air inlet end of the second air inlet 3.1 is coaxially aligned with the air outlet end of the L-shaped first air inlet 1.2, and the third air inlet 3.2 corresponds to the irregular groove 2.4 on the main body 2.1 of the moving valve plate. The air inlet ends of the second air outlets 3.3 and 3.4 are connected in a one-to-one correspondence, and their outlet ends are connected in a one-to-one correspondence with the first air outlets 1.3.

[0047] In terms of specific structural design, on the side of the fixed valve plate 3 away from the valve housing 1, several first grooves 3.5 are provided, connecting each group of second air outlets 3.3 and third air outlets 3.4. Furthermore, each group of second air outlets 3.3 and third air outlets 3.4 are arranged circumferentially. On the side of the fixed valve plate 3 away from the valve housing 1, a second groove 3.6 is also provided, connecting the second air inlet 3.1 and the third air inlet 3.2. Simultaneously, a second valve cover 5 is attached to the side of the fixed valve plate 3 away from the moving valve plate 2. At this time, the corresponding positions of each first groove 3.5 and the second valve cover 5 enclose each other to form an air passage connecting the second air outlets 3.3 and the third air outlets 3.4, and the corresponding positions of the second grooves 3.6 and the second valve cover 5 enclose each other to form an air passage connecting the second air inlet 3.1 and the third air inlet 3.2. In one specific embodiment, the second valve cover 5 is also snap-fitted into the valve housing 1.

[0048] Specifically, when the moving valve plate 2 rotates, all third vent holes are either not covered by the passive valve plate or only partially covered by it; and the portion of the third vent holes covered by the passive valve plate is connected to the irregular groove 2.4. To improve the reliability of the rotational movement of the moving valve plate 2, the surfaces on which the moving valve plate 2 and the fixed valve plate 3 mate are made smooth surfaces.

[0049] As a further specific implementation, a second sealing element 9 is provided to ensure the airtightness of the gas path at this time. In this case, each of the first grooves 3.5 is interconnected, and a second sealing groove 3.7 is formed along their outer periphery. The second sealing element 9 is placed within each of the second sealing grooves 3.7 and abuts against the corresponding position of the second valve cover 5. A third sealing element 10 is also provided. In this case, a third sealing groove 3.8 is formed along the outer periphery of the second groove 3.6, and the third sealing element 10 is placed within the third sealing groove 3.8 and abuts against the corresponding position of the second valve cover 5. In this embodiment, since all the second sealing grooves 3.7 and the third sealing grooves 3.8 are located on the same side, and the corresponding second sealing element 9 and the third sealing element 10 are also located on the same side, in order to simplify the structure, all the second sealing grooves 3.7 and the third sealing grooves 3.8 are interconnected, thereby integrating the second sealing element 9 and the third sealing element 10 into a single design (specifically as follows). Figure 1 (as shown in the image).

[0050] Similarly, considering the airtightness between the fixed valve plate 3 and the first vent 1.3 of the valve body, a first sealing element 8 is also provided. On the side of the valve body 1 near the fixed valve plate 3, several interconnected first sealing grooves 1.5 are formed along the outer periphery of each first vent 1.3. At this time, the first sealing element 8 is placed in each first sealing groove 1.5 and abuts against the corresponding position of the fixed valve plate 3.

[0051] In a preferred embodiment, a position sensor 11 is also provided to monitor the displacement of the movable valve plate 2 to determine which nozzle is currently in the venting state according to a preset step value, thereby identifying the specific controlled component. The detection area of ​​the position sensor 11 corresponds to the movable valve plate 2 to obtain the rotational displacement of the movable valve plate 2. Specifically, the position sensor 11 can be a Hall sensor, a photoelectric sensor, or other sensor capable of acquiring position signals. In this embodiment, the position sensor 11 is a Hall sensor. To facilitate its installation, the movable valve plate 2 includes a second protrusion 2.3, in which a magnet 12 is embedded. The Hall sensor is fixedly mounted on the first valve cover 4 and located at any corresponding position on the circumference of the magnet 12 when the movable valve plate rotates.

[0052] In practical implementation, if it is necessary to vent the controlled component, the movable valve plate 2 is moved to a position where all the third vent holes 3.4 are not covered, at which point the entire air circuit is disconnected. If it is necessary to pneumatically operate the controlled component, the movable valve plate 2 is moved to the third vent hole 3.4 corresponding to the controlled component. At this time, the fluid from the external air source will enter the second air inlet 3.1 on the fixed valve plate 3 through the first air inlet 1.2 on the valve housing 1, and flow into the air cavity surrounded by the fixed valve plate 3 and the irregular groove 2.4 through the third air inlet 3.2. Then, it will flow through the third vent hole 3.4 and the second vent hole 3.3 to the corresponding air nozzle 1.4, and then through the air nozzle 1.4 to the drive position of the controlled component, thereby causing it to move or inflate. Specifically, if the controlled component is a positioning clamp, the two corresponding air nozzles are connected to the two sets of positioning clamps respectively. At this point, the first set of alignment clamps, diagonally opposite to one set of the substrate, is displaced by an inflation operation to achieve clamping and alignment. Then, the second set of alignment clamps, diagonally opposite to another set of the substrate, is displaced by the inflation operation to achieve clamping and alignment. After alignment is complete, the alignment clamps are released by a deflation operation to complete the alignment process. If the controlled component is a car massage seat, the airbags are sequentially inflated and deflated via corresponding air nozzles to achieve massage operations on different target areas.

[0053] Therefore, this embodiment transforms the existing suction-operation between the fixed valve core and the moving valve core into a rotational displacement operation between the fixed valve plate 3 and the moving valve plate 2. This reduces noise and prevents air leakage caused by changes in the engagement state of the two components under high pressure. Furthermore, corresponding second and third air outlets can be provided on the fixed valve plate 3 according to the number of controlled components, and corresponding first air outlets and nozzles can be provided on the valve housing. Thus, the coordinated inflation of multiple controlled components can be achieved through the rotational movement of the moving valve plate 2 and its engagement with the corresponding third air outlet. The corresponding air pipes are integrated into the valve housing, effectively reducing the complexity and space occupied by the entire pneumatic control valve's air path structure and overall structure. Moreover, the interconnected air path between the second and third air outlets provides airflow buffering to improve the stability of the airflow flowing into the nozzle.

[0054] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. For example, although the structure described in this embodiment is a pneumatic control valve structure, when the control fluid in the control valve is replaced with a liquid, the control valve still has the corresponding valve control function. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A pneumatic control valve suitable for multiple gas paths, characterized by, This includes the moving valve plate, valve body, and stationary valve plate that cooperate with each other; The valve body has a mounting hole and a first air inlet hole, and several first air outlet holes are provided along the circumference of the mounting hole. Several air nozzles are provided along the outer circumference of the valve body. The first air outlet holes and air nozzles are connected one-to-one through air passages. Each air passage is integrally formed with the valve body and is located on the side away from the fixed valve plate. The movable valve plate is fitted through the mounting hole and sleeved on the rotating shaft of the drive unit to have the freedom of rotational movement; and a special-shaped groove is opened on the side away from the drive unit. The fixed valve plate is provided with a second air inlet, a number of second air outlets and a number of third air outlets; the fixed valve plate is simultaneously attached to the valve body and the moving valve plate; wherein, the air inlet end of the second air inlet is connected to the first air inlet, and the air outlet end is connected to the irregular groove; the air inlet end of the second air outlet is connected to the third air outlet in a one-to-one correspondence, and the air outlet end is connected to the first air outlet in a one-to-one correspondence. When the moving valve plate rotates, all third air outlets are either not covered by the passive valve plate or partially covered by the passive valve plate; and the third air outlets covered by the passive valve plate are connected to the irregular groove.

2. The pneumatic control valve suitable for multiple gas paths according to claim 1, characterized by, It includes a first sealing element; on the side of the valve body near the fixed valve plate, a plurality of first sealing grooves are provided along the outer periphery of each first air outlet; wherein, each first sealing groove is interconnected, the first sealing element is placed in each first sealing groove, and abuts against the corresponding position of the fixed valve plate.

3. The pneumatic control valve suitable for multiple gas paths according to claim 1, characterized by, On the side of the fixed valve plate away from the valve body, there are several first grooves that connect the second and third air outlets of each group; wherein, a second valve cover is attached to the empty end face of the fixed valve plate, and the corresponding positions of each first groove and the second valve cover are closed to form an air passage connecting the second and third air outlets.

4. The pneumatic control valve suitable for multiple gas paths according to claim 3, characterized by, It includes a second seal; each of the first grooves is interconnected and has a second sealing groove along its outer periphery; the second seal is placed in each of the second sealing grooves and abuts against the corresponding position of the second valve cover.

5. The pneumatic control valve suitable for multiple gas paths according to claim 3, characterized by, The valve plate is provided with a third air inlet, the second air inlet is provided in accordance with the first air inlet, and the third air inlet is provided in accordance with the middle position of the irregular groove. Among them, on the side of the fixed valve plate away from the valve body, a second groove is provided to connect the second air inlet and the third air inlet, which surrounds the corresponding position of the second valve cover to form an air passage connecting the second air inlet and the third air inlet.

6. The pneumatic control valve suitable for multiple gas paths according to claim 5, characterized by, It includes a third sealing element; a third sealing groove is provided along the outer periphery of the second groove, the third sealing element is placed in the third sealing groove and abuts against the corresponding position of the second valve cover.

7. The pneumatic control valve suitable for multiple gas paths according to claim 1, characterized by, The drive unit is a motor.

8. The pneumatic control valve suitable for multiple gas paths according to claim 1, characterized by, The movable valve plate includes a main body and a first protrusion extending outward along the main body; wherein the first protrusion dynamically engages with a third air outlet; and a shaped groove is simultaneously formed on the main body and the first protrusion.

9. The pneumatic control valve suitable for multiple gas paths according to claim 1, characterized by, It includes a position sensor, the detection area of ​​which corresponds to the moving valve plate to obtain the rotational displacement of the moving valve plate.

10. The pneumatic control valve suitable for multiple gas paths according to claim 9, characterized in that, The position sensor is a Hall sensor, and the moving valve plate includes a second protrusion, in which a magnet is embedded; the Hall sensor is fixedly installed at any position on the circumference of the magnet when the moving valve plate rotates.

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