Piezoelectric gas control device

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a piezoelectric gas control device, which comprises a valve body, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, the opening and closing mechanism is arranged in the valve body and corresponds to the cavity inlet, and the opening and closing mechanism comprises a driving assembly and a plug arranged on the driving assembly; according to the piezoelectric gas control device, the driving assembly is arranged to drive the plug to move to achieve on-off of the valve, and the driving assembly is of a structure which can deform when powered on, so that compared with an electromagnetic valve, the driving assembly is not affected by a magnetic field, and the piezoelectric gas control device has the advantages that the structure is simple, and the reliability is high. The device is suitable for an environment with a strong magnetic field.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a shut-off device with a closing element, and more particularly to a piezoelectric gas control device. Background Technology

[0002] Valves are installed to control the opening and closing of pipelines during the transportation of media.

[0003] In related technologies, solenoid valves are generally used to control the opening and closing of pipelines. Since solenoid valves are controlled by electromagnetic force, when the magnetic field strength of the operating environment is large, the control accuracy of the solenoid valve may be affected, or even fail.

[0004] Therefore, overcoming the reduced reliability of solenoid valves in strong magnetic field environments is a technical problem that urgently needs to be solved by those skilled in the art.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one piezoelectric gas control device.

[0007] In a first aspect, embodiments of this disclosure provide a piezoelectric gas control device, comprising: a valve body having a connecting pipe cavity therein, wherein at least one chamber inlet is provided on the side wall of the connecting pipe cavity; an opening and closing mechanism disposed within the valve body and corresponding to the chamber inlet, and comprising: a drive assembly and a plug disposed on the drive assembly; wherein the drive assembly is adapted to be energized to generate deformation thereby driving the plug to open and close the chamber inlet.

[0008] In one optional embodiment, the driving assembly includes: a piezoelectric ceramic and a conductive base; a limiting groove is provided in the valve body; the conductive base is disposed in the valve body and connected to one end of the piezoelectric ceramic, and the other end of the piezoelectric ceramic is inserted into the limiting groove of the valve body; a plug is disposed in the middle of the piezoelectric ceramic and blocks the inlet of the chamber; wherein, the piezoelectric ceramic is adapted to deform when energized, thereby driving the plug away from the inlet of the chamber.

[0009] In one optional embodiment, the drive assembly includes: a stacked ceramic and a spring; one end of the spring is inserted into a limiting groove in the valve body, and the other end abuts against the stacked ceramic; the plug is disposed in the middle of the spring and blocks the chamber inlet; wherein, the stacked ceramic is adapted to deform when energized to compress the spring and bend it, thereby driving the plug away from the chamber inlet.

[0010] In one optional embodiment, the drive assembly further includes: a first return spring, one end of which is connected to the valve body and the other end of which abuts against a spring plate; wherein the first return spring is adapted to push the spring plate to cause it to drive the plug to block the chamber inlet.

[0011] In one optional embodiment, the drive assembly includes: stacked ceramics and grippers; a pair of rotating shafts are provided in the middle of the grippers, and a pair of mounting positions are provided in the valve body; the grippers are adapted to be rotatably mounted in the valve body by cooperating with the rotating shafts and mounting positions; one end of the grippers is connected to the stacked ceramics, and the other end is provided with the plug, with a gap between the plug and the chamber inlet; wherein, the stacked ceramics are adapted to deform when energized to drive the grippers to rotate, thereby blocking the chamber inlet with the plug.

[0012] In one optional embodiment, the drive assembly further includes: a second return spring; the stacked ceramic is located below the gripper; the second return spring is located above the gripper and presses against the other end of the gripper to leave a gap between the plug and the chamber inlet; wherein the stacked ceramic is adapted to deform under electricity to compress the second return spring, thereby driving the plug to block the chamber inlet.

[0013] In one optional embodiment, the drive assembly includes: stacked ceramics and grippers; a pair of rotating shafts are provided in the middle of the grippers, and a pair of mounting positions are provided in the valve body; the grippers are adapted to be rotatably mounted in the valve body by cooperating with the rotating shafts and mounting positions; one end of the grippers is connected to the stacked ceramics, and the other end is provided with the plug, and the plug blocks the chamber inlet; wherein, the stacked ceramics are adapted to deform when energized to drive the grippers to rotate, thereby opening the chamber inlet by the plug.

[0014] In one alternative embodiment, the drive assembly further includes: a second reset spring; the stacked ceramic is located above the gripper; the second reset spring is located below the gripper and abuts against one end of the gripper, so that a plug at the other end of the gripper blocks the chamber inlet; wherein the stacked ceramic is adapted to deform when energized to drive the gripper to squeeze the second reset spring, thereby opening the chamber inlet with the plug.

[0015] In one optional embodiment, the bottom of the valve body is provided with a connector, the middle of the connector is provided with a valve body outlet, and at least one valve body inlet is provided around the valve body outlet.

[0016] In one optional embodiment, one end of the connecting pipe cavity is provided with a chamber outlet, which is connected to the valve body outlet.

[0017] The beneficial effects of this utility model are that the piezoelectric gas control device achieves valve opening and closing by setting a drive component to drive the plug to move. Moreover, the drive component adopts a structure that will deform when energized. Compared with solenoid valves, this drive component is not affected by magnetic fields and can be used in environments with strong magnetic fields.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a piezoelectric gas control device in a first application scenario provided by an embodiment of the present disclosure;

[0022] Figure 2 This is a schematic diagram of the structure of a connector provided in an embodiment of the present disclosure;

[0023] Figure 3 This is a schematic diagram of the structure of a piezoelectric gas control device in a second application scenario provided by an embodiment of the present disclosure;

[0024] Figure 4 This is a schematic diagram of the structure of a piezoelectric gas control device in a third application scenario provided by an embodiment of this disclosure;

[0025] Figure 5 A schematic diagram of the gripper installation structure in a third application scenario provided by an embodiment of this disclosure;

[0026] Figure 6 This is a schematic diagram of the structure of a piezoelectric gas control device in a fourth application scenario provided by an embodiment of this disclosure;

[0027] Figure 7 This is a schematic diagram of the gripper installation structure in a fourth application scenario provided by an embodiment of the present disclosure.

[0028] In the picture:

[0029] Valve body 1, pipe cavity 11, chamber inlet 111, chamber outlet 112, limiting groove 12, connector 13, valve body outlet 131, valve body inlet 132, mounting position 14;

[0030] 2. Opening and closing mechanism, 21. Drive assembly, 211. Piezoelectric ceramic, 212. Conductive base, 213. Stacked ceramic, 214. Spring, 215. Gripper, 216. Second return spring, 217. First return spring, 218. Rotating shaft, 212. Plug, 22. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the figures, the thickness of parts may be exaggerated or reduced for the purpose of effectively depicting the technical content.

[0033] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] like Figure 1 As shown, at least one embodiment provides a piezoelectric gas control device, including: a valve body 1, which has a connecting chamber 11 therein, and the side wall of the connecting chamber 11 has at least one chamber inlet 111; an opening and closing mechanism 2, which is disposed in the valve body 1 and corresponds to the chamber inlet 111, and includes: a drive assembly 21 and a plug 22 disposed on the drive assembly 21; wherein, the drive assembly 21 is adapted to be energized to generate deformation, thereby driving the plug 22 to open and close the chamber inlet 111.

[0035] In this embodiment, the plug 22 is moved by the drive component 21, thereby controlling the opening and closing of the chamber inlet 111. The drive component 21 has a structure that deforms when energized. Compared with a solenoid valve, the drive component 21 is not affected by a magnetic field and can be used in environments with strong magnetic fields.

[0036] like Figure 2As shown, in some embodiments, a connector 13 is provided at the bottom of the valve body 1, a valve body outlet 131 is provided in the middle of the connector 13, and at least one valve body inlet 132 is provided around the valve body outlet 131; a chamber outlet 112 is provided at one end of the pipe cavity 11, and the chamber outlet 112 is connected to the valve body outlet 131.

[0037] In this embodiment, the medium enters the valve body 1 from the valve body inlet 132 of the connector 13, then enters the pipe chamber 11 through the open chamber inlet 111, and finally flows out from the valve body outlet 131 connected to the chamber outlet 112, thereby realizing the flow of the medium.

[0038] In the first application scenario, such as Figure 1 As shown, the driving component 21 includes a piezoelectric ceramic 211 and a conductive base 212.

[0039] Specifically, the valve body 1 is provided with a limiting groove 12 and a conductive base 212. The conductive base 212 is connected to one end of the piezoelectric ceramic 211, and the other end of the piezoelectric ceramic 211 is inserted into the limiting groove 12 of the valve body 1. The plug 22 is located in the middle of the piezoelectric ceramic 211 and blocks the chamber inlet 111. The piezoelectric ceramic 211 is adapted to deform when energized, thereby driving the plug 22 away from the chamber inlet 111.

[0040] In this embodiment, the conductive base 212 is connected to an electric wire to energize the piezoelectric ceramic 211. When the piezoelectric ceramic 211 is energized, it will bend and deform. Since the end of the piezoelectric ceramic 211 located in the limiting groove 12 is not fixed, the piezoelectric ceramic 211 will move the plug 22 away from the chamber inlet 111 during the bending and deformation process, thereby opening the connecting chamber 11 to allow the medium to flow. When the piezoelectric ceramic 211 is de-energized, it will restore its deformation, thereby moving the plug 22 toward the chamber inlet 111 to block the chamber inlet 111.

[0041] In the second application scenario, such as Figure 3 As shown, the drive assembly 21 includes: stacked ceramic 213 and spring sheet 214.

[0042] Specifically, one end of the spring piece 214 is inserted into the limiting groove 12 of the valve body 1, and the other end abuts against the stacked ceramic 213; the plug 22 is located in the middle of the spring piece 214 and blocks the chamber inlet 111; wherein, the stacked ceramic 213 is adapted to be energized to generate deformation to compress the spring piece 214 to bend it, thereby driving the plug 22 away from the chamber inlet 111.

[0043] In this embodiment, one end of the spring piece 214 is disposed in the limiting groove 12. When the stacked ceramic 213 is energized, the stacked ceramic 213 will deform to generate a unidirectional thrust. The generated unidirectional thrust squeezes the spring piece 214 to deform it, thereby driving the plug 22 to move to open the chamber inlet 111.

[0044] In this embodiment, the drive assembly 21 further includes a first return spring 217, one end of which is connected to the valve body 1 and the other end abuts against the spring plate 214; wherein the first return spring 217 is adapted to push the spring plate 214 to drive the plug 22 to block the chamber inlet 111.

[0045] In this embodiment, when the stacked ceramic 213 stops being powered, the stacked ceramic 213 releases the pressure on the spring piece 214. Subsequently, the spring piece 214 moves toward the chamber inlet 111 due to the presence of the first return spring 217, thereby causing the plug 22 to block the chamber inlet 111.

[0046] In this embodiment, the end of the spring piece 214 located in the limiting groove 12 abuts against the bottom of the limiting groove 12.

[0047] In this embodiment, a recess may be provided on the side of the stacked ceramic 213 facing the spring piece 214, so that the end of the spring piece 214 is placed in the recess, thereby preventing the end of the spring piece 214 from shifting; at the same time, when the stacked ceramic 213 is not powered, that is, when the plug 22 blocks the chamber inlet 111, the spring piece 214 may bend to a certain extent toward the side away from the chamber inlet 111, so as to guide the bending direction of the spring piece 214 when the stacked ceramic 213 applies force.

[0048] In the third application scenario, such as Figure 4 As shown, the drive assembly 21 includes: stacked ceramics 213 and grippers 215.

[0049] Specifically, a pair of rotating shafts 218 are provided in the middle of the gripper 215, and a pair of mounting positions 14 are provided inside the valve body 1. The gripper 215 is rotatably mounted inside the valve body 1 through the cooperation of the rotating shafts 218 and the mounting positions 14 (e.g., Figure 5 As shown); one end of the gripper 215 is connected to the stacked ceramic 213, and the other end is provided with a plug 22, with a gap between the plug 22 and the chamber inlet 111; wherein, the stacked ceramic 213 is adapted to deform when energized to drive the gripper 215 to rotate, thereby blocking the chamber inlet 111 with the plug 22.

[0050] In this embodiment, when the stacked ceramic 213 is not energized, there is a gap between the plug 22 on the gripper 215 and the chamber inlet 111, and the pipeline is in a closed state. When the stacked ceramic 213 is energized, the stacked ceramic 213 will deform to generate a unidirectional thrust, that is, push the gripper 215 upward, so that the gripper 215 rotates around the rotating shaft 218, thereby driving the plug 22 to block the chamber inlet 111.

[0051] In this embodiment, the drive assembly 21 further includes: a second reset spring 216; a stacked ceramic 213 located below the gripper 215; the second reset spring 216 located above the gripper 215 and pressing down on the other end of the gripper 215, so that a gap is left between the plug 22 and the chamber inlet 111; wherein, the stacked ceramic 213 is adapted to deform under electricity so that the gripper 215 compresses the second reset spring 216, thereby driving the plug 22 to block the chamber inlet 111.

[0052] In this embodiment, when no power is applied, the second return spring 216 abuts against the end of the gripper 215, leaving a gap between the plug 22 at the other end of the gripper 215 and the chamber inlet 111.

[0053] In the fourth application scenario, such as Figure 6 As shown, the drive assembly 21 includes: stacked ceramics 213 and grippers 215.

[0054] Specifically, a pair of rotating shafts 218 are provided in the middle of the gripper 215, and a pair of mounting positions 14 are provided inside the valve body 1. The gripper 215 is rotatably mounted inside the valve body 1 through the cooperation of the rotating shafts 218 and the mounting positions 14 (e.g., Figure 7 As shown); one end of the gripper 215 is connected to the stacked ceramic 213, and the other end is provided with a plug 22, which blocks the chamber inlet 111; wherein, the stacked ceramic 213 is adapted to be energized to generate deformation to drive the gripper 215 to rotate, thereby opening the chamber inlet 111 by the plug 22.

[0055] In this embodiment, when the stacked ceramic 213 is not energized, the plug 22 abuts against the chamber inlet 111 to close the valve; when the stacked ceramic 213 is energized, the stacked ceramic 213 will deform to generate a unidirectional thrust, that is, push the gripper 215 downward, causing the gripper 215 to rotate around the rotating shaft 218, thereby causing the plug 22 at the end of the gripper 215 to move away from the chamber inlet 111 to open the valve.

[0056] In this embodiment, the drive assembly 21 further includes: a second reset spring 216; a stacked ceramic 213 located above the gripper 215; the second reset spring 216 located below the gripper 215 and abutting against one end of the gripper 215, so that the plug 22 at the other end of the gripper 215 blocks the chamber inlet 111; wherein, the stacked ceramic 213 is adapted to deform when energized to drive the gripper 215 to squeeze the second reset spring 216, thereby causing the plug 22 to open the chamber inlet 111.

[0057] In this embodiment, when the stacked ceramic 213 is not energized, the second reset spring 216 pushes the end of the gripper 215 to abut against the stacked ceramic 213, thereby blocking the chamber inlet 111 at the other end of the gripper 215.

[0058] In summary, this piezoelectric gas control device achieves valve opening and closing by moving the plug 22 through the drive component 21. The drive component 21 has a structure that deforms when energized. Compared with a solenoid valve, this drive component 21 is not affected by magnetic fields and can be used in environments with strong magnetic fields.

[0059] In this document, when it is said that the first component is located on the second component, this can mean that the first component can be directly formed on the second component, or that the third component can be inserted between the first component and the second component.

[0060] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0061] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0062] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0063] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0064] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0065] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0066] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0067] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0068] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A piezoelectric gas control device, characterized in that, include: The valve body (1) has a connecting pipe cavity (11) inside, and the side wall of the connecting pipe cavity (11) has at least one chamber inlet (111). The opening and closing mechanism (2) is disposed in the valve body (1) and corresponds to the chamber inlet (111), and includes: a drive assembly (21) and a plug (22) disposed on the drive assembly (21). The drive component (21) is adapted to be energized to generate deformation, thereby driving the plug (22) to open and close the chamber inlet (111).

2. The piezoelectric gas control device as described in claim 1, characterized in that, The driving component (21) includes: piezoelectric ceramic (211) and conductive base (212); A limit groove (12) is provided inside the valve body (1); The conductive base (212) is disposed inside the valve body (1) and connected to one end of the piezoelectric ceramic (211), and the other end of the piezoelectric ceramic (211) is inserted into the limiting groove (12) of the valve body (1); The plug (22) is located in the middle of the piezoelectric ceramic (211) and blocks the chamber inlet (111). The piezoelectric ceramic (211) is adapted to deform when energized, thereby driving the plug (22) away from the chamber inlet (111).

3. The piezoelectric gas control device as described in claim 1, characterized in that, The drive assembly (21) includes: stacked ceramic (213) and spring (214). One end of the spring piece (214) is inserted into the limiting groove (12) of the valve body (1), and the other end abuts against the stacked ceramic (213); The plug (22) is located in the middle of the spring piece (214) and blocks the chamber inlet (111). The stacked ceramic (213) is adapted to be energized to deform and compress the spring sheet (214) to bend it, thereby driving the plug (22) away from the chamber inlet (111).

4. The piezoelectric gas control device as described in claim 3, characterized in that, The drive assembly (21) further includes: a first return spring (217), one end of which is connected to the valve body (1), and the other end abuts against the spring plate (214); wherein The first return spring (217) is adapted to push the spring piece (214) to drive the plug (22) to block the chamber inlet (111).

5. The piezoelectric gas control device as described in claim 1, characterized in that, The drive assembly (21) includes: stacked ceramic (213) and gripper (215); A pair of rotating shafts (218) are provided in the middle of the gripper (215), and a pair of mounting positions (14) are provided in the valve body (1). The gripper (215) is adapted to be rotatably mounted in the valve body (1) by cooperating with the mounting positions (14) through the rotating shafts (218). One end of the gripper (215) is connected to the stacked ceramic (213), and the other end is provided with the plug (22), and there is a gap between the plug (22) and the chamber inlet (111); The stacked ceramic (213) is adapted to deform when energized to drive the gripper (215) to rotate, thereby blocking the chamber inlet (111) with the plug (22).

6. The piezoelectric gas control device as described in claim 5, characterized in that, The drive assembly (21) further includes: a second return spring (216); The stacked ceramic (213) is located below the gripper (215); The second reset spring (216) is located above the gripper (215) and presses against the other end of the gripper (215) so that there is a gap between the plug (22) and the chamber inlet (111); The stacked ceramic (213) is adapted to be energized and deformed so that the gripper (215) compresses the second return spring (216), thereby driving the plug (22) to block the chamber inlet (111).

7. The piezoelectric gas control device as described in claim 1, characterized in that, The drive assembly (21) includes: stacked ceramic (213) and gripper (215); A pair of rotating shafts (218) are provided in the middle of the gripper (215), and a pair of mounting positions (14) are provided in the valve body (1). The gripper (215) is adapted to be rotatably mounted in the valve body (1) by cooperating with the mounting positions (14) through the rotating shafts (218). One end of the gripper (215) is connected to the stacked ceramic (213), and the other end is provided with the plug (22), and the plug (22) blocks the chamber inlet (111). The stacked ceramic (213) is adapted to be energized to generate deformation to drive the gripper (215) to rotate, thereby causing the plug (22) to open the chamber inlet (111).

8. The piezoelectric gas control device as described in claim 7, characterized in that, The drive assembly (21) further includes: a second return spring (216); The stacked ceramic (213) is located above the gripper (215); The second return spring (216) is located below the jaw (215) and abuts against one end of the jaw (215) so that the plug (22) at the other end of the jaw (215) blocks the chamber inlet (111). The stacked ceramic (213) is adapted to be energized to deform and drive the gripper (215) to squeeze the second reset spring (216), thereby causing the plug (22) to open the chamber inlet (111).

9. The piezoelectric gas control device as described in claim 1, characterized in that, The valve body (1) has a connector (13) at its bottom, a valve body outlet (131) is provided in the middle of the connector (13), and at least one valve body inlet (132) is provided around the valve body outlet (131).

10. The piezoelectric gas control device as described in claim 1, characterized in that, One end of the connecting pipe cavity (11) is provided with a chamber outlet (112), which is connected to the valve body outlet (131).

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