A transmission valve and transmission device

Abstract

This utility model belongs to the field of valve technology and discloses a transmission valve and transmission device. The transmission valve includes a sealing plate and a driving mechanism. The sealing plate can move along a preset path to have a working position that is in contact with the sealing surface and a standby position that is away from the sealing surface. The driving mechanism is drivenly connected to the sealing plate and is configured to drive the sealing plate to move along the preset path, so that the sealing plate switches between the working position and the standby position. The preset path includes a first path and a second path. The first path is the path in which the sealing plate moves along a first direction to approach or move away from the sealing surface, and the second path is the path in which the sealing plate moves along a second direction to contact or separate from the sealing surface. The first direction and the second direction are perpendicular to each other. In this utility model, when the sealing plate is in the working position, it not only approaches the sealing surface through the first direction, but also compresses the sealing plate with the sealing surface through the movement in the second direction, which significantly reduces the possibility of the sealing plate undergoing slight displacement, thereby improving the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a transmission valve and transmission device. Background Technology

[0002] In industrial gas transmission and chemical pipeline systems, transmission valves are key components that play a crucial role in sealing the connection between the pipeline and the atmosphere. During gas intake or exhaust, transmission valves need to precisely control the opening and closing of the sealing plate in a single direction to achieve reliable isolation or connection between the pipeline and the atmosphere.

[0003] However, when there is medium pressure inside the pipeline, if the medium (such as high-pressure gas or liquid) applies a reverse thrust to the sealing plate from the pipeline side, the reverse thrust on the sealing plate will exceed the preset thrust of the cylinder, causing the sealing plate to undergo a slight displacement and gaps to appear on the sealing surface, thereby affecting the sealing effect.

[0004] In addition, when there is a significant pressure difference between the inside and outside of the pipeline, such as the pressure difference between the high pressure inside the pipeline and the low pressure on the atmospheric side, or the external pressure pushing the sealing plate in a vacuum environment, it will also cause the sealing plate to undergo slight displacement, resulting in gaps on the sealing surface, thus affecting the sealing effect.

[0005] Therefore, the above problems urgently need to be solved. Utility Model Content

[0006] The purpose of this invention is to provide a transmission valve and transmission device to reduce the possibility of slight displacement of the sealing plate, avoid gap formation, and thus improve the sealing effect.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A transfer valve is capable of sealing with a sealing surface within a pipeline to seal the connection port between the pipeline and the atmosphere. The transfer valve includes:

[0009] The sealing plate is capable of moving along a preset path to have a working position that is in contact with the sealing surface and a standby position that is away from the sealing surface;

[0010] A drive mechanism, which is connected to the sealing plate, is configured to drive the sealing plate to move along the preset path, so that the sealing plate switches between the working position and the standby position.

[0011] The preset path includes a first path and a second path. The first path is the path in which the sealing plate moves along a first direction to approach or move away from the sealing surface, and the second path is the path in which the sealing plate moves along a second direction to fit or separate from the sealing surface.

[0012] The first direction and the second direction are perpendicular.

[0013] Preferably, the driving mechanism includes a first driving unit and a second driving unit, wherein:

[0014] The first driving unit is used to drive the sealing plate to move along the first direction;

[0015] The second driving unit is used to drive the sealing plate to move along the second direction.

[0016] Preferably, the first drive unit includes a first cylinder and a carrier, wherein the piston of the first cylinder moves along the first direction and the piston of the first cylinder is connected to the carrier.

[0017] The second drive unit includes a second cylinder, which is disposed on the support member. The piston of the second cylinder moves along the second direction and is connected to the sealing plate.

[0018] Preferably, the drive mechanism further includes a first air intake passage, an air source component, and a first air intake control component, wherein:

[0019] The cavity of the first cylinder is connected to the air source component through the first air intake passage to push the sealing plate closer to the sealing surface;

[0020] The cavity of the second cylinder is connected to the air source component through the first air intake passage to push the sealing plate to fit against the sealing surface;

[0021] The first intake control component is configured to control the flow direction of gas in the first intake air path, first introducing gas into the cavity of the first cylinder, and then introducing gas into the cavity of the second cylinder after the sealing plate is close to the sealing surface, so that the sealing plate fits against the sealing surface.

[0022] Preferably, the drive mechanism further includes a second air intake passage and a second air intake control element, wherein:

[0023] The cavity of the first cylinder is connected to the air source component through the second air intake passage to push the sealing plate away from the sealing surface;

[0024] The cavity of the second cylinder is connected to the air source component through the second air intake passage to push the sealing plate to separate the sealing surface;

[0025] The second intake control component is configured to control the flow direction of gas in the second intake air path, first introducing gas into the cavity of the second cylinder, and after the sealing plate separates the sealing surface, introducing gas into the cavity of the first cylinder, so that the sealing plate is away from the sealing surface.

[0026] Preferably, the second intake control component includes a spring switch disposed on the communication path between the second intake air passage and the first cylinder cavity. The spring switch is configured to open when the gas pressure provided by the air source component reaches a threshold, so that gas flows into the cavity of the first cylinder.

[0027] Preferably, the first drive unit further includes a main shaft, which is coaxially connected to the piston of the first cylinder and connected to the carrier through the main shaft.

[0028] Preferably, the first air intake passage is partially disposed within the main shaft.

[0029] Preferably, multiple first cylinders are provided, and the pistons of the multiple first cylinders are used to push the carrier to move to multiple positions respectively;

[0030] The second cylinder is provided in multiple ways, and the pistons of the multiple second cylinders are used to push the sealing plate to move in multiple positions respectively.

[0031] A transmission device includes a transmission pipeline and the aforementioned transmission valve, wherein the transmission valve is disposed at one end of the transmission pipeline that connects to the external atmosphere to control the connection or disconnection between the transmission pipeline and the external atmosphere.

[0032] The beneficial effects of this utility model are:

[0033] This invention, when the sealing plate is in the working position, not only approaches the sealing surface in the first direction, but also compresses it against the sealing surface through movement in the second direction. At this time, the reaction force exerted by the sealing surface on the sealing plate can be decomposed into components in the first and second directions. Even if the reverse thrust in the second direction attempts to displace the sealing plate, the constraint force in the second direction can counteract the effect of this thrust, significantly reducing the possibility of minute displacement of the sealing plate, preventing gaps, and thus improving the sealing effect. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the transmission valve provided by this utility model;

[0035] Figure 2 This is a cross-sectional view of the transmission valve provided by this utility model;

[0036] Figure 3 yes Figure 2 A cross-sectional view along the QQ line;

[0037] Figure 4 yes Figure 2 Cross-sectional view along the PP line;

[0038] Figure 5 This is a schematic diagram of the structure of the second cylinder and sealing plate provided by this utility model.

[0039] In the picture:

[0040] 1. Sealing plate;

[0041] 2. Drive mechanism; 21. First drive unit; 211. First cylinder; 212. Support component; 213. Main shaft; 22. Second drive unit; 221. Second cylinder;

[0042] 3. First air intake path;

[0043] 4. Second air intake path. Detailed Implementation

[0044] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0045] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0046] In this application, the term "and / or" describes a relationship between related objects, indicating that three relationships can exist. For example, a centrifugal vortex magnetic pump and / or a centrifugal vortex magnetic pump can represent: the existence of only one centrifugal vortex magnetic pump, the simultaneous existence of one centrifugal vortex magnetic pump and a centrifugal vortex magnetic pump, or the existence of only one centrifugal vortex magnetic pump. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0047] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0048] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0049] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0050] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0051] Please see Figures 1 to 5 This embodiment provides a transmission valve capable of sealing with a sealing surface within a pipeline to seal the connection port between the pipeline and the atmosphere. The transmission valve includes a sealing plate 1 and a drive mechanism 2. The sealing plate 1 can move along a preset path to have a working position that is in contact with the sealing surface and a standby position that is away from the sealing surface. The drive mechanism 2 is drively connected to the sealing plate 1 and configured to drive the sealing plate 1 to move along the preset path, thereby switching the sealing plate 1 between the working position and the standby position. The preset path includes a first path and a second path. The first path is the path along a first direction for the sealing plate 1 to move closer to or away from the sealing surface, and the second path is the path along a second direction for the sealing plate 1 to move in contact with or separate from the sealing surface. The first and second directions are perpendicular to each other.

[0052] When the sealing plate 1 switches from the standby position to the working position, the drive mechanism 2 first moves the sealing plate 1 along the first direction to be close to the sealing surface through the first path, and then slides it along the second direction through the second path to fit it tightly against the sealing surface by compression; conversely, when it needs to be opened, it first separates along the second direction and then moves away along the first direction.

[0053] Understandably, when the sealing plate 1 is in the working position, it not only comes into contact with the sealing surface in the first direction, but also compresses the sealing plate 1 against the sealing surface through movement in the second direction. At this time, the reaction force exerted by the sealing surface on the sealing plate 1 can be decomposed into components in the first and second directions. Even if the reverse thrust in the second direction attempts to push the sealing plate 1 to move, the constraint force in the second direction can counteract the influence of the thrust, significantly reducing the possibility of minute displacement of the sealing plate 1, avoiding gap formation, and thus improving the sealing effect.

[0054] For example, if the first direction is vertical and the second direction is horizontal, the horizontal compression of sealing plate 1 will cause the sealing surface to fit tightly against sealing plate 1. At this time, the horizontal pressure difference thrust is difficult to directly push sealing plate 1 away because the horizontal constraint force will restrict its displacement. When the high pressure in the pipeline pushes sealing plate 1, in the traditional solution, sealing plate 1 is prone to detaching from the sealing surface due to unidirectional force. However, in this embodiment, sealing plate 1 fits tightly against the sealing surface through horizontal compression, so that the pressure difference thrust needs to overcome not only the vertical thrust but also the horizontal thrust. The force in one direction is transformed into a bidirectional force, and the constraint in two directions enhances the thrust resistance of the sealing structure, thereby maintaining the tight fit of the sealing surface under pressure difference conditions and avoiding sealing failure caused by gaps.

[0055] It should be noted that the structure of the sealing surface is adapted to the movement path of the sealing plate 1 and can be designed according to the actual application scenario. In this embodiment, the sealing surface is set on the inner wall of the pipe to cooperate with the sealing plate 1. In other embodiments, the sealing surface can be set on the flange structure on the outside of the pipe or integrated into the wall of an independent sealing cavity. For example, it can be designed as a groove that fits into the edge boss of the sealing plate 1, a pressing surface that fits into the plane of the sealing plate 1, or a mating structure with a guide bevel, to adapt to the combined movement of the sealing plate 1 along the first and second directions and achieve reliable sealing in different scenarios.

[0056] Specifically, the drive mechanism 2 includes a first drive unit 21 and a second drive unit 22. The first drive unit 21 drives the sealing plate 1 to move along a first direction. The second drive unit 22 drives the sealing plate 1 to move along a second direction. With this configuration, the first drive unit 21 focuses on positioning the sealing plate 1 along the first direction, while the second drive unit 22 focuses on pressing in the second direction. The two can operate in a logical sequence of positioning followed by pressing, ensuring a more precise fit between the sealing plate 1 and the sealing surface and avoiding sealing deviations caused by the coupling of actions in traditional single-drive systems.

[0057] In this embodiment, the first drive unit 21 includes a first cylinder 211 and a support member 212. The piston of the first cylinder 211 moves along a first direction and is connected to the support member 212. The second drive unit 22 includes a second cylinder 221, which is disposed on the support member 212. The piston of the second cylinder 221 moves along a second direction and is connected to the sealing plate 1.

[0058] Understandably, the first cylinder 211 provides a vertical foundation for positioning the sealing plate 1 through the support member 212. The support member 212, acting as a rigid intermediate body, can evenly transmit the thrust along the first direction to the sealing plate 1, preventing tilting caused by single-point force. Furthermore, the second cylinder 221, integrated onto the support member 212, directly applies the thrust along the second direction to the sealing plate 1, effectively counteracting the reverse thrust of the pipeline medium on the sealing plate 1 along the first direction.

[0059] More importantly, the mounting component 212 integrates the installation of the first cylinder 211 and the second cylinder 221 into one unit, which simplifies the air pipeline layout and facilitates disassembly and maintenance. For example, when the second cylinder 221 leaks or its driving force decreases, the second cylinder 221 can be disassembled independently, significantly reducing maintenance costs.

[0060] Specifically, the drive mechanism 2 also includes a first intake air passage 3, an air source component, and a first intake control component. The cavity of the first cylinder 211 is connected to the air source component through the first intake air passage 3 to push the sealing plate 1 closer to the sealing surface. The cavity of the second cylinder 221 is connected to the air source component through the first intake air passage 3 to push the sealing plate 1 against the sealing surface. The first intake control component is configured to control the flow direction of the gas in the first intake air passage 3, first introducing gas into the cavity of the first cylinder 211, and then introducing gas into the cavity of the second cylinder 221 after the sealing plate 1 is close to the sealing surface, so that the sealing plate 1 is against the sealing surface.

[0061] As can be seen from the above, the first air intake control unit supplies air in the order of first cylinder 211 and then second cylinder 221, ensuring that the sealing plate 1 strictly follows the motion logic of first approaching the sealing surface and then squeezing and fitting together. This avoids the problem of motion interference caused by the first cylinder 211 and the second cylinder 221 being driven separately, significantly improving the reliability of the action, and especially avoiding the skewing or positioning deviation of the sealing plate 1 caused by simultaneous force.

[0062] In practical applications, the second cylinder 221 only connects to the air circuit to apply pressure after the sealing plate 1 approaches the sealing surface. At this time, the air supply pressure of the second cylinder 221 can be dynamically adjusted according to the pressure of the medium in the pipeline. For example, if the reverse thrust of the medium is large, the pressure of the second cylinder 221 can be increased to enhance the pressure, forming a sealing mechanism that compensates as needed.

[0063] Correspondingly, the drive mechanism 2 also includes a second air intake passage 4 and a second air intake control component. The cavity of the first cylinder 211 is connected to the air source component through the second air intake passage 4 to push the sealing plate 1 away from the sealing surface. The cavity of the second cylinder 221 is connected to the air source component through the second air intake passage 4 to push the sealing plate 1 away from the sealing surface. The second air intake control component is configured to control the flow direction of the gas in the second air intake passage 4, first introducing gas into the cavity of the second cylinder 221, and then introducing gas into the cavity of the first cylinder 211 after the sealing plate 1 separates from the sealing surface, so that the sealing plate 1 moves away from the sealing surface.

[0064] With this configuration, the extrusion pressure is first released by the second cylinder 221, so that the sealing plate 1 is released from the extrusion state with the sealing surface. Then, the first cylinder 211 drives the sealing plate 1 away, thereby avoiding the scratching and wear of the sealing surface caused by the forced movement of the sealing plate 1 before it is completely released from the extrusion. Especially under high pressure conditions, it can prevent the sealing surface from being scratched due to the coupling of residual extrusion pressure and vertical displacement, and significantly extend the service life of the sealing structure.

[0065] To reduce the failure rate of the transmission valve, the second intake control component includes a spring switch located on the communication path between the second intake air passage 4 and the cavity of the first cylinder 211. The spring switch is configured to open when the gas pressure supplied by the air source reaches a threshold, allowing gas to flow into the cavity of the first cylinder 211. When the air source pressure does not reach the threshold, the spring switch remains closed to prevent low-pressure gas from entering the first cylinder 211 and causing malfunction or insufficient positioning of the sealing plate 1. It automatically opens only when the pressure reaches the set value, ensuring that the sealing plate 1 receives sufficient driving force and achieving reliable control that starts as soon as the driving force is sufficient.

[0066] It should be noted that the air source components include an air compressor and an air tank. The air tank stores the compressed air discharged through the second air intake passage 4, while the air compressor provides the power air source. The first and second air intake control components can also be any component capable of achieving the above functions, such as a pneumatically controlled directional valve, a proportional control valve, or a combined directional valve assembly. For example, a two-position five-way solenoid valve, which internally contains a valve core, spring, and solenoid coil, controls the valve core displacement to switch the air path via an electrical signal. After the first air intake control component is energized, it first introduces the source air into the first cylinder 211 cavity through the first air intake passage 3, driving the sealing plate 1 vertically close to the sealing surface. Then, it switches the air path to introduce the air into the second cylinder 221 cavity for horizontal compression. The second air intake control component controls in the opposite direction, first releasing the horizontal compression force of the second cylinder 221, then driving the first cylinder 211 through the second air intake passage 4 to vertically move the sealing plate 1 away. Precise control of the airflow direction and action timing is achieved through the on / off logic of the solenoid valve.

[0067] It is worth noting that the cavity of the first cylinder 211 is divided into two chambers by a piston, and the first intake air passage 3 and the second intake air passage 4 are respectively connected to the two chambers. The connection method between the first intake air passage 3, the second intake air passage 4 and the second cylinder 221 can refer to the design of the first cylinder 211, so it will not be described in detail. In addition, the connection method between the first intake air passage 3, the second intake air passage 4 and the cavity of the second cylinder 221 is the same as the design method of the cavity of the first cylinder 211, and this embodiment will not be described in detail.

[0068] To further improve the reliability of the seal, the first drive unit 21 also includes a main shaft 213, which is coaxially connected to the piston of the first cylinder 211 and connected to the carrier 212 via the main shaft 213. As a rigid connecting member, the main shaft 213 transmits the thrust of the piston of the first cylinder 211 to the carrier 212 in a straight axial direction, avoiding the bending moment effect caused by traditional cantilever connections, ensuring the linear motion accuracy of the sealing plate 1 in the vertical direction, and effectively suppressing the risk of tilting of the sealing plate 1, especially under high pressure conditions.

[0069] Furthermore, the first intake air passage 3 is partially disposed within the main shaft 213. Specifically, an axial through hole is formed inside the main shaft 213, and the first intake air passage 3 communicates with the cavity of the first cylinder 211 through the central hole of the main shaft 213. This eliminates the external layout of the air passage pipeline, making the drive mechanism 2 more compact, especially suitable for space-constrained industrial piping systems. It also reduces the number of pipe connectors and lowers the risk of leakage. It should be noted that the specific design of the first intake air passage 3 and the second intake air passage 4 can be designed according to the actual application scenario, and this embodiment does not impose specific requirements or limitations on this.

[0070] Preferably, multiple first cylinders 211 are provided, and the pistons of the multiple first cylinders 211 are used to push the support member 212 to move to multiple positions respectively. Multiple second cylinders 221 are provided, and the pistons of the multiple second cylinders 221 are used to push the sealing plate 1 to move to multiple positions respectively. In this embodiment, two first cylinders 211 are provided, and the two first cylinders 211 push the two ends of the support member 212 respectively. Three second cylinders 221 are provided, of which two are used to push the two ends of the sealing plate 1, and the other is used to push the middle part of the sealing plate 1.

[0071] It is understandable that the pistons of multiple first cylinders 211 act on different positions of the bearing 212, and the pistons of multiple second cylinders 221 act on different positions of the sealing plate 1, which can avoid local stress concentration caused by single-point force. This is especially suitable for large-size sealing plate 1 scenarios, and can suppress deformation or tilting caused by off-center load, ensuring uniform contact of the sealing surface.

[0072] This embodiment also provides a transmission device, which includes a transmission pipeline and the aforementioned transmission valve. The transmission valve is located at the end of the transmission pipeline that connects to the external atmosphere to control the connection between the transmission pipeline and the external atmosphere. It is understood that the transmission device including the aforementioned transmission valve provides a better sealing effect.

[0073] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A transfer gate valve capable of sealing engagement with a seal face within a pipe to effect sealing of the pipe to an atmospheric side connection port, characterised in that, The transmission valve includes: The sealing plate (1) can move along a preset path to have a working position that fits the sealing surface and a standby position that is away from the sealing surface; The drive mechanism (2) is connected to the sealing plate (1) and is configured to drive the sealing plate (1) to move along the preset path so that the sealing plate (1) switches between the working position and the standby position; The preset path includes a first path and a second path. The first path is the path in which the sealing plate (1) moves along a first direction to approach or move away from the sealing surface. The second path is the path in which the sealing plate (1) moves along a second direction to fit or separate from the sealing surface. The first direction and the second direction are perpendicular.

2. A transmission gate valve according to claim 1, characterised in that The drive mechanism (2) includes a first drive unit (21) and a second drive unit (22), wherein: The first driving unit (21) is used to drive the sealing plate (1) to move along the first direction; The second drive unit (22) is used to drive the sealing plate (1) to move along the second direction.

3. A transmission gate valve according to claim 2, characterised in that, The first drive unit (21) includes a first cylinder (211) and a support member (212). The piston of the first cylinder (211) moves along the first direction, and the piston of the first cylinder (211) is connected to the support member (212). The second drive unit (22) includes a second cylinder (221), which is disposed on the support member (212). The piston of the second cylinder (221) moves along the second direction, and the piston of the second cylinder (221) is connected to the sealing plate (1).

4. A pass gate valve according to claim 3, wherein, The drive mechanism (2) further includes a first air intake passage (3), an air source component, and a first air intake control component, wherein: The cavity of the first cylinder (211) is connected to the air source component through the first air intake passage (3) to push the sealing plate (1) closer to the sealing surface; The cavity of the second cylinder (221) is connected to the air source component through the first air intake passage (3) to push the sealing plate (1) to fit against the sealing surface; The first intake control component is configured to control the flow direction of gas in the first intake air passage (3), first introducing gas into the cavity of the first cylinder (211), and after the sealing plate (1) approaches the sealing surface, introducing gas into the cavity of the second cylinder (221) so that the sealing plate (1) fits against the sealing surface.

5. A transmission gate valve according to claim 4, characterised in that The drive mechanism (2) further includes a second air intake passage (4) and a second air intake control component, wherein: The cavity of the first cylinder (211) is connected to the air source component through the second air intake passage (4) to push the sealing plate (1) away from the sealing surface; The cavity of the second cylinder (221) is connected to the air source component through the second air intake passage (4) to push the sealing plate (1) to separate the sealing surface; The second intake control is configured to control the flow direction of gas in the second intake air passage (4), first introducing gas into the cavity of the second cylinder (221), and after the sealing plate (1) separates the sealing surface, introducing gas into the cavity of the first cylinder (211) so that the sealing plate (1) is away from the sealing surface.

6. A transmission gate valve according to claim 5, wherein, The second intake control component includes a spring switch disposed on the communication path between the second intake air passage (4) and the cavity of the first cylinder (211). The spring switch is configured to open when the gas pressure provided by the air source component reaches a threshold, so that gas flows into the cavity of the first cylinder (211).

7. A transmission gate valve according to claim 5, wherein, The first drive unit (21) further includes a main shaft (213), which is coaxially connected to the piston of the first cylinder (211) and connected to the carrier (212) through the main shaft (213).

8. A transmission gate valve according to claim 7, characterised in that The first air intake passage (3) is partially disposed within the main shaft (213).

9. A transmission gate valve according to claim 3, wherein, The first cylinder (211) is provided in multiple ways, and the pistons of the multiple first cylinders (211) are used to push the carrier (212) to move to multiple positions respectively; The second cylinder (221) is provided in multiple ways, and the pistons of the multiple second cylinders (221) are used to push the sealing plate (1) to move in multiple positions respectively.

10. A transmitting device, characterized by The transmission device includes a transmission pipeline and a transmission valve as described in any one of claims 1-9, wherein the transmission valve is disposed at one end of the transmission pipeline that connects to the external atmospheric environment, so as to control the connection and disconnection between the transmission pipeline and the external atmospheric environment.

Images