Gate valve device

Abstract

The utility model discloses a gate valve device, and relates to the field of process equipment. The gate valve device comprises a base body, a valve body assembly and a driving assembly. The valve body assembly comprises a seat body, a connecting piece, a plugging piece and an elastic mechanism. A mounting hole is formed in the seat body, the connecting piece is inserted into the mounting hole, a gap exists between the connecting piece and the inner wall of the mounting hole, and the connecting piece is connected with the plugging piece. The driving assembly is used for driving the valve body assembly to turn over relative to the base body in the first direction so that the blocking piece can abut against the base body and block the first channel. The driving assembly is further used for driving the valve body assembly to turn over relative to the base body in the second direction so that the blocking piece can open the first channel. By arranging the elastic mechanism, the plugging piece can reliably abut against the base body, and the sealing effect of the gate valve device is improved.

Description

Technical Field

[0001] This application relates to the field of process equipment, and more specifically, to a valve device. Background Technology

[0002] Some equipment has chambers for implementing different processes, where workpieces are processed and transported between chambers. During the process, the chambers often need to be sealed and isolated, so valve devices are used to achieve communication and isolation between chambers. When the valve device is open, the chambers are connected through channels, and the workpiece can be transported between the chambers; when the valve device is closed, the chambers are isolated, and gas exchange does not occur between them. In related technologies, the valve device blocks or opens channels on the substrate by driving a sealing element to flip. When the sealing element blocks the channel, the end closer to the rotation axis often abuts against the substrate first with a greater abutting force; while the end farther from the rotation axis often abuts against the substrate later with a smaller abutting force, resulting in a poorer sealing effect on that side. Moreover, the end that abuts against the substrate first will generate lateral friction with the substrate during subsequent extrusion, which can easily cause the sealing ring on the sealing element near the rotation axis to roll over due to friction, leading to the sealing ring falling off and affecting the sealing effect. Utility Model Content

[0003] The purpose of this application is to provide a valve device with better sealing performance.

[0004] In a first aspect, this application provides a valve device, including a base, a valve body assembly, and a drive assembly. The base has a first channel. The drive assembly is drivenly connected to the valve body assembly. The valve body assembly includes a seat, a connector, a plugging member, and an elastic mechanism. The seat has a mounting hole. The connector is inserted into the mounting hole, and there is a gap between the connector and the inner wall of the mounting hole. The connector is connected to the plugging member. The drive assembly is used to drive the valve body assembly to rotate relative to the base in a first direction, so that the plugging member presses against the base and blocks one end of the first channel. The drive assembly is also used to drive the valve body assembly to rotate relative to the base in a second direction, so that the plugging member opens the first channel. The elastic mechanism is used to make the plugging member tend to move away from the seat in the first direction.

[0005] In an optional embodiment, the plugging member has a first end close to the rotation axis of the valve body assembly and a second end away from the rotation axis of the valve body assembly, and a connector is connected between the first end and the second end of the plugging member.

[0006] In an optional implementation, the number of connectors is one;

[0007] Alternatively, there may be two or more connectors, all of which are arranged in a row in a preset direction, which is parallel to the rotation axis of the valve body assembly.

[0008] In an optional embodiment, the elastic mechanism includes a first elastic structure that abuts against a second end of the sealing member to give the second end of the sealing member a tendency to move away from the seat in a first direction.

[0009] In an optional embodiment, the seat body is provided with an assembly hole, and the first elastic structure includes a pusher and an elastic member. The pusher is inserted into the assembly hole, one end of the pusher abuts against the second end of the sealing member, and the other end of the pusher is provided with a first limiting part. The elastic member connects the seat body and the pusher. The elastic member is used to provide a force to the pusher to move towards the sealing member, and the first limiting part is used to abut against the seat body to prevent the pusher from being pulled out of the assembly hole.

[0010] In an optional embodiment, the mounting hole is a stepped hole with a first abutting surface facing the sealing member, the pushing member has a second abutting surface facing the first abutting surface, and the elastic member is a compression spring with its two ends abutting against the first abutting surface and the second abutting surface, respectively.

[0011] In an optional embodiment, the elastic mechanism further includes a second elastic structure. The connecting member includes a connecting shaft and a second limiting part. The connecting shaft is inserted into the mounting hole, and the diameter of the connecting shaft is smaller than the diameter of the mounting hole. One end of the connecting shaft is connected to the sealing member, and the other end of the connecting shaft is connected to the second limiting part. The second elastic structure is sleeved on the connecting shaft. The second elastic structure is used to make the sealing member tend to move away from the seat in a first direction. The second limiting part is used to abut against the seat to prevent the connecting shaft from being pulled out of the mounting hole.

[0012] In an optional implementation, the second elastic structure includes a disc spring.

[0013] In an optional embodiment, the substrate forms a receiving cavity, the valve body assembly is disposed in the receiving cavity, the substrate includes a first plate and a second plate spaced apart, the receiving cavity is formed between the first plate and the second plate, a first channel is formed on the first plate, and a second channel opposite to the first channel is opened on the second plate.

[0014] In an optional embodiment, the drive assembly includes a drive member and a drive shaft. The drive shaft is rotatably connected to the base, and the base is connected to the outer peripheral surface of the drive shaft. The drive member is drively connected to the drive shaft and is used to drive the drive shaft to rotate.

[0015] In an optional implementation, the drive assembly includes two drive members, which are respectively connected to both ends of the drive shaft.

[0016] In an optional embodiment, a sealing ring is provided on the side of the sealing member away from the seat body. The sealing ring is used to abut against the base body when the sealing member blocks the first channel.

[0017] The beneficial effects of the valve device provided in this application embodiment include:

[0018] The valve device provided in this application includes a base, a valve body assembly, and a drive assembly. The valve body assembly includes a seat, a connector, a plugging member, and an elastic mechanism. The seat has a mounting hole, and the connector is inserted into the mounting hole. There is a gap between the connector and the inner wall of the mounting hole, and the connector is connected to the plugging member. The drive assembly is used to drive the valve body assembly to rotate relative to the base in a first direction, so that the plugging member presses against the base and blocks the first channel. The drive assembly is also used to drive the valve body assembly to rotate relative to the base in a second direction, so that the plugging member opens the first channel. By providing the elastic mechanism, the plugging member tends to move away from the seat in the first direction. Because there is a gap between the connector and the mounting hole, the plugging member has a certain amount of movement relative to the seat. Therefore, when the plugging member contacts the base in the first direction, the plugging member can adjust its posture relative to the base according to its own force, and will not cause the other end to be unreliably pressed against the base due to a large compressive force at one end. Therefore, ultimately, both the first and second ends of the plugging member can reliably abut against the base. Moreover, during the process from the sealing component contacting the substrate to completely sealing the first channel, the sealing component and the substrate are not prone to generating large lateral friction forces, which makes it less likely for the sealing ring on the sealing component to fall off, thus ensuring the reliability of the seal. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the operation of a valve device in related technologies;

[0021] Figure 2 This is a schematic diagram of a valve device in one embodiment of this application;

[0022] Figure 3 This is a cross-sectional view of a valve device in one embodiment of this application;

[0023] Figure 4 This is a first cross-sectional view of a valve body assembly in one embodiment of this application;

[0024] Figure 5This is a second cross-sectional view of a valve body assembly in one embodiment of this application;

[0025] Figures 6 to 8 This is a schematic diagram showing the valve body assembly in different positions in the embodiments of this application.

[0026] Icons: 100-Base; 101-Receiving cavity; 110-First plate; 111-First channel; 120-Second plate; 121-Second channel; 130-Third plate; 140-Fourth plate; 200-Valve body assembly; 210-Seat; 211-Mounting hole; 212-Assembly hole; 213-First groove; 214-Second groove; 215-First abutment surface; 220-Sealing element; 220a-First end ; 220b - Second end; 221 - Slot; 222 - Sealing ring; 230 - Connector; 231 - Connecting shaft; 232 - Second limiting part; 240 - First elastic structure; 241 - Pushing member; 242 - First limiting part; 243 - Elastic member; 244 - Second abutting surface; 250 - Second elastic structure; 300 - Drive assembly; 310 - Drive member; 320 - Drive shaft; 330 - Transmission member; 400 - Support. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" 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 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 application based on the specific circumstances.

[0030] In existing technologies, valve devices are used to connect and disconnect the two chambers of a device. Taking a coating equipment as an example, valve devices are installed between the chambers, and these valve devices play a crucial role in sealing the process. Because the workpiece to be processed needs to move back and forth between the chambers, it must pass through the valve devices during this movement. The valve devices must then open and close, and their sealing performance directly affects the process results and production capacity. Figure 1 This is a schematic diagram of the operation of a valve device in related technologies. Figure 1 As shown, when the sealing member 220 is driven to flip and approach the channel on the base 100, the side closer to the axis of rotation ( Figure 1 The upper side of the sealing element 220 (often the same component) first abuts against the base 100, resulting in a high compressive force and good sealing effect on the upper side, while the lower side experiences a low compressive force and poor sealing effect. Furthermore, after the sealing ring 222 on the upper side of the sealing element 220 contacts the base 100, further tightening by rotating the sealing element 220 will cause lateral friction between the sealing ring 222 and the base 100. For example... Figure 1 In the process, the substrate 100 exerts a downward frictional force on the sealing ring 222, which can easily cause the sealing ring 222 to roll over and fall off from the sealing component 220 under the action of lateral friction, thus seriously affecting the sealing effect.

[0031] Therefore, this application provides a valve device that improves the sealing performance of the valve device by setting a movable sealing element and an elastic structure to improve the sealing effect of one end of the sealing element.

[0032] Figure 2 This is a schematic diagram of a valve device in one embodiment of this application; Figure 3 This is a cross-sectional view of a valve device in one embodiment of this application. Figure 2 and Figure 3As shown, the valve device provided in this embodiment includes a base 100, a valve body assembly 200, and a drive assembly 300. The base 100 forms a receiving cavity 101, and the valve body assembly 200 is disposed within the receiving cavity 101. A first channel 111 and a second channel 121 are formed on the base 100, both of which communicate with the receiving cavity 101 and the outside of the base 100. The drive assembly 300 can drive the valve body assembly 200 to rotate relative to the base 100 to block or open one end of the first channel 111. In this embodiment, both the first channel 111 and the second channel 121 have an inner end near the receiving cavity 101 and an outer end away from the receiving cavity 101, and the valve body assembly 200 can block or open the inner end of the first channel 111. The outer ends of the first channel 111 and the second channel 121 are used to connect two different chambers. When the valve assembly 200 opens the first channel 111, the workpiece can pass through the first channel 111, the receiving cavity 101, and the second channel 121 through the base 100, thereby enabling the workpiece to be transported from one chamber to another. When the valve assembly 200 blocks the inner end of the first channel 111, the workpiece cannot pass through the valve device. The aforementioned workpiece can be a semiconductor device, or other types of products or materials, such as a base, a stage, etc. It should be understood that in alternative embodiments, the base 100 may not have the second channel 121, that is, only the first channel 111 is provided, and the receiving cavity 101 is not provided; in this case, the workpiece is transported from one end of the first channel 111 to the other end, thereby passing through the base 100.

[0033] In this embodiment, the substrate 100 includes a first plate 110 and a second plate 120 spaced apart. A receiving cavity 101 is formed between the first plate 110 and the second plate 120. A first channel 111 is formed on the first plate 110, and a second channel 121 is formed on the second plate 120 and opposite to the first channel 111. Further, the substrate 100 also includes a third plate 130, a fourth plate 140, a first end plate, and a second end plate. The third plate 130 and the fourth plate 140 are spaced apart, and the first end plate and the second end plate are spaced apart. The first plate 110, the second plate 120, the third plate 130, the fourth plate 140, the first end plate, and the second end plate together form a rectangular receiving cavity 101.

[0034] In this embodiment, the drive assembly 300 includes a drive member 310 and a drive shaft 320, with the drive shaft 320 rotatably connected to the base 100. The valve body assembly 200 is connected to the outer peripheral surface of the drive shaft 320 and is used to drive the drive shaft 320 to rotate. Optionally, a portion of the drive shaft 320 is located within the receiving cavity 101 of the base 100, and at least one end of the drive shaft 320 is located outside the receiving cavity 101. The drive member 310 is drively connected to the portion of the drive shaft 320 located outside the receiving cavity 101. By placing the valve body assembly 200 within the receiving cavity 101 of the base 100, the base 100 can protect the valve body assembly 200. Since the drive member 310 is located outside the receiving cavity 101 of the base 100, it is not limited by the volume of the receiving cavity 101, thus allowing for a wider range of sizes and types of drive member 310. The drive shaft 320 is driven to rotate by the drive component 310. The drive shaft 320 can drive the valve body assembly 200 to rotate in the receiving cavity 101, thereby achieving the blocking and opening of the inner end of the first channel 111.

[0035] In this embodiment, the drive assembly 300 includes two drive members 310, which are respectively connected to both ends of the drive shaft 320. Specifically, the drive shaft 320 is rotatably connected to the first end plate and the second end plate, and both ends of the drive shaft 320 extend out of the receiving cavity 101. Optionally, the drive member 310 is a cylinder, a hydraulic cylinder, or a linear motor. In this embodiment, the valve device also includes a support 400, and the drive assembly 300 and the base 100 are both disposed on the support 400. In this embodiment, the drive member 310 is a linear drive, and the drive assembly 300 also includes a transmission member 330. The drive member 310 is hinged to the support 400, the output end of the drive member 310 is hinged to the transmission member 330, and the transmission member 330 is fixedly connected to the end of the drive shaft 320. When the output end of the drive member 310 performs a telescopic movement, it can drive the transmission member 330 and the drive shaft 320 to rotate, thereby causing the valve body assembly 200 to flip. It should be understood that, in alternative embodiments, the drive element 310 may also be a motor that provides torque.

[0036] Figure 4 This is a first cross-sectional view of the valve body assembly 200 in one embodiment of this application; Figure 5 This is a second cross-sectional view of the valve body assembly 200 in one embodiment of this application; Figures 6 to 8 This is a schematic diagram showing the valve body assembly 200 in different positions in an embodiment of this application. Figures 4 to 8As shown, the valve body assembly 200 includes a seat 210, a connector 230, a sealing member 220, and an elastic mechanism. The seat 210 has a mounting hole 211, the connector 230 is inserted into the mounting hole 211, and there is a gap between the connector 230 and the inner wall of the mounting hole 211. The connector 230 is connected to the sealing member 220. In this embodiment, the drive assembly 300 is used to drive the valve body assembly 200 to rotate relative to the base 100 in a first direction, so that the sealing member 220 presses against the base 100 and seals one end (specifically, the inner end) of the first channel 111. The drive assembly 300 is also used to drive the valve body assembly 200 to rotate relative to the base 100 in a second direction, so that the sealing member 220 opens the first channel 111. The elastic mechanism is used to give the sealing member 220 a tendency to move away from the seat 210 in the first direction. In this embodiment, the first direction and the second direction are two opposite rotational directions. Figures 6 to 8 In the diagram, the first direction is counterclockwise, as shown by arrow W1; the second direction is clockwise, as shown by arrow W2.

[0037] In this embodiment, a sealing ring 222 is provided on the sealing member 220. The sealing ring 222 is used to abut against the inner surface of the base 100 to improve the sealing effect. The sealing ring 222 can be a sealing ring, and when the sealing ring 222 abuts against the base 100, the sealing ring 222 can surround the inner end opening of the first channel 111. A groove 221 is provided on the side of the sealing member 220 away from the seat 210. The sealing ring 222 is installed in the groove 221, and a part of the sealing ring 222 protrudes from the groove 221 to abut against the base 100 (specifically the first plate 110). Optionally, the groove 221 is a dovetail groove, thereby ensuring the stability of the sealing ring 222.

[0038] By creating a gap between the connector 230 and the inner wall of the mounting hole 211, the connector 230 can not only move axially along the mounting hole 211, but also deflect to a certain extent relative to the axis of the mounting hole 211. This allows the sealing member 220 to move closer to or further away from the seat 210, and also to deflect relative to the seat 210. The flexible sealing member 220 allows it to adjust its posture according to the force applied when compressing the base 100, ensuring uniform force distribution between the sealing member 220 and the base 100, avoiding problems of excessive pressure in some areas and insufficient pressure in others, resulting in inadequate sealing. Furthermore, because the sealing member 220 experiences uniform force when compressing the base 100, the sealing ring 222 on the sealing member 220 is less susceptible to lateral friction, thus preventing it from falling off. In this application, the elastic mechanism can maintain a certain pressure when the sealing member 220 seals the first channel 111, thereby ensuring the sealing effect.

[0039] In this embodiment, the sealing member 220 has a first end 220a near the rotation axis of the valve body assembly 200 and a second end 220b away from the rotation axis of the valve body assembly 200. A connecting member 230 connects the first end 220a and the second end 220b of the sealing member 220. The elastic mechanism includes a first elastic structure 240, which abuts against the second end 220b of the sealing member 220 to give the second end 220b a tendency to move away from the seat 210 along a first direction. Because the first elastic structure 240 abuts against the second end 220b of the sealing member 220, when the sealing member 220 is not in contact with the base 100, the first elastic structure 240 will cause the second end 220b of the sealing member 220 to tilt forward. This can improve the problem that when the first end 220a of the sealing member 220 contacts the base 100 first, the angle of inclination of the sealing member 220 relative to the base 100 is large (e.g., ...). Figure 1 As shown in the figure, this improves or even eliminates the problem of insufficient adhesion between the sealing element 220 and the substrate 100. In this embodiment, when the sealing element 220 contacts the substrate 100 along the first direction, the angle between the sealing element 220 and the substrate 100 is smaller, and during the subsequent extrusion process, the first elastic structure 240 undergoes elastic deformation, allowing the sealing element 220 to adjust its posture relative to the substrate 100 according to the force it receives. Ultimately, both the first end 220a and the second end 220b can reliably abut against the substrate 100. Since the end of the sealing element 220 away from the axis is often the end with weaker extrusion force, this embodiment strengthens the extrusion force between the second end 220b of the sealing element 220 and the substrate 100 by setting the first elastic structure 240, thereby improving the sealing effect.

[0040] Optionally, the number of connectors 230 is one; or, the number of connectors 230 is two or more, all of which are arranged in a row in a preset direction parallel to the rotation axis of the valve body assembly 200. In this embodiment, the valve body assembly 200 includes multiple connectors 230, which are arranged in a row along a preset direction, such as... Figure 2 As shown. Furthermore, the connector 230 is positioned between the first end 220a and the second end 220b of the sealing member 220, meaning that the distance between the sealing member 220 and the first end 220a and the second end 220b is approximately equal.

[0041] In this embodiment, the seat 210 has an assembly hole 212. The first elastic structure 240 includes a pusher 241 and an elastic member 243. The pusher 241 is inserted into the assembly hole 212. One end of the pusher 241 abuts against the second end 220b of the sealing member 220, and the other end of the pusher 241 is provided with a first limiting part 242. The elastic member 243 connects the seat 210 and the pusher 241. The elastic member 243 is used to provide a force to the pusher 241 to move towards the sealing member 220. The first limiting part 242 is used to abut against the seat 210 to prevent the pusher 241 from being pulled out of the assembly hole 212. In this embodiment, the elastic member 243 can drive the pusher 241 to squeeze the second end 220b of the sealing member 220, so that the second end 220b of the sealing member 220 tends to move away from the seat 210.

[0042] Optionally, the mounting hole 212 is a stepped hole, with a first abutting surface 215 facing the sealing member 220, and the pushing member 241 has a second abutting surface 244 facing the first abutting surface 215. The elastic member 243 is a compression spring, with its two ends abutting against the first abutting surface 215 and the second abutting surface 244, respectively. Optionally, the first limiting part 242 and the pushing member 241 are detachably connected to facilitate the installation and removal of the first elastic structure 240. Optionally, the elastic member 243 can also be a tension spring, torsion spring, spring sheet, disc spring, rubber block, or other structures, and the arrangement of the elastic member 243 can be adaptively adjusted according to its selected type.

[0043] In this embodiment, the angle of the sealing member 220 can be adjusted by adjusting only one end of the sealing member 220 through the first elastic structure 240. Therefore, it is beneficial to reduce the number of first elastic structures 240 to save costs and also makes the tilt angle adjustment of the sealing member 220 more convenient. In some embodiments, only one first elastic structure 240 can be provided to abut against the second end 220b of the sealing member 220; in other embodiments, a row of first elastic structures 240 can be arranged along the rotation axis of the valve body assembly 200 to abut against the second end 220b of the sealing member 220.

[0044] In this embodiment, the elastic mechanism further includes a second elastic structure 250. The connector 230 includes a connecting shaft 231 and a second limiting portion 232. The connecting shaft 231 is inserted into the mounting hole 211, and the diameter of the connecting shaft 231 is smaller than the diameter of the mounting hole 211. One end of the connecting shaft 231 is connected to the sealing member 220, and the other end is connected to the second limiting portion 232. The second elastic structure 250 is sleeved on the connecting shaft 231, and the second elastic structure 250 is used to cause the sealing member 220 to tend to move away from the seat 210 along a first direction. The second limiting portion 232 is used to abut against the seat 210 to prevent the connecting shaft 231 from being pulled out of the mounting hole 211. In this embodiment, by providing the second elastic structure 250, it is beneficial to increase the pressure of the sealing member 220 against the base 100, thereby improving the sealing strength. Furthermore, after sealing the first channel 111, the sealing member 220 maintains the overall compressive force on the base 100, thus maintaining a good sealing effect. Optionally, the second elastic structure 250 includes a disc spring. Disc springs have strong damping and vibration absorption capabilities and can withstand large loads with small deformations, making them suitable for applications with limited axial space. In other embodiments, the second elastic structure 250 can also be a common compression spring.

[0045] In this embodiment, the connector 230 can be a bolt, the connecting shaft 231 is the bolt shank, and the second limiting part 232 is the bolt head; the connector 230 can be screwed to the sealing part 220.

[0046] In this embodiment, a first groove 213 and a second groove 214 are respectively provided on opposite sides of the seat 210. The two ends of the mounting hole 211 in the axial direction are respectively connected to the first groove 213 and the second groove 214. The first groove 213 can accommodate at least a portion of the second elastic structure 250, and the second groove 214 accommodates the second limiting part 232. By providing the first groove 213 and the second groove 214, the structure of the valve body assembly 200 can be made more compact.

[0047] The process of a valve device from opening to closing is as follows: Figures 6 to 8As shown. Before blocking the first channel 111, the first elastic structure 240 and the second elastic structure 250 push the blocking member 220 to its extreme position away from the seat 210, and the first limiting part 242 and the second limiting part 232 abut against the seat 210. Before the blocking member 220 abuts against the first plate 110, because the first elastic structure 240 acts on the second end 220b of the blocking member 220, the second end 220b of the blocking member 220 can have a certain forward tilt, that is, the distance between the second end 220b of the blocking member 220 and the seat 210 is greater than the distance between the first end 220a of the blocking member 220 and the seat 210. By pre-adjusting the tilt angle of the sealing member 220, when the sealing member 220 abuts against the first plate 110, the second end 220b of the sealing member 220 will not lag behind the first end 220a in contacting the first plate 110 too late. Alternatively, the second end 220b of the sealing member 220 can contact the first plate 110 simultaneously with the first end 220a, or the second end 220b of the sealing member 220 can contact the first plate 110 before the first end 220a. This can improve the problem of uneven sealing and poor sealing effect caused by the first end 220a of the sealing member 220 contacting the first plate 110 significantly earlier in the prior art. Furthermore, with the sealing ring 222 provided in the sealing member 220, the end of the sealing ring 222 near the rotation axis and the end away from the rotation axis can almost simultaneously contact the first plate 110, thus fitting snugly against the first plate 110. During the compression process, the sealing ring 222 is less likely to be subjected to lateral friction from the first plate 110, reducing the risk of the sealing ring 222 falling off. During the process from the sealing member 220 contacting the first plate 110 to further compressing the first plate 110 and completely sealing the first channel 111, the mobility of the sealing member 220 relative to the seat 210 allows it to spontaneously adjust its posture according to the force applied, ultimately pressing smoothly against the first plate 110 without easily becoming skewed.

[0048] In summary, this application provides a valve device including a base 100, a valve body assembly 200, and a drive assembly 300. The valve body assembly 200 includes a seat 210, a connector 230, a sealing member 220, and an elastic mechanism. The seat 210 has a mounting hole 211, and the connector 230 is inserted into the mounting hole 211. A gap exists between the connector 230 and the inner wall of the mounting hole 211, and the connector 230 is connected to the sealing member 220. The drive assembly 300 is used to drive the valve body assembly 200 to rotate relative to the base 100 in a first direction, so that the sealing member 220 presses against the base 100 and blocks the first channel 111. The drive assembly 300 is also used to drive the valve body assembly 200 to rotate relative to the base 100 in a second direction, so that the sealing member 220 opens the first channel 111. By providing the elastic mechanism, the sealing member 220 has a tendency to move away from the seat 210 in the first direction. Because there is a gap between the connector 230 and the mounting hole 211, the sealing member 220 has a certain amount of movement relative to the seat 210. Therefore, when the sealing member 220 contacts the base 100 in the first direction, the sealing member 220 can adjust its posture relative to the base 100 according to its own force, and will not cause the other end to be unable to reliably press against the base 100 due to a large compressive force generated at one end. Therefore, the first end 220a and the second end 220b of the sealing member 220 can reliably abut against the base 100. Moreover, during the process from the sealing member 220 contacting the base 100 to completely sealing the first channel 111, the sealing member 220 and the base 100 are not prone to generating large lateral friction forces, which will not easily cause the sealing ring 222 on the sealing member 220 to fall off, thereby ensuring the reliability of the seal.

[0049] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0050] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A valve device, characterized in that, The device includes a base, a valve body assembly, and a drive assembly. The base has a first channel. The drive assembly is drively connected to the valve body assembly. The valve body assembly includes a seat, a connector, a sealing element, and an elastic mechanism. The seat has a mounting hole. The connector is inserted into the mounting hole, and there is a gap between the connector and the inner wall of the mounting hole. The connector is connected to the sealing element. The drive assembly drives the valve body assembly to rotate relative to the base in a first direction, so that the sealing element presses against the base and seals one end of the first channel. The drive assembly also drives the valve body assembly to rotate relative to the base in a second direction, so that the sealing element opens the first channel. The elastic mechanism causes the sealing element to tend to move away from the seat in the first direction.

2. The gate valve apparatus of claim 1, wherein, The plugging member has a first end close to the rotation axis of the valve body assembly and a second end away from the rotation axis of the valve body assembly, and the connector is connected between the first end and the second end of the plugging member.

3. The gate valve apparatus of claim 2, wherein, The number of the connectors is one; Alternatively, the number of connectors may be two or more, and all connectors may be arranged in a row in a preset direction, the preset direction being parallel to the rotation axis of the valve body assembly.

4. The gate valve apparatus of claim 2, wherein, The elastic mechanism includes a first elastic structure that abuts against the second end of the sealing member, such that the second end of the sealing member tends to move away from the seat along the first direction.

5. The gate valve apparatus of claim 4, wherein, The base has an assembly hole. The first elastic structure includes a pusher and an elastic member. The pusher is inserted into the assembly hole. One end of the pusher abuts against the second end of the sealing member. The other end of the pusher is provided with a first limiting part. The elastic member connects the base and the pusher. The elastic member is used to provide a force to the pusher to move towards the sealing member. The first limiting part abuts against the base to prevent the pusher from being pulled out of the assembly hole.

6. The gate valve apparatus of claim 5, wherein, The assembly hole is a stepped hole, and the assembly hole has a first abutting surface facing the sealing member. The pushing member has a second abutting surface facing the first abutting surface. The elastic member is a compression spring, and the two ends of the compression spring abut against the first abutting surface and the second abutting surface, respectively.

7. The gate valve apparatus of claim 1, wherein, The elastic mechanism includes a second elastic structure, and the connector includes a connecting shaft and a second limiting part. The connecting shaft is inserted into the mounting hole, and the diameter of the connecting shaft is smaller than the diameter of the mounting hole. One end of the connecting shaft is connected to the sealing member, and the other end of the connecting shaft is connected to the second limiting part. The second elastic structure is sleeved on the connecting shaft. The second elastic structure is used to make the sealing member tend to move away from the seat body along the first direction. The second limiting part is used to abut against the seat body to prevent the connecting shaft from being pulled out of the mounting hole.

8. The gate valve apparatus of claim 7, wherein, The second elastic structure includes a disc spring.

9. The gate valve apparatus of any one of claims 1-8, wherein, The substrate forms a receiving cavity, and the valve body assembly is disposed within the receiving cavity. The substrate includes a first plate and a second plate spaced apart. The receiving cavity is formed between the first plate and the second plate. The first channel is formed on the first plate, and a second channel opposite to the first channel is formed on the second plate.

10. The gate valve apparatus of any one of claims 1-8, wherein, The drive assembly includes a drive component and a drive shaft. The drive shaft is rotatably connected to the base, and the base is connected to the outer peripheral surface of the drive shaft. The drive component is drively connected to the drive shaft and is used to drive the drive shaft to rotate.

11. The gate valve apparatus of claim 10, wherein, The drive assembly includes two drive components, which are respectively connected to both ends of the drive shaft.

12. The gate valve apparatus of any one of claims 1-8, wherein, A sealing ring is provided on the side of the sealing member away from the base body, and the sealing ring is used to abut against the base body when the sealing member blocks the first channel.

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