Transfer valves and vacuum systems

Abstract

This application discloses a transmission valve and a vacuum system, belonging to the technical field of sealing devices. The transmission valve includes a housing, a valve core, a driving component, and a limiting device. The housing has a first receiving cavity; the valve core passes through the housing, with a portion of the valve core disposed in the first receiving cavity; the driving component is disposed in the first receiving cavity and connected to the housing, having a first initial position and a first locked position. The driving component is capable of linear displacement, moving between the first initial position and the first locked position, and driving the valve core to move; the limiting device is connected to the housing, with a portion of the limiting device able to enter the first receiving cavity and connect to the driving component located in the first locked position to limit the driving component. This application achieves a locking effect by setting a limiting device to limit the driving component located in the first locked position, thereby preventing valve core movement and pipeline leakage, and achieving a better sealing effect.

Description

Technical Field

[0001] This application belongs to the field of sealing device technology, specifically relating to a transmission valve and a vacuum system. Background Technology

[0002] Transmission valves close or open pipelines by moving the valve core through an actuator. In some operating conditions, the valve core may be affected by external forces when it is in the closed position. The actuator that brings the valve core to the closed position will overcome the external forces and keep the valve core in the closed position.

[0003] However, when the drive component fails, the valve core cannot independently overcome external forces and move, causing the closed pipeline to no longer seal and leak, or even change from the closed state to the open state. Summary of the Invention

[0004] Purpose of the invention: This application provides a transmission valve to solve the technical problem of pipeline leakage caused by valve core movement; another purpose of this application is to provide a vacuum system.

[0005] Technical solution: This application provides a transmission valve, including:

[0006] A housing having a first receiving cavity;

[0007] A valve core, which passes through the housing, with a portion of the valve core disposed in the first receiving cavity;

[0008] A driving member is disposed in the first receiving cavity and is connected to the housing and the valve core respectively. The driving member has a first initial position and a first locked position. The driving member is capable of performing linear displacement, moving between the first initial position and the first locked position, and driving the valve core to move.

[0009] A limiting device is connected to the housing, and a portion of the limiting device is capable of entering the first receiving cavity and connecting to a drive member located in the first locking position to limit the drive member.

[0010] In some embodiments, the drive member is sealed to the housing, and the drive member is capable of dividing the first receiving cavity into a first sub-cavity and a second sub-cavity; the housing has a first vent and a second vent, the first vent penetrating the housing and communicating with the first sub-cavity, the second vent penetrating the housing and communicating with the second sub-cavity, and a portion of the valve core is located in the first sub-cavity.

[0011] In some embodiments, the housing has a first through hole communicating with the first receiving cavity;

[0012] The limiting device includes:

[0013] A limiting member, which passes through the first through hole, has a second initial position and a second locking position;

[0014] A reset member is fixedly connected to the housing and connected to the limiting member. The reset member is used to drive the limiting member to move from the second initial position to the second locking position to limit the driving member.

[0015] In some embodiments, the reset element includes:

[0016] The base portion is fixedly connected to the housing;

[0017] An elastic part, one end of which is connected to the base part and the other end of which is connected to the limiting member, is used to drive the limiting member to move from the second initial position to the second locking position.

[0018] In some embodiments, the housing has a mounting groove and a third vent, the first through hole connects the mounting groove and the first receiving cavity, the third vent connects the mounting groove and the first sub-cavity, and the mounting groove has a groove wall;

[0019] The limiting component includes:

[0020] The limiting part is disposed in the first through hole;

[0021] The movable part is connected to the limiting part and passes through the mounting groove. The movable part is sealed to the groove wall to form a second receiving cavity. The second receiving cavity is connected to the first through hole and the third air hole. The gas entering the second receiving cavity can drive the movable part to move and drive the limiting part to exit the first receiving cavity.

[0022] In some embodiments, the drive member has a guide surface such that when the drive member moves from the first initial position to the first locking position, the guide surface can abut against the limiting member to drive the limiting member to move from the second locking position to the second initial position.

[0023] In some embodiments, the drive member has a limiting groove, and a portion of the limiting member located in the second locking position can be located in the limiting groove to limit the drive member.

[0024] In some embodiments, the housing has a first guide groove; the drive member has a second guide groove;

[0025] The valve core includes:

[0026] Valve stem;

[0027] A guide member is connected to the valve stem, a portion of the guide member is disposed in the first guide groove, and the guide member is movable along the extension direction of the first guide groove to guide the valve stem; the guide member is rotatably disposed in the first guide groove so that the valve stem can rotate relative to the housing.

[0028] A guide member is connected to the valve stem and is disposed in the second guide groove. The guide member is movable along the extension direction of the second guide groove to rotate the valve stem.

[0029] In some embodiments, the valve stem has a clamping groove, the guide is disposed in the clamping groove, and a portion of the drive is disposed in the clamping groove.

[0030] In some embodiments, the transmission valve further includes an elastic element located between the drive element and the guide element, and connected to the drive element and the guide element respectively.

[0031] In some embodiments, the drive includes:

[0032] The first part is disposed in the first receiving cavity;

[0033] The sidewall is sealed to the housing and connected to the first part. The sidewall forms a third receiving cavity, a portion of the valve core is disposed in the third receiving cavity, and a portion of the elastic element is located on the sidewall and connected to the sidewall.

[0034] The second part is disposed in the first receiving cavity and connected to the first part, and the second guide groove is disposed in the second part.

[0035] Accordingly, this application also provides a vacuum system including a transfer valve as described in any of the above embodiments.

[0036] Beneficial Effects: Compared with the prior art, the transmission valve provided in this application includes a housing, a valve core, a driving member, and a limiting device. The housing has a first receiving cavity; the valve core passes through the housing, and a portion of the valve core is disposed in the first receiving cavity; the driving member is disposed in the first receiving cavity and connected to the housing, and has a first initial position and a first locked position. The driving member can perform linear displacement, moving between the first initial position and the first locked position, and driving the valve core to move; the limiting device is connected to the housing, and a portion of the limiting device can enter the first receiving cavity and connect with the driving member located in the first locked position to limit the driving member. This application achieves a locking effect on the driving member in the first locked position by setting a limiting device to limit the driving member in the first locked position, thereby preventing the valve core from moving and causing pipeline leakage, and achieving a better sealing effect. Attached Figure Description

[0037] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0038] Figure 1 This is a schematic diagram of the structure of the transmission valve provided in an embodiment of this application;

[0039] Figure 2 A cross-sectional view of the transfer valve in one state provided in an embodiment of this application;

[0040] Figure 3 A cross-sectional view of the transfer valve provided in an embodiment of this application in another state;

[0041] Figure 4 A cross-sectional view of the transfer valve provided in an embodiment of this application in yet another state;

[0042] Figure 5 A cross-sectional view of the drive component in the transmission valve provided in an embodiment of this application;

[0043] Figure 6 A half-sectional view of a portion of the housing in the transfer valve provided in an embodiment of this application;

[0044] Figure 7 for Figure 6 Detailed view of point A in the middle circle;

[0045] Figure 8 A half-sectional view of a portion of the housing and a portion of the drive component in a transmission valve provided in an embodiment of this application;

[0046] Figure 9 The transmission valve provided in the embodiments of this application is in one state Figure 8 Detailed view of point B in the middle circle;

[0047] Figure 10The transmission valve provided in the embodiments of this application is in another state Figure 8 Detailed view of point B in the middle circle;

[0048] Figure 11 A cross-sectional view of the transmission valve provided in an embodiment of this application from another angle in yet another state;

[0049] Figure 12 This is a schematic diagram of the structure of the transmission valve at some locations provided in the embodiments of this application;

[0050] Figure 13 An exploded view of the transmission valve at a partial location provided in an embodiment of this application;

[0051] Figure 14 This is a schematic diagram of the structure of a valve plate in a transmission valve provided in an embodiment of this application;

[0052] Figure 15 A side view of a valve plate in a transmission valve provided in an embodiment of this application;

[0053] Figure 16 This is a schematic diagram of another valve plate in the transmission valve provided in the embodiments of this application;

[0054] Figure 17 A side view of another valve plate in the transmission valve provided in an embodiment of this application.

[0055] Reference numerals in the attached drawings: 100 - housing, 110 - first receiving cavity, 111 - first sub-cavity, 112 - second sub-cavity, 120 - first vent, 130 - second vent, 140 - third vent, 150 - first through hole, 160 - mounting groove, 161 - groove wall, 170 - first guide groove, 180 - second receiving cavity, 191 - first seal, 192 - third seal, 193 - shock absorber, 200 - valve core, 210 - valve stem, 211 - clamping groove, 220 - guide, 230 - guide, 30 0-Driver, 310-Guide surface, 320-Limiting groove, 330-First part, 340-Side wall, 350-Second part, 351-Second guide groove, 360-Third receiving cavity, 370-Second sealing element, 400-Limiting device, 410-Limiting element, 411-Limiting part, 412-Moving part, 420-Reset element, 421-Base part, 422-Elastic part, 500-Elastic element, 600-Valve plate, 610-Contact surface, 620-Connecting surface, 630-First groove, 640-Second groove. Detailed Implementation

[0056] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0057] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" 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, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0058] The following disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure of this application, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit this application.

[0059] The transmission valve closes or opens the pipeline by moving the valve core 200 through the drive element 300. In some operating conditions, the valve core 200 may be affected by external forces when it is in the closed position. The drive element 300, which brings the valve core 200 to the closed position, will overcome the external forces and keep the valve core 200 in the closed position.

[0060] However, when the drive component 300 fails, the valve core 200 cannot independently overcome the external force and move, causing the closed pipeline to no longer seal and leak, or even change from the closed state to the open state.

[0061] For example, under certain operating conditions, when the drive component 300 drives the valve core 200, it does work against gravity. After the valve plate 600 closes and seals the pipeline, the drive component 300 becomes loose under the action of gravity, causing the valve core 200 to shift, resulting in the already closed pipeline no longer being sealed and causing leakage.

[0062] To address the technical problem that failure of the aforementioned drive component 300 leads to movement of the valve core 200, resulting in a leaky pipeline, the first embodiment of this application provides a transfer valve. Please refer to [link to relevant documentation]. Figure 1 The transmission valve includes a housing 100, a valve core 200, a drive member 300, and a limiting device 400. The housing 100 has a first receiving cavity 110. The valve core 200 passes through the housing 100, and a portion of the valve core 200 is disposed in the first receiving cavity 110. The drive member 300 is disposed in the first receiving cavity 110 and is connected to both the housing 100 and the valve core 200. The drive member 300 has a first initial position and a first locked position. The drive member 300 is capable of performing linear displacement, moving between the first initial position and the first locked position, and driving the valve core 200 to move. The limiting device 400 is connected to the housing 100, and a portion of the limiting device 400 can enter the first receiving cavity 110 and connect to the drive member 300 located in the first locked position to limit the drive member 300.

[0063] Understandably, the transmission valve also includes a valve plate 600. One end of the valve core 200 is connected to the drive unit 300, and the other end of the valve core 200 is connected to the valve plate 600. The drive unit 300 moves the valve core 200 and drives the valve plate 600 to move, so as to realize the valve plate 600 to close and open the pipeline.

[0064] Specifically, under the action of driving force, the driving member 300 can move in the first receiving cavity 110 along the first direction X, so as to drive the valve core 200 to move along the first direction X. When the driving member 300 is in the first locked position, the valve core 200 drives the valve plate 600 to close the pipeline. Herein, the first direction X is the direction of the X arrow in the attached figure.

[0065] In some embodiments, the first initial position and the first locking position are two extreme positions of the drive member 300 in the first direction X.

[0066] Understandably, when the drive component 300 is in the first locked position, the valve plate 600 closes the pipeline. At this time, the limiting device 400 limits the drive component 300. Even if the driving force is lost, the external force cannot move the drive component 300 because the limiting component 410 limits the drive component 300. The valve core 200 and the valve plate 600 are also limited accordingly, and the pipeline will remain closed.

[0067] In some embodiments, a portion of the limiting device 400 can be moved below the drive member 300 and connected to the drive member 300 to prevent the drive member 300 from moving due to gravity or external force; in other embodiments, a portion of the limiting device 400 is inserted into the drive member 300 and connected to the drive member 300 to limit the drive member 300.

[0068] In some embodiments, the driving force for driving the drive member 300 is provided by a device capable of providing linear power, such as any one of a variety of drive devices capable of providing linear power, such as a cylinder, hydraulic cylinder, or linear module. In other embodiments, the drive member 300 is a piston in a cylinder, and a pressure difference is generated on one side of the drive member 300 in the first direction X by injecting gas into the drive member 300 to create a driving force, thereby moving the drive member 300 along the first direction X.

[0069] In the above embodiments, even if the driving component 300 loses its driving force, the limiting device 400 can still limit the driving component 300 to prevent the driving component 300 from moving, thereby preventing the valve core 200 and the valve plate 600 from moving together, and thus preventing leakage from the closed pipeline.

[0070] In some embodiments, please refer to Figure 2 , Figure 2 This is a cross-sectional view of the transmission valve when the drive member 300 is in the first initial position. The drive member 300 is sealed to the housing 100. The drive member 300 can divide the first receiving cavity 110 into a first sub-cavity 111 and a second sub-cavity 112. The housing 100 has a first vent 120 and a second vent 130. The first vent 120 penetrates the housing 100 and communicates with the first sub-cavity 111. The second vent 130 penetrates the housing 100 and communicates with the second sub-cavity 112. A portion of the valve core 200 is located in the first sub-cavity 111.

[0071] It is understandable that, since the first vent 120 is connected to the first sub-cavity 111 and the second vent 130 is connected to the second sub-cavity 112, and the driving member 300 is sealed to the housing 100, injecting gas into either the first sub-cavity 111 or the second sub-cavity 112 can create a pressure difference on both sides of the driving member 300, thereby generating a driving force that causes the driving member 300 to move.

[0072] Since a portion of the valve core 200 is located in the first sub-cavity 111 and the valve core 200 passes through the housing 100, in order to improve the efficiency of injecting air into the first sub-cavity 111, in some embodiments, the housing 100 and the valve core 200 are sealed together. Specifically, the housing 100 has a second through hole through which the valve core 200 passes. The transfer valve also includes a first sealing member 191, which is fixedly connected to the wall of the second through hole, sealingly connecting the wall of the second through hole and the valve core 200. In some embodiments, the first sealing member 191 is a sealing ring.

[0073] The drive unit 300 includes a first part 330 and a second seal 370. The valve core 200 is connected to the first part 330. The second seal 370 is sleeved on the first part 330 and can move with the first part 330. The second seal 370 seals the first part 330 and the housing 100. In some embodiments, the second seal 370 is a sealing ring.

[0074] Specifically, the first vent 120 and the second vent 130 are respectively connected to connectors to connect to the air pipe, so as to realize the injection and extraction of gas.

[0075] In the above embodiments, by injecting gas into the first sub-cavity 111 or the second sub-cavity 112 respectively to drive the drive member 300 to move, the volume of the transmission valve can be reduced.

[0076] In some embodiments, please refer to Figure 8 , Figure 9 and Figure 10 ,in, Figure 9 This is a schematic diagram showing the limiting member 410 in the second locking position. Figure 10 This is a schematic diagram of the limiting member 410 in the second initial position. The housing 100 has a first through hole 150 communicating with the first receiving cavity 110; the limiting device 400 includes a limiting member 410 and a resetting member 420. The limiting member 410 passes through the first through hole 150 and has a second initial position and a second locking position; the resetting member 420 is fixedly connected to the housing 100 and is connected to the limiting member 410. The resetting member 420 is used to drive the limiting member 410 to move from the second initial position to the second locking position to limit the driving member 300.

[0077] Specifically, the limiting member 410 is movable along the second direction Y. In some embodiments, the second direction Y intersects with the first direction X; in other embodiments, the second direction Y is perpendicular to the first direction X. The second direction Y is the direction indicated by the Y-arrow in the accompanying drawings.

[0078] Specifically, when the driving member 300 is in the first locking position, the reset member 420 can drive the limiting member 410 to move along the second direction Y into the second locking position and connect with the driving member 300 to limit the driving member 300 in the first locking position.

[0079] In some embodiments, the second initial position and the second locking position are respectively the extreme positions of the limiting member 410 in the second direction Y.

[0080] It is understood that the reset member 420 is used to drive the limiting member 410 to move from the second initial position to the second locking position, meaning that the reset member 420 can reset the limiting member 410, which is in the second initial position, to the second locking position. Specifically, in some embodiments, the reset member 420 can drive the limiting member 410 to achieve reciprocating motion, that is, it can drive the limiting member 410 to move back and forth between the second initial position and the second locking position. In other words, the reset member 420 can both drive the limiting member 410 to limit the driving member 300 and release the limiting member 410 from limiting the driving member 300. In other embodiments, the reset member 420 can only drive the limiting member 410 to move from the second initial position to the second locking position. In other words, the reset member 420 can only control the limiting member 410 to limit the driving member 300, but cannot release the limiting member 410 from limiting the driving member 300.

[0081] In some embodiments, the reset member 420 is any one of a variety of drive devices capable of providing linear power, such as a cylinder, hydraulic cylinder, or linear module, to drive the limiting member 410 to move along the second direction Y and between a second initial position and a second locked position. In other embodiments, the reset member 420 includes a spring capable of pushing the limiting member 410 from the second initial position to the second locked position.

[0082] In the above embodiment, by setting a reset member 420 fixedly connected to the housing 100, it is possible to at least control the limiting member 410 to limit the drive member 300 located in the first locking position.

[0083] In some embodiments, please refer again Figure 9 and Figure 10 The reset member 420 includes a base portion 421 and an elastic portion 422. The base portion 421 is fixedly connected to the housing 100. One end of the elastic portion 422 is connected to the base portion 421, and the other end of the elastic portion 422 is connected to the limiting member 410. The elastic portion 422 is used to drive the limiting member 410 to move from the second initial position to the second locking position.

[0084] In some embodiments, the base portion 421 has a fourth receiving cavity, and the base portion 421 is connected to the housing 100 and covers the first through hole 150. An elastic portion 422 is disposed in the fourth receiving cavity, one end of the elastic portion 422 is connected to the base portion 421, and the other end of the elastic portion 422 is connected to the limiting member 410. When the limiting member 410 is in the second initial position, the elastic portion 422 undergoes elastic deformation, and the elastic portion 422 has a tendency to push the limiting member 410 to the second locking position.

[0085] In some embodiments, the elastic part 422 is a spring.

[0086] In the above embodiments, by providing the elastic part 422, the elastic element 500 can be driven to move from the second initial position to the second locking position, and the limiting action can be achieved without the need for an additional power source, making the structure of the transmission valve in the above embodiments more reasonable and more reliable.

[0087] In some embodiments, please refer again Figure 9 and Figure 10 The housing 100 has a mounting groove 160 and a third vent 140. A first through hole 150 connects the mounting groove 160 and the first receiving cavity 110. The third vent 140 connects the mounting groove 160 and the first sub-cavity 111. The mounting groove 160 has a groove wall 161. The limiting member 410 includes a limiting part 411 and a moving part 412. The limiting part 411 passes through the first through hole 150. The moving part 412 is connected to the limiting part 411 and passes through the mounting groove 160. The moving part 412 is sealed to the groove wall 161 to form a second receiving cavity 180. The second receiving cavity 180 is connected to the first through hole 150 and the third vent 140. The gas entering the second receiving cavity 180 can drive the moving part 412 to move and drive the limiting part 411 out of the first receiving cavity 110.

[0088] Specifically, in some embodiments, please refer to Figure 9 and Figure 10 The limiting member 410 also includes a fourth sealing member 413, which is sleeved on the moving part 412 and can move with the moving part 412. The fourth sealing member 413 seals the connection between the moving part 412 and the groove wall 161. Furthermore, the moving part 412 is provided with an annular groove, and a portion of the fourth sealing member 413 is embedded in the annular groove. In some embodiments, the fourth sealing member 413 is a sealing ring.

[0089] It is understandable that when gas is injected into the first sub-cavity 111, the following changes occur inside the transfer valve in the above embodiment:

[0090] 1. The air pressure in the first sub-cavity 111 is greater than the air pressure in the second sub-cavity 112. The driving member 300 has a tendency to move from the first locked position to the first initial position, but due to the limitation of the limiting member 410, the driving member 300 cannot move to the first initial position.

[0091] 2. Since the third vent 140 connects the first sub-cavity 111 and the second receiving cavity 180, the air pressure in the second receiving cavity 180 increases as the air pressure in the first sub-cavity 111 increases, and there is a pressure difference on both sides of the moving part 412.

[0092] 3. As the pressure difference gradually increases, the moving part 412 moves away from the driving member 300 to expand the second receiving cavity 180 to balance the pressure difference. Simultaneously, the limiting part 411 follows the moving part 412, moving away from the driving member 300, i.e., towards... Figure 9 and Figure 10 The right side moves, and the limiting piece 410 leaves the second locking position;

[0093] 4. When the limiting member 410 reaches the second initial position, the limiting of the driving member 300 is released;

[0094] 5. The driving component 300 moves towards the first initial position, that is, towards... Figure 9 and Figure 10 The pressure difference between the first sub-cavity 111 and the second sub-cavity 112 is balanced by moving downwards.

[0095] In the above embodiment, by providing a third vent 140 connecting the first sub-cavity 111 and the second receiving cavity 180, when the driving member 300 needs to move from the first locked position to the first initial position, the limiting member 410 can also move from the second locked position to the second initial position. That is, only one power source is needed and only one action is required to release the limiting device 400 from limiting the driving member 300 and also to move the driving member 300. Specifically, when the transmission valve needs to open the pipeline, only one power source and one action are needed to unlock the transmission valve and open the pipeline. Requiring only one power source makes the structure of the transmission valve more reasonable; and requiring only one action to unlock the transmission valve and open the pipeline gives the transmission valve the advantages of high reliability while also being easy to operate, given its limiting function.

[0096] In some embodiments, please refer to Figure 5 , Figure 9 and Figure 10 The drive member 300 has a guide surface 310 such that when the drive member 300 moves from the first initial position to the first locking position, the guide surface 310 can abut against the limiting member 410 to drive the limiting member 410 to move from the second locking position to the second initial position.

[0097] Specifically, the guide surface 310 is inclined to the moving direction of the drive member 300 and the moving direction of the limiting member 410, that is, the guide surface 310 is inclined to the first direction X and the second direction Y; more specifically, the guide surface 310 is a tapered surface extending along the axial direction of the drive member 300. It can be understood that the size of the guide surface 310 along the second direction Y gradually decreases in the direction from the first initial position to the first locking position, so that the drive member 300 abuts against the limiting member 410 and pushes the limiting member 410 away from the second locking position along the second direction Y during the process of moving from the first initial position to the first locking position; in some embodiments, the first direction X is perpendicular to the second direction Y, and the guide surface 310 is a tapered surface with a taper of 45°.

[0098] In the above embodiment, by setting the guide surface 310, the driving member 300 is not affected by the limiting member 410 when moving to the first locking position. This allows the limiting device 400 to only have the function of driving the limiting member 410 to move to the second locking position, without having the function of driving the limiting member 410 to move from the second locking position to the second initial position. This simplifies the function and structure of the limiting device 400 and improves the reliability of the transmission valve.

[0099] In some embodiments, please refer to Figure 5 , Figure 9 and Figure 10 The drive member 300 has a limiting groove 320, and a portion of the limiting member 410 located in the second locking position can be located in the limiting groove 320 to limit the drive member 300.

[0100] Specifically, in some embodiments, the limiting groove 320 is a hole that can accommodate the limiting part 411; in other embodiments, the limiting groove 320 is circumferentially disposed around the driving member 300, so that during the installation of the driving member 300, there is no need to specially set the angle of the driving member 300, and the limiting part 411 can always extend into the limiting groove 320 to limit the driving member 300 when the driving member 300 is in the first locking position.

[0101] Understandably, in order to reduce the size of the limiting device 400, the limiting groove 320 is always located in the first sub-cavity 111, so that the distance between the third air hole 140 and the first through hole 150 is reduced, thereby reducing the size of the limiting device 400.

[0102] Understandably, compared to the limiting member 410 being directly connected to the driving member 300 and limiting the driving member 300 by friction, the limiting groove 320 is set so that the limiting member 410 can extend into the limiting groove 320 to limit the driving member 300. Moreover, compared to the solution where the limiting member 410 is connected to the bottom of the driving member 300 to support the driving member 300 and overcome gravity, the limiting member 410 extending into the limiting groove 320 can not only limit the movement of the driving member 300 from the first locked position to the first initial position, but also limit the movement of the driving member 300 from the first locked position to the direction away from the first initial position, resulting in a better limiting effect.

[0103] In the above embodiments, by providing a limiting groove 320 on the driving member 300, the limiting member 410 has a better limiting effect on the driving member 300.

[0104] In some embodiments, the housing 100 has a first guide groove 170; the drive member 300 has a second guide groove 351; the valve core 200 includes a valve stem 210, a guide member 220, and a guide member 230; see also Figure 11 The guide member 220 is connected to the valve stem 210. A portion of the guide member 220 is disposed in the first guide groove 170. The guide member 220 is movable along the extending direction of the first guide groove 170 to guide the valve stem 210. The guide member 220 is rotatably disposed in the first guide groove 170 so that the valve stem 210 can rotate relative to the housing 100. Please refer to [link / reference]. Figure 2 , Figure 3 , Figure 4 , Figure 12 and Figure 13 The guide 230 is connected to the valve stem 210. The guide 230 is disposed in the second guide groove 351. The guide 230 can move along the extension direction of the second guide groove 351 to rotate the valve stem 210.

[0105] In some embodiments, the housing 100 has two first guide grooves 170 disposed opposite to each other, that is, the two first guide grooves 170 are disposed opposite to each other along the second direction Y.

[0106] Specifically, please refer to Figure 11 The first guide groove 170 is arranged along the first direction X, so that the guide member 220 arranged in the first guide groove 170 can only perform displacement along the first direction X. Since the guide member 220 is connected to the valve stem 210, the linear displacement that the valve stem 210 can perform is a linear displacement along the first direction X.

[0107] Specifically, please refer to Figure 2 , Figure 3 , Figure 4The second guide groove 351 is inclined in a direction from the first initial position to the first locking position. When the driving member 300 moves from the first initial position to the first locking position, the guide member 230, guided by the second guide groove 351, can move along the second direction Y. Figure 2 , Figure 3 and Figure 4 The valve stem 210 moves to the right side of the drive member 300, causing a component movement along the second direction Y when the side of the valve stem 210 near the drive member 300 moves along the first direction X. Furthermore, since the guide member 220 can rotate within the first guide groove 170, when the side of the valve stem 210 near the drive member 300 causes a component movement along the second direction Y, it can rotate around the guide member 220, causing the end of the valve stem 210 away from the drive member 300 to move along the second direction Y. This allows the contact surface 610 of the valve plate 600 to contact the sealing surface in the pipeline, thereby sealing and closing the pipeline.

[0108] Specifically, the first guide groove 170 has a rotating surface at one end away from the drive member 300 along the first direction X. When a part of the guide member 220 comes into contact with the rotating surface, the rotating surface can restrict the part of the guide member 220 from continuing to move away from the drive member 300 along the first direction X, but the part of the guide member 220 can rotate relative to the rotating surface.

[0109] It is understandable that the friction between the part of the guide member 220 and the rotating surface is sliding friction. In order to reduce the friction between the part of the guide member 220 and the rotating surface, a bearing is installed on the part of the guide member 220 so that the friction when the part of the guide member 220 rotates relative to the rotating surface is transformed into rolling friction, thereby reducing the magnitude of the friction and making the valve stem 210 move more smoothly when rotating.

[0110] Similarly, please refer to Figure 13 In some embodiments, when the guide 230 moves within the second guide groove 351, it generates friction with the groove wall 161 of the second guide groove 351. The guide 230 is a bearing, and the width of the second guide groove 351 is greater than the outer diameter of the bearing, so that the bearing can roll within the second guide groove 351 to convert sliding friction into rolling friction, thereby reducing the magnitude of friction and further making the valve stem 210 move more smoothly when rotating.

[0111] It is understandable that the second guide groove 351 can extend along an arc or along a straight line inclined to the first direction X and the second direction Y.

[0112] In the above embodiment, by setting the first guide groove 170 to restrict the linear movement of the valve stem 210, and by setting the second guide groove 351 to rotate the valve stem 210, the valve stem 210 can be tilted, thereby making the valve plate 600 connected to the valve stem 210 fit with the sealing surface, and realizing the sealing connection between the valve plate 600 and the sealing surface.

[0113] In some embodiments, please refer to Figure 14 and Figure 15 The valve plate 600 has a mating surface 610 and a connecting surface 620 facing away from each other. The mating surface 610 is used to fit with a sealing surface in the pipeline to seal the pipeline. The connecting surface 620 is used to connect with the valve stem 210. The connecting surface 620 has a first groove 630 and a second groove 640, which are spaced apart along a first direction X. The first groove 630 is located on the side of the second groove 640 away from the drive member 300. The transmission valve also includes an adjusting member for adjusting the interval between the valve stem 210 and the valve plate 600. A portion of the multiple adjusting members is disposed in the first groove 630, and the multiple adjusting members in the first groove 630 are arranged in a direction perpendicular to the first direction and the second direction. Another portion of the multiple adjusting members is disposed in the second groove 640, and the multiple adjusting members in the second groove 640 are arranged in a direction perpendicular to the first direction and the second direction. The adjusting member is located between the valve stem 210 and the valve plate 600 and is respectively connected to the valve stem 210 and the valve plate 600. The number of adjusting members in the second groove 640 is greater than the number of adjusting members in the first groove 630, so that the distance between the valve stem 210 and the valve plate 600 gradually increases from the first locking position to the first initial position, so that the contact surface 610 of the tilted valve plate 600 can be parallel to and in contact with the sealing surface.

[0114] Specifically, in some embodiments, the adjusting element is a shim, and the number of shims in the second groove 640 is greater than the number of shims in the first groove 630.

[0115] In other embodiments, please ask the cashier for the month. Figure 16 and Figure 17 The mating surface 610 and the connecting surface 620 are inclined. Specifically, the distance between the mating surface 610 and the connecting surface 620 gradually increases from the first locking position to the first initial position, so that the mating surface 610 of the inclined valve plate 600 can be parallel to and mated with the sealing surface.

[0116] Specifically, please refer to Figure 17 The distance between the mating surface 610 and the connecting surface 620 at the end furthest from the housing is d, and the distance between the mating surface 610 and the connecting surface 620 at the end closest to the housing is D, satisfying: d < D.

[0117] Since the valve stem 210 moves the valve plate 600, which in turn causes the valve plate 600 to rotate, in order for the contact surface 610 to contact the sealing surface in the pipeline, the contact surface 610 needs to be parallel to the sealing surface in the pipeline after the valve plate 600 rotates.

[0118] In some embodiments, please refer to Figure 12 and Figure 13 The valve stem 210 has a clamping groove 211, the guide 230 is disposed in the clamping groove 211, and a portion of the drive member 300 is disposed in the clamping groove 211.

[0119] Specifically, the valve core 200 also includes a pin and a retaining ring. Parts of the guide 230 and the drive 300 are both disposed in the clamping groove 211, and the guide 230 is disposed in the second guide groove 351. The pin passes through the valve stem 210 on both sides of the clamping groove 211 and the guide 230 in sequence to limit the parts of the guide 230 and the drive 300 relative to the valve stem 210 perpendicular to the pin axis. The retaining ring is attached to the pin to prevent the pin from loosening in the circumferential direction.

[0120] Understandably, the clamping groove 211 can restrict the relative movement between the valve stem 210 and the drive member 300 along the second direction Y, preventing the valve stem 210 and the drive member 300 from wobbling along the second direction Y, making the drive member 300 more stable when it drives the valve core 200 to move.

[0121] In some embodiments, please refer again Figure 2 The transmission valve also includes an elastic element 500, which is located between the drive element 300 and the guide element 220 and is connected to the drive element 300 and the guide element 220 respectively.

[0122] In the above embodiment, by setting the elastic element 500, the valve stem 210 and the drive element 300 can maintain a distance to prevent the guide element 230 from sliding into the other end of the second guide groove 351, so as to prevent the valve stem 210 from tilting in advance before completing the linear displacement, and make the valve stem 210 move more smoothly when performing linear displacement along the first direction X.

[0123] In some embodiments, please refer to Figure 5 The drive component 300 includes a first part 330, a side wall 340, and a second part 350. The first part 330 is disposed in the first receiving cavity 110. The side wall 340 is sealed to the housing 100 and connected to the first part 330. The side wall 340 forms a third receiving cavity 360. A portion of the valve core 200 is disposed in the third receiving cavity 360, and a portion of the elastic member 500 is located in the side wall 340 and connected to the side wall 340. The second part 350 is disposed in the first receiving cavity 110 and connected to the first part 330. A second guide groove 351 is disposed in the second part 350.

[0124] In some embodiments, the drive member 300 further includes a fastener that passes through the first part 330 along a first direction X and fixes the second part 350 to the first part 330.

[0125] In some embodiments, the first part 330 has a placement groove with an internal thread on its inner wall, and the side wall 340 has an external thread at one end near the first part 330, and the side wall 340 is threadedly connected to the first part 330.

[0126] It is understandable that, since the drive member 300 is sealed to the housing 100, and the drive member 300 divides the first receiving cavity 110 into a first sub-cavity 111 and a second sub-cavity 112; and since the side wall 340 is sealed to the housing 100, the side wall 340 further divides the first sub-cavity 111 into a drive cavity and a sliding cavity, wherein the drive cavity is formed by the side wall 340, the housing 100 and the drive member 300.

[0127] Specifically, in some embodiments, the housing 100 includes a housing body and a protrusion disposed in the first sub-cavity 111, the protrusion being connected to the housing body. The housing 100 also includes a third seal 192, which is sealingly connected to the protrusion and the sidewall 340 to seal the connection between the protrusion and the sidewall 340. In some embodiments, the third seal 192 is a sealing ring.

[0128] It is understood that in the above embodiment, the first sub-cavity 111 is further divided into a driving cavity and a sliding cavity by the side wall 340, so that gas only needs to enter the smaller driving cavity to drive the driving member 300 and the limiting member 410, which makes the pressure difference between the driving cavity and the second sub-cavity 112 generate faster, and the action of the transmission valve can be more sensitive. In addition, by setting the side wall 340, which can only move in a straight line and will not tilt, to connect with the housing 100 to separate the first sub-cavity 111, the reliability of the sealing connection can be improved.

[0129] In some embodiments, when the drive member 300 is in the first locked position, the first part 330 is in contact with the protrusion in the first direction, that is, the protrusion can limit the first part 330 to a limit position in the drive cavity.

[0130] In the above embodiments, by providing the sidewall 340, the valve core 200 can move more smoothly during linear movement, and by making the sidewall 340 sealed to the housing 100, the sensitivity of the transmission valve can also be improved.

[0131] In some embodiments, the housing 100 further includes a shock absorber 193 connected to the housing body to cushion the drive 300 when it moves to the first initial position, thereby reducing the vibration of the transmission valve during operation.

[0132] Accordingly, this application also provides a vacuum system, including a transfer valve and a pipeline as described in any of the above embodiments, wherein the transfer valve is connected to the pipeline and is used to close or open the pipeline.

[0133] The above provides a detailed description of a transmission valve and vacuum system provided in the embodiments of this application. Specific examples have been used in this application to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A transfer valve, characterized in that, include: A housing (100) having a first receiving cavity (110) and a first guide groove (170); the first receiving cavity (110) includes a first sub-cavity (111) and a second sub-cavity (112); the housing (100) having a first vent (120) and a second vent (130), the first vent (120) penetrating the housing (100) and communicating with the first sub-cavity (111), and the second vent (130) penetrating the housing (100) and communicating with the second sub-cavity (112); A valve core (200) is disposed through the housing (100), and a portion of the valve core (200) is disposed in the first sub-cavity (111); the valve core (200) includes a valve stem (210), a guide (220) and a guide (230); the guide (220) is rotatably disposed in the first guide groove (170) so that the valve stem (210) can rotate relative to the housing (100); A drive member (300) having a second guide groove (351); the drive member (300) is disposed in the first receiving cavity (110) and is connected to the housing (100) and the valve core (200) respectively; the drive member (300) has a first initial position and a first locked position; the drive member (300) is capable of performing linear displacement, moving between the first initial position and the first locked position, and driving the valve core (200) to move; a guide member (230) is disposed in the second guide groove (351) and is capable of moving along the extension direction of the second guide groove (351) to rotate the valve stem (210); A limiting device (400) is connected to the housing (100), and a portion of the limiting device (400) is capable of entering the first receiving cavity (110) and connecting to the drive member (300) located in the first locking position to limit the drive member (300).

2. The transmission valve according to claim 1, characterized in that, The drive unit (300) is sealed to the housing (100), and the drive unit (300) is capable of dividing the first receiving cavity (110) into the first sub-cavity (111) and the second sub-cavity (112).

3. The transmission valve according to claim 2, characterized in that, The housing (100) has a first through hole (150) communicating with the first receiving cavity (110); The limiting device (400) includes: A limiting member (410) is provided through the first through hole (150), and the limiting member (410) has a second initial position and a second locking position. A reset member (420) is fixedly connected to the housing (100). The reset member (420) is connected to the limiting member (410). The reset member (420) is used to drive the limiting member (410) to move from the second initial position to the second locking position to limit the driving member (300).

4. The transmission valve according to claim 3, characterized in that, The reset component (420) includes: A base portion (421) is fixedly connected to the housing (100); An elastic part (422) is provided, one end of which is connected to the base part (421), and the other end of which is connected to the limiting member (410). The elastic part (422) is used to drive the limiting member (410) to move from the second initial position to the second locking position.

5. The transmission valve according to claim 3, characterized in that, The housing (100) has a mounting groove (160) and a third vent (140), the first through hole (150) connects the mounting groove (160) and the first receiving cavity (110), the third vent (140) connects the mounting groove (160) and the first sub-cavity (111), and the mounting groove (160) has a groove wall (161); The limiting member (410) includes: A limiting part (411) is provided through the first through hole (150); A movable part (412) is connected to the limiting part (411). The movable part (412) passes through the mounting groove (160) and is sealed to the groove wall (161) to form a second receiving cavity (180). The second receiving cavity (180) communicates with the first through hole (150) and the third air hole (140). Gas entering the second receiving cavity (180) can drive the movable part (412) to move and drive the limiting part (411) to exit the first receiving cavity (110).

6. The transmission valve according to claim 3, characterized in that, The drive member (300) has a guide surface (310) such that when the drive member (300) moves from the first initial position to the first locking position, the guide surface (310) can abut against the limiting member (410) to drive the limiting member (410) to move from the second locking position to the second initial position.

7. The transmission valve according to claim 3, characterized in that, The drive member (300) has a limiting groove (320), and a portion of the limiting member (410) located in the second locking position can be located in the limiting groove (320) to limit the drive member (300).

8. The transmission valve according to claim 3, characterized in that, The guide (220) is connected to the valve stem (210), a portion of the guide (220) is disposed in the first guide groove (170), and the guide (220) is movable along the extension direction of the first guide groove (170) to guide the valve stem (210); the guide (230) is connected to the valve stem (210).

9. The transmission valve according to claim 8, characterized in that, The valve stem (210) has a clamping groove (211), the guide (230) is disposed in the clamping groove (211), and a portion of the drive member (300) is disposed in the clamping groove (211).

10. The transmission valve according to claim 8, characterized in that, The transmission valve further includes an elastic element (500) located between the drive element (300) and the guide element (220), and connected to the drive element (300) and the guide element (220) respectively.

11. The transmission valve according to claim 10, characterized in that, The drive unit (300) includes: The first part (330) is disposed in the first receiving cavity (110); A sidewall (340) is sealed to the housing (100), the sidewall (340) is connected to the first part (330), the sidewall (340) forms a third receiving cavity (360), a portion of the valve core (200) is disposed in the third receiving cavity (360), and a portion of the elastic element (500) is located on the sidewall (340) and connected to the sidewall (340); The second part (350) is disposed in the first receiving cavity (110) and connected to the first part (330), and the second guide groove (351) is disposed in the second part (350).

12. A vacuum system, characterized in that, Includes the transmission valve as described in any one of claims 1-11.

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