Transmission valve and vacuum system

Abstract

The invention discloses a transmission valve and a vacuum system, and belongs to the technical field of sealing devices.The transmission valve comprises a shell, a valve element, a driving part and a limiting device, and the shell is provided with a first containing cavity; the valve element penetrates through the shell, and part of the valve element is arranged in the first containing cavity. The driving part is arranged in the first containing cavity and connected with the shell, the driving part is provided with a first initial position and a first locking position, and the driving part can execute linear displacement, move between the first initial position and the first locking position and drive the valve element to move; the limiting device is connected with the shell, and part of the limiting device can enter the first containing cavity and is connected with the driving piece located at the first locking position so as to limit the driving piece. The limiting device is arranged to limit the driving part located at the first locking position, the locking effect on the driving part located at the first locking position is achieved, and therefore the situation that the valve element moves, and consequently pipeline leakage is caused is avoided, and the better sealing effect is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of sealing devices, and specifically relates to a transmission valve and a vacuum system. Background Art

[0002] The transfer valve closes or opens the pipeline by moving the valve core through the drive. In some working conditions, the valve core will be affected by external forces when it is in the closed position. The drive that brings the valve core to the closed position will overcome the external force and keep the valve core in the closed position.

[0003] However, when the driving component fails, the valve core cannot independently overcome the external force and move, causing the closed pipeline to no longer be sealed and leak, or even change from a closed state to an open state. Summary of the invention

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

[0005] Technical solution, the present application provides a transmission valve, comprising:

[0006] A housing having a first accommodating cavity;

[0007] A valve core, wherein the valve core is inserted into the housing, and a portion of the valve core is disposed in the first accommodating chamber;

[0008] A driving member, the driving member is disposed in the first accommodating chamber, and the driving member is connected to the housing and the valve core respectively, the driving member has a first initial position and a first locking position, the driving member can perform a linear displacement, move between the first initial position and the first locking position, and drive the valve core to move;

[0009] A limiting device is connected to the shell, and a portion of the limiting device can enter the first accommodating cavity and be connected to the driving member located at the first locking position to limit the driving member.

[0010] In some embodiments, the driving member is sealed and connected to the shell, and the driving member can divide the first accommodating chamber into a first sub-chamber and a second sub-chamber; the shell has a first air hole and a second air hole, the first air hole passes through the shell and connects to the first sub-chamber, the second air hole passes through the shell and connects to the second sub-chamber, and part of the valve core is located in the first sub-chamber.

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

[0012] The limiting device comprises:

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

[0014] A reset member, wherein the reset member is fixedly connected to the housing, the reset member is connected to the limiting member, and 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 comprises:

[0016] A base portion, the base portion is fixedly connected to the shell;

[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, and the elastic part 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 air hole, the first channel communicates with the mounting groove and the first accommodating cavity, the third air hole communicates with the mounting groove and the first sub-cavity, and the mounting groove has a groove wall;

[0019] The limiting member comprises:

[0020] a limiting portion, the limiting portion being disposed through the first channel;

[0021] A moving part, wherein the moving part is connected to the limiting part, the moving part is inserted into the mounting groove, and the moving part is sealed and connected to the groove wall to form a second accommodating chamber, the second accommodating chamber is connected to the first channel and the third air hole, and the gas entering the second accommodating chamber can drive the moving part to move and drive the limiting part to exit the first accommodating chamber.

[0022] In some embodiments, the driving member has a guiding surface, so that when the driving member moves from the first initial position to the first locking position, the guiding 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 driving member has a limiting groove, and the portion of the limiting member located at the second locking position can be located in the limiting groove to limit the driving member.

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

[0025] The valve core comprises:

[0026] Valve stem;

[0027] a guide member, the guide member being connected to the valve stem, a portion of the guide member being disposed in the first guide groove, the guide member being movable along an extending direction of the first guide groove to guide the valve stem; the guide member being rotatably disposed in the first guide groove to enable the valve stem to rotate relative to the housing;

[0028] A guide member is connected to the valve stem, the guide member is arranged in the second guide groove, and the guide member can move 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 member is disposed in the clamping groove, and a portion of the driving member is disposed in the clamping groove.

[0030] In some embodiments, the transfer valve further includes an elastic member, wherein the elastic member is located between the driving member and the guide member and respectively connects the driving member and the guide member.

[0031] In some embodiments, the driving member comprises:

[0032] a first part, the first part being disposed in the first accommodating cavity;

[0033] A side wall, the side wall is sealed and connected to the housing, the side wall is connected to the first part, the side wall encloses a third accommodating cavity, a portion of the valve core is disposed in the third accommodating cavity, and a portion of the elastic member is located on the side wall and connected to the side wall;

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

[0035] Correspondingly, the present application also provides a vacuum system, comprising a transmission valve as described in any one of the above embodiments.

[0036] Beneficial effect: Compared with the prior art, the transmission valve provided in the embodiment of the present application includes a housing, a valve core, a driving member and a limiting device, wherein the housing has a first accommodating chamber; the valve core is inserted into the housing, and part of the valve core is arranged in the first accommodating chamber; the driving member is arranged in the first accommodating chamber, and the driving member is connected to the housing, the driving member has a first initial position and a first locking position, the driving member can perform linear displacement, move between the first initial position and the first locking position, and drive the valve core to move; the limiting device is connected to the housing, and part of the limiting device can enter the first accommodating chamber and connect with the driving member located in the first locking position to limit the driving member. The present application sets a limiting device to limit the driving member located in the first locking position, thereby achieving a locking effect on the driving member in the first locking position, thereby avoiding the movement of the valve core, causing pipeline leakage, and achieving a better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0038] Figure 1 A schematic diagram of the structure of a transmission valve provided in an embodiment of the present application;

[0039] Figure 2 A cross-sectional view of a transmission valve in one state provided by an embodiment of the present application;

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

[0041] Figure 4 A cross-sectional view of a transmission valve provided in an embodiment of the present application in another state;

[0042] Figure 5 A cross-sectional view of a driving member in a transmission valve provided in an embodiment of the present application;

[0043] Figure 6 A half-section view of a portion of a housing in a transmission valve provided in an embodiment of the present application;

[0044] Figure 7 for Figure 6 Detailed view of the center circle A;

[0045] Figure 8 A half-section view of a portion of a housing and a portion of a driving member in a transmission valve provided in an embodiment of the present application;

[0046] Fig. 9 The transmission valve provided in the embodiment of the present application is in a state Figure 8 Detailed view of the center circle B;

[0047] Fig.10The transmission valve provided in the embodiment of the present application is in another state Figure 8 Detailed view of the center circle B;

[0048] Fig.11 A cross-sectional view of a transmission valve provided by an embodiment of the present application in another state at another angle;

[0049] Fig.12 A schematic diagram of the structure of a transmission valve in some positions provided in an embodiment of the present application;

[0050] Fig.13 An exploded schematic diagram of a transfer valve in a partial position provided in an embodiment of the present application;

[0051] Fig.14 A schematic diagram of the structure of a valve plate in a transmission valve provided in an embodiment of the present application;

[0052] Fig.15 A side view of a valve plate in a transmission valve provided in an embodiment of the present application;

[0053] Fig.16 A schematic diagram of the structure of another valve plate in a transmission valve provided in an embodiment of the present application;

[0054] Fig.17 A side view of another valve plate in a transfer valve provided in an embodiment of the present application.

[0055] Reference numerals: 100-housing, 110-first accommodating chamber, 111-first sub-chamber, 112-second sub-chamber, 120-first air hole, 130-second air hole, 140-third air hole, 150-first through hole, 160-installation groove, 161-groove wall, 170-first guide groove, 180-second accommodating chamber, 191-first sealing member, 192-third sealing member, 193-shock absorber, 200-valve core, 210-valve stem, 211-clamping groove, 220-guide member, 230-guide member, 30 0-driving member, 310-guiding surface, 320-limiting groove, 330-first part, 340-side wall, 350-second part, 351-second guide groove, 360-third accommodating chamber, 370-second sealing member, 400-limiting device, 410-limiting member, 411-limiting part, 412-moving part, 420-resetting member, 421-base part, 422-elastic part, 500-elastic member, 600-valve plate, 610-fitting surface, 620-connecting surface, 630-first groove, 640-second groove. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0057] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0058] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application.

[0059] The transmission valve closes or opens the pipeline by moving the valve core 200 through the driving member 300. In some working conditions, the valve core 200 is affected by external force when it is in the closed position, and the driving member 300 that brings the valve core 200 to the closed position overcomes the external force to keep the valve core 200 in the closed position.

[0060] However, when the driving member 300 fails, the valve core 200 cannot independently overcome the external force and moves, causing the closed pipeline to no longer be sealed and leak, or even to change from a closed state to an open state.

[0061] For example, under some working conditions, when the driving member 300 drives the valve core 200, it overcomes gravity to do work. When the valve plate 600 closes and seals the pipeline, the driving member 300 becomes loose under the action of gravity, causing the valve core 200 to move, resulting in the closed pipeline no longer being sealed and leaking.

[0062] In order to solve the technical problem that the failure of the driving member 300 may cause the valve core 200 to move, thereby causing the pipeline to no longer be sealed and leak, the first embodiment of the present application provides a transmission valve, see Figure 1 The transmission valve includes a housing 100, a valve core 200, a driving member 300 and a limiting device 400. The housing 100 has a first accommodating chamber 110. The valve core 200 is inserted into the housing 100, and a portion of the valve core 200 is arranged in the first accommodating chamber 110. The driving member 300 is arranged in the first accommodating chamber 110, and the driving member 300 is respectively connected to the housing 100 and the valve core 200. The driving member 300 has a first initial position and a first locking position. The driving member 300 can perform linear displacement, move between the first initial position and the first locking position, and drive 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 accommodating chamber 110 and be connected to the driving member 300 located at the first locking position to limit the driving member 300.

[0063] It can be understood that the transmission valve also includes a valve plate 600, one end of the valve core 200 is connected to the driving member 300, and the other end of the valve core 200 is connected to the valve plate 600. The driving member 300 moves the valve core 200 and drives the valve plate 600 to move, so as to achieve the closing and opening of the pipeline by the valve plate 600.

[0064] Specifically, the driving member 300 can move in the first accommodating chamber 110 along the first direction X under the action of the driving force, so as to drive the valve core 200 to move along the first direction X, and when the driving member 300 is located at the first locking position, the valve core 200 drives the valve plate 600 to close the pipeline. The first direction X is the direction of the arrow X in the figure.

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

[0066] It can be understood that when the driving member 300 is located in the first locking position, the valve plate 600 closes the pipeline. At this time, the limiting device 400 limits the driving member 300. Even if the driving force is lost, since the limiting member 410 limits the driving member 300, external force cannot move the driving member 300. The valve core 200 and the valve plate 600 are also limited accordingly, and the pipeline will still remain in a closed state.

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

[0068] In some embodiments, the driving force for driving the driving member 300 is provided by a device capable of providing linear power, for example, any one of a variety of driving devices capable of providing linear power, such as a cylinder, an oil cylinder, a linear module, etc. In other embodiments, the driving member 300 is a piston in a cylinder, and gas is injected into one of the two sides of the driving member 300 in the first direction X to form a pressure difference on both sides of the driving member 300 in the first direction X to generate a driving force, so as to drive the driving member 300 to move along the first direction X.

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

[0070] In some embodiments, see Figure 2 , Figure 2 It is a cross-sectional view of the transmission valve when the driving member 300 is located at the first initial position. The driving member 300 is sealed and connected to the shell 100. The driving member 300 can divide the first accommodating chamber 110 into a first sub-chamber 111 and a second sub-chamber 112. The shell 100 has a first air hole 120 and a second air hole 130. The first air hole 120 passes through the shell 100 and is connected to the first sub-chamber 111. The second air hole 130 passes through the shell 100 and is connected to the second sub-chamber 112. Part of the valve core 200 is located in the first sub-chamber 111.

[0071] It can be understood that since the first air hole 120 is connected to the first sub-cavity 111, the second air hole 130 is connected to the second sub-cavity 112, and the driving member 300 is sealed and connected to the shell 100, injecting gas into either the first sub-cavity 111 or the second sub-cavity 112 can form a pressure difference on both sides of the driving member 300, thereby forming a driving force to move the driving member 300.

[0072] Since part of the valve core 200 is located in the first sub-cavity 111, and the valve core 200 is disposed in the housing 100, in order to improve the efficiency of injecting air into the first sub-cavity 111, in some embodiments, the housing 100 is sealed and connected to the valve core 200. Specifically, the housing 100 has a second through hole, the valve core 200 is disposed in the second through hole, and the transfer valve further includes a first sealing member 191, the first sealing member 191 is fixedly connected to the hole wall of the second through hole, and the first sealing member 191 is sealed and connected to the hole 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 driving member 300 includes a first portion 330 and a second sealing member 370. The valve core 200 is connected to the first portion 330. The second sealing member 370 is sleeved on the first portion 330 and can move with the first portion 330. The second sealing member 370 seals and connects the first portion 330 and the housing 100. In some embodiments, the second sealing member 370 is a sealing ring.

[0074] Specifically, the first air hole 120 and the second air hole 130 are respectively connected to joints to connect to the air pipe to achieve gas injection and extraction.

[0075] In the above embodiment, gas is injected into the first sub-chamber 111 or the second sub-chamber 112 to drive the driving member 300 to move, thereby reducing the volume of the transmission valve.

[0076] In some embodiments, see Figure 8 , Fig. 9 and Fig.10 ,in, Fig. 9 is a schematic diagram when the limiting member 410 is located at the second locking position, Fig.10 Schematic diagram of the limiting member 410 at the second initial position. The housing 100 has a first through hole 150 communicating with the first accommodating cavity 110; the limiting device 400 includes a limiting member 410 and a reset member 420, the limiting member 410 is passed through the first through hole 150, and the limiting member 410 has a second initial position and a second locking position; the reset member 420 is fixedly connected to the housing 100, the reset member 420 is connected to the limiting member 410, and 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.

[0077] Specifically, the stopper 410 can move 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 of the Y arrow in the figure.

[0078] Specifically, when the driving member 300 is located at 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 located at the first locking position.

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

[0080] It can be understood that the reset member 420 is used to drive the limit member 410 to move from the second initial position to the second locking position, which means that the reset member 420 can reset the limit member 410 in the second initial position to the second locking position. Specifically, in some embodiments, the reset member 420 can drive the limit member 410 to achieve reciprocating motion, that is, it can drive the limit 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 drive the limit member 410 to limit the driving member 300, and can also release the limit member 410 from the driving member 300; in other embodiments, the reset member 420 can only drive the limit 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 limit member 410 to limit the driving member 300, but cannot release the limit member 410 from the driving member 300.

[0081] In some embodiments, the reset member 420 is any one of a variety of drive devices such as a cylinder, an oil cylinder, a linear module, etc. that can provide linear power to drive the limit member 410 to move along the second direction Y and move between the second initial position and the second locking position. In other embodiments, the reset member 420 includes a spring that can push the limit member 410 from the second initial position to the second locking position.

[0082] In the above embodiment, by disposing the reset member 420 fixedly connected to the housing 100 , at least the limiting member 410 can be controlled to limit the driving member 300 at the first locking position.

[0083] In some embodiments, please refer again to Fig. 9 and Fig.10 The reset member 420 includes a base portion 421 and an elastic portion 422, the base portion 421 is fixedly connected to the shell 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 limit member 410, and the elastic portion 422 is used to drive the limit 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 accommodating cavity, and the base portion 421 is connected to the housing 100 and covers the first through hole 150. The elastic portion 422 is disposed in the fourth accommodating 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 stopper 410. When the stopper 410 is located at the second initial position, the elastic portion 422 generates elastic deformation, and the elastic portion 422 has a tendency to push the stopper 410 to the second locking position.

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

[0086] In the above embodiment, the elastic part 422 is provided to drive the elastic member 500 to move from the second initial position to the second locking position, and the limiting action can be achieved without an additional power source, so that the structure of the transmission valve in the above embodiment is more reasonable and the reliability is higher.

[0087] In some embodiments, please refer again to Fig. 9 and Fig.10 The shell 100 has a mounting groove 160 and a third air hole 140, the first channel connects the mounting groove 160 and the first accommodating chamber 110, the third air hole 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 portion 411 and a moving portion 412, and the limiting portion 411 is penetrated in the first channel; the moving portion 412 is connected to the limiting portion 411, the moving portion 412 is penetrated in the mounting groove 160, and the moving portion 412 is sealed and connected to the groove wall 161 to form a second accommodating chamber 180, the second accommodating chamber 180 is connected with the first channel and the third air hole 140, and the gas entering the second accommodating chamber 180 can drive the moving portion 412 to move and drive the limiting portion 411 to exit the first accommodating chamber 110.

[0088] Specifically, in some embodiments, see Fig. 9 and Fig.10 The stopper 410 further includes a fourth sealing member 413, which is sleeved on the moving portion 412 and can move with the moving portion 412. The fourth sealing member 413 seals and connects the moving portion 412 and the groove wall 161. Furthermore, the moving portion 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-chamber 111, the following changes occur inside the transmission valve in the above embodiment:

[0090] 1. The air pressure of the first sub-chamber 111 is greater than the air pressure of the second sub-chamber 112, and the driving member 300 has a tendency to move from the first locking 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 air hole 140 is connected to the first sub-cavity 111 and the second accommodating cavity 180, the air pressure in the second accommodating 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 portion 412 moves in a direction away from the driving member 300 to expand the second accommodating chamber 180 to balance the pressure difference. At the same time, the limiting portion 411 follows the moving portion 412 to move in a direction away from the driving member 300, that is, toward Fig. 9 and Fig.10 The middle right side moves, and the limiting member 410 leaves the second locking position;

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

[0094] 5. The driving member 300 moves toward the first initial position, i.e. Fig. 9 and Fig.10 The first sub-cavity 111 is moved downward to expand the first sub-cavity 111 and balance the pressure difference between the first sub-cavity 111 and the second sub-cavity 112.

[0095] In the above embodiment, the third air hole 140 is provided to connect the first sub-cavity 111 and the second accommodating cavity 180, so that when the driving member 300 needs to move from the first locking position to the first initial position, the limiting member 410 can also move from the second locking position to the second initial position, that is, only the same power source needs to be provided and only one action needs to be performed to release the limiting device 400 on the driving member 300 and to drive the driving member 300 to move. Specifically, when the transmission valve needs to open the pipeline, only one power source and one action are required to unlock the transmission valve and open the pipeline. Only one power source is required to make the structure of the transmission valve more reasonable; and only one action is required to unlock the transmission valve and open the pipeline, so that the transmission valve has the advantage of convenient operation while having a limiting function to obtain high reliability.

[0096] In some embodiments, see Figure 5 , Fig. 9 and Fig.10 The driving member 300 has a guide surface 310, so that when the driving 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 arranged to be inclined to the moving direction of the driving member 300 and the moving direction of the limiting member 410, that is, the guide surface 310 is arranged to be inclined to the first direction X and the second direction Y; more specifically, the guide surface 310 is a conical surface extending axially along the driving 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 driving member 300 is in the process of moving from the first initial position to the first locking position. The limiting member 410 is abutted against and pushes the limiting member 410 away from the second locking position along the second direction Y; in some embodiments, the first direction X is perpendicular to the second direction Y, and the guide surface 310 is a conical surface with a taper of 45°.

[0098] In the above embodiment, by setting the guide surface 310, the driving member 300 can be not affected by the limiting member 410 when moving to the first locking position, so that the limiting device 400 only needs to have the function of driving the limiting member 410 to move to the second locking position, and does not need to have the function of driving the limiting member 410 to move from the second locking position to the second initial position, so that the function and structure of the limiting device 400 are simplified, thereby improving the reliability of the transmission valve.

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

[0100] Specifically, in some embodiments, the limiting groove 320 is a hole that can accommodate the limiting portion 411; in other embodiments, the limiting groove 320 is arranged on the driving member 300 along the circumference of the driving member 300, so that during the installation process of the driving member 300, there is no need to specially set the angle of the driving member 300. The limiting portion 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] It is understandable that 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] It can be understood that, compared with the limiting member 410 being directly connected to the driving member 300 and limiting the driving member 300 by friction force, the limiting groove 320 is provided so that the limiting member 410 can extend into the limiting groove 320 to limit the driving member 300, which has a better effect; and compared with the solution in which the limiting member 410 is connected to the bottom of the driving member 300 to support the driving member 300 to 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 locking position to the first initial position, but also limit the driving member 300 from the first locking position to the direction away from the first initial position, and the limiting effect is better.

[0103] In the above embodiment, by providing the 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 driving 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 Fig.11The 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 can move along the extension 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. Figure 2 , Figure 3 , Figure 4 , Fig.12 and Fig.13 The guide member 230 is connected to the valve stem 210 , and the guide member 230 is disposed in the second guide groove 351 . The guide member 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 that are oppositely disposed, that is, the two first guide grooves 170 are oppositely disposed along the second direction Y.

[0106] Specifically, see Fig.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, see Figure 2 , Figure 3 , Figure 4 The second guide groove 351 is inclined along the 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 can move along the second direction Y under the guidance of the second guide groove 351, that is, Figure 2 , Figure 3 and Figure 4 , so that the side of the valve stem 210 close to the driving member 300 generates a sub-movement along the second direction Y when moving along the first direction X. In addition, because the guide member 220 can rotate in the first guide groove 170, when the side of the valve stem 210 close to the driving member 300 generates a sub-movement along the second direction Y, it can rotate around the guide member 220, so that the end of the valve stem 210 away from the driving member 300 generates a movement along the second direction Y, that is, the contact surface 610 of the valve plate 600 can be contacted with the sealing surface in the pipeline to seal and close the pipeline.

[0108] Specifically, the first guide groove 170 has a rotating surface at one end away from the driving member 300 along the first direction X. When part of the guide member 220 contacts the rotating surface, the rotating surface can limit the part of the guide member 220 from continuing to move along the first direction X in the direction away from the driving member 300, but the part of the guide member 220 can generate relative rotation with the rotating surface.

[0109] It can be understood that the friction between the portion of the guide member 220 and the rotating surface is a sliding friction. In order to reduce the friction between the portion of the guide member 220 and the rotating surface, a bearing is arranged outside the portion of the guide member 220 so that the friction between the portion of the guide member 220 and the rotating surface during relative rotation is converted into a rolling friction, thereby reducing the magnitude of the friction and making the valve stem 210 move more smoothly during rotation.

[0110] Similarly, see Fig.13 In some embodiments, when the guide member 230 moves in the second guide groove 351, friction is generated between the guide member 230 and the groove wall 161 of the second guide groove 351. The guide member 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 in the second guide groove 351 to convert the sliding friction force into rolling friction force, thereby reducing the magnitude of the friction force, and further making the movement of the valve stem 210 smoother when rotating.

[0111] It can be understood that the second guide groove 351 can extend along an arc line, and can also extend along a straight line inclined to the first direction X and the second direction Y.

[0112] In the above embodiment, the first guide groove 170 is provided to limit the linear movement of the valve stem 210, and the second guide groove 351 is provided to rotate the valve stem 210, so that the valve stem 210 can be tilted, and the valve plate 600 connected to the valve stem 210 is fitted with the sealing surface, thereby achieving a sealed connection between the valve plate 600 and the sealing surface.

[0113] In some embodiments, see Fig.14 and Fig.15The valve plate 600 has a fitting surface 610 and a connecting surface 620 which are separated from each other. The fitting surface 610 is used to fit with the sealing surface in the pipeline to close 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. The first groove 630 and the second groove 640 are arranged at intervals along the first direction X. The first groove 630 is located on the side of the second groove 640 away from the driving member 300. The transmission valve also includes an adjusting member, which is used to adjust the interval between the valve stem 210 and the valve plate 600. Some of the multiple adjusting members are arranged in the first groove 630, and the multiple adjusting members located in the first groove 630 are arranged in a direction perpendicular to the first direction and the second direction. Another part of the multiple adjusting members is arranged in the second groove 640, and the multiple adjusting members located 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 connects the valve stem 210 and the valve plate 600 respectively. Among them, the number of adjusting parts located in the second groove 640 is greater than the number of adjusting parts located 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 toward the first initial position, so that the fitting surface 610 of the tilted valve plate 600 can be parallel to and fit with the sealing surface.

[0114] Specifically, in some embodiments, the adjusting member is a gasket, and the number of the gaskets located in the second groove 640 is greater than the number of the gaskets located in the first groove 630 .

[0115] In other embodiments, please pay the monthly Fig.16 and Fig.17 The fitting surface 610 and the connecting surface 620 are arranged to be inclined. Specifically, the distance between the fitting surface 610 and the connecting surface 620 gradually increases from the first locking position to the first initial position, so that the fitting surface 610 of the inclined valve plate 600 can be parallel to and fit with the sealing surface.

[0116] Specifically, see Fig.17 The distance between the fitting surface 610 and the connecting surface 620 at the end away from the shell is d, and the distance between the fitting surface 610 and the connecting surface 620 at the end close to the shell is D, satisfying: d<D.

[0117] Since the valve stem 210 drives the valve plate 600 to move, the valve plate 600 will also rotate. In order to make the fitting surface 610 fit with the sealing surface in the pipeline, it is necessary to make the fitting surface 610 parallel to the sealing surface in the pipeline after the valve plate 600 rotates.

[0118] In some embodiments, see Fig.12 and Fig.13 The valve stem 210 has a clamping groove 211 , the guide member 230 is disposed in the clamping groove 211 , and a portion of the driving member 300 is disposed in the clamping groove 211 .

[0119] Specifically, the valve core 200 also includes a pin and a retaining spring. Portions of the guide member 230 and the driving member 300 are both arranged in the clamping groove 211, and the guide member 230 is arranged 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 member 230 at the same time in sequence to limit portions of the guide member 230 and the driving member 300 relative to the valve stem 210 perpendicular to the axial direction of the pin; clamping the retaining spring on the pin can prevent the pin from loosening in the circumferential direction.

[0120] It can be understood that the clamping groove 211 can limit the relative movement between the valve stem 210 and the driving member 300 along the second direction Y, thereby preventing the valve stem 210 and the driving member 300 from shaking along the second direction Y, so that the driving member 300 is more stable when driving the valve core 200 to move.

[0121] In some embodiments, please refer again to Figure 2 The transmission valve further includes an elastic member 500, which is located between the driving member 300 and the guide member 220 and respectively connects the driving member 300 and the guide member 220.

[0122] In the above embodiment, by setting the elastic member 500, a distance can be maintained between the valve stem 210 and the driving member 300 to prevent the guide member 230 from sliding into the other end of the second guide groove 351, so as to prevent the valve stem 210 from tilting prematurely before completing the linear displacement, so that the valve stem 210 can move more smoothly when performing the linear displacement along the first direction X.

[0123] In some embodiments, see Figure 5 The driving member 300 includes a first part 330, a side wall 340 and a second part 350, the first part 330 is arranged in the first accommodating chamber 110; the side wall 340 is sealingly connected to the shell 100, the side wall 340 is connected to the first part 330, the side wall 340 surrounds the third accommodating chamber 360, part of the valve core 200 is arranged in the third accommodating chamber 360, and part of the elastic member 500 is located on the side wall 340 and connected to the side wall 340; the second part 350 is arranged in the first accommodating chamber 110 and connected to the first part 330, and the second guide groove 351 is arranged in the second part 350.

[0124] In some embodiments, the driving member 300 further includes a fastener, which penetrates the first portion 330 along the first direction X and fixes the second portion 350 to the first portion 330 .

[0125] In some embodiments, the first portion 330 has a placement groove with an inner wall provided with an internal thread, and one end of the side wall 340 close to the first portion 330 has an external thread, and the side wall 340 is threadedly connected to the first portion 330 .

[0126] It can be understood that since the driving member 300 is sealed and connected to the shell 100, and the driving member 300 divides the first accommodating chamber 110 into a first sub-chamber 111 and a second sub-chamber 112; and since the side wall 340 is sealed and connected to the shell 100, the side wall 340 further divides the first sub-chamber 111 into a driving chamber and a sliding chamber, wherein the driving chamber is surrounded by the side wall 340, the shell 100 and the driving 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 is connected to the housing body, and the housing 100 further includes a third sealing member 192, the third sealing member 192 is sealingly connected to the protrusion and the side wall 340, so as to seal the protrusion and the side wall 340. In some embodiments, the third sealing member 192 is a sealing ring.

[0128] It can be understood that in the above embodiment, the first sub-chamber 111 is further divided into a drive chamber and a sliding chamber by the side wall 340, so that the gas only needs to enter the drive chamber with a smaller volume to drive the drive member 300 and the stop member 410, so that the pressure difference between the drive chamber and the second sub-chamber 112 is generated faster, and the action of the transmission valve can be more sensitive. In addition, by setting the side wall 340 that can only move linearly and not tilt to be connected to the housing 100 to separate the first sub-chamber 111, the reliability of the sealed connection can be better.

[0129] In some embodiments, when the driving member 300 is located at the first locking position, the first portion 330 is connected to the protruding portion in the first direction, that is, the protruding portion can limit the first portion 330 to an extreme position in the driving cavity.

[0130] In the above embodiment, the side wall 340 is provided to make the valve core 200 move more smoothly during the linear movement, and the side wall 340 is sealedly connected to the housing 100, so that the sensitivity of the transmission valve can also be improved.

[0131] In some embodiments, the housing 100 further includes a shock absorbing member 193 connected to the housing body to buffer the driving member 300 when the driving member 300 moves to the first initial position, so as to reduce the vibration of the transmission valve during operation.

[0132] Correspondingly, the present application also provides a vacuum system, comprising a transmission valve and a pipeline as described in any one of the above embodiments, wherein the transmission valve is connected to the pipeline, and the transmission valve is used to close or open the pipeline.

[0133] The above is a detailed introduction to a transmission valve and a vacuum system provided in the embodiments of the present application. Specific examples are used in the present application to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A transmission valve, characterized in that: include: A housing (100), wherein the housing (100) has a first accommodating chamber (110); a valve core (200), the valve core (200) being inserted into the housing (100), and a portion of the valve core (200) being disposed in the first accommodating chamber (110); A driving member (300), the driving member (300) being disposed in the first accommodating chamber (110), and the driving member (300) being connected to the housing (100) and the valve core (200) respectively, the driving member (300) having a first initial position and a first locking position, the driving member (300) being capable of performing a linear displacement, moving between the first initial position and the first locking position, and driving the valve core (200) to move; A limiting device (400), the limiting device (400) is connected to the housing (100), and a portion of the limiting device (400) can enter the first accommodating cavity (110) and connect to the driving member (300) located at the first locking position to limit the driving member (300).

2. The transfer valve according to claim 1, characterized in that The driving member (300) is sealedly connected to the shell (100), and the driving member (300) is capable of dividing the first accommodating chamber (110) into a first sub-chamber (111) and a second sub-chamber (112); the shell (100) has a first air hole (120) and a second air hole (130), the first air hole (120) passes through the shell (100) and is connected to the first sub-chamber (111), the second air hole (130) passes through the shell (100) and is connected to the second sub-chamber (112), and a part of the valve core (200) is located in the first sub-chamber (111).

3. The transfer valve according to claim 2, characterized in that The housing (100) has a first through hole (150) communicating with the first accommodating cavity (110); The limiting device (400) comprises: A limiting member (410), the limiting member (410) being passed through the first through hole (150), the limiting member (410) having a second initial position and a second locking position; A reset member (420), the reset member (420) is fixedly connected to the housing (100), the reset member (420) is connected to the limiting member (410), and 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 transfer valve according to claim 3, characterized in that The reset element (420) comprises: A base portion (421), the base portion (421) being fixedly connected to the housing (100); An elastic portion (422), one end of the elastic portion (422) is connected to the base portion (421), the other end of the elastic portion (422) is connected to the limiting member (410), and the elastic portion (422) is used to drive the limiting member (410) to move from the second initial position to the second locking position.

5. The transfer valve according to claim 3, characterized in that: The housing (100) has a mounting groove (160) and a third air hole (140), the first channel communicates with the mounting groove (160) and the first accommodating cavity (110), the third air hole (140) communicates with the mounting groove (160) and the first sub-cavity (111), and the mounting groove (160) has a groove wall (161); The limiting member (410) comprises: a limiting portion (411), wherein the limiting portion (411) is disposed through the first channel; A moving part (412), the moving part (412) being connected to the limiting part (411), the moving part (412) being arranged in the installation groove (160), and the moving part (412) being sealingly connected to the groove wall (161) to form a second accommodating chamber (180), the second accommodating chamber (180) being in communication with the first channel and the third air hole (140), and the gas entering the second accommodating chamber (180) can drive the moving part (412) to move and drive the limiting part (411) to exit the first accommodating chamber (110).

6. The transfer valve according to claim 3, characterized in that The driving member (300) has a guiding surface (310), so that when the driving member (300) moves from the first initial position to the first locking position, the guiding 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 transfer valve according to claim 3, characterized in that The driving member (300) has a limiting groove (320), and the portion of the limiting member (410) located at the second locking position can be located in the limiting groove (320) to limit the driving member (300).

8. The transfer valve according to claim 3, characterized in that The housing (100) has a first guide groove (170); the driving member (300) has a second guide groove (351); The valve core (200) comprises: Valve stem (210); a guide member (220), the guide member (220) being connected to the valve stem (210), a portion of the guide member (220) being arranged in the first guide groove (170), the guide member (220) being movable along an extension direction of the first guide groove (170) to guide the valve stem (210); the guide member (220) being rotatably arranged in the first guide groove (170) to enable the valve stem (210) to rotate relative to the housing (100); A guide member (230), the guide member (230) is connected to the valve stem (210), the guide member (230) is arranged in the second guide groove (351), and the guide member (230) can move along the extension direction of the second guide groove (351) to rotate the valve stem (210).

9. The transfer valve according to claim 8, characterized in that The valve stem (210) has a clamping groove (211), the guide member (230) is arranged in the clamping groove (211), and a part of the driving member (300) is arranged in the clamping groove (211).

10. The transfer valve according to claim 8, characterized in that The transmission valve further comprises an elastic member (500), wherein the elastic member (500) is located between the driving member (300) and the guiding member (220), and is respectively connected to the driving member (300) and the guiding member (220).

11. The transfer valve according to claim 10, characterized in that The driving member (300) comprises: A first portion (330), the first portion (330) being disposed in the first accommodating cavity (110); a side wall (340), the side wall (340) being sealingly connected to the housing (100), the side wall (340) being connected to the first portion (330), the side wall (340) enclosing a third accommodating chamber (360), a portion of the valve core (200) being disposed in the third accommodating chamber (360), and a portion of the elastic member (500) being located on the side wall (340) and connected to the side wall (340); The second part (350) is disposed in the first accommodating 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: Comprising a transfer valve as claimed in any one of claims 1-11.

Images