Control structure and valve device

Abstract

The invention provides a control structure and a valve device, and relates to the technical field of production and manufacturing. The control structure comprises an elastic assembly, a sealing piece and a driving piece. The first end of the driving piece is connected with the controlled piece, and the second end of the driving piece is connected with the driver; the driving part is used for controlling the controlled part to perform axial movement and rotary movement perpendicular to the axial direction based on the driving force provided by the driving machine; wherein the axial direction is the extension direction of a connecting line of the first end and the second end of the driving part; the elastic assembly is arranged around the driving piece and is in contact with the sealing piece; the elastic assembly is used for moving based on axial movement or rotary movement of the driving part; the sealing piece is used for sealing the inner cavity; the driving piece and the elastic assembly are arranged in the inner cavity. According to the invention, the elastic assembly and the driving piece perform synchronous axial movement or rotary movement, so that the friction force borne by the sealing piece for sealing the internal cavity is reduced, the service life of the sealing piece is prolonged, and the sealing effect of the sealing piece is optimized.

Description

Technical Field

[0001] The present application relates to the field of production and manufacturing technology, and in particular to a control structure and a valve device. Background Art

[0002] In current valve devices, in order to seal the internal cavity of the valve device and reduce the adverse effects of the material at the valve port on the internal cavity of the valve device, a corresponding metal or rubber sealing structure is usually provided. For example, a corresponding sealing ring or other sealing structure is provided on the transmission shaft that controls the movement of the valve plate to ensure the sealing of the internal cavity of the valve device when the transmission shaft moves.

[0003] However, due to the movement characteristics of some moving structures, for example, the transmission shaft needs to drive the valve plate to perform axial movement and vertical axial rotational movement to achieve the opening and closing control of the valve port, therefore, the sealing structure in contact with the transmission shaft needs to withstand friction in multiple movement directions. During the use of the valve device, long-term friction will cause the loss of the sealing structure and reduce the service life of the sealing structure. In addition, long-term friction will also cause leakage at the sealing point and other unfavorable conditions, resulting in poor sealing effect of the internal cavity of the current valve device, which cannot meet the current sealing requirements. Summary of the invention

[0004] In view of this, an object of the embodiments of the present application is to provide a control structure and a valve device to improve the problem of poor sealing effect existing in the prior art.

[0005] In order to solve the above problems, in a first aspect, an embodiment of the present application provides a control structure, the control structure comprising: an elastic component, a sealing component and a driving component;

[0006] The first end of the driving member is connected to the controlled member, and the second end of the driving member is connected to the driving machine;

[0007] The driving member is used to control the controlled member to perform axial movement and rotational movement perpendicular to the axial direction based on the driving force provided by the driving machine; wherein the axial direction is the extension direction of the line connecting the first end and the second end of the driving member;

[0008] The elastic component is arranged around the driving member, and the elastic component is in contact with the sealing member;

[0009] The elastic component is used for moving based on the axial movement or the rotational movement of the driving member; the sealing member is used for sealing the internal cavity; wherein the driving member and the elastic component are arranged in the internal cavity.

[0010] In the above implementation process, the two ends of the driving member are respectively connected to the external controlled member and the driving machine, so as to perform axial movement and rotational movement according to the driving force provided by the driving machine, thereby controlling the controlled member to perform corresponding axial movement and rotational movement, and realizing the corresponding control function. In addition, considering the movement characteristics of the driving member, in order to reduce the friction force on the seal that seals the internal cavity where the driving member is located, a corresponding elastic component can be arranged around the driving member, and the elastic component is in contact with the seal. The elastic component can perform synchronous axial movement or rotational movement with the driving member to reduce the friction force on the seal that seals the elastic component and the internal cavity where the driving member is located, thereby effectively reducing the loss of the seal, extending the service life of the seal, reducing the leakage and other adverse conditions generated at the sealing part of the internal cavity, optimizing the sealing effect of the seal on the internal cavity, and meeting the current various sealing requirements.

[0011] Optionally, the elastic component comprises: a first end cap and a first elastic tube;

[0012] The first end cap is connected to the first end of the first elastic tube, and the second end of the first elastic tube is fixedly connected to the driving member;

[0013] The first end cover and the first elastic tube are arranged around the driving member;

[0014] The sealing member is disposed in a first sealing groove between the first end cover and the outer shell;

[0015] When the driving member performs the rotational motion, based on the fixed connection between the first end cover and the second end of the first elastic tube and the driving member, the first elastic tube and the first end cover remain relatively stationary with the driving member.

[0016] In the above implementation process, the elastic component may include a corresponding first elastic tube and a first end cap for fixing the first end of the first elastic tube. The second end of the first elastic tube is fixedly connected to the driving member to achieve a corresponding structural connection. The first end cap and the first elastic tube are arranged around the driving member to achieve a corresponding motion function without affecting the normal activity of the driving member, and the sealing member is arranged in the first sealing groove between the first end cap and the external shell to seal the internal cavity accordingly. When the driving member performs a rotational motion, due to the fixed connection between the first end cap and the second end of the first elastic tube and the driving member, the driving member can drive the first elastic tube and the first end cap to perform synchronous rotational motion, that is, the first elastic tube and the first end cap remain relatively stationary with the driving member in the case of rotational motion, and the sealing member is only affected by the friction force of the first end cap in the rotation direction, so as to effectively reduce the friction force on the sealing member, reduce the loss of the sealing member, and extend the service life of the sealing member.

[0017] Optionally, the elastic component further comprises: a first fixing member;

[0018] The first end cover is provided with a first groove, and the first fixing member is sleeved on the first end cover based on the first groove;

[0019] When the driving member performs the axial movement, the first fixing member is used to limit the movement of the first end cover in the axial direction, and the first end cover is used to limit the movement of the first end of the first elastic tube in the axial direction.

[0020] In the above implementation process, in order to limit the axial movement of the elastic component and reduce the frictional influence of the axial movement on the seal, a corresponding first fixing member can also be provided in the elastic component, and the first fixing member is sleeved on the first end cover through a first groove provided on the first end cover. The first fixing member can limit the axial movement of the first end cover when the driving member moves axially, thereby limiting the axial movement of the first end of the first elastic tube, so that the first end cover and the first end of the first elastic tube do not move when the driving member moves axially, that is, when the driving member moves axially, the first end cover and the first end of the first elastic tube do not move with the driving member, but are fixed at the original position by the first fixing member. Therefore, when the driving member moves axially, the seal and the stationary first end cover remain relatively stationary, and the seal is only affected by the frictional force in the rotational direction, and is not affected by the frictional force in the axial direction, which effectively reduces the frictional force on the seal, reduces the loss of the seal, and prolongs the service life of the seal.

[0021] Optionally, the control structure further comprises: a slide groove and a sliding member;

[0022] The slide groove is arranged along the axial direction on the connection surface where the first end cover is connected to the driving member;

[0023] The first end cover and the driving member are slidably connected via the sliding groove and the sliding member;

[0024] When the driving member performs the axial movement, based on the sliding connection between the sliding member and the sliding groove, the first elastic tube generates elastic deformation, and the second end of the first elastic tube and the driving member remain relatively still.

[0025] In the above implementation process, when the driving member moves axially, the first end cap and the first end of the first elastic tube fixed by the first end cap do not move accordingly with the movement of the driving member. Therefore, considering the fixing characteristics between the first elastic tube, the first end cap and the driving member, in order to enable the driving member to move axially normally without affecting the first elastic tube and the first end cap, the control structure may further include a corresponding slide groove and a sliding member, the slide groove is axially arranged on the connection surface of the first section height connected to the driving member, the first end cap is connected to the driving member through the sliding member, and the sliding member and the sliding groove are combined to realize the sliding connection between the first end cap and the driving member. When the driving member moves axially, the sliding member can move in the slide groove based on the movement of the driving member in the axial direction, so as to move axially without affecting the first end cap and the first end of the first elastic tube, and the driving member can also drive the second end of the first elastic tube to move axially synchronously, and the first elastic tube can produce elastic deformation to adapt to the situation that its first end is stationary and the second end moves. The elastic deformation generated by the sliding connection and the first elastic tube can provide a suitable movable range for the axial movement of the driving member, so that the first end cover remains stationary when the driving member moves axially, thereby reducing the influence of friction force in the axial direction on the sealing member.

[0026] Optionally, the first elastic tube comprises a bellows structure.

[0027] In the above implementation process, the first elastic tube may include various types of bellows structures to provide corresponding elastic deformation space for axial movement.

[0028] Optionally, the elastic component comprises: a second end cap, a third end cap and a second elastic tube;

[0029] The second end cap is connected to the first end of the second elastic tube, and the third end cap is connected to the second end of the second elastic tube;

[0030] The second end cover and the third end cover are fixed on the driving member;

[0031] The second end cover, the third end cover and the second elastic tube are arranged around the driving member;

[0032] The sealing member is disposed in a second sealing groove between the second end cover and the driving member;

[0033] When the driving member performs the axial movement, based on the fixed connection between the second end cover and the third end cover and the driving member, the second end cover, the third end cover, the second elastic tube and the sealing member remain relatively still with the driving member.

[0034] In the above implementation process, the elastic component may include a corresponding second elastic tube, and a second end cap and a third end cap for fixing the first end and the second end of the second elastic tube. The second end cap and the third end cap are fixed on the driving member, and the second end cap, the third end cap and the second elastic tube are arranged around the driving member to realize the corresponding movement function without affecting the normal activity of the driving member, and the sealing member is arranged in the second sealing groove between the second end cap and the driving member to seal the internal cavity accordingly. When the driving member moves axially, due to the fixed connection between the second end cap, the third end cap and the driving member, the driving member can drive the second end cap, the third end cap and the second elastic tube fixed in the two end caps to perform synchronous axial movement, that is, the second end cap, the third end cap and the second elastic tube remain relatively stationary with the driving member in the axial movement, and the sealing member is only affected by the friction force of the driving member in the rotation direction, so as to effectively reduce the friction force on the sealing member, reduce the loss of the sealing member, and extend the service life of the sealing member.

[0035] Optionally, the elastic component further comprises: a second fixing member;

[0036] The driving member is provided with a second groove, and the second fixing member is sleeved on the driving member based on the second groove;

[0037] The second end cover and the third end cover are disposed on the driving member in a surrounding manner through the second fixing member;

[0038] When the driving member performs the rotational motion, the second fixing member is used to limit the rotation of the second end cover and the third end cover, and the second end cover and the third end cover are used to limit the rotation of the second elastic tube.

[0039] In the above implementation process, in order to limit the rotational movement of the elastic component and reduce the friction effect on the seal caused by the rotation of the second end cover, a corresponding second fixing member can also be provided in the elastic component, and the second fixing member is mounted on the driving member through a second groove provided on the driving member. In addition, the second fixing member can surround and fix the second end cover and the third end cover on the driving member to limit the movement of the second end cover and the third end cover in the rotation direction when the driving member rotates, thereby limiting the rotational movement of the second end cover, the third end cover and the second elastic tube, so that the second end cover, the third end cover and the second elastic tube do not move when the driving member rotates, that is, when the driving member rotates, the second end cover, the third end cover and the second elastic tube do not move with the driving member, but are fixed at the original position by the second fixing member. Therefore, when the driving member rotates, the sealing member and the stationary second end cover remain relatively stationary, and the sealing member is only affected by the friction force in the rotation direction of the driving member, and will not be affected by the friction force in the rotation direction of the second end cover, thereby effectively reducing the friction force on the sealing member, reducing the loss of the sealing member, and extending the service life of the sealing member.

[0040] Optionally, the second elastic tube comprises a multi-layer hydraulic bellows structure.

[0041] In the above implementation process, considering the friction between the second elastic tube and the driving member when the driving member rotates, the second elastic tube may include multiple types of multi-layer hydraulic bellows structures to provide corresponding deformation torque for the rotational movement, thereby reducing the adverse effects of friction on the second elastic tube.

[0042] Optionally, the first fixing member or the second fixing member comprises a self-lubricating annular member.

[0043] In the above implementation process, the first fixing member or the second fixing member may include various types of self-lubricating annular members to reduce the friction between the fixing member and the driving member, thereby improving the smoothness of the axial movement and rotational movement of the driving member.

[0044] In a second aspect, an embodiment of the present application further provides a valve device, the valve device comprising: a valve plate, a driving machine and any one of the control structures described above;

[0045] The first end of the control structure is connected to the valve plate, and the second end of the control structure is connected to the driving machine;

[0046] The driving machine is used to provide driving force for the control structure;

[0047] The control structure is used to control the valve plate to perform axial movement and rotational movement perpendicular to the axial direction based on the driving force; wherein the axial direction is the direction between the first end and the second end of the driving member in the control structure.

[0048] In the above implementation process, the controlled part and the driving machine are connected respectively at both ends of the control structure to perform axial movement and rotational movement according to the driving force provided by the driving machine, thereby controlling the controlled part to perform corresponding axial movement and rotational movement to achieve the corresponding control function.

[0049] In summary, the elastic component and the driving member perform synchronous axial or rotational motion to reduce the friction force on the seal that seals the internal cavity, thereby extending the service life of the seal and optimizing the sealing effect of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 A schematic cross-sectional view of a first control structure provided in an embodiment of the present application;

[0052] Figure 2 A schematic cross-sectional view of a second control structure provided in an embodiment of the present application;

[0053] Figure 3 A schematic cross-sectional view of a third control structure provided in an embodiment of the present application;

[0054] Figure 4 A schematic diagram of the structure of a valve device provided in an embodiment of the present application.

[0055] Icons: 100-control structure; 200-valve plate; 300-driving machine; 110-elastic component; 120-seal; 130-driving member; 1111-first end cover; 1112-first elastic tube; 1113-first fixing member; 1114-slide groove; 1115-sliding member; 1121-second end cover; 1122-third end cover; 1123-second elastic tube; 1124-second fixing member; F1-axial direction; F2-rotational direction. DETAILED DESCRIPTION

[0056] The technical scheme in the embodiments of the present application will be clearly and completely described 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 of the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the embodiments of the present application.

[0057] Due to the movement characteristics of some moving structures, for example, the transmission shaft needs to drive the valve plate to perform axial movement and vertical axial rotational movement to achieve the opening and closing control of the valve port. Therefore, the sealing structure in contact with the transmission shaft needs to withstand friction in multiple movement directions. For example, when the transmission shaft performs rotational movement and axial movement, the sealing structure will be subjected to corresponding friction, etc. During the use of the valve device, long-term friction will cause the loss of the sealing structure and reduce the service life of the sealing structure. In addition, long-term friction will also cause leakage at the sealing point and other unfavorable conditions, resulting in poor sealing effect of the internal cavity of the current valve device, which cannot meet the current sealing requirements.

[0058] In order to solve the above problems, an embodiment of the present application provides a control structure, which is arranged in a corresponding valve device, and can effectively extend the service life of the sealing structure and optimize the sealing effect of the internal cavity.

[0059] See also Figure 1 , Figure 1 This is a schematic cross-sectional structure diagram of a first control structure provided in an embodiment of the present application. The control structure may include: an elastic component 110 , a sealing component 120 and a driving component 130 .

[0060] The first end of the driving member 130 is connected to the controlled member, and the second end of the driving member 130 is connected to the driving machine. The driving member 130 is used to control the controlled member to perform axial movement and rotational movement perpendicular to the axial direction F1 based on the driving force provided by the driving machine. The two ends of the driving member 130 are respectively connected to the external controlled member and the driving machine to perform axial movement and rotational movement according to the driving force provided by the driving machine, thereby controlling the controlled member to perform corresponding axial movement and rotational movement, and realizing the corresponding control function.

[0061] Optionally, the driving member 130 can be a corresponding motion shaft, transmission shaft, worm gear, lead screw, or other device that can move in multiple directions. The axial direction F1 is consistent with the extension direction of the central axis of the driving member 130. The controlled member can be a related device that needs to be driven by the driving member 130 to move. For example, in a valve device, the controlled member can be a structure such as a valve plate that closes and opens the valve port, and the driving machine can be various types of devices that provide driving force, such as a motor, a transmission belt, a worm gear, a cylinder, a swing arm, etc.

[0062] It should be noted that the axial direction F1 is the extension direction of the line connecting the first end and the second end of the driving member 130. For example, in the valve device, the axial direction F1 may include a first direction in which the driving member 130 controls the valve plate to press against the valve port, and a second direction in which the driving member 130 controls the valve plate to move away from the valve port, the second direction being opposite to the second direction, and the rotation direction F2 may be a third direction in which the driving member 130 controls the valve plate to rotate into the valve port area, and a fourth direction in which the driving member 130 controls the valve plate to rotate away from the valve port area.

[0063] Optionally, considering the motion characteristics of the driving member 130, in order to reduce the friction force on the sealing member 120 that seals the internal cavity where the driving member 130 is located, the elastic component 110 is arranged around the driving member 130, and the elastic component 110 is in contact with the sealing member 120. The elastic component 110 is used to move based on the axial movement or rotational movement of the driving member 130; the sealing member 120 is used to seal the internal cavity; wherein the driving member 130 and the elastic component 110 are arranged in the internal cavity.

[0064] For example, the seal 120 may be disposed at a plurality of sealing surfaces between the elastic component 110 and the external housing. The elastic component 110 may include a plurality of structures capable of elastic deformation, such as a rubber ring, a bellows, a spring, and the like.

[0065] It should be noted that, since the valve device may include multiple different internal cavities, the seal 120 mentioned in the embodiment of the present application is a sealing structure for sealing the internal cavity including the drive member 130 and the elastic component 110. The valve device may also include multiple sealing structures for sealing other internal cavities, such as multiple static sealing rings, static sealing rings, etc., to reduce the adverse conditions such as melting and corrosion caused by high-temperature or corrosive substances entering the internal cavity when the valve port is opened. For example, the seal 120 may include devices of various materials and structures such as metal sealing rings and rubber sealing rings.

[0066] exist Figure 1 In the illustrated embodiment, the elastic component 110 is capable of performing synchronous axial movement or rotational movement with the driving member 130 to reduce the friction force exerted on the seal 120 that seals the internal cavity where the elastic component 110 and the driving member 130 are located, thereby effectively reducing the wear of the seal 120, extending the service life of the seal 120, reducing leakage and other adverse conditions generated at the sealing point of the internal cavity, optimizing the sealing effect of the seal 120 on the internal cavity, and meeting various current sealing requirements.

[0067] Optionally, see Figure 2 , Figure 2A schematic cross-sectional structure diagram of a second control structure provided in an embodiment of the present application, wherein the elastic component 110 may include: a first end cap 1111 and a first elastic tube 1112. The first end cap 1111 is connected to the first end of the first elastic tube 1112, and the second end of the first elastic tube 1112 is fixedly connected to the driving member 130. The elastic component 110 may include a corresponding first elastic tube 1112, and a first end cap 1111 for fixing the first end of the first elastic tube 1112. The second end of the first elastic tube 1112 is fixedly connected to the driving member 130 to achieve a corresponding structural connection.

[0068] Optionally, the first elastic tube 1112 may include multiple types of bellows structures, and the first end cover 1111 may be a corresponding bellows cover with a fixing function. Since the first end cover 1111 is arranged around the driving member 130, the first end cover 1111 may also be arranged as a corresponding annular cover structure.

[0069] Optionally, corresponding retaining ring structures, retaining rings for holes and other structures may be provided, and the first end cover 1111 may be wrapped around the surface of the driving member 130 . Multiple devices may be connected by structures such as screws.

[0070] The first end cover 1111 and the first elastic tube 1112 are arranged around the driving member 130, and the sealing member 120 is arranged in the first sealing groove between the first end cover 1111 and the outer shell. The first end cover 1111 and the first elastic tube 1112 are arranged around the driving member 130 to achieve the corresponding movement function without affecting the normal activity of the driving member 130, and the sealing member 120 is arranged in the first sealing groove between the first end cover 1111 and the outer shell to perform corresponding sealing on the internal cavity.

[0071] It should be noted that, when the driving member 130 performs a rotational motion, the first elastic tube 1112 and the first end cap 1111 are fixedly connected to the driving member 130, and the second end of the first elastic tube 1112 and the first end cap 1111 remain relatively still with the driving member 130. When the driving member 130 performs a rotational motion, due to the fixed connection between the first end cap 1111 and the second end of the first elastic tube 1112 and the driving member 130, the driving member 130 can drive the first elastic tube 1112 and the first end cap 1111 to perform a synchronous rotational motion, that is, the first elastic tube 1112 and the first end cap 1111 remain relatively still with the driving member 130 in the rotational motion, and the sealing member 120 is only affected by the friction force of the first end cap 1111 in the rotation direction F2, so as to effectively reduce the friction force on the sealing member 120, reduce the loss of the sealing member 120, and extend the service life of the sealing member 120.

[0072] It should be noted that the relative stillness mentioned in the present application refers to the relative stillness of two devices in their motion range, rather than absolute stillness in physics.

[0073] Optionally, see Figure 2 In order to limit the movement of the elastic component 110 in the axial direction F1 and reduce the friction effect of the axial movement on the seal 120, the elastic component 110 may further include: a first fixing member 1113. A first groove is provided on the first end cover 1111, and the first fixing member 1113 is sleeved on the first end cover 1111 based on the first groove.

[0074] For example, the first fixing member 1113 can be configured as a corresponding split retaining ring structure to facilitate installation and removal. The first groove on the first end cover 1111 can be configured according to the actual size of the first fixing member 1113, or the first fixing member 1113 can be designed according to the surface parameters of the first end cover 1111 to be directly sleeved on the surface of the first end cover 1111.

[0075] It should be noted that, when the driving member 130 moves axially, the first fixing member 1113 is used to limit the movement of the first end cover 1111 in the axial direction F1, and the first end cover 1111 is used to limit the movement of the first end of the first elastic tube 1112 in the axial direction F1. The first fixing member 1113 is sleeved on the first end cover 1111 through a first groove provided on the first end cover 1111. The first fixing member 1113 can limit the movement of the first end cover 1111 in the axial direction F1 when the driving member 130 moves axially, thereby limiting the movement of the first end of the first elastic tube 1112 in the axial direction F1, so that the first end cover 1111 and the first end of the first elastic tube 1112 remain stationary when the driving member 130 moves axially, that is, when the driving member 130 moves axially, the first end cover 1111 and the first end of the first elastic tube 1112 do not move with the driving member 130, but are fixed at the original position by the first fixing member 1113. Therefore, when the driving member 130 moves axially, the sealing member 120 and the stationary first end cover 1111 remain relatively stationary, and the sealing member 120 is only affected by the friction force in the rotation direction F2, and is not affected by the friction force in the axial direction F1, thereby effectively reducing the friction force on the sealing member 120, reducing the loss of the sealing member 120, and extending the service life of the sealing member 120.

[0076] Optionally, the first fixing member 1113 can be disposed between the first end cover 1111 and the outer shell, and abut against the sealing member 120, so as to fix the first fixing member 1113 through the outer shell, and restrict the movement of the first end cover 1111 through the first fixing member 1113. When the driving member 130 performs rotational movement, since the first fixing member 1113 and the first end cover 1111 are both annular structures, the first fixing member 1113 does not restrict the rotational movement, and the first end cover 1111 can drive the connected first elastic tube 1112 to perform synchronous rotational movement with the driving member 130 under the drive of the driving member 130. When the driving member 130 performs axial movement, due to the restriction of the first fixing member 1113 on the first end cover 1111, the first end cover 1111 and the first end of the first elastic tube 1112 connected to the first end cover 1111 can not move with the axial movement of the driving member 130.

[0077] Optionally, see Figure 2 Since the first end cover 1111 and the first end of the first elastic tube 1112 fixed to the first end cover 1111 do not move accordingly with the movement of the driving member 130 when the driving member 130 moves axially, considering the fixing characteristics between the first elastic tube 1112, the first end cover 1111 and the driving member 130, in order to enable the driving member 130 to move axially normally without affecting the first elastic tube 1112 and the first end cover 1111, the control structure may also include: a slide groove 1114 and a sliding member 1115.

[0078] The slide groove 1114 is arranged on the connection surface of the first end cover 1111 and the driving member 130 along the axial direction F1. The first end cover 1111 and the driving member 130 are slidably connected through the slide groove 1114 and the sliding member 1115. The slide groove 1114 is arranged on the connection surface of the first section height connected to the driving member 130 along the axial direction F1, and the first end cover 1111 and the driving member 130 are connected through the sliding member 1115, so that the sliding connection between the first end cover 1111 and the driving member 130 is realized through the combination of the sliding member 1115 and the slide groove 1114.

[0079] Optionally, the sliding member 1115 may include corresponding sliding keys, sliding wheels and other structures. The length of the sliding groove 1114 in the axial direction F1 can be determined according to the range of motion of the driving member 130 for axial movement. For example, when the range of motion is 10 cm, the length of the sliding groove 1114 can be set to a length greater than or equal to 10 cm, such as 11 cm, 12 cm, etc.

[0080] Optionally, in order to improve the stability of the sliding connection, multiple groups of sliding grooves 1114 and corresponding sliding members 1115 may be provided.

[0081] It should be noted that, when the driving member 130 performs axial movement, based on the sliding connection between the sliding member 1115 and the slide groove 1114, the first elastic tube 1112 generates elastic deformation, and the second end of the first elastic tube 1112 remains relatively stationary with the driving member 130. When the driving member 130 performs axial movement, the sliding member 1115 can move in the slide groove 1114 based on the movement of the driving member 130 in the axial direction F1, thereby performing axial movement without affecting the first end cover 1111 and the first end of the first elastic tube 1112, and the driving member 130 can also drive the second end of the first elastic tube 1112 to perform axial movement synchronously, and the first elastic tube 1112 can generate elastic deformation to adapt to the situation where its first end is stationary and the second end moves. The elastic deformation generated by the sliding connection and the first elastic tube 1112 can provide a suitable movable range for the axial movement of the driving member 130, so that the first end cover 1111 remains stationary when the driving member 130 moves axially, thereby reducing the influence of the friction force in the axial F1 direction on the sealing member 120.

[0082] It should be noted that, since the first end of the first elastic tube 1112 can move along with the driving member 130 during axial movement, the bellows structure of the first elastic tube 1112 can provide a corresponding elastic deformation space for the axial movement.

[0083] Taking the valve device, in which the driving machine is a cylinder and a swing arm as an example, the action process from the closed state to the open state of the valve port may include: the valve port is in the closed state, the four driving cylinders exhaust gas, drive the driving member 130 to drive the valve plate to separate from the valve seat of the valve port, the rodless chamber of the cylinder takes in gas, pushes the piston rod to extend, the piston rod pushes the driving member 130 to move axially, and the valve plate is separated from the valve seat. During the movement, the first elastic tube 1112 changes from a tensile state to a compressed state, the cylinder drives the swing arm to rotate clockwise, the driving member 130 follows the clockwise rotation, and the sliding member 1115 drives the first end cover 1111 and the driving member 130 to rotate synchronously to prevent the first elastic tube 1112 from being subjected to torque, causing the weld between the first elastic tube 1112 and the first end cover 1111 or the driving member 130 to crack and cause leakage. The valve plate is driven by the driving member 130 to rotate out, and the valve opens. The action process from the closed state to the open state of the valve port may include: the valve is in the open state, the cylinder drives the swing arm to rotate counterclockwise, thereby driving the driving member 130 to rotate counterclockwise, and the sliding member 1115 drives the first end cover 1111 and the driving member 130 to rotate synchronously to prevent the first elastic tube 1112 from being subjected to torque, causing the weld between the first elastic tube 1112 and the first end cover 1111 or the driving member 130 to crack and cause leakage. The valve plate is driven by the driving member 130 to rotate back to the valve port position. The four driving cylinders have air intake in the rodless chamber and exhaust in the rod chamber. The driving member 130 presses the valve plate under the action of the cylinder. At the same time, the cylinder (with a rod chamber intake and exhaust in the rodless chamber) drives the driving member 130 to retract, and the metal elastic sealing ring between the valve plate and the valve seat sealing surface is compressed, and the valve is closed.

[0084] Optionally, see Figure 3 , Figure 3 A schematic diagram of a cross-sectional structure of a third control structure provided in an embodiment of the present application, wherein the elastic component 110 may include: a second end cap 1121, a third end cap 1122, and a second elastic tube 1123. The second end cap 1121 is connected to the first end of the second elastic tube 1123, the third end cap 1122 is connected to the second end of the second elastic tube 1123, and the second end cap 1121 and the third end cap 1122 are fixed to the driving member 130. The elastic component 110 may include a corresponding second elastic tube 1123, and a second end cap 1121 and a third end cap 1122 that fix the first end and the second end of the second elastic tube 1123. The second end cap 1121 and the third end cap 1122 are fixed to the driving member 130.

[0085] Optionally, the second elastic tube 1123 may include a multi-layer hydraulic bellows structure, and the second end cover 1121 and the third end cover 1122 may be corresponding bellows covers with fixing functions and the like. Since the second end cover 1121 and the third end cover 1122 are arranged around the driving member 130, the second end cover 1121 and the third end cover 1122 may also be arranged as corresponding annular cover structures.

[0086] Optionally, corresponding retaining ring structures, retaining rings for holes and other structures may be provided, and the second end cover 1121 and the third end cover 1122 may be wrapped around the surface of the driving member 130 . Multiple components may be connected by structures such as screws.

[0087] The second end cover 1121, the third end cover 1122 and the second elastic tube 1123 are arranged around the driving member 130, and the sealing member 120 is arranged in the second sealing groove between the second end cover 1121 and the driving member 130. The second end cover 1121, the third end cover 1122 and the second elastic tube 1123 are arranged around the driving member 130 to realize the corresponding motion function without affecting the normal activity of the driving member 130, and the sealing member 120 is arranged in the second sealing groove between the second end cover 1121 and the driving member 130 to perform corresponding sealing on the internal cavity.

[0088] It should be noted that when the driving member 130 performs axial movement, based on the fixed connection between the second end cover 1121 and the third end cover 1122 and the driving member 130, the second end cover 1121, the third end cover 1122, the second elastic tube 1123 and the sealing member 120 and the driving member 130 remain relatively stationary. When the driving member 130 performs axial movement, due to the fixed connection between the second end cover 1121, the third end cover 1122 and the driving member 130, the driving member 130 can drive the second end cover 1121, the third end cover 1122 and the second elastic tube 1123 fixed in the two end covers to perform synchronous axial movement, that is, the second end cover 1121, the third end cover 1122 and the second elastic tube 1123 and the driving member 130 remain relatively still during axial movement, and the sealing member 120 is only affected by the friction force of the driving member 130 in the rotation direction F2, so as to effectively reduce the friction force on the sealing member 120, reduce the loss of the sealing member 120, and extend the service life of the sealing member 120.

[0089] Optionally, see Figure 3, wherein, in order to limit the rotational movement of the elastic component 110 and reduce the frictional influence of the second end cover 1121 on the sealing member 120 when the second end cover 1121 rotates, the elastic component 110 may further include: a second fixing member 1124. A second groove is provided on the driving member 130, and the second fixing member 1124 is sleeved on the driving member 130 based on the second groove, and the second end cover 1121 and the third end cover 1122 are surrounded and arranged on the driving member 130 through the second fixing member 1124.

[0090] For example, the second fixing member 1124 can be configured as a corresponding split retaining ring structure to facilitate installation and removal. The second groove on the driving member 130 can be configured according to the actual size of the second fixing member 1124, or the second fixing member 1124 can be designed according to the surface parameters of the driving member 130 so as to be directly sleeved on the surface of the driving member 130.

[0091] It should be noted that, when the driving member 130 performs a rotational motion, the second fixing member 1124 is used to limit the rotation of the second end cover 1121 and the third end cover 1122, and the second end cover 1121 and the third end cover 1122 are used to limit the rotation of the second elastic tube 1123. The second fixing member 1124 is sleeved on the driving member 130 through a second groove provided on the driving member 130. Furthermore, the second fixing member 1124 can surround and fix the second end cover 1121 and the third end cover 1122 on the driving member 130, so as to limit the movement of the second end cover 1121 and the third end cover 1122 in the rotation direction F2 when the driving member 130 rotates, thereby limiting the rotational movement of the second end cover 1121, the third end cover 1122 and the second elastic tube 1123, so that the second end cover 1121, the third end cover 1122 and the second elastic tube 1123 do not move when the driving member 130 rotates. That is, when the driving member 130 rotates, the second end cover 1121, the third end cover 1122 and the second elastic tube 1123 The cover 1121, the third end cover 1122 and the second elastic tube 1123 do not move with the driving member 130, but are fixed at the original position by the second fixing member 1124. Therefore, when the driving member 130 rotates, the sealing member 120 and the stationary second end cover 1121 remain relatively stationary. The sealing member 120 is only affected by the friction force in the rotation direction F2 of the driving member 130, and will not be affected by the friction force in the rotation direction F2 of the second end cover 1121, thereby effectively reducing the friction force on the sealing member 120, reducing the loss of the sealing member 120, and extending the service life of the sealing member 120.

[0092] Optionally, two second fixing members 1124 may be provided to fix the second end cover 1121 and the third end cover 1122 respectively, or only the first second fixing member 1124 may be provided to fix the second end cover 1121 or the third end cover 1122 .

[0093] Optionally, Figure 3 Only a structure in which the sealing member 120 is arranged in the second sealing groove between the second end cover 1121 and the driving member 130 is shown. The sealing member 120 can also be arranged in the third sealing groove between the third end cover 1122 and the driving member 130. Other structures are not described in detail.

[0094] It should be noted that, considering the friction between the second elastic tube 1123 and the driving member 130 when the driving member 130 rotates, the second elastic tube 1123 can include various types of multi-layer hydraulic bellows structures to provide corresponding deformation torque for the rotational movement, thereby reducing the adverse effects of friction on the second elastic tube 1123.

[0095] Taking the valve device, in which the driving machine is a cylinder and a swing arm as an example, the action process from the closed state to the open state of the valve port may include: the valve is in the closed state, the four driving cylinders exhaust gas, drive the driving member 130 to drive the valve plate to separate from the valve seat of the valve port, the rodless chamber of the cylinder takes in gas, pushes the piston rod to extend, the piston rod pushes the driving member 130 to move axially, and the valve plate is separated from the valve seat. During the movement, the second elastic tube 1123 changes from a tensile state to a compressed state, the cylinder drives the swing arm to rotate clockwise, and the driving member 130 rotates clockwise. In the rotation direction F2, the second elastic tube 1123 is fixed at both ends and does not rotate with the driving member 130, or one end of the second elastic tube 1123 is fixed and the other end is in a floating state, which can withstand the friction during the rotation of the driving member 130. The valve plate is driven to rotate out by the driving member 130, and the valve is opened. The action process from the closed state to the open state of the valve port may include: the valve is in the open state, the cylinder drives the swing arm to rotate counterclockwise, thereby driving the driving member 130 to rotate counterclockwise, the second elastic tube 1123 is fixed at both ends in the rotation direction F2 and does not rotate with the driving member 130, or the second elastic tube 1123 is fixed at one end and in a floating state at the other end, and can withstand the friction during the rotation of the driving member 130. The valve plate is driven out by the driving member 130, and the valve is opened. The four driving cylinders have air intake in the rodless chamber and exhaust in the rod chamber. The driving member 130 presses the valve plate under the action of the cylinder. At the same time, the cylinder has air intake in the rod chamber and exhaust in the rodless chamber. The piston rod drives the driving member 130 to retract in the direction of pressing the valve plate, and the metal elastic sealing ring between the valve plate and the valve seat sealing surface is compressed, and the valve is closed. During the movement, the second elastic tube 1123 changes from a compressed state to a stretched state.

[0096] It should be noted that the first fixing member 1113 or the second fixing member 1124 may include various types of self-lubricating annular members as corresponding sliding bearings to reduce the friction between the fixing member and the driving member 130 and improve the smoothness of the axial and rotational movements of the driving member 130.

[0097] Optionally, other retaining ring structures, retaining ring structures, etc. in the control structure can also be configured as corresponding self-lubricating structures to reduce the influence of friction during the movement process.

[0098] It should be noted that the multiple devices and structures in the control structure can select suitable materials according to the actual application scenarios and cost requirements, such as selecting high temperature resistant and corrosion resistant metals and other materials.

[0099] See also Figure 4 , Figure 4 This is a schematic structural diagram of a valve device provided in an embodiment of the present application. The valve device may include: a valve plate 200, a driving machine 300, and any one of the control structures 100 described above.

[0100] The first end of the control structure 100 is connected to the valve plate 200, and the second end of the control structure 100 is connected to the driving machine 300, and the driving machine 300 is used to provide driving force for the control structure 100. The control structure 100 is used to control the valve plate 200 to perform axial movement and rotational movement perpendicular to the axial direction based on the driving force; wherein the axial direction is the direction between the first end and the second end of the driving member in the control structure 100.

[0101] The controlled component and the driving machine 300 can be connected at both ends of the control structure 100 to perform axial and rotational movements according to the driving force provided by the driving machine 300, thereby controlling the controlled component to perform corresponding axial and rotational movements and realizing corresponding control functions.

[0102] Optionally, in order to fix multiple devices, the valve device may also include corresponding valve bodies, sleeves, brackets and other structures. The sleeve can be welded to the valve body, and the control structure 100 can be arranged inside the sleeve to form a corresponding internal cavity between each device in the control structure 100 and the inside of the sleeve. The sleeve can be fixed to the valve body by screws and other structures, the support member can be pressed and connected to the sleeve, and the drive motor 300 can be fixed on the support frame to fix and control the control structure 100 inside the sleeve.

[0103] Since the principle of solving the problem by the valve device in the embodiment of the present application is similar to that of the embodiment of the aforementioned control structure, the implementation of the valve device in this embodiment can refer to the description in the embodiment of the aforementioned control structure, and the repeated parts will not be repeated.

[0104] In addition, the various parts in the various embodiments of the present application can be integrated together to form an independent part, or the various parts can exist separately, or two or more parts can be integrated to form an independent part.

[0105] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0106] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

[0107] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, article or device including the elements.

Claims

1. A control structure, characterized in that: The control structure comprises: an elastic component, a sealing component and a driving component; The first end of the driving member is connected to the controlled member, and the second end of the driving member is connected to the driving machine; The driving member is used to control the controlled member to perform axial movement and rotational movement perpendicular to the axial direction based on the driving force provided by the driving machine; wherein the axial direction is the extension direction of the line connecting the first end and the second end of the driving member; The elastic component is arranged around the driving member, and the elastic component is in contact with the sealing member; The elastic component is used for moving based on the axial movement or the rotational movement of the driving member; the sealing member is used for sealing the internal cavity; wherein the driving member and the elastic component are arranged in the internal cavity.

2. The control structure according to claim 1, characterized in that: in, The elastic component comprises: a first end cap and a first elastic tube; The first end cap is connected to the first end of the first elastic tube, and the second end of the first elastic tube is fixedly connected to the driving member; The first end cover and the first elastic tube are arranged around the driving member; The sealing member is disposed in a first sealing groove between the first end cover and the outer shell; When the driving member performs the rotational motion, based on the fixed connection between the first end cover and the second end of the first elastic tube and the driving member, the first elastic tube and the first end cover remain relatively stationary with the driving member.

3. The control structure according to claim 2, characterized in that: in, The elastic component further comprises: a first fixing member; The first end cover is provided with a first groove, and the first fixing member is sleeved on the first end cover based on the first groove; When the driving member performs the axial movement, the first fixing member is used to limit the movement of the first end cover in the axial direction, and the first end cover is used to limit the movement of the first end of the first elastic tube in the axial direction.

4. The control structure according to claim 2, characterized in that: The control structure further comprises: a slide groove and a sliding member; The slide groove is arranged along the axial direction on the connection surface where the first end cover is connected to the driving member; The first end cover and the driving member are slidably connected via the sliding groove and the sliding member; When the driving member performs the axial movement, based on the sliding connection between the sliding member and the sliding groove, the first elastic tube generates elastic deformation, and the second end of the first elastic tube and the driving member remain relatively still.

5. The control structure according to any one of claims 2 to 4, characterized in that: in, The first elastic tube includes a bellows structure.

6. The control structure according to claim 1, characterized in that: in, The elastic component comprises: a second end cap, a third end cap and a second elastic tube; The second end cap is connected to the first end of the second elastic tube, and the third end cap is connected to the second end of the second elastic tube; The second end cover and the third end cover are fixed on the driving member; The second end cover, the third end cover and the second elastic tube are arranged around the driving member; The sealing member is disposed in a second sealing groove between the second end cover and the driving member; When the driving member performs the axial movement, based on the fixed connection between the second end cover and the third end cover and the driving member, the second end cover, the third end cover, the second elastic tube and the sealing member remain relatively still with the driving member.

7. The control structure according to claim 6, characterized in that: in, The elastic component further comprises: a second fixing member; The driving member is provided with a second groove, and the second fixing member is sleeved on the driving member based on the second groove; The second end cover and the third end cover are disposed on the driving member in a surrounding manner through the second fixing member; When the driving member performs the rotational motion, the second fixing member is used to limit the rotation of the second end cover and the third end cover, and the second end cover and the third end cover are used to limit the rotation of the second elastic tube.

8. The control structure according to claim 6 or 7, characterized in that: in, The second elastic tube includes a multi-layer hydraulic bellows structure.

9. The control structure according to claim 3 or 7, characterized in that: in, The first fixing member or the second fixing member includes a self-lubricating annular member.

10. A valve device, characterized in that: The valve device comprises: a valve plate, a driving machine and a control structure as described in any one of claims 1 to 9; The first end of the control structure is connected to the valve plate, and the second end of the control structure is connected to the driving machine; The driving machine is used to provide driving force for the control structure; The control structure is used to control the valve plate to perform axial movement and rotational movement perpendicular to the axial direction based on the driving force; wherein the axial direction is the direction between the first end and the second end of the driving member in the control structure.

Images