Valve device and valve control method

Abstract

The invention provides a valve device and a valve control method, and relates to the technical field of valve control. The valve device comprises a valve plate assembly, a pressing assembly, a valve seat and a valve body. The valve seat is arranged on the valve body; the valve plate assembly is rotationally fixed to the valve body. The pressing assembly is fixed to the valve body. Under the condition that the valve port is closed by the valve plate assembly, the pressing assembly is used for moving in the first direction pointing to the valve port so as to abut against the non-sealing face of the valve plate assembly and provide pressure pointing to the first direction for the valve plate assembly; and under the condition that the valve port is opened by the valve plate assembly, the pressing assembly is used for moving in the second direction away from the valve port so as to generate a gap with the valve plate assembly. The distance between the valve plate assembly and the valve port is controlled through the pressing assembly, enough and stable pressure is provided for the valve plate assembly, the sealing effect of combination between the valve plate assembly and the valve seat when the valve port is closed is effectively optimized, and enough moving space is provided for the valve plate assembly when the valve port is opened so as to reduce friction generated when the valve plate assembly moves.

Description

Technical Field

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

[0002] In the current valve device, the valve plate needs to be pressed against the sealing surface of the valve seat to achieve the effect of sealing the valve port. In the prior art, the valve plate usually adopts an eccentric rotating mechanism, and has a certain displacement in the sealing direction. When moving, the valve plate disengages from the sealing surface of the valve seat. When sealing, the valve plate moves and presses in the direction of the sealing surface of the valve seat. The eccentric hole on the valve plate is connected to the clamping cylinder to drive the valve plate to disengage and clamp. However, due to the eccentric single-point clamping, it is difficult to ensure the sealing of the valve port in some application scenarios with larger valve diameters, resulting in poor sealing effect of the valve device and failure to meet current sealing requirements. Summary of the invention

[0003] In view of this, an object of the embodiments of the present application is to provide a valve device and a valve control method to improve the problem of poor sealing effect of the valve device existing in the prior art.

[0004] In order to solve the above problems, in a first aspect, an embodiment of the present application provides a valve device, the valve device comprising: a valve plate assembly, a clamping assembly, a valve seat and a valve body;

[0005] The valve seat is arranged on the valve body;

[0006] The valve plate assembly is rotatably fixed on the valve body;

[0007] The clamping assembly is fixed on the valve body;

[0008] When the valve plate assembly closes the valve port, the pressing assembly is used to move in a first direction pointing to the valve port to abut against the non-sealing surface of the valve plate assembly and provide pressure pointing to the first direction to the valve plate assembly;

[0009] When the valve plate assembly opens the valve port, the clamping assembly is used to move in a second direction away from the valve port to generate a gap with the valve plate assembly.

[0010] In the above implementation process, the valve plate assembly is rotatably fixed on the valve body provided with the valve seat, so as to realize the control of the opening and closing of the valve port through motion control in multiple different directions. The movement of the valve plate assembly in the first direction and the second direction can be controlled by the abutment or non-contact between the clamping assembly provided on the valve body and the non-sealing surface of the valve plate assembly, so as to effectively control the distance between the valve plate assembly and the valve port of the valve seat, and can provide sufficient and stable pressure for the valve plate assembly when the valve port is closed to ensure the effectiveness of the seal when the valve port is closed, optimize the sealing effect of the combination between the valve plate assembly and the valve seat when the valve port is closed, and when the valve port is opened, there is a gap between the clamping assembly and the valve plate assembly, which can provide sufficient moving space for the valve plate assembly to reduce the friction between the valve plate assembly and the valve seat and other components when the valve plate assembly moves. The sealing effect of the valve device is effectively optimized, which is suitable for valve port sealing scenarios of various different calibers and meets various different sealing requirements.

[0011] Optionally, the pressing assembly comprises: a driving member and a connected pressure member;

[0012] The driving member is fixed on the valve body, and is used to provide the pressure member with a driving force pointing to the first direction or the second direction;

[0013] The pressure member is used to abut against the non-sealing surface of the valve plate assembly based on the driving force in the first direction, and provide pressure pointing to the first direction to the valve plate assembly;

[0014] The pressure member is further configured to move based on the driving force in the second direction to generate a gap between the pressure member and the valve plate assembly.

[0015] In the above implementation process, the clamping assembly may include a driving member that provides a driving force, and a pressure member that is connected to the driving member to transmit the driving force. The driving member is fixed on the valve body to provide the pressure member with a stable driving force pointing in the first direction or the second direction. When the valve port is closed, the pressure member can abut against the non-sealing surface of the valve plate assembly based on the driving force in the first direction, so as to apply pressure pointing in the first direction to the valve plate assembly through abutment, so that the valve plate assembly fits with the valve seat to close the valve port; when the valve port is open, the pressure assembly can generate a gap between the valve plate assembly and the driving force in the second direction, so as to provide the valve plate assembly with sufficient moving space, and effectively reduce the friction generated by the valve plate assembly and other components when the valve seat moves. The driving force can be transmitted through the driving member and the pressure member, providing sufficient and stable pressure for the valve plate assembly, and further optimizing the sealing effect when the valve plate assembly is combined with the valve seat when the valve port is closed.

[0016] Optionally, a protruding structure is provided on one end of the pressure piece close to the valve body, and a concave structure corresponding to the protruding structure is provided on one surface of the valve body close to the pressure piece;

[0017] The convex structure and the concave structure are arranged parallel to the first direction or the second direction;

[0018] When the pressure member moves along the first direction or the second direction, the protruding structure is partially or completely accommodated in the recessed structure.

[0019] In the above implementation process, a protruding structure parallel to the movement direction can be provided at one end of the pressure piece close to the valve body, and correspondingly, a concave structure corresponding to the protruding structure can be provided on one side of the valve body close to the pressure piece. During the movement of the pressure piece, part or all of the protruding structure is accommodated in the concave structure, and the movement direction of the pressure piece can be restricted by the combination of the concave structure and the protruding structure, thereby effectively reducing the unfavorable conditions of misalignment and uneven force of the pressure piece, thereby improving the uniformity and accuracy of the force of the valve plate assembly, and optimizing the sealing effect when the valve plate assembly is combined with the valve seat when the valve port is closed.

[0020] Optionally, the clamping assembly comprises: n driving members, where n is a positive integer greater than or equal to 2;

[0021] The pressure piece is provided with n connection ends, and the n connection ends are symmetrically distributed on the pressure piece;

[0022] Each of the driving members is connected to the corresponding connecting end;

[0023] The n driving members move in conjunction with each other.

[0024] In the above implementation process, when the valve port diameter is large or the valve plate assembly is heavy, in order to provide sufficient driving force, the clamping assembly may include multiple driving members, and accordingly, the pressure member is also provided with multiple connection ends equal to the number of driving members, so as to connect the pressure member and the multiple driving members through the multiple connection ends. In addition, in order to further improve the force uniformity during driving, the multiple connection ends are symmetrically distributed on the pressure member, that is, the multiple driving members can also be symmetrically distributed after being connected to the pressure member, so as to provide the pressure member with a stable, uniform and unified driving force through symmetrical and multiple interlocking driving members, effectively reducing the unfavorable conditions of misalignment, uneven force and jamming of the pressure member, thereby improving the uniformity and accuracy of the force of the valve plate assembly, and optimizing the sealing effect when the valve plate assembly is combined with the valve seat when the valve port is closed.

[0025] Optionally, the driving member includes: a driving machine and a connecting structure;

[0026] The valve body is provided with a through hole structure, and the through hole structure is used to accommodate the connection structure;

[0027] The driving motor is arranged on a surface of the valve body away from the valve seat, the driving motor is connected to a first end of the connecting structure, and a second end of the connecting structure is connected to the pressure piece.

[0028] In the above implementation process, the driving member may include a driving machine that provides driving force, and a connecting structure that fixes the driving machine to the valve body. The connecting structure can be arranged in a through-hole structure on the valve body, and the driving machine is arranged on a side of the valve body away from the valve seat. The two ends of the connecting structure are respectively connected to the driving machine and the pressure member on both sides of the valve body, so that the driving machine can pass through the valve body to transfer the driving force to the pressure member to achieve corresponding motion control. By setting multiple parts through the valve body, the space required inside the valve body is effectively saved, and the structural complexity when the driving member is set inside the valve body is simplified.

[0029] Optionally, the connection structure includes a first connection head, a second connection head and an elastic tube structure;

[0030] The first connector is fixed on the through-hole structure of the valve body, and the first connector is connected to the driving machine;

[0031] The second connector is connected to the pressure piece;

[0032] Wherein, on the valve body, a sealing groove is provided at the connection between the first connector and the through hole structure, and a first sealing structure is provided in the sealing groove.

[0033] In the above implementation process, considering the movement characteristics of the pressure piece, the connection structure may include two connectors for fixing and connecting and an elastic tube structure, so as to provide sufficient movement stroke for the movement of the pressure piece through the elastic function of the elastic tube structure. In addition, considering the sealing requirements inside the valve body when the connection structure is fixed on the valve body, the connection between the fixedly connected first connector and the through-hole structure of the valve body may also be provided with a corresponding sealing groove for placing the first sealing structure, so as to seal the connection between the first connector and the through-hole structure through the first sealing structure, thereby improving the sealing inside the valve body. It is possible to provide the pressure piece with sufficient movement stroke without affecting the sealing inside the valve body, effectively improving the movement effectiveness of the pressure piece.

[0034] Optionally, the valve plate assembly comprises: a valve plate, a second sealing structure and a fixing structure;

[0035] The valve plate is provided with a groove area;

[0036] The second sealing structure is fixed in the groove area by a fixing structure.

[0037] In the above implementation process, the valve plate assembly may include a valve plate for sealing the valve port. In order to further improve the sealing performance when the valve plate is combined with the valve seat, a second sealing structure may be provided on the valve plate. The second sealing structure is provided in a groove area provided on the valve plate to reduce the protrusion of the second sealing structure based on the plane of the valve plate, and the second sealing structure is fixed inside the groove area by a fixing structure. The second sealing structure can realize a dynamic sealing effect between the valve seat and the valve plate, and effectively optimizes the sealing effect when the valve plate assembly is combined with the valve seat when the valve port is closed.

[0038] Optionally, the second sealing structure comprises a C-shaped sealing ring made of a metal material;

[0039] The C-shaped sealing ring comprises a C-shaped portion and a long strip portion;

[0040] When the valve port is closed, the C-shaped portion is used to contact the sealing end of the valve seat;

[0041] The outer diameter length of the C-shaped portion is d1, the depth of the groove area is d2, and d1>d2.

[0042] In the above implementation process, considering the high temperature, corrosion and radiation characteristics that may exist in the substance controlled by the valve port, as well as the deformation of the second sealing structure when the valve port is closed, the second sealing structure can be set as a C-shaped sealing ring of a metal material that is resistant to high temperature, corrosion, radiation and elastic. The C-shaped sealing ring has a deformable C-shaped part and a long strip part for fixing. In order to ensure that the C-shaped part of the C-shaped sealing ring can be higher than the surface of the valve plate sealing surface to effectively contact the valve seat, the outer diameter of the C-shaped part is greater than the depth of the groove area to reduce the unfavorable situation that the C-shaped sealing ring is completely inside the groove area and cannot effectively contact and seal with the valve seat.

[0043] Optionally, the fixing structure comprises: a fixing member and a fitting member;

[0044] The fixing member is used to fix the fitting member to the edge of the groove area on the valve plate;

[0045] The fitting and the valve plate are used to clamp and fix the long strip portion of the second sealing structure;

[0046] The thickness of the long strip portion is d3, the thickness of the fitting piece is d4, and d1-d3>d4.

[0047] In the above implementation process, the fixing structure may include a fixing member and a fitting member, the fixing member can fix the fitting member at the edge of the groove area on the valve plate, and the fitting member can clamp and fix the long strip portion of the second sealing structure with the valve plate, so that the long strip portion of the second sealing structure is fixed in the groove area through the combination of the fixing member and the fitting member. In addition, in order to further reduce the adverse effect of the thickness of the fitting member on the normal contact between the C-shaped portion and the valve seat, the difference between the length of the C-shaped portion and the thickness of the long strip portion is greater than the thickness of the fitting member, so that the C-shaped portion can be higher than the surface of the fitting member to normally contact and seal with the valve seat.

[0048] In a second aspect, an embodiment of the present application further provides a valve control method, the method comprising:

[0049] Based on the rotation stroke of the valve plate assembly, determining whether the valve plate assembly is at a target position corresponding to the valve seat;

[0050] If it is determined that the valve plate assembly is at the target position and a closing signal for closing the valve port is obtained, the pressing assembly is controlled to move in a first direction pointing to the valve port to abut against the non-sealing surface of the valve plate assembly and provide pressure pointing to the first direction to the valve plate assembly;

[0051] If it is determined that the valve plate assembly is at the target position and an opening signal for opening the valve port is obtained, the clamping assembly is controlled to move in a second direction away from the valve port to create a gap with the valve plate assembly.

[0052] In the above implementation process, it can be determined whether the valve plate assembly is at the target position corresponding to the valve seat according to the rotation stroke of the valve plate assembly. When the valve plate assembly is at the target position and the valve port needs to be closed, the clamping assembly can be controlled to abut the valve plate assembly and extend the movement in the first direction pointing to the valve port to provide sufficient and stable pressure to the valve plate assembly to ensure the effectiveness of the seal when the valve port is closed, and optimize the sealing effect of the combination between the valve plate assembly and the valve seat when the valve port is closed. When the valve plate assembly is at the target position and the valve port needs to be opened, the clamping assembly can extend the movement in the second direction away from the valve port to create a gap with the valve plate assembly, and can provide the valve plate assembly with sufficient moving space to reduce the friction between the valve plate assembly and the valve seat and other components when the valve plate assembly moves. It effectively optimizes the sealing effect of the valve device, is suitable for a variety of valve port sealing scenarios with different calibers, and meets a variety of different sealing requirements.

[0053] In summary, the embodiments of the present application provide a valve device and a valve control method, which controls the distance between the valve plate assembly and the valve port through a clamping assembly, provides sufficient and stable pressure for the valve plate assembly, effectively optimizes the sealing effect between the valve plate assembly and the valve seat when the valve port is closed, and provides sufficient moving space for the valve plate assembly when the valve port is open to reduce friction during movement of the valve plate assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] 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.

[0055] Figure 1 A schematic diagram of the structure of a valve device provided in an embodiment of the present application;

[0056] Figure 2 A schematic diagram of the structure of a clamping assembly provided in an embodiment of the present application;

[0057] Figure 3 A schematic diagram of the structure of a driving member provided in an embodiment of the present application;

[0058] Figure 4 A schematic structural diagram of a valve plate assembly provided in an embodiment of the present application;

[0059] Figure 5 A schematic diagram of the cross-sectional structure of a valve plate assembly provided in an embodiment of the present application;

[0060] Figure 6 A flow chart of a valve control method provided in an embodiment of the present application.

[0061] Icons: 110-valve plate assembly; 120-clamping assembly; 130-valve seat; 140-valve body; 121-driving member; 122-pressure member; 1221-connecting end; 1211-driving machine; 12111-fixing part; 1231-first connecting head; 1232-second connecting head; 1233-elastic tube structure; 1234-first sealing structure; 111-valve plate; 1111-groove area; 112-second sealing structure; 113-fixing structure; 1121-C-shaped part; 1122-long strip part; F1-first direction; F2-second direction. DETAILED DESCRIPTION

[0062] 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.

[0063] In the prior art, the valve plate usually adopts an eccentric rotating mechanism, and has a certain displacement in the sealing direction. When moving, the valve plate disengages from the sealing surface of the valve seat. When sealing, the valve plate moves toward the sealing surface of the valve seat and is pressed. The eccentric hole on the valve plate is connected to the clamping cylinder to drive the valve plate to disengage and clamp. However, due to the eccentric single-point clamping, in some application scenarios with larger valve diameters, there is uneven force when controlling the valve plate based on the eccentric hole, resulting in an unstable position of the valve plate, making it difficult to ensure the sealing of the valve port, resulting in poor sealing effect of the valve device, which cannot meet the current sealing requirements.

[0064] In order to solve the above problems, the embodiments of the present application provide a valve device and a valve control method, which controls the distance between the valve plate assembly and the valve port through a clamping assembly, provides sufficient and stable pressure for the valve plate assembly, effectively optimizes the sealing effect between the valve plate assembly and the valve seat when the valve port is closed, and provides sufficient moving space for the valve plate assembly when the valve port is open to reduce friction during the movement of the valve plate assembly.

[0065] See also Figure 1 , Figure 1 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 assembly 110, a clamping assembly 120, a valve seat 130 and a valve body 140.

[0066] The valve seat 130 is disposed on the valve body 140 , the valve plate assembly 110 is rotatably fixed on the valve body 140 , and the pressing assembly 120 is fixed on the valve body 140 .

[0067] It should be noted that, when the valve plate assembly 110 closes the valve port, the clamping assembly 120 is used to move in a first direction F1 pointing to the valve port so as to abut the non-sealing surface of the valve plate assembly 110 and provide pressure pointing in the first direction F1 to the valve plate assembly 110. When the valve plate assembly 110 opens the valve port, the clamping assembly 120 is used to move in a second direction F2 away from the valve port so as to create a gap with the valve plate assembly 110. By abutting or non-contacting the clamping assembly 120 provided on the valve body 140 with the non-sealing surface of the valve plate assembly 110, the movement of the valve plate assembly 110 in the first direction F1 and the second direction F2 can be controlled, so that the distance between the valve plate assembly 110 and the valve port of the valve seat 130 can be effectively controlled, and when the valve port is closed, sufficient and stable pressure can be provided to the valve plate assembly 110 to ensure the effectiveness of the seal when the valve port is closed, thereby optimizing the sealing effect of the combination between the valve plate assembly 110 and the valve seat 130 when the valve port is closed. When the valve port is opened, there is a gap between the clamping assembly 120 and the valve plate assembly 110, which can provide sufficient moving space for the valve plate assembly 110 to reduce the friction generated by the valve plate assembly 110 and the valve seat 130 and other components when the valve plate assembly 110 moves.

[0068] Optionally, the valve seat 130 can be provided as a part of the valve body 140, or the valve seat 130 can be welded to the valve body 140 by welding. Considering the dynamic sealing structure between the valve seat 130 and the valve plate 111, the dynamic seal has stricter requirements on the flatness of the sealing surface on the valve seat 130 than the static seal. The valve body 140 is a welded part, which has a large deformation after welding, and it is difficult to grind and polish the internal sealing surface of the valve body 140. Therefore, a split structure of the valve seat 130 and the valve body 140 can be adopted to set the dynamic sealing surface on the valve seat 130.

[0069] For example, a corresponding sealing boss may be provided on the valve seat 130 , and the sealing boss may be ground, polished, or the like before use to provide a sealing surface with a high degree of flatness on the sealing boss, thereby achieving dynamic sealing based on the contact between the sealing boss and the valve plate assembly 110 .

[0070] Optionally, the valve plate assembly 110 is rotatably fixed on a valve body 140 provided with a valve seat 130, so as to realize the control of the opening and closing of the valve port through motion control in multiple different directions. The clamping assembly 120 can drive the valve plate assembly 110 to realize axial movement and rotation, wherein the rotation is movement in a direction parallel to the valve port on the valve seat 130, and the axial movement is movement in the first direction F1 or the second direction F2.

[0071] Optionally, the shape and size of the valve seat 130 can be set according to actual conditions and requirements to form a valve port of corresponding shape and size. The valve plate assembly 110 can include a blind plate structure for shielding and closing the valve port. The shape and size of the blind plate structure can be set based on the actual shape and size of the valve port. For example, when the valve port is circular, the blind plate structure can be set to a circular plate structure; when the valve port is square, the blind plate structure can be set to a square plate structure, and so on.

[0072] exist Figure 1 In the described embodiment, the sealing effect of the valve device is effectively optimized, and is applicable to a variety of valve port sealing scenarios with different calibers, meeting a variety of different sealing requirements.

[0073] Optionally, see Figure 2 , Figure 2 A schematic diagram of a clamping assembly provided in an embodiment of the present application, wherein the clamping assembly 120 may include: a driving member 121 and a connected pressure member 122. The driving member 121 is fixed to the valve body 140, and the driving member 121 is used to provide a driving force pointing to the first direction F1 or the second direction F2 for the pressure member 122.

[0074] It should be noted that the pressure member 122 is used to abut against the non-sealing surface of the valve plate assembly 110 based on the driving force in the first direction F1, and provide the valve plate assembly 110 with pressure pointing to the first direction F1; the pressure member 122 is also used to move based on the driving force in the second direction F2 to generate a gap between the pressure member 122 and the valve plate assembly 110. The clamping assembly 120 may include a driving member 121 that provides a driving force, and a pressure member 122 that is connected to the driving member 121 to transmit the driving force. The driving member 121 is fixed to the valve body 140 to provide the pressure member 122 with a stable driving force pointing to the first direction F1 or the second direction F2. When the valve port is closed, the pressure member 122 can abut against the non-sealing surface of the valve plate assembly 110 based on the driving force in the first direction F1, so as to apply pressure pointing to the first direction F1 to the valve plate assembly 110 through abutment, so that the valve plate assembly 110 fits with the valve seat 130 to close the valve port; when the valve port is open, the pressure member can generate a gap between the pressure member and the valve plate assembly 110 based on the driving force in the second direction F2, so as to provide sufficient moving space for the valve plate assembly 110, and effectively reduce the friction generated by the valve plate assembly 110 and other components when the valve seat 130 moves. The driving force can be transmitted through the driving member 121 and the pressure member 122, providing sufficient and stable pressure for the valve plate assembly 110, and further optimizing the sealing effect when the valve plate assembly 110 is combined with the valve seat 130 when the valve port is closed.

[0075] Optionally, the driving member 121 may include a motor, a screw, a turbine, a worm, a cylinder, a driving shaft, or other devices having driving and transmission functions.

[0076] For example, in order to provide a complete and uniform driving force to the valve plate assembly 110 without affecting other parts inside the valve body 140 and the normal movement of the valve plate assembly 110, the pressure piece 122 can be set to a corresponding hollow ring structure based on the shape and size of the blind plate structure in the valve plate assembly 110. For example, when the blind plate structure is a circular plate, the pressure piece 122 can be set to a circular ring structure with an outer diameter parameter slightly smaller than the outer diameter parameter of the circular plate. When the blind plate structure is a square plate, the pressure piece 122 can be set to a square ring structure with a side length slightly smaller than the side length of the square plate, and so on.

[0077] It should be noted that a convex structure is provided at one end of the pressure member 122 close to the valve body 140, and a concave structure corresponding to the convex structure is provided on one surface of the valve body 140 close to the pressure member 122. The convex structure and the concave structure are arranged parallel to the first direction F1 or the second direction F2, and when the pressure member 122 moves along the first direction F1 or the second direction F2, the convex structure is partially or completely accommodated in the concave structure. One end of the pressure piece 122 close to the valve body 140 can be provided with a protruding structure parallel to the movement direction. Correspondingly, a side of the valve body 140 close to the pressure piece 122 can also be provided with a recessed structure corresponding to the protruding structure. During the movement of the pressure piece 122, part or all of the protruding structure is accommodated in the recessed structure. The movement direction of the pressure piece 122 can be restricted by the combination of the recessed structure and the protruding structure, thereby effectively reducing the unfavorable conditions of misalignment and uneven force of the pressure piece 122, thereby improving the uniformity and accuracy of the force on the valve plate assembly 110, and optimizing the sealing effect when the valve plate assembly 110 is combined with the valve seat 130 when the valve port is closed.

[0078] Optionally, the convex structure and the concave structure match in shape, so that the concave structure restricts the convex structure while reducing friction and collision between the concave structure and the convex structure.

[0079] It should be noted that, in the first direction F1 or the second direction F2, the length of the recessed structure is greater than the length of the protruding structure, so that the recessed structure can completely accommodate the protruding structure, and the length of the recessed structure is greater than the movement stroke of the pressure piece 122. The movement stroke of the pressure piece 122 is determined based on the distance between the initial position of the valve plate assembly 110 and the valve port when the valve port is open, so as to provide sufficient movement space for the pressure piece 122, thereby providing sufficient pressure for the valve plate assembly 110 to make it fit the valve seat 130 for sealing.

[0080] Please continue reading Figure 2 In some cases where the valve port diameter is large or the valve plate assembly 110 is heavy, in order to provide sufficient driving force, the clamping assembly 120 may include: n driving members 121, where n is a positive integer greater than or equal to 2.

[0081] It should be noted that the pressure member 122 is provided with n connecting ends 1221, which are symmetrically distributed on the pressure member 122, and each driving member 121 is connected to the corresponding connecting end 1221, and the n driving members 121 move in conjunction. The clamping assembly 120 may include a plurality of driving members 121, and accordingly, the pressure member 122 is also provided with a plurality of connecting ends 1221, which is the same number as the driving members 121, so that the pressure member 122 and the plurality of driving members 121 are connected through the plurality of connecting ends 1221. In order to further improve the uniformity of force during driving, multiple connecting ends 1221 are symmetrically distributed on the pressure piece 122, that is, multiple driving pieces 121 can also be symmetrically distributed after being connected to the pressure piece 122, so as to provide a stable, uniform and unified driving force for the pressure piece 122 through symmetrical and multiple interlocking driving pieces 121, thereby effectively reducing the unfavorable conditions of misalignment, uneven force and jamming of the pressure piece 122, thereby improving the uniformity and accuracy of the force on the valve plate assembly 110, and optimizing the sealing effect when the valve plate assembly 110 is combined with the valve seat 130 when the valve port is closed.

[0082] For example, the n connection ends 1221 can be centrally symmetrical or axially symmetrical with the center point of the pressure member 122 as the symmetry point, for example, two symmetrical connection ends 1221, or, Figure 2 Alternatively, the four axisymmetric connection ends 1221 shown in the figure may include a plurality of center-symmetrical connection ends 1221 distributed in the shape of a regular pentagon, a regular triangle, etc.

[0083] Optionally, the n driving members 121 may realize the linkage motion via the same motion axis, or realize the linkage motion via a synchronous control signal.

[0084] Optionally, see Figure 3 , Figure 3 A schematic diagram of the structure of a driving member provided in an embodiment of the present application, wherein the driving member 121 may include: a driving motor 1211 for providing driving force, and a connecting structure for fixing the driving motor 1211 on the valve body 140.

[0085] The valve body 140 is provided with a through hole structure, which is used to accommodate the connection structure. The driver 1211 is arranged on the side of the valve body 140 away from the valve seat 130. The driver 1211 is connected to the first end of the connection structure, and the second end of the connection structure is connected to the pressure piece 122. The connection structure can be arranged in the through hole structure on the valve body 140. The driver 1211 is arranged on the side of the valve body 140 away from the valve seat 130. The two ends of the connection structure are respectively connected to the driver 1211 and the pressure piece 122 on both sides of the valve body 140, so that the driver 1211 can pass through the valve body 140 to transmit the driving force to the pressure piece 122, so as to realize the corresponding motion control. By setting multiple parts through the valve body 140, the space required inside the valve body 140 is effectively saved, and the structural complexity when the driver 121 is arranged inside the valve body 140 is simplified.

[0086] For example, the driving machine 1211 can be fixed to the valve body 140 by fixing parts 12111 such as screws and nuts.

[0087] Optionally, the number of through-hole structures provided on the valve body 140 is also n, so as to respectively accommodate n driving members 121 .

[0088] For example, the driving machine 1211 may include a motor, a screw, a turbine, a worm, a cylinder, a drive shaft, etc., which have driving and transmission functions. The screw, worm, drive shaft, etc. in the driving machine 1211 are connected to the first end of the connection structure away from the valve seat 130, and the second end of the connection structure close to the valve seat 130 is connected to the pressure piece 122 to transmit the driving force to the pressure piece 122.

[0089] Optionally, considering the motion characteristics of the pressure piece 122, the connection structure may include a first connector 1231, a second connector 1232 and an elastic tube structure 1233. The first connector 1231 and the second connector 1232 are respectively connected to the two ends of the elastic tube. The first connector 1231 is the end away from the valve seat 130, and the second connector 1232 is the end close to the valve seat 130. The first connector 1231 is fixed on the through hole structure of the valve body 140, the first connector 1231 is connected to the driving machine 1211, and the second connector 1232 is connected to the pressure piece 122, which can provide sufficient motion stroke for the movement of the pressure piece 122 through the elastic function of the elastic tube structure 1233.

[0090] For example, the second connector 1232 may also be connected to the pressure piece 122 via fixing parts 12111 such as screws and nuts.

[0091] For example, the elastic tube structure 1233 can be configured as a structure such as a bellows, a spring, etc. having an elastic deformation function.

[0092] It should be noted that, considering the sealing requirements inside the valve body 140 when the connection structure is fixed on the valve body 140, a sealing groove may be provided at the connection between the first connector 1231 and the through-hole structure on the valve body 140, and a first sealing structure 1234 may be provided in the sealing groove, so as to seal the connection between the first connector 1231 and the through-hole structure through the first sealing structure 1234, thereby improving the sealing inside the valve body 140. It is possible to provide sufficient movement stroke for the pressure piece 122 without affecting the sealing inside the valve body 140, thereby effectively improving the movement effectiveness of the pressure piece 122.

[0093] Optionally, considering the fixing characteristics of the first connector 1231, the sealing structure at the sealing groove is a static sealing structure, and the first sealing structure 1234 can be set to a sealing ring structure of various structures such as rubber and metal.

[0094] See also Figure 4 , Figure 4 A schematic diagram of the structure of a valve plate assembly provided in an embodiment of the present application, the valve plate assembly 110 may include: a valve plate 111, a second sealing structure 112 and a fixing structure 113. A groove area 1111 is provided on the valve plate 111, and the second sealing structure 112 is fixed in the groove area 1111 by the fixing structure 113. The valve plate assembly 110 may include a valve plate 111 for sealing a valve port. In order to further improve the sealing performance when the valve plate 111 is combined with the valve seat 130, a second sealing structure 112 may also be provided on the valve plate 111. The second sealing structure 112 is provided in the groove area 1111 provided on the valve plate 111, so as to reduce the protrusion of the second sealing structure 112 based on the plane of the valve plate 111, and the second sealing structure 112 is fixed inside the groove area 1111 by the fixing structure 113. The second sealing structure 112 can realize a dynamic sealing effect between the valve seat 130 and the valve plate 111 , which effectively optimizes the sealing effect when the valve plate assembly 110 and the valve seat 130 are combined when the valve port is closed.

[0095] For example, in order to achieve the corresponding sealing function, the valve plate 111 can be set as a blind plate structure corresponding to the shape of the valve port, the second sealing structure 112 can also be set as a sealing ring structure made of multiple materials, and the fixing part can be set as a corresponding pressure ring, snap buckle and other parts.

[0096] For example, the driving machine 1211 may include a loosening and clamping cylinder, and the clamping assembly 120 may also include a corresponding swing arm cylinder to control the rotation of the valve plate 111. Taking n=4 as an example, the rodless ends of the four loosening and clamping cylinders are ventilated at the same time, and the rod ends are exhausted. The cylinder rods extend, driving the pressure piece 122 to move in the first direction F1, and pressing the second sealing structure 112 on the valve plate 111 against the sealing boss of the valve seat 130, and the valve is closed and sealed. The rod ends of the four loosening and clamping cylinders are ventilated at the same time, and the rodless ends are exhausted. The cylinder rods retract, driving the pressure piece 122 to move in the second direction F2, and a gap is generated between the pressure piece 122 and the valve plate 111, providing movement space for the valve plate 111 to be disengaged from the valve seat 130 and for subsequent rotation.

[0097] Optionally, see Figure 5 , Figure 5 A schematic diagram of the cross-sectional structure of a valve plate assembly provided in an embodiment of the present application.

[0098] It should be noted that, considering the high temperature, corrosion and radiation characteristics that may exist in the substance controlled by the valve port, as well as the deformation of the second sealing structure 112 when the valve port is closed, the second sealing structure 112 may include a C-shaped sealing ring made of metal material. The second sealing structure 112 may be configured as a C-shaped sealing ring made of metal material that is resistant to high temperature, corrosion, radiation and has elasticity. A C-ring refers to a type of sealing ring with a C-shaped cross-section that can provide a relatively large contact area with the moving side.

[0099] The C-shaped sealing ring includes a C-shaped portion 1121 and a long strip portion 1122. When the valve port is closed, the C-shaped portion 1121 is used to contact the sealing end of the valve seat 130. It should be noted that the C-shaped portion 1121 is a hollow structure to provide a corresponding deformation space. The outer diameter length of the C-shaped portion 1121 is d1, and the depth of the groove area 1111 is d2, d1>d2. The C-shaped sealing ring has a deformable C-shaped portion 1121 and a long strip portion 1122 for fixing. In order to ensure that the C-shaped portion 1121 of the C-shaped sealing ring can be higher than the surface of the sealing surface of the valve plate 111 to effectively contact the valve seat 130, the outer diameter length of the C-shaped portion 1121 is greater than the depth of the groove area 1111 to reduce the unfavorable situation that the C-shaped sealing ring is completely inside the groove area 1111 and cannot effectively contact and seal with the valve seat 130.

[0100] Optionally, the fixing structure 113 may include: a fixing member and a fitting member. The fixing member is used to fix the fitting member to the edge of the groove area 1111 on the valve plate 111, and the fitting member and the valve plate 111 are used to clamp and fix the long strip portion 1122 of the second sealing structure 112. The fitting member can clamp and fix the long strip portion 1122 of the second sealing structure 112 with the valve plate 111, so that the long strip portion 1122 of the second sealing structure 112 is fixed in the groove area 1111 through the combination of the fixing member and the fitting member.

[0101] For example, the fixing member can be a structure such as a nut or a screw, and the fitting can be configured as a pressure ring, a pressure belt, etc. having multiple through holes matching the shape of the fixing member. The fitting can be fixed to the inner edge or outer edge of the groove area 1111, and the ring width and shape of the fitting can be set according to the shape and size of the groove area 1111.

[0102] It should be noted that in order to further reduce the adverse effect of the thickness of the fitting on the normal contact between the C-shaped portion 1121 and the valve seat 130, the thickness of the elongated portion 1122 is d3, and the thickness of the fitting is d4, d1-d3>d4, that is, the difference between the length of the C-shaped portion 1121 and the thickness of the elongated portion 1122 is greater than the thickness of the fitting, so that the C-shaped portion 1121 can be higher than the surface of the fitting and can be normally contacted and sealed with the valve seat 130.

[0103] For example, d3 can be set to 1.2 mm, and the gap between the fitting and the valve plate 111 can be set to 1 mm, so that the fitting and the valve plate 111 can effectively clamp and fix the long strip portion 1122, d4 can be set to 5.3 mm, and d1 can be set to 8 mm.

[0104] See also Figure 6 , Figure 6 A flow chart of a valve control method provided in an embodiment of the present application, the method may include steps S210-S230.

[0105] Step S210: determining whether the valve plate assembly is at a target position corresponding to the valve seat based on the rotation stroke of the valve plate assembly.

[0106] Among them, the swing arm cylinder and the valve plate assembly can be connected through structures such as a controller and a processor to obtain the rotation stroke of the valve plate assembly. The rotation stroke can reflect the rotation angle of the valve plate assembly, so as to determine whether the current rotation position of the valve plate assembly is at the target position corresponding to the valve seat based on the rotation stroke of the valve plate assembly.

[0107] Optionally, the rotation stroke may be calculated by the stroke of the motor, the pressure of the cylinder, etc. The target position is a position corresponding to the valve port area in the first direction or the second direction.

[0108] Step S220, if it is determined that the valve plate assembly is at the target position and a closing signal for closing the valve port is obtained, the clamping assembly is controlled to move in a first direction toward the valve port to abut against the non-sealing surface of the valve plate assembly and provide pressure in the first direction to the valve plate assembly.

[0109] Among them, when the valve plate assembly is at the target position and the valve port needs to be closed, the clamping assembly can be controlled to abut the valve plate assembly and extend in the first direction toward the valve port to provide sufficient and stable pressure to the valve plate assembly to ensure the effectiveness of the seal when the valve port is closed, thereby optimizing the sealing effect between the valve plate assembly and the valve seat when the valve port is closed.

[0110] Step S230: If it is determined that the valve plate assembly is at the target position and an opening signal for opening the valve port is obtained, the clamping assembly is controlled to move in a second direction away from the valve port to create a gap with the valve plate assembly.

[0111] Among them, when the valve plate assembly is at the target position and the valve port needs to be opened, the clamping assembly can extend and move in a second direction away from the valve port to create a gap between the valve plate assembly and the valve plate assembly, thereby providing sufficient moving space for the valve plate assembly to reduce the friction generated by the valve plate assembly and components such as the valve seat when the valve plate assembly moves.

[0112] Optionally, the closing signal and the opening signal can be control signals obtained from the operator by the controller or the processor based on the set human-machine interaction interface. The operator can input various types of control signals such as voice, text, options, etc. according to the actual needs of valve control.

[0113] It should be noted that when the valve plate assembly is not at the target position, it indicates that the valve plate assembly has not yet rotated to the valve port position to work. The clamping assembly can be at an initial position with a gap between it and the valve plate assembly to provide sufficient space for the valve plate assembly to rotate, thereby reducing the friction generated by the valve plate assembly during rotation.

[0114] Since the principle of solving the problem by the valve control method in the embodiment of the present application is similar to that of the aforementioned embodiment of the valve device, the implementation of the valve control method in this embodiment can refer to the description in the aforementioned embodiment of the valve device, and the repeated parts will not be repeated.

[0115] In several embodiments provided in the present application, it should be understood that the disclosed device can also be implemented in other ways. The device embodiments described above are merely schematic, for example, the block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices according to the multiple embodiments of the present application. In this regard, each box in the block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram, and the combination of the block diagrams, can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0116] In addition, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0117] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0118] 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.

[0119] The above is only a specific implementation 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 covered by the protection scope of the present application.

[0120] 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, method, 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, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A valve device, characterized in that: The valve device comprises: a valve plate assembly, a clamping assembly, a valve seat and a valve body; The valve seat is arranged on the valve body; The valve plate assembly is rotatably fixed on the valve body; The clamping assembly is fixed on the valve body; When the valve plate assembly closes the valve port, the pressing assembly is used to move in a first direction pointing to the valve port to abut against the non-sealing surface of the valve plate assembly and provide pressure pointing to the first direction to the valve plate assembly; When the valve plate assembly opens the valve port, the clamping assembly is used to move in a second direction away from the valve port to create a gap with the valve plate assembly.

2. The valve device according to claim 1, characterized in that in, The clamping assembly comprises: a driving member and a connected pressure member; The driving member is fixed on the valve body, and is used to provide the pressure member with a driving force pointing to the first direction or the second direction; The pressure member is used to abut against the non-sealing surface of the valve plate assembly based on the driving force in the first direction, and provide pressure pointing to the first direction to the valve plate assembly; The pressure member is further configured to move based on the driving force in the second direction to generate a gap between the pressure member and the valve plate assembly.

3. The valve device according to claim 2, characterized in that in, A convex structure is provided on one end of the pressure piece close to the valve body, and a concave structure corresponding to the convex structure is provided on one surface of the valve body close to the pressure piece; The convex structure and the concave structure are arranged parallel to the first direction or the second direction; When the pressure member moves along the first direction or the second direction, the protruding structure is partially or completely accommodated in the recessed structure.

4. The valve device according to claim 2, characterized in that in, The clamping assembly comprises: n driving members, where n is a positive integer greater than or equal to 2; The pressure piece is provided with n connection ends, and the n connection ends are symmetrically distributed on the pressure piece; Each of the driving members is connected to the corresponding connecting end; The n driving members move in conjunction with each other.

5. The valve device according to claim 2, characterized in that in, The driving member comprises: a driving machine and a connecting structure; The valve body is provided with a through hole structure, and the through hole structure is used to accommodate the connection structure; The driving motor is arranged on a surface of the valve body away from the valve seat, the driving motor is connected to a first end of the connecting structure, and a second end of the connecting structure is connected to the pressure piece.

6. The valve device according to claim 5, characterized in that in, The connection structure comprises a first connection head, a second connection head and an elastic tube structure; The first connector is fixed on the through-hole structure of the valve body, and the first connector is connected to the driving machine; The second connector is connected to the pressure piece; Wherein, on the valve body, a sealing groove is provided at the connection between the first connector and the through hole structure, and a first sealing structure is provided in the sealing groove.

7. The valve device according to any one of claims 1 to 6, characterized in that: in, The valve plate assembly comprises: a valve plate, a second sealing structure and a fixing structure; The valve plate is provided with a groove area; The second sealing structure is fixed in the groove area by a fixing structure.

8. The valve device according to claim 7, characterized in that in, The second sealing structure comprises a C-shaped sealing ring made of metal material; The C-shaped sealing ring comprises a C-shaped portion and a long strip portion; When the valve port is closed, the C-shaped portion is used to contact the sealing end of the valve seat; The outer diameter length of the C-shaped portion is d1, the depth of the groove area is d2, and d1>d2.

9. The valve device according to claim 8, characterized in that The fixing structure comprises: a fixing member and a fitting member; The fixing member is used to fix the fitting member to the edge of the groove area on the valve plate; The fitting and the valve plate are used to clamp and fix the long strip portion of the second sealing structure; The thickness of the long strip portion is d3, the thickness of the fitting piece is d4, and d1-d3>d4.

10. A valve control method, characterized in that: The method comprises: Based on the rotation stroke of the valve plate assembly, determining whether the valve plate assembly is at a target position corresponding to the valve seat; If it is determined that the valve plate assembly is at the target position and a closing signal for closing the valve port is obtained, the pressing assembly is controlled to move in a first direction pointing to the valve port to abut against the non-sealing surface of the valve plate assembly and provide pressure pointing to the first direction to the valve plate assembly; If it is determined that the valve plate assembly is at the target position and an opening signal for opening the valve port is obtained, the clamping assembly is controlled to move in a second direction away from the valve port to create a gap with the valve plate assembly.

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