Valve clack compression tool

Abstract

The utility model discloses a valve clack compression tool which comprises a first adjusting assembly and two supporting assemblies arranged in a spaced mode, an installation space for containing a valve clack is formed between the two supporting assemblies, each supporting assembly comprises a supporting piece and a clamping structure, each clamping structure comprises a compression cushion block, a base and an elastic piece, and the compression cushion blocks are connected into a moving channel in a sliding mode. And a movable gap is formed between the elastic piece and the moving channel, and the elastic piece provides elastic force for the compression cushion block. According to the utility model, the elastic piece has flexibility and can generate radial deformation, the compression cushion block can incline and swing in the movable gap under the action of the elastic force of the elastic piece so as to adaptively adjust the direction of the clamping force on the valve clacks, and the compression cushion block can adapt to the situation that the valve clacks on the two sides are not centered and stably contact with the side surfaces of the valve clacks; and the compression tool can clamp the valve clack more stably and reliably.

Description

Technical Field

[0001] The utility model relates to the technical field of parallel gate valve disassembly and assembly tools, in particular to a valve disc compression tool. Background Art

[0002] The parallel gate valve has fully open and fully closed states, and plays the role of cutting off the flow in the power station system. A support spring is installed between the two valve discs of the parallel gate valve. The valve disc has a tendency to open to both sides under the action of the support spring, and slides in contact with the upstream and downstream sealing surfaces and increases the sealing force when the medium pressure is low. During the reinstallation of the parallel gate valve, if sufficient compression force is not applied to the support spring in advance, the valve disc will find it difficult to overcome the elastic force of the support spring and accurately position itself, resulting in the contact position between the valve disc and the valve seat being offset, affecting the sealing effect and even causing the valve to become stuck.

[0003] In the related art, auxiliary tools are used to clamp the valve flap so that the valve flap can be contracted to an appropriate width. During the disassembly and assembly of the valve flap, the valve flaps on both sides may be tilted or offset, and are not aligned. Conventional tools for clamping the valve flap cannot adapt to the state of the valve flap, and problems such as unstable clamping and inaccurate valve flap installation position may easily occur. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a valve flap compression tool that can improve the stability and reliability of the valve flap during disassembly and assembly.

[0005] According to the valve flap compression tool in the embodiment of the present invention, it includes a first adjustment component and two spaced support components, wherein a mounting space for accommodating the valve flap is formed between the two support components, and the two ends of the first adjustment component are respectively connected to the two support components for adjusting the spacing between the two support components; the support component includes a support member; and

[0006] At least one clamping structure, the clamping structure being disposed in the installation space and configured to abut against the valve disc, the clamping structure comprising a compression pad, a base, and an elastic member, the base being connected to the support member, the base having a movable channel therein, the compression pad being slidably connected within the movable channel, and the elastic member having two ends respectively connected to an inner wall of the movable channel and the compression pad;

[0007] There is a movable gap between the compression pad and the inner wall of the movable channel, and the elastic member provides the compression pad with an elastic force toward the valve disc, so that the compression pad abuts against the valve disc.

[0008] The valve flap compression tool according to the embodiment of the utility model has at least the following beneficial effects:

[0009] In the present invention, the first adjusting component can adjust the distance between the two supporting components so that the compression pad is close to or away from the valve disc. There is a movable gap between the compression pad and the movable channel. The elastic part is flexible and can produce radial deformation. The compression pad can tilt and swing in the movable gap under the elastic force of the elastic part to adaptively adjust the direction of the clamping force on the valve disc. The compression pad can adapt to the situation where the valve discs on both sides are not centered and maintain stable contact with the side of the valve disc. The compression tool clamps the valve disc more stably and reliably.

[0010] According to some embodiments of the present invention, the compression pad has a moving portion and a clamping portion, the moving portion is slidably connected in the moving channel and connected to the elastic member, the movable gap is formed between the side wall of the moving portion and the inner wall of the moving channel, and the clamping portion is connected to an end of the moving portion away from the elastic member and extends out of the moving channel;

[0011] Wherein, a limiting portion is protruding from the inner wall of the moving channel, and the outer diameter of the limiting portion is larger than the outer diameter of the clamping portion, so as to limit the axial direction of the moving portion.

[0012] According to some embodiments of the present invention, the clamping structure further includes a retaining spring, the inner wall of the movable channel is provided with a groove, part of the retaining spring is clamped in the groove, and the part of the retaining spring protruding into the interior of the movable channel forms the limiting portion.

[0013] According to some embodiments of the present invention, the compression pad also includes a connecting portion, which is connected to a section of the movable portion facing away from the clamping portion, and the outer diameter of the connecting portion is smaller than the outer diameter of the movable portion, and the connecting portion is connected to one end of the elastic member.

[0014] According to some embodiments of the present invention, one end of the movable channel forms an opening for the clamping portion to extend, the other end of the movable channel is closed and forms a limiting wall, and the two ends of the elastic member are respectively connected to the limiting wall and the connecting portion.

[0015] According to some embodiments of the present invention, the cross-section of the moving portion is circular, and the cross-section of the moving channel is circular.

[0016] According to some embodiments of the present invention, an anti-slip pad is provided at one end of the clamping portion facing away from the moving portion.

[0017] According to some embodiments of the present invention, the first adjustment assembly includes a first adjustment handle and a first adjustment screw and a second adjustment screw respectively threadedly connected to the opposite ends of the first adjustment handle, and the first adjustment screw and the second adjustment screw can move toward or away from each other following the rotation of the first adjustment handle; the end of the first adjustment screw facing away from the first adjustment handle is connected to the support member of one of the support assemblies, and the end of the second adjustment screw facing away from the first adjustment handle is connected to the support member of the other support assembly.

[0018] According to some embodiments of the present invention, the valve flap compression tool also includes a second adjustment component, the first adjustment component and the second adjustment component are parallel to each other and are spaced apart on the same side of the clamping structure, and the two ends of the second adjustment component are respectively rotatably connected to the two support components.

[0019] According to some embodiments of the present invention, the second adjustment assembly includes a second adjustment handle, and a third adjustment screw and a fourth adjustment screw respectively threadedly connected to opposite ends of the second adjustment handle, wherein the third adjustment screw and the fourth adjustment screw are capable of moving toward or away from each other following the rotation of the second adjustment handle;

[0020] One end of the third adjusting screw facing away from the second adjusting handle is rotatably connected to the support member of one of the supporting assemblies, and one end of the fourth adjusting screw facing away from the second adjusting handle is rotatably connected to the support member of the other supporting assembly.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a structural diagram of an embodiment of the valve disc compression tool of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of an embodiment of a clamping structure;

[0025] Figure 3 is a schematic diagram of an embodiment of a first adjustment component;

[0026] Figure 4 is a schematic diagram of an embodiment of a first support member;

[0027] Figure 5A schematic diagram of an embodiment of a compressed single block;

[0028] Figure 6 Schematic diagram of an embodiment of a base.

[0029] Reference numerals:

[0030] First adjustment assembly 100, first adjustment handle 110, first adjustment screw 120, rotating portion 121, rotating hole 1211, second adjustment screw 130;

[0031] Support assembly 200, support member 210, installation space 211, support plate 201, installation hole 2011, connecting block 202;

[0032] Clamping structure 300, compression pad 310, moving portion 311, clamping portion 312, connecting portion 313, base 320, moving channel 321, movable gap 322, groove 323, opening 324, limiting wall 325, elastic member 330, limiting portion 340;

[0033] A second adjustment assembly 400 , a second adjustment handle 410 , a third adjustment screw 420 , and a fourth adjustment screw 430 . DETAILED DESCRIPTION

[0034] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0036] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0039] The embodiment of the present invention provides a valve disc compression tool for compressing the valve disc when disassembling or assembling the valve disc, so as to install the valve disc in a preset position of the valve seat. Figure 1 The valve flap compression tool (hereinafter referred to as the compression tool) includes a first adjustment component 100 and two spaced-apart support components 200. The support component 200 includes a support member 210 and at least one clamping structure 300. When the operator performs corresponding operations on the first adjustment component 100, the clamping structure 300 in the support component 200 can move closer to or away from the valve flap to compress or release the valve flap.

[0040] An installation space for accommodating the valve disc is formed between the two support assemblies 200 , and the clamping structure 300 is arranged in the installation space. Both ends of the first adjustment assembly 100 are respectively connected to the two support assemblies 200 for adjusting the distance between the two support assemblies 200 .

[0041] Reference Figure 2 The clamping structure 300 includes a compression pad 310, a base 320, and an elastic member 330. The base 320 is connected to the support member 210. The base 320 has a movable channel 321 inside. The compression pad 310 is slidably connected to the movable channel 321. The ends of the elastic member 330 are respectively connected to the inner wall of the movable channel 321 and the compression pad 310. A movable gap 322 is defined between the side wall of the compression pad 310 and the inner wall of the movable channel 321, so that the compression pad 310 can move along the movable channel 321 and also swing based on the inner wall of the movable channel 321.

[0042] The elastic member 330 provides an elastic force toward the valve disc to the compression pad 310, so that the compression pad 310 abuts against the valve disc. Since there is a movable gap 322 between the compression pad 310 and the movable channel 321, and the elastic member 330 is flexible and can produce radial deformation, after the compression pad 310 contacts the valve disc, if the valve discs on both sides are misaligned, compared with the conventional technology, in which the auxiliary tool directionally clamps the valve disc, the elastic member 330 can produce radial deformation and provide an elastic force to the compression pad 310. Under the action of the elastic force of the elastic member 330, the compression pad 310 can tilt and swing within the movable gap 322 to adaptively adjust the direction of the clamping force on the valve disc. The compression pad 310 can and stably contact the side of the valve disc, and the compression tool clamps the valve disc more stably and reliably.

[0043] It should be noted that the compression pads 310 within the two support assemblies 200 are positioned facing each other and cooperate to compress the valve discs on both sides of the gate valve. The elastic member 330 provides an elastic force to the compression pad 310 on the same side, causing it to move toward the compression pad 310 on the opposite side. This forces the compression pads 310 of at least two clamping structures 300 to abut against both sides of the valve disc. Under the elastic force of the elastic member 330, the two compression pads 310 tend to move toward each other. After contacting the valve disc, the compression pads 310 achieve a flexible connection with the valve disc, and the valve disc is compressed by the thrust of the compression pads 310. If the valve flaps on both sides are misaligned, since the directions of the elastic forces of the elastic members 330 in the clamping structures 300 on both sides are opposite, the compression pads 310 on both sides can tilt and swing in the movable gap 322 under the elastic force of the elastic members 330 to adaptively adjust the direction of the clamping force on the valve flap. The compression pads 310 can swing in the movable channel 321 and be in stable contact with the side of the valve flap, so that the compression tool can clamp the valve flap more stably and reliably.

[0044] The first adjustment assembly 100 is not limited to adjusting the distance between the two support assemblies 200. The first adjustment assembly 100 includes a driving component capable of driving the two support assemblies 200 to move toward and away from each other. The driving component is not limited to being configured as a motor, cylinder, etc. that can provide linear power. When the two support assemblies 200 move toward or away from each other, the two support assemblies 200 move closer to or farther from each other, thereby adjusting the distance between them. Alternatively, the first adjustment assembly 100 includes a driving component capable of driving the two support assemblies 200 to rotate. The driving component is not limited to being configured as a motor, servo, etc. that can provide rotational power. When the two support assemblies 200 rotate, the ends of the two support assemblies connected to the compression pad 310 can move closer to or farther from each other, thereby adjusting the distance between them.

[0045] In one embodiment, the first adjustment assembly 100 includes a first adjustment handle 110 and a first adjustment screw 120 and a second adjustment screw 130 respectively threadedly connected to the opposite ends of the first adjustment handle 110. The thread direction of the first adjustment screw 120 and the first adjustment handle 110 is opposite to the thread direction of the second adjustment screw 130 and the first adjustment handle 110. Therefore, when the first adjustment handle 110 is rotated, the first adjustment screw 120 and the second adjustment screw 130 at the two ends of the first adjustment handle 110 can move toward each other or away from each other, thereby achieving relative proximity or distance between the two. One end of the first adjusting screw 120 facing away from the first adjusting handle 110 is connected to the support member 210 of one of the support assemblies 200, and one end of the second adjusting screw 130 facing away from the first adjusting handle 110 is connected to the support member 210 of the other support assembly 200. When the first adjusting screw 120 and the second adjusting screw 130 move toward or away from each other, they can synchronously drive the two support assemblies 200 to move closer or farther away from each other, so as to adjust the distance between the two support assemblies 200.

[0046] Taking the example that the first adjusting screw 120 and the second adjusting screw 130 move toward each other when the first adjusting handle 110 is rotated counterclockwise, and move away from each other when the first adjusting handle 110 is rotated clockwise, during the disassembly and assembly of the valve disc, the first adjusting handle 110 is rotated to ensure that there is a suitable distance between the two support assemblies 200 and the two compression pads 310, so that the support assembly 200 and the clamping structure 300 can enter the interior of the gate valve, and the two compression pads 310 are respectively located on the opposite sides of the two valve discs; then, the first adjusting handle 110 is rotated counterclockwise, and the second adjusting screw 130 is rotated clockwise. An adjusting screw 120 and a second adjusting screw 130 move toward each other, and driven by the support members 210 in the two support assemblies 200, the two compression pads 310 enter the valve cavity on the side of the valve disc, and the distance between the two gradually decreases and gradually approaches the valve disc until each compression pad 310 contacts a valve disc; continue to rotate the first adjusting handle 110 counterclockwise, and the valve discs on both sides are compressed. Stop rotating the first adjusting handle 110 when the valve disc is compressed to the preset position, so that the valve disc is accurately positioned, and the disassembly and assembly of the valve disc is simple and fast, which improves the maintenance efficiency of the gate valve.

[0047] In the above embodiment, the end of the first adjusting screw 120 is fixedly connected to the support member 210 in one of the support assemblies 200. Similarly, the end of the second adjusting screw 130 is fixedly connected to the support member 210 in the other support assembly 200. Since one end of the first adjusting screw 120 and the second adjusting screw 130 are fixed, the first adjusting screw 120 and the second adjusting screw 130 can only move relative to the first adjusting handle 110 when the first adjusting handle 110 is rotated, thereby synchronously driving the two support assemblies 200 toward or away from each other. The connection method between the first adjusting screw 120 and the support member 210 and the connection method between the second adjusting screw 130 and the support member 210 are not limited to welding, screw connection, etc.

[0048] In another embodiment, referring to Figure 1 The compression tool further includes a second adjustment assembly 400. The first adjustment assembly 100 and the second adjustment assembly 400 are parallel to each other and spaced apart on the same side of the clamping structure 300. The two ends of the second adjustment assembly 400 are rotatably connected to the two support assemblies 200. The first adjustment assembly 100 and the second adjustment assembly 400 cooperate with each other to achieve the movement of the two compression pads 310 toward or away from each other. For example, the second adjustment assembly 400 is located between the first adjustment assembly 100 and the clamping structure 300, and rotating the first adjustment handle 110 counterclockwise can move the first adjustment screw 120 and the second adjustment screw 130 toward each other. During the disassembly and assembly of the valve disc, after the support assembly 200 and the clamping structure 300 enter the interior of the gate valve, keep the second adjustment assembly 400 stationary and rotate the first adjustment handle 110 clockwise. At this time, the first adjustment screw 120 and the second adjustment screw 130 move away from one end of the first adjustment handle 110, and the two support assemblies 200 rotate relative to the rotating connection with the second adjustment assembly 400, so that the two compression pads 310 move toward each other to achieve compression of the valve disc. When the first adjusting component 100 is located between the second adjusting component 400 and the clamping structure 300, during the disassembly and assembly of the valve disc, after the support component 200 and the clamping structure 300 enter the interior of the gate valve, the second adjusting component 400 is kept stationary and the first adjusting handle 110 is rotated counterclockwise. At this time, the first adjusting screw 120 and the second adjusting screw 130 are close to one end of the first adjusting handle 110 with their backs to each other, and the two supporting components 200 are rotated relative to the rotating connection with the second adjusting component 400, so that the two compression pads 310 move toward each other to achieve compression of the valve disc.

[0049] In this embodiment, the second adjustment assembly 400 may be configured as a rod-shaped component, and both ends of the rod-shaped component are rotatably connected to the two support assemblies 200 respectively.

[0050] Furthermore, in one embodiment, the second adjustment assembly 400 includes a second adjustment handle 410, and a third adjustment screw 420 and a fourth adjustment screw 430 respectively threadedly connected to opposite ends of the second adjustment handle 410. The thread direction of the third adjustment screw 420 and the second adjustment handle 410 is opposite to the thread direction of the fourth adjustment screw 430 and the second adjustment handle 410. The third adjustment screw 420 and the fourth adjustment screw 430 are capable of moving toward or away from each other following the rotation of the second adjustment handle 410. The end of the third adjustment screw 420 facing away from the second adjustment handle 410 is rotatably connected to the support member 210 in one of the support assemblies 200, and the end of the fourth adjustment screw 430 facing away from the second adjustment handle 410 is rotatably connected to the support member 210 in the other support assembly 200.

[0051] Taking the example of the second adjustment assembly 400 being located between the first adjustment assembly 100 and the clamping structure 300, and the first adjustment handle 110 and the second adjustment handle 410 driving the adjustment screw in the same direction, that is, when the first adjustment handle 110 and the second adjustment handle 410 are rotated counterclockwise, the corresponding two adjustment screws move toward each other, and when the first adjustment handle 110 and the second adjustment handle 410 are rotated clockwise, the corresponding two adjustment screws move away from each other. During the disassembly and assembly of the valve disc, after the support assembly 200 and the clamping structure 300 enter the interior of the gate valve, the second adjustment assembly 400 is kept stationary and the first adjustment handle 110 is rotated clockwise. At this time, the first adjustment screw 120 and the second adjustment screw 130 move away from the end facing away from the first adjustment handle 110, one support member 210 rotates relative to the rotational connection with the third adjustment screw 420, and the other support member 210 rotates relative to the rotational connection with the fourth adjustment screw 430, causing the two compression pads 310 to move toward each other, thereby compressing the valve disc. Alternatively, keep the first adjustment assembly 100 stationary and rotate the second adjustment handle 410 counterclockwise. At this time, the third adjustment screw 420 and the fourth adjustment screw 430 are close to one end of the second adjustment handle 410 with their backs facing away. One of the support members 210 rotates relative to the rotation connection with the first adjustment screw 120, and the other support member 210 rotates relative to the rotation connection with the second adjustment screw 130, so that the two compression pads 310 move toward each other to achieve compression of the valve flap.

[0052] It is understandable that in this embodiment, the first adjustment assembly 100 can also be arranged between the second adjustment assembly 400 and the clamping structure 300. In addition, the adjustment assembly farther from the clamping structure 300 is preferably operated, which can adapt to the situation where the valve disc is farther from the gate valve, thereby realizing remote disassembly and assembly of the valve disc.

[0053] The first adjustment handle 110 and the second adjustment handle 410 can both be cylindrical in shape to facilitate gripping by the operator, thereby reducing discomfort when turning the first adjustment handle 110 and the second adjustment handle 410. Furthermore, the first adjustment handle 110 and the second adjustment handle 410 can have a bionic design to enhance the ease of operation of the adjustment handles.

[0054] Both ends of the first adjustment handle 110 and the second adjustment handle 410 are provided with threaded holes for the adjustment screw to be inserted and threadedly connected to the adjustment handle; or the end of the adjustment screw facing away from the support member is provided with a threaded hole, and one end of the adjustment handle is inserted into the threaded hole and threadedly connected to the adjustment screw. Figure 3 , threaded holes 111 are provided at both ends of the first adjustment handle 110, and the first adjustment screw 120 and the second adjustment screw 130 are respectively threadedly connected to the threaded holes 111 on both sides, and the other end of the first adjustment screw 120 is rotatably connected to one of the support members 210, and the other end of the second adjustment screw 130 is rotatably connected to the other support member 210; it can be understood that the second adjustment component 400 is assembled in the same connection method and is rotatably connected to the two support members 210.

[0055] Reference Figure 4 The support member 210 is provided with an installation space 211 inside. The end of the first adjusting screw 120 is accommodated in the installation space 211 of one of the supports 210 and connected to the first support member 210. The end of the second adjusting screw 130 is accommodated in the installation space 211 of the other support member 210 and connected to the support member 210. On the one hand, the installation space 211 provides space for the rotation of the first adjusting screw 120 and the second adjusting screw 130, and avoids the rotation of the first adjusting screw 120 and the second adjusting screw 130, so that the first adjusting screw 120 and the second adjusting screw 130 can rotate freely and smoothly relative to the support member 210. On the other hand, the provision of the installation space 211 can save materials and reduce costs while ensuring that the two supports 210 have sufficient bending strength and shear strength. It can be understood that the two supports 210 are symmetrical with respect to the center of the first adjustment assembly 100 and have the same structural composition.

[0056] In one embodiment, the support member 210 includes two support plates 201 arranged side by side, with a plurality of spaced connection blocks 202 disposed between the two support plates 201. The facing sides of the two support plates 201 are fixed to the opposite sides of the connection blocks 202 by welding. A first installation space 211 or a second installation space is defined between the adjacent connection blocks 202 and the two support plates 201 to prevent the rotation of the first adjustment screw 120 and the second adjustment screw 130, and to meet the overall load-bearing requirements and structural strength of the compression tool. In addition, the bases 320 of the two clamping structures 300 are respectively connected to the facing sides of the two support members 210. The side of the support member 210 has sufficient space for installing the bases 320 of the two clamping structures 300. There is sufficient contact area between the base 320 and the support member 210, and the pressure can be evenly distributed, thereby improving the overall stability of the compression tool.

[0057] It is understood that the length of the support member 210 can be flexibly adjusted based on the actual depth of the gate valve cavity. This allows the first adjustment assembly 100 and the end of the support member 210 facing away from the clamping structure 300 to be positioned outside the valve cavity when the compression tool is in use, facilitating operation of the compression tool. Alternatively, the support member 210 can be configured to be retractable, allowing the length of the support member 210 to be freely adjusted as needed.

[0058] One end of the first adjusting screw 120 in the first adjusting assembly 100 is inserted into the mounting space 211 of one of the support members 210 and is rotatably connected to the support member 210. Similarly, one end of the second adjusting screw 130 is inserted into the mounting space 211 of the other support member 210 and is rotatably connected to the support member 210. Taking the rotatable connection between the first adjusting screw 120 and the support member 210 as an example, the end of the first adjusting screw 120 is provided with a rotating portion 121. The rotating portion 121 is located between the two support plates 201. The rotating portion 121 has a rotation hole 1211 extending therethrough. Both support plates 201 have a mounting hole 2011 connected to the rotation hole 1211. A threaded fastener having threads at both ends and a polished rod in the middle is sequentially inserted into the mounting hole 2011 and the rotation hole 1211. Thus, the ends of the threaded fastener are respectively connected and fixed to the two support plates 201. The rotating portion 121 is rotatably connected to the polished rod position of the threaded fastener, so that the rotating portion 121 can rotate relative to the support member 210.

[0059] Reference Figure 2 、 Figure 5 and Figure 6The compression pad 310 has a moving portion 311 and a clamping portion 312. The moving portion 311 is slidably connected to the moving channel 321 and is connected to the elastic member 330. A movable gap 322 is formed between the side wall of the moving portion 311 and the inner wall of the moving channel 321. The clamping portion 312 is connected to the end of the moving portion 311 facing away from the elastic member 330 and extends to the outside of the moving channel 321. The extended end of the clamping portion 312 can contact the valve disc. When the first adjusting handle 110 is rotated, under the action of the elastic force of the elastic member 330 and the pushing force of the support member 210, the moving portion 311 moves in the moving channel 321, and the two clamping portions 312 clamp the valve discs on both sides. A limiting portion 340 is protruding from the inner wall of the movable channel 321. The outer diameter of the limiting portion 340 is larger than the outer diameter of the movable portion 311. The limiting portion 340 is used to abut against the movable portion 311 to limit the axial direction of the movable portion 311. The movable portion 311 can move in the movable channel 321. At the same time, the limiting portion 340 limits the extreme position of the movement of the movable portion 311 to limit the movable portion 311 in the movable channel 321 to prevent the movable portion 311 from escaping from the movable channel 321.

[0060] The movable channel 321 provides ample accommodation space for the elastic member 330 in the moving direction and radial direction of the movable portion 311, ensuring that the elastic member 330 can maintain an appropriate gap with the inner wall of the movable channel 321 when elastically contracting, whether in the maximum compression state or the fully stretched state, thereby avoiding performance degradation or damage of the elastic member 330 due to excessive extrusion or collision.

[0061] The limiting portion 340 is configured to be integrally connected to the inner wall of the movable channel 321. For example, the limiting portion 340 in the clamping structure 300 connected to the support member 210 is arranged at the end of the base 320 facing away from the support member 210. The limiting portion 340 protrudes relative to the inner wall of the movable channel 321, and limits the movable portion 311 when the movable portion 311 moves to the end of the movable channel 321. In another embodiment, the clamping structure 300 also includes a retaining spring, and a groove 323 is provided on the inner wall of the movable channel 321. Part of the retaining spring is clamped in the groove 323, and the part of the retaining spring protruding into the interior of the movable channel 321 forms a limiting portion 340; the retaining spring is installed in the groove 323 in a detachable manner. When the compression pad 310 and the base 320 are assembled, the movable portion 311 can be inserted into the movable channel 321 first, and then the retaining spring can be clamped into the groove 323 to limit the movable portion 311, so that the assembly of the compression pad 310 and the base 320 is more convenient.

[0062] The compression pad 310 also includes a connecting portion 313, which is disposed at the end of the movable portion 311 facing away from the clamping portion 312. The outer diameter of the connecting portion 313 is smaller than that of the movable portion 311, and the connecting portion 313 is connected to one end of the elastic member 330. The connecting portion 313 prevents the movable portion 311 from moving within the movable channel 321 and constrains one end of the elastic member 330 to prevent the elastic member 330 from bending or twisting during elastic expansion and contraction, thereby preventing interference with the inner wall of the movable channel 321 and hindering the movement of the movable portion 311 within the movable channel 321.

[0063] The elastic member 330 can be configured as a flexible member with elastic expansion and contraction capabilities, such as a spring, a spring, or an elastic pad. For example, if the elastic member 330 is configured as a spring, one end of the spring is connected to the inner wall of the base 320 or the inner wall of the support member 210, and the other end is sleeved on the connecting portion 313. Exemplarily, the movable channel 321 extends through both ends of the base 320, with one end of the base 320 connected to the side of the support member 210. One end of the elastic member 330 abuts the support member 210, and the other end is sleeved on the connecting portion 313. Alternatively, in another embodiment, the movable channel 321 passes through one end of the base 320 and forms an opening 324, and the opening 324 allows the clamping portion 312 to extend out. The other end of the movable channel 321 is closed and forms a limiting wall 325, and the two ends of the elastic member 330 are respectively connected to the limiting wall 325 and the connecting portion 313; it can be understood that in this embodiment, the elastic member 330 and the compression pad 310 can be pre-installed in the base 320, so that the clamping structure 300 can be installed on the support member 210 as an integral structure, and the assembly between the clamping structure 300 and the support member 210 is more convenient.

[0064] In the present invention, the cross-sectional shapes of the movable portion 311 and the movable channel 321 are both circular. When the valve discs on both sides are not centered, the movable portion 311 tilts in the movable gap 322 and swings freely in the radial direction to adapt to the skewed shape of the valve disc. The inner wall of the movable channel 321 can withstand radial pressure and evenly distribute the load.

[0065] Furthermore, an anti-slip pad is provided at one end of the clamping portion 312 facing away from the movable portion 311. The anti-slip pad has a certain deformation capacity, so that the clamping portion 312 and the valve disc have a higher bonding strength, thereby increasing the friction between the clamping portion 312 and the valve disc, and further improving the stability of the clamping structure 300 in clamping the valve disc.

[0066] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. In addition, the embodiments of the present invention and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. Valve disc compression tool, characterized in that, The valve disc comprises a first adjustment component and two spaced-apart support components, wherein a mounting space for accommodating the valve disc is formed between the two support components, and both ends of the first adjustment component are respectively connected to the two support components for adjusting the distance between the two support components; the support component comprises a support member; and At least one clamping structure, the clamping structure being disposed in the installation space and configured to abut against the valve disc, the clamping structure comprising a compression pad, a base, and an elastic member, the base being connected to the support member, the base having a movable channel therein, the compression pad being slidably connected within the movable channel, and the elastic member having two ends respectively connected to an inner wall of the movable channel and the compression pad; There is a movable gap between the compression pad and the inner wall of the movable channel, and the elastic member provides the compression pad with an elastic force toward the valve disc, so that the compression pad abuts against the valve disc.

2. The valve disc compression tool according to claim 1, characterized in that: The compression pad comprises a moving portion and a clamping portion, wherein the moving portion is slidably connected in the moving channel and is connected to the elastic member, and the movable gap is formed between the side wall of the moving portion and the inner wall of the moving channel, and the clamping portion is connected to an end of the moving portion away from the elastic member and extends out of the moving channel; Wherein, a limiting portion is protruding from the inner wall of the moving channel, and the outer diameter of the limiting portion is larger than the outer diameter of the clamping portion, so as to limit the axial direction of the moving portion.

3. The valve disc compression tool according to claim 2, characterized in that: The clamping structure further includes a clamping spring. The inner wall of the movable channel is provided with a groove. Part of the clamping spring is clamped in the groove. The part of the clamping spring protruding into the interior of the movable channel forms the limiting portion.

4. The valve disc compression tool according to claim 2 or 3, characterized in that: The compression pad also includes a connecting portion connected to an end of the moving portion facing away from the clamping portion. The outer diameter of the connecting portion is smaller than the outer diameter of the moving portion. The connecting portion is connected to one end of the elastic member.

5. The valve disc compression tool according to claim 4, characterized in that: One end of the movable channel forms an opening for allowing the clamping portion to extend, and the other end of the movable channel is closed and forms a limiting wall. Both ends of the elastic member are respectively connected to the limiting wall and the connecting portion.

6. The valve flap compression tool according to claim 2 or 3, characterized in that: The cross-sectional shape of the moving portion is circular, and the cross-sectional shape of the moving channel is circular.

7. The valve flap compression tool according to claim 2 or 3, characterized in that: An anti-slip pad is provided on one end of the clamping portion facing away from the moving portion.

8. The valve flap compression tool according to any one of claims 1 to 3, characterized in that: The first adjustment assembly includes a first adjustment handle and a first adjustment screw and a second adjustment screw respectively threadedly connected to the opposite ends of the first adjustment handle, and the first adjustment screw and the second adjustment screw can move toward or away from each other following the rotation of the first adjustment handle; the end of the first adjustment screw facing away from the first adjustment handle is connected to the support member of one of the support assemblies, and the end of the second adjustment screw facing away from the first adjustment handle is connected to the support member of the other support assembly.

9. The valve disc compression tool according to claim 1, characterized in that: The valve flap compression tool also includes a second adjustment component. The first adjustment component and the second adjustment component are parallel to each other and are spaced apart on the same side of the clamping structure. Both ends of the second adjustment component are rotatably connected to the two support components.

10. The valve disc compression tool according to claim 9, characterized in that The second adjustment assembly includes a second adjustment handle, and a third adjustment screw and a fourth adjustment screw respectively threadedly connected to opposite ends of the second adjustment handle, and the third adjustment screw and the fourth adjustment screw can move toward or away from each other following the rotation of the second adjustment handle; One end of the third adjusting screw facing away from the second adjusting handle is rotatably connected to the support member of one of the supporting assemblies, and one end of the fourth adjusting screw facing away from the second adjusting handle is rotatably connected to the support member of the other supporting assembly.

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