Flange dismounting and mounting structure

Abstract

The utility model discloses a flange disassembly and assembly structure, which comprises a connecting assembly, a pressing plate and a fastening assembly, the pressing plate is located on the surface of a first flange, the connecting assembly penetrates through the pressing plate, the first flange, a valve and a second flange, the pressing plate is provided with a fastening hole capable of being matched with the fastening assembly, and the fastening assembly is embedded in the fastening hole. And the valve is fastened with the first flange and the second flange through the acting force of the fastening assembly abutting against the upper surface of the first flange and the counter-acting force of the fastening assembly on the pressing plate. When the valve is assembled and disassembled, a tool for fixing a bolt in the prior art is omitted, so that the valve can be easily assembled and disassembled in a narrow space. And when the fastening assembly is damaged, the fastening assembly is only taken down from the fastening hole to be maintained or replaced, and the whole front pipeline does not need to be dismantled. In other words, the flange dismounting and mounting structure solves the technical problems that a traditional dismounting and mounting mode is low in working efficiency and inconvenient to dismount and mount.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, in particular to a flange disassembly and assembly structure. Background Art

[0002] The traditional installation method of the front pipeline valve is: fixing the valve between the flanges of the front pipeline through bolts and nuts. Since the front pipeline is located under the reaction chamber and there are many process pipelines and cables around, the operating space is very narrow. When installing bolts, tools must be used with both hands at the same time, locking or loosening the nuts while fixing the bolt heads. For the positions blocked by process pipelines or cables, only blind operation or multiple adjustments of the tool position from the side can be carried out, resulting in high labor intensity and low work efficiency. Moreover, in case of damaged screw threads or adhesion between the nut and the screw thread, since grinding wheels cannot be used for cutting in the semiconductor clean workshop, and often due to interference of pipelines and cables beside the front pipeline, cutting tools such as grinding wheels cannot enter the disassembly and demolition positions of the bolts and nuts, and the entire front pipeline can only be removed and sent out for repair.

[0003] That is to say, for the installation and disassembly of the front pipeline valve, there is currently no special disassembly and assembly structure to achieve the quick disassembly and assembly of the valve, and the traditional disassembly and assembly method has technical problems of low work efficiency and inconvenient disassembly and assembly. Summary of the Utility Model

[0004] The embodiment of the utility model provides a flange disassembly and assembly structure, which solves the technical problems of low work efficiency and inconvenient disassembly and assembly existing in the traditional disassembly and assembly method.

[0005] To solve the above problems, according to one aspect of the present application, the utility model provides a flange disassembly and assembly structure for installing a valve between a first flange and a second flange. The flange disassembly and assembly structure includes a connection component, a pressing plate, and a fastening component. The pressing plate is located on the surface of the first flange. The connection component passes through the pressing plate, the first flange, the valve, and the second flange. The pressing plate has fastening holes that can cooperate with the fastening component. The fastening component is embedded in the fastening holes. The fastening component realizes the fastening of the valve to the first flange and the second flange through the acting force of abutting against the upper surface of the first flange and the reaction force of the fastening component on the pressing plate.

[0006] In some embodiments, the fastening component includes a fastening bolt and a floating screw sleeve. The floating screw sleeve has a clamping plane, and the clamping plane is clamped with the side wall of the fastening hole. The fastening bolt cooperates with the floating screw sleeve.

[0007] In some embodiments, the fastening bolt and the floating screw sleeve are in cooperation through trapezoidal threads.

[0008] In some embodiments, the clamping plane is a groove formed on the side surface of the floating nut, the fastening hole is an oblong hole with a step, the step is close to the upper surface of the pressing plate, and the step can be clamped in the groove.

[0009] In some embodiments, the connection assembly includes a connecting rod, a first limiting unit, and a second limiting unit. The first limiting unit and the second limiting unit are respectively located at two ends of the connecting rod. When the connecting rod passes through the pressing plate, the first flange, the valve, and the second flange, the first limiting unit and the second limiting unit are respectively located on the upper surface of the pressing plate and the lower surface of the second flange to prevent axial movement of the connecting rod.

[0010] In some embodiments, the first limiting unit includes a movable baffle. The movable baffle has an oblong hole. The movable baffle is inserted at the top end of the connecting rod through a connecting member, and the movable baffle can rotate at the top end of the connecting rod through the connecting member, so that the movable baffle has a first state capable of passing through the pressing plate, the first flange, the valve, and the second flange, and a second state for limiting.

[0011] In some embodiments, the second limiting unit is a flange provided at the bottom of the connecting rod; and / or the connecting rod is a telescopic connecting rod.

[0012] In some embodiments, the pressing plate, the first flange, the valve, and the second flange are all provided with through holes, and the positions of the through holes correspond to each other. The connecting rod passes through the through holes on the pressing plate, the first flange, the valve, and the second flange; the movable baffle has a first state capable of passing through the through holes, and a second state of being stuck on the upper surface of the through hole of the pressing plate.

[0013] In some embodiments, the movable baffle is a rectangular structure. When the long side of the movable baffle is horizontally arranged, it can be clamped on the upper surface of the through hole of the pressing plate. When the long side of the movable baffle is vertically arranged, it can pass through the through hole.

[0014] In some embodiments, there are multiple pressing plates. The multiple pressing plates are evenly distributed along the circumferential direction around the upper surface of the first flange, and each pressing plate has a corresponding connection assembly and fastening assembly.

[0015] Compared with the prior art, the flange disassembly and assembly structure of the present utility model has the following beneficial effects:

[0016] The flange disassembly and assembly structure provided by the utility model is used for installing a valve between a first flange and a second flange. The flange disassembly and assembly structure comprises a connecting component, a pressure plate and a fastening component. The pressure plate is located on the surface of the first flange. The connecting component passes through the pressure plate, the first flange, the valve and the second flange. The pressure plate has a fastening hole that can cooperate with the fastening component. The fastening component is embedded in the fastening hole. The fastening component achieves the fastening of the valve to the first flange and the second flange by the force of the abutting surface of the first flange and the reaction force of the fastening component on the pressure plate.

[0017] When installing the valve, first place the pressure plate on the upper surface of the first flange, and pass the connecting assembly through the pressure plate, the first flange, the valve and the second flange to connect the pressure plate, the first flange, the valve and the second flange together. Then, place the fastening assembly in the fastening hole, and operate the fastening assembly along the first direction, so that the lower end of the fastening assembly can abut against the upper surface of the first flange. As the operation proceeds, the pressure of the fastening assembly on the first flange becomes greater and greater, and then the valve is pressed through the first flange to achieve the installation of the valve. When the valve needs to be removed, operate the fastening assembly along the second direction. Since the fastening hole on the pressure plate can cooperate with the fastening assembly, the cooperation here can be understood as one part of the fastening assembly can be fixed together with the fastening hole. In this case, since the fixation is achieved by relying on the structure itself, the tools used to fix the bolts in the traditional technology are omitted, so that the valve can be easily installed and disassembled in a small space. In addition, the fastening assembly in the utility model is a whole, which only cooperates with the fastening hole of the pressure plate, and has no connection relationship with the first flange, the valve and the second flange. Therefore, when the fastening assembly is damaged, it is only necessary to remove the fastening assembly from the fastening hole for repair or replacement, without removing the entire front pipe. In other words, the flange disassembly and assembly structure provided by the utility model solves the technical problems of low work efficiency and inconvenient disassembly and assembly in the traditional disassembly and assembly method.

[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1It is a schematic structural diagram of a flange disassembly and assembly structure provided by an embodiment of the present utility model;

[0021] Figure 2 It is a partial exploded view of a flange disassembly and assembly structure provided by an embodiment of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of a connection assembly in a flange disassembly and assembly structure provided by an embodiment of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of a pressing plate in a flange disassembly and assembly structure provided by an embodiment of the present utility model;

[0024] Figure 5 It is a top view of a pressing plate in a flange disassembly and assembly structure provided by an embodiment of the present utility model;

[0025] Figure 6 It is another partial exploded view of a flange disassembly and assembly structure provided by an embodiment of the present utility model;

[0026] Figure 7 It is another schematic structural diagram of a connection assembly in a flange disassembly and assembly structure provided by an embodiment of the present utility model.

[0027] Reference numerals:

[0028] 1, valve; 2, first flange; 3, second flange; 4, connection assembly; 41, connecting rod; 42, first limiting unit; 43, second limiting unit; 421, movable baffle; 422, kidney-shaped hole; 423, connecting piece; 5, pressing plate; 51, fastening hole; 52, step; 6, fastening assembly; 61, fastening bolt; 62, floating nut; 63, clamping plane; 7, through hole; 8, pre-pipeline. Detailed implementation manners

[0029] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following combines the drawings and preferred embodiments to detail the specific implementation manners, structures, features, and their effects of the application according to the present utility model. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0030] In the description of the present utility model, it should be clear that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence; the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "horizontal", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model, rather than meaning that the indicated device or element must have a specific orientation or position, so it cannot be understood as a limitation to the present utility model.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the pre-pipeline, in order to install the valve, generally, a flange is provided above and below the valve respectively, and the valve is clamped between the two flanges. Then, bolts pass through the valve and the two flanges. When tightening, the lower section of the bolt is fixed by a nut, and at the same time, the head of the bolt is tightened. That is to say, when installing the valve, two tools are required to operate simultaneously. One tool is used to fix the bolt, and the other tool is used to turn the head of the bolt. Since the pre-pipeline is located below the reaction chamber and there are many process pipelines and cables around, the operating space is very narrow. When fixing the head of the bolt and locking or loosening the nut at the same time, the positions blocked by the process pipelines or cables can only be blindly operated or the tool position can be adjusted from the side multiple times, resulting in low work efficiency and inconvenient disassembly and assembly. Moreover, in case of damaged threads or adhesion between the nut and the threads, since a grinding wheel cannot be used for cutting in the semiconductor clean workshop, and often due to interference of pipelines and cables beside the pre-pipeline, cutting tools such as grinding wheels cannot enter the breaking position of the bolt and the nut, and the entire pre-pipeline has to be removed.

[0033] In view of the above technical problems, the present utility model is designed from the following two aspects. First, the use of one of the tools is eliminated, reducing the operation difficulty and enabling easy installation and disassembly of the valve in a narrow space. Second, the components with threads are designed as a whole and are not connected to the valve and the flange. In this way, when the threads are damaged or the nut adheres to the threads, this whole can be directly removed, and there is no need to remove the entire pre-pipeline.

[0034] To better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0035] Embodiment 1

[0036] An embodiment of the present utility model provides a flange disassembly and assembly structure, as Figure 1-7 shown, for installing a valve 1 between a first flange 2 and a second flange 3. The flange disassembly and assembly structure includes a connection component 4, a pressing plate 5, and a fastening component 6. The pressing plate 5 is located on the surface of the first flange 2. The connection component 4 passes through the pressing plate 5, the first flange 2, the valve 1, and the second flange 3. The pressing plate 5 has a fastening hole 51 that can cooperate with the fastening component 6. The fastening component 6 is embedded in the fastening hole 51. The fastening component 6 realizes the fastening of the valve 1 to the first flange 2 and the second flange 3 through the acting force of abutting against the upper surface of the first flange 2 and the reaction force of the fastening component 6 on the pressing plate 5.

[0037] The first flange 2, the valve 1, and the second flange 3 are all circular ring structures with a certain thickness, and the three are sleeved on a pre - installed pipeline 8 from top to bottom in sequence. The pressing plate 5 is arranged on the circular ring end face of the first flange 2. The connection component 4 is mainly used to realize the connection of the first flange 2, the valve 1, and the second flange 3, facilitating subsequent fixation. After the pressing plate 5 and the fastening component 6 cooperate, the fastening of the valve 1 can be realized.

[0038] With the above - mentioned structure, when installing the valve 1, first place the pressing plate 5 on the upper surface of the first flange 2. The connection component 4 passes through the pressing plate 5, the first flange 2, the valve 1, and the second flange 3 to connect the pressing plate 5, the first flange 2, the valve 1, and the second flange 3 together. Then, the fastening component 6 is placed in the fastening hole 51. When operating the fastening component 6 along the first direction, the lower end of the fastening component 6 can abut against the upper surface of the first flange 2. As the operation progresses, the pressure of the fastening component 6 on the first flange 2 becomes greater and greater, and thus the valve 1 is pressed through the first flange 2, realizing the installation of the valve 1. When it is necessary to disassemble the valve 1, operate the fastening component 6 along the second direction.

[0039] In this embodiment, since the fastening hole 51 on the pressing plate 5 can cooperate with the fastening assembly 6, the cooperation here can be understood as one part of the fastening assembly 6 can be fixed together with the fastening hole 51. In this case, since the fixation is achieved by relying on the structure itself, the tool used for fixing bolts in the traditional technology is omitted, so that the valve 1 can be easily installed and disassembled in a small space. In addition, in this embodiment, the fastening assembly 6 is a whole, which only cooperates with the fastening hole 51 of the pressing plate 5, and has no connection relationship with the first flange 2, the valve 1 and the second flange 3. Therefore, when the fastening assembly 6 is damaged, it only needs to be removed from the fastening hole 51 for repair or replacement, and there is no need to remove the entire front pipe 8.

[0040] In a specific embodiment, Figure 2 As shown, the fastening assembly 6 includes a fastening bolt 61 and a floating screw sleeve 62 . The floating screw sleeve 62 has a clamping plane 63 . The clamping plane 63 is clamped with the side wall of the fastening hole 51 . The fastening bolt 61 cooperates with the floating screw sleeve 62 .

[0041] The fastening assembly 6 consists of a fastening bolt 61 and a floating screw sleeve 62. The fastening bolt 61 is a movable part that can rotate. The valve 1 can be installed and disassembled by rotating in different directions. The floating screw sleeve 62 is a fixed part that cooperates with the fastening bolt 61 on the one hand, and fixes itself by cooperating with the fastening hole 51 on the other hand, without the need for additional tools.

[0042] When installing the valve 1, first place the floating screw sleeve 62 in the fastening hole 51, and make the clamping plane 63 of the floating screw sleeve 62 clamp the side wall of the fastening hole 51. Since the pressure plate 5 has been fixed with the first flange 2, the valve 1 and the second flange 3 through the connecting assembly 4, the floating screw sleeve 62 is also fixed by the cooperation of the clamping plane 63 and the fastening hole 51. It should be noted that the bottom of the floating screw sleeve 62 is not in contact with the upper surface of the first flange 2. Then the fastening bolt 61 is inserted into the floating screw sleeve 62, and the fastening bolt 61 is rotated along the first direction, and the fastening bolt 61 moves downward in the floating screw sleeve 62 until its bottom abuts against the upper surface of the first flange 2 and applies a certain pressure to the first flange 2, so that the installation of the valve 1 is completed. In the whole installation process, the cooperation of the clamping plane 63 and the fastening hole 51 enables the floating screw sleeve 62 to be fixed without the need for additional tools. When disassembling the valve 1, the fastening bolt 61 is rotated along the second direction, and the fastening bolt 61 moves upward in the floating screw sleeve 62, and the pressure applied to the first flange 2 disappears. Then, the connecting assembly 4 is removed, and disassembly can be easily achieved.

[0043] Moreover, in this embodiment, if the threads of the fastening bolt 61 and the floating nut 62 are damaged or adhered, only the floating nut 62 needs to be removed from the fastening hole 51, without affecting other structures.

[0044] In a specific embodiment, the fastening bolt 61 and the floating nut 62 are in trapezoidal thread fit. The trapezoidal thread is a type of thread with an isosceles trapezoidal tooth profile and a tooth profile angle of 30°. Compared with ordinary threads, the trapezoidal thread has a smaller torsional angle, which makes fastening and disassembly easier. If trapezoidal threads are used for assembly, the consumption of time and energy can be greatly reduced, and thread damage and length loss can be avoided. In addition, the trapezoidal thread can maintain better stability because its head is in a wider trapezoidal shape, so it will be more stable when connecting and disconnecting and is not easy to slide. Additionally, different from ordinary threads, when using trapezoidal threads, due to their unique shape, a greater pressure can be generated at the thread head, and the surface contact area of the thread is increased. In this way, the friction performance can be greatly improved, preventing the thread from loosening and falling off. Moreover, the wide head of the trapezoidal thread greatly improves the operation efficiency. During installation, it is not necessary to rotate the thread too much to easily achieve fixation and connection, greatly saving time and labor costs. The same is true for disassembly, without the need for multiple turns like traditional threads.

[0045] In a specific embodiment, as Figure 2 shown, the clamping plane 63 is a groove formed on the side surface of the floating nut 62. As Figure 5 shown, the fastening hole 51 is a kidney-shaped hole with a step 52, and the step 52 is close to the upper surface of the pressing plate 5. The step 52 can be clamped in the groove. The floating nut 62 has a certain thickness, with trapezoidal threads on its inner surface and a groove on its outer surface, and the groove does not penetrate the thickness of the floating nut 62. The fastening hole 51 is a kidney-shaped hole with a step 52, and the step 52 is close to the upper surface of the pressing plate 5. That is to say, assuming that the fastening hole 51 is axially divided into an upper fastening hole and a lower fastening hole, the widths of the upper fastening hole and the lower fastening hole are different, thus forming the step 52, and the width of the upper fastening hole is smaller than that of the lower fastening hole, so that the step 52 can be close to the upper surface of the pressing plate 5. In this embodiment, the fixation of the floating nut 62 is ingeniously achieved through the simple cooperation of the groove and the step 52, with a delicate structure and convenient operation.

[0046] In addition, there are two grooves on the side surface of the floating nut 62, and the two grooves are symmetrically arranged.

[0047] In a specific embodiment, as Figure 3As shown in the figure, the connecting component 4 includes a connecting rod 41, a first limiting unit 42 and a second limiting unit 43. The first limiting unit 42 and the second limiting unit 43 are respectively located at both ends of the connecting rod 41. When the connecting rod 41 passes through the pressing plate 5, the first flange 2, the valve 1 and the second flange 3, the first limiting unit 42 and the second limiting unit 43 are respectively located on the upper surface of the pressing plate 5 and the lower surface of the second flange 3 to prevent the axial movement of the connecting rod 41. After the connecting rod 41 connects the pressing plate 5, the first flange 2, the valve 1 and the second flange 3 together, the first limiting unit 42 can prevent the connecting rod 41 from moving downward and disengaging from the pressing plate 5, the first flange 2, the valve 1 and the second flange 3, and the second limiting unit 43 can prevent the connecting rod 41 from moving upward and disengaging from the pressing plate 5, the first flange 2, the valve 1 and the second flange 3.

[0048] In a specific embodiment, the first limiting unit 42 includes a movable baffle 421. The movable baffle 421 has an oval hole 422. The movable baffle 421 is inserted at the top end of the connecting rod 41 through a connecting member 423, and the movable baffle 421 can rotate at the top end of the connecting rod 41 through the connecting member 423, so that the movable baffle 421 has a first state in which it can pass through the pressing plate 5, the first flange 2, the valve 1 and the second flange 3, and a second state for limiting. Among them, the connecting member is a cylindrical pin. At the top of the connecting rod 41, an installation groove is axially opened. The movable baffle 421 is arranged in the installation groove. The movable baffle 421 is provided with an oval hole 422, and fixing holes are arranged on the groove wall of the installation groove. After the movable baffle 421 is arranged on the installation groove, the connecting member 423 passes through the fixing hole and the oval hole 422, thus realizing the arrangement of the movable baffle 421 at the top end of the connecting rod 41. And, in this embodiment, the movable baffle 421 can rotate in the installation groove of the connecting rod 41 through the connecting member 423. That is to say, in the first state, the movable baffle 421 passes through the second flange 3, the valve 1, the first flange 2 and the pressing plate 5 from bottom to top in sequence, and then switches to the second state, which can realize the limit and prevent it from moving downward and disengaging from the pressing plate 5, the first flange 2, the valve 1 and the second flange 3. The fastening bolt 61 is inserted into the floating sleeve 62. When the fastening bolt 61 is rotated along the first direction, the fastening bolt 61 moves downward in the floating sleeve 62. The fastening bolt 61 generates an upward acting force perpendicular to the pressing plate 5 on the pressing plate 5. Under the action of the movable baffle 421 in the second state limiting the pressing plate 5, a reverse reaction force is formed, thereby realizing the fastening between the pressing plate 5, the first flange 2, the valve 1 and the second flange 3.

[0049] In a specific embodiment, the second limiting unit 43 is a flange provided at the bottom of the connecting rod 41. The connecting rod 41 is a columnar structure, and the flange is also a columnar structure, and the diameter of the flange is larger than the diameter of the connecting rod 41.

[0050] In a specific embodiment, the connecting rod 41 is a telescopic connecting rod. That is to say, the length of the connecting rod 41 can be adjusted according to the actual situation. For example, when the thickness of the valve 1 is relatively large, the connecting rod 41 can be stretched, and when the thickness of the valve 1 is relatively small, the connecting rod 41 can be shortened. There are various ways to adjust the length of the connecting rod 41. For example, the connecting rod includes a first connecting rod and a second connecting rod. The first connecting rod is sleeved outside the second connecting rod. The inner surface of the first connecting rod has a groove, and the outer surface of the second connecting rod has a plurality of protrusions arranged at intervals. The cooperation of different protrusions and the groove can make the length of the connecting rod 41 different.

[0051] In a specific embodiment, the pressing plate 5, the first flange 2, the valve 1, and the second flange 3 are all provided with through holes 7, and the positions of the through holes 7 correspond to each other. The connecting rod 41 passes through the through holes on the pressing plate 5, the first flange 2, the valve 1, and the second flange 3; the movable baffle 421 has a first state in which it can pass through the through hole 7, and a second state in which it is stuck on the upper surface of the through hole 7 of the pressing plate 5. Specifically, on both sides of the fastening hole 51, the pressing plate 5 is respectively provided with a pressing plate through hole. Corresponding to the position of the pressing plate through hole, a first flange through hole, a valve through hole, and a second flange through hole are respectively provided at corresponding positions on the first flange 2, the valve 1, and the second flange 3. The pressing plate through hole, the first flange through hole, the valve through hole, and the second flange through hole are of the same size. When installing the valve 1, first set the movable baffle 421 to the first state. At this time, the movable baffle 421 passes through the second flange through hole, the valve through hole, the first flange through hole, and the pressing plate through hole from bottom to top in sequence. Then set the movable baffle 421 to the second state. At this time, the movable baffle 421 just gets stuck on both sides of the pressing plate through hole, realizing the limit.

[0052] In a specific embodiment, the movable baffle 421 is of a rectangular structure. When the long side of the movable baffle 421 is horizontally arranged, it can be clamped on the upper surface of the through hole 7 of the pressing plate 5. When the long side of the movable baffle 421 is vertically arranged, it can pass through the through hole 7. When the long side of the movable baffle 421 is horizontally arranged, since its long side is larger than the pressing plate through hole, it can be clamped on the upper surface of the pressing plate through hole to realize the limit. When the long side of the movable baffle 421 is vertically arranged, since the length of its short side is smaller than the second flange through hole, the aperture sizes of the pressing plate through hole, the first flange through hole, the valve through hole, and the second flange through hole, it can pass through the second flange through hole, the pressing plate through hole, the first flange through hole, the valve through hole, and the second flange through hole in sequence, realizing the connection of the pressing plate 5, the first flange 2, the valve 1, and the second flange 3 together.

[0053] In a specific embodiment, there are multiple pressing plates 5, and the multiple pressing plates 5 are evenly distributed circumferentially around the upper surface of the first flange 2, and each pressing plate 5 has a corresponding connecting component 4 and fastening component 6. The even circumferential distribution of the multiple pressing plates 5 around the upper surface of the first flange 2 can make the force applied by the corresponding fastening component 6 to the first flange 2 more uniform, thereby making the installation of the valve 1 more reliable.

[0054] In addition, the flange disassembly and assembly structure provided in this embodiment is used for a through-hole connection structure and can be adapted to through-hole flanges such as circular, square, rectangular, and elliptical. At the same time, it is suitable for the case where the outer diameter of the flange is flush with or smaller than that of the valve.

[0055] For the flange disassembly and assembly structure provided in this embodiment, the valve 1 is clamped between the first flange 2 and the second flange 3, the pressing plate 5 is located on the upper surface of the first flange 2, and the pressing plate through-hole is concentric with the first flange through-hole, the second flange through-hole, and the valve through-hole; rotate the movable baffle 421 so that its long side is parallel to the axis of the connecting rod 41, as Figure 7 shown. After that, the connecting rod 41 passes through the pressing plate 5, the first flange 2, the valve 1, and the second flange 3, and then rotate the movable baffle 421 again so that its long side is perpendicular to the axis of the connecting rod 41, as Figure 3 shown; then, the fastening bolt 61 is screwed into the floating sleeve 62, and the thread head shall not exceed the floating sleeve. Then, the floating sleeve 62 is inserted into the waist-shaped hole of the pressing plate 5, and the clamping plane 63 contacts the straight side of the smaller waist-shaped hole of the pressing plate 5 and is inserted to the bottom; finally, use a tool to rotate the fastening bolt 61 to realize the operation of clamping the valve 1 through the first flange 2 and the second flange 3. The disassembly method is opposite to the above actions.

[0056] The flange disassembly and assembly structure provided in this embodiment can quickly disassemble and assemble the valve, and can be extended to all through-hole clamping structures connected by bolts and nuts. At the same time, it reduces the valve disassembly and assembly time, improves the maintenance efficiency, reduces the operation difficulty, reduces the working intensity of the operator, and improves the working environment.

[0057] In summary, it is easy for those skilled in the art to understand that, on the premise of no conflict, the above-mentioned advantageous technical features can be freely combined and superimposed.

[0058] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A flange disassembly and assembly structure, used to install a valve between a first flange and a second flange, characterized in that: The flange disassembly and assembly structure includes a connecting component, a pressure plate and a fastening component. The pressure plate is located on the surface of the first flange. The connecting component passes through the pressure plate, the first flange, the valve and the second flange. The pressure plate has a fastening hole that can cooperate with the fastening component. The fastening component is embedded in the fastening hole. The fastening component achieves the fastening of the valve to the first flange and the second flange through the force of the fastening component abutting against the upper surface of the first flange and the reaction force of the fastening component on the pressure plate.

2. The flange disassembly and assembly structure according to claim 1, characterized in that: The fastening assembly comprises a fastening bolt and a floating screw sleeve. The floating screw sleeve is provided with a clamping plane, the clamping plane is clamped with the side wall of the fastening hole, and the fastening bolt cooperates with the floating screw sleeve.

3. The flange disassembly and assembly structure according to claim 2, characterized in that: The fastening bolt and the floating screw sleeve are matched through trapezoidal threads.

4. The flange disassembly and assembly structure according to claim 2, characterized in that: The clamping plane is a groove opened on the side of the floating screw sleeve, and the fastening hole is a waist-shaped hole with a step, the step is close to the upper surface of the pressure plate, and the step can be clamped in the groove.

5. The flange disassembly and assembly structure according to claim 1, characterized in that: The connecting assembly includes a connecting rod, a first limiting unit and a second limiting unit, wherein the first limiting unit and the second limiting unit are respectively located at two ends of the connecting rod, and when the connecting rod passes through the pressure plate, the first flange, the valve and the second flange, the first limiting unit and the second limiting unit are respectively located on the upper surface of the pressure plate and the lower surface of the second flange to prevent axial movement of the connecting rod.

6. The flange disassembly and assembly structure according to claim 5, characterized in that: The first limiting unit includes a movable baffle having a waist-shaped hole. The movable baffle is inserted at the top end of the connecting rod through a connecting piece, and the movable baffle can be rotated at the top end of the connecting rod through the connecting piece, so that the movable baffle has a first state in which it can pass through the pressure plate, the first flange, the valve and the second flange, and a second state for limiting.

7. The flange disassembly and assembly structure according to claim 6, characterized in that: The second limiting unit is a flange arranged at the bottom of the connecting rod; and / or the connecting rod is a telescopic connecting rod.

8. The flange disassembly and assembly structure according to claim 7, characterized in that: The pressure plate, the first flange, the valve and the second flange all have through holes, and the positions of the through holes correspond. The connecting rod passes through the through holes on the pressure plate, the first flange, the valve and the second flange. The movable baffle has a first state in which it can pass through the through hole, and a second state in which it is stuck on the upper surface of the through hole of the pressure plate.

9. The flange disassembly and assembly structure according to claim 8, characterized in that: The movable baffle is a rectangular structure. When the long side of the movable baffle is horizontally arranged, it can be clamped on the upper surface of the through hole of the pressure plate. When the long side of the movable baffle is vertically arranged, it can pass through the through hole.

10. The flange disassembly and assembly structure according to any one of claims 1 to 9, characterized in that: There are a plurality of the pressing plates, which are evenly distributed around the upper surface of the first flange in the circumferential direction, and each of the pressing plates has a corresponding connecting component and a fastening component.

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