Adjustable mounting structure and wafer type butterfly valve comprising same

Abstract

The invention relates to the technical field of butterfly valve installation, in particular to an adjustable installation structure and a double-clip type butterfly valve comprising the same, the adjustable installation structure comprises pipelines arranged on the two sides and flanges movably clamped with the pipelines, and further comprises a valve body movably arranged between the two flanges, the two sides of the valve body movably abut against the pipelines on the two sides respectively, and the valve body is arranged between the two flanges. A plurality of mounting holes are formed in the base; the plurality of clamping holes are formed in the flange and are flush with the mounting hole; the screw movably penetrates through the mounting hole and the clamping hole; and the limiting assembly is arranged on one side of one flange and used for clamping and limiting the valve body, according to the adjustable mounting structure, the valve body can be preliminarily limited and fixed through the limiting assembly, and the stability of the valve body in the mounting process is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of butterfly valve installation technology, and in particular to an adjustable installation structure and a wafer-type butterfly valve incorporating the structure. Background Technology

[0002] The wafer-type butterfly valve is a widely used "on / off control valve" in industrial pipelines. Its core advantages are its compact structure, light weight, and small installation space requirements. It controls the flow of media by rotating the butterfly plate driven by the valve stem and is suitable for various media such as water, gas, oil, and mildly corrosive fluids.

[0003] In the actual installation process of existing wafer-type butterfly valves, the traditional installation method generally adopts the operation mode of "manual lifting and positioning + flange docking and locking". That is, first, the pipeline on one side is fixed to the flange, and the operator needs to manually lift the butterfly valve to maintain its relative stability with the fixed flange. Then, the pipeline and flange on the other side are moved to the other side of the butterfly valve, aligned, and bolts are inserted to complete the locking. During the manual lifting process, factors such as hand tremors, uneven force application, or fatigue of the operator can easily cause the butterfly valve to slide axially, tilt radially, or deflect circumferentially, causing the butterfly valve mounting hole to misalign with the bolt holes of the flanges on both sides, and at the same time, increasing the coaxiality deviation between the butterfly valve water channel and the pipeline water channel. Secondly, in special scenarios such as high-altitude operations (such as pipeline wells in high-rise buildings, bridge pipelines) and installation in confined spaces (such as dense pipelines inside equipment, underground pipelines), the operator lacks a stable operating platform and support point. When manually lifting the butterfly valve, it is very easy for the butterfly valve to slip or tip over, thereby causing equipment damage. Summary of the Invention

[0004] Therefore, it is necessary to provide an adjustable mounting structure that clamps and limits the valve body during installation, and a wafer-type butterfly valve containing the above-mentioned technical problems.

[0005] The present invention provides an adjustable installation structure, including pipes on both sides and flanges that are movably engaged with the pipes, and further comprising: The valve body is movably disposed between the two flanges, and its two sides are respectively movably abutting against the pipes on both sides, and multiple mounting holes are provided on it; Multiple mounting holes are provided on the flange and are flush with the mounting holes. A screw that moves through the mounting hole and the locking hole; A limiting component is provided on one side of one of the flanges for clamping and limiting the valve body.

[0006] In one embodiment, the limiting component includes a fixing rod, which is installed on the flange on the side facing the valve body. Two clamping plates are movably sleeved on the outside of the fixing rod, with a certain gap between the two clamping plates and located on both sides of the valve body. The clamping plates movably abut against the side wall of the valve body.

[0007] In one embodiment, the flange is rotatably mounted on one side of the fixed rod, and the rotating rod is axially symmetrically provided with threads on both sides, with the two threads having opposite directions of rotation. The two clamping plates are respectively adapted to and connected to the two threads.

[0008] In one embodiment, positioning blocks are axially symmetrically fixed on both sides of the flange, located below the rotating rod, and positioning holes are opened in the positioning blocks. A positioning rod is axially symmetrically fixed on the other flange towards the valve body, and the positioning rod is movably inserted into the positioning hole.

[0009] In one embodiment, a cylinder is fixedly sleeved on the outer side of the middle part of the rotating rod. The outer side of the cylinder has straight grooves on both sides and a curved groove in the middle, which are interconnected. A limit rod is fixedly provided on the top of the positioning rod, and the end of the limit rod away from the positioning rod is slidably connected to the straight groove and the curved groove.

[0010] In one embodiment, the positioning rod has a groove at the end away from the flange, a movable block is movably installed in the groove, one side of the movable block is fixedly connected to the inner wall of the groove by a buffer spring, and the end of the movable block away from the buffer spring is movably abutting against the inner wall of the positioning hole.

[0011] In one embodiment, the top of the positioning block has a slot, a crossbar is rotatably installed in the slot, an indicator rod is fixedly sleeved on the outside of the crossbar, and both ends of the indicator rod are fixedly connected to the inner wall of the slot by torsion springs, with the torsion springs movably sleeved on the outside of the indicator rod.

[0012] In one embodiment, the positioning block has a vertical groove on the inner wall at the bottom of the slot, a ring is fixedly installed in the vertical groove, a locking rod is movably inserted through the center of the ring, the locking rod and the ring are fixedly connected by a return spring, a limit hole is opened at the top of the positioning rod, the bottom of the locking rod is movably engaged with the limit hole, and a protrusion is provided at the bottom of the indicator rod, the protrusion is movably abutting against the top of the locking rod.

[0013] In one embodiment, the indicator rod has a positioning groove at the end away from the crossbar, and a fixing plate is fixedly installed on the inner wall of the positioning block on one side of the groove. The fixing plate is fixedly connected to the positioning plate by a positioning spring on one side, and the positioning plate is slidably connected to the inner wall of the groove on one side. The positioning plate is movably engaged with the positioning groove.

[0014] In one embodiment, a horizontal groove is provided at the top of the positioning rod, and a movable frame is slidably arranged in the horizontal groove. One end of the movable frame is fixedly connected to the top of the movable block. A movable groove is provided through one side of the positioning block, and the movable frame is slidably connected to the movable groove. A lifting rod is movably arranged in the movable frame, and one side of the lifting rod is movably abutting against the positioning plate.

[0015] In one embodiment, an abutment block is fixedly provided on one side of the inner wall of the transverse groove, and an inclined groove is provided on the abutment block. A vertical rod is fixedly provided at the bottom of the lifting rod. The end of the vertical rod away from the lifting rod passes through the inner wall of the movable frame and its end is movably abutting against the abutment block and the inclined groove. The bottom of the lifting rod is elastically connected to the inner wall of the movable frame.

[0016] In one embodiment, a wafer-type butterfly valve includes the aforementioned adjustable mounting structure.

[0017] The aforementioned adjustable installation structure and the wafer-type butterfly valve containing this structure can initially limit and fix the valve body through the limiting component, ensuring the stability of the valve body during installation; the locking engagement between the locking rod and the limiting hole can ensure the connection stability between the positioning rod and the positioning block, achieving initial limiting and fixing of the flanges at both ends; the torsion spring can realize the counterclockwise rotation of the indicator rod, changing the state of the indicator rod and facilitating reminders to the operator. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Enlarged diagram of part A in the middle; Figure 3 This is a schematic diagram of the positioning rod in this invention; Figure 4 This is a schematic diagram of the clamping plate in this invention; Figure 5 This is a schematic diagram of the structure of the movable block in this invention; Figure 6 for Figure 5 Enlarged diagram of section B; Figure 7 This is a schematic diagram of the groove structure in this invention; Figure 8 This is a schematic diagram of the clamping rod in this invention; Figure 9 for Figure 8 Enlarged diagram of section C.

[0020] Figure label: 1. Pipe; 2. Flange; 201. Clip; 3. Screw; 4. Valve body; 41. Mounting hole; 5. Limiting assembly; 51. Fixing rod; 52. Clamping plate; 53. Rotating rod; 54. Thread; 6. Positioning block; 61. Positioning hole; 62. Groove; 63. Vertical groove; 64. Movable groove; 7. Positioning rod; 71. Groove; 72. Limiting hole; 73. Horizontal groove; 8. Cylindrical; 81. Straight groove; 82. Curved groove; 9. Limiting rod; 10. Movable block; 11. Buffer spring; 12. Horizontal bar; 13. Indicator rod; 131. Positioning groove; 14. Torsion spring; 15. Ring; 16. Clip; 17. Return spring; 18. Protrusion; 19. Fixing plate; 20. Positioning spring; 21. Positioning plate; 22. Movable frame; 23. Lifting rod; 24. Abutment block; 241. Inclined groove; 25. Vertical bar. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0026] The following is combined Figures 1-9 This invention describes an adjustable mounting structure and a wafer-type butterfly valve incorporating the structure.

[0027] like Figures 1-4 As shown, in one embodiment, an adjustable mounting structure includes pipes 1 disposed on both sides and flanges 2 that are movably engaged with the pipes 1, and further includes: The valve body 4 is movably disposed between two flanges 2, and its two sides are movably abutting against the pipes 1 on both sides respectively. Multiple mounting holes 41 are provided on it. The 201 slot is provided on the flange 2, and multiple slots are provided, flush with the mounting hole 41. Screw 3, movable through mounting hole 41 and locking hole 201; The limiting component 5 is located on one side of one of the flanges 2 and is used to clamp and limit the valve body 4.

[0028] Specifically, during installation, first, a flange 2 is snapped and fixed to the corresponding pipe 1. Then, one side of the valve body 4 is abutted against the pipe 1, and the flange 2 on the other side is snapped against the corresponding pipe 1 and then abutted against the other side of the valve body 4, so that the pipes 1 on both sides are aligned with the pipelines of the valve body 4. The snap holes 201 and the mounting holes 41 also correspond one by one. During the installation of the other flange 2, the valve body 4 is clamped and limited by the limiting component 5 to ensure the stability of the valve body 4 during the installation process. After both flanges 2 on both sides are connected to the valve body 4 and the valve body 4 is in a stable state, the screws 3 are screwed into the mounting holes 41 and snap holes 201 to fix the valve body 4 between the pipe 1 and the flange 2.

[0029] See Figure 3 and Figure 4 As shown, in this embodiment, the limiting component 5 includes a fixing rod 51, which is installed on the flange 2 on the side closer to the valve body 4. Two clamping plates 52 are movably sleeved on the outside of the fixing rod 51. There is a certain gap between the two clamping plates 52, and they are located on both sides of the valve body 4. The clamping plates 52 are in movable contact with the side wall of the valve body 4.

[0030] Specifically, in the initial state, there is a distance between the two clamping plates 52, and the length of this distance is greater than the thickness of the valve body 4. After the flange 2 corresponding to the clamping plate 52 is clamped to the corresponding pipe 1, one side of the valve body 4 is brought into contact with the pipe 1. At this time, the clamping plates 52 on both sides are moved laterally closer to each other along the fixing rod 51, so that the clamping plates 52 are brought into contact with both ends of the valve body 4 respectively, clamping the valve body 4 in the middle, and initially limiting and fixing the valve body 4 to ensure the relative stability of the valve body 4 during the installation process.

[0031] See Figure 3 and Figure 4 As shown, in this embodiment, the flange 2 is rotatably mounted on one side of the fixed rod 51 with a rotating rod 53. The rotating rod 53 is axially symmetrically provided with threads 54 on both sides, and the two threads 54 have opposite directions of rotation. The two clamping plates 52 are respectively adapted to and connected to the two threads 54.

[0032] Specifically, rotating the rotating rod 53 causes the threads 54 on both sides to rotate. Since the threads 54 rotate in opposite directions, the rotation of the rotating rod 53 will cause the two clamping plates 52 to move closer to each other until they come into contact with the sides of the valve body 4, thus clamping and limiting the valve body 4. Similarly, when it is necessary to release the clamping and limiting of the valve body 4, rotating the rotating rod 53 in the opposite direction will move the two clamping plates 52 away from each other, thus releasing the clamping and limiting of the valve body 4.

[0033] See Figure 2 , Figure 3 and Figure 7As shown, in this embodiment, positioning blocks 6 are axially symmetrically fixed on both sides of flange 2, located below rotating rod 53. Positioning holes 61 are opened in the positioning blocks 6. Positioning rods 7 are axially symmetrically fixed on the other flange 2 near the valve body 4. Positioning rods 7 are movably inserted into positioning holes 61.

[0034] Specifically, after the flange 2 with positioning block 6 is engaged with the pipe 1, one end of the valve body 4 abuts against it, and the flange 2 and pipe 1 on the other side abut against the other side of the valve body 4. During the abutment process, the positioning rods 7 on both sides are aligned with the positioning holes 61, and the pipe 1 and flange 2 on that side are moved towards the valve body 4. The positioning rods 7 move along the positioning holes 61 into the positioning block 6 until they abut against the inner wall of the positioning holes 61 and then stop. The stability of the connection between the flanges 2 at both ends can be improved by inserting the positioning rods 7 into the positioning holes 61.

[0035] See Figure 3 and Figure 4 As shown, in this embodiment, a cylinder 8 is fixedly sleeved on the outer side of the middle part of the rotating rod 53. A straight groove 81 located on both sides and a curved groove 82 in the middle are opened on the outer side of the cylinder 8. The three are interconnected. A limiting rod 9 is fixedly installed on the top of the positioning rod 7. The end of the limiting rod 9 away from the positioning rod 7 is slidably connected to the straight groove 81 and the curved groove 82.

[0036] Specifically, during installation, align the positioning rod 7 with the positioning hole 61, then push the flange 2 and pipe 1 towards the side closer to the valve body 4. The positioning rod 7 moves towards the inside of the positioning hole 61. During the movement of the positioning rod 7, it will drive the limiting rod 9 to move synchronously. During the movement of the limiting rod 9, it will first pass through the straight groove 81 on one side. During this process, the cylinder 8 remains stationary. Then, the limiting rod 9 moves to the curved groove 82 section. During the movement along the curved groove 82, it will drive the cylinder 8 and the rotating rod 53 to rotate, so that the clamping plates 52 on both sides move towards the center to clamp and limit the valve body 4. Subsequently, the limiting rod 9 will move to the straight groove 81 section on the other side. During this process, the cylinder 8 remains stationary, and the clamping remains in the state of clamping the valve body 4. When the limiting rod 9 moves to the end of the straight groove 81 on the other side, the end of the positioning rod 7 abuts against the inner wall of the positioning hole 61. At this time, the pipes 1 on both sides abut against the valve body 4.

[0037] See Figure 3 , Figure 5 and Figure 7 As shown, in this embodiment, a groove 71 is provided at the end of the positioning rod 7 away from the flange 2. A movable block 10 is movably installed in the groove 71. One side of the movable block 10 is fixedly connected to the inner wall of the groove 71 by a buffer spring 11. The end of the movable block 10 away from the buffer spring 11 is movably abutting against the inner wall of the positioning hole 61.

[0038] Specifically, in the initial state, part of the movable block 10 is located outside the groove 71, and the buffer spring 11 is in a normal extension and contraction state. After the positioning rod 7 is inserted into the positioning hole 61, the movable block 10 will first abut against the inner wall of the positioning hole 61. As the positioning rod 7 continues to move inward, it will be limited by the inner wall of the positioning hole 61, and the movable block 10 will move towards the inside of the groove 71 to compress the buffer spring 11. During manual installation, the instantaneous impact force of the positioning rod 7 when it is inserted into the positioning hole 61 can easily damage the sealing surface of the flange 2 and the head of the positioning rod 7. The buffer spring 11 can absorb the axial impact force when the positioning rod 7 is inserted, avoid direct rigid collision between metal parts, and protect the inner wall of the positioning hole 61. Secondly, the buffer spring 11 will generate a uniform reaction force during compression. The operator can judge the insertion depth of the positioning rod 7 by feel (when the resistance tends to be stable, it means that the movable block 10 has been compressed to the limit and the positioning rod 7 has been inserted in place), without the need for additional visual feedback or measuring tools, thus reducing the operation threshold.

[0039] See Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, in this embodiment, the top of the positioning block 6 is provided with a slot 62, and a crossbar 12 is rotatably installed in the slot 62. An indicator rod 13 is fixedly sleeved on the outside of the crossbar 12. Both ends of the indicator rod 13 are fixedly connected to the inner wall of the slot 62 by a torsion spring 14, and the torsion spring 14 is movably sleeved on the outside of the indicator rod 13.

[0040] Specifically, in the initial state, the indicator rod 13 is limited, the torsion spring 14 is in a torsional energy storage state, and the indicator rod 13 is in a horizontal position, located inside the slot 62. When the end of the positioning rod 7 abuts against the inner wall of the positioning hole 61, the force applied to the indicator rod 13 is released, and the torsion spring 14 returns to its original state, which will drive the indicator rod 13 and the crossbar 12 to rotate 90 degrees counterclockwise. The indicator rod 13 changes from a horizontal state to a vertical state. The operator can judge whether the positioning rod 7 is installed in place based on the state of the indicator rod 13, which is more convenient and clear.

[0041] See Figure 6 and Figures 8-9 As shown, in this embodiment, the positioning block 6 has a vertical groove 63 on the inner wall of the bottom of the slot 62. A ring 15 is fixedly installed in the vertical groove 63. A locking rod 16 is movably inserted through the center of the ring 15. The locking rod 16 and the ring 15 are fixedly connected by a return spring 17. A limiting hole 72 is opened at the top of the positioning rod 7. The bottom of the locking rod 16 is movably engaged with the limiting hole 72. A protrusion 18 is provided at the bottom of the indicator rod 13. The protrusion 18 is movably abutted against the top of the locking rod 16.

[0042] Specifically, the positioning rod 7 moves inward along the positioning hole 61. When the positioning rod 7 abuts against the inner wall of the positioning hole 61, the limiting hole 72 and the vertical groove 63 opened in the positioning block 6 are vertically aligned. The vertical groove 63 is located directly above the limiting hole 72. As mentioned above, when the positioning rod 7 abuts against the inner wall of the positioning hole 61, the indicator rod 13 will rotate 90 degrees counterclockwise. The counterclockwise rotation of the indicator rod 13 will drive the protrusion 18 to rotate. During the rotation of the protrusion 18, it will abut against the top of the lower locking rod 16, thereby pressing the locking rod 16 downward. The locking rod 16 moves into the vertical groove 63 until the bottom is inserted into the limiting hole 72. During this process, the return spring 17 and the ring 1 are compressed. 5 provides support for the return spring 17. At this time, the positioning rod 7 and the positioning block 6 cannot move and remain stable, that is, the flanges 2 at both ends are in a stable state. During this process, the clamping plate 52 also clamps and limits the valve body 4. All three remain stable, which makes it easy to install the screw 3. Similarly, when it is necessary to release the locking between the positioning rod 7 and the positioning block 6, rotate the indicator rod 13 clockwise to make it return to a horizontal state. The protrusion 18 does not abut against the locking rod 16. Under the action of the return spring 17 returning to its original state, it will push the locking rod 16 to move upward along the vertical groove 63. The locking rod 16 is released from the limit hole 72, and the positioning rod 7 can be moved out of the positioning hole 61.

[0043] See Figure 6 and Figure 9 As shown, in this embodiment, the indicator rod 13 has a positioning groove 131 at the end away from the crossbar 12. The positioning block 6 is fixedly installed on the inner wall of the groove 62. The positioning plate 21 is fixedly connected to one side of the fixing plate 19 by the positioning spring 20. The positioning plate 21 is slidably connected to the inner wall of the groove 62. The positioning plate 21 is movably engaged with the positioning groove 131.

[0044] Specifically, in the initial state, the indicator rod 13 is in a horizontal state, the positioning plate 21 is located in the positioning groove 131, the torsion spring 14 is in a torsional energy storage state, and the positioning spring 20 is in a normal extension and contraction state. When the positioning rod 7 is inserted into the positioning hole 61, the positioning plate 21 moves away from the fixing plate 19 and moves towards the outside of the positioning groove 131. During this process, the positioning spring 20 will be stretched. When the positioning rod 7 abuts against the inner wall of the positioning hole 61, the positioning plate 21 moves to the outside of the positioning groove 131. Since the limiting effect of the positioning plate 21 is lost, the torsion spring 14 will drive the indicator rod 13 to rotate 90 degrees counterclockwise to the outside of the groove 62, reminding the operator.

[0045] See Figure 2 , Figure 5 and Figures 8-9As shown, in this embodiment, a horizontal groove 73 is provided at the top of the positioning rod 7, and a movable frame 22 is slidably arranged in the horizontal groove 73. One end of the movable frame 22 is fixedly connected to the top of the movable block 10. A movable groove 64 is provided through one side of the positioning block 6. The movable frame 22 is slidably connected to the movable groove 64. A lifting rod 23 is movably arranged in the movable frame 22, and one side of the lifting rod 23 is movably abutting against the positioning plate 21.

[0046] Specifically, the top of the movable frame 22 is flush with the bottom of the positioning plate 21. When the positioning rod 7 moves toward the inside of the positioning hole 61, the movable frame 22 passes through the movable groove 64 and through the bottom of the positioning plate 21. After the movable frame 22 passes through the bottom of the positioning plate 21, the movable block 10 abuts against the inner wall of the positioning hole 61. The movable block 10 will move in the opposite direction relative to the positioning rod 7. The directional movement of the movable block 10 will drive the movable frame 22 to move in the opposite direction relative to the positioning rod 7 along the transverse groove 73. The movement of the movable frame 22 will drive the lifting rod 23 to move in the opposite direction. When moving in the opposite direction, the lifting rod 23 moves upward relative to the movable frame 22. After the lifting rod 23 moves upward, it will exceed the movable frame. The height is 22, so during the reverse movement, it will abut against the positioning plate 21, thereby pushing the positioning plate 21 to move outward of the positioning groove 131. When the movable block 10 is completely inside the groove 71, the positioning rod 7 abuts against the inner wall of the positioning hole 61, and the positioning plate 21 moves to the outside of the positioning groove 131. At this time, the vertical groove 63 is also aligned with the limiting hole 72. The torsion spring 14 will drive the indicator rod 13 to rotate counterclockwise, and the protrusion 18 will press down on the locking rod 16, so that the bottom of the locking rod 16 is engaged with the limiting hole 72. At this time, the flanges 2 at both ends and the valve body 4 in the middle are initially fixed, which can facilitate the subsequent screw 3 to be tightened to complete the final installation and fixation.

[0047] See Figure 8 and Figure 9 As shown, in this embodiment, an abutment block 24 is fixedly provided on one side of the inner wall of the transverse groove 73. An inclined groove 241 is provided on the abutment block 24. A vertical rod 25 is fixedly provided at the bottom of the lifting rod 23. The end of the vertical rod 25 away from the lifting rod 23 movably passes through the inner wall of the movable frame 22 and its end movably abuts against the abutment block 24 and the inclined groove 241. The bottom of the lifting rod 23 is elastically connected to the inner wall of the movable frame 22.

[0048] Specifically, during the reverse movement of the movable frame 22, it will move along the horizontal groove 73, which will drive the vertical rod 25 to move in the reverse direction as well. During the movement of the vertical rod 25, it will move upward along the inclined groove 241 opened by the abutment block 24. The upward movement of the vertical rod 25 will drive the lifting rod 23 to move upward. During the reverse movement, the lifting rod 23 abuts against the positioning plate 21, which can realize the positioning plate 21 moving towards the outside of the positioning groove 131, and finally realize the rotation of the indicator rod 13.

[0049] In this embodiment, a wafer-type butterfly valve includes the aforementioned adjustable mounting structure.

[0050] Specifically, a wafer-type butterfly valve, including the aforementioned adjustable mounting structure, can initially limit the flange 2 and valve body 4 before the mounting screw 3 is installed, ensuring stability during the installation process.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An adjustable installation structure, comprising pipes on both sides and flanges that are movably engaged with the pipes, characterized in that, Also includes: The valve body is movably disposed between the two flanges, and its two sides are respectively movably abutting against the pipes on both sides, and multiple mounting holes are provided on it; Multiple mounting holes are provided on the flange and are flush with the mounting holes. A screw that moves through the mounting hole and the locking hole; A limiting component is provided on one side of one of the flanges for clamping and limiting the valve body.

2. The adjustable mounting structure according to claim 1, characterized in that, The limiting component includes a fixing rod, which is installed on the flange on the side facing the valve body. Two clamping plates are movably sleeved on the outside of the fixing rod, with a certain gap between the two clamping plates and located on both sides of the valve body. The clamping plates movably abut against the side wall of the valve body.

3. The adjustable mounting structure according to claim 2, characterized in that, The flange is rotatably mounted on one side of the fixed rod. The rotating rod has threads symmetrically arranged on both sides, and the threads in the two places have opposite directions. The two clamping plates are respectively adapted to and connected to the two threads.

4. The adjustable mounting structure according to claim 3, characterized in that, Positioning blocks are axially symmetrically fixed on both sides of the flange, located below the rotating rod. Positioning holes are opened in the positioning blocks. A positioning rod is axially symmetrically fixed on the other flange towards the valve body. The positioning rod is movably inserted into the positioning hole.

5. An adjustable mounting structure according to claim 4, characterized in that, A cylinder is fixedly sleeved on the outer side of the middle part of the rotating rod. The outer side of the cylinder has straight grooves on both sides and a curved groove in the middle, which are interconnected. A limit rod is fixedly installed on the top of the positioning rod. The end of the limit rod away from the positioning rod is slidably connected to the straight groove and the curved groove.

6. The adjustable mounting structure according to claim 4, characterized in that, The positioning rod has a groove at the end away from the flange, and a movable block is movably installed in the groove. One side of the movable block is fixedly connected to the inner wall of the groove by a buffer spring, and the end of the movable block away from the buffer spring is movably abutting against the inner wall of the positioning hole.

7. An adjustable mounting structure according to claim 6, characterized in that, The top of the positioning block has a slot, and a crossbar is rotatably installed in the slot. An indicator rod is fixedly sleeved on the outside of the crossbar. Both ends of the indicator rod are fixedly connected to the inner wall of the slot by torsion springs, and the torsion springs are movably sleeved on the outside of the indicator rod.

8. An adjustable mounting structure according to claim 7, characterized in that, The positioning block has a vertical groove on the inner wall at the bottom of the slot. A ring is fixedly installed in the vertical groove. A locking rod is movably installed through the center of the ring. The locking rod and the ring are fixedly connected by a return spring. A limit hole is opened at the top of the positioning rod. The bottom of the locking rod is movably engaged with the limit hole. A protrusion is provided at the bottom of the indicator rod. The protrusion movably abuts against the top of the locking rod.

9. An adjustable mounting structure according to claim 8, characterized in that, The indicator rod has a positioning groove at one end away from the crossbar. A fixing plate is fixedly installed on the inner wall of the positioning block on one side of the groove. The fixing plate is fixedly connected to the positioning plate by a positioning spring on one side. The positioning plate is slidably connected to the inner wall of the groove on one side. The positioning plate is movably engaged with the positioning groove.

10. An adjustable mounting structure according to claim 9, characterized in that, The top of the positioning rod has a horizontal groove, and a movable frame is slidably arranged in the horizontal groove. One end of the movable frame is fixedly connected to the top of the movable block. A movable groove is opened through one side of the positioning block, and the movable frame is slidably connected to the movable groove. A lifting rod is movably arranged in the movable frame, and one side of the lifting rod is movably abutting against the positioning plate.

11. An adjustable mounting structure according to claim 10, characterized in that, A stop block is fixedly installed on one side of the inner wall of the transverse groove. An inclined groove is opened on the stop block. A vertical rod is fixedly installed at the bottom of the lifting rod. The end of the vertical rod away from the lifting rod passes through the inner wall of the movable frame and its end is in movable contact with the stop block and the inclined groove. The bottom of the lifting rod is elastically connected to the inner wall of the movable frame.

12. A wafer-type butterfly valve, characterized in that, Includes the adjustable mounting structure as described in any one of claims 1-11.

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