Three-eccentric full-metal hard sealing butterfly valve and adjusting method

Abstract

The present application relates to the technical field of three eccentric butterfly valves, and particularly relates to a three eccentric full-metal hard sealing butterfly valve and a regulating method, which comprises a valve body, pipe bodies are arranged on both sides of the valve body, flange rings one are fixedly connected to both end sides of the valve body, flange rings two are arranged on the pipe body sides corresponding to the flange rings one, a plurality of positioning screws are arranged on the flange ring one side in a ring type and at equal distances, and the positioning screws are screw-connected with nuts at one end, which are in contact with the flange ring two side. In the present application, the slide-inserting plates are slidably connected with the sealing plates, the flange ring two on which a group of two sealing plates are enclosed on the pipe body is enclosed by the adjacent two slide-inserting plates on the flange ring one on the valve body, and after the positioning screws are removed, the valve body and the slide-inserting plates can be moved upwards along the sealing plates, the pipe body end is blocked by the slide-inserting plate bottom, the liquid in the pipe body is prevented from flowing out in a large amount, the valve body is quickly replaced, and the operation of the staff is facilitated.

Description

Technical Field

[0001] This invention relates to the field of triple eccentric butterfly valve technology, specifically to a triple eccentric all-metal hard-seal butterfly valve and its regulating method. Background Technology

[0002] The triple-eccentric all-metal hard-seal butterfly valve is a type of hard-seal butterfly valve. The valve stem axis is offset from both the center of the disc and the center of the body, and the rotation axis of the valve seat is at a certain angle to the axis of the valve body channel. The triple-eccentric metal hard-seal butterfly valve has high-temperature and corrosion-resistant alloy materials welded onto the surface layer of the valve seat sealing ring, and multiple soft stacked sealing rings are fixed on the butterfly plate. This gives the triple-eccentric butterfly valve good high-temperature and high-pressure resistance and corrosion resistance, and there is no friction between the butterfly plate and the valve body when the butterfly plate is in motion.

[0003] Existing triple-eccentric all-metal hard-seal butterfly valves are typically installed by connecting the valve body to the pipeline via flanges. While this provides good installation, it doesn't always completely drain the liquid inside the pipeline when the valve body needs to be replaced and the entire pipeline system is shut down. Some liquid may remain inside the pipeline. Furthermore, due to the characteristics of butterfly valves, they are mostly used in large-diameter pipeline systems in chemical industries. Therefore, when the butterfly valve is removed, a large amount of residual liquid may flow out from the pipeline, making valve body replacement inconvenient. Summary of the Invention

[0004] To overcome the aforementioned technical problems, the present invention aims to provide a triple-eccentric all-metal hard-seal butterfly valve and its adjustment method. A sliding plate is slidably connected to a sealing baffle. Two sealing baffles are positioned above and below a flange ring two on the pipe body, and two adjacent sliding plates are positioned above and below a flange ring one on the valve body. After removing the positioning screws, the valve body and the sliding plate can move upwards along the sealing baffles. The bottom of the sliding plate blocks the end of the pipe body, preventing a large outflow of the transported liquid inside the pipe body. This facilitates quick valve body replacement and makes operation easier for staff.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A triple-eccentric all-metal hard-seal butterfly valve includes a valve body with pipes on both sides. A flange ring 1 is fixedly connected to the side of each end of the valve body. A flange ring 2 is provided on the side of each pipe corresponding to flange ring 1. Several positioning screws passing through flange ring 2 are equidistantly arranged in a ring shape on the side of flange ring 1. One end of each positioning screw is screwed into a nut that contacts the side of flange ring 2. A sealing module is provided on the side of the valve body. The sealing module includes four sealing plates, with the sides of two adjacent sealing plates enclosing the side of flange ring 2 on the same side. Two limiting rods are fixedly connected to the side of each sealing plate on one side of the valve body. A sliding plate that contacts the side of an adjacent flange ring 1 is slidably connected to the side of each sealing plate on one side of the valve body, and both sides of the sliding plate are slidably connected to the inner sides of adjacent limiting rods. Connecting screws are screwed into both sides of the top surface of the top sealing plate and both sides of the top surface of the sliding plate. The top surfaces of the bottom sealing plate and the sliding plate are screwed into two adjacent connecting screws.

[0007] The valve body and pipe body can be connected together using positioning screws and nuts. Liquid can be transported through the pipe body, and the flow of liquid can be controlled by the valve body. When the valve body needs to be replaced, two sealing plates are placed on flange ring two on the pipe body, and two adjacent sliding plates are placed on flange ring one on the valve body. The two adjacent sealing plates and the two adjacent sliding plates are connected by connecting screws. After unscrewing the nuts to disengage the positioning screws from flange ring two, the sliding plates can be moved upwards along the sealing plates. The sliding plates move the valve body upwards between the two pipe bodies. The bottom of the sliding plates will block the end of the pipe body, preventing residue from remaining inside the pipe body. The large outflow of liquid makes it necessary to spend a long time dealing with the situation at the site. At the same time, it avoids the possibility of some special liquids causing harm to the staff, which is conducive to the rapid replacement of the valve body and facilitates the operation of the staff. Then, the connecting screw can be unscrewed from the slide plate, the two adjacent slide plates can be separated, and the valve body can be taken out from the sealing module. Then, the new valve body can be placed on the slide plate, and the two slide plates can be used to surround the new valve body, so that the new valve body moves down between the two pipes. Then, the new valve body can be installed between the two pipes using the positioning screws and nuts. The sealing module can be laid flat on the valve body and the pipe as needed.

[0008] Furthermore, the two sealing plates at the top are fixedly connected to drain pipes on their opposite sides. The sides of the sealing plates are provided with circular grooves corresponding to the drain pipes. After the valve body is moved upward and separated from the pipes, the residual liquid inside the valve body can be discharged through the drain pipes to avoid contaminating the replacement site.

[0009] Furthermore, four connecting mechanisms are provided between the two sealing plates at the same height. Each connecting mechanism includes two fixed seats, the side of which is fixedly connected to the side of the adjacent sealing plate. A support cylinder is rotatably connected to the side of one fixed seat, and a support rod is screwed onto the inner side of the support cylinder and fixedly connected to the side of the other fixed seat. The sealing plates on both sides can be connected to each other through the connecting mechanisms, and the sliding plate is stably pressed against the pipe body by the support rod and the support cylinder. When the support cylinder is rotated, the support rod can be extended or retracted into the support cylinder, thereby adapting to valve bodies of different sizes as needed and reducing the volume of the sealing module for easy storage and carrying.

[0010] Furthermore, the sealing module has a pushing module at its bottom, which includes a connecting rod. An adjusting screw is rotatably connected to the side of the connecting rod, and a U-shaped seat is screwed onto the top of the connecting rod. A connecting screw is screwed onto the top of the U-shaped seat and screwed onto the adjacent sliding plate. Two round rods are fixedly connected to the top surface of the connecting rod, and positioning plates are fixedly connected to the top of the two round rods and rotatably connected to the top of the adjusting screw. The U-shaped seat can be fixed to the bottom sliding plate by the connecting screw. The adjusting screw can be rotated, which causes the U-shaped seat to push the sliding plate upward, thereby causing the sliding plate to move the valve body upward and move the valve body out between the two pipes.

[0011] Furthermore, L-shaped rods are slidably connected to both sides of the connecting rod, and a mounting bracket is fixedly connected to the side of the sealing plate away from the sliding plate. The top of the L-shaped rod contacts the inner side of the mounting bracket, and the L-shaped rod can be hooked onto the corresponding mounting bracket. In this way, when the adjusting screw rotates, the connecting rod can be prevented from moving away from the sealing plate, thereby allowing the U-shaped seat to smoothly push the sliding plate to move relative to the sealing plate.

[0012] Furthermore, both ends of the inner side of the valve body are slidably connected to sealing rings that slidably insert into the inner side of the adjacent pipe body. Four U-shaped brackets are fixedly connected to the opposite faces of the two sealing rings. Four adjusting boxes are fixedly connected to the corresponding U-shaped brackets on both sides of the valve body. A rotating shaft is rotatably connected to the inner side of the adjusting box and rotatably connected to the inner side of the valve body. One end of the rotating shaft extends into the interior of the adjacent U-shaped bracket, and an abutment block is fixedly connected to the other end of the rotating shaft, which contacts the side of the adjacent sealing ring. The position of the sealing ring can be restricted by the abutment block, thereby making the sealing ring stably inserted into the pipe body. This is beneficial to improving the stability of the installation of the valve body and the pipe body, facilitating the alignment of flange ring one and flange ring two during installation, and the sealing ring can block the gap between the valve body and the pipe body, which is beneficial to improving the sealing effect.

[0013] Furthermore, the inner side of the adjusting box is rotatably connected to a connecting shaft. A bevel gear is fixedly sleeved on the side of the connecting shaft and at one end of the rotating shaft within the adjusting box, with adjacent bevel gears meshing for transmission. An adjusting gear is fixedly sleeved on the side of the connecting shaft. Sliding rings are slidably connected to both sides of the valve body. Four racks are fixedly connected to each of the two sliding rings facing each other within the adjusting box. The racks are slidably connected to the inner side of adjacent adjusting boxes, and mesh with adjacent adjusting gears for transmission. When the nut is unscrewed, the sliding rings can move away from the flange ring, causing the positioning screw to move and disengage from the flange ring. The sliding rings can also move the racks, which in turn can rotate the adjusting gears, causing the connecting shaft to rotate. The connecting shaft can then drive the rotating shaft to rotate via the bevel gears, causing the abutment block to rotate. This causes the arc surface at the end of the abutment block to disengage from the sealing ring. The abutment block then pushes the U-shaped frame through its end, disengaging the sealing ring from the pipe body. Finally, the valve body can be removed from the pipe body.

[0014] Furthermore, the positioning screw is fixedly connected to a fixed shaft at the end away from the nut, and one end of the fixed shaft is rotatably connected to the side of the sliding ring. A connecting gear is fixedly sleeved on the side of the fixed shaft, and a toothed ring that meshes with several connecting gears is rotatably connected to the side of the sliding ring. When the sliding ring moves, it can drive the positioning screw to move through the fixed shaft, thereby disengaging the positioning screw from the flange ring and preventing the positioning screw from blocking the separation of the valve body and the pipe body. When the toothed ring rotates, it can move several connecting gears, thereby rotating the positioning screw and facilitating the removal of the nut.

[0015] Furthermore, the positioning screw has a slidingly connected engagement cylinder that screws into the inner side of flange ring one. Several spheres are embedded on one end of the engagement cylinder, contacting the second side of flange ring two. Two actuating blocks are fixedly connected to the inner side of the engagement cylinder. The positioning screw has two grooves that slide into the adjacent actuating blocks. When the nut is unscrewed from the positioning screw, if the nut causes the positioning screw to rotate, the rotation of the positioning screw will drive the engagement cylinder to rotate via the actuating blocks. This allows the engagement cylinder to move along the inside of flange ring one. After the spheres on one side of the engagement cylinder abut against flange ring two, flange ring two can restrict the movement of the engagement cylinder, thereby restricting its rotation and providing resistance to the rotation of the positioning screw, allowing the nut to move smoothly. Unscrew the positioning screw and rotate the gear ring. The gear ring can rotate the connecting gear, which in turn drives the positioning screw to rotate via the fixed shaft. The positioning screw, through the groove and the actuating block, drives the engagement cylinder to rotate, causing the ball on the engagement cylinder to support the flange ring and create a certain gap between the valve body and the pipe body. This facilitates the valve body moving out between the two pipe bodies and allows for quick valve body replacement. When installing a new valve body and tightening the nut onto the positioning screw, if the nut causes the positioning screw to move in the opposite direction, the engagement cylinder will rotate in the opposite direction, bringing the other end of the engagement cylinder into contact with the large end of the positioning screw. At this point, the large end of the positioning screw can prevent the engagement cylinder from moving, thus preventing its rotation and providing resistance to the rotation of the positioning screw, allowing the nut to be smoothly tightened onto the positioning screw.

[0016] A method for adjusting a triple-eccentric all-metal hard-seal butterfly valve, the specific operating steps of which are as follows:

[0017] Step 1: When the valve body needs to be replaced, surround the sealing baffle on flange ring 2, and surround the two adjacent sliding plates on flange ring 1. Connect the two adjacent sealing baffles and the two adjacent sliding plates through the connecting screw.

[0018] Step 2: Unscrew the nut to move the sliding ring away from flange ring 1, disengaging the positioning screw from flange ring 2. At the same time, the sliding ring will drive the rack to move, causing the rotating shaft to drive the abutment block to rotate. The abutment block will disengage the sealing ring from the pipe body. Rotate the gear ring to turn the connecting gear, causing the positioning screw to drive the engagement cylinder to rotate through the actuating block, thus supporting the ball on the engagement cylinder on flange ring 2.

[0019] Step 3: Hook the L-shaped rod onto the corresponding mounting bracket, and fix the U-shaped seat to the two bottom sliding plates with the connecting screws. Turn the adjusting screw to push the sliding plates and valve body upwards with the U-shaped seat, and move the valve body out from between the two pipes. Drain the liquid in the valve body through the round groove and the drain pipe. Unscrew the connecting screw from the sliding plates to separate the two adjacent sliding plates, and then take out the valve body.

[0020] Step 4: Place the new valve body on the slide plate and surround the new valve body with the slide plate, so that the adjusting screw rotates in the opposite direction and moves the new valve body between the two pipe bodies;

[0021] Step 5: Move the sliding ring on the new valve body toward flange ring one, rotate the abutment block in the opposite direction, insert the sealing ring into the adjacent pipe body, and insert the positioning screw into the adjacent flange ring two. Then screw the nut onto the positioning screw to connect the valve body and the pipe body. Finally, unscrew the connecting screw to separate the two adjacent sealing plates and the two adjacent sliding plates, thereby removing the sealing module.

[0022] The beneficial effects of this invention are:

[0023] 1. The valve body is slidably connected to the sealing plate by a sliding slide plate. When the valve body needs to be replaced, two sealing plates are placed on the flange ring two on the pipe body, and two adjacent sliding slide plates are placed on the flange ring one on the valve body. After unscrewing the nut and removing the positioning screw, the valve body and the sliding slide plate can be moved upward along the sealing plate. The bottom of the sliding slide plate blocks the end of the pipe body, preventing a large amount of liquid from flowing out of the pipe body, which would require a long time to deal with the replacement site. At the same time, it avoids some special liquids from causing harm to the workers, which is conducive to the rapid replacement of the valve body and facilitates the operation of the workers. After the valve body is moved upward, the liquid inside the valve body can be discharged through the drain pipe to avoid contaminating the replacement site.

[0024] 2. A sealing ring is slidably connected to the inner side of the valve body. The position of the sealing ring can be restricted by the abutment block, so that the sealing ring can be inserted into the pipe body and block the gap between the valve body and the pipe body. This helps to improve the stability of the valve body and the pipe body installation, facilitates the alignment of flange ring 1 on the valve body and flange ring 2 on the pipe body during installation, and also helps to improve the sealing effect.

[0025] 3. Two actuating blocks are fixedly connected to the inner side of the rotating cylinder. After unscrewing the nut, the sliding ring and toothed ring can be moved away from the flange ring. At this time, the adjusting gear can be rotated by the rack, which will cause the sealing ring to move away from the pipe body and disengage from the pipe body through the abutment block. At the same time, the sliding ring can drive the positioning screw to move. After the positioning screw is disengaged from the flange ring, several connecting gears can be rotated by the toothed ring, which will cause the positioning screw to drive the rotating cylinder to rotate through the actuating blocks. The ball on the rotating cylinder will then abut against the flange ring, thus slightly opening the two pipe bodies and creating a certain gap between the valve body and the pipe body. This makes it easier for the valve body to move out of the gap between the two pipe bodies and facilitates quick valve body replacement. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1This is a schematic diagram of the overall structure of a triple-eccentric all-metal hard-seal butterfly valve and its regulating method according to the present invention;

[0028] Figure 2 This is a schematic diagram of the sealing module structure in this invention;

[0029] Figure 3 This is a schematic diagram of the sealing baffle structure in this invention;

[0030] Figure 4 This is a schematic diagram of the internal side view of the sealing plate in this invention;

[0031] Figure 5 This is a schematic diagram of the pushing module structure in this invention;

[0032] Figure 6 This is a schematic diagram of the valve body structure in this invention;

[0033] Figure 7 This is a schematic diagram of the internal front view structure of the sealing ring in this invention;

[0034] Figure 8 This is a schematic diagram of the U-shaped frame structure in this invention;

[0035] Figure 9 This is a schematic diagram of the internal side view of the adjustment box in this invention;

[0036] Figure 10 This is a front view schematic diagram of the internal structure of the adjustment box in this invention;

[0037] Figure 11 This is a schematic diagram of the internal front view structure of the flange ring in this invention;

[0038] Figure 12 This is a schematic diagram of the positioning screw structure in this invention.

[0039] In the diagram: 100, sealing module; 110, sealing plate; 111, drain pipe; 112, mounting bracket; 120, sliding plate; 130, limit rod; 140, connecting screw; 150, connecting mechanism; 151, fixed seat; 152, support cylinder; 153, support rod; 200, pushing module; 210, connecting rod; 211, adjusting screw; 220, L-shaped rod; 230, round rod; 240, U-shaped seat; 250, positioning plate; 300, valve body; 3 10. Flange ring one; 311. Screw-in cylinder; 312. Actuating block; 320. Sealing ring; 321. U-shaped frame; 330. Adjusting box; 331. Rotating shaft; 332. Abutment block; 333. Connecting shaft; 334. Adjusting gear; 335. Bevel gear; 340. Sliding ring; 341. Gear ring; 342. Rack; 350. Positioning screw; 351. Fixed shaft; 352. Connecting gear; 360. Nut; 400. Pipe body; 410. Flange ring two. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figure 1-12 As shown, a triple-eccentric all-metal hard-seal butterfly valve includes a valve body 300, with pipe bodies 400 on both sides of the valve body 300. Flange rings 310 are fixedly connected to the sides of both ends of the valve body 300. Flange rings 410 are provided on the sides of the pipe bodies 400 corresponding to flange rings 310. Several positioning screws 350 are equidistantly arranged in a ring shape on the side of flange rings 310, passing through flange rings 410. One end of each positioning screw 350 is screwed with a nut 360 that contacts the side of flange ring 410. A sealing module 100 is provided on the side of the valve body 300, and the sealing module 100 includes four sealing plates 110, with adjacent sealing plates 110... The side of the flange ring 410 on the same side is surrounded by the sealing plate 110. Two limit rods 130 are fixedly connected to the side of the sealing plate 110 on the side of the valve body 300. The side of the sealing plate 110 on the side of the valve body 300 is slidably connected to the sliding plate 120 that contacts the side of the adjacent flange ring 310. Both sides of the sliding plate 120 are slidably connected to the inner side of the adjacent limit rod 130. The top surfaces of the sealing plate 110 at the top and the top surfaces of the sliding plate 120 are screwed together with the connecting screws 140. The top surfaces of the sealing plate 110 at the bottom and the sliding plate 120 are screwed together with the two adjacent connecting screws 140.

[0042] The valve body 300 and the pipe body 400 can be connected to each other by the positioning screw 350 and nut 360. Liquid can be transported through the pipe body 400 and the flow of liquid can be controlled by the valve body 300. When the valve body 300 needs to be replaced, two sealing plates 110 are placed around the flange ring 410 on the pipe body 400, and two adjacent sliding plates 120 are placed around the flange ring 310 on the valve body 300. The two adjacent sealing plates 110 and the two adjacent sliding plates 120 are connected by the connecting screw 140. After unscrewing the nut 360 to disengage the positioning screw 350 from the flange ring 410, the sliding plate 120 can be moved upward along the sealing plate 110. The valve body 300 is moved upward between the two pipe bodies 400 by the sliding plate 120, and the bottom of the sliding plate 120 will block the end of the pipe body 400. To prevent a large amount of residual liquid from flowing out of the pipe body 400, which would require a long time to handle and replace the situation, and to avoid harm to workers from certain special liquids, the valve body 300 can be quickly replaced, making it easier for workers to operate. Then, the connecting screw 140 can be unscrewed from the sliding plate 120, separating the two adjacent sliding plates 120, so that the valve body 300 can be removed from the sealing module 100. Then, the new valve body 300 can be placed on the sliding plate 120, and the two sliding plates 120 can surround the new valve body 300, so that the new valve body 300 moves down between the two pipe bodies 400. Then, the new valve body 300 can be installed between the two pipe bodies 400 using the positioning screw 350 and nut 360. The sealing module 100 can be laid flat on the valve body 300 and the pipe body 400 as needed.

[0043] The two top baffles 110 are fixedly connected to the back of the drain pipes 111. The sides of the baffles 110 are provided with circular grooves corresponding to the drain pipes 111. After the valve body 300 is moved upward and separated from the pipe body 400, the residual liquid inside the valve body 300 can be discharged through the drain pipes 111 to avoid contaminating the replacement site.

[0044] Four connecting mechanisms 150 are provided between the two sealing plates 110 at the same height. Each connecting mechanism 150 includes two fixed seats 151. The side of the fixed seat 151 is fixedly connected to the side of the adjacent sealing plate 110. A support cylinder 152 is rotatably connected to the side of one fixed seat 151. A support rod 153, which is fixedly connected to the side of the other fixed seat 151, is screwed onto the inner side of the support cylinder 152. The sealing plates 110 on both sides can be connected to each other through the connecting mechanism 150. The sliding plate 120 is stably pressed against the pipe body 400 by the support rod 153 and the support cylinder 152. When the support cylinder 152 is rotated, the support rod 153 can be extended or retracted into the support cylinder 152, thereby adapting to valve bodies 300 of different sizes as needed and reducing the volume of the sealing module 100 for easy storage and carrying.

[0045] The sealing module 100 has a push module 200 at its bottom. The push module 200 includes a connecting rod 210. An adjusting screw 211 is rotatably connected to the side of the connecting rod 210. A U-shaped seat 240 is screwed onto the top of the connecting rod 210 and is screwed onto the top of the U-shaped seat 240 and is screwed onto the top of the U-shaped seat 240 and is screwed onto the top of the adjacent sliding plate 120. Two round rods 230 are fixedly connected to the top surface of the connecting rod 210. A positioning plate 250 is fixedly connected to the top of the two round rods 230 and is rotatably connected to the top of the adjusting screw 211. The U-shaped seat 240 can be fixed to the sliding plate 120 at the bottom by the connecting screw. The adjusting screw 211 can be rotated. The rotation of the adjusting screw 211 can push the U-shaped seat 240 upward to move the sliding plate 120, thereby causing the sliding plate 120 to move the valve body 300 upward and move the valve body 300 out between the two pipe bodies 400.

[0046] Both sides of the connecting rod 210 are slidably connected to L-shaped rods 220. The side of the sealing plate 110 away from the sliding plate 120 is fixedly connected to the mounting bracket 112, and the top of the L-shaped rod 220 contacts the inner side of the mounting bracket 112. The L-shaped rod 220 can be hooked on the corresponding mounting bracket 112. In this way, when the adjusting screw 211 rotates, it can prevent the connecting rod 210 from moving away from the sealing plate 110, so that the U-shaped seat 240 can smoothly push the sliding plate 120 to move relative to the sealing plate 110.

[0047] Both ends of the inner side of the valve body 300 are slidably connected to sealing rings 320 that slidably insert into the inner side of the adjacent pipe body 400. Four U-shaped brackets 321 are fixedly connected to the opposite faces of the two sealing rings 320. Four adjusting boxes 330 are fixedly connected to the corresponding U-shaped brackets 321 on both sides of the valve body 300. A rotating shaft 331 is rotatably connected to the inner side of the adjusting box 330 and rotatably connected to the inner side of the valve body 300. One end of the rotating shaft 331 extends into the interior of the adjacent U-shaped bracket 321. One end of shaft 331 is fixedly connected to an abutment block 332 that contacts the side of the adjacent sealing ring 320. The position of the sealing ring 320 can be restricted by the abutment block 332, so that the sealing ring 320 can be stably inserted into the pipe body 400. This helps to improve the stability of the installation of valve body 300 and pipe body 400, facilitates the alignment of flange ring 1 310 and flange ring 2 410 during installation, and the sealing ring 320 can block the gap between valve body 300 and pipe body 400, which helps to improve the sealing effect.

[0048] A connecting shaft 333 is rotatably connected to the inner side of the regulating box 330. A bevel gear 335 is fixedly sleeved on the side of the connecting shaft 333 and at one end of the rotating shaft 331 located inside the regulating box 330. Two adjacent bevel gears 335 mesh and drive each other. An adjusting gear 334 is fixedly sleeved on the side of the connecting shaft 333. Sliding rings 340 are slidably connected to both sides of the valve body 300. Four racks 342 are fixedly connected to each opposing regulating box 330. The sides of the racks 342 are slidably connected to the inner side of the adjacent regulating box 330, and the racks 342 mesh and drive with the adjacent adjusting gears 334. Unscrewing the nut 360 allows the sliding rings 340 to move away from the flange. When ring 310 moves, sliding ring 340 can drive positioning screw 350 to move, causing positioning screw 350 to disengage from flange ring 410. Sliding ring 340 can also drive rack 342 to move, rack 342 can rotate adjusting gear 334, thereby causing connecting shaft 333 to rotate. Connecting shaft 333 can drive rotating shaft 331 to rotate via bevel gear 335. Rotating shaft 331 can drive abutment block 332 to rotate, thereby causing the arc surface at the end of abutment block 332 to disengage from sealing ring 320. Then abutment block 332 will push U-shaped frame 321 to move through its end, causing sealing ring 320 to disengage from pipe body 400. Then valve body 300 can be removed from pipe body 400.

[0049] The end of the positioning screw 350 away from the nut 360 is fixedly connected to a fixed shaft 351, and one end of the fixed shaft 351 is rotatably connected to the side of the sliding ring 340. A connecting gear 352 is fixedly sleeved on the side of the fixed shaft 351, and a toothed ring 341 that meshes with several connecting gears 352 is rotatably connected to the side of the sliding ring 340. When the sliding ring 340 moves, it can drive the positioning screw 350 to move through the fixed shaft 351, thereby disengaging the positioning screw 350 from the flange ring 410 and preventing the positioning screw 350 from obstructing movement. When the valve body 300 is separated from the pipe body 400, the rotation of the gear ring 341 can drive several connecting gears 352 to rotate, thereby causing the positioning screw 350 to rotate, making it easier to remove the nut 360. A rough surface can be provided on the side of the gear ring 341, and a connecting plate with a rough inner arc surface can be provided. When the rough surface of the connecting plate is pressed against the gear ring 341, the rotation of the gear ring 341 can be restricted by the connecting plate, thereby restricting the rotation of the positioning screw 350, making it easier to unscrew the nut 360 from the positioning screw 350.

[0050] The positioning screw 350 has a sliding connection to a screw-engaging cylinder 311 that screws into the inner side of flange ring 1 310. One end of the screw-engaging cylinder 311 has several balls embedded in its side that contact the side of flange ring 2 410. Two actuating blocks 312 are fixedly connected to the inner side of the screw-engaging cylinder 311. The positioning screw 350 has two grooves on its side that slide into the adjacent actuating blocks 312. When the nut 360 is unscrewed from the positioning screw 350, if the nut 360 causes the positioning screw 350 to rotate... When the positioning screw 350 rotates, it drives the engagement cylinder 311 to rotate via the actuating block 312. This allows the engagement cylinder 311 to move along the inside of the flange ring 310. After the ball on one side of the engagement cylinder 311 abuts against the flange ring 410, the flange ring 410 restricts the movement of the engagement cylinder 311, thereby limiting its rotation. This provides a certain resistance to the rotation of the positioning screw 350, allowing the nut 360 to smoothly unscrew the positioning screw 350 and rotate the toothed ring. 341, the gear ring 341 can actuate the connecting gear 352 to rotate. The connecting gear 352 can drive the positioning screw 350 to rotate via the fixed shaft 351. The positioning screw 350 can drive the rotating cylinder 311 to rotate via the groove and the actuating block 312. This causes the ball on the rotating cylinder 311 to support the flange ring 410, creating a certain gap between the valve body 300 and the pipe body 400. This facilitates the movement of the valve body 300 between the two pipe bodies 400, enabling quick replacement of the valve body 300. When installing the new valve body 300 and tightening the nut 360 onto the positioning screw 350, if the nut 360 causes the positioning screw 350 to move in the opposite direction, the engagement cylinder 311 can rotate in the opposite direction, so that the other end of the engagement cylinder 311 contacts the large end of the positioning screw 350. At this time, the large end of the positioning screw 350 can prevent the engagement cylinder 311 from moving, thereby preventing the engagement cylinder 311 from rotating, providing a certain resistance to the rotation of the positioning screw 350, so that the nut 360 can be smoothly tightened onto the positioning screw 350.

[0051] A method for adjusting a triple-eccentric all-metal hard-seal butterfly valve, the specific operating steps of which are as follows:

[0052] Step 1: When the valve body 300 needs to be replaced, surround the sealing baffle 110 on the flange ring 2 410, and surround the two adjacent sliding plates 120 on the flange ring 1 310. Connect the two adjacent sealing baffles 110 and the two adjacent sliding plates 120 through the connecting screw 140.

[0053] Step 2: Unscrew nut 360 to move sliding ring 340 away from flange ring 1 310, disengage positioning screw 350 from flange ring 2 410, and at the same time, sliding ring 340 will drive rack 342 to move, causing rotating shaft 331 to drive abutment block 332 to rotate, and sealing ring 320 to disengage from pipe body 400 through abutment block 332. Rotate rack ring 341 to drive connecting gear 352 to rotate, so that positioning screw 350 drives engagement cylinder 311 to rotate through actuating block 312, and the spherical top on engagement cylinder 311 supports flange ring 2 410.

[0054] Step 3: Hook the L-shaped rod 220 onto the corresponding mounting bracket 112, and fix the U-shaped seat 240 to the two bottom sliding plates 120 with the connecting screws. Rotate the adjusting screw 211 to push the U-shaped seat 240 upward to push the sliding plates 120 and the valve body 300, and move the valve body 300 out from between the two pipes 400. Drain the liquid in the valve body 300 through the round groove and the drain pipe 111. Unscrew the connecting screw 140 from the sliding plates 120 to separate the two adjacent sliding plates 120, and then take out the valve body 300.

[0055] Step 4: Place the new valve body 300 on the slide plate 120 and surround the new valve body 300 through the slide plate 120, so that the adjusting screw 211 rotates in the opposite direction and moves the new valve body 300 between the two pipe bodies 400.

[0056] Step 5: Move the sliding ring 340 on the new valve body 300 toward the flange ring 310, causing the abutment block 332 to rotate in the opposite direction, insert the sealing ring 320 into the adjacent pipe body 400, and insert the positioning screw 350 into the adjacent flange ring 410. Then screw the nut 360 onto the positioning screw 350 to connect the valve body 300 and the pipe body 400. Finally, unscrew the connecting screw 140 to separate the two adjacent sealing plates 110 and the two adjacent sliding plates 120, thereby removing the sealing module 100.

[0057] Working principle: In use, the valve body 300 and the pipe body 400 can be connected to each other by the positioning screw 350 and nut 360. The position of the sealing ring 320 is restricted by the abutment block 332, so that the sealing ring 320 is stably inserted into the pipe body 400, thereby stably sealing the valve body 300 and the pipe body 400. At this time, liquid can be transported through the pipe body 400 and the flow of liquid can be controlled by the valve body 300.

[0058] When valve body 300 needs to be replaced, two sets of sealing plates 110 are arranged around flange ring 410 of one pipe body 400, and two sets of sealing plates 110 are arranged around flange ring 410 of another pipe body 400, so that two adjacent sliding plates 120 are arranged around flange ring 310. Then, multiple connecting screws 140 can be screwed onto the two adjacent sealing plates 110 and the two adjacent sliding plates 120 respectively, thereby stably connecting the two adjacent sealing plates 110 and the two adjacent sliding plates 120. The nuts can then be loosened. 360. When the nut 360 is rotated, if the nut 360 causes the positioning screw 350 to rotate, the rotation of the positioning screw 350 will drive the engagement cylinder 311 to rotate through the actuating block 312, thereby causing the engagement cylinder 311 to move along the inside of the flange ring 1 310. After the ball on one side of the engagement cylinder 311 abuts against the flange ring 2 410, the movement of the engagement cylinder 311 can be restricted by the flange ring 2 410, thereby restricting the rotation of the engagement cylinder 311 and providing a certain resistance to the rotation of the positioning screw 350, so that the nut 360 can be unscrewed smoothly.

[0059] After unscrewing the nut 360, the sliding ring 340 can move away from the flange ring 310. The sliding ring 340 can drive the positioning screw 350 to move, disengaging the positioning screw 350 from the flange ring 410. Simultaneously, the sliding ring 340 can drive the rack 342 to move, which in turn can rotate the adjusting gear 334. The adjusting gear 334 can then drive the connecting shaft 333 to rotate. The connecting shaft 333 can then drive the rotating shaft 331 to rotate via the bevel gear 335. The rotating shaft 331 can then drive the abutment block 332 to rotate. The abutment block 332 gradually separates from the sealing ring 320. Then, the abutment block 332 pushes the U-shaped frame 321 to move, causing the sealing ring 320 to separate from the pipe body 400. The toothed ring 341 can rotate, and the toothed ring 341 can drive the connecting gear 352 to rotate. The connecting gear 352 can drive the positioning screw 350 to rotate through the fixed shaft 351. The positioning screw 350 can drive the rotating cylinder 311 to rotate through the groove and the actuating block 312, so that the ball on the rotating cylinder 311 supports the flange ring 410.

[0060] The L-shaped rod 220 can be hooked onto the corresponding mounting bracket 112. The connecting screw is passed through the U-shaped seat 240 and screwed onto the bottom sliding plate 120, thus fixing the U-shaped seat 240 to the two bottom sliding plates 120. Then, the adjusting screw 211 can be rotated. Rotating the adjusting screw 211 causes the U-shaped seat 240 to push the sliding plates 120 upwards, thereby causing the sliding plates 120 to move the valve body 300 upwards, moving the valve body 300 out from between the two pipe bodies 400. At this point, the sliding plates 120 can be used to block the movement. The liquid inside the valve body 300 can be discharged through the circular groove and the drain pipe 111. The connecting screw 140 on the sliding plate 120 can be rotated to remove the connecting screw 140 from the sliding plate 120. The two adjacent sliding plates 120 can be separated, and then the valve body 300 can be removed. The new valve body 300 is placed on the sliding plate 120 and surrounded by the two sliding plates 120. The adjusting screw 211 is rotated in the opposite direction to move the new valve body 300 between the two pipe bodies 400.

[0061] Move the sliding ring 340 on the new valve body 300 toward the flange ring 310, causing the rotating shaft 331 to drive the abutment block 332 to rotate in the opposite direction, causing the abutment block 332 to push the sealing ring 320 into the interior of the adjacent pipe body 400, and causing the sliding ring 340 to drive the positioning screw 350 to move, causing the positioning screw 350 to be inserted into the adjacent flange ring 410. Then screw the nut 360 onto the positioning screw 350 to connect the valve body 300 and the pipe body 400. Finally, rotate the connecting screw 140 to separate the upper and lower adjacent sealing plates 110 and the sliding plate 120, thereby removing the sealing module 100.

[0062] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A triple-eccentric all-metal hard-seal butterfly valve, characterized in that, The valve body (300) includes a valve body (300), on both sides of which are pipe bodies (400). Flange rings (310) are fixedly connected to the sides of both ends of the valve body (300). Flange rings (410) are provided on the sides of the pipe bodies (400) corresponding to flange rings (310). Several positioning screws (350) passing through flange rings (410) are equidistantly arranged in a ring shape on the side of flange rings (310). A nut (360) is screwed onto one end of each positioning screw (350) and contacts the side of flange ring (410). A sealing module (100) is provided on the side of the valve body (300). The sealing module (100) includes four sealing plates (110), and adjacent sealing plates (110) are... The side of the sealing plate (110) is surrounded on the side of the flange ring 2 (410) on the same side. The side of the sealing plate (110) located on the side of the valve body (300) is fixedly connected with two limiting rods (130). The side of the sealing plate (110) located on the side of the valve body (300) is slidably connected with a sliding plate (120) that contacts the side of the adjacent flange ring 1 (310). Both sides of the sliding plate (120) are slidably connected to the inner side of the adjacent limiting rods (130). The top surfaces of the sealing plate (110) at the top and the top surfaces of the sliding plate (120) are screwed together with connecting screws (140). The top surfaces of the sealing plate (110) at the bottom and the sliding plate (120) are screwed together with the two adjacent connecting screws (140). Both ends of the inner side of the valve body (300) are slidably connected to sealing rings (320) that are slidably inserted into the inner side of the adjacent pipe body (400). Four U-shaped brackets (321) are fixedly connected to the opposite sides of the two sealing rings (320). Four adjusting boxes (330) are fixedly connected to the U-shaped brackets (321) on both sides of the valve body (300). The inner side of the adjusting box (330) is rotatably connected to a rotating shaft (331) that is rotatably connected to the inner side of the valve body (300). One end of the rotating shaft (331) extends into the interior of the adjacent U-shaped bracket (321). One end of the rotating shaft (331) is fixedly connected to an abutment block (332) that contacts the side of the adjacent sealing ring (320). The inner side of the regulating box (330) is rotatably connected to a connecting shaft (333). The side of the connecting shaft (333) and the end of the rotating shaft (331) located inside the regulating box (330) are both fixedly sleeved with bevel gears (335), and two adjacent bevel gears (335) mesh and drive each other. The side of the connecting shaft (333) is fixedly sleeved with an adjusting gear (334). The two sides of the valve body (300) are slidably connected with sliding rings (340). The two sliding rings (340) are opposite to each other and are fixedly connected with four racks (342) in the regulating box (330). The side of the rack (342) is slidably connected to the inner side of the adjacent regulating box (330), and the rack (342) meshes and drives the adjacent adjusting gear (334). The positioning screw (350) is fixedly connected to a fixed shaft (351) at one end away from the nut (360), and one end of the fixed shaft (351) is rotatably connected to the side of the sliding ring (340). A connecting gear (352) is fixedly sleeved on the side of the fixed shaft (351), and a toothed ring (341) that meshes with several connecting gears (352) is rotatably connected to the side of the sliding ring (340).

2. The triple-eccentric all-metal hard-seal butterfly valve according to claim 1, characterized in that, The two sealing plates (110) located at the top are fixedly connected to the back of each other with a drain pipe (111), and the side of the sealing plate (110) is provided with a circular groove corresponding to the drain pipe (111).

3. The triple-eccentric all-metal hard-seal butterfly valve according to claim 1, characterized in that, Four connecting mechanisms (150) are provided between two sealing plates (110) at the same height. Each connecting mechanism (150) includes two fixed seats (151). The side of the fixed seat (151) is fixedly connected to the side of the adjacent sealing plate (110). A support cylinder (152) is rotatably connected to the side of one fixed seat (151). A support rod (153) that is fixedly connected to the side of the other fixed seat (151) is screwed onto the inner side of the support cylinder (152).

4. A triple-eccentric all-metal hard-seal butterfly valve according to claim 1, characterized in that, The sealing module (100) is provided with a push module (200) at the bottom. The push module (200) includes a connecting rod (210). The side of the connecting rod (210) is rotatably connected to an adjusting screw (211). The top of the connecting rod (210) is provided with a U-shaped seat (240) that is screwed into the adjusting screw (211). The top of the U-shaped seat (240) is screwed into a connecting screw that is screwed into an adjacent sliding plate (120). The top surface of the connecting rod (210) is fixedly connected to two round rods (230). The top ends of the two round rods (230) are fixedly connected to a positioning plate (250) that is rotatably connected to the top end of the adjusting screw (211).

5. A triple-eccentric all-metal hard-seal butterfly valve according to claim 4, characterized in that, The connecting rod (210) has L-shaped rods (220) slidably connected to both sides of its side. The sealing plate (110) has a mounting bracket (112) fixedly connected to the side away from the sliding plate (120), and the top of the L-shaped rod (220) contacts the inner side of the mounting bracket (112).

6. A triple-eccentric all-metal hard-seal butterfly valve according to claim 1, characterized in that, The positioning screw (350) has a sliding connection to a screw-in cylinder (311) that is screwed into the inner side of flange ring one (310). One end of the screw-in cylinder (311) has several spheres that are in contact with the side of flange ring two (410). The inner side of the screw-in cylinder (311) is fixedly connected to two actuating blocks (312). The positioning screw (350) has two grooves that are slidably connected to the sides of adjacent actuating blocks (312).

7. A method for adjusting the triple eccentric all-metal hard-seal butterfly valve as described in claim 1, characterized in that, The specific operating steps for using this butterfly valve are as follows: Step 1: When the valve body (300) needs to be replaced, surround the sealing plate (110) on the flange ring 2 (410) and surround the two adjacent sliding plates (120) on the flange ring 1 (310). Connect the two adjacent sealing plates (110) and the two adjacent sliding plates (120) through the connecting screw (140). Step 2: Unscrew the nut (360) to move the sliding ring (340) away from the flange ring one (310), disengage the positioning screw (350) from the flange ring two (410), and at the same time, the sliding ring (340) will drive the rack (342) to move, causing the rotating shaft (331) to drive the abutment block (332) to rotate, and the sealing ring (320) will be disengaged from the pipe body (400) through the abutment block (332). Rotate the gear ring (341) to turn the connecting gear (352) to rotate, so that the positioning screw (350) drives the rotating cylinder (311) to rotate through the actuating block (312), and the spherical top on the rotating cylinder (311) will be supported on the flange ring two (410); Step 3: Hook the L-shaped rod (220) onto the corresponding mounting bracket (112), and fix the U-shaped seat (240) to the two bottom sliding plates (120) with the connecting screws. Rotate the adjusting screw (211) to push the U-shaped seat (240) upward to the sliding plate (120) and the valve body (300), and move the valve body (300) out from between the two pipes (400). Discharge the liquid in the valve body (300) through the round groove and the drain pipe (111). Unscrew the connecting screw (140) from the sliding plate (120), separate the two adjacent sliding plates (120), and then take out the valve body (300). Step 4: Place the new valve body (300) on the slide plate (120) and surround the new valve body (300) with the slide plate (120), so that the adjusting screw (211) rotates in the opposite direction and moves the new valve body (300) between the two pipe bodies (400); Step 5: Move the sliding ring (340) on the new valve body (300) toward the flange ring one (310), rotate the abutment block (332) in the opposite direction, insert the sealing ring (320) into the adjacent pipe body (400), and insert the positioning screw (350) into the adjacent flange ring two (410). Then screw the nut (360) onto the positioning screw (350) to connect the valve body (300) and the pipe body (400) to each other. Finally, unscrew the connecting screw (140) to separate the two adjacent sealing plates (110) and the two adjacent sliding plates (120), thereby removing the sealing module (100).

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