High temperature regulating butterfly valve

Abstract

The application discloses a high-temperature regulating butterfly valve and belongs to the technical field of butterfly valves. The high-temperature regulating butterfly valve comprises a valve body, a shell body for accommodating a butterfly valve control assembly is arranged on the top of the valve body, a valve clack is arranged on the valve body and is matched with the inner wall of the valve body, and adjusting pieces are symmetrically connected to the front and rear outer walls of the valve clack. The front and rear sides of the valve clack are clamped by first clamping blocks, so that the situation that the valve clack is not tightly closed due to excessive rotation of a valve column is avoided, the second hand valve is rotated to the second clamping block to clamp the first clamping block, the supporting force of the first clamping block on the valve clack is further enhanced, the stability of the valve clack is enhanced, the annular air bag is continuously pushed to expand and abut against the front and rear sides of the valve clack, the valve clack is strengthened, the valve clack is prevented from being deviated due to the increase of the pressure in the pipeline under high temperature, the closing state of the valve clack is affected, the valve clack is better fixed and sealed, and the use effect of the butterfly valve under high temperature is further improved.

Description

Technical Field

[0001] This invention relates to the field of butterfly valve technology, and more particularly to a regulating butterfly valve for high-temperature applications. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve used for on / off control of low-pressure pipeline media. A butterfly valve is characterized by its closing element (valve disc or butterfly plate) being a disk that rotates around a valve shaft to open and close. Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, slurry, oil, liquid metals, and radioactive media. In pipelines, they primarily function as shut-off and throttling devices. The butterfly valve's opening and closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body, thereby achieving opening, closing, or regulation.

[0003] Butterfly valves are generally used in low-pressure pipelines. When the temperature of the medium in the pipeline changes and causes a large temperature difference, or when used to control some high-temperature media, the increase in temperature in the pipeline will also cause a corresponding increase in pressure in the pipeline, which may lead to functional effects such as valve disc displacement, reducing the stability of the butterfly valve. In order to address the above problems, the applicant proposes a high-temperature regulating butterfly valve vacuum circuit breaker to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-temperature regulating butterfly valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This invention provides a high-temperature regulating butterfly valve, comprising a valve body, an outer shell for accommodating a butterfly valve control component at the top of the valve body, a valve disc adapted to the inner wall of the valve body, adjusting members symmetrically connected to the front and rear outer walls of the valve disc, telescopic rods symmetrically arranged on the adjusting members, a second movable plug connected to one end of the telescopic rod, and a second locking block connected to the other end of the telescopic rod, an air chamber communicating with a cavity inside the adjusting member, one end of the telescopic rod with the second movable plug penetrating through the air chamber, the air chamber being adapted to the second movable plug, annular air bladders symmetrically arranged on the inner wall of the valve body, a reinforcing air bladder connected to the annular air bladder, a first locking block adapted to the valve disc being movably installed on the valve body, the telescopic rod pushing the first locking block to compress the reinforcing air bladder when extended, a valve column penetrating through the center of the valve disc, a top-open circular groove opened at one end of the valve column, and a cavity communicating with the circular groove inside the valve column, a circular rod arranged in the circular groove, and a first movable plug adapted to the circular groove being arranged below the circular rod.

[0007] Preferably, the top of the outer casing is provided with a first hand valve and a second hand valve. A half gear is connected to the outer wall of one end of the valve column with a circular groove. The half gear is located inside the outer casing, and a gear meshing with the half gear is provided inside the outer casing. A rotating shaft connected to the first hand valve passes through the gear. The end of the rotating shaft away from the first hand valve is rotatably connected to the inner wall of the outer casing.

[0008] Preferably, one end of the round rod passes through the outer casing and is connected to the second hand valve, and the other end of the round rod is rotatably connected to a polygonal block. The polygonal block is connected to the inner wall of the round groove. The outer wall of the round rod is threaded, and a movable block that is threadedly connected to the round rod passes through it. The outer wall of the movable block is provided with a slide rail that is slidably connected to the inner wall of the round groove.

[0009] Preferably, a connecting rod is symmetrically connected to the top of the first movable plug, and the end of the connecting rod away from the first movable plug is connected to the bottom of the movable block. The connecting rod is also connected to the polygonal block with a clearance fit.

[0010] Preferably, one end of the first locking block is rotatably connected to a connecting block, and a torsion spring is provided between the first locking block and the connecting block.

[0011] Preferably, the inner wall of the valve body is symmetrically provided with annular grooves, and the annular grooves are symmetrically provided with slots that communicate with the annular grooves. The annular airbag is located inside the annular groove and is adapted to the annular groove. The part of the annular airbag with a reinforcing airbag is located inside the slot. The connecting block is slidably connected to the slot and is in contact with and adapted to the reinforcing airbag.

[0012] Preferably, the first locking block is positioned corresponding to the telescopic rod, and the first locking block is adapted to the second locking block.

[0013] Preferably, the valve disc corresponds to and is adapted to the position of the annular airbag.

[0014] The technical solution provided by this invention has the following advantages compared with known public technologies:

[0015] 1. When the valve disc rotates to close, the valve disc contacts one end of the arc-shaped inclined surface of the first locking block and continues to rotate, causing the first locking block to open to a right angle with the locking groove. At this time, the valve disc is completely closed, and the first locking block locks the front and rear sides of the valve disc respectively, preventing the valve disc from closing incompletely due to excessive rotation of the valve column.

[0016] 2. Rotate the second hand valve until the second locking block locks the first locking block, further enhancing the supporting force of the first locking block on the valve disc, thereby strengthening the stability of the valve disc. Continuously push to inflate the annular airbag and press it against the front and rear sides of the valve disc respectively, strengthening the valve disc and preventing the valve disc from shifting due to increased pressure in the pipeline under high temperature conditions, thus affecting the closing state of the valve disc and providing a better fixing and sealing effect for the valve disc.

[0017] 3. At high temperatures, the gas inside the annular airbag expands to a certain extent, thereby enhancing the force exerted by the annular airbag on the valve disc and further improving the butterfly valve's performance at high temperatures. Attached Figure Description

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

[0019] Figure 1 This is a front view of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the valve plate after it is closed according to the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the annular airbag after inflation according to the present invention.

[0023] Figure 5 This is a partial cross-sectional view of the outer casing and valve stem of the present invention.

[0024] Figure 6 This is a cross-sectional view of the valve stem of the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of the round rod and the first movable plug of the present invention.

[0026] Figure 8 This is a cross-sectional view of the valve stem and regulating component of the present invention.

[0027] Figure 9 This is a schematic diagram of the structure of the first card block and the connecting block of the present invention.

[0028] Figure 10 This is a schematic diagram of the structure of the annular airbag of the present invention.

[0029] Figure 11 This is a cross-sectional view of the annular groove of the present invention.

[0030] Figure 12 This is a cross-sectional view of the valve body of the present invention.

[0031] The labels in the diagram represent: 1. Valve body; 2. Outer shell; 3. Valve disc; 4. Adjusting component; 5. First locking block; 6. Annular airbag; 7. Reinforcing airbag; 8. Annular groove; 9. Locking groove; 10. Connecting block; 11. Torsion spring; 12. Valve column; 13. Cavity; 14. Air chamber; 15. Telescopic rod; 16. Circular groove; 17. Half gear; 18. Gear; 19. First manual valve; 20. Second manual valve; 21. Circular rod; 22. Multi-faceted block; 23. Movable block; 24. Connecting rod; 25. First movable plug; 26. Second movable plug. Detailed Implementation

[0032] 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] The present invention will be further described below with reference to embodiments.

[0034] Example: Figure 1-12As shown, the present invention provides a high-temperature regulating butterfly valve, including a valve body 1. The top of the valve body 1 is provided with an outer shell 2 for accommodating the butterfly valve control components. A valve disc 3 adapted to the inner wall of the valve body 1 is provided on the valve body 1. A high-temperature resistant sealing ring is provided on the inner wall of the valve body 1. Adjusting members 4 are symmetrically connected to the front and rear outer walls of the valve disc 3. Only one adjusting member 4 is provided on one half of the valve disc 3. Adjusting members 4 are symmetrically connected to the front and rear outer walls of the valve disc 3. Telescopic rods 15 are symmetrically arranged on the adjusting members 4. One end of the telescopic rod 15 is connected to a second movable plug 26, and the other end of the telescopic rod 15 is connected to a second locking block. The interior of the adjusting member 4 is provided with an air chamber 14 communicating with a cavity 13. The end of the telescopic rod 15 with the second movable plug 26 passes through... Air chamber 14 is adapted to the second movable plug 26. Circular airbags 6 are symmetrically arranged on the inner wall of valve body 1. Reinforcing airbags 7 are connected to the circular airbags 6 and communicate with the circular airbags 6. A first locking block 5 adapted to valve disc 3 is movably installed on valve body 1. When the telescopic rod 15 extends, it pushes the first locking block 5 to squeeze the reinforcing airbag 7. A valve column 12 passes through the center of valve disc 3. One end of the valve column 12 has a top-open circular groove 16. The other end of the valve column 12 is rotatably connected to valve body 1. A cavity 13 communicating with the circular groove 16 is provided inside the valve column 12. The cavity 13 is located in the center of valve disc 3. A circular rod 21 is provided inside the circular groove 16. A first movable plug 25 adapted to the circular groove 16 is provided below the circular rod 21.

[0035] The top of the outer casing 2 is provided with a first hand valve 19 and a second hand valve 20. The outer wall of one end of the valve column 12 with a circular groove 16 is connected to a half gear 17. The half gear 17 is located inside the outer casing 2, and the inner wall of the outer casing 2 is provided with a gear 18 that meshes with the half gear 17. A rotating shaft is passed through the gear 18, one end of which is connected to the first hand valve 19. The end of the rotating shaft away from the first hand valve 19 is rotatably connected to the inner wall of the outer casing 2. Rotating the first hand valve 19 causes the first hand valve 19 to drive the gear 18 to rotate, thereby causing the half gear 17 to rotate and drive the valve disc 3 to open or close, thus completing the control of the fluid in the pipeline.

[0036] By adopting the above technical solution, one end of the round rod 21 passes through the outer shell 2 and is connected to the second hand valve 20, and the other end of the round rod 21 is rotatably connected to the polygonal block 22. The polygonal block 22 is connected to the inner wall of the round groove 16. The outer wall of the round rod 21 is threaded, and a movable block 23 that is threadedly connected to the round rod 21 passes through the round rod 21. The outer wall of the movable block 23 is provided with a slide rail that is slidably connected to the inner wall of the round groove 16. Rotating the second hand valve 20 can drive the round rod 21 to rotate, so that the movable block 23 can be driven on the round rod 21. The inner wall of the round groove 16 is provided with a slide groove that matches the slide rail on the outer wall of the movable block 23. The bottom of the slide groove is above the polygonal block 22.

[0037] A connecting rod 24 is symmetrically connected to the top of the first movable plug 25. The end of the connecting rod 24 away from the first movable plug 25 is connected to the bottom of the movable block 23. The connecting rod 24 is connected to the polygonal block 22 with a clearance fit. The connecting rod 24 and the polygonal block 22 do not interfere with each other. At the same time, the connecting rod 24 moves synchronously, thereby causing the first movable plug 25 to move up and down in the circular groove 16, compressing the gas in the cavity 13. The compressed gas in the cavity 13 pushes the second movable plug 26, causing the telescopic rods 15 on the front and rear sides of the valve disc 3 to extend, thus enabling the second... The first locking block 5 is locked in place by the second locking block under the continuous push of the gas, which further strengthens the firmness of the valve disc 3. This causes the connecting block 10 to slide into the slot 9 and squeeze the reinforcing airbag 7, so that the gas in the reinforcing airbag 7 is squeezed into the annular airbag 6, causing the annular airbag 6 to expand. This further fixes and seals the valve disc 3. At high temperatures, the gas in the annular airbag 6 expands to a certain extent, which strengthens the valve disc 3 and effectively improves the butterfly valve's performance at high temperatures.

[0038] By adopting the above technical solution, one end of the first locking block 5 is rotatably connected to the connecting block 10, and a torsion spring 11 is provided between the first locking block 5 and the connecting block 10. One end of the first locking block 5 is provided with an arc-shaped inclined surface. When the valve disc 3 is in the open state, the first locking block 5 is in contact with the inner wall of the valve body 1 due to the influence of the torsion spring 11. When the valve disc 3 rotates to close, the valve disc 3 rotates to contact the first locking block 5. The valve disc 3 contacts one end of the arc-shaped inclined surface of the first locking block 5 and continues to rotate, driving the first locking block 5 to open to a right angle with the locking groove 9. At this time, the valve disc 3 is completely closed. The first locking block 5 locks the front and rear sides of the valve disc 3 respectively, avoiding the valve disc 3 from not closing tightly due to excessive rotation of the valve column 12. When it is necessary to open the valve disc 3, only the valve column 12 needs to be rotated in the opposite direction. The first locking block 5 does not interfere with the reversal of the valve disc 3.

[0039] The inner wall of the valve body 1 is symmetrically provided with annular grooves 8, and the annular grooves 8 are symmetrically provided with slots 9 that communicate with the annular grooves 8. The annular airbag 6 is located inside the annular groove 8 and is adapted to the annular groove 8. The part of the annular airbag 6 with a reinforcing airbag 7 is located inside the slot 9. The connecting block 10 is slidably connected to the slot 9, and the connecting block 10 is in contact with the reinforcing airbag 7 and is adapted to the annular groove 8. When the valve disc 3 rotates forward and backward, the annular airbag 6 is located inside the annular groove 8 and does not interfere with the movement of the valve disc 3. Rotating the second hand valve 20 can force the air in the reinforcing airbag 7 into the annular airbag 6, which further strengthens the starting effect of the valve disc 3 and effectively improves the stability of the high-temperature butterfly valve.

[0040] By adopting the above technical solution, the first locking block 5 and the telescopic rod 15 are positioned correspondingly, and the first locking block 5 is adapted to the second locking block. The first locking block 5 and the telescopic rod 15 set on the front and rear sides of the valve disc 3 are both located on both sides of the valve column 12, and do not interfere with the movement of the valve disc 3.

[0041] The valve disc 3 and the annular air bag 6 are positioned and adapted to each other. After the internal air pressure of the two annular air bags 6 increases, part of the annular air bag 6 protrudes from the annular groove 8 and abuts against the front and rear sides of the valve disc 3 respectively, which strengthens the valve disc 3 and prevents the increased pressure in the pipeline under high temperature conditions from affecting the closure of the valve disc 3.

[0042] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-temperature regulating butterfly valve, comprising a valve body (1), wherein the top of the valve body (1) is provided with an outer housing (2) for accommodating a butterfly valve control assembly, and a valve disc (3) adapted to the inner wall of the valve body (1) is provided on the valve body (1), characterized in that, Adjusting components (4) are symmetrically connected to the front and rear outer walls of the valve disc (3). Telescopic rods (15) are symmetrically arranged on the adjusting components (4). One end of the telescopic rod (15) is connected to a second movable plug (26), and the other end of the telescopic rod (15) is connected to a second locking block. The adjusting component (4) has an air chamber (14) communicating with the cavity (13). One end of the telescopic rod (15) with the second movable plug (26) passes through the air chamber (14). The air chamber (14) and... The second movable plug (26) is adapted; the inner wall of the valve body (1) is symmetrically provided with annular airbags (6), and a reinforcing airbag (7) is connected to the annular airbags (6); a first locking block (5) adapted to the valve disc (3) is movably installed on the valve body (1); a connecting block (10) is rotatably connected to one end of the first locking block (5), and a torsion spring (11) is provided between the first locking block (5) and the connecting block (10); the inner wall of the valve body (1) is provided with an annular groove (8), and the annular groove (8) The annular airbag (6) is provided with a slot (9) that communicates with the annular groove (8). The annular airbag (6) is located inside the annular groove (8) and is adapted to the annular groove (8). The part of the annular airbag (6) with a reinforcing airbag (7) is located inside the slot (9). The connecting block (10) is slidably connected to the slot (9) and is in contact with and adapted to the reinforcing airbag (7). When the telescopic rod (15) extends, it pushes the first locking block (5) to squeeze the reinforcing airbag (7). A locking block (5) is positioned corresponding to the telescopic rod (15), and the first locking block (5) is adapted to the second locking block; a valve column (12) passes through the center of the valve disc (3), and a top-open circular groove (16) is opened at one end of the valve column (12), and a cavity (13) communicating with the circular groove (16) is provided inside the valve column (12), a circular rod (21) is provided in the circular groove (16), and a first movable plug (25) adapted to the circular groove (16) is provided below the circular rod (21).

2. The high-temperature regulating butterfly valve according to claim 1, characterized in that, The top of the outer casing (2) is provided with a first hand valve (19) and a second hand valve (20). The valve column (12) has a circular groove (16) at one end of its outer wall connected to a half gear (17). The half gear (17) is located inside the outer casing (2), and the inner wall of the outer casing (2) is provided with a gear (18) that meshes with the half gear (17). A rotating shaft with one end connected to the first hand valve (19) passes through the gear (18), and the end of the rotating shaft away from the first hand valve (19) is rotatably connected to the inner wall of the outer casing (2).

3. The high-temperature regulating butterfly valve according to claim 2, characterized in that, One end of the round rod (21) passes through the outer shell (2) and is connected to the second hand valve (20), and the other end of the round rod (21) is rotatably connected to a polygonal block (22). The polygonal block (22) is connected to the inner wall of the circular groove (16). The outer wall of the round rod (21) is threaded, and a movable block (23) that is threadedly connected to the round rod (21) passes through the round rod (21). The outer wall of the movable block (23) is provided with a slide rail that is slidably connected to the inner wall of the circular groove (16).

4. The high-temperature regulating butterfly valve according to claim 3, characterized in that, A connecting rod (24) is symmetrically connected to the top of the first movable plug (25). The end of the connecting rod (24) away from the first movable plug (25) is connected to the bottom of the movable block (23). The connecting rod (24) is connected to the polygonal block (22) with a clearance fit.

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