Aluminum industry high-temperature flue butterfly valve device for energy recovery

Abstract

The invention relates to the field of flue valve equipment, in particular to an aluminum industry high-temperature flue butterfly valve device for energy recovery, which comprises a support, a water tank and a butterfly valve, the butterfly valve comprises a valve pipe, a fire-resistant ring is coaxially arranged on the inner side wall of the valve pipe, a shaft pipe is rotatably arranged on the valve pipe, the axis of the shaft pipe is perpendicular to the axis of the valve pipe, and the shaft pipe is rotatably arranged on the fire-resistant ring in a penetrating manner; a hollow valve plate is arranged on the shaft pipe and in the fire-resistant ring, the valve plate is used for blocking the fire-resistant ring, a plurality of medium holes communicated with the interior of the valve plate are formed between the inner side wall and the outer side wall of the shaft pipe, a rotating piece for driving the shaft pipe to rotate is arranged on the support, and flue pipes are arranged at the two ends of the valve pipe correspondingly; a connecting piece used for communication is arranged between the end of the valve pipe and the flue pipe, the flue pipe is arranged on the support, medium pipes are connected between the two ends of the shaft pipe and the water tank, and a water pump electrically connected to a control system is arranged on the medium pipe at one end of the shaft pipe. The device has the effects of energy recovery, long service life and convenience in maintenance.

Description

Technical Field

[0001] This application relates to the field of flue valve equipment, and particularly to a high-temperature flue butterfly valve device for aluminum industry energy recovery. Background Art

[0002] An aluminum alloy reverberatory furnace provides heat through natural gas combustion and then is used for melting aluminum alloy in the furnace. After natural gas combustion, a large amount of high-temperature flue gas is generated, with a temperature up to over 1000 °C. The high-temperature flue gas enters the heat recovery device through the flue. After the heat of the flue gas is recovered, the temperature drops below 200 °C. During the production operation of the equipment, the internal temperature of the flue has been continuously above 1000 °C. In order to adjust and control the amount of high-temperature flue gas passing through the flue, high-temperature valves are required on the flue.

[0003] The high-temperature flue butterfly valve is one of the valves used for flue gas discharge, control, and regulation, and is widely used in the control of flue gas in metallurgy, chemical industry, and waste incineration, etc. The traditional high-temperature electric butterfly valve mainly consists of three major parts: a valve body, a valve plate, and an electric actuator.

[0004] In the early stage, the valve plate was cast from pig iron. During the use of the valve plate, due to the high temperature in the flue, the cast iron valve plate would have serious deformation, greatly affecting the fitting accuracy of the valve plate. At the same time, the high-temperature flue gas would cause serious corrosion to the cast iron valve plate, greatly affecting the service life of the valve plate. Therefore, the currently industry-wide common butterfly valve plate is an improvement based on the early valve plate. The main method is to change the cast iron part of the valve plate to a stainless steel structure welded part, and then pour high-temperature refractory material on the outside of the steel structure.

[0005] This approach can effectively avoid the corrosion of the steel parts of the valve plate by high-temperature flue gas and effectively improve the service life of the valve plate. However, there is another key problem. Since the valve plate is always in the high-temperature environment of the flue, the welded stainless steel parts of the valve plate will still have serious deformation problems in the high-temperature environment. And the high-temperature refractory material basically does not undergo thermal deformation. Thus, when the stainless steel parts in the valve plate expand due to heat, it will cause the high-temperature refractory material to crack, and further affect the service life of the butterfly valve, having deficiencies. Summary of the Invention

[0006] In order to improve the problem that the service life of the butterfly valve is easily reduced when the valve plate expands due to heat, this application provides a high-temperature flue butterfly valve device for aluminum industry energy recovery.

[0007] A high-temperature flue butterfly valve device for aluminum industry energy recovery provided by this application adopts the following technical solutions: A high-temperature flue butterfly valve device for aluminum industry for energy recovery, comprising a bracket, a water tank and a butterfly valve, the butterfly valve comprising a valve pipe, a refractory ring being coaxially arranged on the inner side wall of the valve pipe, a shaft pipe being rotatably arranged on the valve pipe, the axis of the shaft pipe being perpendicular to the axis of the valve pipe, the shaft pipe being rotatably inserted through the refractory ring, a valve plate with a hollow interior being arranged on the shaft pipe and within the ring of the refractory ring, the valve plate being used to seal the refractory ring, a plurality of medium holes being opened between the inner and outer side walls of the shaft pipe and communicating with the interior of the valve plate, the plurality of medium holes being arranged along the axial direction of the shaft pipe, a rotating member for driving the shaft pipe to rotate being provided on the bracket, a flue pipe being provided at both ends of the valve pipe, a connecting member for communication being provided between the end of the valve pipe and the flue pipe, the flue pipe being provided on the bracket, a medium pipe being connected between both ends of the shaft pipe and the water tank, and a water pump electrically connected to a control system being provided on the medium pipe at one end of the shaft pipe.

[0008] By adopting the above technical solution, the control system starts the water pump, and the water pump causes the water in the water tank to flow into one end of the valve pipe through the medium pipe. The water in the valve pipe flows into the valve plate through the medium hole, and then flows back into the valve pipe from the valve plate, and finally flows back to the water tank from the other end of the valve pipe through the medium pipe. During this process, the high-temperature flue gas in the flue pipe will cause the surface of the valve plate to heat up, and the water flowing in the valve plate will take away the heat transferred to the valve plate, thereby lowering the temperature of the valve plate, thereby reducing the thermal expansion amplitude of the valve plate, and then reducing the impact of the valve plate on the refractory ring, thereby increasing the service life of the butterfly valve. At the same time, the water flowing in the valve plate will transfer the high temperature in the flue pipe to the water tank, thereby obtaining heated water, thereby realizing the recovery and reuse of energy in the flue pipe and improving the utilization rate of energy.

[0009] Optionally, the valve plate includes a sleeve, an inner plate and an outer shell, the sleeve is coaxially sleeved on the shaft tube, the sleeve and the outer shell are both made of refractory ceramic material, the inner plate is arranged on the shaft tube, the outer shell is located on both sides of the inner plate, the outer shell is arranged on the sleeve, there is a distance between the inner plate and the outer shell, a fixing screw is provided on the inner plate, the fixing screw passes through the outer shell, and a fixing nut is threadedly connected to the fixing screw on the side of the outer shell facing away from the inner plate.

[0010] By adopting the above technical solution, workers use ceramic glue to seal and bond the outer shells, the outer shells and the shaft sleeve, and the outer shell and the fixed screw, and fix them with fixing nuts. Since the shaft sleeve and the outer shell are made of refractory ceramic materials, the high temperature in the flue pipe has little effect on the thermal expansion and corrosion of the shaft sleeve and the outer shell, which is beneficial to improve the service life of the butterfly valve.

[0011] Optionally, the rotating member includes outer tubes disposed on the valve tube and located at both ends of the shaft tube. A sealing plate is provided at one end of the outer tube facing away from the valve tube. The shaft tube rotates through the sealing plate. A through-hole is opened between the inner and outer side walls of the shaft tube within the outer tube. A connecting flange is provided between the medium tube and the outer tube. A sealing column is coaxially provided at the end of the shaft tube. A rotating motor electrically connected to the control system is provided on the bracket. A transmission cylinder is coaxially provided on one of the sealing columns. The transmission cylinder is slidably sleeved on the output shaft of the rotating motor. The cross-section of the inner ring of the transmission cylinder and the cross-section of the end of the output shaft of the rotating motor are both polygonal. An encoder electrically connected to the control system is provided on the outer tube at the end of the shaft tube facing away from the rotating motor.

[0012] By adopting the above technical solution, when the valve plate needs to rotate a certain angle, the control system starts the rotating motor. The output shaft of the rotating motor drives the shaft tube to rotate through the transmission cylinder and the sealing column. During this process, the encoder continuously feedbacks the rotation angle of the shaft tube until the designed angle is reached. At this time, the rotating motor stops working. During this process, the water in the medium tube flows into the outer tube through the connecting flange and then into the shaft tube through the through-hole, thereby reducing the influence of the rotation of the shaft tube on the water flow in the medium tube.

[0013] Optionally, an angle plate is provided on the outer tube near the rotating motor. An angle control disk is coaxially provided on the transmission cylinder. An angle control cylinder is threadedly connected to the angle control disk. The interior of the angle control cylinder is hollow and open at one end facing the angle plate. An angle control column is coaxially and slidably provided on the angle control cylinder. A compression spring is propped between the angle control column and the closed end of the angle control cylinder. A plurality of fixed-angle holes are circumferentially opened on the angle plate along the axis of the transmission cylinder. The end of the angle control column is rounded. The angle control column is used to abut against and slidably cooperate with the fixed-angle holes.

[0014] By adopting the above technical solution, during the rotation of the shaft tube, the shaft tube drives the angle control disk to rotate through the sealing column and the transmission cylinder. During the process that the angle control disk drives the angle control cylinder and the angle control column to rotate synchronously, the compression spring deforms, causing the rounded end of the angle control column to slide out of the fixed-angle hole to outside the fixed-angle hole. Until after the shaft tube rotates a specified angle, the rounded end of the angle control column abuts against the fixed-angle hole, thereby reducing the possibility of the shaft tube rotating unexpectedly again after rotating a certain angle.

[0015] Optionally, the connecting member includes a connecting pipe coaxially and slidably sleeved on the end of the valve pipe. A connecting end ring is coaxially arranged on the connecting pipe. A plurality of connecting columns are evenly arranged on the connecting end ring in the circumferential direction along its axis. A splicing end ring is coaxially arranged at the end of the flue pipe. A plurality of connecting holes for inserting the connecting columns are formed in the splicing end ring. The connecting columns and the connecting holes are in one-to-one correspondence. A connecting electric cylinder electrically connected to the control system is arranged on the valve pipe. The connecting pipe is arranged on the piston rod of the connecting electric cylinder.

[0016] By adopting the above technical solution, when the control system starts the connecting electric cylinder, the piston rod of the connecting electric cylinder pushes the connecting pipe to slide. The connecting pipe drives the connecting columns on the connecting end ring to insert into the connecting holes on the splicing end ring, thereby achieving the effect of quickly installing the valve pipe on the flue pipe.

[0017] Optionally, a sliding seat is arranged on the bracket. A supporting seat is slidably arranged on the sliding seat. An oil cylinder electrically connected to the control system is arranged on the bracket. The supporting seat is arranged on the piston rod of the oil cylinder. The cross section of the supporting seat is C-shaped. The valve pipe is arranged on the C-shaped concave side of the supporting seat. A positioning member for positioning is arranged between the supporting seat and the valve pipe. A lane-changing assembly is arranged on the bracket. The lane-changing assembly is used to block both ends of the valve pipe and connect the flue pipes at both ends of the valve pipe.

[0018] By adopting the above technical solution, when the butterfly valve needs to be replaced, the lane-changing assembly blocks both ends of the valve pipe and connects the flue pipes at both ends of the valve pipe. At this time, the high-temperature flue gas in the flue pipe flows normally. Then the worker removes the medium pipe through the connecting flange. After that, the control system starts the connecting electric cylinder, and the piston rod of the connecting electric cylinder contracts, so that the connecting columns on the connecting end ring are separated from the connecting holes on the splicing end ring. At this time, the control system starts the oil cylinder, and the piston rod of the oil cylinder pushes the supporting seat to slide. The supporting seat drives the valve pipe to slide synchronously. The transmission cylinder on the valve pipe is gradually separated from the output shaft of the rotating motor. Then the worker transfers the butterfly valve through the hoisting equipment, hoists a new butterfly valve and realizes the attitude positioning of the butterfly valve through the positioning member, and finally completes the replacement of the butterfly valve. During this process, the flue pipe is normally used, and the replacement of the butterfly valve is simple and convenient, which is beneficial to reducing the maintenance cost of the butterfly valve.

[0019] Optionally, the positioning member includes positioning blocks arranged on both sides in the axial direction of the valve pipe. Positioning grooves are formed on both sides of the supporting seat in the axial direction of the valve pipe. The positioning blocks and the positioning grooves are in one-to-one correspondence. The positioning blocks are inserted into the positioning grooves.

[0020] By adopting the above technical solution, when the hoisting equipment hoists the butterfly valve, the insertion fit between the positioning blocks on the valve pipe and the positioning grooves on the supporting seat is beneficial to reducing the difficulty of the worker in positioning the butterfly valve.

[0021] Optionally, the channel changing assembly includes a riser arranged on the flue pipe, the riser is symmetrically arranged at both ends of the valve pipe, the riser is connected to the flue pipe, a channel changing plate is vertically slidably arranged in the riser, and a lifting member for driving the channel changing plate to slide vertically is provided on the bracket, smoke passage grooves are opened on both sides of the channel changing plate along the axial direction of the flue pipe, the smoke passage grooves are used to communicate with the flue pipe, a smoke connecting pipe is provided between the two channel changing plates, a smoke changing port is opened on the side of the channel changing plate facing away from the valve pipe, the smoke changing port is located below the smoke passing slot, and a plate groove is opened between the smoke changing port of the channel changing plate and the smoke connecting pipe.

[0022] By adopting the above technical solution, when the butterfly valve needs to be replaced, the lifting part drives the changing plate to rise. At this time, the smoke groove on the changing plate gradually staggers with the flue pipe. At the same time, the rising pipe will gradually block the smoke groove, and the changing plate will gradually block the flue pipe. As the changing plate continues to rise, the smoke exchange port on the changing plate will gradually be connected with the flue pipe. At this time, the high-temperature flue gas in the flue pipe will flow from the flue pipe at one end of the valve pipe to the flue pipe at the other end along the order of smoke exchange port, plate groove, connecting smoke pipe, plate groove and smoke exchange port. During this process, the flue pipe can discharge high-temperature flue gas normally.

[0023] Optionally, the lifting member includes a reduction gear box arranged on the bracket, a winding wheel is provided at the output end of the reduction gear box, a pull rope is wound on the winding wheel, and the end of the pull rope facing away from the winding wheel is provided on the smoke pipe, and a lifting motor electrically connected to the control system is provided on the bracket, and the output shaft of the lifting motor is connected to the input end of the reduction gear box.

[0024] By adopting the above technical solution, the control system starts the lifting motor, and the output shaft of the lifting motor drives the winding wheel to rotate forward through the reduction gear box. The winding wheel reels in the pull rope, and the pull rope pulls the smoke tube up, and the smoke tube drives the lane changing plate to rise, thereby achieving the effect of vertical sliding of the lane changing plate.

[0025] Optionally, a partition is provided in the middle of the shaft tube, and the medium holes are distributed on both sides of the partition.

[0026] By adopting the above technical solution, the partition allows the water at one end of the shaft tube to flow into the valve plate through the medium hole, and then flow back into the shaft tube through the medium hole at the other end of the shaft tube, so that the water in the valve plate can flow continuously, thereby accelerating the cooling effect of the valve plate.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. The control system starts the water pump, which causes the water in the water tank to flow into one end of the valve pipe through the medium pipe. The water in the valve pipe flows into the valve plate through the medium hole, then flows back into the valve pipe from the valve plate, and finally flows back to the water tank from the other end of the valve pipe through the medium pipe. During this process, the high-temperature flue gas in the flue pipe will heat up the surface of the valve plate. The water flowing in the valve plate will take away the heat transferred to the valve plate, thereby lowering the temperature of the valve plate, thereby reducing the thermal expansion of the valve plate and the impact of the valve plate on the refractory ring, thereby increasing the service life of the butterfly valve. At the same time, the water flowing in the valve plate will transfer the high temperature in the flue pipe to the water tank, thereby obtaining heated water, thereby realizing the recovery and reuse of energy in the flue pipe and improving the utilization rate of energy; 2. When the butterfly valve needs to be replaced, the channel-changing assembly blocks both ends of the valve pipe and connects the flue pipes at both ends of the valve pipe. At this time, the high-temperature flue gas in the flue pipe flows normally. Then the worker removes the medium pipe through the connecting flange. After that, the control system starts the connecting electric cylinder. The piston rod of the connecting electric cylinder contracts, separating the connecting column on the connecting end ring from the connecting hole on the splicing end ring. At this time, the control system starts the oil cylinder. The piston rod of the oil cylinder pushes the support seat to slide. The support seat drives the valve pipe to slide synchronously. The transmission cylinder on the valve pipe is gradually separated from the output shaft of the rotating motor. Then the worker transfers the butterfly valve through the lifting equipment, lifts the new butterfly valve, and realizes the posture positioning of the butterfly valve through the positioning piece, and finally completes the replacement of the butterfly valve. During this process, the flue pipe is used normally, and the replacement of the butterfly valve is simple and convenient, which helps to reduce the maintenance cost of the butterfly valve. 3. When the butterfly valve needs to be replaced, the lifting part drives the changing plate to rise. At this time, the smoke groove on the changing plate gradually staggers with the flue pipe. At the same time, the rising pipe will gradually block the smoke groove, and the changing plate will gradually block the flue pipe. As the changing plate continues to rise, the smoke exchange port on the changing plate will gradually connect with the flue pipe. At this time, the high-temperature flue gas in the flue pipe will flow from the flue pipe at one end of the valve pipe to the flue pipe at the other end along the smoke exchange port, plate groove, connecting smoke pipe, plate groove and smoke exchange port in this order. During this process, the flue pipe can discharge high-temperature flue gas normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of an embodiment of the present application.

[0029] Figure 2 It is a structural diagram used to reflect the positional relationship between the valve tube, outer tube and connecting tube in the embodiment of the present application.

[0030] Figure 3 It is a cross-sectional view used to reflect the positional relationship between the shaft tube, partition and refractory ring in the embodiment of the present application.

[0031] Figure 4 It is an exploded view used to illustrate the positional relationship between the sleeve, outer shell and inner plate in the embodiment of the present application.

[0032] Figure 5 It is a cross-sectional view used to reflect the positional relationship among the rotating motor, the support base, and the lifting motor in the embodiment of the present application.

[0033] Figure 6 It is Figure 3 an enlarged view of part A in

[0034] Figure 7 It is a cross-sectional view used to reflect the positional relationship among the lane-changing plate, the wire winding wheel, and the smoke connecting pipe in the embodiment of the present application.

[0035] Description of reference numerals: 1, bracket; 2, water tank; 3, butterfly valve; 31, valve pipe; 32, refractory ring; 33, shaft pipe; 34, valve plate; 341, shaft sleeve; 342, inner plate; 343, outer shell; 344, fixing screw; 345, fixing nut; 35, medium hole; 4, rotating part; 41, outer pipe; 42, sealing plate; 43, through-medium hole; 44, connecting flange; 45, sealing column; 46, rotating motor; 47, transmission cylinder; 48, encoder; 5, flue pipe; 6, connecting part; 61, connecting pipe; 62, connecting end ring; 63, connecting column; 64, splicing end ring; 65, connecting hole; 66, connecting electric cylinder; 7, medium pipe; 8, water pump; 9, angle plate; 10, angle control disk; 11, angle control cylinder; 12, angle control column; 13, compression spring; 14, fixed angle hole; 15, sliding seat; 16, support base; 17, oil cylinder; 18, positioning part; 181, positioning block; 182, positioning groove; 19, lane-changing assembly; 191, lifting pipe; 192, lane-changing plate; 193, lifting part; 1931, reduction box; 1932, wire winding wheel; 1933, pulling rope; 1934, lifting motor; 194, smoke through groove; p195, smoke connecting pipe; 196, smoke changing port; 197, plate groove; 20, partition board; 21, heat insulation board; 22, cold water cavity; 23, hot water cavity. Detailed implementation manners

[0036] The following further Figures 1 - 7 elaborates on the present application in detail with reference to the attached drawings.

[0037] The embodiment of the present application discloses an aluminum industrial high-temperature flue butterfly valve device for energy recovery.

[0038] Referring to Figure 1 , an aluminum industrial high-temperature flue butterfly valve device for energy recovery includes a bracket 1, a water tank 2, and a butterfly valve 3. A heat insulation board 21 is welded inside the water tank 2, and the heat insulation board 21 divides the water tank 2 into a cold water cavity 22 and a hot water cavity 23.

[0039] Referring to Figure 2 , Figure 3 and Figure 4, the butterfly valve 3 includes a valve pipe 31, a refractory ring 32 is coaxially bonded to the inner side wall of the valve pipe 31. The refractory ring 32 is prefabricated from refractory ceramic materials and is formed by bonding a plurality of prefabricated components together with ceramic glue. A shaft pipe 33 is rotatably connected to the valve pipe 31. The shaft pipe 33 is formed by splicing three pipes through flanges, and the axis of the shaft pipe 33 is perpendicular to the axis of the valve pipe 31.

[0040] Refer to Figure 2 , Figure 3 and Figure 4 , the shaft pipe 33 rotatably penetrates through the refractory ring 32. An internally hollow valve plate 34 is arranged on the shaft pipe 33 and within the ring of the refractory ring 32. The valve plate 34 is used to block the refractory ring 32. A plurality of medium holes 35 communicating with the inside of the valve plate 34 are opened between the inner and outer side walls of the shaft pipe 33. The plurality of medium holes 35 are arranged along the axial direction of the shaft pipe 33. A partition plate 20 is integrally formed inside the shaft pipe 33, and the medium holes 35 are distributed on both sides of the partition plate 20.

[0041] Refer to Figure 3 and Figure 4 , the valve plate 34 includes a shaft sleeve 341, an inner plate 342, and an outer shell 343. The shaft sleeve 341 is coaxially sleeved on the shaft pipe 33. Both the shaft sleeve 341 and the outer shell 343 are made of refractory ceramic materials, and the inner plate 342 is made of stainless steel. The inner plate 342 is welded to the shaft pipe 33. The outer shell 343 is located on both sides of the inner plate 342, and the outer shell 343 is attached to the shaft sleeve 341 with ceramic glue.

[0042] Refer to Figure 3 and Figure 4 , there is a gap between the inner plate 342 and the outer shell 343. The splicing joint between the two outer shells 343 is coated with ceramic glue. A fixing screw 344 is welded to the inner plate 342. The fixing screw 344 passes through the outer shell 343, and ceramic glue is also applied between the outer shell 343 and the fixing screw 344. A fixing nut 345 is threadedly connected to the fixing screw 344 on the side of the outer shell 343 facing away from the inner plate 342.

[0043] Refer to Figure 1 , Figure 2 and Figure 3 , a rotating member 4 for driving the shaft pipe 33 to rotate is arranged on the bracket 1. The rotating member 4 includes outer pipes 41 welded to the outer side wall of the valve pipe 31 and located at both ends of the shaft pipe 33. A sealing plate 42 is welded to one end of the outer pipe 41 facing away from the valve pipe 31. The shaft pipe 33 rotatably penetrates through the sealing plate 42. A through-hole 43 is opened between the inner and outer side walls of the shaft pipe 33 within the outer pipe 41. A medium pipe 7 is connected between one outer pipe 41 and the cold water chamber 22 of the water tank 2, and between the other outer pipe 41 and the hot water chamber 23 of the water tank 2.

[0044] Refer to Figure 2 , Figure 3 andFigure 5 A water pump 8 electrically connected to the control system is arranged on the medium pipe 7 connected to the cold water chamber 22 of the water tank 2. The medium pipe 7 is connected to the outer pipe 41 through a connecting flange 44. A sealing column 45 is coaxially welded to the end of the shaft tube 33. A rotating motor 46 electrically connected to the control system is bolted to the bracket 1. A transmission cylinder 47 is coaxially welded to one of the sealing columns 45, and the transmission cylinder 47 is slidably sleeved on the output shaft of the rotating motor 46.

[0045] Reference Figure 3 and Figure 5 The cross-section of the inner ring of the transmission cylinder 47 and the cross-section of the output shaft end of the rotating motor 46 are both polygonal. The outer tube 41 of the shaft tube 33 facing away from the rotating motor 46 is bolted with an encoder 48 electrically connected to the control system. The outer tube 41 close to the end of the rotating motor 46 is bolted with an angle plate 9, and an angle control disk 10 is coaxially welded on the transmission cylinder 47.

[0046] Reference Figure 3 and Figure 6 An angle control cylinder 11 is threadedly connected to the angle control disk 10. The interior of the angle control cylinder 11 is hollow and open at one end toward the angle plate 9. An angle control column 12 is coaxially slidably connected to the angle control cylinder 11. A compression spring 13 is supported between the angle control column 12 and the closed end of the angle control cylinder 11. A plurality of fixed angle holes 14 are circumferentially opened on the angle plate 9 along the axis of the transmission cylinder 47. The end of the angle control column 12 is rounded, and the angle control column 12 is used to abut and slide with the fixed angle hole 14.

[0047] When the angle of the shaft tube 33 needs to be changed, the control system starts the rotating motor 46. The output shaft of the rotating motor 46 drives the shaft tube 33 to rotate through the transmission cylinder 47 and the sealing column 45. The shaft tube 33 drives the outer shell 343 to rotate synchronously through the inner plate 342. During this process, the encoder 48 constantly feeds back the rotation angle of the shaft tube 33 until the designed angle is reached, at which time the rotating motor 46 stops working.

[0048] During this process, the transmission cylinder 47 drives the angle control disk 10 to rotate, and the angle control disk 10 drives the angle control cylinder 11 and the angle control column 12 to rotate synchronously. The compression spring 13 deforms, causing the end round head of the angle control column 12 to slide out of the fixed angle hole 14 from the fixed angle hole 14 until the shaft tube 33 rotates to a specified angle, at which time the end round head of the angle control column 12 abuts against the fixed angle hole 14.

[0049] Reference Figure 1 、 Figure 2 and Figure 3, flue pipes 5 are arranged at both ends of the valve pipe 31. The flue pipes 5 are welded to the bracket 1 and communicate with the hot water chamber 23 of the water tank 2. The medium pipe 7 that communicates with the hot water chamber 23 of the water tank 2 is wound around the flue pipe 5. A connecting piece 6 for connection is arranged between the end of the valve pipe 31 and the flue pipe 5. The connecting piece 6 includes a connecting pipe 61 coaxially and slidably sleeved on the end of the valve pipe 31, and a connecting end ring 62 is coaxially welded on the connecting pipe 61.

[0050] Refer to Figure 2 and Figure 3 , a plurality of connecting columns 63 are circumferentially and evenly welded on the connecting end ring 62 along its axis. A splicing end ring 64 is coaxially welded to the end of the flue pipe 5. A plurality of connecting holes 65 for inserting the connecting columns 63 are formed in the splicing end ring 64. The connecting columns 63 and the connecting holes 65 correspond one by one. A connecting electric cylinder 66 electrically connected to the control system is bolted on the valve pipe 31, and the connecting pipe 61 is welded to the piston rod of the connecting electric cylinder 66.

[0051] When the control system starts the water pump 8, the water pump 8 pumps the water in the cold water chamber 22 of the water tank 2 into the outer pipe 41 at one end of the shaft pipe 33 through the medium pipe 7. The water in the outer pipe 41 flows into the shaft pipe 33 through the through-hole 43. Under the action of the partition plate 20, the water in the shaft pipe 33 flows into the outer shell 343 through the medium hole 35, then flows back into the shaft pipe 33 through the medium hole 35 in the outer shell 343, and then flows to another outer pipe 41 through the through-hole 43, and finally flows to the hot water chamber 23 of the water tank 2 through the medium pipe 7.

[0052] The high-temperature flue gas flowing in the flue pipe 5 will cause the temperature of the outer shell 343 to rise. The water will transfer the temperature on the outer shell 343 during the flowing process in the outer shell 343, so as to reduce the continuous rise of the temperature on the outer shell 343. And the temperatures of the shaft pipe 33 and the inner plate 342 are always close to the temperature of the water in the outer shell 343. The thermal expansion amplitudes of the shaft pipe 33 and the inner plate 342 are not large. Therefore, the shaft sleeve 341 and the outer shell 343 will not be cracked, thereby improving the service life of the shaft sleeve 341 and the outer shell 343.

[0053] Refer to Figure 1 , Figure 5 and Figure 7 , a sliding seat 15 is welded on the bracket 1. A support seat 16 is horizontally slidably arranged on the sliding seat 15. An oil cylinder 17 electrically connected to the control system is bolted on the bracket 1. The support seat 16 is bolted to the piston rod of the oil cylinder 17. The cross-section of the support seat 16 is C-shaped. The valve pipe 31 is arranged on the C-shaped concave side of the support seat 16. A positioning member 18 for positioning is arranged between the support seat 16 and the valve pipe 31.

[0054] Refer to Figure 5The positioning member 18 includes a positioning block 181 welded to the outer wall of the valve tube 31 and located on both sides of the axial direction of the valve tube 31. The support seat 16 is provided with positioning grooves 182 on both sides along the axial direction of the valve tube 31. The positioning block 181 corresponds to the positioning groove 182 one by one, and the positioning block 181 is inserted into the positioning groove 182.

[0055] Reference Figure 5 and Figure 7 A channel changing assembly 19 is arranged on the bracket 1. The channel changing assembly 19 is used to block the two ends of the valve pipe 31 and connect the flue pipe 5 at both ends of the valve pipe 31. The channel changing assembly 19 includes a rising pipe 191 welded to the flue pipe 5. The cross-section of the rising pipe 191 is square. The rising pipe 191 is symmetrically arranged at both ends of the valve pipe 31. The rising pipe 191 is connected to the flue pipe 5. A channel changing plate 192 is vertically slidably arranged in the rising pipe 191.

[0056] Reference Figure 7 , smoke passage grooves 194 are opened on both sides of the channel changing plate 192 along the axial direction of the flue pipe 5, and the smoke passage grooves 194 are used to communicate with the flue pipe 5. A smoke connecting pipe 195 is welded between the two channel changing plates 192, and a smoke exchange port 196 is opened on the side of the channel changing plate 192 facing away from the valve pipe 31. The smoke exchange port 196 is located below the smoke passage groove 194, and a plate groove 197 is opened between the smoke exchange port 196 of the channel changing plate 192 and the smoke connecting pipe 195. A lifting member 193 for driving the channel changing plate 192 to slide vertically is arranged on the bracket 1.

[0057] Reference Figure 5 and Figure 7 The lifting member 193 includes a reduction gearbox 1931 bolted to the bracket 1, a winding wheel 1932 is arranged at the output end of the reduction gearbox 1931, a pull rope 1933 is wound on the winding wheel 1932, and the pull rope 1933 can be made of steel wire. The end of the pull rope 1933 facing away from the winding wheel 1932 is tied to the smoke pipe 195, and a lifting motor 1934 electrically connected to the control system is bolted to the bracket 1, and the output shaft of the lifting motor 1934 is connected to the input end of the reduction gearbox 1931.

[0058] When the butterfly valve 3 needs to be replaced, the control system starts the lifting motor 1934. The output shaft of the lifting motor 1934 drives the winding wheel 1932 to rotate forward through the reduction gear box 1931. The winding wheel 1932 reels the pull rope 1933. The pull rope 1933 pulls the smoke connecting pipe 195 to rise. The smoke connecting pipe 195 drives the channel changing plate 192 to rise. As the channel changing plate 192 rises, the smoke duct 194 on the channel changing plate 192 gradually staggers with the flue pipe 5. At this time, the rising pipe 191 will gradually block the smoke duct 194.

[0059] The ascending lane-changing plate 192 will gradually block the flue duct 5. As the lane-changing plate 192 continues to rise, the smoke-changing port 196 on the lane-changing plate 192 will gradually communicate with the flue duct 5. At this time, the high-temperature flue gas in the flue duct 5 will flow from the flue duct 5 at one end of the valve pipe 31 to the flue duct 5 at the other end in the order of the smoke-changing port 196, the plate groove 197, the smoke-connecting pipe 195, the plate groove 197, and the smoke-changing port 196 until the lifting motor 1934 stops working. At this time, the smoke-changing port 196 is completely communicated with the flue duct 5.

[0060] The control system starts the connecting electric cylinder 66. The piston rod of the connecting electric cylinder 66 contracts, and the piston rod of the connecting electric cylinder 66 drives the connecting pipe 61 to slide. The connecting end ring 62 drives the connecting column 63 thereon to gradually separate from the connecting hole 65 on the splicing end ring 64 until the connecting electric cylinder 66 stops working. At this time, the connecting column 63 is completely separated from the connecting hole 65. Then, the worker removes the medium pipe 7 through the connecting flange 44.

[0061] Then the control system starts the oil cylinder 17. The piston rod of the oil cylinder 17 pushes the support seat 16 to slide, and the support seat 16 drives the valve pipe 31 to slide synchronously. The transmission cylinder 47 on the valve pipe 31 gradually separates from the output shaft of the rotating motor 46. Then the worker transfers the old butterfly valve 3 through the hoisting equipment. At this time, the old butterfly valve 3 has a high temperature. After that, the worker hoists a new butterfly valve 3 onto the support seat 16 again through the hoisting equipment and realizes the attitude positioning of the butterfly valve 3 through the positioning block 181 and the positioning groove 182. Then reverse the above process to complete the replacement of the butterfly valve 3.

[0062] The implementation principle of the aluminum industrial high-temperature flue butterfly valve device for energy recovery in the embodiment of the present application is: when it is necessary to change the angle of the shaft tube 33, the control system starts the rotating motor 46. The output shaft of the rotating motor 46 drives the shaft tube 33 to rotate through the transmission cylinder 47 and the sealing column 45. The shaft tube 33 drives the outer shell 343 to rotate synchronously through the inner plate 342. During this process, the encoder 48 continuously feeds back the rotation angle of the shaft tube 33 until the designed angle is reached. At this time, the rotating motor 46 stops working.

[0063] During this process, the transmission cylinder 47 drives the angle control disc 10 to rotate. When the angle control disc 10 drives the angle control cylinder 11 and the angle control column 12 to rotate synchronously, the compression spring 13 deforms, so that the end round head of the angle control column 12 slides out of the fixed angle hole 14 to the outside of the fixed angle hole 14 until the shaft tube 33 rotates to the specified angle. At this time, the end round head of the angle control column 12 abuts against the fixed angle hole 14.

[0064] The control system starts the water pump 8, which pumps the water in the cold water chamber 22 of the water tank 2 into the outer tube 41 at one end of the shaft tube 33 through the dielectric tube 7. The water in the outer tube 41 flows into the shaft tube 33 through the mass hole 43. Under the action of the partition 20, the water in the shaft tube 33 flows into the outer shell 343 through the dielectric hole 35, and then flows from the outer shell 343 through the dielectric hole 35 back into the shaft tube 33, and then flows into the other outer tube 41 through the mass hole 43, and finally flows into the hot water chamber 23 of the water tank 2 through the dielectric tube 7.

[0065] The high-temperature flue gas flowing in the flue pipe 5 will cause the temperature of the outer shell 343 to rise. The water will transfer the temperature of the outer shell 343 when flowing in the outer shell 343, thereby reducing the continuous rise in the temperature of the outer shell 343. The temperature of the shaft tube 33 and the inner plate 342 is always close to the temperature of the water in the outer shell 343. The thermal expansion of the shaft tube 33 and the inner plate 342 is not large, so the shaft sleeve 341 and the outer shell 343 will not be cracked, thereby improving the service life of the shaft sleeve 341 and the outer shell 343.

[0066] When the butterfly valve 3 needs to be replaced, the control system starts the lifting motor 1934. The output shaft of the lifting motor 1934 drives the winding wheel 1932 to rotate forward through the reduction gear box 1931. The winding wheel 1932 reels the pull rope 1933. The pull rope 1933 pulls the smoke connecting pipe 195 to rise. The smoke connecting pipe 195 drives the channel changing plate 192 to rise. As the channel changing plate 192 rises, the smoke duct 194 on the channel changing plate 192 gradually staggers with the flue pipe 5. At this time, the rising pipe 191 will gradually block the smoke duct 194.

[0067] The rising channel changing plate 192 will gradually block the flue pipe 5. As the channel changing plate 192 continues to rise, the smoke changing port 196 on the channel changing plate 192 will gradually connect with the flue pipe 5. At this time, the high-temperature flue gas in the flue pipe 5 will follow the order of the smoke changing port 196, the plate groove 197, the smoke connecting pipe 195, the plate groove 197 and the smoke changing port 196, and flow from the flue pipe 5 at one end of the valve pipe 31 to the flue pipe 5 at the other end until the lifting motor 1934 stops working. At this time, the smoke changing port 196 is completely connected with the flue pipe 5.

[0068] The control system starts the connecting electric cylinder 66, the piston rod of the connecting electric cylinder 66 contracts, and the piston rod of the connecting electric cylinder 66 drives the connecting pipe 61 to slide. The connecting end ring 62 drives the connecting column 63 on it to gradually separate from the connecting hole 65 on the splicing end ring 64 until the connecting electric cylinder 66 stops working. At this time, the connecting column 63 is completely separated from the connecting hole 65. Then, the worker removes the medium pipe 7 through the connecting flange 44.

[0069] Then the control system starts the oil cylinder 17, and the piston rod of the oil cylinder 17 pushes the support seat 16 to slide. The support seat 16 drives the valve pipe 31 to slide synchronously. The transmission cylinder 47 on the valve pipe 31 gradually separates from the output shaft of the rotating motor 46. Then the worker transfers the old butterfly valve 3 through the hoisting equipment. At this time, the temperature of the old butterfly valve 3 is relatively high. After that, the worker hoists the new butterfly valve 3 onto the support seat 16 again through the hoisting equipment, and realizes the attitude positioning of the butterfly valve 3 through the positioning block 181 and the positioning groove 182. Then reverse the above process. In this way, the replacement of the butterfly valve 3 is completed.

[0070] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An aluminum industry high-temperature flue butterfly valve device for energy recovery, characterized in that: It includes a bracket (1), a water tank (2) and a butterfly valve (3). The butterfly valve (3) includes a valve pipe (31). A refractory ring (32) is coaxially arranged on the inner side wall of the valve pipe (31). A shaft pipe (33) is rotatably arranged on the valve pipe (31). The axis of the shaft pipe (33) is perpendicular to the axis of the valve pipe (31). The shaft pipe (33) rotatably penetrates through the refractory ring (32). An internally hollow valve plate (34) is arranged on the shaft pipe (33) and inside the ring of the refractory ring (32). The valve plate (34) is used to block the refractory ring (32). A plurality of medium holes (35) communicating with the inside of the valve plate (34) are opened between the inner and outer side walls of the shaft pipe (33). The plurality of medium holes (35) are arranged along the axial direction of the shaft pipe (33). A rotating member (4) for driving the shaft pipe (33) to rotate is arranged on the bracket (1). Flue pipes (5) are arranged at both ends of the valve pipe (31). A connecting member (6) for connection is arranged between the end of the valve pipe (31) and the flue pipe (5). The flue pipe (5) is arranged on the bracket (1). Medium pipes (7) are connected between both ends of the shaft pipe (33) and the water tank (2). A water pump (8) electrically connected to the control system is arranged on the medium pipe (7) at one end of the shaft pipe (33).

2. The aluminum industrial high-temperature flue butterfly valve device for energy recovery according to claim 1, characterized in that: The valve plate (34) includes a shaft sleeve (341), an inner plate (342) and an outer shell (343). The shaft sleeve (341) is coaxially sleeved on the shaft pipe (33). Both the shaft sleeve (341) and the outer shell (343) are made of refractory ceramic materials. The inner plate (342) is arranged on the shaft pipe (33). The outer shell (343) is located on both sides of the inner plate (342). The outer shell (343) is arranged on the shaft sleeve (341). There is a spacing between the inner plate (342) and the outer shell (343). Fixing screws (344) are arranged on the inner plate (342). The fixing screws (344) pass through the outer shell (343). Fixing nuts (345) are threadedly connected to the fixing screws (344) on the side of the outer shell (343) facing away from the inner plate (342).

3. The aluminum industrial high-temperature flue butterfly valve device for energy recovery according to claim 1, characterized in that: The rotating member (4) includes outer tubes (41) disposed on the valve tube (31) and at both ends of the shaft tube (33). One end of the outer tube (41) facing away from the valve tube (31) is provided with a sealing plate (42). The shaft tube (33) rotates through the sealing plate (42). A through-hole (43) is opened between the inner and outer side walls of the shaft tube (33) within the outer tube (41). A connecting flange (44) is provided between the medium tube (7) and the outer tube (41). A sealing column (45) is coaxially provided at the end of the shaft tube (33). A rotating motor (46) electrically connected to the control system is provided on the bracket (1). A transmission cylinder (47) is coaxially provided on one of the sealing columns (45). The transmission cylinder (47) is slidably sleeved on the output shaft of the rotating motor (46). The cross-section of the inner ring of the transmission cylinder (47) and the cross-section of the end of the output shaft of the rotating motor (46) are both polygonal. An encoder (48) electrically connected to the control system is provided on the outer tube (41) at the end of the shaft tube (33) facing away from the rotating motor (46).

4. The aluminum industrial high-temperature flue butterfly valve device for energy recovery according to claim 3, wherein: An angle plate (9) is provided on the outer tube (41) near the rotating motor (46). A corner control disk (10) is coaxially provided on the transmission cylinder (47). A corner control cylinder (11) is threadedly connected to the corner control disk (10). The interior of the corner control cylinder (11) is hollow and the end facing the angle plate (9) is open. A corner control column (12) is coaxially and slidably provided on the corner control cylinder (11). A compression spring (13) is propped between the corner control column (12) and the closed end of the corner control cylinder (11). A plurality of fixed-angle holes (14) are circumferentially opened on the angle plate (9) along the axis of the transmission cylinder (47). The end of the corner control column (12) is rounded. The corner control column (12) is used to abut and slidably cooperate with the fixed-angle holes (14).

5. The aluminum industrial high-temperature flue butterfly valve device for energy recovery according to claim 3, characterized in that: The connecting member (6) includes a connecting tube (61) coaxially and slidably sleeved on the end of the valve tube (31). A connecting end ring (62) is coaxially provided on the connecting tube (61). A plurality of connecting columns (63) are evenly circumferentially provided on the connecting end ring (62) along its axis. A splicing end ring (64) is coaxially provided at the end of the flue duct (5). A plurality of connecting holes (65) for inserting the connecting columns (63) are opened on the splicing end ring (64). The connecting columns (63) and the connecting holes (65) are in one-to-one correspondence. A connecting electric cylinder (66) electrically connected to the control system is provided on the valve tube (31). The connecting tube (61) is provided on the piston rod of the connecting electric cylinder (66).

6. The aluminum industrial high-temperature flue butterfly valve device for energy recovery according to claim 5, characterized in that: A sliding seat (15) is arranged on the bracket (1), a supporting seat (16) is slidably arranged on the sliding seat (15), an oil cylinder (17) electrically connected to the control system is arranged on the bracket (1), the supporting seat (16) is arranged on the piston rod of the oil cylinder (17), the cross section of the supporting seat (16) is C-shaped, the valve pipe (31) is arranged on the C-shaped concave side of the supporting seat (16), a positioning member (18) for positioning is arranged between the supporting seat (16) and the valve pipe (31), a lane-changing assembly (19) is arranged on the bracket (1), and the lane-changing assembly (19) is used to block both ends of the valve pipe (31) and connect the flue pipes (5) at both ends of the valve pipe (31).

7. The aluminum industrial high-temperature flue butterfly valve device for energy recovery according to claim 6, characterized in that: The positioning member (18) includes positioning blocks (181) arranged on both sides in the axial direction of the valve pipe (31), positioning grooves (182) are formed on both sides of the supporting seat (16) in the axial direction of the valve pipe (31), the positioning blocks (181) correspond to the positioning grooves (182) one by one, and the positioning blocks (181) are inserted into the positioning grooves (182).

8. The aluminum industrial high-temperature flue butterfly valve device for energy recovery according to claim 6, characterized in that: The lane-changing assembly (19) includes riser pipes (191) arranged on the flue pipes (5), the riser pipes (191) are symmetrically arranged at both ends of the valve pipe (31), the riser pipes (191) are communicated with the flue pipes (5), a lane-changing plate (192) is vertically slidably arranged in the riser pipes (191), a lifting member (193) for driving the lane-changing plate (192) to slide vertically is arranged on the bracket (1), through-smoke grooves (194) are formed on both sides of the lane-changing plate (192) along the axial direction of the flue pipe (5), the through-smoke grooves (194) are used to communicate with the flue pipes (5), a connecting smoke pipe (195) is arranged between the two lane-changing plates (192), a smoke-changing port (196) is formed on the side of the lane-changing plate (192) facing away from the valve pipe (31), the smoke-changing port (196) is located below the through-smoke groove (194), and a plate groove (197) is formed between the smoke-changing port (196) of the lane-changing plate (192) and the connecting smoke pipe (195).

9. The aluminum industrial high-temperature flue butterfly valve device for energy recovery according to claim 8, characterized in that: The lifting member (193) includes a reduction gearbox (1931) arranged on the bracket (1), a wire winding wheel (1932) is arranged at the output end of the reduction gearbox (1931), a pulling rope (1933) is wound on the wire winding wheel (1932), one end of the pulling rope (1933) facing away from the wire winding wheel (1932) is arranged on the connecting smoke pipe (195), a lifting motor (1934) electrically connected to the control system is arranged on the bracket (1), and the output shaft of the lifting motor (1934) is connected to the input end of the reduction gearbox (1931).

10. The aluminum industrial high-temperature flue butterfly valve device for energy recovery according to claim 1, characterized in that: A partition plate (20) is arranged in the middle of the shaft pipe (33), and the medium holes (35) are distributed on both sides of the partition plate (20).

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