Flue gas waste heat recycling system of all-hydrogen bell type annealing furnace

Abstract

The invention discloses a full-hydrogen bell-type annealing furnace flue gas waste heat recycling system, which belongs to the field of flue gas waste heat recovery and comprises a workbench. According to the scheme, the filter screen is arranged, impurities in smoke can be blocked and filtered by the filter screen in the process that the smoke passes through the communicating pipe, meanwhile, the smoke impacts an impeller in the process that the smoke passes through the communicating pipe and drives the impeller to rotate, a rotating rod is driven to rotate in the rotating process of the impeller, and then an impacting rod is driven to rotate in the rotating process of the rotating rod; bristles are driven to rotate in the rotating process of an impact rod, then the bristles gradually make contact with impurities on the surface of a filter screen in the rotating process and drive the impurities, and due to the fact that the impurities rotate around a rotating rod, the impurities gradually move towards a first collecting tank under the common action of centrifugal force and gravity; and the flue gas falls into the collecting box through the first collecting tank and the second collecting tank, so that the filter screen is effectively prevented from being blocked to influence the normal passing of the flue gas through the filter screen, and the effect of ensuring the normal passing of the flue gas through the filter screen is achieved.

Description

Technical Field

[0001] The invention relates to the field of flue gas waste heat recovery, and more specifically to a flue gas waste heat recovery and utilization system of a full hydrogen hood-type annealing furnace. Background Art

[0002] The flue gas waste heat recovery and utilization device of the full hydrogen bell-type annealing furnace is a device that can effectively utilize the waste heat of the high-temperature flue gas in the furnace. Its working principle is to recover the waste heat by passing the furnace smoke through the flue gas waste heat recovery device, and transfer the waste heat to the material or other media to achieve effective utilization of energy. This device usually consists of the following main parts: flue gas waste heat recovery device, waste heat circulation system, and control system.

[0003] In existing recycling devices, materials generally need to be pickled, cleaned, dried, etc. before annealing. These processes all require steam or hot water for heating. These steam and hot water also need to be supplied from outside, resulting in high costs.

[0004] The Chinese patent with authorization announcement number: CN203625446U discloses a flue gas waste heat recovery and utilization system for a full hydrogen hood-type annealing furnace, including an original flue gas duct and a chimney. One end of the original flue gas duct is connected to the flue gas outlet of the hood-type annealing furnace, and the other end is connected to the chimney. The system also includes a bypass flue gas, an evaporator, an economizer, a fan, and a boiler drum. A gate valve is installed on the original flue gas duct. The bypass flue gas is connected in parallel on both sides of the gate valve on the original flue gas duct. The evaporator, the economizer and the fan are connected in series in sequence on the bypass flue gas. A flue gas regulating valve is installed in front of the evaporator on the bypass flue gas, and a stop valve is installed behind the fan. The water inlet of the evaporator is connected to the boiler drum through a downcomer, and the water outlet is connected to the boiler drum through a riser. The water inlet of the economizer is connected to the boiler feed water pipe, and the water outlet is connected to the boiler drum through the water outlet pipe. This saves gas and recovers waste heat from flue gas, thereby realizing energy conservation and emission reduction for the enterprise, being beneficial to environmental protection, reducing the operating costs of the enterprise, and achieving good economic and social benefits.

[0005] Although the above patent can save energy and reduce emissions to a certain extent, it still has certain limitations. The above device is indeed a filtering device, and the annealing furnace flue gas contains a large amount of impurities. If the impurities in the flue gas cannot be cleaned in time, it is easy to cause serious air pollution. Summary of the invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a flue gas waste heat recovery and utilization system for a full hydrogen hood annealing furnace, which can achieve the purpose of cleaning impurities in the flue gas and also improve the utilization effect of the flue gas waste heat.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A full hydrogen bell-type annealing furnace flue gas waste heat recovery and utilization system comprises a workbench, an annealing furnace is fixedly mounted on the top wall of the workbench, a boiler is also fixedly mounted on the top wall of the workbench, a connecting pipe connected to the boiler is inserted on the annealing furnace, and an exhaust pipe connected to the outside is inserted on the top wall of the boiler;

[0009] The filter device comprises a mounting ring fixedly mounted on the inner wall of a connecting pipe, a filter screen is arranged on the mounting ring, and a linkage mechanism cooperating with the filter screen is arranged on the connecting pipe.

[0010] Furthermore, the linkage mechanism includes a mounting frame fixedly mounted on the connecting pipe, a rotating rod rotatably mounted on the mounting frame, an impeller fixedly mounted on the rotating rod, an impact rod fixedly mounted on the rotating rod, and bristles evenly fixedly mounted on the side wall of the impact rod close to the filter screen.

[0011] Furthermore, a spring is fixedly mounted on the mounting ring, and the side of the spring away from the mounting ring is fixedly connected to the filter screen, a collision block is fixedly mounted on the side wall of the filter screen away from the spring, and the side wall of the collision block away from the filter screen is an inclined surface.

[0012] Furthermore, a first collecting tank is provided on the connecting pipe, a second collecting tank is provided on the workbench, and the first collecting tank is connected with the second collecting tank, and a collecting box connected with the first collecting tank is detachably mounted on the second collecting tank.

[0013] Furthermore, a telescopic tube is fixedly installed between the mounting ring and the filter screen, a cavity is opened on the telescopic tube, and the spring is located in the cavity.

[0014] Furthermore, a striking plate cooperating with the bristles is fixedly mounted on the side wall of the filter screen located on one side of the impact block, and a vertical groove is provided on the striking plate.

[0015] Furthermore, an annular plate rotatably matched with the rotating rod is embedded on the filter screen, and a first annular groove is provided on the annular plate, a second annular groove connected with the first annular groove is provided on the rotating rod, and a first air pipe connected with the vertical groove is inserted into the second annular groove, and an air supply mechanism cooperating with the second annular groove is provided on the mounting ring.

[0016] Furthermore, the air supply mechanism includes an intake valve inserted on the side wall of the mounting ring close to the spring, and the input end of the intake valve is connected to the outside, the output end of the intake valve is connected to the cavity, and the side wall of the filter close to the spring is fixedly equipped with an exhaust valve whose input end is connected to the cavity.

[0017] Furthermore, a plurality of belt grooves are provided on the rotating rod, a belt pulley is provided on the workbench, and a memory alloy wire is installed between the belt pulley and the belt grooves for co-rotation.

[0018] Furthermore, a mounting plate is evenly fixedly mounted on the top wall of the workbench, a generator is fixedly mounted on the side wall of the mounting plate, and a rotating shaft of the generator is fixedly connected to a belt pulley.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) In this scheme, a filter is set up. When the smoke passes through the connecting pipe, the filter can block and filter impurities in the smoke. At the same time, when the smoke passes through the connecting pipe, it will hit the impeller and drive the impeller to rotate. When the impeller rotates, it drives the rotating rod to rotate. When the rotating rod rotates, it drives the impact rod to rotate. When the impact rod rotates, it drives the bristles to rotate. Then, when the bristles rotate, they gradually contact the impurities on the surface of the filter and drive the impurities. As the impurities rotate around the rotating rod, the impurities gradually move to the first collection tank under the combined action of centrifugal force and gravity, and fall into the collection box through the first collection tank and the second collection tank, thereby effectively preventing the filter from being blocked and affecting the normal passage of smoke through the filter, thereby ensuring the normal passage of smoke through the filter.

[0021] (2) This scheme sets a spring so that the impact rod gradually contacts the inclined surface of the impact block during the rotation process and applies a thrust to the inclined surface of the impact block. Then, the thrust can be decomposed into a direction perpendicular to the inclined surface and a direction perpendicular to the filter. Then, under the action of the thrust perpendicular to the filter, the impact block drives the filter to move in the horizontal direction. At this time, the spring is compressed and has a tendency to recover. When the impact rod is out of contact with the impact block, the spring stretches and drives the filter to reset, that is, the filter is driven to shake back and forth during the rotation of the impact rod. Then, during the shaking process of the filter, the impurities on the gap of the filter can be driven to shake. During the shaking process of the impurities, the gap of the filter gradually loses contact, which makes it easier for the bristles to clean the impurities, thereby improving the cleaning effect.

[0022] (3) This solution provides a telescopic tube, which drives the telescopic tube to vibrate during the vibration of the filter screen. At the same time, the spring can be isolated from the outside world during the vibration of the telescopic tube, thereby effectively preventing the spring from rusting and corroding, thereby extending the service life of the spring;

[0023] (4) This solution sets a striking plate. When the bristles are cleaning the filter, impurities will adhere to the surface of the bristles. When the bristles rotate, they gradually contact the side wall of the striking plate and strike the side wall of the plate. Then, under the action of inertia, the impurities on the surface of the bristles gradually break away from the bristles and enter the vertical groove, thereby effectively preventing excessive impurities on the surface of the bristles from adhering to the surface of the filter again. When the telescopic tube is extended, the cavity inhales air from the outside through the air inlet valve. Then, when the telescopic tube is compressed, the gas in the cavity flows into the first annular groove through the exhaust valve, then flows into the second annular groove through the first annular groove, and is blown into the vertical groove through the second annular groove and the first air pipe. Then, under the action of airflow and gravity, the impurities fall downward into the collection box, thereby improving the cleaning effect.

[0024] (5) This scheme arranges a memory alloy wire, which heats the memory alloy wire near the belt groove when the flue gas passes through the connecting pipe. The memory alloy wire near the belt groove is then stretched by the heat. Then, the memory alloy wire begins to rotate under the combined restraining force of the belt pulley and the belt groove. When the memory alloy wire moves outside the connecting pipe, the memory alloy wire gradually contracts again due to the cooling. That is, the memory alloy wire is driven to rotate when the flue gas passes through it. The memory alloy wire can drive the rotating rod during the rotation process, thereby ensuring the normal rotation of the rotating rod. At the same time, the memory alloy wire drives the belt pulley to rotate during the rotation process, and the generator is driven to rotate during the rotation process. Then, electricity is generated during the rotation process of the generator, thereby improving the effect of utilizing the waste heat of the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a combined diagram of the connecting pipe, filter screen, collecting box, rotating rod, and impact rod impeller of the present invention;

[0027] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0029] Figure 5 It is a combined diagram of the filter screen, the rotating rod and the annular plate of the present invention;

[0030] Figure 6 It is a combined diagram of the telescopic tube and the spring of the present invention;

[0031] Figure 7 It is a combination diagram of the filter screen and the impact block of the present invention;

[0032] Figure 8 It is a combination diagram of the memory alloy wire, belt pulley and belt groove of the present invention;

[0033] Fig. 9 It is a bottom view of the present invention.

[0034] Description of the numbers in the figure:

[0035] 1. Workbench; 2. Annealing furnace; 3. Boiler; 4. Connecting pipe; 5. Exhaust pipe; 6. Mounting ring; 7. Filter; 8. Mounting frame; 9. Rotating rod; 10. Impeller; 11. Impact rod; 12. Impact block; 13. Brush; 14. Spring; 15. First collecting trough; 16. Second collecting trough; 17. Collecting box; 18. Telescopic tube; 19. Beating plate; 20. Vertical groove; 21. Annular plate; 22. First annular groove; 23. Second annular groove; 24. First air pipe; 25. Inlet valve; 26. Exhaust valve; 27. Belt groove; 28. Belt pulley; 29. ​​Memory alloy wire; 30. Mounting plate; 31. Generator. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 9 A full hydrogen bell-type annealing furnace flue gas waste heat recovery and utilization system comprises a workbench 1, an annealing furnace 2 is fixedly mounted on the top wall of the workbench 1, a boiler 3 is also fixedly mounted on the top wall of the workbench 1, and a connecting pipe 4 connected to the boiler 3 is inserted on the annealing furnace 2, and an exhaust pipe 5 connected to the outside is inserted on the top wall of the boiler 3;

[0038] The filtering device comprises a mounting ring 6 fixedly mounted on the inner wall of the connecting pipe 4 , a filter screen 7 is arranged on the mounting ring 6 , and a linkage mechanism cooperating with the filter screen 7 is arranged on the connecting pipe 4 .

[0039] The linkage mechanism includes a mounting frame 8 fixedly mounted on the connecting pipe 4, a rotating rod 9 is rotatably mounted on the mounting frame 8, an impeller 10 is fixedly mounted on the rotating rod 9, an impact rod 11 is fixedly mounted on the rotating rod 9, and bristles 13 are evenly fixedly mounted on the side wall of the impact rod 11 close to the filter screen 7.

[0040] A spring 14 is fixedly mounted on the mounting ring 6, and the side of the spring 14 away from the mounting ring 6 is fixedly connected to the filter 7, and an impact block 12 is fixedly mounted on the side wall of the filter 7 away from the spring 14, and the side wall of the impact block 12 away from the filter 7 is an inclined surface.

[0041] The connecting pipe 4 is provided with a first collecting tank 15 , the workbench 1 is provided with a second collecting tank 16 , and the first collecting tank 15 is connected to the second collecting tank 16 , and a collecting box 17 connected to the first collecting tank 15 is detachably mounted on the second collecting tank 16 .

[0042] When in use, the flue gas in the annealing furnace 2 flows to the boiler 3 through the connecting pipe 4, and heats the water in the boiler 3, thereby achieving the purpose of recycling the waste heat in the flue gas; then the recycled flue gas flows to the outside through the exhaust pipe 5, thereby effectively preventing the occurrence of greenhouse effect due to excessive heat in the flue gas, and playing a role in protecting the environment.

[0043] In the process of smoke passing through the connecting pipe 4, the filter 7 can block and filter impurities in the smoke, thereby effectively preventing impurities from flowing into the air with the smoke and causing air pollution. At the same time, in the process of smoke passing through the connecting pipe 4, it will hit the impeller 10 and drive the impeller 10 to rotate. In the process of rotation of the impeller 10, it drives the rotating rod 9 to rotate, and then drives the impact rod 11 to rotate in the process of rotation of the rotating rod 9. In the process of rotation of the impact rod 11, it drives the bristles 13 to rotate, and then in the process of rotation of the bristles 13, it gradually contacts the impurities on the surface of the filter 7 and drives the impurities. Since the impurities rotate around the rotating rod 9, the impurities gradually move to the first collecting groove 15 under the combined action of centrifugal force and gravity, and fall into the collection box 17 through the first collecting groove 15 and the second collecting groove 16, thereby effectively preventing the filter 7 from being blocked and affecting the normal passage of smoke through the filter 7, thereby ensuring the normal passage of smoke through the filter 7.

[0044] In the initial state, the spring 14 is in a free extension state. During the rotation of the impact rod 11, it gradually contacts the inclined surface of the impact block 12 and applies a thrust to the inclined surface of the impact block 12. Then, the thrust can be decomposed into a direction perpendicular to the inclined surface and a direction perpendicular to the filter 7. Then, under the action of the thrust perpendicular to the direction of the filter 7, the impact block 12 drives the filter 7 to move in the horizontal direction. At this time, the spring 14 is compressed and has a tendency to recover. When the impact rod 11 is out of contact with the impact block 12, the spring 14 extends and drives the filter 7 to reset, that is, during the rotation of the impact rod 11, the filter 7 is driven to shake back and forth. Then, during the shaking of the filter 7, the impurities on the gap of the filter 7 can be driven to shake. During the shaking of the impurities, the gap of the filter 7 gradually loses contact, which makes it easier for the bristles 13 to clean the impurities, thereby improving the cleaning effect.

[0045] like Figure 6 As shown, a telescopic tube 18 is fixedly installed between the mounting ring 6 and the filter screen 7 , a cavity is opened on the telescopic tube 18 , and the spring 14 is located in the cavity.

[0046] By adopting the above technical solution, since the flue gas contains moisture and impurities, the telescopic tube 18 is set, and the telescopic tube 18 is driven to shake during the shaking of the filter 7. At the same time, the spring 14 can be isolated from the outside world during the shaking of the telescopic tube 18, thereby effectively preventing the spring 14 from rusting and being corroded, thereby extending the service life of the spring 14.

[0047] like Figure 2 , Figure 3 , Figure 4 As shown, a striking plate 19 cooperating with the bristles 13 is fixedly mounted on the side wall of the filter screen 7 located on one side of the impact block 12, and a vertical groove 20 is opened on the striking plate 19.

[0048] The filter screen 7 is embedded with an annular plate 21 which rotates with the rotating rod 9, and the annular plate 21 is provided with a first annular groove 22, the rotating rod 9 is provided with a second annular groove 23 which is connected with the first annular groove 22, and the second annular groove 23 is inserted with a first air pipe 24 which is connected with the vertical groove 20, and the mounting ring 6 is provided with an air supply mechanism which cooperates with the second annular groove 23.

[0049] The air supply mechanism includes an intake valve 25 inserted on the side wall of the mounting ring 6 close to the spring 14, and the input end of the intake valve 25 is connected to the outside, the output end of the intake valve 25 is connected to the cavity, and the side wall of the filter 7 close to the spring 14 is fixedly equipped with an exhaust valve 26 whose input end is connected to the cavity.

[0050] By adopting the above-mentioned technical scheme, impurities will adhere to the surface of the bristles 13 during the process of cleaning the filter 7 with the bristles 13. During the rotation of the bristles 13, the bristles 13 gradually come into contact with the side wall of the striking plate 19 and strike the side wall of the plate 19. Then, under the action of inertia, the impurities on the surface of the bristles 13 gradually break away from the contact with the bristles 13 and enter the vertical groove 20, thereby effectively preventing excessive impurities on the surface of the bristles 13 from attaching to the surface of the filter 7 again, thereby improving the cleaning effect of the filter 7.

[0051] During the extension of the telescopic tube 18, the cavity inhales air from the outside through the air inlet valve 25. Then, when the telescopic tube 18 is compressed, the gas in the cavity flows into the first annular groove 22 through the exhaust valve 26, and then flows into the second annular groove 23 through the first annular groove 22, and is blown into the vertical groove 20 through the second annular groove 23 and the first air pipe 24. Then, under the action of airflow and gravity, the impurities fall downward into the collection box 17, thereby improving the cleaning effect.

[0052] like Figure 2 , Figure 8 , Fig. 9 As shown, a plurality of belt grooves 27 are provided on the rotating rod 9 , a belt pulley 28 is provided on the workbench 1 , and a memory alloy wire 29 is installed between the belt pulley 28 and the belt grooves 27 for co-rotation.

[0053] A mounting plate 30 is evenly and fixedly mounted on the top wall of the workbench 1 , a generator 31 is fixedly mounted on the side wall of the mounting plate 30 , and a rotating shaft of the generator 31 is fixedly connected to the belt pulley 28 .

[0054] By adopting the above technical scheme, in the initial state, the memory alloy wire 29 is in a taut state, and then the rotating rod 9 will drive the memory alloy wire 29 to rotate in the process of the impeller 10 driving the rotating rod 9. At the same time, the memory alloy wire 29 near the belt groove 27 will be heated in the process of the flue gas passing through the connecting pipe 4, and then the memory alloy wire 29 near the belt groove 27 will be stretched by the heat, and then the memory alloy wire 29 starts to rotate under the action of the joint restraining force of the belt pulley 28 and the belt groove 27. When the memory alloy wire 29 moves to the outside of the connecting pipe 4, the memory alloy wire 29 gradually contracts again due to the cold, that is, the memory alloy wire 29 will be driven to rotate in the process of the flue gas passing through the memory alloy wire 29, and the rotating rod 9 can be driven in the process of the memory alloy wire 29 rotating, which plays a role in ensuring the normal rotation of the rotating rod 9, and at the same time, the belt pulley 28 is driven to rotate in the process of the memory alloy wire 29 rotating, and the generator 31 is driven to rotate in the process of the belt pulley 28 rotating, and then the generator 31 will generate electricity in the process of the generator 31 rotating, thereby improving the effect of the flue gas waste heat utilization.

[0055] Method of use: When in use, the flue gas in the annealing furnace 2 flows to the boiler 3 through the connecting pipe 4, and heats the water in the boiler 3, so as to achieve the purpose of recycling the waste heat in the flue gas; then the recycled flue gas flows to the outside through the exhaust pipe 5; in the process of the flue gas passing through the connecting pipe 4, the filter screen 7 can block and filter the impurities in the flue gas, thereby effectively preventing the impurities from flowing into the air with the flue gas and causing air pollution. At the same time, in the process of the flue gas passing through the connecting pipe 4, it will hit the impeller 10 and drive the impeller 10 to rotate, and in the process of the impeller 10 rotating, it will drive the rotating rod 9 to rotate, and then in the process of the rotating rod 9 rotating, it will drive the impact rod 11 to rotate, and in the process of the impact rod 11 rotating The bristles 13 are driven to rotate, and then in the process of the rotation of the bristles 13, they gradually contact with the impurities on the surface of the filter 7 and drive the impurities. Since the impurities rotate around the rotating rod 9, the impurities gradually move to the first collecting groove 15 under the combined action of centrifugal force and gravity, and fall into the collecting box 17 through the first collecting groove 15 and the second collecting groove 16, thereby effectively preventing the filter 7 from being blocked and affecting the normal passage of smoke through the filter 7; in the process of the impact rod 11 rotating, it gradually contacts the inclined surface of the impact block 12, and applies thrust to the inclined surface of the impact block 12, and then the thrust can be decomposed into a direction perpendicular to the inclined surface and perpendicular to the filter 7, and then under the action of the thrust perpendicular to the direction of the filter 7, the impact block 12 drives the filter 7 along the horizontal direction When the impact rod 11 is disengaged from the impact block 12, the spring 14 stretches and drives the filter screen 7 to reset, that is, the filter screen 7 is driven to shake back and forth during the rotation of the impact rod 11, and then the impurities on the gap of the filter screen 7 can be driven to shake during the shaking of the impurities, and the gap of the filter screen 7 gradually loses contact during the shaking of the impurities, so as to facilitate the brush 13 to clean the impurities; by setting the telescopic tube 18, the telescopic tube 18 is driven to shake during the shaking of the filter screen 7, and the spring 14 can be isolated from the outside world during the shaking of the telescopic tube 18, so as to effectively prevent the spring 14 from rusting and being corroded; when the brush 13 cleans the filter screen 7, the spring 14 is stretched and the impact block 12 is disengaged ... During the process, impurities will adhere to the surface of the bristles 13, and gradually contact with the side wall of the striking plate 19 during the rotation of the bristles 13, and strike the side wall of the striking plate 19, and then the impurities on the surface of the bristles 13 gradually break away from the contact with the bristles 13 under the action of inertia, and enter the vertical groove 20; during the extension of the telescopic tube 18, the cavity inhales air from the outside through the air inlet valve 25, and then when the telescopic tube 18 is compressed, the gas in the cavity flows into the first annular groove 22 through the exhaust valve 26, and then flows into the second annular groove 23 through the first annular groove 22, and is blown into the vertical groove 20 through the second annular groove 23 and the first air pipe 24, and then the impurities fall downward into the collection box 17 under the action of airflow and gravity;In the process of the impeller 10 driving the rotating rod 9, the rotating rod 9 will drive the memory alloy wire 29 to rotate. At the same time, the memory alloy wire 29 near the belt groove 27 will be heated in the process of the flue gas passing through the connecting pipe 4, and then the memory alloy wire 29 near the belt groove 27 will be stretched by the heat, and then the memory alloy wire 29 will start to rotate under the joint restraining force of the belt pulley 28 and the belt groove 27. When the memory alloy wire 29 moves outside the connecting pipe 4, the memory alloy wire 29 will gradually shrink again due to the cold, that is, the memory alloy wire 29 will be driven to rotate in the process of the flue gas passing through the memory alloy wire 29, and the rotating rod 9 can be driven in the process of the memory alloy wire 29 rotating, and the belt pulley 28 can be driven to rotate in the process of the memory alloy wire 29 rotating, and the generator 31 can be driven to rotate in the process of the belt pulley 28 rotating, and then the generator 31 will generate electricity in the process of the generator 31 rotating. ;

[0056] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A full hydrogen bell-type annealing furnace flue gas waste heat recovery and utilization system, characterized in that: include: A workbench (1), an annealing furnace (2) is fixedly mounted on the top wall of the workbench (1), a boiler (3) is also fixedly mounted on the top wall of the workbench (1), a connecting pipe (4) connected to the boiler (3) is inserted on the annealing furnace (2), and an exhaust pipe (5) connected to the outside is inserted on the top wall of the boiler (3); The filtering device comprises a mounting ring (6) fixedly mounted on the inner wall of a connecting pipe (4), a filter screen (7) being arranged on the mounting ring (6), and a linkage mechanism cooperating with the filter screen (7) being arranged on the connecting pipe (4).

2. A full hydrogen bell-type annealing furnace flue gas waste heat recovery and utilization system according to claim 1, characterized in that: The linkage mechanism comprises a mounting frame (8) fixedly mounted on the connecting pipe (4), a rotating rod (9) rotatably mounted on the mounting frame (8), an impeller (10) fixedly mounted on the rotating rod (9), an impact rod (11) fixedly mounted on the rotating rod (9), and bristles (13) evenly fixedly mounted on the side wall of the impact rod (11) close to the filter screen (7).

3. A full hydrogen bell-type annealing furnace flue gas waste heat recovery and utilization system according to claim 2, characterized in that: A spring (14) is fixedly mounted on the mounting ring (6), and a side of the spring (14) away from the mounting ring (6) is fixedly connected to the filter screen (7), and a collision block (12) is fixedly mounted on a side wall of the filter screen (7) away from the spring (14), and a side wall of the collision block (12) away from the filter screen (7) is an inclined surface.

4. A full hydrogen bell-type annealing furnace flue gas waste heat recovery and utilization system according to claim 3, characterized in that: The connecting pipe (4) is provided with a first collecting groove (15), the workbench (1) is provided with a second collecting groove (16), and the first collecting groove (15) is connected to the second collecting groove (16), and the second collecting groove (16) is detachably provided with a collecting box (17) connected to the first collecting groove (15).

5. A full hydrogen bell-type annealing furnace flue gas waste heat recovery and utilization system according to claim 4, characterized in that: A telescopic tube (18) is fixedly mounted between the mounting ring (6) and the filter screen (7), a cavity is provided on the telescopic tube (18), and the spring (14) is located in the cavity.

6. A full hydrogen bell-type annealing furnace flue gas waste heat recovery and utilization system according to claim 5, characterized in that: A striking plate (19) cooperating with the bristles (13) is fixedly mounted on the side wall of the filter screen (7) located on one side of the impact block (12), and a vertical groove (20) is provided on the striking plate (19).

7. A full hydrogen bell-type annealing furnace flue gas waste heat recovery and utilization system according to claim 6, characterized in that: The filter screen (7) is embedded with an annular plate (21) that is rotatably matched with the rotating rod (9), and the annular plate (21) is provided with a first annular groove (22), the rotating rod (9) is provided with a second annular groove (23) that is connected with the first annular groove (22), and the second annular groove (23) is inserted with a first air pipe (24) that is connected with the vertical groove (20), and the mounting ring (6) is provided with an air supply mechanism that is matched with the second annular groove (23).

8. The full hydrogen bell-type annealing furnace flue gas waste heat recovery and utilization system according to claim 7 is characterized in that: The air supply mechanism comprises an air intake valve (25) inserted on a side wall of the mounting ring (6) close to the spring (14), wherein an input end of the air intake valve (25) is connected to the outside, and an output end of the air intake valve (25) is connected to the cavity; an exhaust valve (26) whose input end is connected to the cavity is fixedly mounted on the side wall of the filter screen (7) close to the spring (14).

9. A full hydrogen bell-type annealing furnace flue gas waste heat recovery and utilization system according to claim 8, characterized in that: The rotating rod (9) is provided with a plurality of belt grooves (27), the workbench (1) is provided with a belt pulley (28), and a memory alloy wire (29) is installed between the belt pulley (28) and the belt grooves (27) for co-rotation.

10. A full hydrogen bell-type annealing furnace flue gas waste heat recovery and utilization system according to claim 9, characterized in that: A mounting plate (30) is evenly and fixedly mounted on the top wall of the workbench (1), a generator (31) is fixedly mounted on the side wall of the mounting plate (30), and a rotating shaft of the generator (31) is fixedly connected to a belt pulley (28).

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