Energy-saving industrial furnace flue gas waste heat intelligent recovery device

Abstract

The invention discloses an energy-saving industrial furnace flue gas waste heat intelligent recovery device, and particularly relates to the technical field of waste heat recovery, the energy-saving industrial furnace flue gas waste heat intelligent recovery device comprises a box body, a gas inlet pipe is fixedly mounted on one side of the box body, and an exhaust pipe is fixedly mounted on one side of the box body; according to the heat exchange tube surface cleaning device disclosed by the invention, the effect of cleaning the surface of a heat exchange tube is achieved through mutual cooperative use of a screw rod, a box body, a mounting frame, a connecting plate, a positioning column, a second spring, a cleaning roller, a transmission gear and a rack; the effects of cleaning accumulated dust on the surface of the heat exchange pipe and conveniently driving the two cleaning assemblies to use at the same time are achieved, and the effects of collecting and discharging the accumulated dust cleaned out of the surface of the heat exchange pipe are achieved through mutual cooperative use of a dust collecting cover, a box body, a dust discharging box, a second motor, a controller, an auger and a dust discharging pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of waste heat recovery, and particularly relates to an energy-saving intelligent waste heat recovery device for flue gas of industrial furnaces and kilns. Background Art

[0002] Waste heat refers to the sensible heat and latent heat that are not reasonably utilized in the original design of the already-operated industrial energy-consuming devices due to limitations such as history, technology, and concept. It includes high-temperature waste gas heat, cooling medium heat, waste steam and waste water heat, high-temperature product and slag heat, chemical reaction heat, combustible waste gas, waste liquid, and waste heat, etc. Waste heat recovery equipment is applied in various fields. The waste gas heat recovery device extracts the energy of the waste gas discharged from the heat setting machine to heat the inlet temperature of the fresh air required by the heat setting machine, achieving the purpose of reducing the discharge temperature of the waste gas and saving energy for the heat setting machine.

[0003] In the prior art, industrial furnaces and kilns usually discharge flue gas with relatively high heat during use, and the temperature of the flue gas is as high as 160 - 200 °C. If these heats are directly discharged, it will cause significant energy waste. Therefore, it is necessary to recover the waste heat to improve the energy utilization efficiency and reduce the production cost. During the waste heat recovery process, it is necessary for the high-temperature flue gas to come into contact with the heat transfer surface to exchange its residual heat. In this process, there will be particulate matters such as soot in the flue gas. Therefore, during long-term waste heat recovery, the soot and particulate matters in the flue gas will adhere to the heat transfer surface, resulting in a decrease in its heat conduction efficiency and affecting the waste heat recovery effect of the flue gas. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides an energy-saving intelligent waste heat recovery device for flue gas of industrial furnaces and kilns to solve the problems raised in the above background art.

[0005] The above technical object of the present invention is achieved through the following technical solutions:

[0006] An energy-saving intelligent waste heat recovery device for flue gas of industrial furnaces and kilns, including a box body. One side of the box body is fixedly installed with an air inlet pipe, one side of the box body is fixedly installed with an exhaust pipe, one side of the exhaust pipe is fixedly installed with an exhaust fan, one side of the box body is fixedly installed with a controller, the exhaust fan is electrically connected to the controller, and a heat exchange tube is fixedly installed inside the box body;

[0007] Positioning seats are respectively fixedly installed on both sides of the box body. A temperature sensor is fixedly sleeved inside the positioning seat. The temperature sensor is electrically connected to the controller. A sealing pipe is fixedly installed on the bottom surface of the positioning seat. The sealing pipe penetrates and extends into the inside of the exhaust pipe and the water outlet of the heat exchange tube;

[0008] Two cleaning components are arranged inside the box body and are used to clean the heat exchange pipes when ash accumulates on their surfaces;

[0009] A driving component is arranged on one side of the box body and is used to drive the cleaning components for use;

[0010] An ash discharge component is arranged on the bottom surface of the box body and is used to collect and discharge the ash cleaned from the surface of the heat exchange pipes;

[0011] A filtering component is arranged on one side of the exhaust fan and is used to purify and filter the discharged flue gas.

[0012] By adopting the above technical solution, during use, the high-temperature flue gas is drawn into the interior of the box body through the action of an external pipeline and an exhaust fan. At this time, the waste heat in the high-temperature flue gas will undergo heat conversion with the water inside the heat exchange pipes, thereby recovering and utilizing the waste heat in the high-temperature flue gas. During this process, two temperature sensors will detect the temperature of the incoming flue gas and the temperature of the discharged water in real time. Then, when the temperature is lower than the measured value, the controller controls the start of the cleaning components to clean the ash on the surface of the heat exchange pipes. Then, the cleaned dust will be centrally collected and discharged inside the ash discharge component, and the flue gas after waste heat recovery will be filtered through the filtering component to remove the particulate impurities inside and then discharged. In this way, the waste heat in the flue gas is recovered and utilized, and at the same time, it is convenient to intelligently detect the usage status of the heat exchange pipes and improve their waste heat efficiency.

[0013] Preferably, the cleaning components include: two lead screws, both of the lead screws are rotatably connected inside the box body, the two lead screws are arranged at intervals, a mounting frame is threadedly connected to the outer circumferential wall surface of the lead screw, a connecting plate is slidably connected inside the mounting frame, two positioning columns are fixedly installed inside the mounting frame, the positioning columns are slidably connected to the connecting plate, a second spring is movably sleeved on the outer circumferential wall surface of the positioning column, a cleaning roller is rotatably connected to the bottom surface of the connecting plate, transmission gears are fixedly sleeved on the outer circumferential wall surfaces at both ends of the cleaning roller, several racks are fixedly installed inside the box body, every two racks are in a group, the positions of the racks and the transmission gears correspond to each other, and the transmission gears are meshed with the racks.

[0014] By adopting the above technical solution, the staff uses the cleaning components through the driving component, and then the two lead screws will rotate simultaneously. Then, under the threaded driving action of the lead screws and the mounting frame, the mounting frame will move along the direction of the lead screws. During this process, with the meshing transmission of multiple transmission gears and multiple racks, the two cleaning rollers will rotate simultaneously. Then, with the resilience of multiple second springs, the two cleaning rollers will always be in contact with the surface of the heat exchange pipes. Then, the two rotating and contacting cleaning rollers will scrape and clean the ash on the surface of the heat exchange pipes, thereby achieving the effect of cleaning the surface of the heat exchange pipes.

[0015] Preferably, the driving assembly includes: two driven synchronous belt pulleys, both of the two driven synchronous belt pulleys are arranged on one side of the box body, the inner circumferential wall surface of the driven synchronous belt pulley is fixedly sleeved with the lead screw, a first motor is arranged on one side of the box body, the first motor is electrically connected with the controller, the outer circumferential wall surface of the driving shaft of the first motor is fixedly sleeved with a driving synchronous belt pulley, a transmission synchronous belt is arranged between the driving synchronous belt pulley and the driven synchronous belt pulley, and the driving synchronous belt pulley and the driven synchronous belt pulley are connected by belt transmission through the transmission synchronous belt.

[0016] By adopting the above technical solution, when the staff needs to use the cleaning assembly, the staff starts the first motor through the controller. Then, the rotation of the driving shaft of the first motor will drive the driving synchronous belt pulley to rotate. Then, under the belt transmission action of the driving synchronous belt pulley, the transmission synchronous belt and the two driven synchronous belt pulleys, the two lead screws will rotate accordingly, and drive the two groups of cleaning assemblies to move, so as to clean the dust on the surface of the heat exchange tubes, thereby achieving the effect of facilitating the simultaneous driving of the two groups of cleaning assemblies for use.

[0017] Preferably, the dust discharging assembly includes: a dust collecting cover, the dust collecting cover is fixedly installed on the bottom surface of the box body, a dust discharging box is fixedly installed on the bottom surface of the dust collecting cover, a second motor is fixedly installed on one side of the dust discharging box, the second motor is electrically connected with the controller, a screw conveyor is rotatably connected inside the dust discharging box, one end of the driving shaft of the second motor is fixedly installed with the screw conveyor, and a dust discharging pipe is fixedly installed on the bottom surface of the dust discharging box.

[0018] By adopting the above technical solution, when the dust on the surface of the heat exchange tubes is scraped off, the dust on the surface of the heat exchange tubes will enter the inside of the dust discharging box along the inner wall of the dust collecting cover. Then, when the staff needs to clean and discharge the dust inside the dust discharging box, the staff starts the second motor. Then, the rotation of the driving shaft of the second motor will drive the screw conveyor to rotate. Then, the dust inside the dust discharging box will move along the direction of the spiral blades on the surface of the screw conveyor. At this time, the staff can open the dust discharging pipe to discharge the dust inside the dust discharging box, thereby achieving the effect of facilitating the collection and discharge of the dust cleaned from the surface of the heat exchange tubes.

[0019] Preferably, the filtering assembly includes: a threaded sleeve, the threaded sleeve is fixedly installed on one side of the exhaust fan, a mounting pipe is threadedly connected inside the threaded sleeve, a plurality of sliding seats are fixedly installed on the inner circumferential wall surface of the mounting pipe, a limiting cover is arranged inside the sliding seat, the limiting cover is slidably connected with the sliding seat, an air filter element is movably sleeved inside the limiting cover, and a fixing cover is arranged on one side of the limiting cover, and the fixing cover is fixedly installed with the sliding seat through bolts.

[0020] By adopting the above technical solution, after the hot flue gas passes through the surface of the heat exchange tube for waste heat recovery, the flue gas will enter the inside of the threaded sleeve and the limit cover along with the suction force of the exhaust fan. At this time, the air filter element inside the limit cover will filter the particulate impurities contained in the hot gas. Then, when the air filter element is saturated, the staff can remove the exhaust fan and the exhaust pipe, and then the staff can screw out the sliding seat from the inside of the threaded sleeve. At this time, the staff can slide out the fixed cover together with the limit cover from the inside of the sliding seat. Furthermore, the staff can remove a plurality of bolts on one side of the fixed cover to separate the fixed cover from the limit cover and replace the air filter element, thereby achieving the effect of facilitating the filtration of particulate impurities in the hot gas.

[0021] Preferably, a mounting seat is fixedly installed on one side of the box body. A first spring is movably sleeved inside the mounting seat. A connecting column is slidably connected inside the mounting seat. One end of the connecting column is fixedly installed with a mounting sleeve. A pressing wheel is rotatably connected inside the mounting sleeve. The inner circumferential wall surface of the pressing wheel is movably sleeved with the transmission synchronous belt.

[0022] By adopting the above technical solution, the connecting column, the mounting sleeve and the pressing wheel are driven to move by the resilience of the first spring. Then, the pressing wheel will push against the transmission synchronous belt to keep it always in a tensioned state, thereby preventing the transmission synchronous belt from falling off.

[0023] Preferably, a plurality of guide rods are fixedly installed inside the box body. Every two of the guide rods form a group, and the guide rods are slidably connected with the mounting frame.

[0024] By adopting the above technical solution, it is convenient to guide and limit the two mounting frames when they move.

[0025] Preferably, two second protective covers are fixedly installed inside the box body. The positions of the two second protective covers correspond to the positions of the two lead screws. A first protective cover is fixedly installed on one side of the box body. One side of the first motor is fixedly installed with the first protective cover, and the driving shaft of the first motor penetrates through the first protective cover.

[0026] By adopting the above technical solution, it is convenient to protect the two lead screws and the transmission synchronous belt.

[0027] In summary, the present invention mainly has the following beneficial effects:

[0028] 1. By the mutual cooperation of the lead screw, the box body, the mounting frame, the connecting plate, the positioning column, the second spring, the cleaning roller, the transmission gear and the rack, the present invention achieves the effect of cleaning the surface of the heat exchange tube.

[0029] 2. By the combined use of the driven synchronous pulley, the box body, the lead screw, the first motor, the driving synchronous pulley and the transmission synchronous belt, the present invention achieves the effect of cleaning the dust on the surface of the heat exchange tube and facilitating the simultaneous driving of two cleaning components for use.

[0030] 3. By the combined use of the dust collecting hood, the box body, the ash discharging box, the second motor, the controller, the auger and the ash discharging pipe, the present invention achieves the effect of collecting and discharging the dust cleaned from the surface of the heat exchange tube.

[0031] 4. By the combined use of the threaded sleeve, the exhaust fan, the installation pipe, the sliding seat, the limiting cover, the air filter element and the fixing cover, the present invention achieves the effect of replacing the air filter element and facilitating the filtering of particulate impurities in the hot air.

[0032] 5. By the combined use of the installation seat, the first spring, the connecting column, the installation sleeve, the pressing wheel and the transmission synchronous belt, the present invention achieves the effect of keeping the transmission synchronous belt always in a tensioned state, thereby preventing the transmission synchronous belt from falling off.

[0033] 6. By the combined use of the box body, the second protective cover, the lead screw, the first protective cover and the first motor, the present invention achieves the effect of protecting the two lead screws and the transmission synchronous belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0035] Figure 2 is a structural schematic diagram of the box body of the present invention;

[0036] Figure 3 is a structural schematic diagram of the ash discharging box of the present invention;

[0037] Figure 4 is a structural schematic diagram of the second protective cover of the present invention;

[0038] Figure 5 is Figure 4 an enlarged structural schematic diagram of A in;

[0039] Figure 6 is a structural schematic diagram of the heat exchange tube of the present invention;

[0040] Figure 7 is Figure 6 an enlarged structural schematic diagram of B in;

[0041] Figure 8 is Figure 6 an enlarged structural schematic diagram of C in;

[0042] Figure 9 is a structural schematic diagram of the installation seat of the present invention;

[0043] Figure 10 It is a schematic diagram of the installation pipe structure of the present invention;

[0044] Reference numerals: 1, box body; 2, cover; 3, intake pipe; 4, first protective cover; 5, exhaust pipe; 6, exhaust fan; 7, first motor; 8, dust collecting hood; 9, ash discharge box; 10, heat exchange pipe; 11, second protective cover; 12, controller; 13, positioning seat; 14, lead screw; 15, guide rod; 16, installation frame; 17, connecting plate; 18, cleaning roller; 19, transmission gear; 20, rack; 21, installation seat; 22, connecting column; 23, first spring; 24, installation sleeve; 25, pressing wheel; 26, auger; 27, ash discharge pipe; 28, second motor; 29, threaded sleeve; 30, installation pipe; 31, sliding seat; 32, limiting cover; 33, air filter element; 34, fixed cover; 35, temperature sensor; 36, sealing pipe; 37, driving synchronous pulley; 38, driven synchronous pulley; 39, transmission synchronous belt; 40, positioning column; 41, second spring. Specific embodiments

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] Embodiment: Refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7, An energy-saving intelligent device for recovering waste heat from the flue gas of industrial furnaces, comprising: a box body 1, an intake pipe 3 is fixedly installed on one side of the box body 1, an exhaust pipe 5 is fixedly installed on one side of the box body 1, a suction fan 6 is fixedly installed on one side of the exhaust pipe 5, a controller 12 is fixedly installed on one side of the box body 1, the suction fan 6 is electrically connected to the controller 12, and a heat exchange pipe 10 is fixedly installed inside the box body 1; positioning seats 13 are fixedly installed on both sides of the box body 1, a temperature sensor 35 is fixedly sleeved inside the positioning seat 13, the temperature sensor 35 is electrically connected to the controller 12, and a sealing pipe 36 is fixedly installed on the bottom surface of the positioning seat 13, and the sealing pipe 36 penetrates and extends into the exhaust pipe 5 and the water outlet of the heat exchange pipe 10; two cleaning components are arranged inside the box body 1 and are used to clean the heat exchange pipe 10 when ash accumulates on its surface; a driving component is arranged on one side of the box body 1 and is used to drive the cleaning components to work; a dust discharging component is arranged on the bottom surface of the box body 1 and is used to collect and discharge the ash cleaned from the surface of the heat exchange pipe 10; a filtering component is arranged on one side of the suction fan 6 and is used to purify and filter the discharged flue gas. During use, the high-temperature flue gas is drawn into the box body 1 through the external pipeline and the action of the suction fan 6. At this time, the waste heat in the high-temperature flue gas will conduct heat conversion with the water inside the heat exchange pipe 10, so as to recover and utilize the waste heat in the high-temperature flue gas. During this process, the two temperature sensors 35 will detect the temperature of the flue gas entering and the temperature of the drained water in real time. Then, when the temperature is lower than the measured value, the controller 12 controls to start the cleaning components to clean the ash on the surface of the heat exchange pipe 10. Then, the cleaned dust will be centrally collected inside the dust discharging component and discharged. And the flue gas after waste heat recovery will be filtered by the filtering component to filter the particulate impurities inside and then discharged, thereby achieving the effect of recovering and utilizing the waste heat in the flue gas, and at the same time facilitating the intelligent detection of the use condition of the heat exchange pipe 10 and improving its waste heat efficiency.

[0047] Based on the above embodiments, refer to Figure 2 , Figure 3 and Figure 4, the ash discharging assembly includes: a dust collecting hood 8, the dust collecting hood 8 is fixedly installed on the bottom surface of the box body 1, a dust discharging box 9 is fixedly installed on the bottom surface of the dust collecting hood 8, a second motor 28 is fixedly installed on one side of the dust discharging box 9, the second motor 28 is electrically connected to the controller 12, a screw conveyor 26 is rotatably connected inside the dust discharging box 9, one end of the driving shaft of the second motor 28 is fixedly installed with the screw conveyor 26, a dust discharging pipe 27 is fixedly installed on the bottom surface of the dust discharging box 9. When the ash accumulated on the surface of the heat exchange tube 10 is scraped off, the ash on the surface of the heat exchange tube 10 will enter the inside of the dust discharging box 9 along the inner wall of the dust collecting hood 8. Then, when the staff needs to clean and discharge the ash inside the dust discharging box 9, the staff starts the second motor 28. Then, the rotation of the driving shaft of the second motor 28 will drive the screw conveyor 26 to rotate. Then, the ash inside the dust discharging box 9 will move along the direction of the spiral blades on the surface of the screw conveyor 26. At this time, the staff opens the dust discharging pipe 27 to discharge the ash inside the dust discharging box 9, thereby achieving the effect of facilitating the collection and discharge of the ash cleaned from the surface of the heat exchange tube 10. Two second protective covers 11 are fixedly installed inside the box body 1, and the positions of the two second protective covers 11 correspond to the positions of the two lead screws 14. A first protective cover 4 is fixedly installed on one side of the box body 1, and one side of the first motor 7 is fixedly installed with the first protective cover 4. The driving shaft of the first motor 7 penetrates through the first protective cover 4, which is convenient for protecting the two lead screws 14 and the transmission synchronous belt 39. Based on the above embodiments, refer to Figure 4 , several guide rods 15 are fixedly installed inside the box body 1. Every two guide rods 15 form a group, and the guide rods 15 are slidably connected with the mounting frame 16, which is convenient for guiding and limiting the two mounting frames 16 when they move.

[0048] Based on the above embodiments, refer to Figure 2 、 Figure 4 、 Figure 5 and Figure 6, the cleaning assembly includes: two lead screws 14, both of the two lead screws 14 are rotatably connected inside the box body 1, the two lead screws 14 are arranged at intervals, a mounting frame 16 is threadedly connected to the outer circumferential wall surface of the lead screw 14, a connecting plate 17 is slidably connected inside the mounting frame 16, two positioning columns 40 are fixedly installed inside the mounting frame 16, the positioning columns 40 are slidably connected to the connecting plate 17, a second spring 41 is movably sleeved on the outer circumferential wall surface of the positioning column 40, a cleaning roller 18 is rotatably connected to the bottom surface of the connecting plate 17, driving gears 19 are fixedly sleeved on the outer circumferential wall surfaces at both ends of the cleaning roller 18, several racks 20 are fixedly installed inside the box body 1, every two racks 20 form a group, the positions of the racks 20 correspond to those of the driving gears 19, and the driving gears 19 are meshed with the racks 20. The staff uses the cleaning assembly through the driving assembly, and then the two lead screws 14 will rotate simultaneously. Then, under the action of the threaded transmission of the lead screw 14 and the mounting frame 16, the mounting frame 16 will move along the direction of the lead screw 14. During this process, with the meshing transmission of multiple driving gears 19 and multiple racks 20, the two cleaning rollers 18 will be driven to rotate simultaneously. Furthermore, with the resilience of multiple second springs 41, the two cleaning rollers 18 will always be attached to the surface of the heat exchange tube 10. Then, the two rotating and attached cleaning rollers 18 will scrape and clean the dust on the surface of the heat exchange tube 10, thereby achieving the effect of cleaning the surface of the heat exchange tube 10.

[0049] Based on the above embodiments, referring to Figure 6 , Figure 8 , Figure 9 and Figure 10, the driving assembly includes: two driven synchronous belt pulleys 38, both of the two driven synchronous belt pulleys 38 are arranged on one side of the box body 1, the inner circular wall surface of the driven synchronous belt pulley 38 is fixedly sleeved with the lead screw 14, a first motor 7 is arranged on one side of the box body 1, the first motor 7 is electrically connected to the controller 12, the outer circular wall surface of the driving shaft of the first motor 7 is fixedly sleeved with a driving synchronous belt pulley 37, a transmission synchronous belt 39 is arranged between the driving synchronous belt pulley 37 and the driven synchronous belt pulley 38, the driving synchronous belt pulley 37 and the driven synchronous belt pulley 38 are connected by belt drive through the transmission synchronous belt 39. When the staff needs to use the cleaning assembly, the staff starts the first motor 7 through the controller 12. Then, the rotation of the driving shaft of the first motor 7 will drive the driving synchronous belt pulley 37 to rotate. Then, under the belt drive of the driving synchronous belt pulley 37, the transmission synchronous belt 39 and the two driven synchronous belt pulleys 38, the two lead screws 14 will rotate accordingly, and drive the two groups of cleaning assemblies to move, so as to clean the dust on the surface of the heat exchange tube 10, thus achieving the effect of facilitating the simultaneous driving of the two groups of cleaning assemblies for use. The filtering assembly includes: a threaded sleeve 29, the threaded sleeve 29 is fixedly installed on one side of the exhaust fan 6, a mounting pipe 30 is threadedly connected inside the threaded sleeve 29, several sliding seats 31 are fixedly installed on the inner circular wall surface of the mounting pipe 30, a limiting cover 32 is arranged inside the sliding seat 31, the limiting cover 32 is slidably connected with the sliding seat 31, an air filter element 33 is movably sleeved inside the limiting cover 32, a fixing cover 34 is arranged on one side of the limiting cover 32, and the fixing cover 34 is fixedly installed with the sliding seat 31 through bolts. When the hot flue gas passes through the surface of the heat exchange tube 10 for waste heat recovery, the flue gas will enter the inside of the threaded sleeve 29 and the limiting cover 32 under the suction of the exhaust fan 6. At this time, the air filter element 33 inside the limiting cover 32 will filter the particulate impurities contained in the hot gas. Then, when the air filter element 33 is saturated in use, the staff can remove the exhaust fan 6 and the exhaust pipe 5. Then, the staff can screw out the sliding seat 31 from the inside of the threaded sleeve 29. At this time, the staff can slide out the fixing cover 34 together with the limiting cover 32 from the inside of the sliding seat 31. Then, the staff can remove the multiple bolts on one side of the fixing cover 34, separate the fixing cover 34 from the limiting cover 32, and replace the air filter element 33, thus achieving the effect of facilitating the filtering of particulate impurities in the hot gas. A mounting seat 21 is fixedly installed on one side of the box body 1, a first spring 23 is movably sleeved inside the mounting seat 21, a connecting column 22 is slidably connected inside the mounting seat 21, one end of the connecting column 22 is fixedly installed with a mounting sleeve 24, a pressing wheel 25 is rotatably connected inside the mounting sleeve 24, and the inner circular wall surface of the pressing wheel 25 is movably sleeved with the transmission synchronous belt 39. The first spring 23 drives the connecting column 22, the mounting sleeve 24 and the pressing wheel 25 to move through its resilience. Then, the pressing wheel 25 will push against the transmission synchronous belt 39 to keep it always in a tensioned state, thereby preventing the transmission synchronous belt 39 from falling off.

[0050] Working principle: Please refer toFigures 1 - 10 As shown, during use, the staff connects the external water pipe to the water inlet of the heat exchange pipe 10, and then docks and installs the external pipeline with the air inlet pipe 3. Then, the high-temperature flue gas inside the pipeline is drawn into the interior of the box body 1 by the exhaust fan 6. At this time, the heat exchange pipe 10 will perform heat conversion between the heat in the flue gas inside the box body 1 and the water inside the heat exchange pipe 10, thereby recovering and utilizing the waste heat in the flue gas. During this process, the staff can measure the temperature of the flue gas initially entering the interior of the box body 1 through the temperature sensor 35 outside the air inlet pipe 3, and then input the measured temperature value into the cover 2. Also, the temperature of the heated water is measured through the temperature sensor 35 outside the water outlet of the heat exchange pipe 10 and recorded in the data of the cover 2. Thus, when the heat exchange pipe 10 is used for a long time and soot accumulates on the surface of the heat exchange pipe 10, the cover 2 measures the temperature of the incoming flue gas and the water temperature of the drained water inside the heat exchange pipe 10 in real time. Then, when the temperature of the incoming flue gas and the drained water temperature deviate significantly from the set value, the cover 2 determines that soot has accumulated on the surface of the heat exchange pipe 10, and then the cover 2 controls the activation of the driving component to drive the cleaning component for use. Then, the cleaning component will clean the ash on the surface of the heat exchange pipe 10 and make it fall into the interior of the ash discharging component for collection. Then, the flue gas that has undergone heat conversion will pass through the filtering component to filter the particulate impurities inside it. When the ash in the smoke exhaust component accumulates to the full, the staff can start the smoke exhaust component through the cover 2 to discharge the ash inside it. In this way, the waste heat in the flue gas is recovered and utilized, and at the same time, it is convenient to intelligently detect the usage condition of the heat exchange pipe 10 to improve its waste heat efficiency.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent waste heat recovery device for the flue gas of an energy-saving industrial furnace, characterized in that, Comprising: A box body, on one side of the box body, an air inlet pipe is fixedly installed, on one side of the box body, an exhaust pipe is fixedly installed, on one side of the exhaust pipe, an exhaust fan is fixedly installed, on one side of the box body, a controller is fixedly installed, the exhaust fan is electrically connected to the controller, and inside the box body, a heat exchange pipe is fixedly installed; On both sides of the box body, positioning seats are respectively fixedly installed, inside the positioning seats, temperature sensors are fixedly sleeved, the temperature sensors are electrically connected to the controller, and on the bottom surface of the positioning seats, sealing pipes are fixedly installed, and the sealing pipes penetrate and extend into the inside of the exhaust pipe and the water outlet of the heat exchange pipe; Inside the box body, two cleaning components are provided and are used for cleaning the heat exchange pipe when dust accumulates on its surface; On one side of the box body, a driving component is provided and is used for driving the cleaning components to work; On the bottom surface of the box body, a dust discharging component is provided and is used for collecting and discharging the dust cleaned from the surface of the heat exchange pipe; On one side of the exhaust fan, a filtering component is provided and is used for purifying and filtering the discharged flue gas.

2. The intelligent recovery device for waste heat of flue gas of an energy-saving industrial furnace according to claim 1, wherein, The cleaning component includes: two lead screws, both of the lead screws are rotatably connected inside the box body, the two lead screws are arranged at intervals, a mounting frame is threadedly connected to the outer peripheral wall surface of the lead screw, inside the mounting frame, a connecting plate is slidably connected, inside the mounting frame, two positioning columns are fixedly installed, the positioning columns are slidably connected to the connecting plate, a second spring is movably sleeved on the outer peripheral wall surface of the positioning columns, a cleaning roller is rotatably connected to the bottom surface of the connecting plate, driving gears are fixedly sleeved on the outer peripheral wall surfaces at both ends of the cleaning roller, several racks are fixedly installed inside the box body, every two racks form a group, the positions of the racks and the driving gears correspond to each other, and the driving gears are meshed with the racks.

3. An intelligent waste heat recovery device for the flue gas of an energy-saving industrial furnace according to claim 1, characterized in that, The dust discharging component includes: a dust collecting cover, the dust collecting cover is fixedly installed on the bottom surface of the box body, a dust discharging box is fixedly installed on the bottom surface of the dust collecting cover, a second motor is fixedly installed on one side of the dust discharging box, the second motor is electrically connected to the controller, a screw conveyor is rotatably connected inside the dust discharging box, and one end of the driving shaft of the second motor is fixedly installed with the screw conveyor, and a dust discharging pipe is fixedly installed on the bottom surface of the dust discharging box.

4. An intelligent waste heat recovery device for the flue gas of an energy-saving industrial furnace according to claim 1, characterized in that, The filtering component includes: a threaded sleeve, the threaded sleeve is fixedly installed on one side of the exhaust fan, a mounting pipe is threadedly connected inside the threaded sleeve, several sliding seats are fixedly installed on the inner peripheral wall surface of the mounting pipe, a limiting cover is arranged inside the sliding seat, the limiting cover is slidably connected to the sliding seat, an air filter element is movably sleeved inside the limiting cover, and a fixing cover is arranged on one side of the limiting cover, and the fixing cover is fixedly installed with the sliding seat through bolts.

5. An intelligent waste heat recovery device for the flue gas of an energy-saving industrial furnace according to claim 2, characterized in that: Inside the box body, several guide rods are fixedly installed, every two guide rods form a group, and the guide rods are slidably connected to the mounting frame.

6. An intelligent waste heat recovery device for the flue gas of an energy-saving industrial furnace according to claim 2, characterized in that The driving component includes: two driven synchronous pulleys, both of the driven synchronous pulleys are arranged on one side of the box body, the inner peripheral wall surfaces of the driven synchronous pulleys are fixedly sleeved with the lead screws, a first motor is arranged on one side of the box body, the first motor is electrically connected to the controller, the outer peripheral wall surface of the driving shaft of the first motor is fixedly sleeved with a driving synchronous pulley, a transmission synchronous belt is arranged between the driving synchronous pulley and the driven synchronous pulleys, and the driving synchronous pulley and the driven synchronous pulleys are connected by belt transmission through the transmission synchronous belt.

7. An intelligent waste heat recovery device for the flue gas of an energy-saving industrial furnace according to claim 6, characterized in that, One side of the box body is fixedly installed with a mounting seat. A first spring is movably sleeved inside the mounting seat. A connecting column is slidably connected inside the mounting seat. One end of the connecting column is fixedly installed with a mounting sleeve. A pressing wheel is rotatably connected inside the mounting sleeve. The inner circular wall surface of the pressing wheel is movably sleeved with a transmission synchronous belt.

8. An intelligent waste heat recovery device for the flue gas of an energy-saving industrial furnace according to claim 6, characterized in that: Two second protective covers are fixedly installed inside the box body. The positions of the two second protective covers correspond to the positions of the two lead screws. One side of the box body is fixedly installed with a first protective cover. One side of the first motor is fixedly installed with the first protective cover. The driving shaft of the first motor penetrates through the first protective cover.

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