Alternative fuel efficient combustion device

Abstract

The invention relates to the technical field of kiln combustion devices, in particular to an efficient alternative fuel combustion device which comprises a furnace frame and further comprises a combustion furnace body, a fuel hopper and a heat exchange cylinder, the combustion furnace body, the fuel hopper and the heat exchange cylinder are all fixedly connected with the furnace frame, a motor is installed on the furnace frame, and the combustion furnace body is communicated with a flame spraying pipe and a guide component. The guide component is mounted on the furnace frame and linked with the motor, a rotatable inner shaft and a vibration combustion frame capable of reciprocating along the axis direction of the combustion furnace body are connected onto the guide component, and the inner shaft is rotationally connected with the vibration combustion frame. The device has the beneficial effects that after the fuel disc rotates, on one hand, alternative fuel can be uniformly distributed on the surface of the fuel disc, and on the other hand, comburent on the fuel disc can circularly face the flame nozzle and the air supply pipe, so that the alternative fuel can be recycled; therefore, the loss uniformity of the alternative fuel is effectively improved, and the fuel can be fully combusted, so that the waste rate of the fuel is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of kiln combustion devices, and in particular to a high-efficiency combustion device for alternative fuels. Background Art

[0002] In industrial heating and processing processes such as general furnaces, kilns, baking furnaces, distillation furnaces and open sintering equipment, with the continuous growth of global energy demand and increasingly stringent environmental protection standards, the research and development and application of alternative fuels have become an important research direction; however, there are many problems in the application of alternative fuels in the existing technology. First, the stability and controllability of alternative fuels are poor, which brings instability to production. Secondly, the combustion efficiency of alternative fuels in decomposition furnaces is low, resulting in increased fuel costs. Finally, the pollutant emissions generated during the combustion of alternative fuels are difficult to meet the standards, which puts pressure on the environment.

[0003] In the prior art, a patent document with publication number CN115560332A discloses a device for disposing alternative fuels using a cement kiln, including a decomposition furnace, a rotary kiln and a cement kiln tertiary air duct, wherein the cement kiln tertiary air duct is connected to the decomposition furnace, which is connected to the rotary kiln, and an incinerator is arranged between the cement kiln tertiary air duct and the decomposition furnace.

[0004] However, existing alternative fuel combustion devices still have many deficiencies in terms of combustion efficiency, fuel utilization, and flue gas waste heat recovery. Specifically, there are mainly the following problems: Low combustion efficiency: Traditional combustion devices often use static combustion methods, and the fuel is unevenly distributed in the combustion chamber, resulting in some fuel not being fully burned, which not only reduces the combustion efficiency but also increases the emission of harmful gases.

[0005] Low fuel utilization: Due to incomplete combustion, the energy in the fuel cannot be fully released, resulting in low fuel utilization and increased fuel consumption costs.

[0006] Insufficient recovery of flue gas waste heat: The flue gas generated during the combustion process often carries a large amount of heat energy, but traditional devices do not fully recycle this heat energy, resulting in energy waste. Summary of the invention

[0007] The present invention aims at the technical problems existing in the prior art and provides a fuel alternative high-efficiency combustion device to solve the problems that the prior art devices are not convenient for improving the combustion efficiency and the net burn rate of the fuel on the one hand, and are not convenient for realizing the recovery of waste heat during combustion and reducing the waste rate of fuel heat on the other hand.

[0008] The technical solution of the present invention to solve the above technical problems is as follows: an alternative fuel high-efficiency combustion device, including a furnace frame, and also including: A combustion furnace body, a fuel hopper and a heat exchange tube, wherein the combustion furnace body, the fuel hopper and the heat exchange tube are fixedly connected to a furnace frame, a motor is installed on the furnace frame, and a flame nozzle is connected to the combustion furnace body; A guide component is installed on the furnace frame and linked with the motor, the guide component is connected with a rotatable inner shaft and a vibration combustion frame that can reciprocate along the axial direction of the combustion furnace body, the inner shaft is rotatably connected with the vibration combustion frame, a central shaft is rotatably sleeved on the inner shaft, a fuel disturbance assembly is installed at the bottom of the central shaft, a rotating frame is rotatably sleeved on the central shaft, the rotating frame and the central shaft are linked with the inner shaft, a fuel tray is installed on the bottom surface of the rotating frame, a turning over cylinder is installed at the axial position of the combustion furnace body, a group of regularly distributed circulating material ports are opened on the turning over cylinder, a spiral lifting mesh is installed on the inner shaft, the spiral lifting mesh is fitted with the turning over cylinder, and a group of regularly distributed combustion-supporting flame nozzles are installed in the turning over cylinder; A fuel supply component, which is installed in the fuel hopper and feeds fuel into the combustion furnace body; The flue gas waste heat recovery component is installed on the heat exchange cylinder and is used to realize the flue gas waste heat recovery. The flue gas waste heat recovery component intakes air into the inner cavity of the combustion furnace body.

[0009] Based on the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the guiding component includes a core shaft and an upper guide shaft rotatably connected to the furnace frame, the output shaft end of the motor and the core shaft are both equipped with a first bevel tooth, the two first bevel teeth are meshed with each other, the upper guide shaft is equipped with a second bevel tooth, the second bevel tooth is transmission connected to the first bevel tooth on the core shaft, a connecting groove with a top opening is fixedly provided on the upper part of the inner shaft, a linkage section slidingly connected to the connecting groove is fixedly provided on the core shaft, the cross-sections of the linkage section and the connecting groove are both regular polygons, a missing gear is installed on the upper guide shaft, a guiding tooth plate is fixedly installed on the top surface of the vibration combustion frame, the missing gear is transmission connected to the guiding tooth plate, a T-shaped guide rod is installed on the vibration combustion frame, and the T-shaped guide rod sleeve is provided with a spring that is limited by the furnace frame.

[0011] The beneficial effect of adopting the above further scheme is that when the combustion operation is carried out, the motor outputs the speed at the set power. After the motor outputs the speed, the vibration combustion frame can reciprocate within the set stroke through the setting of the missing gear, the guide gear plate and the spring. After the vibration combustion frame reciprocates within the set stroke, it then drives the fuel tray, the middle shaft, the inner shaft and the rotating frame to reciprocate synchronously within the set stroke. In the process of the fuel tray, the middle shaft, the inner shaft and the rotating frame reciprocating synchronously within the set stroke, the fuel tray, the middle shaft, the inner shaft and the rotating frame can also rotate at the set speed; After the fuel disk rotates, on the one hand, the alternative fuel can be evenly distributed on the surface of the fuel disk, and on the other hand, the combustion products on the fuel disk can circulate to the flame nozzles and the air supply pipe, thereby recycling the alternative fuel, effectively improving the uniformity of the loss of the alternative fuel and allowing the fuel to be fully burned, thereby effectively reducing the fuel waste rate.

[0012] Furthermore, a lower guide shaft is rotatably connected to the vibration combustion frame, and a first differential bevel gear and a second differential bevel gear are respectively installed on the lower guide shaft. The inner shaft and the middle shaft are both installed with first side bevel gears, and the first differential bevel gears are respectively connected to the two first side bevel gears in a transmission manner. The two first bevel gears are symmetrically arranged with the horizontal plane where the axis of the lower guide shaft is located as the axis. A second side bevel gear is installed on the rotating frame, and the second differential bevel gear is connected to the second side bevel gear in a transmission manner.

[0013] The beneficial effect of adopting the above further solution is that, when in use, the inner shaft and the middle shaft are in a coaxial and oppositely rotating state through the arrangement of the lower guide shaft and the arrangement of the two first side bevel teeth; The second side bevel gear and the second differential bevel gear are arranged so that the rotating frame can rotate differentially with the inner shaft.

[0014] Furthermore, the fuel disturbance assembly includes an inner gear ring fixed on the rotating frame and a turntable fixed to the bottom end of the central shaft, a group of disturbance shafts distributed in a circular array are rotatably connected to the turntable, an outer gear transmission-connected to the inner gear ring is fixedly installed on the top end of each disturbance shaft, and a disturbance claw is fixedly installed on the bottom end of the disturbance shaft.

[0015] The beneficial effect of adopting the above further scheme is that when the motor outputs a rotational speed, the disturbance shaft, on the one hand, revolves at a set speed, and on the other hand, through the transmission connection setting of the external gear and the internal gear ring, can also spin at a set speed. Through the cycle of the revolution and rotation of the disturbance shaft, the alternative fuel on the fuel tray can be circulated, the alternative fuel can circulate on the fuel tray and be exposed to the wind, and the combustion heat of the alternative fuel can be fully volatilized, thereby effectively improving the combustion efficiency and net burn rate of the alternative fuel.

[0016] Furthermore, the bottom end of the reburning cylinder is connected to an ash discharge valve, and the spiral lifting mesh is provided with a plurality of groups of ash filter holes which are regularly distributed and cooperate with the ash discharge valve.

[0017] The beneficial effect of adopting the above further scheme is that when the fuel is burning, the spiral lifting mesh circulates and lifts the alternative fuel upward. The spiral lifting mesh circulates and lifts the fuel to fully ensure the contact rate between the alternative fuel and oxygen and enables the alternative fuel to dissipate heat at multiple angles during circulation. The vibration structure setting of the spiral lifting mesh during operation allows the ash on the surface of the fuel in the alternative fuel to fall off quickly. The fuel ash circulated and shaken off function is realized, so that the heat of the alternative fuel can be fully exposed and the contact efficiency between the alternative fuel and the air is improved.

[0018] Furthermore, the fuel supply component includes a lifting pipe installed at the axial position of the fuel hopper, a group of fuel leakage ports are opened at the bottom of the lifting pipe and at a position corresponding to the inner side of the fuel hopper, the inner wall of the lifting pipe is rotatably connected to a conveying shaft, and the conveying shaft is connected to the core shaft through a first belt. A spiral conveying blade is fixedly installed on the lifting pipe, and the upper part of the lifting pipe is connected to a discharge pipe, and the other end of the discharge pipe is fixedly connected to the combustion furnace body, and a flue gas guide assembly is installed on the upper part of the lifting pipe.

[0019] The beneficial effect of adopting the above further scheme is that when in use, the alternative fuel to be used is stored in the fuel hopper. When the combustion operation is in progress, the conveying shaft rotates at a set speed, and the spiral conveying blades are determined to lift the alternative fuel upward at a set flow rate and speed. The alternative fuel lifted by the spiral conveying blades is finally delivered into the combustion furnace body through the discharge pipe and falls onto the fuel tray.

[0020] Furthermore, the smoke guide assembly includes a smoke guide pipe, a smoke inlet port of the smoke guide pipe is connected to the inner cavity of the combustion furnace body, a smoke outlet port of the smoke guide pipe is connected to a smoke dividing ring, a smoke guide channel with openings at both ends is fixedly opened inside the conveying shaft, the inner cavity of the smoke dividing ring is rotatably connected to the smoke guide channel, a fan shell is installed in the middle of the smoke guide pipe, the inner wall of the fan shell is rotatably connected to a fan shaft, a group of fan blades are installed on the fan shaft and at a position corresponding to the inner side of the fan shell, a group of regularly distributed heat-transmitting holes connected to the smoke guide channel are opened inside the conveying shaft, and the bottom end of the smoke guide channel is connected to the heat exchange cylinder.

[0021] The beneficial effect of adopting the above further scheme is that when the fuel is burned, the flue gas generated in the combustion furnace body is finally sent into the smoke guide channel under the driving action of the fan blades, and the flue gas sent into the smoke guide channel is discharged through the heat-transmitting holes. The flue gas discharged through the heat-transmitting holes finally flows into the heat exchange cylinder. At the same time, the flue gas discharged through the heat-transmitting holes preheats the fuel in the combustion furnace body to realize the one-time utilization of the flue gas waste heat.

[0022] Furthermore, the flue gas waste heat recovery component includes a heat exchange chamber opened in the heat exchange cylinder, a group of regularly distributed air inlets connected to the heat exchange chamber are opened on the upper portion of the heat exchange cylinder, an air supply pipe is connected to the bottom of the heat exchange chamber, the other end of the air supply pipe is connected to the inner cavity of the combustion furnace body, the heat exchange cylinder is rotatably connected to the interior of the heat exchange cylinder, the heat exchange shaft is transmission-connected to the conveying shaft through a second belt, a smoke inlet channel and a smoke exhaust channel are respectively opened inside the heat exchange shaft from top to bottom, a spiral heat exchange plate is installed on the heat exchange shaft, the spiral heat exchange plate is fitted with the heat exchange chamber, a heat exchange cavity is opened inside the spiral heat exchange plate, the heat exchange cavity is adapted to the shape of the spiral heat exchange plate, the heat exchange cavity is respectively connected to the smoke inlet channel and the smoke exhaust channel, a smoke outlet pipe is provided on the top of the heat exchange cylinder, and the top of the smoke exhaust channel is connected to the smoke outlet pipe.

[0023] The beneficial effect of adopting the above further scheme is that when the fuel is burned, the heat exchange shaft rotates at a set speed. After the heat exchange shaft rotates, the conveying direction of the spiral heat exchange plate is downward, and then the external airflow entering the heat exchange cylinder is finally sent to the air supply pipe, thereby realizing the preheating of the intake airflow and then realizing the secondary utilization of the waste heat of the flue gas; The spiral heat exchange fins and the heat exchange cavity are arranged to effectively improve the recovery rate of flue gas waste heat.

[0024] Furthermore, the bottom end of the fuel hopper is connected to a discharge valve, and the top end of the fuel hopper is connected to a fuel filling pipe.

[0025] Furthermore, a single chip microcomputer is installed on the furnace frame, and a gas joint and an electronic igniter which cooperate with the combustion-supporting flame nozzle are respectively installed on the combustion furnace body.

[0026] The beneficial effect of adopting the above further scheme is that before the alternative fuel burns, the combustion-supporting flame nozzle sprays flames to heat the alternative fuel to a combustible state, and when the alternative fuel is heated to a combustible state, the combustion-supporting flame nozzle is closed.

[0027] The beneficial effects of the present invention are: 1. In the present invention, when the combustion operation is carried out, the motor outputs the speed at a set power. After the motor outputs the speed, the missing gear, the guide gear plate and the spring are set so that the vibration combustion frame can reciprocate within the set stroke. After the vibration combustion frame reciprocates within the set stroke, the fuel tray, the middle axis, the inner axis and the rotating frame are driven to reciprocate synchronously within the set stroke. In the process of the fuel tray, the middle axis, the inner axis and the rotating frame reciprocating synchronously within the set stroke, the fuel tray, the middle axis, the inner axis and the rotating frame can rotate at a set speed. After the fuel tray rotates, on the one hand, the alternative fuel can be evenly distributed on the surface of the fuel tray, and on the other hand, the combustion products on the fuel tray can circulate to the flame nozzle and the air supply pipe, and then the alternative fuel is recycled, thereby effectively improving the loss uniformity of the alternative fuel and allowing the fuel to be fully burned, thereby effectively reducing the fuel waste rate.

[0028] 2. In the present invention, when the motor outputs a rotational speed, the disturbance shaft, on the one hand, revolves at a set speed, and on the other hand, can spin at a set speed through the transmission connection setting of the outer gear and the inner gear ring. The revolution and rotation of the disturbance shaft occur cyclically, so that the alternative fuel on the fuel tray can be circulated, and the alternative fuel can circulate on the fuel tray to be exposed to the wind, and the combustion heat of the alternative fuel can be fully volatilized, thereby effectively improving the combustion efficiency and net burn rate of the alternative fuel.

[0029] 3. In the present invention, when the fuel is burning, the spiral lifting mesh circulates and lifts the alternative fuel upward. The spiral lifting mesh circulates and lifts the fuel to fully ensure the contact rate between the alternative fuel and oxygen and allows the alternative fuel to dissipate heat at multiple angles during circulation. The vibrating structure of the spiral lifting mesh during operation allows the ash on the surface of the fuel in the alternative fuel to fall off quickly. The function of circulated shaking off of the fuel ash is realized, so that the heat of the alternative fuel can be fully exposed and the contact efficiency between the alternative fuel and the air is improved.

[0030] 4. In the present invention, when the fuel is burning, the flue gas generated in the combustion furnace body is finally sent into the smoke guide channel under the driving action of the fan blades, and the flue gas sent into the smoke guide channel is discharged through the heat-transmitting holes. The flue gas discharged through the heat-transmitting holes finally flows into the heat exchange tube. At the same time, the flue gas discharged through the heat-transmitting holes preheats the fuel in the combustion furnace body to realize the primary utilization of the flue gas waste heat. When the fuel is burning, the heat exchange shaft rotates at a set speed. After the heat exchange shaft rotates, the conveying direction of the spiral heat exchange plate is downward, and then the external airflow entering the heat exchange tube is finally sent into the air supply pipe, thereby realizing the preheating of the intake airflow and then realizing the secondary utilization of the flue gas waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of an alternative fuel high-efficiency combustion device of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the structure from another perspective; Figure 3 For the present invention Figure 2 A schematic cross-sectional structure diagram of ; Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at point A in the middle; Figure 5 For the present invention Figure 3 A schematic diagram of the local enlarged structure at B in the middle; Figure 6 For the present invention Figure 3 A schematic diagram of the local enlarged structure at C in the middle; Figure 7 For the present invention Figure 3 A schematic diagram of the local enlarged structure at D in the middle; Figure 8 It is a structural schematic diagram of the fuel hopper and the heat exchange shaft of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the local enlarged structure at point E in the middle.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Furnace frame; 2. Combustion furnace body; 3. Fuel hopper; 4. Heat exchange cylinder; 5. Motor; 6. Flame nozzle; 7. Inner shaft; 8. Vibration combustion frame; 9. Middle shaft; 10. Rotary frame; 11. Fuel tray; 12. Turning cylinder; 13. Circulation material port; 14. Spiral lifting mesh; 15. Combustion flame nozzle; 16. Mandrel; 17. Upper guide shaft; 18. Missing gear; 19. Guide gear plate; 20. Spring; 21. Lower guide shaft; 22. Turntable; 23. Disturbance shaft; 24. Inner gear ring; 25. Outer gear; 26. Disturbance claw; 27, ash discharge valve; 28, ash filter hole; 29, lifting pipe; 30, fuel leakage port; 31, conveying shaft; 32, spiral conveying blade; 33, feeding pipe; 34, smoke inlet pipe; 35, smoke separation ring; 36, smoke guide channel; 37, fan shell; 38, fan shaft; 39, heat-transmitting hole; 40, heat exchange chamber; 41, air inlet; 42, air supply pipe; 43, heat exchange shaft; 44, smoke inlet channel; 45, smoke exhaust channel; 46, spiral heat exchange plate; 47, heat exchange chamber; 48, smoke outlet pipe; 49, discharge valve. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] The present invention provides the following preferred embodiments like Figure 1-9As shown, a high-efficiency combustion device for alternative fuels includes a furnace frame 1, on which a single-chip microcomputer is installed, and further includes: The combustion furnace body 2, the fuel hopper 3 and the heat exchange tube 4 are all fixedly connected to the furnace frame 1. The furnace frame 1 is equipped with a motor 5. The combustion furnace body 2 is connected with a flame nozzle 6. The bottom end of the fuel hopper 3 is connected to a discharge valve 49, and the top end of the fuel hopper 3 is connected to a fuel filling pipe; The guide component is installed on the furnace frame 1 and is linked with the motor 5. The guide component is connected with a rotatable inner shaft 7 and a vibration combustion frame 8 that can reciprocate along the axis direction of the combustion furnace body 2; The inner shaft 7 is rotatably connected to the vibration combustion frame 8; The guide member includes a core shaft 16 and an upper guide shaft 17 rotatably connected to the furnace frame 1, and first bevel gears are installed on the output shaft end of the motor 5 and the core shaft 16, and the two first bevel gears are meshed with each other; The upper guide shaft 17 is provided with a second bevel gear, which is transmission-connected to the first bevel gear on the core shaft 16; The upper part of the inner shaft 7 is fixedly provided with a coupling groove with an opening at the top, and the core shaft 16 is fixedly provided with a linkage section slidably connected with the coupling groove, and the cross sections of the linkage section and the coupling groove are both regular polygons; A missing gear 18 is installed on the upper guide shaft 17, and a guide tooth plate 19 is fixedly installed on the top surface of the vibration combustion frame 8. The missing gear 18 is transmission-connected with the guide tooth plate 19. A T-shaped guide rod is installed on the vibration combustion frame 8, and the T-shaped guide rod sleeve is provided with a spring 20 that is limited by the furnace frame 1.

[0035] When the combustion operation is performed, the motor 5 outputs the speed at the set power. After the motor 5 outputs the speed, the missing gear 18, the guide gear plate 19 and the spring 20 are set, so that the vibration combustion frame 8 can reciprocate within the set stroke. After the vibration combustion frame 8 reciprocates within the set stroke, it then drives the fuel tray 11, the middle axis 9, the inner axis 7 and the rotating frame 10 to reciprocate within the set stroke synchronously. In the process of the fuel tray 11, the middle axis 9, the inner axis 7 and the rotating frame 10 reciprocating within the set stroke synchronously, the fuel tray 11, the middle axis 9, the inner axis 7 and the rotating frame 10 can rotate at the set speed again; After the fuel tray 11 rotates, on the one hand, the alternative fuel can be evenly distributed on the surface of the fuel tray 11, and on the other hand, the combustion products on the fuel tray 11 can circulate to the flame nozzle and the air supply pipe, and then the alternative fuel is circulated, thereby effectively improving the uniformity of the loss of the alternative fuel and allowing the fuel to be fully burned, thereby effectively reducing the waste rate of the fuel; A central shaft 9 is rotatably sleeved on the inner shaft 7, and a fuel disturbance assembly is installed at the bottom of the central shaft 9; The fuel disturbance assembly includes an inner gear ring 24 fixed on the rotating frame 10 and a turntable 22 fixed to the bottom end of the central axis 9. A group of disturbance shafts 23 distributed in a circular array are rotatably connected to the turntable 22. The top end of each disturbance shaft 23 is fixedly mounted with an outer gear 25 that is transmission-connected to the inner gear ring 24, and the bottom end of the disturbance shaft 23 is fixedly mounted with a disturbance claw 26.

[0036] When the motor 5 outputs a rotation speed, the disturbance shaft 23, on the one hand, undergoes a revolution motion at a set speed, and on the other hand, can undergo a self-spin motion at a set speed through the transmission connection setting between the outer gear 25 and the inner gear ring 24. The revolution and self-spin motion of the disturbance shaft 23 occur in a cycle, so that the alternative fuel on the fuel tray 11 can be circulated, and the alternative fuel can be circulated on the fuel tray 11 to be exposed to the wind, and the combustion heat of the alternative fuel can be fully volatilized, thereby effectively improving the combustion efficiency and net combustion rate of the alternative fuel; A rotating frame 10 is rotatably sleeved on the middle shaft 9, and the rotating frame 10 and the middle shaft 9 are both linked with the inner shaft 7; A lower guide shaft 21 is rotatably connected to the vibration combustion frame 8, and the first differential bevel gear and the second differential bevel gear are respectively installed on the lower guide shaft 21. The inner shaft 7 and the middle shaft 9 are both installed with first side bevel gears, and the first differential bevel gears are respectively connected to the two first side bevel gears in driving connection. The two first bevel gears are symmetrically arranged with the horizontal plane where the axis of the lower guide shaft 21 is located as the axis. The second side bevel gear is installed on the rotating frame 10, and the second differential bevel gear is connected to the second side bevel gear in driving connection.

[0037] When in use, the lower guide shaft 21 and the two first side bevel teeth are arranged so that the inner shaft 7 and the middle shaft 9 are in a coaxial and oppositely rotating state; By providing the second side bevel gear and the second differential bevel gear, the rotating frame 10 can rotate differentially with the inner shaft 7; A fuel tray 11 is installed on the bottom surface of the rotating frame 10, and a reburning cylinder 12 is installed at the axial position of the combustion furnace body 2. The bottom end of the reburning cylinder 12 is connected to an ash discharge valve 27; A group of regularly distributed circulating material ports 13 are provided on the reflaming cylinder 12, a spiral lifting mesh 14 is installed on the inner shaft 7, a plurality of regularly distributed ash filtering holes 28 cooperating with the ash discharge valve 27 are provided on the spiral lifting mesh 14, the spiral lifting mesh 14 is fitted with the reflaming cylinder 12, and a group of regularly distributed combustion-supporting flame nozzles 15 are installed in the reflaming cylinder 12; When the fuel is burning, the spiral lifting mesh 14 circulates and lifts the alternative fuel upward. The spiral lifting mesh 14 circulates and lifts the fuel to fully ensure the contact rate between the alternative fuel and oxygen and to allow the alternative fuel to dissipate heat at multiple angles during circulation. The vibrating structure of the spiral lifting mesh 14 during operation allows the ash on the surface of the alternative fuel to fall off quickly. The circulatory shaking-off function of the fuel ash is realized to fully expose the heat of the alternative fuel and improve the contact efficiency between the alternative fuel and air. A fuel supply component is installed in the fuel hopper 3 and feeds fuel into the combustion furnace body 2; The fuel supply component includes a lifting pipe 29 installed at the axial position of the fuel hopper 3. A group of fuel leaks 30 are opened at the bottom of the lifting pipe 29 and at a position corresponding to the inner side of the fuel hopper 3. The inner wall of the lifting pipe 29 is rotatably connected to a conveying shaft 31, and the conveying shaft 31 is transmission-connected to the core shaft 16 through a first belt. A spiral conveying blade 32 is fixedly installed on the lifting pipe 29. The upper part of the lifting pipe 29 is connected to a discharge pipe 33. The other end of the discharge pipe 33 is fixedly connected to the combustion furnace body 2. A flue gas guide component is installed on the upper part of the lifting pipe 29.

[0038] When in use, the alternative fuel to be used is stored in the fuel hopper 3. When the combustion operation is in progress, the conveying shaft 31 rotates at a set speed, and the spiral conveying blade 32 is determined to lift the alternative fuel upward at a set flow rate and speed. The alternative fuel lifted by the spiral conveying blade 32 is finally sent into the combustion furnace body 2 through the discharge pipe 33 and falls onto the fuel tray 11. The smoke guide assembly includes a smoke guide pipe 34, a smoke inlet port of the smoke guide pipe 34 is connected to the inner cavity of the combustion furnace body 2, a smoke outlet port of the smoke guide pipe 34 is connected to a smoke dividing ring 35, a smoke guide channel 36 with openings at both ends is fixedly opened inside the conveying shaft 31, the inner cavity of the smoke dividing ring 35 is rotatably connected to the smoke guide channel 36, a fan shell 37 is installed in the middle of the smoke guide pipe 34, the inner wall of the fan shell 37 is rotatably connected to a fan shaft 38, a group of fan blades are installed on the fan shaft 38 and at a position corresponding to the inner side of the fan shell 37, a group of regularly distributed heat-transmitting holes 39 connected to the smoke guide channel 36 are opened inside the conveying shaft 31, and the bottom end of the smoke guide channel 36 is connected to the heat exchange cylinder 4.

[0039] When the fuel is burning, the flue gas generated in the combustion furnace body 2 is finally sent into the smoke guide channel 36 under the driving action of the fan blades, and the flue gas sent into the smoke guide channel 36 is discharged through the heat-transmitting holes 39. The flue gas discharged through the heat-transmitting holes 39 finally flows into the heat exchange cylinder 4. At the same time, the flue gas discharged through the heat-transmitting holes 39 preheats the fuel in the combustion furnace body 2 to realize the primary utilization of the flue gas waste heat. The flue gas waste heat recovery component is installed on the heat exchange cylinder 4 and is used to realize the flue gas waste heat recovery. The flue gas waste heat recovery component intakes air into the inner cavity of the combustion furnace body 2.

[0040] The flue gas waste heat recovery component includes a heat exchange chamber 47 opened in the heat exchange cylinder 4. A group of regularly distributed air inlets 41 connected to the heat exchange chamber 47 are opened on the upper part of the heat exchange cylinder 4. The bottom of the heat exchange chamber 47 is connected to an air supply pipe 42. The other end of the air supply pipe 42 is connected to the inner cavity of the combustion furnace body 2. The heat exchange shaft 43 is rotatably connected to the inside of the heat exchange cylinder 4. The heat exchange shaft 43 is connected to the conveying shaft 31 through a second belt. The inside of the heat exchange shaft 43 is connected from top to bottom. A smoke inlet channel 44 and a smoke exhaust channel 45 are respectively provided, a spiral heat exchange plate 46 is installed on the heat exchange shaft 43, the spiral heat exchange plate 46 is in contact with the heat exchange chamber 47, a heat exchange cavity 40 is provided inside the spiral heat exchange plate 46, the heat exchange cavity 40 is adapted to the shape of the spiral heat exchange plate 46, the heat exchange cavity 40 is respectively connected with the smoke inlet channel 44 and the smoke exhaust channel 45, a smoke outlet pipe 48 is provided on the top of the heat exchange cylinder 4, and the top of the smoke exhaust channel 45 is connected with the smoke outlet pipe 48.

[0041] When the fuel is burning, the heat exchange shaft 43 rotates at a set speed. After the heat exchange shaft 43 rotates, the conveying direction of the spiral heat exchange plate 46 is downward, and then the external airflow entering the heat exchange cylinder 4 is finally sent to the air supply pipe 42, thereby realizing the preheating of the intake airflow and then realizing the secondary utilization of the waste heat of the flue gas; The spiral heat exchange fins 46 and the heat exchange chamber 40 are provided to effectively improve the recovery rate of the flue gas waste heat.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An alternative fuel high-efficiency combustion device, comprising a furnace frame (1), characterized in that: Also includes: A combustion furnace body (2), a fuel hopper (3) and a heat exchange tube (4), wherein the combustion furnace body (2), the fuel hopper (3) and the heat exchange tube (4) are all fixedly connected to a furnace frame (1), a motor (5) is installed on the furnace frame (1), and a flame nozzle (6) is connected to the combustion furnace body (2); A guide component is mounted on the furnace frame (1) and is linked to the motor (5); the guide component is connected to a rotatable inner shaft (7) and a combustion vibration frame (8) that can reciprocate along the axis of the combustion furnace body (2); the inner shaft (7) is rotatably connected to the combustion vibration frame (8); a central shaft (9) is rotatably sleeved on the inner shaft (7); a fuel disturbance assembly is mounted on the bottom of the central shaft (9); a rotating frame (10) is rotatably sleeved on the central shaft (9); the rotating frame (10) and the central shaft (9) are connected to each other. All are linked with the inner shaft (7), a fuel tray (11) is installed on the bottom surface of the rotating frame (10), a reflashing cylinder (12) is installed at the axial position of the combustion furnace body (2), a group of regularly distributed circulating material ports (13) are opened on the reflashing cylinder (12), a spiral lifting mesh (14) is installed on the inner shaft (7), the spiral lifting mesh (14) is fitted with the reflashing cylinder (12), and a group of regularly distributed combustion-supporting flame nozzles (15) are installed in the reflashing cylinder (12); A fuel supply component is installed in the fuel hopper (3) and supplies fuel to the combustion furnace body (2); The flue gas waste heat recovery component is installed on the heat exchange cylinder (4) and is used to realize flue gas waste heat recovery, and the flue gas waste heat recovery component intakes air into the inner cavity of the combustion furnace body (2).

2. The alternative fuel high-efficiency combustion device according to claim 1, characterized in that: The guide component comprises a core shaft (16) and an upper guide shaft (17) which are rotatably connected to the furnace frame (1); a first bevel tooth is installed on the output shaft end of the motor (5) and the core shaft (16); the two first bevel teeth are meshed with each other; a second bevel tooth is installed on the upper guide shaft (17); the second bevel tooth is transmission-connected to the first bevel tooth on the core shaft (16); a coupling groove with a top opening is fixedly provided on the upper part of the inner shaft (7); a linkage section which is slidably connected to the coupling groove is fixedly provided on the core shaft (16); the cross-sections of the linkage section and the coupling groove are both regular polygons; a missing gear (18) is installed on the upper guide shaft (17); a guide tooth plate (19) is fixedly installed on the top surface of the vibration combustion frame (8); the missing gear (18) is transmission-connected to the guide tooth plate (19); a T-shaped guide rod is installed on the vibration combustion frame (8); the T-shaped guide rod sleeve is provided with a spring (20) which is limited by the furnace frame (1).

3. The alternative fuel high-efficiency combustion device according to claim 2, characterized in that: The oscillating combustion frame (8) is rotatably connected to a lower guide shaft (21), and the lower guide shaft (21) is respectively mounted with a first differential bevel gear and a second differential bevel gear. The inner shaft (7) and the middle shaft (9) are both mounted with a first side bevel gear, and the first differential bevel gear is respectively connected to the two first side bevel gears in a transmission manner. The two first bevel gears are symmetrically arranged with the horizontal plane where the axis of the lower guide shaft (21) is located as the axis. The rotating frame (10) is mounted with a second side bevel gear, and the second differential bevel gear is connected to the second side bevel gear in a transmission manner.

4. The alternative fuel high-efficiency combustion device according to claim 3, characterized in that: The fuel disturbance assembly comprises an inner gear ring (24) fixed on a rotating frame (10) and a rotating disk (22) fixed on the bottom end of a central shaft (9); a group of disturbance shafts (23) distributed in a circumferential array are rotatably connected to the rotating disk (22); an outer gear (25) drivingly connected to the inner gear ring (24) is fixedly mounted on the top end of each disturbance shaft (23); and a disturbance claw (26) is fixedly mounted on the bottom end of the disturbance shaft (23).

5. The alternative fuel high-efficiency combustion device according to claim 4, characterized in that: The bottom end of the reburning cylinder (12) is connected to an ash discharge valve (27), and the spiral lifting mesh (14) is provided with a plurality of groups of regularly distributed ash filter holes (28) that cooperate with the ash discharge valve (27).

6. The alternative fuel high-efficiency combustion device according to claim 5, characterized in that: The fuel supply component comprises a lifting pipe (29) installed at the axial position of the fuel hopper (3), a group of fuel leaking ports (30) are opened at the bottom of the lifting pipe (29) and at a position corresponding to the inner side of the fuel hopper (3), the inner wall of the lifting pipe (29) is rotatably connected to a conveying shaft (31), the conveying shaft (31) is transmission-connected to a core shaft (16) via a first belt, a spiral conveying blade (32) is fixedly installed on the lifting pipe (29), the upper part of the lifting pipe (29) is connected to a discharge pipe (33), the other end of the discharge pipe (33) is fixedly connected to a combustion furnace body (2), and a smoke guide assembly is installed on the upper part of the lifting pipe (29).

7. The alternative fuel high-efficiency combustion device according to claim 6, characterized in that: The smoke guide assembly comprises a smoke guide pipe (34), a smoke inlet port of the smoke guide pipe (34) being connected to the inner cavity of the combustion furnace body (2), a smoke outlet port of the smoke guide pipe (34) being connected to a smoke dividing ring (35), a smoke guide channel (36) with openings at both ends being fixedly provided inside the conveying shaft (31), the inner cavity of the smoke dividing ring (35) being rotatably connected to the smoke guide channel (36), a fan shell (37) being installed in the middle of the smoke guide pipe (34), the inner wall of the fan shell (37) being rotatably connected to a fan shaft (38), a group of fan blades being installed on the fan shaft (38) and at a position corresponding to the inner side of the fan shell (37), a group of regularly distributed heat-transmitting holes (39) being provided inside the conveying shaft (31) and being connected to the smoke guide channel (36), the bottom end of the smoke guide channel (36) being connected to the heat exchange cylinder (4).

8. The alternative fuel high-efficiency combustion device according to claim 7, characterized in that: The flue gas waste heat recovery component comprises a heat exchange chamber (47) opened in the heat exchange cylinder (4); a group of regularly distributed air inlets (41) connected to the heat exchange chamber (47) are opened on the upper part of the heat exchange cylinder (4); an air supply pipe (42) is connected to the bottom of the heat exchange chamber (47); the other end of the air supply pipe (42) is connected to the inner cavity of the combustion furnace body (2); a heat exchange shaft (43) is rotatably connected inside the heat exchange cylinder (4); the heat exchange shaft (43) is transmission-connected to the conveying shaft (31) through a second belt; the inside of the heat exchange shaft (43) is respectively opened from top to bottom: A smoke inlet channel (44) and a smoke exhaust channel (45) are provided, a spiral heat exchange plate (46) is installed on the heat exchange shaft (43), the spiral heat exchange plate (46) is fitted with a heat exchange chamber (47), a heat exchange cavity (40) is provided inside the spiral heat exchange plate (46), the heat exchange cavity (40) is adapted to the shape of the spiral heat exchange plate (46), the heat exchange cavity (40) is communicated with the smoke inlet channel (44) and the smoke exhaust channel (45) respectively, a smoke outlet pipe (48) is provided at the top of the heat exchange cylinder (4), and the top end of the smoke exhaust channel (45) is communicated with the smoke outlet pipe (48).

9. The alternative fuel high-efficiency combustion device according to claim 8, characterized in that: The bottom end of the fuel hopper (3) is connected to a discharge valve (49), and the top end of the fuel hopper (3) is connected to a fuel filling pipe.

10. The alternative fuel high-efficiency combustion device according to claim 1, characterized in that: A single-chip microcomputer is installed on the furnace frame (1), and a gas connector and an electronic igniter that cooperate with a combustion-supporting flame nozzle (15) are respectively installed on the combustion furnace body (2).

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