An efficient combustion device for alternative fuels

Abstract

The present invention relates to the technical field of kiln combustion devices, and specifically relates to an efficient combustion device for alternative fuels, including a furnace frame, and further including: 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 to the furnace frame. A motor is installed on the furnace frame. A flame nozzle is communicated with the combustion furnace body. A guiding component is installed on the furnace frame and is linked with the motor. A rotatable inner shaft and a vibration combustion frame that can reciprocate along the axis direction of the combustion furnace body are connected to the guiding component. The inner shaft is rotationally connected to the vibration combustion frame. The beneficial effect of the present invention is that in the present invention, after the fuel rotates, on the one hand, it enables the alternative fuel to be evenly distributed on the surface of the fuel tray, and on the other hand, it enables the combustibles on the fuel tray to circulate towards 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 enabling the fuel to be fully burned, thus effectively reducing the waste rate of the fuel.

Description

Technical Field

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

[0002] In industrial heating and processing processes such as general furnaces, kilns, baking ovens, distillation furnaces, and open sintering equipment, with the continuous growth of global energy demand and the increasingly strict environmental protection standards, the research and application of alternative fuels have become an important research direction; however, there are many problems in the application of alternative fuels in the prior art. First, the stability and controllability of alternative fuels are poor, bringing unstable factors to production. Second, the combustion efficiency of alternative fuels in the decomposition furnace is low, resulting in an increase in fuel costs. Finally, the pollutant emissions generated during the combustion of alternative fuels are difficult to meet the standards, bringing pressure to the environment.

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

[0004] However, existing alternative fuel combustion devices still have many deficiencies in terms of combustion efficiency, fuel utilization rate, and flue gas waste heat recovery. Specifically, there are mainly the following problems:

[0005] Low combustion efficiency: Traditional combustion devices often adopt a static combustion method, and the fuel is unevenly distributed in the combustion chamber, resulting in incomplete combustion of some fuels, which not only reduces the combustion efficiency but also increases the emission of harmful gases.

[0006] Low fuel utilization rate: Due to incomplete combustion, the energy in the fuel cannot be fully released, resulting in low fuel utilization rate and increased fuel consumption costs.

[0007] Insufficient flue gas waste heat recovery: The flue gas generated during the combustion process often carries a large amount of heat energy, but traditional devices do not fully recover and utilize this part of the heat energy, resulting in waste of energy. Summary of the Invention

[0008] In view of the technical problems existing in the prior art, the present invention provides a high-efficiency combustion device for alternative fuels to solve the problems that on the one hand, it is not convenient to improve the combustion efficiency and burnout rate of fuels in existing devices, and on the other hand, it is not convenient to recover waste heat during combustion and reduce the waste rate of fuel heat.

[0009] The technical solution of the present invention to solve the above technical problems is as follows: A high-efficiency combustion device for alternative fuels, including a furnace frame, and further including:

[0010] A combustion furnace body, a fuel hopper and a heat exchange cylinder, wherein the combustion furnace body, the fuel hopper and the heat exchange cylinder are all fixedly connected to a furnace frame, a motor is installed on the furnace frame, and a flame nozzle is communicated with the combustion furnace body;

[0011] A guiding component, installed 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 to the guiding component, the inner shaft is rotationally connected to the vibration combustion frame, a middle shaft is rotationally sleeved on the inner shaft, a fuel disturbance component is installed at the bottom of the middle shaft, a rotating frame is rotationally sleeved on the middle shaft, the rotating frame and the middle shaft are both linked with the inner shaft, a fuel tray is installed on the bottom surface of the rotating frame, a turning combustion cylinder is installed at the axis position of the combustion furnace body, a group of regularly distributed circulating material openings are formed in the turning combustion cylinder, a spiral lifting mesh is installed on the inner shaft, the spiral lifting mesh is attached to the turning combustion cylinder, and a group of regularly distributed combustion assisting flame nozzles are installed in the turning combustion cylinder;

[0012] A fuel supply component, installed in the fuel hopper and feeding materials into the combustion furnace body;

[0013] A flue gas waste heat recovery component, installed on the heat exchange cylinder and used for realizing flue gas waste heat recovery, and the flue gas waste heat recovery component intakes air into the inner cavity of the combustion furnace body.

[0014] On the basis of the above technical solution, the present invention can also be improved as follows.

[0015] Further, the guiding component includes a core shaft and an upper guiding shaft rotatably connected to the furnace frame, first bevel gears are installed at the output shaft end of the motor and on the core shaft, the two first bevel gears mesh with each other, a second bevel gear is installed on the upper guiding shaft, the second bevel gear is in transmission connection with the first bevel gear on the core shaft, a top-opening joint groove is fixedly formed in the upper part of the inner shaft, a linkage section slidably connected with the joint groove is fixedly arranged on the core shaft, the cross sections of the linkage section and the joint groove are both regular polygons, a missing gear is installed on the upper guiding shaft, a guiding tooth plate is fixedly installed on the top surface of the vibration combustion frame, the missing gear is in transmission connection with the guiding tooth plate, a T-shaped guiding rod is installed on the vibration combustion frame, and a spring limited by the furnace frame is sleeved on the T-shaped guiding rod.

[0016] The beneficial effect of adopting the above further scheme is that when combustion operation is carried out, the motor outputs a rotation speed at a set power. After the motor outputs the rotation speed, through the settings of the missing gear, the guiding tooth plate and the spring, the vibration combustion frame can reciprocate within a set stroke. 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 synchronously reciprocate within the set stroke. And during the process that the fuel tray, the middle shaft, the inner shaft and the rotating frame synchronously reciprocate within the set stroke, the fuel tray, the middle shaft, the inner shaft and the rotating frame can also rotate at a set speed;

[0017] After the fuel rotates, on the one hand, it enables the alternative fuel to be evenly distributed on the surface of the fuel tray, and on the other hand, it enables the combustibles on the fuel tray to circulate towards 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 enabling the fuel to be fully burned, thus effectively reducing the fuel waste rate.

[0018] Furthermore, a lower guide shaft is rotatably connected to the vibration combustion frame, a first differential bevel gear and a second differential bevel gear are respectively installed on the lower guide shaft, first side bevel gears are installed on both the inner shaft and the middle shaft, the first differential bevel gears are respectively in transmission connection with the two first side bevel gears, and 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 in transmission connection with the second side bevel gear.

[0019] The beneficial effect of adopting the above further solution is that during use, through the setting of the lower guide shaft and the two first side bevel gears, the inner shaft and the middle shaft are in a coaxial reverse rotation state;

[0020] Through the setting of the second side bevel gear and the second differential bevel gear, the rotating frame can rotate differentially with the inner shaft.

[0021] Furthermore, the fuel disturbance assembly includes an internal gear ring fixed to the rotating frame and a turntable fixed to the bottom end of the middle shaft. A group of disturbance shafts distributed in a circumferential array are rotatably connected to the turntable. An external gear in transmission connection with the internal gear ring is fixedly installed at the top end of each disturbance shaft, and a disturbance claw is fixedly installed at the bottom end of the disturbance shaft.

[0022] The beneficial effect of adopting the above further solution is that when the motor outputs a rotational speed, the disturbance shaft makes a revolution motion at a set speed on the one hand, and on the other hand, through the transmission connection between the external gear and the internal gear ring, it can also make a self-rotation motion at a set speed. Through the cyclic occurrence of the revolution and self-rotation motions of the disturbance shaft, the alternative fuel on the fuel tray can be cyclically stirred, the alternative fuel can be cyclically exposed to the wind on the fuel tray, and the combustion heat of the alternative fuel can be fully volatilized, thereby effectively improving the combustion efficiency and burnout rate of the alternative fuel.

[0023] Furthermore, a dust discharge valve is connected to the bottom end of the fuel turning cylinder, and a plurality of groups of regularly distributed ash filtering holes cooperating with the dust discharge valve are formed on the spiral lifting mesh.

[0024] The beneficial effect of adopting the above-mentioned 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 of the alternative fuel with the air is improved.

[0025] Furthermore, the fuel supply component includes a lifting pipe installed at the axis position of the fuel hopper, and 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. A flue gas guide assembly is installed on the upper part of the lifting pipe.

[0026] 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 blade is determined to lift the alternative fuel upward at a set flow rate and speed. The alternative fuel lifted by the spiral conveying blade is finally sent into the combustion furnace body through the discharge pipe and falls onto the fuel tray.

[0027] Furthermore, the smoke diversion assembly includes a smoke duct, the smoke inlet port of the smoke duct is connected to the inner cavity of the combustion furnace body, the smoke outlet port of the smoke duct 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 duct, the inner wall of the fan shell is rotatably connected to the 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.

[0028] The beneficial effect of adopting the above-mentioned 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 eventually 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.

[0029] Furthermore, the flue gas waste heat recovery component includes a heat exchange chamber opened in the heat exchange cylinder. A set of regularly distributed air inlets communicating with the heat exchange chamber are opened in the upper part of the heat exchange cylinder. A blower pipe is communicated with the bottom of the heat exchange chamber, and the other end of the blower pipe is communicated with the inner cavity of the combustion furnace body. A heat exchange shaft is rotatably connected inside the heat exchange cylinder. The heat exchange shaft is drivingly connected with the conveying shaft through a second belt. A smoke inlet channel and a smoke outlet channel are respectively opened in the heat exchange shaft from top to bottom. A spiral heat exchange fin is installed on the heat exchange shaft. The spiral heat exchange fin is attached to the heat exchange chamber. A heat exchange cavity is opened inside the spiral heat exchange fin. The heat exchange cavity is adapted to the shape of the spiral heat exchange fin. The heat exchange cavity is respectively communicated with the smoke inlet channel and the smoke outlet channel. A smoke outlet pipe is arranged at the top of the heat exchange cylinder. The top end of the smoke outlet channel is communicated with the smoke outlet pipe.

[0030] The beneficial effect of adopting the above further scheme is that when the fuel burns, the heat exchange shaft rotates at a set speed. After the heat exchange shaft rotates, the conveying direction of the spiral heat exchange fin is downward, and then the external air flow entering the heat exchange cylinder is finally sent into the blower pipe, so as to realize the preheating of the intake air flow, and then realize the secondary utilization of the flue gas waste heat.

[0031] Through the setting of the spiral heat exchange fin and the heat exchange cavity, the recovery and utilization rate of the flue gas waste heat can be effectively improved.

[0032] Furthermore, a discharge valve is communicated with the bottom end of the fuel hopper, and a fuel adding pipe is communicated with the top end of the fuel hopper.

[0033] Furthermore, a single-chip microcomputer is installed on the furnace frame, and a gas joint and an electronic igniter cooperating with the combustion-supporting flame nozzle are respectively installed on the combustion furnace body.

[0034] The beneficial effect of adopting the above further scheme is that before the alternative fuel burns, the combustion-supporting flame nozzle sprays out a flame to heat the alternative fuel to a combustible state. When the alternative fuel is heated to a combustible state, the combustion-supporting flame nozzle is closed.

[0035] The beneficial effects of the present invention are:

[0036] 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 to enable the vibration combustion frame to reciprocate within the set stroke. After the vibration combustion frame reciprocates within the set stroke, it 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 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 toward 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.

[0037] 2. In the present invention, when the motor outputs a rotational speed, the disturbance shaft, on the one hand, undergoes an orbital motion at a set speed, and on the other hand, can undergo an autorotation motion at a set speed through the transmission connection setting of the outer gear and the inner gear ring. Through the cycle of the orbital and autorotational motions of the disturbance shaft, 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.

[0038] 3. In the present invention, when the fuel is burned, 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 of the spiral lifting mesh 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 the air.

[0039] 4. In the present invention, 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. 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 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 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

[0040] Figure 1 This is a schematic diagram of the overall structure of an alternative fuel high-efficiency combustion device of the present invention;

[0041] Figure 2 For the present invention Figure 1 Schematic structural diagram from another perspective;

[0042] Figure 3 For the present invention Figure 2 Schematic cross-sectional structure diagram;

[0043] Figure 4 For the present invention Figure 3 Locally enlarged schematic structural diagram at position A in the present invention;

[0044] Figure 5 For the present invention Figure 3 Locally enlarged schematic structural diagram at position B in the present invention;

[0045] Figure 6 For the present invention Figure 3 Locally enlarged schematic structural diagram at position C in the present invention;

[0046] Figure 7 For the present invention Figure 3 Locally enlarged schematic structural diagram at position D in the present invention;

[0047] Figure 8 Schematic structural diagram of the fuel hopper and heat exchange shaft of the present invention;

[0048] Figure 9 For the present invention Figure 8 Locally enlarged schematic structural diagram at position E in the present invention.

[0049] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0050] 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 combustion cylinder; 13. Circulation material port; 14. Spiral lifting mesh; 15. Auxiliary combustion flame nozzle; 16. Core shaft; 17. Upper guide shaft; 18. Missing gear; 19. Driving guide tooth plate; 20. Spring; 21. Lower guide shaft; 22. Turntable; 23. Disturbing shaft; 24. Inner gear ring; 25. Outer gear; 26. Disturbing claw; 27. Ash discharge valve; 28. Ash filtering hole; 29. Lifting pipe; 30. Fuel leakage port; 31. Conveying shaft; 32. Spiral conveyor blade; 33. Feeding pipe; 34. Smoke guiding pipe; 35. Smoke dividing ring; 36. Smoke guiding flow channel; 37. Fan shell; 38. Fan shaft; 39. Heat permeating hole; 40. Heat exchange cavity; 41. Air inlet; 42. Air supply pipe; 43. Heat exchange shaft; 44. Inlet smoke flow channel; 45. Exhaust smoke flow channel; 46. Spiral heat exchange fin; 47. Heat exchange chamber; 48. Smoke outlet pipe; 49. Discharge valve. Detailed implementation manners

[0051] The principles and features of the present invention will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0052] The present invention provides the following preferred embodiments

[0053] As Figure 1-9 shown, an efficient combustion device for alternative fuels includes a furnace frame 1, on which a single-chip microcomputer is installed, and further includes:

[0054] a combustion furnace body 2, a fuel hopper 3 and a heat exchange cylinder 4. The combustion furnace body 2, the fuel hopper 3 and the heat exchange cylinder 4 are all fixedly connected to the furnace frame 1. A motor 5 is installed on the furnace frame 1, and a flame nozzle 6 is communicated with the combustion furnace body 2;

[0055] The bottom end of the fuel hopper 3 is communicated with a discharge valve 49, and the top end of the fuel hopper 3 is communicated with a fuel filling pipe;

[0056] a guiding component, installed on the furnace frame 1 and linked with the motor 5, and a rotatable inner shaft 7 and a vibration combustion frame 8 that can reciprocate along the axis direction of the combustion furnace body 2 are connected to the guiding component;

[0057] The inner shaft 7 is rotationally connected to the vibration combustion frame 8;

[0058] The guiding component includes a core shaft 16 and an upper guiding shaft 17 rotatably connected to the furnace frame 1. 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 mesh with each other;

[0059] A second bevel gear is installed on the upper guiding shaft 17, and the second bevel gear is in transmission connection with the first bevel gear on the core shaft 16;

[0060] An upwardly open joint groove is fixedly formed in the upper part of the inner shaft 7, and a linkage section slidably connected to the joint groove is fixedly arranged on the core shaft 16. The cross-sections of the linkage section and the joint groove are both regular polygons;

[0061] A missing gear 18 is installed on the upper guiding shaft 17, a guiding tooth plate 19 is fixedly installed on the top surface of the vibration combustion frame 8, the missing gear 18 is in transmission connection with the guiding tooth plate 19, and a T-shaped guiding rod is installed on the vibration combustion frame 8. A spring 20 limited by the furnace frame 1 is sleeved on the T-shaped guiding rod.

[0062] When carrying out combustion operations, the motor 5 outputs a rotational speed at a set power. After the motor 5 outputs the rotational speed, through the settings of the missing gear 18, the guiding tooth plate 19 and the spring 20, the vibration combustion frame 8 can reciprocate within a set stroke. After the vibration combustion frame 8 reciprocates within the set stroke, it then drives the fuel tray 11, the middle shaft 9, the inner shaft 7 and the rotating frame 10 to synchronously reciprocate within the set stroke. And during the process that the fuel tray 11, the middle shaft 9, the inner shaft 7 and the rotating frame 10 synchronously reciprocate within the set stroke, the fuel tray 11, the middle shaft 9, the inner shaft 7 and the rotating frame 10 can also rotate at a set speed;

[0063] After the fuel tray 11 rotates, on the one hand, it enables the alternative fuel to be evenly distributed on the surface of the fuel tray 11, and on the other hand, it enables the combustibles on the fuel tray 11 to circulate towards 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 enabling the fuel to be fully burned, thus effectively reducing the fuel waste rate;

[0064] A middle shaft 9 is rotatably sleeved on the inner shaft 7, and a fuel disturbing assembly is installed at the bottom of the middle shaft 9;

[0065] The fuel disturbing assembly includes an internal gear ring 24 fixed on the rotating frame 10 and a rotating disc 22 fixed at the bottom end of the middle shaft 9. A group of disturbing shafts 23 distributed in a circumferential array are rotatably connected to the rotating disc 22. An external gear 25 drivingly connected to the internal gear ring 24 is fixedly installed at the top end of each disturbing shaft 23, and a disturbing claw 26 is fixedly installed at the bottom end of the disturbing shaft 23.

[0066] When the motor 5 outputs a rotational speed, on the one hand, the disturbing shaft 23 makes a revolution motion at a set speed, and on the other hand, through the driving connection between the external gear 25 and the internal gear ring 24, it can also make a self-rotation motion at a set speed. Through the cyclic occurrence of the revolution and self-rotation motions of the disturbing shaft 23, the alternative fuel on the fuel tray 11 can be cyclically stirred, and the alternative fuel can be cyclically exposed to the wind on the fuel tray 11, and the combustion heat of the alternative fuel can be fully volatilized, thereby effectively improving the combustion efficiency and burnout rate of the alternative fuel;

[0067] A rotating frame 10 is rotatably sleeved on the middle shaft 9, and both the rotating frame 10 and the middle shaft 9 are linked with the inner shaft 7;

[0068] A lower guide shaft 21 is rotatably connected to the vibration combustion frame 8. A first differential bevel gear and a second differential bevel gear are respectively installed on the lower guide shaft 21. First side bevel gears are installed on both the inner shaft 7 and the middle shaft 9. The first differential bevel gear is respectively drivingly connected to the two first side bevel gears. The two first bevel gears are symmetrically arranged with the axis of the lower guide shaft 21 as the axis. A second side bevel gear is installed on the rotating frame 10, and the second differential bevel gear is drivingly connected to the second side bevel gear.

[0069] During use, through the arrangement of the lower guide shaft 21 and the two first side bevel gears, the inner shaft 7 and the middle shaft 9 are in a coaxial reverse rotation state;

[0070] Through the arrangement of the second side bevel gear and the second differential bevel gear, the rotating frame 10 can rotate differentially with the inner shaft 7;

[0071] A fuel tray 11 is installed on the bottom surface of the rotating frame 10, a turning combustion cylinder 12 is installed at the axis position of the combustion furnace body 2, and a dust discharge valve 27 is communicated with the bottom end of the turning combustion cylinder 12;

[0072] A group of regularly distributed circulation material ports 13 are provided on the reburning cylinder 12. A spiral lifting mesh 14 is installed on the inner shaft 7. The spiral lifting mesh 14 has multiple groups of regularly distributed ash filter holes 28 that cooperate with the ash discharge valve 27. The spiral lifting mesh 14 is in close contact with the reburning cylinder 12. A group of regularly distributed combustion-supporting flame nozzles 15 are installed in the reburning cylinder 12.

[0073] 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 enables the alternative fuel to dissipate heat from 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 allows the heat of the alternative fuel to be fully exposed and improves the contact efficiency between the alternative fuel and air.

[0074] A fuel supply component is installed in the fuel hopper 3 and feeds fuel into the combustion furnace body 2;

[0075] The fuel supply component includes a lifting pipe 29 installed at the axial position of the fuel hopper 3. A group of fuel leakage 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, 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.

[0076] During 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 fed into the combustion furnace body 2 through the discharge pipe 33 and falls onto the fuel tray 11.

[0077] The smoke guide assembly includes a smoke duct 34, the smoke inlet port of the smoke duct 34 is connected to the inner cavity of the combustion furnace body 2, the smoke outlet port of the smoke duct 34 is connected to the smoke dividing ring 35, and 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 duct 34, and the inner wall of the fan shell 37 is rotatably connected to the 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 are opened inside the conveying shaft 31 and are connected to the smoke guide channel 36. The bottom end of the smoke guide channel 36 is connected to the heat exchange cylinder 4.

[0078] When the fuel is burning, the flue gas generated in the combustion furnace body 2 is driven by the fan blades and is eventually sent into the smoke guide channel 36. The flue gas sent into the smoke guide channel 36 is discharged through the heat-transmitting holes 39 and then 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, thereby realizing the primary utilization of the flue gas waste heat.

[0079] 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. The flue gas waste heat recovery component intakes air into the inner cavity of the combustion furnace body 2.

[0080] The flue gas waste heat recovery component includes a heat exchange chamber 47 opened in the heat exchange tube 4. A group of regularly distributed air inlets 41 are opened on the upper part of the heat exchange tube 4 and connected to the heat exchange chamber 47. The bottom of the heat exchange chamber 47 is connected to the 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 connected to the inner rotation of the heat exchange tube 4. The heat exchange shaft 43 is connected to the conveying shaft 31 through the second belt. The interior of the heat exchange shaft 43 is connected from top to bottom. A smoke inlet duct 44 and a smoke exhaust duct 45 are respectively provided, and 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 connected with the smoke inlet duct 44 and the smoke exhaust duct 45 respectively. A smoke outlet pipe 48 is provided on the top of the heat exchange cylinder 4, and the top of the smoke exhaust duct 45 is connected with the smoke outlet pipe 48.

[0081] 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 achieving preheating of the intake airflow and then realizing the secondary utilization of the waste heat of the flue gas;

[0082] 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.

[0083] 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 principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An efficient combustion device for alternative fuels, comprising a furnace frame (1), characterized in that, Further comprising: A combustion furnace body (2), a fuel hopper (3) and a heat exchange cylinder (4), wherein the combustion furnace body (2), the fuel hopper (3) and the heat exchange cylinder (4) are all fixedly connected to the furnace frame (1), a motor (5) is installed on the furnace frame (1), and a flame nozzle (6) is communicated with the combustion furnace body (2); A guiding component, installed on the furnace frame (1) and linked with the motor (5), a rotatable inner shaft (7) and a vibration combustion frame (8) capable of reciprocatingly moving along the axis direction of the combustion furnace body (2) are connected to the guiding component, the inner shaft (7) is rotationally connected to the vibration combustion frame (8), a middle shaft (9) is rotationally sleeved on the inner shaft (7), a fuel disturbance component is installed at the bottom of the middle shaft (9), a rotating frame (10) is rotationally sleeved on the middle shaft (9), both the rotating frame (10) and the middle shaft (9) are linked with the inner shaft (7), a fuel tray (11) is installed on the bottom surface of the rotating frame (10), a turning combustion cylinder (12) is installed at the axis position of the combustion furnace body (2), a group of regularly distributed circulating material openings (13) are formed in the turning combustion cylinder (12), a spiral lifting mesh (14) is installed on the inner shaft (7), the spiral lifting mesh (14) is attached to the turning combustion cylinder (12), and a group of regularly distributed combustion assisting flame nozzles (15) are installed in the turning combustion cylinder (12); A fuel supply component, installed in the fuel hopper (3) and feeding materials into the combustion furnace body (2); A flue gas waste heat recovery component, installed on the heat exchange cylinder (4) and used for realizing 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); The guiding component includes a core shaft (16) and an upper guiding shaft (17) rotationally connected to the furnace frame (1), first bevel gears are installed at the output shaft end of the motor (5) and on the core shaft (16), the two first bevel gears mesh with each other, a second bevel gear is installed on the upper guiding shaft (17), the second bevel gear is in transmission connection with the first bevel gear on the core shaft (16), a top-opened connecting groove is fixedly formed in the upper part of the inner shaft (7), a linkage section slidably connected with the connecting groove is fixedly arranged on the core shaft (16), the cross sections of the linkage section and the connecting groove are both regular polygons, a missing gear (18) is installed on the upper guiding shaft (17), a guiding tooth plate (19) is fixedly installed on the top surface of the vibration combustion frame (8), the missing gear (18) is in transmission connection with the guiding tooth plate (19), a T-shaped guiding rod is installed on the vibration combustion frame (8), and a spring (20) limited by the furnace frame (1) is sleeved on the T-shaped guiding rod; A lower guiding shaft (21) is rotationally connected to the vibration combustion frame (8), a first differential bevel gear and a second differential bevel gear are respectively installed on the lower guiding shaft (21), first side bevel gears are installed on both the inner shaft (7) and the middle shaft (9), the first differential bevel gear is respectively in transmission connection with the two first side bevel gears, the two first bevel gears are symmetrically arranged with the axis of the lower guiding shaft (21) as the axis, a second side bevel gear is installed on the rotating frame (10), and the second differential bevel gear is in transmission connection with the second side bevel gear; The fuel disturbance assembly includes an internal gear ring (24) fixed to the rotating frame (10) and a turntable (22) fixed to the bottom end of the central shaft (9). A group of disturbance shafts (23) distributed in a circumferential array are rotatably connected to the turntable (22). An external gear (25) drivingly connected to the internal gear ring (24) is fixedly installed at the top end of each disturbance shaft (23), and a disturbance claw (26) is fixedly installed at the bottom end of the disturbance shaft (23).

2. The high-efficiency combustion device for alternative fuels according to claim 1, characterized in that, A dust discharge valve (27) is communicated with the bottom end of the turning and burning cylinder (12), and a plurality of regularly distributed ash filtering holes (28) matched with the dust discharge valve (27) are formed in the spiral lifting wire mesh (14).

3. The high-efficiency combustion device for alternative fuels according to claim 2, characterized in that, The fuel supply component includes a lifting pipe (29) installed at the axis position of the fuel hopper (3). A group of fuel leakage ports (30) are formed at the bottom of the lifting pipe (29) corresponding to the inner side of the fuel hopper (3). A conveying shaft (31) is rotatably connected to the inner wall of the lifting pipe (29). The conveying shaft (31) is drivingly 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 communicated with a feeding pipe (33). The other end of the feeding pipe (33) is fixedly communicated with the combustion furnace body (2). A flue gas diversion assembly is installed on the upper part of the lifting pipe (29).

4. An alternative fuel high-efficiency combustion device according to claim 3, characterized in that, The flue gas diversion assembly includes a smoke guiding pipe (34). The smoke inlet port of the smoke guiding pipe (34) is communicated with the inner cavity of the combustion furnace body (2). The smoke outlet port of the smoke guiding pipe (34) is communicated with a smoke distributing ring (35). A smoke guiding flow channel (36) with two open ends is fixedly formed inside the conveying shaft (31). The inner cavity of the smoke distributing ring (35) is rotationally communicated with the smoke guiding flow channel (36). A fan shell (37) is installed in the middle of the smoke guiding pipe (34). A fan shaft (38) is rotatably connected to the inner wall of the fan shell (37). A group of fan blades are installed on the fan shaft (38) corresponding to the inner side of the fan shell (37). A group of regularly distributed heat permeating holes (39) communicated with the smoke guiding flow channel (36) are formed inside the conveying shaft (31). The bottom end of the smoke guiding flow channel (36) is communicated with the heat exchange cylinder (4).

5. An efficient combustion device for alternative fuels according to claim 4, characterized in that, The flue gas waste heat recovery component includes a heat exchange chamber (47) opened in a heat exchange cylinder (4). A set of regularly distributed air inlets (41) communicating with the heat exchange chamber (47) are opened at the upper part of the heat exchange cylinder (4). A blower duct (42) is communicated with the bottom of the heat exchange chamber (47). The other end of the blower duct (42) is communicated with the inner cavity of a combustion furnace body (2). A heat exchange shaft (43) is rotatably connected inside the heat exchange cylinder (4). The heat exchange shaft (43) is in transmission connection with a conveying shaft (31) through a second belt. A smoke inlet channel (44) and a smoke outlet channel (45) are respectively opened in the heat exchange shaft (43) from top to bottom. A spiral heat exchange fin (46) is installed on the heat exchange shaft (43). The spiral heat exchange fin (46) is attached to the heat exchange chamber (47). A heat exchange cavity (40) is opened inside the spiral heat exchange fin (46). The heat exchange cavity (40) is adapted to the shape of the spiral heat exchange fin (46). The heat exchange cavity (40) is respectively communicated with the smoke inlet channel (44) and the smoke outlet channel (45). A smoke outlet pipe (48) is arranged at the top of the heat exchange cylinder (4). The top end of the smoke outlet channel (sk) is communicated with the smoke outlet pipe (48).

6. An alternative fuel high-efficiency combustion device according to claim 5, characterized in that, The bottom end of the fuel hopper (3) is communicated with a discharge valve (49). The top end of the fuel hopper (3) is communicated with a fuel adding pipe.

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

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