High-efficiency environment-friendly small solid waste pyrolysis incineration device

Abstract

The present application relates to a kind of high-efficient environment-friendly small solid waste pyrolysis incinerator;Drying cylinder, pyrolysis cylinder and combustion cylinder outer wall are respectively provided with air supply cavity, smoke exhaust cavity and oxygen cavity, the both sides of smoke exhaust cavity are respectively connected with flue gas treatment cylinder and smoke exhaust pipe, flue gas collection combustion mechanism is installed in flue gas treatment cylinder, one end of flue gas collection combustion mechanism is communicated with the top of combustion cylinder, the other end of flue gas collection combustion mechanism is communicated with the outer end inner cavity of flue gas treatment cylinder, air heating cavity is provided on the outside of smoke exhaust pipe, air heating cavity is respectively communicated with air supply cavity and oxygen cavity by air supply pipe, air inlet is opened in the outer wall of combustion cylinder, rotating oxygen combustion mechanism is arranged in the inner cavity of combustion cylinder, feeding cylinder is communicated with combustion cylinder by flue gas recovery pipeline;It can quickly handle garbage, and improve environmental health level.

Description

Technical Field

[0001] This invention relates to the field of solid waste treatment in environmental protection, and specifically to a high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device. Background Technology

[0002] With the acceleration of global urbanization and the improvement of residents' living standards, the amount of solid waste generated is increasing year by year. Among various waste treatment methods, incineration has become one of the mainstream waste treatment methods due to its advantages such as significant volume reduction, high degree of harmlessness, and energy recovery. Small solid waste incinerators, with their small footprint, low investment cost, and flexible and convenient operation, have been widely used in areas with relatively low waste generation, such as rural towns, small communities, industrial parks, scenic spots, and various small enterprises and institutions, effectively avoiding the pollution caused by waste accumulation.

[0003] Traditional small-scale incinerators rely primarily on simple combustion methods for waste treatment, resulting in low incineration efficiency and the generation of large amounts of harmful gases and smoke, posing a serious threat to the surrounding environment and residents' health. Their shortcomings are mainly reflected in the following aspects: First, incomplete combustion and low energy utilization. Many small solid waste incinerators on the market have inadequate furnace structure design and imperfect air supply systems, leading to insufficient contact between waste and oxygen during combustion, resulting in incomplete combustion. The residue produced after waste incineration still contains a significant amount of combustible components, wasting energy and increasing the difficulty and cost of subsequent residue treatment. Second, pollutant emissions are difficult to control effectively. Although most existing small solid waste incinerators are equipped with flue gas purification devices, pollutant emissions still exceed standards during actual operation, failing to meet increasingly stringent environmental standards. Many small incinerators, due to poor furnace sealing and low temperature control precision, allow toxic gases produced during combustion to be directly released into the atmosphere, posing a serious threat to the ecological environment and human health. Secondly, they have poor adaptability and struggle to handle complex waste compositions. As waste composition becomes increasingly complex, existing small-scale solid waste incinerators exhibit poor adaptability when processing different types of waste. Many small incinerators are designed for specific types of waste, and they often struggle to effectively process waste with complex compositions, high moisture content, and large fluctuations in calorific value.

[0004] Therefore, although traditional small solid waste incinerators are widely used, they have drawbacks such as incomplete combustion, difficult emission control, low automation, poor adaptability, and high cost. These drawbacks seriously restrict their large-scale promotion and application. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a highly efficient and environmentally friendly small-scale solid waste pyrolysis incineration device that features a simple structure, convenient operation, complete combustion, precise emission control, energy saving and environmental protection, high degree of automation, strong adaptability to different types of waste, low cost, and a simple, controllable, and easy-to-operate method, thus possessing broad market prospects.

[0006] The technical solution of this invention is implemented as follows: A high-efficiency and environmentally friendly small solid waste pyrolysis incineration device includes a feeding cylinder. A drying cylinder, a pyrolysis cylinder, and a combustion cylinder are arranged sequentially below the feeding cylinder. A material feeding buffer mechanism is provided inside the drying cylinder. An air supply chamber, a flue gas exhaust chamber, and an oxygenation chamber are respectively provided on the outer walls of the drying cylinder, the pyrolysis cylinder, and the combustion cylinder. The two sides of the flue gas exhaust chamber are respectively connected to a flue gas treatment cylinder and a flue gas pipe. A flue gas collection and combustion mechanism is installed inside the flue gas treatment cylinder. One end of the flue gas collection and combustion mechanism is connected to the pyrolysis cylinder, and the other end of the flue gas collection and combustion mechanism is connected to the inner cavity of the outer end of the flue gas treatment cylinder. An air heating chamber is provided outside the flue gas pipe. The air heating chamber is connected to the air supply chamber and the oxygenation chamber through an air supply pipe. An air inlet is opened on the outer wall of the combustion cylinder. A rotating oxygenation combustion mechanism is provided in the inner cavity of the combustion cylinder. The feeding cylinder is connected to the combustion cylinder through a flue gas recovery pipe.

[0007] Furthermore, one side of the feed cylinder is connected to the material conveying bin, and a hydraulic push rod is provided at the outer end of the material conveying bin. The output end of the hydraulic push rod is connected to the push plate installed inside the material conveying bin. A feed inlet is provided at the top of the material conveying bin, and a loading bucket is installed on the feed inlet. The loading bucket cooperates with the conveying auger or material lifting frame through the feeding port. A leak-proof air supply bin with a bottom air supply pipe is provided on the outside of the material conveying bin. The leak-proof air supply bin is connected to the material conveying bin through the air supply hole.

[0008] Furthermore, a feeding insulation sleeve is provided on the outside of the feeding cylinder, the top of the flue gas recovery pipe is connected to the upper side of the feeding cylinder, the bottom of the flue gas recovery pipe is connected to the lower side of the combustion cylinder, a drying insulation sleeve is fitted on the outside of the drying cylinder, a blower connected to the air supply chamber is installed on the upper side of the drying insulation sleeve, and the material dropping buffer mechanism includes a drive gear provided on the outside of the drying insulation sleeve, the drive gear meshes with a first driven wheel, the first driven wheel meshes with a second driven wheel, the first driven wheel is connected to a first baffle roller installed in the drying cylinder, and the second driven wheel is connected to a second baffle roller installed in the drying cylinder.

[0009] Furthermore, a combustion insulation sleeve is provided on the outside of the pyrolysis cylinder and the combustion cylinder, a material discharge buffer plate is provided at the bottom of the pyrolysis cylinder, a treatment insulation sleeve is fitted on the outside of the flue gas treatment cylinder, and the flue gas collection and combustion mechanism includes a flue gas collection bend pipe provided on the inside of the material discharge buffer plate. The flue gas collection bend pipe is connected to the diversion exhaust pipe through a number of dispersed combustion pipes and diffuser pipes connected end to end. The end of the diversion exhaust pipe is connected to the inner cavity of the flue gas treatment cylinder.

[0010] Furthermore, the flue gas treatment cylinder is located in the middle of one side of the exhaust chamber, the exhaust pipe is located in the lower middle part of the other side of the exhaust chamber, and an air heating sleeve is provided on the outside of the exhaust pipe.

[0011] Furthermore, the air heating chamber is connected to the lower middle part of the air supply chamber through an air supply pipe, and the air heating chamber is connected to the middle part of the oxygenation chamber through an air supply pipe. A sealed opening and closing cover is provided at the top of the feed cylinder.

[0012] Furthermore, the rotary oxygen-adding combustion mechanism includes a rotating frame installed inside the combustion chamber, a funnel-shaped secondary air distribution chamber installed on the upper part of the rotating frame, air distribution holes opened on the outer wall of the secondary air distribution chamber, a rotating shaft provided in the middle of the rotating frame, and the bottom of the rotating shaft connected to the output end of a reduction motor installed on the outer side of the bottom of the combustion chamber through a bearing.

[0013] Furthermore, a waste recycling cylinder is provided at the bottom of the combustion cylinder, an inspection port is provided on one side of the upper part of the waste recycling cylinder, and a discharge port is provided at the bottom of the waste recycling cylinder.

[0014] Furthermore, an ignition port is provided on one side of the middle of the combustion cylinder, an observation window is provided on one side of the pyrolysis cylinder, and a support is installed below the combustion cylinder.

[0015] Furthermore, the combustion expansion pipe is provided with a secondary oxygenation hole, which is connected to an external secondary oxygenation fan through a secondary oxygenation pipe.

[0016] The present invention has the following positive effects: 1. This invention employs a multi-stage progressive treatment method, significantly improving combustion completeness. It utilizes a three-stage progressive treatment structure of drying, pyrolysis, and combustion, fundamentally solving the problem of incomplete combustion in traditional small incinerators. After entering the device, the waste first passes through a material feeding buffer mechanism in the drying drum, where the damp material is thoroughly dried and slowly and evenly dispersed, achieving initial drying and dehydration of the waste and reducing the difficulty of subsequent pyrolysis. Upon entering the pyrolysis drum, the pyrolysis reaction is completed under high temperature, decomposing complex organic matter into combustible gas and carbon black. Finally, the waste enters the combustion drum, where a rotating oxygen-adding combustion mechanism ensures thorough mixing of the combustible gas and oxygen, resulting in complete combustion at high temperature.

[0017] 2. This invention achieves full-process flue gas control, ensuring precise and controllable pollutant emissions. Addressing the shortcomings of traditional incinerators that often exceed pollutant emission standards, this device implements full-process flue gas control through flue gas recovery and treatment, followed by complete combustion. The combustible flue gas generated from pyrolysis is introduced into the flue gas treatment cylinder for re-combustion via a flue gas collection and combustion mechanism. After multi-stage dispersion and diffusion through several dispersion combustion tubes and diffusion tubes, complete combustion of the flue gas is effectively achieved. Simultaneously, an air heating chamber located outside the exhaust pipe can recover heat from the flue gas for preheating the air in the air supply chamber and oxygenation chamber, improving energy utilization.

[0018] 3. This invention achieves adaptive processing, significantly enhancing its adaptability to complex waste. Through modular structural design and intelligent control system, it achieves efficient processing of waste with complex compositions. The material feeding buffer mechanism inside the drying cylinder allows for external speed control of the drive gear, automatically adjusting the feeding speed according to the moisture content of the waste to ensure drying effect. Parameters such as temperature and air volume in the pyrolysis cylinder and combustion cylinder can be adjusted in real time through an external control system to adapt to the processing needs of waste with different calorific values. Simultaneously, the leak-proof make-up air chamber equipped with the device can perform positive pressure make-up air operation during material addition, preventing flue gas from overflowing from the material conveying chamber, improving the ability to fully enclose and recover flue gas, achieving stable and efficient processing, and solving the problem of poor adaptability of traditional incinerators to waste composition.

[0019] 3. This invention has low cost and uses a vertical structure, saving space. Simultaneously, due to improved combustion efficiency, the waste volume reduction rate is significantly increased, the combustible content of the residue after combustion is low, and the heat generated during combustion can be recovered for energy recycling. The heat generated during combustion can be used to preheat the combustion air through an air heating chamber, reducing energy consumption.

[0020] 4. This invention is adaptable to diverse scenarios. Due to its smaller overall footprint compared to large-scale waste treatment devices and waste incineration plants, it can flexibly adapt to dispersed environments, filling the gaps in the limitations imposed by large-scale waste incineration plants on site selection and investment. It can cover scattered waste-generating areas such as rural towns, small communities, and industrial parks. With its advantages of small footprint and easy operation, this device can be directly deployed at the source of waste generation, achieving on-site waste treatment and avoiding the costs and secondary pollution risks of long-distance waste transportation. It can quickly process domestic waste and improve environmental sanitation.

[0021] 5. This invention is easy to operate and maintain, reducing reliance on manual labor. It employs automated control of feeding, drying, pyrolysis, and combustion processes. Routine maintenance only requires periodic cleaning of residue and inspection of seals. Compared to traditional incinerators, it significantly reduces labor costs and technical barriers, making it suitable for promotion and application in rural and township areas with relatively weak technical capabilities. Complete combustion of waste reduces emissions of greenhouse gases such as carbon dioxide, effectively improves environmental sanitation, protects residents' health, and avoids the health risks associated with open-air waste dumping that can breed pathogens. Through a sealed design and a highly efficient flue gas purification system, odor and harmful gas emissions can be effectively controlled, reducing secondary pollution during waste treatment. Attached Figure Description

[0022] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention.

[0023] Figure 2 This is the second three-dimensional structural schematic diagram of the present invention.

[0024] Figure 3 This is one of the internal structural diagrams of the present invention.

[0025] Figure 4 This is the second schematic diagram of the internal structure of the present invention.

[0026] Figure 5 This is the third schematic diagram of the internal structure of the present invention.

[0027] Figure 6 This is the fourth schematic diagram of the internal structure of the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the following description of the invention, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. The term "connection" simply indicates a connection between devices and has no special meaning.

[0030] like Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, a high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device includes a feeding cylinder 43. Below the feeding cylinder 43, a drying cylinder 44, a pyrolysis cylinder 51, and a combustion cylinder 28 are sequentially arranged. A material feeding buffer mechanism is installed inside the drying cylinder 44. An air supply chamber 29, a flue gas exhaust chamber 31, and an oxygen supply chamber 27 are respectively provided on the outer walls of the drying cylinder 44, the pyrolysis cylinder 51, and the combustion cylinder 28. The flue gas exhaust chamber 31 is connected to a flue gas treatment cylinder 47 and a flue gas pipe 59 on both sides. An oxygen supply chamber 27 is installed inside the flue gas treatment cylinder 47. The combustion chamber has a flue gas collection and combustion mechanism. One end of the flue gas collection and combustion mechanism is connected to the pyrolysis cylinder 51, and the other end of the flue gas collection and combustion mechanism is connected to the inner cavity of the outer end of the flue gas treatment cylinder 47. An air heating chamber 30 is provided on the outside of the exhaust pipe 59. The air heating chamber 30 is connected to the air supply chamber 29 and the oxygen supply chamber 27 through the air supply pipe 11. An air inlet 34 is opened on the outer wall of the combustion cylinder 28. A rotary oxygen supply and combustion mechanism is provided in the inner cavity of the combustion cylinder 28. The feed cylinder 43 is connected to the combustion cylinder 28 through the flue gas recovery pipe 14.

[0031] One side of the feed cylinder 43 is connected to the material conveying chamber 16. A hydraulic push rod 17 is provided at the outer end of the material conveying chamber 16. The output end of the hydraulic push rod 17 is connected to the push plate 42 installed inside the material conveying chamber 16. A feed inlet is provided at the top of the material conveying chamber 16. A loading barrel 23 is installed on the feed inlet. The loading barrel 23 cooperates with the conveying auger or material lifting frame 13 through the feeding port 24. A leak-proof air supply chamber 18 with a bottom air supply pipe 40 is provided on the outside of the material conveying chamber 16. The leak-proof air supply chamber 18 is connected to the material conveying chamber 16 through the air supply hole 41. A feeding insulation sleeve 4 is provided on the outside of the feeding cylinder 43. The top of the flue gas recovery pipe 14 is connected to the upper side of the feeding cylinder 43, and the bottom of the flue gas recovery pipe 14 is connected to the lower side of the combustion cylinder 28. A drying insulation sleeve 3 is fitted on the outside of the drying cylinder 44. A blower 19 connected to the air supply chamber 29 is installed on the upper side of the drying insulation sleeve 3. The material dropping buffer mechanism includes a drive gear 21 provided on the outside of the drying insulation sleeve 3. The drive gear 21 meshes with the first driven wheel 20. The first driven wheel 20 meshes with the second driven wheel 22. The first driven wheel 20 is connected to the first baffle roller 30 installed in the drying cylinder 44, and the second driven wheel 22 is connected to the second baffle roller 31 installed in the drying cylinder 44.

[0032] A combustion insulation sleeve 2 is provided on the outside of the pyrolysis cylinder 51 and the combustion cylinder 28. A material discharge buffer plate 45 is provided at the bottom of the pyrolysis cylinder 51. A treatment insulation sleeve 12 is fitted on the outside of the flue gas treatment cylinder 47. The flue gas collection and combustion mechanism includes a flue gas collection bend 38 provided inside the material discharge buffer plate 45. The flue gas collection bend 38 is connected to a diversion exhaust pipe 46 through a number of dispersed combustion pipes 37 and diffuser pipes 36 connected end to end. The end of the diversion exhaust pipe 46 is connected to the inner cavity of the flue gas treatment cylinder 47. The flue gas treatment cylinder 47 is located in the middle of one side of the exhaust chamber 31. The exhaust pipe 59 is located in the lower middle part of the other side of the exhaust chamber 31. An air heating sleeve 10 is provided on the outside of the exhaust pipe 59.

[0033] The air heating chamber 30 is connected to the lower middle part of the air supply chamber 29 via the air supply pipe 11, and the air heating chamber 30 is connected to the middle part of the oxygen supply chamber 27 via the air supply pipe 11. A sealing and opening cover 15 is provided on the top of the feed cylinder 43. The rotary oxygen supply combustion mechanism includes a rotating frame 26 installed inside the combustion cylinder 28. A funnel-shaped secondary air distribution chamber 33 is installed on the upper part of the rotating frame 26. The outer wall of the secondary air distribution chamber 33 has air distribution holes 35. A rotating shaft 25 is provided in the middle of the rotating frame 26. The bottom of the rotating shaft 25 is connected to the output end of the reduction motor 6 installed on the outer side of the bottom of the combustion cylinder 28 via a bearing. A waste recovery cylinder 39 is provided at the bottom of the combustion cylinder 28. An inspection port 5 is provided on one side of the upper part of the waste recovery cylinder 39, and a discharge port 7 is provided at the bottom of the waste recovery cylinder 39. An ignition port 9 is provided on one side of the middle part of the combustion cylinder 28, an observation window 8 is provided on one side of the pyrolysis cylinder 51, and a bracket 1 is installed below the combustion cylinder 28. The secondary oxygenation port 81 of the expansion pipe 36 is connected to an external secondary oxygenation fan through the secondary oxygenation pipe.

[0034] In practical operation, the high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device of this invention mainly consists of five parts: a feeding system, a drying pyrolysis system, a combustion system, a flue gas treatment system, and a control system. During the assembly stage, modular assembly must be strictly carried out according to the structural design. The feeding cylinder 43, drying cylinder 44, pyrolysis cylinder 51, and combustion cylinder 28 are sequentially fixed and connected from top to bottom, ensuring tight sealing at the flange connections of each cylinder section to prevent flue gas leakage. Externally, corresponding insulated sleeves 4 (feeding), 3 (drying), and 2 (combustion) are fitted to reduce heat loss.

[0035] A leak-proof make-up air chamber 18 is installed outside the material conveying chamber 16, and the make-up air pipe 40 is connected to an external make-up air fan to ensure stable make-up air pressure. The blower 19 is a variable frequency centrifugal fan, connected to the inner cavity of the air supply chamber 29, and then connected to the air heating chamber 30 via the air supply pipe 11, and further connected to the oxygen supply chamber 27 via the air supply pipe 11. This achieves preheating of the oxygen supply and combustion air. The geared motor 6 is an explosion-proof type, connected to the rotating shaft 25 via a coupling to ensure stable rotation speed of the rotating frame 26.

[0036] During actual operation, the system is equipped with an automated control system that connects to temperature sensors, pressure transmitters, and flue gas online monitoring instruments. This system monitors parameters such as the outlet temperature of the drying drum, the internal pressure of the pyrolysis drum, and the concentration of harmful components in the flue gas from the combustion drum in real time. It also links with a host computer monitoring platform to enable remote data viewing and parameter adjustment.

[0037] The waste feeding and pretreatment process of this invention is as follows: A suitable feeding method is selected based on the type of waste. For loose household waste, the waste is fed from the loading bin 23 into the material conveying chamber 16 via the material lifting frame 13; for viscous kitchen waste, a conveying auger pushes it to the feeding port 24. During the feeding process, the leak-proof air supply chamber 18 continuously supplies air, maintaining a slight positive pressure inside the material conveying chamber 16 to effectively prevent backflow of high-temperature flue gas. Then, the hydraulic push rod 17 is activated, automatically adjusting the pushing speed of the push plate 42 according to the amount of waste in the combustion cylinder 28. The sealed opening and closing cover 15 at the top of the feeding cylinder 43 remains closed during operation.

[0038] After the waste enters the drying drum 44, it is blocked inside the drying drum by the first baffle roller 30 and the second baffle roller 31. The heat from the combustion drum after the auxiliary fuel is ignited is transferred upward to the drying drum 44 to dry the waste containing moisture. After the preset drying effect is achieved, the material feeding buffer mechanism is activated. The drive gear 21 drives the first driven wheel 20 and the second driven wheel 22 to rotate synchronously, causing the first baffle roller 30 and the second baffle roller 31 to rotate in opposite directions, so that the dried waste is slowly fed out.

[0039] After drying, the waste is slowly fed into the pyrolysis cylinder 51 via the feed buffer plate 45. Inside the pyrolysis cylinder, an oxygen-deficient environment is maintained by radiant heating from the combustion cylinder 28. The organic matter in the waste undergoes thermal decomposition, breaking down large molecular chains to generate combustible gases and solid charcoal slag. The combustible gases produced by pyrolysis are recovered and re-burned through the flue gas collection bend 38, while the charcoal slag falls into the combustion cylinder 28 by gravity.

[0040] After the charcoal slag enters the combustion chamber 28, it falls onto the secondary air distribution chamber 33 of the rotating frame 26. The reduction motor 6 drives the rotating frame 26 to rotate slowly, ensuring even distribution of the charcoal slag. The oxygenation chamber 27 sends preheated air into the combustion chamber 28 through the air inlet 34, where it mixes thoroughly with the charcoal slag and burns completely at a high temperature of 850-1000℃. Simultaneously, the flue gas entering the flue gas collection bend 38 further disperses and fully combusts the pyrolysis combustible gas through the dispersion combustion pipe 37 and the diffuser pipe 36. This portion of combustible gas drawn from the pyrolysis chamber is dispersed into a small airflow in the dispersion combustion pipe 37, and further aided in combustion and diffusion through the diffuser pipe 37. The secondary oxygenation port 81 can supplement a small amount of oxygen as needed from an external secondary oxygenation fan, ensuring that the harmful components in this portion of the gas are completely decomposed and fully combusted in the flue gas treatment chamber 47.

[0041] After complete combustion, the exhaust gas is discharged through the tail end of the diversion exhaust pipe 46, and then enters the exhaust chamber 31 through the flue gas treatment cylinder 47, before being discharged through the exhaust pipe 59. The air heating chamber 30 transfers heat to the cold air in the air supply pipe 11 for preheating treatment. The solid residue after combustion falls into the waste recycling cylinder 39 and is discharged through the discharge port 7. The residue can be used as roadbed filling material or brick making raw material, achieving waste reduction and resource utilization.

[0042] After each day's operation, open the inspection port 5 to clean the ash accumulated on the inner wall of the combustion chamber 28. The heat generated during combustion dries the water-containing waste in the drying chamber 44, thus achieving heat recycling. During combustion, some flue gas will flow into the feed chamber 43, and the flue gas recovery pipe 14 will directly recover this part of the flue gas and send it back to the combustion chamber 28 for re-combustion.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device, comprising a feed cylinder (43), characterized in that: Below the feed cylinder (43), a drying cylinder (44), a pyrolysis cylinder (51), and a combustion cylinder (28) are arranged in sequence. A material feeding buffer mechanism is provided inside the drying cylinder (44). An air supply chamber (29), a smoke exhaust chamber (31), and an oxygen supply chamber (27) are respectively provided on the outer walls of the drying cylinder (44), the pyrolysis cylinder (51), and the combustion cylinder (28). The two sides of the smoke exhaust chamber (31) are connected to the flue gas treatment cylinder (47) and the smoke exhaust pipe (59) respectively. A flue gas collection and combustion mechanism is installed inside the flue gas treatment cylinder (47). One end is connected to the pyrolysis cylinder (51), and the other end of the flue gas collection and combustion mechanism is connected to the inner cavity of the outer end of the flue gas treatment cylinder (47). An air heating chamber (30) is provided on the outside of the exhaust pipe (59). The air heating chamber (30) is connected to the air supply chamber (29) and the oxygen supply chamber (27) through the air supply pipe (11). An air inlet hole (34) is opened on the outer wall of the combustion cylinder (28). A rotary oxygen supply and combustion mechanism is provided in the inner cavity of the combustion cylinder (28). The feed cylinder (43) is connected to the combustion cylinder (28) through the flue gas recovery pipe (14).

2. The high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device according to claim 1, characterized in that: One side of the feed cylinder (43) is connected to the material conveying bin (16). A hydraulic push rod (17) is provided at the outer end of the material conveying bin (16). The output end of the hydraulic push rod (17) is connected to the push plate (42) installed in the material conveying bin (16). The top of the material conveying bin (16) is provided with a feed inlet. A loading bin (23) is installed on the feed inlet. The loading bin (23) is connected to the conveying auger or the material lifting frame (13) through the feeding port (24). A leak-proof air supply bin (18) with a bottom air supply pipe (40) is provided on the outside of the material conveying bin (16). The leak-proof air supply bin (18) is connected to the material conveying bin (16) through the air supply hole (41).

3. The high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device according to claim 1, characterized in that: The feed cylinder (43) is provided with a feed insulation sleeve (4) on the outside. The top of the flue gas recovery pipe (14) is connected to the upper side of the feed cylinder (43), and the bottom of the flue gas recovery pipe (14) is connected to the lower side of the combustion cylinder (28). The drying cylinder (44) is fitted with a drying insulation sleeve (3) on the outside. A blower (19) connected to the air supply chamber (29) is installed on the upper side of the drying insulation sleeve (3). The material dropping buffer mechanism includes a drive gear (21) provided on the outside of the drying insulation sleeve (3). The drive gear (21) meshes with the first driven wheel (20). The first driven wheel (20) meshes with the second driven wheel (22). The first driven wheel (20) is connected to the first baffle roller (30) installed in the drying cylinder (44). The second driven wheel (22) is connected to the second baffle roller (31) installed in the drying cylinder (44).

4. The high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device according to claim 1, characterized in that: The pyrolysis cylinder (51) and the combustion cylinder (28) are provided with combustion insulation sleeves (2) on the outside. The bottom of the pyrolysis cylinder (51) is provided with a material drop buffer plate (45). The outside of the flue gas treatment cylinder (47) is fitted with a treatment insulation sleeve (12). The flue gas collection and combustion mechanism includes a flue gas collection bend (38) provided inside the material drop buffer plate (45). The flue gas collection bend (38) is connected to the diversion exhaust pipe (46) through a number of dispersed combustion pipes (37) and diffuser pipes (36) connected end to end. The end of the diversion exhaust pipe (46) is connected to the inner cavity of the flue gas treatment cylinder (47).

5. The high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device according to claim 1, characterized in that: The flue gas treatment cylinder (47) is located in the middle of one side of the flue gas chamber (31), and the flue gas pipe (59) is located in the lower middle part of the other side of the flue gas chamber (31). An air heating sleeve (10) is provided on the outside of the flue gas pipe (59).

6. The high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device according to claim 1, characterized in that: The air heating chamber (30) is connected to the lower middle part of the air supply chamber (29) through the air supply pipe (11), and the air heating chamber (30) is connected to the middle part of the oxygen supply chamber (27) through the air supply pipe (11). A sealed opening and closing cover (15) is provided on the top of the feed cylinder (43).

7. The high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device according to claim 1, characterized in that: The rotary oxygen-adding combustion mechanism includes a rotating frame (26) installed inside the combustion chamber (28). A funnel-shaped secondary air distribution chamber (33) is installed on the upper part of the rotating frame (26). An air distribution hole (35) is opened on the outer wall of the secondary air distribution chamber (33). A rotating shaft (25) is provided in the middle of the rotating frame (26). The bottom of the rotating shaft (25) is connected to the output end of a reduction motor (6) installed on the outer side of the bottom of the combustion chamber (28) through a bearing.

8. The high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device according to claim 1, characterized in that: The combustion cylinder (28) is provided with a waste recycling cylinder (39) at the bottom. An inspection port (5) is provided on one side of the upper part of the waste recycling cylinder (39), and a discharge port (7) is provided at the bottom of the waste recycling cylinder (39).

9. The high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device according to claim 1, characterized in that: An ignition port (9) is provided on one side of the middle of the combustion cylinder (28), an observation window (8) is provided on one side of the pyrolysis cylinder (51), and a bracket (1) is installed below the combustion cylinder (28).

10. The high-efficiency and environmentally friendly small-scale solid waste pyrolysis incineration device according to claim 4, characterized in that: The expansion pipe (36) is provided with a secondary oxygenation hole (81), which is connected to an external secondary oxygenation fan through the secondary oxygenation pipe.

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