Small-sized household garbage incineration system based on plasma coupling treatment

Abstract

This invention discloses a small-scale municipal solid waste incineration system based on plasma coupling, comprising an incinerator body, a feeding assembly, a plasma ignition torch, a propulsion assembly, and a flue gas outlet. The incinerator body has a feeding inlet at one end and a flue gas outlet at the other end. A feeding assembly is installed at the feeding inlet, and a propulsion assembly is located near the feeding inlet on one side of the incinerator body. Several plasma ignition torches are mounted on the incinerator body. This invention uses plasma ignition torches as the core ignition component. Plasma possesses high temperature and high activity characteristics, enabling rapid ignition of waste, solving the problems of slow ignition speed and unstable ignition in traditional ignition methods. Simultaneously, the plasma ignition torches are respectively positioned on the furnace walls of the first and second furnace bodies near the flue gas outlet, and with the precise gas supply from the combustion-supporting assembly, complete primary combustion of waste and secondary incineration of flue gas are achieved.

Description

Technical Field

[0001] This invention relates to the field of municipal solid waste incineration technology, specifically to a small-scale municipal solid waste incineration system based on plasma coupling. Background Technology

[0002] The number of ships worldwide is increasing year by year. From January to September 2024, China received new ship orders for 1,307 vessels (35.77 million compensated gross tons), an increase of 66% (99%) year-on-year. In terms of compensated gross tons, China's new ship orders accounted for 70% of the global share, while this figure was only 33% at the end of 2019.

[0003] As of September 2024, China's new shipbuilding order backlog reached 84.44 million compensated gross tons, continuing to set new records. Based on this, China accounted for 57% of the global market share, also a record high. Consequently, the amount of ship waste has increased, especially from ocean-going vessels. Due to the long voyages, ships generate large amounts of waste during their voyages, making waste disposal difficult. Currently, both domestically and internationally, ship incinerators are used to incinerate ship waste generated during voyages. However, these incinerators primarily use diesel fuel as auxiliary fuel, consuming large amounts of diesel fuel and generating significant carbon dioxide emissions.

[0004] With the increasing national demand for low-carbon emissions during ship navigation, the research and development of new marine waste incineration technologies has become an area that urgently needs to be expanded. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a small-scale municipal solid waste incineration system based on plasma coupling. This system utilizes plasma moment coupling to ignite shipboard waste, achieving the goal of harmless incineration of all shipboard waste. The entire plasma ignition shipboard waste disposal technology uses a high-temperature flame generated by direct current plasma to ignite the waste. Simultaneously, relying on the inherent combustibility of the waste, continuous incineration is achieved throughout the ship's voyage, thereby reducing diesel consumption during waste disposal and achieving carbon reduction and emission reduction during waste incineration.

[0006] To achieve the above objectives, the technical solution of this invention is to design a small-scale municipal solid waste incineration system based on plasma coupling, which includes an incinerator body, a feeding assembly, a plasma ignition flare, a propulsion assembly, and a flue gas outlet. The incinerator body has a feed inlet at one end of the top and a flue gas outlet at the other end of the top; a feed assembly is installed at the feed inlet, and a propulsion assembly is provided at the end of the incinerator body near the feed inlet; The incinerator body is equipped with several plasma ignition torches.

[0007] Furthermore, the incinerator body is composed of a first furnace body, a second furnace body, and a baffle. The first furnace body is a transverse cylindrical cavity structure, and the second furnace body is a cuboid cavity structure. One end of the first furnace body is connected to one end of the second furnace body, and a baffle is provided at the connection between the first furnace body and the second furnace body. A smoke outlet is provided on the baffle. A propulsion assembly is installed at the other end of the first furnace body; a flue gas outlet is installed near the top of the other end of the second furnace body; Both the first and second furnace bodies are equipped with plasma ignition torches.

[0008] Furthermore, the propulsion assembly includes a cover, a hinge, an umbrella-shaped support, a threaded rod, a turntable, and a locking assembly. The cover is rotatably mounted on the open side of one end of the first furnace body via the hinge. An umbrella-shaped support is mounted on the end face of the cover away from the first furnace body. Both the umbrella-shaped support and the cover have threaded holes that are appropriately matched. One end of the threaded rod passes through the threaded holes on the umbrella-shaped support and the cover in sequence and is connected to the cylindrical push block. The other end of the threaded rod is connected to the turntable. The cover is fixed to the first furnace body by the locking assembly.

[0009] Furthermore, the locking assembly includes a lock seat, a lock shaft, a lock rod, a lock block, and a nut disc. The lock seat is installed at the bottom of the first furnace body, the lock shaft is rotatably installed on the lock seat, one end of the lock rod is connected to the lock shaft, and the other end of the lock rod has a thread. One end of the lock block is installed on the cover, and the other end of the lock block has a notch that matches the lock rod. The lock rod can be placed in the notch by rotation, and the nut disc is threaded onto the lock rod and secures the lock rod in the notch.

[0010] Furthermore, the hinge component includes a fixed block, a first hinge shaft, a hinge block, a second hinge shaft, and a hinge seat. The two fixed blocks are symmetrically installed on the side wall of the first furnace body. One end of the hinge block is rotatably installed between the fixed blocks via the first hinge shaft, and the other end of the hinge block is rotatably installed on the hinge seat via the second hinge shaft. The hinge seat is installed on the cover.

[0011] Furthermore, the feeding assembly includes a feeding shell, a conveyor belt, an upper support, a lower support, a first transmission shaft, a second transmission shaft, and material plates. The upper end of the feeding shell is installed on the top of the first furnace body via the upper support and communicates with the feeding port. The lower end of the feeding shell is installed on the lower side wall of the first furnace body via the lower support. A feeding port is provided at the lower end of the feeding shell. The two ends of the conveyor belt are respectively installed inside the feeding shell via the first transmission shaft and the second transmission shaft. Several material plates are vertically installed on the conveyor belt.

[0012] Furthermore, it also includes a combustion-supporting component, which is installed at the bottom of the first furnace body, and a number of holes communicating with the combustion-supporting component are provided on the bottom inner wall of the first furnace body.

[0013] Furthermore, the combustion-supporting component includes a shell, a delivery branch pipe, a delivery main pipe, and a gas storage or generation device. The shell is installed at the bottom of the first furnace body. The delivery main pipe is connected to the shell through several delivery branch pipes. A control valve is installed on the delivery branch pipe. The delivery main pipe is connected to the gas storage or generation device.

[0014] Furthermore, the second furnace body is provided with a first partition and a second partition. The first partition is located close to the first furnace body, and the lower end of the first partition is fixed to the inner wall of the bottom of the second furnace body. The first partition maintains a distance from the inner wall of the top of the second furnace body. The second partition is positioned away from the second furnace body, and the upper end of the second partition is fixed to the inner wall of the top of the second furnace body. The second partition maintains a distance from the inner wall of the bottom of the second furnace body.

[0015] Furthermore, the plasma ignition torch is located on the first furnace body and on the furnace wall of the second furnace body near the flue gas outlet.

[0016] A plasma torch is a device that uses electrical energy to heat and ionize gases (such as argon, nitrogen, hydrogen, air, or oxygen) to form a high-temperature, high-energy-density plasma jet. The temperature of this jet can reach thousands or even tens of thousands of degrees Celsius, and it can be used for various processes such as cutting, welding, spraying, melting, and gasification.

[0017] The advantages and beneficial effects of this invention are as follows: (1) This invention utilizes plasma moment coupling to ignite ship waste, thereby achieving the goal of harmless incineration of the entire ship waste. The entire plasma ignition torch ship waste disposal technology utilizes the high-temperature flame generated by plasma direct current to ignite the waste, while relying on the combustibility of the waste itself to achieve continuous incineration of the waste during the entire ship's voyage, thereby reducing the consumption of diesel fuel during the waste disposal process and achieving carbon reduction and emission reduction in the waste incineration process.

[0018] (2) The plasma coupling-based small-scale municipal solid waste incineration system of the present invention generates a high-temperature flame through a plasma moment generator to realize the combustion of ship municipal solid waste inside the furnace. Compared with conventional small incinerators, this device realizes the combustion of waste through a high-temperature flame generated by a plasma ignition torch. The high-temperature gas generated by the plasma ignition torch replaces the high-temperature flue gas generated by traditional fossil fuel combustion, thereby reducing the carbon dioxide emissions during the waste incineration process.

[0019] (3) The plasma coupling-based small-scale municipal solid waste incineration system of the present invention achieves combustion of combustible gas inside the second furnace body by arranging a plasma ignition torch inside the second furnace body and generating a high-temperature flame through the plasma ignition torch.

[0020] (4) This invention uses a plasma ignition torch as the core ignition component. Plasma has the characteristics of high temperature and high activity, which can quickly ignite the waste, solving the problems of slow ignition speed and unstable ignition in traditional ignition methods. At the same time, the plasma ignition torch is set on the furnace wall of the first furnace body and the furnace wall of the second furnace body near the flue gas outlet. With the precise gas supply of the combustion-supporting components, the waste is fully burned in one stage and the flue gas is incinerated in two stages. In addition, the first and second baffles in the second furnace body form a meandering flow channel, which prolongs the flue gas residence time, ensures that unburned combustibles are fully burned, effectively reduces the content of pollutants such as carbon monoxide and soot in the flue gas, and improves the environmental friendliness of incineration.

[0021] (5) The feeding assembly, through the cooperation of the conveyor belt and the material plate, realizes the quantitative and orderly transportation of waste, avoiding problems such as uneven feeding and waste accumulation in the furnace caused by traditional manual feeding, and improving the automation level of the feeding process; the propulsion assembly can not only push the waste to adjust the incineration position, but also achieve reliable sealing of the furnace body through the locking assembly. The locking assembly adopts the fastening structure of "locking rod-notch groove-nut disc", which is firmly locked and effectively prevents the leakage of high-temperature flue gas during incineration, ensuring the safety of operators. At the same time, the hinge adopts a double hinge shaft design, which makes the cover flexible in opening and closing, adapting to the furnace opening needs under different operating scenarios, and improving the convenience of equipment operation.

[0022] (6) The present invention divides the incinerator body into a first furnace body (a transverse cylindrical cavity) and a second furnace body (a cuboid cavity), and connects them and guides the flue gas through baffles. The structure is compact and occupies a small area, making it suitable for small-scale domestic waste disposal scenarios (such as ships). All components (feeding components, propulsion components, combustion-supporting components, and plasma ignition torch) adopt a modular design, which facilitates installation and maintenance, and reduces the cost of equipment use and operation.

[0023] (7) The combustion-supporting components, through the coordination of the main conveying pipe, the branch conveying pipe and the control valve, can precisely adjust the gas supply of each branch pipe according to the incineration status of the waste in the first furnace, avoid energy waste caused by excessive gas supply, and at the same time ensure that the oxygen or air required for combustion is reasonably matched with the waste, further improve the incineration efficiency, and achieve the synergistic effect of energy saving and efficient incineration. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the small-scale municipal solid waste incineration system based on plasma coupling according to the present invention; Figure 2yes Figure 1 First-angle structural diagram; Figure 3 yes Figure 2 A magnified view of a portion of the image; Figure 4 yes Figure 1 A schematic diagram of the second-angle structure; Figure 5 yes Figure 4 A magnified view of a portion of the image; Figure 6 yes Figure 1 Partial cross-sectional view; Figure 7 for Figure 6 Another structural diagram from another angle.

[0025] In the diagram: 1. Incinerator body; 2. Feeding assembly; 3. Plasma ignition torch; 4. Propulsion assembly; 5. Flue gas outlet; 6. Combustion aid assembly; 7. Feed inlet; 11. First furnace body; 12. Second furnace body; 13. Baffle; 21. Feed shell; 22. Conveyor belt; 23. Upper support; 24. Lower support; 25. First transmission shaft; 26. Second transmission shaft; 27. Material plate; 28. Feeding port; 41. Cover; 42. Hinge; 43. Umbrella-shaped support seat; 44. Threaded rod; 45. Turntable; 46. Locking assembly; 47. Cylindrical push block; 61. Shell; 62. Conveying branch pipe; 63. Conveying main pipe; 64. Gas storage or generation equipment; 121. First partition; 122. Second partition; 461. Lock seat; 462. Locking shaft; 463. Locking rod; 464. Locking block; 465. Nut disc; 421. Fixing block; 422. First hinge shaft; 423. Hinge block; 424. Second hinge shaft; 425. Detailed Implementation

[0026] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0027] according to Figures 1-7 As shown, this invention is a small-scale municipal solid waste incineration system based on plasma coupling, which includes an incinerator body 1, a feeding assembly 2, a plasma ignition torch 3, a propulsion assembly 4, and a flue gas outlet 5. The incinerator body 1 has a feed inlet 7 at one end of the top and a flue gas outlet 5 at the other end of the top; a feed assembly 2 is installed at the feed inlet, and a propulsion assembly 4 is provided at one end of the incinerator body 1 near the feed inlet. The incinerator body 1 is equipped with several plasma torches 3.

[0028] As a preferred embodiment of the above technical solution, the incinerator body 1 is composed of a first furnace body 11, a second furnace body 12 and a baffle 13. The first furnace body 11 is a transverse cylindrical cavity structure, and the second furnace body 12 is a cuboid cavity structure. One end of the first furnace body 11 is connected to one end of the second furnace body 12. A baffle 13 is provided at the connection between the first furnace body 11 and the second furnace body 12, and a smoke outlet is provided on the baffle 13. The first furnace body 11 is equipped with a propulsion assembly 4 at the other end; the second furnace body 12 is equipped with a flue gas outlet 5 near the top of the other end; Plasma ignition torches 3 are installed on both the first furnace body 11 and the second furnace body 12.

[0029] As a preferred embodiment of the above technical solution, the propulsion assembly 4 includes a cover 41, a hinge 42, an umbrella-shaped support 43, a threaded rod 44, a turntable 45, a locking assembly 46, and a cylindrical push block 47. The cover 41 is rotatably mounted on the open side of one end of the first furnace body 11 via the hinge 42. The umbrella-shaped support 43 is mounted on the end face of the cover 41 facing away from the first furnace body. Both the umbrella-shaped support 43 and the cover 41 have threaded holes that are appropriately matched. One end of the threaded rod 44 passes through the threaded holes on the umbrella-shaped support 43 and the cover 41 and connects to the cylindrical push block 47. The other end of the threaded rod 44 is connected to the turntable 45. The cover 41 is fixed to the first furnace body 11 by the locking assembly 46. The umbrella-shaped support provides stable support for the threaded rod, preventing the threaded rod from shifting during rotation and pushing.

[0030] As a preferred embodiment of the above technical solution, the locking assembly 46 includes a lock seat 461, a lock shaft 462, a lock rod 463, a lock block 464, and a nut disc 465. The lock seat 461 is installed at the bottom of the first furnace body. The lock shaft 462 is rotatably mounted on the lock seat 461. One end of the lock rod 463 is connected to the lock shaft 462, and the other end of the lock rod 463 has a threaded end. One end of the lock block 464 is installed on the cover 41, and the other end of the lock block 464 has a notch that matches the lock rod 463. The lock rod 463 can be rotated into the notch. The nut disc 465 is threaded onto the lock rod 463 and secures the lock rod in the notch. The lock seat and lock shaft of the locking assembly adopt a rotatable connection structure, which improves the flexibility of the locking operation and the durability of the structure, ensures long-term stable operation of the equipment, and extends the service life of the equipment.

[0031] As a preferred embodiment of the above technical solution, the hinge component 42 includes a fixing block 421, a first hinge shaft 422, a hinge block 423, a second hinge shaft 424, and a hinge seat 425. The two fixing blocks 421 are symmetrically installed on the side wall of the first furnace body 11. One end of the hinge block 423 is rotatably installed between the fixing blocks via the first hinge shaft 422, and the other end of the hinge block 423 is rotatably installed on the hinge seat 425 via the second hinge shaft 424. The hinge seat 425 is installed on the cover 41.

[0032] As a preferred embodiment of the above technical solution, the feeding assembly 2 includes a feeding shell 21, a conveyor belt 22, an upper support 23, a lower support 24, a first transmission shaft 25, a second transmission shaft 26, and material plates 27. The upper end of the feeding shell 21 is installed on the top of the first furnace body 11 through the upper support 23 and communicates with the feeding port 7. The lower end of the feeding shell 21 is installed on the lower side wall of the first furnace body 11 through the lower support 24. A feeding port 28 is provided at the lower end of the feeding shell 21. The two ends of the conveyor belt 22 are respectively installed inside the feeding shell 21 through the first transmission shaft 25 and the second transmission shaft 26. Several material plates 27 are vertically installed on the conveyor belt 22.

[0033] As a preferred embodiment of the above technical solution, it further includes a combustion-supporting component 6, which is installed at the bottom of the first furnace body 11, and a plurality of holes communicating with the combustion-supporting component are provided on the bottom inner wall of the first furnace body.

[0034] As a preferred embodiment of the above technical solution, the combustion-supporting component 6 includes a housing 61, a conveying branch pipe 62, a conveying main pipe 63, and a gas storage or generating device 64. The housing 61 is installed at the bottom of the first furnace body 11. The conveying main pipe 63 is connected to the housing 61 through several conveying branch pipes 62. A control valve is installed on the conveying branch pipe 62. The conveying main pipe is connected to the gas storage or generating device 64.

[0035] As a preferred embodiment of the above technical solution, the second furnace body 12 is provided with a first partition 121 and a second partition 122. The first partition 121 is located close to the first furnace body 11, and the lower end of the first partition 121 is fixed to the bottom inner wall of the second furnace body 12. The first partition 121 maintains a distance from the top inner wall of the second furnace body 12. The second partition 122 is disposed away from the second furnace body 12, and the upper end of the second partition 122 is fixed to the inner wall of the top of the second furnace body 12. The second partition 122 maintains a distance from the inner wall of the bottom of the second furnace body 12.

[0036] As a preferred embodiment of the above technical solution, the plasma ignition torch 3 is disposed on the furnace wall of the first furnace body 11 and on the furnace wall of the second furnace body 12 near the flue gas outlet 5.

[0037] The implementation principle of this invention is as follows: This invention relates to a plasma-coupled small-scale municipal solid waste incineration system. Through the coordinated operation of its various components, it achieves efficient and stable incineration of small-scale municipal solid waste. Its core implementation principle is based on an integrated design logic of "orderly feeding - plasma ignition and combustion assistance - zoned incineration - flue gas diversion - safety locking," and the specific process is as follows: S1: Feeding Stage: The feeding assembly completes the orderly conveying and feeding of municipal solid waste. Operators feed small pieces of municipal solid waste into the feeding port at the bottom of the feeding shell, activating the drive mechanism to rotate the first and second drive shafts, which in turn drives the conveyor belt. Several vertically arranged material plates on the conveyor belt separate and push the waste, preventing accumulation or slippage, ensuring that the waste is stably and quantitatively conveyed to the position at the top of the feeding shell that connects to the feeding port of the first furnace body, and finally falls into the first furnace body, achieving automation and controllability of the feeding process.

[0038] S2: Incineration Preparation and Ignition Stage: After feeding, the initial position of the waste in the furnace is adjusted by the propulsion component, and the furnace body is sealed and locked. The rotating turntable drives the threaded rod to rotate. Guided by the threaded holes of the umbrella-shaped support seat and the cover, the threaded rod pushes the cylindrical pusher block to move within the first furnace body, pushing the falling waste to the appropriate incineration area. Subsequently, the cover is rotated via the hinge to fit against the opening of the first furnace body. The locking component is then operated to complete the locking: rotating the locking rod causes it to engage with the notch in the locking block on the cover. Tightening the nut secures the locking rod in the notch, ensuring a tight fit between the cover and the first furnace body, preventing flue gas leakage or oxygen / air loss during incineration. The hinge uses a double-hinged shaft structure. Through the cooperation of the fixed block, hinge block, and hinge seat, the cover can be opened and closed flexibly, adapting to the sealing and opening requirements of the first furnace body opening.

[0039] S3: Incineration Stage: Utilizing the synergistic effect of plasma ignition and combustion-supporting components, efficient waste incineration is achieved. The plasma ignition torches on both the first and second furnace bodies are activated, releasing high-temperature plasma to rapidly ignite the waste within the first furnace body. Simultaneously, the combustion-supporting components begin operation. Gas (using air or oxygen) generated by the gas storage or generation equipment is distributed to various branch pipes via the main conveying pipe. The gas flow rate in each branch pipe is regulated by control valves. The gas ultimately enters the furnace through several through-holes on the inner wall of the bottom of the first furnace body, forming a synergistic combustion-supporting effect with the oxygen required for waste combustion, ensuring complete combustion. During incineration, the propulsion component can continuously push the waste towards the connection point between the first and second furnace bodies by adjusting the position of the cylindrical pusher blocks, ensuring continuous incineration.

[0040] S4: Flue Gas Guiding and Secondary Combustion Stage: The flue gas generated in the first furnace enters the second furnace through the flue gas outlet on the baffle plate at the connection between the first and second furnace bodies. The first and second baffles within the second furnace body form a meandering guiding channel: the flue gas first encounters the first baffle (fixed at the lower end, with a gap between its upper end and the furnace top) located near the first furnace body, and must then detour around the upper part of the first baffle to enter the rear side; subsequently, it encounters the second baffle (fixed at the upper end, with a gap between its lower end and the furnace bottom) located away from the first furnace body, and then detours forward from the lower end of the second baffle. This meandering path prolongs the residence time of the flue gas within the second furnace body. Simultaneously, the plasma ignition torch near the flue gas outlet in the second furnace body continues to operate, performing secondary combustion of unburned combustibles in the flue gas, further improving combustion efficiency and reducing harmful gas emissions.

[0041] S5: Flue gas discharge stage: After secondary incineration and purification, the flue gas is finally discharged from the flue gas outlet at the top of the other end of the second furnace body and enters the subsequent flue gas treatment system (not shown) to complete the entire incineration process.

[0042] In this invention, during the incineration process, the waste to be treated first enters the incinerator body through the feeding assembly. After three to four consecutive feeding cycles, the entire furnace body is ignited by activating the plasma ignition torch, and the waste burns under the high-temperature flame generated by the plasma ignition torch. Simultaneously, the entire system activates the combustion-supporting assembly, which supplements the furnace body with air or oxygen to achieve oxygen-rich combustion of the waste inside the furnace body. The large amount of flue gas generated by the combustion of waste inside the furnace body enters the second furnace body through a baffle, where it is ignited and burned under the action of the plasma ignition torch. After combustion in the second furnace body, the flue gas enters the subsequent flue gas treatment system through the flue gas outlet.

[0043] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A small-scale municipal solid waste incineration system based on plasma coupling, characterized in that, It includes the incinerator body (1), the feeding assembly (2), the plasma ignition torch (3), the propulsion assembly (4), and the flue gas outlet (5). The incinerator body (1) has a feed inlet (7) at one end and a flue gas outlet (5) at the other end; a feed assembly (2) is installed at the feed inlet, and a propulsion assembly (4) is provided at one end of the incinerator body (1) near the feed inlet. The incinerator body (1) is equipped with several plasma torches (3).

2. The small-scale municipal solid waste incineration system based on plasma coupling as described in claim 1, characterized in that, The incinerator body (1) is composed of a first furnace body (11), a second furnace body (12) and a baffle (13). The first furnace body (11) is a transverse cylindrical cavity structure, and the second furnace body (12) is a cuboid cavity structure. One end of the first furnace body (11) is connected to one end of the second furnace body (12). A baffle (13) is provided at the connection between the first furnace body and the second furnace body. A smoke outlet is provided on the baffle (13). A propulsion assembly (4) is installed at the other end of the first furnace body (11); a flue gas outlet (5) is installed near the top of the other end of the second furnace body (12); Plasma torches (3) are installed on both the first furnace body (11) and the second furnace body (12).

3. The small-scale municipal solid waste incineration system based on plasma coupling according to claim 2, characterized in that, The propulsion assembly 4 includes a cover (41), a hinge (42), an umbrella-shaped support (43), a threaded rod (44), a turntable (45), a locking assembly (46), and a cylindrical push block (47). The cover (41) is rotatably mounted on the open side of one end of the first furnace body (11) through the hinge (42). The umbrella-shaped support (43) is mounted on the end face of the cover (41) away from the first furnace body. The umbrella-shaped support (43) and the cover (41) are both provided with threaded holes that are adapted to the position. One end of the threaded rod (44) passes through the threaded holes on the umbrella-shaped support (43) and the cover (41) in sequence and is connected to the cylindrical push block (47). The other end of the threaded rod (44) is connected to the turntable (45). The cover (41) is fixed to the first furnace body (11) through the locking assembly (46).

4. The small-scale municipal solid waste incineration system based on plasma coupling according to claim 3, characterized in that, The locking assembly (46) includes a lock seat (461), a lock shaft (462), a lock rod (463), a lock block (464), and a nut disc (465). The lock seat (461) is installed at the bottom of the first furnace body. The lock shaft (462) is rotatably installed on the lock seat (461). One end of the lock rod (463) is connected to the lock shaft (462). The other end of the lock rod (463) has a thread. One end of the lock block (464) is installed on the cover (41). The other end of the lock block (464) has a notch that matches the lock rod (463). The lock rod (463) can be placed in the notch by rotation. The nut disc (465) is threaded onto the lock rod (463) and secures the lock rod in the notch.

5. The small-scale municipal solid waste incineration system based on plasma coupling according to claim 3, characterized in that, The hinge (42) includes a fixed block (421), a first hinge shaft (422), a hinge block (423), a second hinge shaft (424), and a hinge seat (425). The two fixed blocks (421) are symmetrically installed on the side wall of the first furnace body (11). One end of the hinge block (423) is rotatably installed between the fixed blocks (421) through the first hinge shaft (422), and the other end of the hinge block (423) is rotatably installed on the hinge seat (425) through the second hinge shaft (424). The hinge seat (425) is installed on the cover (41).

6. The small-scale municipal solid waste incineration system based on plasma coupling according to claim 1, characterized in that, The feeding assembly (2) includes a feeding shell (21), a conveyor belt (22), an upper support (23), a lower support (24), a first transmission shaft (25), a second transmission shaft (26), and material plates (27). The upper end of the feeding shell (21) is installed on the top of the first furnace body (11) through the upper support (23) and communicates with the feeding port (7). The lower end of the feeding shell (21) is installed on the lower side wall of the first furnace body (11) through the lower support (24). A feeding port (28) is opened at the lower end of the feeding shell (21). The two ends of the conveyor belt (22) are installed in the feeding shell (21) through the first transmission shaft (25) and the second transmission shaft (26), respectively. Several material plates (27) are vertically installed on the conveyor belt (22).

7. The small-scale municipal solid waste incineration system based on plasma coupling according to claim 6, characterized in that, It also includes a combustion-supporting component (6), which is installed at the bottom of the first furnace body (11). The bottom inner wall of the first furnace body has several holes that communicate with the combustion-supporting component.

8. The small-scale municipal solid waste incineration system based on plasma coupling according to claim 7, characterized in that, The combustion-supporting component (6) includes a housing (61), a conveying branch pipe (62), a conveying main pipe (63), and a gas storage or generation device (64). The housing (61) is installed at the bottom of the first furnace body (11). The conveying main pipe (63) is connected to the housing (61) through several conveying branch pipes (62). Control valves are installed on the conveying branch pipes (62). The conveying main pipe (63) is connected to the gas storage or generation device (64).

9. The small-scale municipal solid waste incineration system based on plasma coupling according to claim 2, characterized in that, The second furnace body (12) is provided with a first partition (121) and a second partition (122). The first partition (121) is located close to the first furnace body (11), and the lower end of the first partition (121) is fixed to the bottom inner wall of the second furnace body (12). The first partition (121) maintains a distance from the top inner wall of the second furnace body (12). The second partition (122) is disposed away from the second furnace body (12), and the upper end of the second partition (122) is fixed to the inner wall of the top of the second furnace body (12), and the second partition (122) maintains a distance from the inner wall of the bottom of the second furnace body (12).

10. The small-scale municipal solid waste incineration system based on plasma coupling according to claim 9, characterized in that, The plasma ignition torch (3) is located on the first furnace body and on the furnace wall of the second furnace body near the flue gas outlet (5).

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