Low-carbon all-in-one machine for magnetic wave cracking of household garbage

Abstract

The present application relates to solid waste treatment technical field, specifically to a kind of domestic waste magnetic wave cracking low carbon all-in-one machine, including rack, cracking cylinder, heating assembly and circulation component;Cracking cylinder is rotatably arranged on rack, and the axial both ends of cracking cylinder are respectively provided with material inlet end and slag discharge end, and the inner wall of cracking cylinder is provided with helical advancing plate, and helical advancing plate is used to advance the direction of plastic by material inlet end to the direction of slag discharge end movement;Heating assembly includes electromagnetic coil and heating ball, and electromagnetic coil is coaxially sleeved in the outside of cracking cylinder, and heating ball is located in the inside of cracking cylinder, and cracking cylinder and heating ball can be heated under the action of electromagnetic coil to heat plastic;Circulation component includes circulation pipe, and circulation pipe is coaxially rotatably arranged in the inside of cracking cylinder, and the outside of circulation pipe is sleeved with multiple stirring frames distributed along its axial direction, and stirring frame can agitate heating ball deposited in the bottom of cracking cylinder upwards when circulation pipe rotates, and plastic is heated more evenly as a whole, and cracking effect is good.

Description

Technical Field

[0001] This invention relates to the field of solid waste treatment technology, and in particular to a low-carbon integrated machine for magnetic wave pyrolysis of municipal solid waste. Background Technology

[0002] With the continuous growth of plastic consumption, the disposal and resource utilization of waste plastics has become an important issue in environmental protection and the circular economy. Currently, the industry commonly uses pyrolysis devices to treat waste plastics at high temperatures to recover valuable products such as fuel oil, industrial carbon black, and non-condensable fuel gas. For example, patent document CN210966350U discloses a fixed, fully continuous waste rubber and plastic pyrolysis device, which includes a combustion furnace and a three-stage pyrolysis conveying screw. The three-stage pyrolysis conveying screw extends the material residence time, ensuring a complete pyrolysis reaction. Simultaneously, the tumbling action during screw conveying removes ash and slag from the material, allowing it to absorb heat more fully. However, in actual operation, this pyrolysis device relies primarily on heat conduction through the cylinder wall for material heating, easily leading to overheating of the outer layer and insufficient temperature in the inner layer, resulting in uneven heating and affecting the pyrolysis effect. Summary of the Invention

[0003] Therefore, it is necessary to provide a low-carbon integrated magnetic wave pyrolysis machine for municipal solid waste to address the technical problem of uneven heating in current pyrolysis devices.

[0004] The above objectives are achieved through the following technical solutions:

[0005] The integrated low-carbon magnetic wave pyrolysis machine for municipal solid waste includes a frame, a pyrolysis cylinder, a heating component, and a circulation component. The municipal solid waste is pulverized plastic. The frame is placed on the ground. The axis of the pyrolysis cylinder extends horizontally and is rotatably mounted on the frame around its own axis. The pyrolysis cylinder has an inlet end and a slag discharge end at its axial ends. A spiral propulsion plate is provided on the inner wall of the pyrolysis cylinder to propel the plastic inside the cylinder from the inlet end to the slag discharge end. The heating component includes an electromagnetic coil and a heating ball. The electromagnetic coil is coaxially sleeved on the outside of the pyrolysis cylinder, and the heating ball is located inside the pyrolysis cylinder. Both the pyrolysis cylinder and the heating ball can generate heat under the action of the electromagnetic coil to heat the plastic. The circulation component includes a circulation pipe, which is coaxially rotatably mounted inside the pyrolysis cylinder. Multiple stirring racks distributed along its axial direction are sleeved on the outside of the circulation pipe. When the circulation pipe rotates, the stirring racks can agitate the heating ball deposited at the bottom of the pyrolysis cylinder upwards.

[0006] Furthermore, the interior of the pyrolysis cylinder is divided into a preheating zone, a main pyrolysis zone, and a deep pyrolysis zone from the feed end to the slag discharge end. The interior of the pyrolysis cylinder is equipped with heating balls of three different diameters: a first heating ball, a second heating ball, and a third heating ball with successively decreasing diameters. The first heating ball corresponds to the preheating zone, the second heating ball corresponds to the main pyrolysis zone, and the third heating ball corresponds to the deep pyrolysis zone. The diameter of the first heating ball is greater than the radial protrusion height of the spiral propeller plate, the diameter of the second heating ball is equal to the radial protrusion height of the spiral propeller plate, and the diameter of the third heating ball is less than the radial protrusion height of the spiral propeller plate.

[0007] Furthermore, the end of the circulation pipe near the slag discharge end is provided with a ball-scooping bucket and a ball-inlet. The ball-scooping bucket is fixedly installed on the outer circumferential surface of the circulation pipe. When the circulation pipe rotates, it can scoop up the heated balls that have moved to the vicinity of the slag discharge end and allow the heated balls to enter the circulation pipe through the ball-inlet under their own gravity. The inner wall of the circulation pipe is also provided with an inner spiral guide plate. When the circulation pipe rotates, the inner spiral guide plate transports the heated balls inside the circulation pipe from the slag discharge end to the feed end.

[0008] Furthermore, the circulation pipe has a first ball outlet hole, a second ball outlet hole, and a third ball outlet hole arranged sequentially along the axial direction on its wall. The first ball outlet hole corresponds to the preheating zone and its diameter is larger than the diameter of the first heating ball. The second ball outlet hole corresponds to the main pyrolysis zone and its diameter is larger than the diameter of the second heating ball and smaller than the diameter of the first heating ball. The third ball outlet hole corresponds to the deep pyrolysis zone and its diameter is larger than the diameter of the third heating ball and smaller than the diameter of the second heating ball.

[0009] Furthermore, the stirring rack includes a rotating ring and blades. The rotating ring is coaxially sleeved on the outside of the circulation pipe. Mounting rings are fixedly provided on the outer circumferential surface of the circulation pipe corresponding to the positions of each stirring rack. The mounting rings correspond one-to-one with the rotating rings and rotate in cooperation. An arc-shaped groove is provided on the outer circumferential surface of the mounting ring, and an annular groove is provided on the inner circumferential surface of the rotating ring. The mounting ring is engaged in the annular groove, and a locking block is provided within the annular groove. The end of the locking block extends into the arc-shaped groove, and a spring is provided on one side of the locking block. One end of the spring abuts against the locking block, and the other end abuts against the groove wall of the arc-shaped groove, thereby limiting the rotation angle of the rotating ring relative to the mounting ring. Multiple blades are provided and evenly distributed around the circumference of the rotating ring. The blades oscillate synchronously with the rotating ring to agitate the heating ball and plastic.

[0010] Furthermore, the feeding end of the pyrolysis cylinder is provided with a conveying cylinder, the upper part of the conveying cylinder is provided with a feeding port, and the inside of the conveying cylinder is provided with a conveying auger, which is used to convey the plastic entering through the feeding port into the pyrolysis cylinder; the slag discharge end of the pyrolysis cylinder is coaxially provided with a screening cylinder, the screening cylinder is provided with a slag discharge hole, and the lower end of the screening cylinder is provided with a conical cylinder, the axis of the conical cylinder extending in the vertical direction, and the carbon black generated in the pyrolysis cylinder falls into the conical cylinder after being filtered through the slag discharge hole.

[0011] Furthermore, the pyrolysis cylinder is conical, with the feed end being the large end and the slag discharge end being the small end.

[0012] Furthermore, the frame is equipped with a first drive motor, which is used to drive the pyrolysis cylinder to rotate around its own axis.

[0013] Furthermore, the frame is also equipped with a second drive motor, which is used to drive the conveying auger to rotate around the axis of the conveying cylinder.

[0014] Furthermore, the frame is also equipped with a third drive motor, which is used to drive the circulation tube to rotate around its own axis.

[0015] The beneficial effects of this invention are:

[0016] The present invention provides a low-carbon integrated magnetic wave pyrolysis machine for municipal solid waste. Firstly, it utilizes a pyrolysis cylinder to heat the plastic from the outside, and heating balls to heat the plastic from the inside. Simultaneously, a stirring rack agitates the heating balls deposited at the bottom of the pyrolysis cylinder, causing them to disperse more evenly within the cylinder. This results in more uniform heating and a better pyrolysis effect, with the internal and external temperatures of the plastic becoming closer. Furthermore, the rotation of the pyrolysis cylinder promotes mixing between the heating balls and the plastic, further enhancing the heating effect.

[0017] Second, the diameter of the first heating ball is greater than the radial protrusion height of the spiral propeller plate, making it difficult for the spiral propeller plate to push the first heating ball along the axial direction of the pyrolysis cylinder during rotation. As a result, most of the first heating balls remain in the preheating zone to heat the plastic in the preheating zone. The diameter of the second heating ball is equal to the radial protrusion height of the spiral propeller plate, allowing the spiral propeller plate to push the second heating ball along the axial direction of the pyrolysis cylinder during rotation. The propulsion capacity is moderate (the number of second heating balls being pushed is moderate), allowing the second heating ball to carry the molten plastic adhering to its surface into the deep pyrolysis zone for pyrolysis into carbon black. This makes it easy for the second heating ball to separate from the molten plastic, thus maintaining cleanliness and improving the heat conduction effect of the second heating ball. The diameter of the third heating ball is smaller than the radial protrusion height of the spiral propeller plate, allowing the spiral propeller plate to push the third heating ball along the axial direction of the pyrolysis cylinder during rotation. The propulsion capacity is strong (the number of third heating balls being pushed is large), making it easy for the third heating ball to be pushed by the spiral propeller plate and separated from the carbon black.

[0018] Third, the large diameter of the first heating ball also has a crushing effect on the plastic, preventing the plastic in the preheating zone from sticking together and clumping; the specific surface area of ​​the second and third heating balls gradually increases, and the heating effect gradually increases, which can promote the melting of plastic and the formation of carbon black. At the same time, the small volume of the third heating ball results in a higher probability of collision, which can improve the crushing effect of carbon black and is beneficial to the subsequent processing of carbon black.

[0019] Fourth, the stirring rack can move the heating ball and plastic inside the pyrolysis cylinder, and the stirring rack has a certain buffering effect during rotation, thereby preventing damage to the stirring rack. In addition, when the stirring rack moves the heating ball and plastic upward, the spring is compressed, and then the heating ball and plastic will fall under their own gravity. As a result, the stirring rack will vibrate and reset under the action of the spring, thereby causing the molten plastic adhering to the stirring rack to be thrown off, preventing it from sticking to the stirring rack for a long time. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a low-carbon integrated magnetic wave pyrolysis machine for municipal solid waste provided in an embodiment of the present invention;

[0021] Figure 2 This is a side view schematic diagram of a low-carbon integrated machine for magnetic wave pyrolysis of municipal solid waste provided in an embodiment of the present invention;

[0022] Figure 3 for Figure 2 Schematic diagram of the AA section;

[0023] Figure 4 for Figure 3 Enlarged view of the structure at point X;

[0024] Figure 5for Figure 3 Enlarged view of the structure at point Y in the middle;

[0025] Figure 6 This is an explosion diagram of the pyrolysis cylinder in a low-carbon integrated magnetic wave pyrolysis machine for municipal solid waste provided in an embodiment of the present invention;

[0026] Figure 7 for Figure 6 Enlarged view of the structure at point W in the middle;

[0027] Figure 8 for Figure 6 Enlarged view of the structure at point Z in the middle;

[0028] Figure 9 This is a side view of the pyrolysis cylinder in a low-carbon integrated magnetic wave pyrolysis machine for municipal solid waste provided in an embodiment of the present invention;

[0029] Figure 10 for Figure 9 BB section view;

[0030] Figure 11 This is a cross-sectional schematic diagram of the pyrolysis cylinder in a low-carbon integrated magnetic wave pyrolysis machine for municipal solid waste provided in an embodiment of the present invention.

[0031] Wherein: 100, frame; 110, first drive motor; 120, second drive motor; 130, feed inlet; 140, conveying auger; 150, third drive motor; 160, exhaust port; 170, conical cylinder; 180, electromagnetic coil; 190, screening cylinder; 200, pyrolysis cylinder; 201, spiral propulsion plate; 300, circulation pipe; 301, ball scoop; 302, inner spiral guide plate; 303, mounting ring; 3031, arc groove; 304, first ball outlet hole; 305, second ball outlet hole; 306, third ball outlet hole; 307, ball inlet; 400, stirring rack; 401, locking block; 402, spring; 403, blade; 404, rotating ring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0033] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They 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, and therefore should not be construed as limiting the invention.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] like Figures 1 to 11 As shown, an embodiment of the present invention provides a low-carbon integrated machine for magnetic wave pyrolysis of municipal solid waste, including a frame 100, a pyrolysis cylinder 200, a heating component, and a circulation component; the municipal solid waste is pulverized plastic, the frame 100 is placed on the ground, the axis of the pyrolysis cylinder 200 extends horizontally, and it is rotatably mounted on the frame 100 around its own axis. The pyrolysis cylinder 200 has a feed end and a discharge end at its axial ends, respectively. A spiral propulsion plate 201 is provided on the inner wall of the pyrolysis cylinder 200, which is used to propel the plastic inside the pyrolysis cylinder 200 from the feed end to the discharge end. The heating assembly includes an electromagnetic coil 180 and a heating ball. The electromagnetic coil 180 is coaxially sleeved on the outside of the pyrolysis cylinder 200, and the heating ball is located inside the pyrolysis cylinder 200. Both the pyrolysis cylinder 200 and the heating ball can generate heat under the action of the electromagnetic coil 180 to heat the plastic. The circulation assembly includes a circulation pipe 300, which is coaxially rotatably disposed inside the pyrolysis cylinder 200. A plurality of stirring racks 400 distributed along its axial direction are sleeved on the outside of the circulation pipe 300. When the circulation pipe 300 rotates, the stirring racks 400 can stir the heating ball deposited at the bottom of the pyrolysis cylinder 200 upward.

[0036] Specifically, the pyrolysis cylinder 200 and the heating ball are both made of carbon steel-like ferromagnetic materials, such as carbon steel. The circulation pipe 300 and the stirring rack 400 are made of non-conductive materials, such as ceramic tubes and quartz tubes, so that they will not be affected by the induction of the electromagnetic coil 180.

[0037] This method utilizes the pyrolysis cylinder 200 to heat the plastic from the outside, and the heating balls to heat the plastic from the inside. Simultaneously, the stirring rack 400 agitates the heating balls deposited at the bottom of the pyrolysis cylinder 200, causing them to disperse more evenly within the cylinder. This results in closer temperature distribution inside and outside the plastic, more uniform heating, and better pyrolysis performance. Furthermore, the rotation of the pyrolysis cylinder 200 promotes mixing between the heating balls and the plastic, further enhancing the heating effect.

[0038] Furthermore, the interior of the pyrolysis cylinder 200 is divided into a preheating zone, a main pyrolysis zone, and a deep pyrolysis zone from the feed end to the slag discharge end. The interior of the pyrolysis cylinder 200 is provided with heating balls of three different diameters, namely a first heating ball, a second heating ball, and a third heating ball with successively decreasing diameters. The first heating ball corresponds to the preheating zone, the second heating ball corresponds to the main pyrolysis zone, and the third heating ball corresponds to the deep pyrolysis zone. The diameter of the first heating ball is greater than the radial protrusion height of the spiral propeller plate 201, the diameter of the second heating ball is equal to the radial protrusion height of the spiral propeller plate 201, and the diameter of the third heating ball is less than the radial protrusion height of the spiral propeller plate 201.

[0039] Specifically, there are three sets of electromagnetic coils 180, corresponding to the preheating zone, the main pyrolysis zone, and the deep pyrolysis zone, respectively. The power of the three sets of electromagnetic coils 180 increases sequentially along the axial direction of the pyrolysis cylinder 200, so that the temperature in the preheating zone is the lowest, the temperature in the main pyrolysis zone is moderate, and the temperature in the deep pyrolysis zone is the highest. As a result, the plastic will not melt after entering the preheating zone, will melt into a molten state in the main pyrolysis zone, and finally pyrolyze to form carbon black in the deep pyrolysis zone.

[0040] The diameter of the first heating ball is greater than the radial protrusion height of the spiral propeller plate 201, making it difficult for the spiral propeller plate 201 to push the first heating ball along the axial direction of the pyrolysis cylinder 200 during rotation. As a result, most of the first heating balls remain in the preheating zone to heat the plastic in the preheating zone. The diameter of the second heating ball is equal to the radial protrusion height of the spiral propeller plate 201, allowing the spiral propeller plate 201 to push the second heating ball along the axial direction of the pyrolysis cylinder 200 during rotation. The propulsion capacity is moderate (the number of second heating balls being pushed is moderate), allowing the second heating ball to carry the molten plastic adhering to its surface into the deep pyrolysis zone for pyrolysis into carbon black. This makes it easy for the second heating ball to separate from the molten plastic, thus maintaining cleanliness and improving the heat conduction effect of the second heating ball. The diameter of the third heating ball is smaller than the radial protrusion height of the spiral propeller plate 201, allowing the spiral propeller plate 201 to push the third heating ball along the axial direction of the pyrolysis cylinder 200 during rotation. The propulsion capacity is strong (the number of third heating balls being pushed is large), making it easy for the third heating ball to be pushed by the spiral propeller plate 201 and separated from the carbon black.

[0041] The first heating ball has a large diameter and can also break up plastic, preventing the plastic in the preheating zone from sticking together and clumping. The specific surface area of ​​the second and third heating balls gradually increases, and the heating effect gradually increases, which can promote the melting of plastic and the formation of carbon black. At the same time, the third heating ball has a small volume, so the probability of collision is higher, which can improve the crushing effect of carbon black and is beneficial to the subsequent processing of carbon black.

[0042] Furthermore, the circulation pipe 300 is provided with a ball-scooping hopper 301 and a ball-inlet 307 at one end near the slag discharge end. The ball-scooping hopper 301 is fixedly installed on the outer circumferential surface of the circulation pipe 300. When the circulation pipe 300 rotates, it can scoop up the heated balls that have moved to the vicinity of the slag discharge end and allow the heated balls to enter the circulation pipe 300 through the ball-inlet 307 under their own gravity. The inner wall of the circulation pipe 300 is also provided with an inner spiral guide plate 302. When the circulation pipe 300 rotates, the inner spiral guide plate 302 conveys the heated balls inside the circulation pipe 300 from the slag discharge end to the feed end.

[0043] Specifically, the ball-scooping hopper 301 is L-shaped, and the ball-collecting inlet 307 corresponds to the root position of the ball-scooping hopper 301. In this way, after the heated ball moves to the slag discharge end, it will be scooped up by the ball-scooping hopper 301 and sent back into the interior of the circulation pipe 300, and then return to the corresponding position, realizing the circulation of the heated ball.

[0044] Furthermore, the circulation pipe 300 has a first ball outlet hole 304, a second ball outlet hole 305, and a third ball outlet hole 306 arranged sequentially along the axial direction on its wall. The first ball outlet hole 304 corresponds to the preheating zone, and its diameter is larger than the diameter of the first heating ball. The second ball outlet hole 305 corresponds to the main pyrolysis zone, and its diameter is larger than the diameter of the second heating ball but smaller than the diameter of the first heating ball. The third ball outlet hole 306 corresponds to the deep pyrolysis zone, and its diameter is larger than the diameter of the third heating ball but smaller than the diameter of the second heating ball. Since the heating balls are in a loose state inside the circulation pipe 300, as they move from the slag discharge end to the feed end, the third heating ball inside the circulation pipe 300 will fall from the third ball outlet hole 306 to the deep pyrolysis zone, the second heating ball will fall from the second ball outlet hole 305 to the main pyrolysis zone, and the first heating ball will fall from the first ball outlet hole 304 to the preheating zone, thus ensuring that all heating balls fall to the initial area.

[0045] Further, the stirring rack 400 includes a rotating ring 404 and blades 403. The rotating ring 404 is coaxially sleeved on the outside of the circulation pipe 300. Mounting rings 303 are fixedly provided on the outer circumferential surface of the circulation pipe 300 corresponding to the positions of each stirring rack 400. The mounting rings 303 correspond one-to-one with the rotating rings 404 and are rotatably engaged. An arc-shaped groove 3031 is provided on the outer circumferential surface of the mounting ring 303, and an annular groove is provided on the inner circumferential surface of the rotating ring 404. The mounting rings 303 are fitted into the annular groove. The device includes a locking block 401, the end of which extends into the arc-shaped groove 3031. A spring 402 is provided on one side of the locking block 401. One end of the spring 402 abuts against the locking block 401, and the other end abuts against the groove wall of the arc-shaped groove 3031 to limit the rotation angle of the rotating ring 404 relative to the mounting ring 303. Multiple blades 403 are provided and evenly distributed around the circumference of the rotating ring 404. The blades 403 swing synchronously with the rotating ring 404 to actuate the heating ball and plastic.

[0046] In this way, the stirring rack 400 can move the heating ball and plastic inside the pyrolysis cylinder 200, and the stirring rack 400 has a certain buffering effect during rotation, thereby preventing damage to the stirring rack 400. Furthermore, as the stirring rack 400 moves the heating ball and plastic upwards, the spring 402 is compressed, and then the heating ball and plastic fall under their own gravity. The stirring rack 400 vibrates and resets under the action of the spring 402, thus causing the molten plastic adhering to the stirring rack 400 to be flung off, preventing it from adhering to the stirring rack 400 for a long time. The spring 402 is made of a nickel-based alloy material, giving it high strength, corrosion resistance, and non-magnetic properties.

[0047] Furthermore, the feeding end of the pyrolysis cylinder 200 is provided with a conveying cylinder, and the upper part of the conveying cylinder is provided with a feeding port 130. The inside of the conveying cylinder is provided with a conveying auger 140, which is used to convey the plastic entering through the feeding port 130 into the pyrolysis cylinder 200. The slag discharge end of the pyrolysis cylinder 200 is coaxially provided with a screening cylinder 190, which is provided with a slag discharge hole. The lower end of the screening cylinder 190 is provided with a conical cylinder 170, and the axis of the conical cylinder 170 extends in the vertical direction. The carbon black generated in the pyrolysis cylinder 200 falls into the conical cylinder 170 after being filtered through the slag discharge hole.

[0048] Specifically, the ball-scooping hopper 301 is located inside the screening cylinder 190, and it can separate the heated balls from the carbon black during rotation. The screening cylinder 190 has a double-layer hollow structure, with the slag discharge hole located in the inner layer and the outer layer of the screening cylinder 190 facing upwards having an exhaust port 160. The exhaust port 160 is used to discharge the gas produced by pyrolysis, which is further processed to obtain combustible gas and oil. The conical cylinder 170 is located in the outer layer of the screening cylinder 190 facing downwards.

[0049] Furthermore, the pyrolysis cylinder 200 is conical, with the feed end being the larger end and the slag discharge end being the smaller end. The helix angle of the spiral propulsion plate 201 remains constant, resulting in a high linear velocity at the feed end of the pyrolysis cylinder 200. This enhances the stirring effect in the preheating zone and improves the heating uniformity of the plastic in the preheating zone. Simultaneously, it increases the resistance to the movement of the first heating ball towards the slag discharge end, making it easier for the ball to remain in the preheating zone.

[0050] Furthermore, a first drive motor 110 is provided on the frame 100, which is used to drive the pyrolysis cylinder 200 to rotate around its own axis. The output end of the first drive motor 110 is provided with a first transmission gear, and the end of the pyrolysis cylinder 200 is coaxially provided with a second transmission gear. The first transmission gear meshes with the second transmission gear, so that the first drive motor 110 can drive the pyrolysis cylinder 200 to rotate.

[0051] Furthermore, the frame 100 is also equipped with a second drive motor 120, which is used to drive the conveying auger 140 to rotate around the axis of the conveying cylinder. The output shaft of the second drive motor 120 extends into the interior of the conveying cylinder, and the conveying auger 140 is fixedly mounted on the output shaft, so that the second drive motor 120 can drive the conveying auger 140 to rotate.

[0052] Furthermore, the frame 100 is also equipped with a third drive motor 150, which is used to drive the circulation tube 300 to rotate around its own axis. The output end of the third drive motor 150 extends into the circulation tube 300 and is connected to the circulation tube 300 in a transmission manner, so that the third drive motor 150 can drive the circulation tube 300 to rotate.

[0053] Based on the above embodiments, the usage principle and working process of the present invention are as follows:

[0054] The second drive motor 120 is started, and the crushed plastic is fed into the conveying cylinder from the feed port 130. The conveying auger 140 pushes the plastic into the feed end of the pyrolysis cylinder 200. At the same time, the first drive motor 110 is started, and the pyrolysis cylinder 200 rotates around its own axis. The spiral propulsion plate 201 on the inner wall of the pyrolysis cylinder 200 slowly pushes the plastic from the feed end to the slag discharge end. The third drive motor 150 is started, and the circulation pipe 300 rotates. The stirring rack 400 outside the circulation pipe 300 continuously stirs the heating balls deposited at the bottom of the pyrolysis cylinder 200 upwards, and together with the rotation of the pyrolysis cylinder 200, it promotes the full mixing of the heating balls and the plastic. During this process, the three sets of electromagnetic coils 180 sleeved on the outside of the pyrolysis cylinder 200 correspond to the preheating zone, the main pyrolysis zone and the deep pyrolysis zone, respectively, and induction heat the cylinder wall and the heating balls inside the pyrolysis cylinder 200 with progressively increasing power, so that the plastic does not melt in the preheating zone, melts into a liquid in the main pyrolysis zone, and is completely pyrolyzed into carbon black in the deep pyrolysis zone.

[0055] Among them, the first heating ball with the largest diameter mainly stays in the preheating zone, which not only assists in breaking up the plastic to prevent sticking, but also enhances the heating effect on the plastic; the second heating ball with a medium diameter carries the molten plastic into the deep cracking zone under the action of the spiral propulsion plate 201, so that the molten plastic on its surface forms carbon black, which is easy to peel off and keeps it clean; the third heating ball with the smallest diameter has the best heating effect on the plastic due to its large number and large specific surface area, and has a high collision probability, which can play a good crushing role on the carbon black. When a small number of the first heating balls and most of the second and third heating balls move with the plastic to the vicinity of the slag discharge end, the L-shaped ball scooping bucket 301 on the circulation pipe 300 scoops these heating balls up during rotation and sends them into the circulation pipe 300 through the inlet 307. The inner spiral guide plate 302 on the inner wall of the circulation pipe 300, during rotation, conveys these heating balls in the reverse direction from the slag discharge end to the feed end. During the conveying process, the first heating ball falls from the first ball outlet 304, the second heating ball falls from the second ball outlet 305, and the third heating ball falls from the third ball outlet 306. The heating balls fall back to their respective preheating, main pyrolysis, and deep pyrolysis zones, achieving recycling. As the circulation pipe 300 rotates, the stirring rack 400 can move the heating balls and plastic. Simultaneously, the stirring rack 400 vibrates and resets after the heating balls and plastic fall, causing the molten plastic adhering to the stirring rack 400 to be flung off. The carbon black produced by pyrolysis is filtered through the slag discharge holes of the slag discharge end screening cylinder 190 and falls into the lower conical cylinder 170 for discharge. The gas produced by pyrolysis is discharged from the exhaust port 160 and subsequently treated to be converted into combustible gas and oil. Throughout the process, through the combined action of the pyrolysis cylinder 200 and the heating balls, the plastic is heated evenly inside and out, and the pyrolysis reaction is complete, improving the pyrolysis effect.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A low-carbon integrated machine for magnetic wave pyrolysis of municipal solid waste, characterized in that: include: A rack, which is placed on the ground; The pyrolysis cylinder has an axis that extends horizontally and is rotatably mounted on a frame around its own axis. The axial ends of the pyrolysis cylinder are respectively provided with a feed end and a slag discharge end. The inner wall of the pyrolysis cylinder is provided with a spiral propulsion plate, which is used to propel the plastic inside the pyrolysis cylinder from the feed end to the slag discharge end. A heating assembly includes an electromagnetic coil and a heating ball. The electromagnetic coil is coaxially sleeved on the outside of the pyrolysis cylinder, and the heating ball is located inside the pyrolysis cylinder. Both the pyrolysis cylinder and the heating ball can generate heat under the action of the electromagnetic coil to heat the plastic. The circulation assembly includes a circulation pipe, which is coaxially rotatably disposed inside the pyrolysis cylinder. Multiple stirring racks distributed along its axial direction are sleeved on the outside of the circulation pipe. When the circulation pipe rotates, the stirring racks can stir the heating balls deposited at the bottom of the pyrolysis cylinder upward.

2. The integrated low-carbon magnetic wave pyrolysis machine for municipal solid waste according to claim 1, characterized in that, The interior of the pyrolysis cylinder is divided into a preheating zone, a main pyrolysis zone, and a deep pyrolysis zone from the feed end to the slag discharge end. The interior of the pyrolysis cylinder is equipped with heating balls of three different diameters: a first heating ball, a second heating ball, and a third heating ball with decreasing diameters. The first heating ball corresponds to the preheating zone, the second heating ball corresponds to the main pyrolysis zone, and the third heating ball corresponds to the deep pyrolysis zone. The diameter of the first heating ball is greater than the radial protrusion height of the spiral propeller plate, the diameter of the second heating ball is equal to the radial protrusion height of the spiral propeller plate, and the diameter of the third heating ball is less than the radial protrusion height of the spiral propeller plate.

3. The integrated low-carbon magnetic wave pyrolysis machine for municipal solid waste according to claim 1 or 2, characterized in that, The circulation pipe is equipped with a ball-scooping bucket and a ball-inlet at one end near the slag discharge end. The ball-scooping bucket is fixedly installed on the outer circumference of the circulation pipe. When the circulation pipe rotates, it can scoop up the heated balls that have moved to the vicinity of the slag discharge end and allow the heated balls to enter the circulation pipe through the ball-inlet under their own gravity. The inner wall of the circulation pipe is also equipped with an inner spiral guide plate. When the circulation pipe rotates, the inner spiral guide plate transports the heated balls inside the circulation pipe from the slag discharge end to the feed end.

4. The integrated low-carbon magnetic wave pyrolysis machine for municipal solid waste according to claim 3, characterized in that, The circulation pipe has a first ball outlet hole, a second ball outlet hole, and a third ball outlet hole arranged sequentially along the axial direction on its wall. The first ball outlet hole is located in the preheating zone and its diameter is larger than that of the first heating ball. The second ball outlet hole is located in the main pyrolysis zone and its diameter is larger than that of the second heating ball and smaller than that of the first heating ball. The third ball outlet hole is located in the deep pyrolysis zone and its diameter is larger than that of the third heating ball and smaller than that of the second heating ball.

5. The integrated low-carbon magnetic wave pyrolysis machine for municipal solid waste according to claim 4, characterized in that, The stirring rack includes a rotating ring and blades. The rotating ring is coaxially sleeved on the outside of the circulation pipe. Mounting rings are fixedly provided on the outer circumferential surface of the circulation pipe corresponding to the positions of each stirring rack. The mounting rings correspond one-to-one with the rotating rings and rotate in cooperation. An arc-shaped groove is provided on the outer circumferential surface of the mounting ring, and an annular groove is provided on the inner circumferential surface of the rotating ring. The mounting ring is engaged in the annular groove, and a locking block is provided within the annular groove. The end of the locking block extends into the arc-shaped groove, and a spring is provided on one side of the locking block. One end of the spring abuts against the locking block, and the other end abuts against the groove wall of the arc-shaped groove to limit the rotation angle of the rotating ring relative to the mounting ring. Multiple blades are provided and evenly distributed around the circumference of the rotating ring. The blades oscillate synchronously with the rotating ring to agitate the heating ball and plastic.

6. The integrated low-carbon magnetic wave pyrolysis machine for municipal solid waste according to claim 1, characterized in that, The pyrolysis cylinder has a conveying cylinder at its feed end, with a feed inlet at the top and a conveying auger inside to transport the plastic entering through the feed inlet into the pyrolysis cylinder. A screening cylinder is coaxially mounted at the slag discharge end of the pyrolysis cylinder, with a slag discharge hole on it. A conical cylinder is located at the lower end of the screening cylinder, with its axis extending vertically. The carbon black generated inside the pyrolysis cylinder is filtered through the slag discharge hole and falls into the conical cylinder.

7. The integrated low-carbon magnetic wave pyrolysis machine for municipal solid waste according to claim 1, characterized in that, The pyrolysis cylinder is conical, with the feed end being the large end and the slag discharge end being the small end.

8. The integrated low-carbon magnetic wave pyrolysis machine for municipal solid waste according to claim 1, characterized in that, The frame is equipped with a first drive motor, which is used to drive the pyrolysis cylinder to rotate around its own axis.

9. The integrated low-carbon magnetic wave pyrolysis machine for municipal solid waste according to claim 6, characterized in that, The frame is also equipped with a second drive motor, which is used to drive the conveying auger to rotate around the axis of the conveying cylinder.

10. The integrated low-carbon magnetic wave pyrolysis machine for municipal solid waste according to claim 3, characterized in that, The frame is also equipped with a third drive motor, which is used to drive the circulation pipe to rotate around its own axis.

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