Environment-friendly device for recycling waste plastics through cracking

Abstract

This invention discloses an environmentally friendly pyrolysis and recycling device for waste plastics, relating to the field of plastic recycling technology. The device includes a pyrolysis furnace body, which comprises a heating base. A fixed shell is fixedly connected to the surface of the heating base, and a pyrolysis cylinder is rotatably connected to the inner cavity of the fixed shell. This environmentally friendly pyrolysis and recycling device for waste plastics, through the combined use of an air jet unit and a striking unit, can achieve the purpose of removing coking. By mixing coking inhibitors with water and then heating and evaporating the mixture to form steam, the steam containing the coking inhibitors is injected into the pyrolysis furnace, gradually decomposing and consuming the coking layer. The steam can also react with metals such as iron and nickel on the inner surface of the pyrolysis furnace to form a protective film, reducing the catalytic effect of these metals on the coking reaction. This makes it less likely for excessive coking to occur inside the pyrolysis furnace during use, allowing for a more uniform temperature inside the furnace and enabling more stable pyrolysis of waste plastics.

Description

Technical Field

[0001] This invention relates to the field of plastic recycling technology, specifically to an environmentally friendly pyrolysis and recycling device for waste plastics. Background Technology

[0002] Waste plastic pyrolysis recycling is a chemical recycling method that decomposes waste plastics into small molecule compounds by heating them at high temperatures under anaerobic or oxygen-deficient conditions. This method can effectively process mixed waste plastics. Pyrolysis recycling requires a pyrolysis recycling device, such as a pyrolysis furnace, to heat and pyrolyze the waste plastics, and then prepare a liquid hydrocarbon mixture through subsequent processes.

[0003] In existing pyrolysis and recycling devices, a coke layer easily forms on the inner wall of the furnace tubes during the pyrolysis process, hindering heat transfer. This leads to uneven temperature distribution within the furnace, with some areas experiencing excessively high temperatures while others remain too cold. Consequently, the pyrolysis efficiency of waste plastics is affected, resulting in a reduced yield of liquid hydrocarbon mixtures, an increased proportion of solid residue, and a lower quality of the pyrolyzed liquid hydrocarbon mixture. Therefore, we propose an environmentally friendly pyrolysis and recycling device for waste plastics.

[0004] Combining the above issues, we find that existing pyrolysis and recycling devices on the market cannot simultaneously avoid the problems mentioned above. Even if they can solve these problems, they require external tools to achieve the desired results. Therefore, we propose an environmentally friendly pyrolysis and recycling device for waste plastics. Summary of the Invention

[0005] The purpose of this invention is to provide an environmentally friendly pyrolysis and recycling device for waste plastics to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly pyrolysis and recycling device for waste plastics, comprising a pyrolysis furnace body, the pyrolysis furnace body comprising a heating base, a fixed shell fixedly connected to the surface of the heating base, a pyrolysis cylinder rotatably connected to the inner cavity of the fixed shell, a sealing plate fixedly connected to one side of the pyrolysis cylinder by bolts, and a decoking mechanism provided on one side of the heating base. The decoking mechanism includes an air jet unit, which is disposed inside the pyrolysis cylinder. The decoking mechanism further includes a striking unit disposed on the surface of the jet unit; The pyrolysis cylinder is equipped with a scraping mechanism inside its cavity.

[0007] Preferably, the jet unit includes a water tank, one side of which is fixedly connected to one side of the heating base. A spiral tube is fixedly connected to the inner cavity of the heating base. A conveying shell is fixedly connected to the surface of the water tank. A dual-axis motor is fixedly connected to one side of the conveying shell. One output end of the dual-axis motor passes through the inner cavity of the conveying shell and is fixedly connected to an impeller. A steam shell is fixedly connected to the surface of the water tank. A linkage rod is fixedly connected to one output of the dual-axis motor. One end of the linkage rod passes through the inner cavity of the steam shell. A guide fan blade is provided in the inner cavity of the steam shell. A short rod is fixedly connected to the surface of the guide fan blade.

[0008] Preferably, one end of the short rod and one end of the linkage rod are both fixedly connected to bevel gears, the two bevel gears mesh with each other, a telescopic tube is fixedly connected to the surface of the steam shell, one end of the telescopic tube is fixedly connected to a connecting pipe, one end of the connecting pipe is fixedly connected to a rotary joint, one end of the rotary joint is fixedly connected to a connecting pipe, a rotating column is fixedly sleeved on the surface of the connecting pipe, one end of the rotating column passes through to one side of the sealing plate and is fixedly connected to a plug ring, the connection between the rotating column and the sealing plate is rotatably connected, a drive motor is fixedly connected to one side of the sealing plate, a synchronous pulley is fixedly sleeved on the output end of the drive motor and the surface of the rotating column, and a synchronous belt is connected to the surfaces of the two synchronous pulleys for transmission.

[0009] Preferably, four insert rods are fixedly connected to the surface of the insert ring, and limit rings are fixedly connected to both sides of the inner cavity of the pyrolysis cylinder. A hollow rotating ring is rotatably connected to the inner cavity of the limit ring. Four insertion holes for use with the insert rods are opened on the surface of one of the hollow rotating rings. Two insert cylinders are fixedly connected to the surface of one of the hollow rotating rings. Insert tubes are inserted into the inner cavity of the insert cylinders. One end of each of the two insert tubes is fixedly connected to the surface of the connecting pipe. Telescopic sleeves are fixedly connected to the surfaces of both hollow rotating rings. A rectangular jet pipe is fixedly connected between the two telescopic sleeves. Several conical air outlets are fixedly connected to the surface of the rectangular jet pipe. Extrusion rods are fixedly connected to both sides of the rectangular jet pipe. Mounting rings are fixedly embedded on both sides of the inner cavity of the pyrolysis cylinder. Several protrusions are fixedly connected to the surface of the mounting rings. The water inlet end of the conveying shell extends into the inner cavity of the water storage tank. A stabilizing block is fixedly connected to the surface of the hollow rotating ring.

[0010] Preferably, the water outlet end of the conveying shell is fixedly connected to a conveying pipe, one end of the conveying pipe passes through the inner cavity of the heating base and is fixedly connected to the liquid inlet end of the spiral tube, the liquid outlet end of the spiral tube is fixedly connected to a water outlet pipe, one end of the water outlet pipe passes through the outer side of the heating base and is fixedly connected to the surface of the steam shell, a support rod is fixedly connected to the surface of the water storage tank, a semi-circular buckle is fixedly connected to one end of the support rod, the semi-circular buckle is snapped onto the surface of the connecting pipe, and a fixing ring is rotatably sleeved on the surface of the guide fan blade, both ends of the fixing ring are fixedly connected to the inner wall of the steam shell.

[0011] Preferably, the striking unit includes two gear rings, which are respectively fixedly connected to both sides of the inner cavity of the pyrolysis cylinder. The inner cavity of the gear rings is engaged with a linkage gear, and the surfaces of the two hollow rotating rings are fixedly connected with mounting plates.

[0012] Preferably, hollow cylinders are rotatably connected inside the two mounting plates, and a striking rod is movably connected to the inner cavity of the two hollow cylinders. Several striking heads are fixedly connected to the surface of the striking rod.

[0013] Preferably, a torsion spring is fixedly connected to the inner cavity of the hollow cylinder, one end of the torsion spring is fixedly connected to the surface of the striking rod, a plurality of cylindrical rods are fixedly connected to the surface of the gear ring, two actuating plates are fixedly connected to the surface of the striking rod, and the two linkage gears are respectively fixedly sleeved on the surfaces of the two hollow cylinders.

[0014] Preferably, the scraping mechanism includes a scraping plate disposed in the inner cavity of the pyrolysis cylinder, and a plurality of vertical plates are fixedly connected to the surface of the scraping plate, the vertical plates being perpendicular to the scraping plate, and two arc plates are fixedly connected to the surface of the rectangular jet pipe.

[0015] Preferably, one end of the two curved plates is fixedly connected to a long plate, a movable rod is provided on one side of the long plate, one end of the movable rod extends through to one side of the long plate, a spring is movably sleeved on the surface of the movable rod, and the two ends of the spring are fixedly connected to the surfaces of the long plate and the scraping plate, respectively.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves coking removal by combining a jetting unit and a striking unit. Coking inhibitors are mixed with water and then heated to evaporate, forming steam. This steam, containing the coking inhibitors, is injected into the pyrolysis furnace, gradually decomposing and consuming the coking layer. The steam also reacts with metals such as iron and nickel on the furnace's inner surface to form a protective film, reducing the catalytic effect of these metals on the coking reaction. This prevents excessive coking from forming inside the furnace, ensuring uniform temperature and more stable pyrolysis of waste plastics. This maximizes the pyrolysis efficiency of the waste plastics and maintains the quality of the resulting liquid hydrocarbon mixture.

[0017] This invention, by setting up a scraping mechanism, can further improve the decoking effect. It can scrape off the coke on the inner wall of the pyrolysis furnace, preventing the coke from sticking to the furnace wall, thereby further ensuring the uniformity of temperature inside the pyrolysis furnace. This allows the pyrolysis furnace to pyrolyze waste plastics more stably, improving the pyrolysis effect of waste plastics. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the pyrolysis cylinder of the present invention; Figure 3 This is a schematic diagram of the water storage tank of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of A in the middle; Figure 5 This is a schematic diagram of the structure of the insertion ring of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of B in the middle; Figure 7 This is a schematic diagram of the exploded structure of the hollow rotating ring of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of B in the middle; Figure 9 This is a partial structural schematic diagram of the jet unit of the present invention; Figure 10 This is a cross-sectional view of the hollow cylinder of the present invention; Figure 11 This is a schematic diagram of the scraping mechanism of the present invention; Figure 12 For the present invention Figure 11 A magnified view of D.

[0019] In the diagram: 1. Cracking furnace body; 101. Heating base; 102. Cracking cylinder; 103. Sealing plate; 104. Fixed shell; 2. Decoking mechanism; 21. Jet unit; 2101. Conveying shell; 2102. Dual-shaft motor; 2103. Linkage rod; 2104. Steam shell; 2105. Water tank; 2106. Support rod; 2107. Telescopic pipe; 2108. Connecting pipe; 2109. Rotary joint; 2110. Spiral tube; 2111. Impeller; 2112. Water outlet pipe; 2113. Conveying pipe; 2114. Semi-circular buckle; 2115. Guide fan blade; 2116. Fixed ring; 2117. Short rod; 2118. Bevel gear; 2119. Insert cylinder; 2120. Insert pipe; 2121. Rotating column; 2122. Insert ring; 2123. Insert rod; 2124. 2125. Rectangular jet pipe; 2126. Protrusion; 2127. Mounting ring; 2128. Hollow rotating ring; 2129. Drive motor; 2120. Synchronous pulley; 2131. Synchronous belt; 2132. Connecting pipe; 2133. Extrusion rod; 2134. Telescopic sleeve; 2135. Limiting ring; 2136. Stabilizing block; 2137. Insertion hole; 2138. Conical exhaust head; 219. Striking single... 2201. Gear ring; 2202. Cylindrical rod; 2203. Mounting plate; 2204. Striking head; 2205. Striking rod; 2206. Hollow cylinder; 2207. Linkage gear; 2208. Torsion spring; 2209. Actuating plate; 3. Scraping mechanism; 301. Curved plate; 302. Scraping plate; 303. Vertical plate; 304. Long plate; 305. Moving rod; 306. Spring. Detailed Implementation

[0020] 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.

[0021] Example 1: Please refer to Figures 1-12 The present invention provides a technical solution: an environmentally friendly pyrolysis and recycling device for waste plastics, including a pyrolysis furnace body 1, the pyrolysis furnace body 1 including a heating base 101, a fixed shell 104 fixedly connected to the surface of the heating base 101, a pyrolysis cylinder 102 rotatably connected to the inner cavity of the fixed shell 104, a sealing plate 103 fixedly connected to one side of the pyrolysis cylinder 102 by bolts, and a decoking mechanism 2 provided on one side of the heating base 101. The pyrolysis furnace body 1 heats the pyrolysis cylinder 102 through the heating base 101, thereby heating and pyrolyzing the waste plastics added to the pyrolysis cylinder 102. This is the prior art and will not be described here. The decoking mechanism 2 includes an air jet unit 21, which is disposed in the inner cavity of the pyrolysis cylinder 102; The decoking mechanism 2 also includes a striking unit 22, which is disposed on the surface of the jet unit 21.

[0022] As a further limitation of the present invention, one side of the water tank 2105 is fixedly connected to one side of the heating base 101, a spiral tube 2110 is fixedly connected to the inner cavity of the heating base 101, a conveying shell 2101 is fixedly connected to the surface of the water tank 2105, a dual-axis motor 2102 is fixedly connected to one side of the conveying shell 2101, one output end of the dual-axis motor 2102 penetrates into the inner cavity of the conveying shell 2101 and is fixedly connected to an impeller 2111, a steam shell 2104 is fixedly connected to the surface of the water tank 2105, and a linkage rod 2103 is fixedly connected to one output of the dual-axis motor 2102. One end of 2103 extends into the inner cavity of the steam shell 2104. The inner cavity of the steam shell 2104 is provided with a guide fan blade 2115. A short rod 2117 is fixedly connected to the surface of the guide fan blade 2115. By setting the guide fan blade 2115, the evaporated water vapor can be guided into the telescopic tube 2107 and finally into the pyrolysis cylinder 102, where it is sprayed onto the inner wall of the pyrolysis cylinder 102 to remove coking. This makes it less prone to coking on the inner wall of the pyrolysis cylinder 102, ensuring the stability of the temperature inside the pyrolysis cylinder 102 and enabling it to more effectively pyrolyze waste plastics.

[0023] Both one end of the short rod 2117 and one end of the linkage rod 2103 are fixedly connected to bevel gears 2118, which mesh with each other. A telescopic pipe 2107 is fixedly connected to the surface of the steam shell 2104. One end of the telescopic pipe 2107 is fixedly connected to a connecting pipe 2108, and one end of the connecting pipe 2108 is fixedly connected to a rotary joint 2109. One end of the rotary joint 2109 is fixedly connected to a connecting pipe 2131. A rotating column 2121 is fixedly fitted onto the surface of the connecting pipe 2131. One end of the rotating column 2121 extends through to one side of the sealing plate 103 and is fixedly connected to a retaining ring 2122. The rotating column 2121 is rotatably connected to the sealing plate 103. A drive motor 2128 is fixedly connected to one side of the sealing plate 103. Both the output end and the surface of the rotating column 2121 are fixedly fitted with synchronous pulleys 2129. The surfaces of the two synchronous pulleys 2129 are connected to a synchronous belt 2130 for transmission. By setting a plug ring 2122, after the sealing plate 103 is installed on one side of the pyrolysis cylinder 102, the plug ring 2122 can be connected to the hollow rotating ring 2127, so that the plug ring 2122 can drive the hollow rotating ring 2127 to rotate, and the rectangular jet pipe 2124 can rotate around the inner wall of the pyrolysis cylinder 102. The sprayed water vapor containing coking inhibitor can effectively remove coking in the pyrolysis cylinder 102, ensuring the effect of removing coking in the pyrolysis cylinder 102. This allows the pyrolysis cylinder 102 to pyrolyze waste plastics more efficiently, ensuring the effect of pyrolysis treatment of waste plastics.

[0024] Four insert rods 2123 are fixedly connected to the surface of the insert ring 2122. Limiting rings 2134 are fixedly connected to both sides of the inner cavity of the pyrolysis cylinder 102. A hollow rotating ring 2127 is rotatably connected to the inner cavity of the limiting ring 2134. Four insertion holes 2136 for use with the insert rods 2123 are opened on the surface of one of the hollow rotating rings 2127. Two insert cylinders 2119 are fixedly connected to the surface of one of the insert cylinders 2119. Insert tubes 2120 are inserted into the inner cavity of each insert cylinder 2119. One end of each insert tube 2120 is fixedly connected to the surface of the connecting pipe 2131. Telescopic sleeves 2133 are fixedly connected to the surfaces of both hollow rotating rings 2127. A rectangular jet pipe 2124 is fixedly connected between the two telescopic sleeves 2133. The surface of the 4 is fixedly connected with several conical air outlets 2137. Both sides of the rectangular jet pipe 2124 are fixedly connected with extrusion rods 2132. Both sides of the inner cavity of the pyrolysis cylinder 102 are fixedly embedded with mounting rings 2126. Several protrusions 2125 are fixedly connected to the surface of the mounting rings 2126. The water inlet end of the conveying shell 2101 extends into the inner cavity of the water storage tank 2105. The surface of the hollow rotating ring 2127 is fixedly connected with a stabilizing block 2135. By setting the stabilizing block 2135, the hollow rotating ring 2127 can rotate stably within the limiting ring 2134, so that the rectangular jet pipe 2124 can stably spray steam to remove coking in the pyrolysis cylinder 102, reducing the generation of coking in the pyrolysis cylinder 102, and enabling the waste plastic in the pyrolysis cylinder 102 to be effectively pyrolyzed.

[0025] The water outlet of the conveying shell 2101 is fixedly connected to the conveying pipe 2113. One end of the conveying pipe 2113 passes through the inner cavity of the heating base 101 and is fixedly connected to the liquid inlet of the spiral tube 2110. The liquid outlet of the spiral tube 2110 is fixedly connected to the water outlet pipe 2112. One end of the water outlet pipe 2112 passes through the outer side of the heating base 101 and is fixedly connected to the surface of the steam shell 2104. The surface of the water tank 2105 is fixedly connected to the support rod 2106. One end of the support rod 2106 is fixedly connected to the semi-circular buckle 2114. The semi-circular buckle 2114 is snapped onto the surface of the connecting pipe 2108. The surface of the guide fan blade 2115 is rotated and fitted with a fixing ring 2116. Both ends of the fixing ring 2116 are fixedly connected to the inner wall of the steam shell 2104.

[0026] The striking unit 22 includes two gear rings 2201, which are fixedly connected to both sides of the inner cavity of the pyrolysis cylinder 102. The inner cavity of the gear rings 2201 is meshed with a linkage gear 2207. The surfaces of the two hollow rotating rings 2127 are fixedly connected with mounting plates 2203. By setting the mounting plates 2203, the hollow cylinder 2206 can be supported, so that the hollow cylinder 2206 can rotate with the hollow rotating rings 2127, allowing the striking head 2204 to strike the inner wall of the pyrolysis cylinder 102, making it easier for the coking inside to fall off, thus improving the coking removal effect.

[0027] Hollow cylinders 2206 are rotatably connected inside the two mounting plates 2203. A striking rod 2205 is movably connected to the inner cavity of the two hollow cylinders 2206. Several striking heads 2204 are fixedly connected to the surface of the striking rod 2205.

[0028] A torsion spring 2208 is fixedly connected to the inner cavity of the hollow cylinder 2206. One end of the torsion spring 2208 is fixedly connected to the surface of the striking rod 2205. Several cylindrical rods 2202 are fixedly connected to the surface of the gear ring 2201. Two actuating plates 2209 are fixedly connected to the surface of the striking rod 2205. Two linkage gears 2207 are respectively fixedly sleeved on the surfaces of the two hollow cylinders 2206.

[0029] By using the jetting unit 21 and the striking unit 22 in combination, the purpose of removing coking can be achieved. By mixing coking inhibitor with water and then heating and evaporating it to form steam, the steam containing coking inhibitor is injected into the pyrolysis furnace, gradually decomposing and consuming the coking layer. The steam can also react with metals such as iron and nickel on the inner surface of the pyrolysis furnace to form a protective film, reducing the catalytic effect of these metals on the coking reaction. This makes it less likely for excessive coking to occur inside the pyrolysis furnace during use, allowing the temperature inside the pyrolysis furnace to be uniform, enabling more stable pyrolysis of waste plastics, ensuring that the waste plastics are fully pyrolyzed, guaranteeing the pyrolysis efficiency of waste plastics, and ensuring the quality of the liquid hydrocarbon mixture produced by pyrolysis.

[0030] The specific implementation method of this embodiment is as follows: When recycling waste plastic through pyrolysis, the sealing plate 103 is in the removed state. Waste plastic is added into the pyrolysis cylinder 102, and water mixed with coking inhibitor is added to the water tank 2105. At the same time, the water mixed with coking inhibitor can be added to the conveying shell 2101 through the water filling hole. After the addition is completed, the sealing plate 103 is placed on one side of the pyrolysis cylinder 102 and fixed to the pyrolysis cylinder 102 by bolts on the surface of the pyrolysis cylinder 102. Before fixing, the connecting pipe 2108 is inserted into the semi-circular buckle 2114 to limit and support the connecting pipe 2108. At the same time, when the sealing plate 103 is attached to the feed port of the pyrolysis cylinder 102, the insert ring 2122 follows into the pyrolysis cylinder 102. This allows the insertion rod 2123 on the insertion ring 2122 to be inserted into the insertion hole 2136, thereby connecting the insertion ring 2122 to the hollow rotating ring 2127. Simultaneously, the insertion tube 2120 can be inserted into the insertion cylinder 2119. The pyrolysis cylinder 102 is heated by the heating base 101, and the pyrolysis cylinder 102 rotates via its own drive mechanism, thus pyrolyzing the waste plastic inside. Simultaneously, the dual-shaft motor 2102 is activated by an external controller and power supply. One output of the dual-shaft motor 2102 drives the impeller 2111 to rotate, thereby extracting water mixed with coking inhibitors from the water tank 2105. The water enters the conveying pipe 2113 and then the spiral tube 21. Within the spiral tube 2110, water is heated by the heating base 101 to generate steam. The water and steam then enter the outlet pipe 2112, which in turn feeds into the steam shell 2104. The water then flows back into the storage tank. When the dual-shaft motor 2102 is running, the linkage rod 2103 rotates with one of its output ends, causing the bevel gear 2118 on its surface to rotate. This, in turn, drives the short rod 2117 to rotate, causing the guide fan blade 2115 to rotate. This allows steam to enter the telescopic tube 2107, then flows through the connecting pipe 2108 and through the rotary joint 2109 into the connecting pipe 2131. Finally, it is fed into the insert tube 2119 through the insertion tube 2120, thus evaporating the steam. Gas can enter the hollow rotating ring 2127 and is then conveyed into the rectangular jet pipe 2124 through the telescopic sleeve 2133. The conical gas outlet 2137 blows out water vapor containing coking inhibitors onto the inner wall of the pyrolysis cylinder 102. The water vapor consumes some of the coke, reducing coke deposition on the reactor wall and thus removing coke. The water vapor also reacts with metals such as iron and nickel on the surface of the pyrolysis furnace, forming a protective film that reduces the catalytic effect of these metals on the coking reaction, further slowing down the coking rate. The high-speed flow of water vapor through the furnace tubes creates a strong scouring effect on the coke layer, breaking down its structure and making it loose and easier to detach. Simultaneously, it powers the drive motor 2128.The rotating column 2121 is rotated by the synchronous pulley 2129 and the synchronous belt 2130. The rotating column 2121 drives the insert ring 2122 to rotate. When the insert ring 2122 rotates, it drives the hollow rotating ring 2127 to rotate within the limiting ring 2134, thereby causing the rectangular jet pipe 2124 to rotate around the inner wall of the pyrolysis cylinder 102, allowing steam to effectively cover the pyrolysis cylinder 102. When the rotating column 2121 rotates, the rotating joint 2109 allows the connecting pipe 2131 to rotate along with it without affecting steam delivery. When the hollow rotating ring 2127 rotates... The extrusion rods 2132 at both ends of the rectangular jet pipe 2124 repeatedly contact the protrusions 2125. Because the protrusions 2125 on both sides of the pyrolysis cylinder 102 are staggered, when one extrusion rod 2132 contacts the protrusion 2125, the other extrusion rod 2132 contacts the surface of the mounting ring 2126. Through the repeated contact between the two extrusion rods 2132 and the protrusions 2125 and mounting ring 2126, the rectangular jet pipe 2124 can be reciprocated. Simultaneously, the telescopic sleeve 2133 extends and retracts to transport steam, without affecting the rectangular jet pipe 2124. The movement of the rectangular jet pipe 2124 allows it to more effectively cover the inner wall of the pyrolysis cylinder 102, ensuring the steam decoking effect. Simultaneously, the rotation of the hollow rotating ring 2127 drives the mounting plate 2203 to rotate, causing the linkage gear 2207 to roll within the gear ring 2201, thereby rotating the hollow cylinder 2206. This allows the striking rod 2205 to rotate, enabling the striking head 2204 to strike the inner wall of the pyrolysis cylinder 102. As the mounting plate 2203 rotates with the hollow rotating ring 2127, the actuating plate 2209 intermittently interacts with multiple cylindrical rods 220... The contact between the cylindrical rod 2202 and the striking rod 2205 causes the striking rod 2205 to rotate within the hollow cylinder 2206, thus twisting the torsion spring 2208. When the actuating plate 2209 disengages from the cylindrical rod 2202, the torsion spring 2208 returns to its original position, causing the striking rod 2205 to rotate. This allows the striking head 2204 to simultaneously strike while rotating, accumulating force to ensure that the striking head 2204 can more effectively knock off the coking deposits, further ensuring the coking removal effect within the pyrolysis cylinder 102 and guaranteeing that the pyrolysis cylinder 102 can stably pyrolyze and recycle waste plastics.

[0031] Example 2: Please refer to Figures 1-12 The present invention provides a technical solution: an environmentally friendly pyrolysis and recycling device for waste plastics. The present invention makes corresponding improvements to the technical problems mentioned in the background art.

[0032] As a further limitation of the present invention, the inner cavity of the pyrolysis cylinder 102 is provided with a scraping mechanism 3; The scraping mechanism 3 includes a scraping plate 302, which is disposed in the inner cavity of the pyrolysis cylinder 102. Several vertical plates 303 are fixedly connected to the surface of the scraping plate 302. The vertical plates 303 are perpendicular to the scraping plate 302. Two curved plates 301 are fixedly connected to the surface of the rectangular jet pipe 2124. By setting the curved plates 301, the scraping plate 302 can be connected to the rectangular jet pipe 2124. The scraping plate 302 can move along with the rectangular jet pipe 2124 as it moves back and forth, so that the scraping plate 302 can fully scrape off the coking on the inner wall of the pyrolysis cylinder 102. This makes the coking in the pyrolysis cylinder 102 more effective and improves the coking removal effect. It also allows the pyrolysis cylinder 102 to heat and pyrolyze the waste plastic evenly, ensuring the pyrolysis effect.

[0033] Two curved plates 301 are fixedly connected to a long plate 304 at one end. A moving rod 305 is provided on one side of the long plate 304. One end of the moving rod 305 extends through to one side of the long plate 304. A spring 306 is movably sleeved on the surface of the moving rod 305. The two ends of the spring 306 are fixedly connected to the surfaces of the long plate 304 and the scraping plate 302, respectively.

[0034] By setting up the scraping mechanism 3, the purpose of further improving the removal of coking can be achieved. It can scrape off the coking on the inner wall of the pyrolysis furnace, preventing the coking from sticking to the furnace wall, thereby further ensuring the uniformity of temperature inside the pyrolysis furnace. This allows the pyrolysis furnace to pyrolyze waste plastics more stably and improves the pyrolysis effect of waste plastics.

[0035] The specific implementation of this embodiment is as follows: When the rectangular jet pipe 2124 rotates, it can drive the arc plate 301 to rotate, allowing the scraper plate 302 to rotate around the inside of the pyrolysis cylinder 102, thereby scraping off the coking inside the pyrolysis cylinder 102. At the same time, through the spring 306 and the moving rod 305, the scraper plate 302 can effectively adapt to the coking thickness, thereby performing efficient scraping. When the rectangular jet pipe 2124 moves back and forth, it drives the arc plate 301 to drive the scraper plate 302 to move back and forth, allowing the vertical plate 303 to reciprocate to scrape the inner wall of the pyrolysis cylinder 102, ensuring the effect of removing coking from the inner wall of the pyrolysis cylinder 102, thereby ensuring the effect of the pyrolysis cylinder 102 on the pyrolysis of waste plastics.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] 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 waste plastic environmental protection pyrolysis and recycling device, comprising a pyrolysis furnace body (1), characterized in that: The pyrolysis furnace body (1) includes a heating base (101), a fixed shell (104) is fixedly connected to the surface of the heating base (101), a pyrolysis cylinder (102) is rotatably connected to the inner cavity of the fixed shell (104), a sealing plate (103) is fixedly connected to one side of the pyrolysis cylinder (102) by bolts, and a decoking mechanism (2) is provided on one side of the heating base (101). The decoking mechanism (2) includes an air jet unit (21), which is disposed in the inner cavity of the pyrolysis cylinder (102); The decoking mechanism (2) further includes a striking unit (22), which is disposed on the surface of the jet unit (21); The inner cavity of the pyrolysis cylinder (102) is provided with a scraping mechanism (3).

2. The waste plastic environmental pyrolysis and recycling device according to claim 1, characterized in that: The jet unit (21) includes a water tank (2105), one side of which is fixedly connected to one side of a heating base (101). A spiral tube (2110) is fixedly connected to the inner cavity of the heating base (101). A conveying shell (2101) is fixedly connected to the surface of the water tank (2105). A dual-axis motor (2102) is fixedly connected to one side of the conveying shell (2101). One output end of the dual-axis motor (2102) extends through the conveying shell (2101). The inner cavity of the 01) is fixedly connected to an impeller (2111), the surface of the water tank (2105) is fixedly connected to a steam shell (2104), one of the outputs of the dual-shaft motor (2102) is fixedly connected to a linkage rod (2103), one end of the linkage rod (2103) penetrates into the inner cavity of the steam shell (2104), the inner cavity of the steam shell (2104) is provided with a guide fan blade (2115), and a short rod (2117) is fixedly connected to the surface of the guide fan blade (2115).

3. The waste plastic environmental pyrolysis and recycling device according to claim 2, characterized in that: One end of the short rod (2117) and one end of the linkage rod (2103) are both fixedly connected to bevel gears (2118), and the two bevel gears (2118) mesh with each other. A telescopic tube (2107) is fixedly connected to the surface of the steam shell (2104). One end of the telescopic tube (2107) is fixedly connected to a connecting tube (2108). One end of the connecting tube (2108) is fixedly connected to a rotary joint (2109). One end of the rotary joint (2109) is fixedly connected to a connecting tube (2131). The surface of the connecting tube (2131) is fixedly connected to a connecting tube (2131). A rotating column (2121) is fixedly mounted. One end of the rotating column (2121) extends through to one side of the sealing plate (103) and is fixedly connected to a retaining ring (2122). The rotating column (2121) is rotatably connected to the sealing plate (103). A drive motor (2128) is fixedly connected to one side of the sealing plate (103). Synchronous pulleys (2129) are fixedly mounted on the output end of the drive motor (2128) and the surface of the rotating column (2121). The surfaces of the two synchronous pulleys (2129) are connected to a synchronous belt (2130) for transmission.

4. The waste plastic environmental pyrolysis and recycling device according to claim 3, characterized in that: Four insert rods (2123) are fixedly connected to the surface of the insert ring (2122). Limiting rings (2134) are fixedly connected to both sides of the inner cavity of the pyrolysis cylinder (102). Hollow rotating rings (2127) are rotatably connected to the inner cavity of the limiting rings (2134). Four insertion holes (2136) for use with the insert rods (2123) are opened on the surface of one of the hollow rotating rings (2127). Two insert cylinders (2119) are fixedly connected to the surface of one of the hollow rotating rings (2127). Insert tubes (2120) are inserted into the inner cavity of the insert cylinders (2119). One end of each of the two insert tubes (2120) is fixedly connected to the surface of the connecting tube (2131). The two hollow rotating rings (2127) are fixedly connected to the surface of the connecting tube (2131). The surface of the pyrolysis cylinder (102) is fixedly connected with a telescopic sleeve (2133), and a rectangular jet pipe (2124) is fixedly connected between the two telescopic sleeves (2133). The surface of the rectangular jet pipe (2124) is fixedly connected with several conical air outlets (2137). Both sides of the rectangular jet pipe (2124) are fixedly connected with extrusion rods (2132). Both sides of the inner cavity of the pyrolysis cylinder (102) are fixedly embedded with mounting rings (2126). The surface of the mounting rings (2126) is fixedly connected with several protrusions (2125). The water inlet end of the conveying shell (2101) extends into the inner cavity of the water storage tank (2105). The surface of the hollow rotating ring (2127) is fixedly connected with a stabilizing block (2135).

5. The waste plastic environmental pyrolysis and recycling device according to claim 4, characterized in that: The water outlet end of the conveying shell (2101) is fixedly connected to the conveying pipe (2113). One end of the conveying pipe (2113) passes through the inner cavity of the heating base (101) and is fixedly connected to the liquid inlet end of the spiral tube (2110). The liquid outlet end of the spiral tube (2110) is fixedly connected to the water outlet pipe (2112). One end of the water outlet pipe (2112) passes through the outer side of the heating base (101) and is fixedly connected to the surface of the steam shell (2104). The surface of the water storage tank (2105) is fixedly connected to the support rod (2106). One end of the support rod (2106) is fixedly connected to the semi-circular buckle (2114). The semi-circular buckle (2114) is snapped onto the surface of the connecting pipe (2108). The surface of the guide fan blade (2115) is rotatably fitted with a fixing ring (2116). Both ends of the fixing ring (2116) are fixedly connected to the inner wall of the steam shell (2104).

6. The waste plastic environmental pyrolysis and recycling device according to claim 4, characterized in that: The striking unit (22) includes two gear rings (2201), which are fixedly connected to both sides of the inner cavity of the pyrolysis cylinder (102). The inner cavity of the gear rings (2201) is meshed with a linkage gear (2207), and the surfaces of the two hollow rotating rings (2127) are fixedly connected with mounting plates (2203).

7. The waste plastic environmental pyrolysis and recycling device according to claim 6, characterized in that: Hollow cylinders (2206) are rotatably connected inside the two mounting plates (2203), and a striking rod (2205) is movably connected to the inner cavity of the two hollow cylinders (2206). Several striking heads (2204) are fixedly connected to the surface of the striking rod (2205).

8. The waste plastic environmental pyrolysis and recycling device according to claim 7, characterized in that: A torsion spring (2208) is fixedly connected to the inner cavity of the hollow cylinder (2206). One end of the torsion spring (2208) is fixedly connected to the surface of the striking rod (2205). Several cylindrical rods (2202) are fixedly connected to the surface of the gear ring (2201). Two actuating plates (2209) are fixedly connected to the surface of the striking rod (2205). Two linkage gears (2207) are respectively fixedly sleeved on the surfaces of the two hollow cylinders (2206).

9. The waste plastic environmental pyrolysis and recycling device according to claim 4, characterized in that: The scraping mechanism (3) includes a scraping plate (302), which is disposed in the inner cavity of the pyrolysis cylinder (102). Several vertical plates (303) are fixedly connected to the surface of the scraping plate (302), and the vertical plates (303) are perpendicular to the scraping plate (302). Two arc plates (301) are fixedly connected to the surface of the rectangular jet pipe (2124).

10. The waste plastic environmental pyrolysis and recycling device according to claim 9, characterized in that: One end of each of the two curved plates (301) is fixedly connected to a long plate (304). A movable rod (305) is provided on one side of the long plate (304). One end of the movable rod (305) extends through to one side of the long plate (304). A spring (306) is movably sleeved on the surface of the movable rod (305). The two ends of the spring (306) are fixedly connected to the surfaces of the long plate (304) and the scraper plate (302), respectively.

Images