Waste plastic thermal cracking continuous feeding device and system

Abstract

The invention relates to the technical field of oil decomposition, and provides a waste plastic thermal cracking continuous feeding device and system.The waste plastic thermal cracking continuous feeding device comprises a continuous feeding device body and a heating cracking device, the continuous feeding device body further comprises a storage device used for storing materials, and a charging control valve is arranged between a first discharging pipe and a storage cavity; the lower end of the storage cavity is provided with a discharging control valve, the other end of the second discharging pipe is connected with a feeding machine in a sealed mode, the feeding machine is provided with a heating mechanism used for heating, the heating mechanism comprises a preheating mechanism and a ripening mechanism, and the preheating mechanism and the ripening mechanism are located between the second discharging pipe and a third discharging pipe. And meanwhile, the storage device is matched to prevent oil smoke leakage, the time for softening and curing the waste plastics in the cracking cavity is shortened through the preheating mechanism and the ripening mechanism, the working efficiency is improved, and the working time is shortened.

Description

Technical Field

[0001] The invention belongs to the technical field of oil decomposition, and in particular relates to a waste plastic thermal cracking continuous feeding device and system. Background Art

[0002] The existing waste plastics such as thermosetting plastics, plastic bags, and plastic garbage bags are recycled through thermal cracking to recover diesel, gasoline, gas and other oil products for reuse. The existing waste plastics are transported to the reactor through a feeding device, and the reactor is heated by a heating device, so that the waste plastics are heated and cracked in the reactor, and the oil (diesel, gasoline) in the oil smoke is fractionated through a distillation device, so as to achieve the purpose of decomposing the waste plastics and recovering the oil. After the decomposition is completed, the waste residue needs to be discharged.

[0003] However, waste plastics need to be softened and matured before the cracking reaction will start to produce oil smoke. Directly adding waste plastics into the cracking kettle for cracking will affect the heating and cracking time of the waste plastics, thereby affecting the efficiency of oil recovery. Generally, waste plastics are directly fed into the cracking kettle through a screw feeder, and gaps are easily generated between the waste plastics and the inner wall of the feeding pipe, resulting in the leakage of oil smoke, causing environmental pollution, and affecting the recovery rate of oil products. Summary of the invention

[0004] In view of this, the present invention provides a waste plastic thermal cracking continuous feeding device and system, which starts the second driving component to transport the waste plastic from the lower end to the third discharge pipe through the second spiral feeder to realize the function of automatic feeding, and cooperates with the storage device to prevent the leakage of oil smoke. The material in the second feeding pipe is preheated by the preheating mechanism, and then the material in the second feeding pipe is heated by high temperature through the ripening mechanism, thereby shortening the softening and ripening time of the waste plastic in the cracking chamber, improving work efficiency, and shortening working time.

[0005] The technical scheme is as follows: a waste plastic thermal cracking continuous feeding device, comprising a continuous feeding device and a heating cracking device, the heating cracking device is connected to an oil recovery system for processing cracking fumes to produce diesel, gasoline and fuel gas, the heating cracking device comprises a cracking kettle, the cracking kettle is provided with a cracking cavity, the outer wall of the cracking kettle is provided with a heating mechanism for heating the cracking cavity, the cracking kettle is provided with an inlet sealed and connected with the cracking cavity, the continuous feeding device is sealed and connected with the cracking cavity through the inlet, the continuous feeding device comprises a vertical hoist for lifting materials, the continuous feeding device also comprises a storage device for storing materials, the storage device comprises a storage cavity, the storage cavity is connected with the vertical hoist through a first discharge pipe, a feeding control valve is provided between the first discharge pipe and the storage cavity, a second discharge pipe is provided at the lower end of the storage cavity, and the The second discharge pipe is provided with a discharge control valve, the other end of the second discharge pipe is sealed and connected with a feeder, the feeder includes a second feeding pipe, a second screw feeder for conveying materials is provided in the second feeding pipe, a second driving component for driving the second screw feeder to rotate is provided at the end of the second feeding pipe, one end of the second feeding pipe is sealed and connected with the second discharge pipe, and the other end is sealed and connected with the feed inlet through the third discharge pipe, the feeder is provided with a heating mechanism for heating, the heating mechanism includes a preheating mechanism and a ripening mechanism located between the second discharge pipe and the third discharge pipe, the material in the second feeding pipe is preheated by the preheating mechanism, and then the material in the second feeding pipe is subjected to high-temperature ripening heating by the ripening mechanism, the continuous feeding device is provided with a controller, the vertical hoist, the feeding control valve, the discharge control valve, the feeder and the heating mechanism are all electrically connected to the controller.

[0006] During use of the above technical solution: the second driving component is started to transport the waste plastic from the lower end to the third discharge pipe through the second spiral feeder, thereby realizing the function of automatic feeding, and at the same time cooperating with the storage device to prevent oil fume leakage, the material in the second feeding pipe is preheated by the preheating mechanism, and then the material in the second feeding pipe is subjected to high-temperature ripening heating by the ripening mechanism, thereby shortening the softening and ripening time of the waste plastic in the cracking chamber, improving work efficiency, and shortening working time.

[0007] Preferably, the preheating mechanism includes a first high-temperature resistant insulating layer wrapped on the second feeding tube, the outer surface of the first insulating layer is spirally wound with a first high-frequency wire, both ends of the first high-frequency wire are electrically connected to a first frequency converter, the first frequency converter is electrically connected to a controller, and a first protective shell for protecting the first high-frequency wire and the first insulating layer is fixedly arranged on the outer wall of the second feeding tube, and the first frequency converter is electrically connected to a power module.

[0008] Preferably, the ripening mechanism includes a second high-temperature resistant insulating layer coated on the second feeding tube, the outer surface of the second insulating layer is spirally wound with a second high-frequency wire, both ends of the second high-frequency wire are electrically connected to a second frequency converter, the second frequency converter is electrically connected to the controller, and a second protective shell for protecting the second high-frequency wire and the second insulating layer is fixedly arranged on the outer wall of the second feeding tube, and the second frequency converter is electrically connected to a power module.

[0009] During use, the above technical solution provides a DC voltage through the power module and converts it into a high-frequency AC voltage with a frequency of 20-40KHz. A high-speed changing magnetic field is generated through the first high-frequency wire and the second high-frequency wire respectively, and magnetic lines of force are formed to cut the wall of the second feeding tube to generate eddy current heating. The controller controls the first frequency converter and the second frequency converter to send AC voltages of different frequencies, controls the preheating mechanism to generate the preheating temperature, and the ripening temperature to generate the ripening temperature, thereby realizing the function of precise temperature control.

[0010] Preferably, the vertical elevator includes a first vertically arranged feeding pipe, in which a first screw feeder for lifting materials is rotatably installed, and a first driving component for driving the first screw feeder to rotate is detachably installed on the outer wall of the first feeding pipe, and a first feeding port and a first discharging port are provided on the first feeding pipe, and the first discharging pipe is sealed and connected with the first discharging port, and the first feeding pipe is connected with a feeder through the first feeding port, and materials are transported into the first feeding pipe through the feeder.

[0011] Preferably, the feeder includes a feeding pipe sealed and connected to the first feeding pipe, a third screw feeder for conveying materials is rotatably installed in the feeding pipe, a third driving component for driving the third screw feeder to rotate is detachably installed on the end of the feeding pipe, a feeding bin is fixedly connected to the upper side of one end of the feeding pipe close to the third driving component, and the feeding pipe is sealed and connected to the first feeding pipe through a first feed port.

[0012] Preferably, the storage cavity and the second discharge pipe are respectively provided with a first gas filling pipe and a second gas filling pipe for filling / discharging nitrogen.

[0013] During use of the above technical solution: air is inflated or exhausted into the storage cavity and the second discharge pipe through the first inflation pipe and the second inflation pipe, the pressure in the storage cavity and the second discharge pipe is adjusted, the efficiency and accuracy of feeding and discharging are improved, and the function of rapid discharge can be realized.

[0014] Preferably, the first inflation tube and the second inflation tube are both provided with an automatic adjustment cavity, a piston plate is sealingly and slidably mounted on the automatic adjustment cavity, a first elastic component is provided between the piston plate and the automatic adjustment cavity, the piston plate is pushed close to the first inflation tube by the first elastic component, and an automatic air replenishing device is sealingly mounted on the automatic adjustment cavity; The automatic air-supply device comprises an air-supply pipe which is sealed and connected to the automatic regulating cavity, an annular sealing plate is fixedly arranged on the air-supply pipe, a connecting rod is fixedly arranged on the inner wall of the air-supply pipe, a frustum is fixedly arranged at the middle position of the connecting rod, a sealing ball is slidably mounted on the annular sealing plate, a second elastic component is arranged between the frustum and the sealing ball, and the sealing ball is pushed by the second elastic component to seal the annular sealing plate.

[0015] During use of the above technical solution: when adding material into the storage chamber, the gas pressure in the storage chamber increases and enters the automatic adjusting chamber, and pushes the piston plate to move along the automatic adjusting chamber, while compressing the first elastic component. When discharge is required, the piston plate is pushed to reset through the first elastic component, pushing the gas into the storage chamber and realizing the function of pushing the material to be discharged, thereby preventing blockage in the storage chamber. When the gas pressure in the automatic adjusting chamber is lower than the air pressure in the air supply pipe, the gas pushes the sealing ball to move along the annular sealing plate and flows out from the gap between the two, thereby realizing the function of automatic air supply.

[0016] Preferably, a discharge branch pipe is fixedly provided on the second feeding pipe between the preheating mechanism and the ripening mechanism, a discharge hole is provided at the portion where the second connecting pipe is connected to the discharge branch pipe, a storage barrel is provided at the lower end of the discharge branch pipe, a connecting pipe is provided at the lower end of the storage barrel, a first control valve is provided between the discharge branch pipe and the storage barrel, a second control valve is provided between the storage barrel and the connecting pipe, the storage barrel is sealed and connected to a discharge machine through the connecting pipe, the discharge machine includes a discharge pipe sealed with the connecting pipe, a fourth screw feeder is rotatably installed in the discharge pipe, a fourth driving component for driving the fourth screw feeder to rotate is detachably installed on the discharge pipe, and a discharge heating section is wrapped around the discharge branch pipe, the storage barrel, the connecting pipe and the discharge pipe; The discharge heating section includes a high-temperature resistant third insulation layer respectively coated on the discharge branch pipe, storage barrel, connecting pipe and discharge pipeline, the outer surface of the third insulation layer is spirally wound with a third high-frequency wire, both ends of the third high-frequency wire are electrically connected to a third frequency converter, the third frequency converter is electrically connected to the controller, and a third protective shell for protecting the third high-frequency wire and the third insulation layer is fixedly arranged on the outer walls of the discharge branch pipe, storage barrel, connecting pipe and discharge pipeline, and the third frequency converter is electrically connected to a power module.

[0017] During use of the above technical solution: the plastic in the second feeding pipe is overheated by the ripening mechanism and the liquid in a fully dissolved state falls into the storage barrel through the discharge hole, preventing it from flowing into the second feeding pipe at the position of the preheating mechanism and causing material jamming. The first control valve and the second control valve are opened or closed to prevent oil fume leakage, and the discharge heating section is used to prevent it from solidifying in the storage barrel, thereby affecting the discharge.

[0018] Preferably, the cracking kettle is provided with a stirring mechanism, which comprises a rotating tube rotatably mounted on the cracking kettle, a first transmission gear is fixedly mounted on the outer wall of the upper end of the rotating tube, a stirring motor is detachably mounted on the cracking kettle, a second transmission gear meshing with the first transmission gear is fixedly mounted on the output end of the stirring motor, a transmission shaft is slidably mounted in the rotating tube, a fifth driving component is detachably mounted on the cracking kettle, a mounting plate is fixedly mounted on the output end of the fifth driving component, the upper end of the transmission shaft is rotatably mounted on the mounting plate, a sliding cavity and a plurality of key grooves are opened on the rotating tube, a stirring shaft is fixedly mounted on the lower end of the transmission shaft, the stirring shaft is slidably mounted in the sliding cavity, the sliding cavity is connected to the plurality of key grooves through a connecting hole, a key is slidably mounted in the key groove, the key is connected and fixed to the stirring shaft through a connecting rod, and a first stirring rod is fixedly mounted on the stirring shaft.

[0019] During use of the above technical solution: starting the stirring motor to drive the first stirring rod to rotate through the rotating tube and the stirring shaft, thereby accelerating the melting speed of the waste plastic in the cracking chamber; starting the fifth driving component to drive the transmission shaft and the stirring shaft to move up and down along the rotating tube through the mounting plate, thereby driving the first stirring rod to move up and down during the rotation process, so that the waste plastic is fully dissolved and the melting speed and quality are improved.

[0020] A waste plastic thermal cracking continuous feeding system comprises the following steps: A1. Open the feeding control valve, close the discharging control valve, and fill the material into the storage chamber through the feeder and the vertical elevator. After the material in the storage chamber is filled, close the feeding control valve; A2, open the discharge control valve, and use the feeder to feed the material in the storage chamber into the cracking chamber through the third discharge pipe, and heat the material in the cracking chamber through the heating mechanism. The generated oil fume is captured and separated by the heavy component capture separator to separate the cracking oil fume and send it to the oil recovery system; A3, controlling the first frequency converter and the second frequency converter through the controller, controlling the preheating mechanism to preheat the material in the second feeding pipe at the preheating temperature, and ripening the material in the second feeding pipe at the ripening temperature through the ripening mechanism; A4. The rotation speed of the second driving component is controlled by a controller, thereby realizing an automatic quantitative feeding function.

[0021] The above technical solution is in use:

[0022] After adopting the above technical solution, the beneficial effects of the present invention are: 1. Start the second driving component to transport the waste plastic from the lower end to the third discharge pipe through the second spiral feeder to realize the function of automatic feeding. At the same time, cooperate with the storage device to prevent the leakage of oil smoke. Preheat the material in the second feeding pipe through the preheating mechanism, and then use the ripening mechanism to heat the material in the second feeding pipe at high temperature to shorten the softening and ripening time of the waste plastic in the cracking chamber, improve work efficiency, and shorten working time; 2. When adding materials into the storage cavity, the gas pressure in the storage cavity increases and enters the automatic adjustment cavity, and pushes the piston plate to move along the automatic adjustment cavity, while compressing the first elastic component. When it is necessary to discharge the materials, the first elastic component pushes the piston plate to reset, and pushes the gas into the storage cavity, and realizes the function of pushing the materials to be discharged, thereby preventing blockage in the storage cavity. When the gas pressure in the automatic adjustment cavity is lower than the gas pressure in the gas supply pipe, the gas pushes the sealing ball to move along the annular sealing plate, and flows out from the gap between the two, thereby realizing the function of automatic gas supply. 3. The plastic in the second feeding pipe is overheated by the ripening mechanism and the liquid in a fully molten state falls into the storage barrel through the discharge hole to prevent it from flowing into the second feeding pipe at the position of the preheating mechanism, causing the material to be stuck. The first control valve and the second control valve are opened or closed to prevent the leakage of oil smoke. The discharge heating section is used to prevent it from solidifying in the storage barrel, thereby affecting the discharge. 4. Start the stirring motor to drive the first stirring rod to rotate through the rotating tube and the stirring shaft, accelerate the melting speed of the waste plastic in the cracking chamber, start the fifth driving component to drive the transmission shaft and the stirring shaft to move up and down along the rotating tube through the mounting plate, thereby driving the first stirring rod to move up and down during the rotation process, so that the waste plastic is fully dissolved and the melting speed and quality are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 3It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 4 It is a structural schematic diagram of the material storage device of the present invention; Figure 5 This is a schematic diagram of the structure of the automatic adjustment cavity in the third embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the automatic air replenishing device in the third embodiment of the present invention; Figure 7 It is a schematic diagram of the local structure of the present invention; Figure 8 It is a partial structural schematic diagram of the feeding machine of the present invention; Fig. 9 For the present invention Figure 8 A partial enlarged view of the middle A; Fig.10 For the present invention Figure 8 A partial enlarged view of point B in the middle; Fig.11 For the present invention Figure 8 A partial enlarged view of point C in the middle; Fig.12 It is a structural schematic diagram of the discharge heating section of the present invention; Fig.13 It is a partial structural schematic diagram of the discharge heating section of the present invention; Fig.14 This is a schematic diagram of the structure of the stirring mechanism in the second embodiment of the present invention; Fig.15 It is a partial structural schematic diagram of the stirring mechanism in the second embodiment of the present invention; Fig.16 is a cross-sectional view of a rotating tube in Embodiment 2 of the present invention; In the figure, 1, continuous feeding device; 2, heating cracking device; 21, cracking kettle; 22, cracking chamber; 23, heavy component capture and separation mechanism; 24, slag discharge mechanism; 25, nitrogen production mechanism; 26, heating mechanism; 27, stirring mechanism; 28, feeding port; 29, slag discharge port; 210, smoke exhaust port; 3, 4, vertical elevator; 41, first feeding pipe; 42, first spiral feeder; 43, first discharge pipe; 44, first driving component; 45, first discharge port; 46, first feeding port; 5, storage device; 51, storage chamber; 52, feeding control valve; 5 3. Discharge control valve; 54. Second discharge pipe; 55. First air filling pipe; 56. Second air filling pipe; 57. Automatic adjustment chamber; 58. Piston plate; 59. First elastic component; 50. Automatic air supply device; 501. Air supply pipe; 502. Annular sealing plate; 503. Sealing ball; 504. Connecting rod; 505. Round table; 506. Second elastic component; 6. Feeder; 61. Second feeding pipe; 62. Second spiral feeder; 63. Third discharge pipe; 64. Second driving component; 65. Discharge branch pipe; 66. First control valve; 67. Extension pipe; 68. Second Control valve; 69, connecting pipe; 610, second feed port; 611, second discharge port; 612, discharge hole; 7, heating mechanism; 71, preheating mechanism; 711, first insulating layer; 712, first protective shell; 713, first high-frequency wire; 72, ripening mechanism; 721, second insulating layer; 722, second protective shell; 723, second high-frequency wire; 73, discharge heating section; 731, third insulating layer; 732, third protective shell; 733, third high-frequency wire; 8, feeder; 81, feeding pipe; 82, third screw feeder; 83, feeding bin; 84, third driving component; 9, discharge machine; 91, discharge pipe; 92, fourth screw feeder; 93, fourth driving component; 2701, rotating tube; 2702, first transmission gear; 2703, stirring motor; 2704, second transmission gear; 2705, transmission shaft; 2706, mounting plate; 2707, stirring shaft; 2708, arc stirring rod; 2709, scraper; 2710, first stirring rod; 2711, keyway; 2712, sliding cavity; 2713, connecting hole; 2714, connecting rod; 2714, key; 2715, fifth driving component; DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0026] like Figures 1 to 16 As shown, a waste plastic thermal cracking continuous feeding device and system, comprising a continuous feeding device 1 and a heating cracking device 2, the heating cracking device 2 is connected to an oil recovery system for processing cracking oil smoke to produce diesel, gasoline and fuel gas, the heating cracking device 2 comprises a cracking kettle 21, the cracking kettle 21 is provided with a cracking cavity 22, the outer wall of the cracking kettle 21 is provided with a heating mechanism 7 for heating the cracking cavity 22, the cracking kettle 21 is provided with a feed inlet 28 sealed and connected to the cracking cavity 22, The continuous feeding device 1 is sealed and connected to the cracking chamber 22 through the feed inlet 28, and the continuous feeding device 1 includes a vertical elevator 4 for lifting the material, and the continuous feeding device 1 also includes a storage device 5 for storing the material, and the storage device 5 includes a storage chamber 51, and the storage chamber 51 is connected to the vertical elevator 4 through a first discharge pipe 43, and a feeding control valve 52 is arranged between the first discharge pipe 43 and the storage chamber 51, and a second discharge pipe 54 is arranged at the lower end of the storage chamber 51, and the second discharge pipe 54 is arranged at the lower end of the storage chamber 51. A discharge control valve 53 is provided on the material pipe 54, and the other end of the second discharge pipe 54 is sealed and connected to the feeder 6, and the feeder 6 includes a second feeding pipe 61, and a second screw feeder 62 for conveying materials is provided in the second feeding pipe 61, and a second driving component 64 for driving the second screw feeder 62 to rotate is provided at the end of the second feeding pipe 61, and one end of the second feeding pipe 61 is sealed and connected to the second discharge pipe 54, and the other end is sealed and connected to the feed inlet 28 through the third discharge pipe 63. The feeder 6 is provided with a heating mechanism 7 for heating, and the heating mechanism 7 includes a preheating mechanism 71 and a ripening mechanism 72 located between the second discharge pipe 54 and the third discharge pipe 63. The material in the second feed pipe 61 is preheated by the preheating mechanism 71, and then the material in the second feed pipe 61 is subjected to high-temperature ripening heating by the ripening mechanism 72. The continuous feeding device 1 is provided with a controller, and the vertical hoist 4, the feeding control valve 52, the discharge control valve 53, the feeder 6 and the heating mechanism 7 are all electrically connected to the controller.

[0027] Specifically: the cracking chamber 22 is provided with a smoke exhaust port 210, and the other end of the smoke exhaust port 210 is connected to the oil recovery system through a heavy component capture separator. The cracking kettle 21 is provided with a slag discharge mechanism 24, and the slag discharge mechanism 24 is sealed and connected to the cracking chamber 22 through a slag discharge port 29. The cracking kettle 21 is installed with a stirring mechanism 27, and the stirring mechanism 27 includes a stirring shaft 2707 rotatably installed on the cracking kettle 21. A stirring motor 2703 is installed on the cracking kettle 21 through bolts and nuts, and the output end of the stirring motor 2703 is connected and fixed to the stirring shaft 2707. A first stirring rod 2710 is fixedly provided on the stirring shaft 2707. The heavy component capture separator, the heating mechanism 7 and the inspection mechanism are all existing well-known technologies.

[0028] The second driving component 64 is a feeding motor, which is installed on the second feeding tube 61 through bolts and nuts. The output end of the feeding motor is connected to the second screw feeder 62. The controller is electrically connected to a power module. The signal input end of the controller is connected to a setting / selector and a display screen for setting working conditions or instruction data. In actual operation: start the second driving component 64 to transport the waste plastic from the lower end to the third discharge pipe 63 through the second spiral feeder 62, so as to realize the function of automatic feeding, and cooperate with the storage device 5 to prevent the leakage of oil smoke, preheat the material in the second feeding pipe 61 through the preheating mechanism 71, and then use the ripening mechanism 72 to heat the material in the second feeding pipe 61 at high temperature, so as to shorten the softening and ripening time of the waste plastic in the cracking chamber 22, improve the working efficiency and shorten the working time.

[0029] The preheating mechanism 71 includes a first high-temperature resistant insulating layer 711 coated on the second feeding tube 61, the outer surface of the first insulating layer 711 is spirally wound with a first high-frequency wire 713, both ends of the first high-frequency wire 713 are electrically connected to a first frequency converter, the first frequency converter is electrically connected to a controller, and a first protective shell 712 for protecting the first high-frequency wire 713 and the first insulating layer 711 is fixedly arranged on the outer wall of the second feeding tube 61, and the first frequency converter is electrically connected to a power module.

[0030] The ripening mechanism 72 includes a high-temperature resistant second insulating layer 721 coated on the second feeding tube 61, the outer surface of the second insulating layer 721 is spirally wound with a second high-frequency wire 723, both ends of the second high-frequency wire 723 are electrically connected to a second frequency converter, the second frequency converter is electrically connected to the controller, and a second protective shell 722 for protecting the second high-frequency wire 723 and the second insulating layer 721 is fixedly arranged on the outer wall of the second feeding tube 61, and the second frequency converter is electrically connected to a power module.

[0031] In actual operation: a DC voltage is provided by a power module and converted into a high-frequency AC voltage with a frequency of 20-40KHz. A high-speed changing magnetic field is generated by the first high-frequency wire 713 and the second high-frequency wire 723 respectively, and magnetic lines of force are formed to cut the tube wall of the second feeding tube 61 to generate eddy current heating. The controller controls the first frequency converter and the second frequency converter to send AC voltages of different frequencies, controls the preheating mechanism 71 to generate the preheating temperature, and the ripening temperature to generate the ripening temperature, thereby realizing the function of precise temperature control.

[0032] The vertical elevator 4 includes a first feeding pipe 41 arranged vertically, a first screw feeder 42 for lifting materials is rotatably installed in the first feeding pipe 41, a first driving component 44 for driving the first screw feeder 42 to rotate is detachably installed on the outer wall of the first feeding pipe 41, a first feeding port 46 and a first discharging port 45 are provided on the first feeding pipe 41, the first discharging pipe 43 is sealed and connected with the first discharging port 45, the first feeding pipe 41 is connected with the feeder 8 through the first feeding port 46, and materials are transported into the first feeding pipe 41 through the feeder 8.

[0033] The feeder 8 includes a feeding pipe 81 sealed and connected to the first feeding pipe 41, a third screw feeder 82 for conveying materials is rotatably installed in the feeding pipe 81, a third driving component 84 for driving the third screw feeder 82 to rotate is detachably installed at the end of the feeding pipe 81, a feeding bin 83 is fixedly connected to the upper side of one end of the feeding pipe 81 near the third driving component 84, and the feeding pipe 81 is sealed and connected to the first feeding pipe 41 through the first feed port 46.

[0034] Specifically: the first driving component 44, the second driving component 64, the third driving component 84 and the fourth driving component 93 are all feeding motors and are electrically connected to the controller.

[0035] The storage cavity 51 and the second discharge pipe 54 are respectively provided with a first gas filling pipe 55 and a second gas filling pipe 56 for filling / discharging nitrogen.

[0036] In actual operation: air is inflated or exhausted into the storage cavity 51 and the second discharge pipe 54 through the first inflation pipe 55 and the second inflation pipe 56, the pressure in the storage cavity 51 and the second discharge pipe 54 is adjusted, the efficiency and accuracy of feeding and discharging are improved, and the function of rapid discharge can be realized.

[0037] A discharge branch pipe 65 is fixedly provided on the second feeding pipe 61 between the preheating mechanism 71 and the ripening mechanism 72, a discharge hole 612 is provided at the portion where the second connecting pipe 69 is connected to the discharge branch pipe 65, a storage barrel is provided at the lower end of the storage barrel, a connecting pipe 69 is provided at the lower end of the storage barrel, a first control valve 66 is provided between the discharge branch pipe 65 and the storage barrel, a second control valve 68 is provided between the storage barrel and the connecting pipe 69, the storage barrel is sealed and connected to a discharge machine 9 through the connecting pipe 69, the discharge machine 9 includes a discharge pipe 91 sealed with the connecting pipe 69, a fourth screw feeder 92 is rotatably installed in the discharge pipe 91, a fourth driving component 93 for driving the fourth screw feeder 92 to rotate is detachably installed on the discharge pipe 91, and a discharge heating section 73 is wrapped around the discharge branch pipe 65, the storage barrel, the connecting pipe 69 and the discharge pipe 91; The discharge heating section 73 includes a high-temperature resistant third insulating layer 731 respectively covering the discharge branch pipe 65, the storage barrel, the connecting pipe 69 and the discharge pipe 91. The outer surface of the third insulating layer 731 is spirally wound with a third high-frequency wire 733. Both ends of the third high-frequency wire 733 are electrically connected to a third frequency converter. The third frequency converter is electrically connected to the controller. A third protective shell 732 for protecting the third high-frequency wire 733 and the third insulating layer 731 is fixedly arranged on the outer walls of the discharge branch pipe 65, the storage barrel, the connecting pipe 69 and the discharge pipe 91. The third frequency converter is electrically connected to a power module.

[0038] In actual operation: the plastic in the second feeding pipe 61 is overheated by the ripening mechanism 72 and the liquid in a fully melted state falls into the storage barrel through the discharge hole 612, preventing it from flowing into the second feeding pipe 61 at the position of the preheating mechanism 71 and causing material jamming. The first control valve 66 and the second control valve 68 are opened or closed to prevent the leakage of oil smoke, and the discharge heating section 73 is used to prevent it from solidifying in the storage barrel, thereby affecting the discharge. Example

[0039] On the basis of the first embodiment, the cracking kettle 21 is provided with a stirring mechanism 27, and the stirring mechanism 27 includes a rotating tube 2701 rotatably mounted on the cracking kettle 21, and a first transmission gear 2702 is fixedly arranged on the outer wall of the upper end of the rotating tube 2701. A stirring motor 2703 is detachably mounted on the cracking kettle 21, and a second transmission gear 2704 meshing with the first transmission gear 2702 is fixedly arranged at the output end of the stirring motor 2703. A transmission shaft 2705 is slidably mounted in the rotating tube 2701, and a fifth driving component 2715 is detachably mounted on the cracking kettle 21, and a fifth driving component 2715 is fixedly arranged at the output end thereof. The mounting plate 2706 is provided, and the upper end of the transmission shaft 2705 is rotatably mounted on the mounting plate 2706. A sliding cavity 2712 and a plurality of key 2714 grooves 2711 are provided on the rotating tube 2701. A stirring shaft 2707 is fixedly provided at the lower end of the transmission shaft 2705. The stirring shaft 2707 is slidably mounted in the sliding cavity 2712. The sliding cavity 2712 is connected with a plurality of key 2714 grooves 2711 through a connecting hole 2713. A key 2714 is slidably mounted in the key 2714 groove 2711. The key 2714 is connected and fixed to the stirring shaft 2707 through a connecting rod 2714. A first stirring rod 2710 is fixedly provided on the stirring shaft 2707.

[0040] Specifically: the fifth driving component 2715 is an electric push rod or a hydraulic cylinder.

[0041] In actual operation: start the stirring motor 2703 to drive the first stirring rod 2710 to rotate through the rotating tube 2701 and the stirring shaft 2707, thereby accelerating the melting speed of the waste plastic in the cracking chamber 22; start the fifth driving component 2715 to drive the transmission shaft 2705 and the stirring shaft 2707 to move up and down along the rotating tube 2701 through the mounting plate 2706, thereby driving the first stirring rod 2710 to move up and down during the rotation process, so that the waste plastic is fully dissolved, and the melting speed and quality are improved. Example

[0042] On the basis of the second embodiment, the first inflation tube 55 and the second inflation tube 56 are both provided with an automatic adjustment cavity 57, a piston plate 58 is sealingly and slidably mounted on the automatic adjustment cavity 57, a first elastic component 59 is arranged between the piston plate 58 and the automatic adjustment cavity 57, the first elastic component 59 pushes the piston plate 58 close to the first inflation tube 55, and an automatic air replenishing device 50 is sealedly mounted on the automatic adjustment cavity 57; The automatic air-supply device 50 includes an air-supply pipe 501 which is sealed and connected to the automatic regulating cavity 57, an annular sealing plate 502 is fixedly provided on the air-supply pipe 501, a connecting rod 2714 is fixedly provided on the inner wall of the air-supply pipe 501, a frustum 505 is fixedly provided at the middle position of the connecting rod 2714, a sealing ball 503 is slidably mounted on the annular sealing plate 502, a second elastic component 506 is provided between the frustum 505 and the sealing ball 503, and the annular sealing plate 502 is sealed by pushing the sealing ball 503 through the second elastic component 506.

[0043] Specifically: the first elastic component 59 is a return spring, one end of the first elastic component 59 is connected and fixed to the piston plate 58, and the other end is connected and fixed to the automatic adjustment cavity 57, the second elastic component 506 is a limit spring, one end of the second elastic component 506 is connected and fixed to the cone 505, and the other end is connected and fixed to the sealing ball 503.

[0044] In actual operation: when adding material into the storage chamber 51, the gas pressure in the storage chamber 51 increases, and enters the automatic adjusting chamber 57, and pushes the piston plate 58 to move along the automatic adjusting chamber 57, while compressing the first elastic component 59. When discharge is required, the piston plate 58 is pushed to reset by the first elastic component 59, and the gas is pushed into the storage chamber 51 to realize the function of pushing the material to be discharged, thereby preventing blockage in the storage chamber 51. When the gas pressure in the automatic adjusting chamber 57 is lower than the gas pressure in the air supply pipe 501, the gas pushes the sealing ball 503 to move along the annular sealing plate 502, and flows out from the gap between the two, thereby realizing the function of automatic air supply.

[0045] A waste plastic thermal cracking continuous feeding system comprises the following steps: A1. Open the feeding control valve 52, close the discharging control valve 53, and fill the material into the storage cavity 51 through the feeder 8 and the vertical elevator 4. After the material in the storage cavity 51 is filled, close the feeding control valve 52; A2, open the discharge control valve 53, and feed the material in the storage chamber 51 through the third discharge pipe 63 into the cracking chamber 22 through the feeder 6, and heat the material in the cracking chamber 22 through the heating mechanism 7, and the generated oil smoke is captured and separated by the heavy component capture separator to separate the cracking oil smoke, and sent to the oil recovery system; A3, the controller controls the first frequency converter and the second frequency converter to control the preheating mechanism 71 to preheat the material in the second feeding pipe 61 at the preheating temperature, and the ripening mechanism 72 to ripen the material in the second feeding pipe 61 at the ripening temperature; A4. The rotation speed of the second driving component 64 is controlled by the controller, thereby realizing the automatic quantitative feeding function.

[0046] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A waste plastic thermal cracking continuous feeding device, comprising a continuous feeding device (1) and a heating cracking device (2), the heating cracking device (2) being connected to an oil recovery system for processing cracking fumes to produce diesel, gasoline and fuel gas, the heating cracking device (2) comprising a cracking kettle (21), the cracking kettle (21) being provided with a cracking cavity (22), the outer wall of the cracking kettle (21) being provided with a heating mechanism (7) for heating the cracking cavity (22), the cracking kettle (21) being provided with a feed inlet (28) which is in sealed communication with the cracking cavity (22), the continuous feeding device (1) being in sealed communication with the cracking cavity (22) through the feed inlet (28), and characterized in that: The continuous feeding device (1) comprises a vertical elevator (4) for lifting materials. The continuous feeding device (1) also comprises a storage device (5) for storing materials. The storage device (5) comprises a storage cavity (51). The storage cavity (51) is connected to the vertical elevator (4) via a first discharge pipe (43). A feeding control valve (52) is provided between the first discharge pipe (43) and the storage cavity (51). A second discharge pipe (54) is provided at the lower end of the storage cavity (51). A discharge control valve (53) is provided on the second discharge pipe (54). The other end of the second discharge pipe (54) is sealedly connected to a feeder (6). The feeder (6) comprises a second feeding pipe (61). A second screw feeder (62) for conveying materials is provided in the second feeding pipe (61). A screw feeder (62) for conveying materials is provided at the end of the second feeding pipe (61). A second driving component (64) drives the second screw feeder (62) to rotate, one end of the second feed pipe (61) is sealed and connected to the second discharge pipe (54), and the other end is sealed and connected to the feed port (28) through the third discharge pipe (63). The feeder (6) is provided with a heating mechanism (7) for heating, and the heating mechanism (7) includes a preheating mechanism (71) and a ripening mechanism (72) located between the second discharge pipe (54) and the third discharge pipe (63). The preheating mechanism (71) preheats the material in the second feed pipe (61), and the ripening mechanism (72) heats the material in the second feed pipe (61) to ripen at high temperature. The continuous feeding device (1) is provided with a controller, and the vertical elevator (4), the feeding control valve (52), the discharge control valve (53), the feeder (6) and the heating mechanism (7) are all electrically connected to the controller.

2. A waste plastics thermal cracking continuous feeding device (1) according to claim 1, characterized in that: The preheating mechanism (71) comprises a first high-temperature resistant insulating layer (711) coated on the second feeding tube (61); the outer surface of the first insulating layer (711) is spirally wound with a first high-frequency wire (713); both ends of the first high-frequency wire (713) are electrically connected to a first frequency converter; the first frequency converter is electrically connected to a controller; a first protective shell (712) for protecting the first high-frequency wire (713) and the first insulating layer (711) is fixedly arranged on the outer wall of the second feeding tube (61); and the first frequency converter is electrically connected to a power module.

3. A waste plastics thermal cracking continuous feeding device (1) according to claim 2, characterized in that: The ripening mechanism (72) comprises a second high-temperature resistant insulating layer (721) coated on the second feeding tube (61); the outer surface of the second insulating layer (721) is spirally wound with a second high-frequency wire (723); both ends of the second high-frequency wire (723) are electrically connected to a second frequency converter; the second frequency converter is electrically connected to a controller; a second protective shell (722) for protecting the second high-frequency wire (723) and the second insulating layer (721) is fixedly arranged on the outer wall of the second feeding tube (61); and the second frequency converter is electrically connected to a power module.

4. A waste plastics thermal cracking continuous feeding device (1) according to claim 3, characterized in that: The vertical elevator (4) comprises a first feeding pipe (41) arranged vertically, a first screw feeder (42) for lifting materials being rotatably installed in the first feeding pipe (41), a first driving component (44) for driving the first screw feeder (42) to rotate being detachably installed on the outer wall of the first feeding pipe (41), a first feeding port (46) and a first discharging port (45) being arranged on the first feeding pipe (41), the first discharging pipe (43) being sealedly connected to the first discharging port (45), the first feeding pipe (41) being connected to a feeder (8) via the first feeding port (46), and materials being transported into the first feeding pipe (41) via the feeder (8).

5. A waste plastics thermal cracking continuous feeding device (1) according to claim 4, characterized in that: The feeder (8) comprises a feeding pipe (81) sealedly connected to the first feeding pipe (41); a third screw feeder (82) for conveying materials is rotatably mounted in the feeding pipe (81); a third driving component (84) for driving the third screw feeder (82) to rotate is detachably mounted at the end of the feeding pipe (81); a feeding bin (83) is fixedly connected to the upper side of one end of the feeding pipe (81) close to the third driving component (84); and the feeding pipe (81) is sealedly connected to the first feeding pipe (41) through a first feed port (46).

6. A waste plastics thermal cracking continuous feeding device (1) according to claim 5, characterized in that: The material storage cavity (51) and the second material discharge pipe (54) are respectively provided with a first gas charging pipe (55) and a second gas charging pipe (56) for charging / discharging nitrogen.

7. A waste plastics thermal cracking continuous feeding device (1) according to claim 6, characterized in that: The first inflation tube (55) and the second inflation tube (56) are both provided with an automatic adjustment cavity (57), a piston plate (58) is sealingly and slidably mounted on the automatic adjustment cavity (57), a first elastic component (59) is provided between the piston plate (58) and the automatic adjustment cavity (57), the piston plate (58) is pushed close to the first inflation tube (55) by the first elastic component (59), and an automatic air replenishing device (50) is sealingly mounted on the automatic adjustment cavity (57); The automatic air replenishment device (50) comprises an air replenishment pipe (501) which is sealed and connected to the automatic adjustment cavity (57); an annular sealing plate (502) is fixedly arranged on the air replenishment pipe (501); a connecting rod (2714) is fixedly arranged on the inner wall of the air replenishment pipe (501); a frustum (505) is fixedly arranged at the middle position of the connecting rod (2714); a sealing ball (503) is slidably mounted on the annular sealing plate (502); a second elastic component (506) is arranged between the frustum (505) and the sealing ball (503); the annular sealing plate (502) is sealed by pushing the sealing ball (503) through the second elastic component (506).

8. A waste plastics thermal cracking continuous feeding device (1) according to claim 7, characterized in that: A discharge branch pipe (65) is fixedly arranged on the second feeding pipe (61) between the preheating mechanism (71) and the ripening mechanism (72); a discharge hole (612) is provided at the portion where the second connecting pipe (69) is connected to the discharge branch pipe (65); a storage barrel is arranged at the lower end of the discharge branch pipe (65); a connecting pipe (69) is arranged at the lower end of the storage barrel; a first control valve (66) is arranged between the discharge branch pipe (65) and the storage barrel; and a second control valve (68) is arranged between the storage barrel and the connecting pipe (69). ), the material storage barrel is sealed and connected to a discharge machine (9) through a connecting pipe (69), the discharge machine (9) comprises a discharge pipe (91) sealed with the connecting pipe (69), a fourth screw feeder (92) is rotatably mounted in the discharge pipe (91), a fourth driving component (93) for driving the fourth screw feeder (92) to rotate is detachably mounted on the discharge pipe (91), and a discharge heating section (73) is wrapped around the discharge branch pipe (65), the material storage barrel, the connecting pipe (69) and the discharge pipe (91); The discharge heating section (73) comprises a third high-temperature resistant insulating layer (731) respectively coated on the discharge branch pipe (65), the storage barrel, the connecting pipe (69) and the discharge pipeline (91); the outer surface of the third insulating layer (731) is spirally wound with a third high-frequency wire (733); both ends of the third high-frequency wire (733) are electrically connected to a third frequency converter; the third frequency converter is electrically connected to a controller; a third protective shell (732) for protecting the third high-frequency wire (733) and the third insulating layer (731) is fixedly arranged on the outer walls of the discharge branch pipe (65), the storage barrel, the connecting pipe (69) and the discharge pipeline (91); the third frequency converter is electrically connected to a power module.

9. A waste plastics thermal cracking continuous feeding device (1) according to claim 8, characterized in that: The cracking kettle (21) is provided with a stirring mechanism (27), the stirring mechanism (27) comprising a rotating tube (2701) rotatably mounted on the cracking kettle (21), a first transmission gear (2702) being fixedly mounted on the outer wall of the upper end of the rotating tube (2701), a stirring motor (2703) being detachably mounted on the cracking kettle (21), a second transmission gear (2704) meshing with the first transmission gear (2702) being fixedly mounted at the output end of the stirring motor (2703), a transmission shaft (2705) being slidably mounted in the rotating tube (2701), a fifth driving component (2715) being detachably mounted on the cracking kettle (21), a mounting plate (2706) being fixedly mounted at the output end of the fifth driving component (2715), The upper end of the transmission shaft (2705) is rotatably mounted on the mounting plate (2706); a sliding cavity (2712) and a plurality of key (2714) grooves (2711) are provided on the rotating tube (2701); a stirring shaft (2707) is fixedly arranged at the lower end of the transmission shaft (2705); the stirring shaft (2707) is slidably mounted in the sliding cavity (2712); the sliding cavity (2712) is connected to a plurality of key (2714) grooves (2711) through a connecting hole (2713); a key (2714) is slidably mounted in the key (2714) groove (2711); the key (2714) is connected and fixed to the stirring shaft (2707) through a connecting rod (2714); and a first stirring rod (2710) is fixedly arranged on the stirring shaft (2707).

10. A waste plastic thermal cracking continuous feeding system, characterized in that: A waste plastic thermal cracking continuous feeding device (1) as claimed in any one of claims 1 to 9 is installed, comprising the following steps: A1. Open the feeding control valve (52), close the discharging control valve (53), and fill the material into the storage chamber (51) through the feeder (8) and the vertical elevator (4). After the material in the storage chamber (51) is filled, close the feeding control valve (52); A2, opening the discharge control valve (53), feeding the material in the storage chamber (51) into the cracking chamber (22) through the third discharge pipe (63) via the feeder (6), heating the material in the cracking chamber (22) via the heating mechanism (7), capturing and separating the generated oil fume through the heavy component capture separator to separate the cracking oil fume, and sending it to the oil product recovery system; A3, controlling the first frequency converter and the second frequency converter through the controller, controlling the preheating mechanism (71) to preheat the material in the second feeding pipe (61) at the preheating temperature, and ripening the material in the second feeding pipe (61) at the ripening temperature through the ripening mechanism (72); A4. The rotation speed of the second driving component (64) is controlled by a controller, thereby realizing an automatic quantitative feeding function.

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