Double-screw waste material modification equipment

Abstract

The invention relates to the field of waste treatment, in particular to double-screw waste modification equipment which comprises a double-screw waste modification mechanism, the double-screw waste modification mechanism is provided with a waste mixing box, and a double-screw assembly is arranged in the waste mixing box. Liquid waste added with a modification agent is treated through the arranged double-screw waste modification mechanism, the liquid waste is conveyed through the double-screw assembly, and in the process, the liquid waste can be extruded and cut through the double-screw assembly, so that the liquid waste is better mixed with the modification agent, and the modification effect is improved. A plurality of bottom waste back-scraping mechanisms arranged on the two sides can scrape and stir liquid waste which is precipitated at the bottom and not conveyed away by the double-screw assembly, and the liquid waste can be stirred by the double-screw assembly so as to be continuously conveyed out; the problem that part of liquid waste which is precipitated at the bottom and contains a large number of impurities cannot be well mixed and conveyed out is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of waste treatment, in particular to a twin-screw waste modification device. Background Art

[0002] Waste plastics are a general term for plastics that have been used in civil and industrial applications and are eventually eliminated or replaced. Plastics that take 500 to 1,000 years to decay often cause large-scale pollution. Therefore, many recyclable waste plastics can now be recycled after waste modification treatment. Chemical recycling heats recyclable waste plastics into liquid, and then adds related modification agents. During the waste plastic regeneration process, modification technology can further improve its performance. The principle of modification technology is to modify waste plastics through additives, fillers, etc. Modification can improve the strength, toughness, heat resistance and other properties of plastics.

[0003] In the entire waste recycling system, the waste is first mixed and stirred preliminarily and then sent to a single-screw extruder heating machine for heating and mixing into a liquid state. Finally, a modifying agent is added for further mixing and stirring.

[0004] Although most of the current single-screw extruder heating machines can heat most plastics into liquids through chemical reactions, there will still be a small amount of solid plastics that cannot be decomposed. Although most of the current single-screw extruder heating machines can filter out most of the larger solid plastics, there are still some smaller solid impurities that cannot be filtered and will flow into subsequent equipment along with the liquid waste.

[0005] These waste fluids with small volumes of solid impurities will be deposited at the bottom of the twin-screw waste modification equipment due to the solid impurities. Because most of the solid impurities are heavier during extrusion and transmission by the twin-screw assembly, some solid impurities will carry part of the liquid waste to the bottom, and these precipitates are not easily extruded and transmitted by the twin-screw, resulting in more and more solid impurities settling at the bottom. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a twin-screw waste modification device.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A twin-screw waste modification device comprises a twin-screw waste modification mechanism, the twin-screw waste modification mechanism is provided with a waste mixing box, a twin-screw assembly is provided in the waste mixing box, a feeding port is provided on one side of the upper surface of the waste mixing box, a double-shaft drive assembly is connected to one side of the waste mixing box body, the double-shaft drive assembly is connected to and drives the twin-screw assembly, a plurality of drive mechanisms are evenly arranged in the longitudinal direction on the upper surface of the waste mixing box, bottom waste scraping mechanisms are assembled and connected on both sides of the drive mechanisms, a chain transmission mechanism is connected to the other side of the bottom waste scraping mechanism away from the drive mechanism, and a protective box is provided outside the chain transmission mechanism; The bottom waste scraping mechanism includes a third bevel gear, which is assembled and connected with the driving mechanism, a connecting shaft is connected to the middle of the bottom surface of the third bevel gear, a third bearing seat is arranged in the middle of the connecting shaft, and the third bearing seat is installed on the upper surface of the waste mixing box, and a scraping frame is fixedly connected to the bottom end of the connecting shaft body, and the scraping frame is symmetrically arranged on both sides of the double screw assembly; The back scraper frame is provided with a plurality of arc walls, a guide groove is provided on one side of the arc wall, the inner wall of the guide groove is in a certain inclined arc, and a limiting convex plate is fixedly connected above the guide groove.

[0008] In addition, a preferred structure is that the driving mechanism includes a dual-axis motor, a first bevel gear is provided at the end of the shaft body at both output ends of the dual-axis motor, a third bevel gear is provided below the first bevel gear, and the first bevel gear is meshed with the third bevel gear, and a dust frame is provided at the connection between the first bevel gear and the third bevel gear.

[0009] In addition, a preferred structure is that the dustproof frame includes a support rod, the support rod is installed on the upper surface of the waste mixing box, a dustproof cover is provided on the top of the support rod body, and the dustproof cover covers the connection between the first bevel gear and the third bevel gear.

[0010] In addition, a preferred structure is that the chain transmission mechanism includes a first transmission assembly, the first transmission assembly is assembled and connected with the third bevel gear, a second transmission assembly is arranged on one side of the first transmission assembly, and a waste stirring mechanism is connected and arranged on one side of the second transmission assembly; The first transmission assembly includes a first transmission shaft, one end of the first transmission shaft body is connected to a second bevel gear, the second bevel gear is arranged above the third bevel gear, and the second bevel gear is meshed with the third bevel gear, and the other end of the first transmission shaft body away from the second bevel gear is equipped with a first sprocket; The second transmission assembly includes a second transmission shaft, a first bearing seat is arranged in the middle of the second transmission shaft, one end of the second transmission shaft body is connected to the waste stirring mechanism, and the other end of the second transmission shaft body away from the waste stirring mechanism is connected to the second sprocket; The second sprocket and the first sprocket are externally sleeved with chains.

[0011] In addition, the preferred structure is that the waste stirring mechanism includes a connecting head, the connecting head is assembled and connected to one end of the shaft body of the second transmission shaft, and a plurality of stirring plates are uniformly welded on the side wall of the connecting head; A welding head is arranged on one side of the stirring plate body, and the upper and lower surfaces of the welding head are arc-shaped. An arc groove is opened on the upper surface of the stirring plate. The stirring plate is located on the bottom wall of the groove of the arc groove and is evenly arranged with multiple diverter plates in a horizontal direction. A cavity is provided on one side of the circular arc groove, and an arc plate is provided on the upper surface of the stirring plate body located in the cavity. The arc plate is inclined at a certain angle toward the circular arc groove below, and a plurality of first drainage holes are evenly provided on the upper surface of the stirring plate located in the cavity, and a plurality of second drainage holes are evenly provided on the side wall of the stirring plate located on one side of the first drainage holes.

[0012] In addition, a preferred structure is that a plurality of mounting holes are evenly opened on the side walls on both sides of the waste mixing box body, the first bearing seat is installed at the mounting holes, a plurality of rotating boxes are arranged on both sides of the side walls of the waste mixing box body, the bottom waste scraping mechanism is arranged to rotate in the inner cavity of the rotating box, protective covers are installed on both sides of the upper surface of the waste mixing box and above each waste stirring mechanism, and a discharge port is arranged on the other side of the waste mixing box away from the connection with the dual-axis drive assembly.

[0013] In addition, a preferred structure is that the protective box cover is arranged on the outside of the chain drive mechanism, the protective box is installed on the side wall surfaces on both sides of the waste mixing box, a protective cover plate is installed on one side of the protective box body, a second bearing seat is arranged on the protective cover plate, and the first transmission shaft is rotatably arranged on the inner ring of the second bearing seat.

[0014] The beneficial effects of the present invention are as follows: in the present invention, when plastic waste is processed, the liquid waste after the modification agent is added is processed by the provided twin-screw waste modification mechanism, and the liquid waste is transmitted by the twin-screw assembly, and in this process the twin-screw assembly can also extrude and cut the liquid waste, so that it can be better mixed with the modification agent, and the multiple bottom waste scraping mechanisms provided on both sides can scrape and stir the liquid waste deposited at the bottom that has not been transmitted away by the twin-screw assembly, so that it can be stirred by the twin-screw assembly and continue to be transmitted, effectively solving the problem that a part of the liquid waste deposited at the bottom and containing a large amount of impurities cannot be well mixed and transmitted.

[0015] The waste stirring mechanism on one side stirs the liquid waste with solid impurities settled at the bottom by stirring counterclockwise, and the stirring plate can also play a certain filtering role, filtering out some of the fixed impurities, and further stirring the waste with a large amount of solid impurities settled at the bottom to the upper layer, and being extruded and transmitted by the twin-screw assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the waste treatment system; Figure 2 It is a structural schematic diagram of a twin-screw waste modification equipment; Figure 3 It is a structural schematic diagram of a waste mixing box; Figure 4 It is a schematic diagram of the structure when a mechanism is installed inside the waste mixing box; Figure 5 It is a schematic diagram of the structure of the waste mixing box without any mechanism installed inside; Figure 6 is a cross-sectional view of a waste mixing box; Figure 7 It is a schematic diagram of the structure in which the driving mechanism is installed on the waste mixing box; Figure 8 It is a structural schematic diagram of the connection between the bottom waste scraping mechanism and the driving mechanism; Fig. 9 It is a structural schematic diagram of the driving mechanism connecting the driving part; Fig.10 This is a schematic diagram of the structure of the protective box after it is disassembled; Fig.11 It is a schematic diagram of the structure when the chain transmission mechanism is connected with the waste stirring mechanism; Fig.12 It is a schematic diagram of the structure of the chain transmission mechanism after being disassembled; Fig.13 It is a structural schematic diagram of the bottom waste scraping mechanism; Fig.14 It is a structural schematic diagram of the back scraper frame; Fig.15 is a schematic diagram of the structure of the stirring plate; Fig.16 A cross-sectional view of the stirring plate.

[0017] In the figure: 100, waste mixing and stirring tank; 200, waste conveyor; 300, single-screw mixing and heating machine; 301, discharge pipe; 400, twin-screw waste modification mechanism; 500, liquid cooling box; 1, waste mixing box; 11, mounting hole; 12, rotating box; 13, discharge port; 14, protective cover; 2, double-axis drive assembly; 3, discharge port; 4, drive mechanism; 41, double-axis motor; 42, first bevel gear; 5, chain transmission mechanism; 51, first transmission assembly; 511, first transmission shaft; 512, second bevel gear; 513, first sprocket; 52, chain; 53, second transmission assembly; 531, second transmission shaft; 532, The first bearing seat; 533, the second sprocket; 6, the dust frame; 61, the support rod; 62, the dust cover; 7, the double screw assembly; 8, the bottom waste scraping mechanism; 81, the third bevel gear; 82, the connecting shaft; 83, the scraping frame; 831, the arc wall; 832, the guide groove; 833, the limiting convex plate; 84, the third bearing seat; 9, the waste stirring mechanism; 91, the connecting head; 92, the stirring plate; 921, the welding head; 922, the diverter plate; 923, the first drainage hole; 924, the arc groove; 925, the second drainage hole; 926, the arc plate; 10, the protective box; 101, the protective cover plate; 102, the second bearing seat; 103, the fixing part. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Reference Figure 1-16 The twin-screw waste modification equipment comprises a twin-screw waste modification mechanism 400. The twin-screw waste modification mechanism 400 is provided with a waste mixing box 1. A twin-screw assembly 7 is arranged in the waste mixing box 1. A feeding port 3 is arranged on one side of the upper surface of the waste mixing box 1. A double-shaft driving assembly 2 is connected to one side of the waste mixing box 1. The double-shaft driving assembly 2 is connected to and drives the twin-screw assembly 7. A plurality of driving mechanisms 4 are evenly arranged along the longitudinal direction on the upper surface of the waste mixing box 1. Bottom waste scraping mechanisms 8 are assembled and connected on both sides of the driving mechanisms 4. A chain transmission mechanism 5 is connected to the other side of the bottom waste scraping mechanism 8 away from the driving mechanism 4. A protective box 10 is arranged outside the chain transmission mechanism 5. The twin-screw assembly 7 plays a role in extruding and transmitting liquid waste.

[0020] The bottom waste scraping mechanism 8 includes a third bevel gear 81, which is assembled and connected to the driving mechanism 4. A connecting shaft 82 is connected to the middle of the bottom surface of the third bevel gear 81, and a third bearing seat 84 is arranged in the middle of the connecting shaft 82. The third bearing seat 84 is installed on the upper surface of the waste mixing box 1. The bottom end of the connecting shaft 82 is fixedly connected to a scraping frame 83. The scraping frame 83 is symmetrically arranged on both sides of the double screw assembly 7. A plurality of arc walls 831 are arranged on the scraping frame 83, and one side of the arc wall 831 is opened. A guide groove 832 is provided, and the inner wall of the guide groove 832 is inclined at a certain arc. A limiting convex plate 833 is fixedly connected above the guide groove 832. As the scraper frame 83 rotates, the guide groove 832 will generate an upward flow direction, thereby driving up the liquid waste originally precipitated at the bottom, and under the action of the arc wall 831, some of the driven liquid waste can re-enter the fluid extruded and transmitted by the twin-screw assembly 7, thereby effectively preventing a large amount of liquid waste with solid impurities from being precipitated at the bottom.

[0021] In addition, the driving mechanism 4 includes a dual-axis motor 41, and a first bevel gear 42 is provided at the end of the shaft body at the output end on both sides of the dual-axis motor 41, and a third bevel gear 81 is provided below the first bevel gear 42, and the first bevel gear 42 is meshed with the third bevel gear 81, and a dust frame 6 is provided at the connection between the first bevel gear 42 and the third bevel gear 81. The dual-axis motor 41 can simultaneously drive the bottom waste scraping mechanism 8 on both sides to work.

[0022] Among them, the dustproof frame 6 includes a support rod 61, which is installed on the upper surface of the waste mixing box 1. A dustproof cover 62 is arranged on the top of the support rod 61. The dustproof cover 62 covers the connection between the first bevel gear 42 and the third bevel gear 81. The dustproof cover 62 can play an effective dustproof role.

[0023] In addition, the chain transmission mechanism 5 includes a first transmission component 51, the first transmission component 51 is assembled and connected with the third bevel gear 81, a second transmission component 53 is arranged on one side of the first transmission component 51, and a waste stirring mechanism 9 is connected to one side of the second transmission component 53, the first transmission component 51 includes a first transmission shaft 511, one end of the first transmission shaft 511 is connected with a second bevel gear 512, the second bevel gear 512 is arranged above the third bevel gear 81, and the second bevel gear 512 is meshed with the third bevel gear 81, and a first sprocket 513 is installed at the other end of the first transmission shaft 511 away from the second bevel gear 512, and the second bevel gear 512 achieves coordinated rotation through the third bevel gear 81 meshing with it.

[0024] Among them, the second transmission component 53 includes a second transmission shaft 531, a first bearing seat 532 is arranged in the middle of the second transmission shaft 531, one end of the second transmission shaft 531 is connected to the waste stirring mechanism 9, and the other end of the second transmission shaft 531 away from the waste stirring mechanism 9 is connected to the second sprocket 533, and the second sprocket 533 and the first sprocket 513 are provided with a chain 52 on the outside, and the chain 52 realizes the rotation of the first sprocket 513 and the second sprocket 533 on both sides, so that the second transmission component 53 can be driven to rotate when the first transmission component 51 rotates, so as to realize the operation of the waste stirring mechanism 9 on one side and realize linkage.

[0025] In addition, the waste stirring mechanism 9 includes a connecting head 91, which is assembled and connected to one end of the shaft body of the second transmission shaft 531. A plurality of stirring plates 92 are evenly welded on the side wall of the connecting head 91. A welding head 921 is provided on one side of the stirring plate 92. The upper and lower end surfaces of the welding head 921 are arc-shaped. An arc groove 924 is provided on the upper surface of the stirring plate 92. The stirring plate 92 is located on the bottom wall of the arc groove 924 and is evenly arranged in a horizontal direction with a plurality of diverter plates 922. The diverter plates 922 can cut the liquid waste, thereby reducing the resistance of the stirring plate 92 during rotation, and can also play a certain stirring role.

[0026] Among them, a cavity is opened on one side of the circular arc groove 924, and an arc plate 926 is arranged on the upper surface of the stirring plate 92 located in the cavity. The arc plate 926 is inclined at a certain angle toward the circular arc groove 924 below, and a plurality of first drainage holes 923 are evenly opened on the upper surface of the stirring plate 92 located in the cavity, and a plurality of second drainage holes 925 are evenly opened on the side wall of the stirring plate 92 located on one side of the first drainage hole 923. Liquid waste will be discharged through the first drainage hole 923 and the second drainage hole 925, while most of the solid impurities with larger volume that cannot pass through will be blocked by the first drainage hole 923 and the second drainage hole 925, and thus remain in the cavity, thereby filtering the solid impurities.

[0027] Among them, a plurality of mounting holes 11 are evenly opened on the side walls on both sides of the waste mixing box 1, the first bearing seat 532 is installed at the mounting holes 11, a plurality of rotating boxes 12 are arranged on both sides of the side walls of the waste mixing box 1, and the bottom waste scraping mechanism 8 is arranged to rotate in the inner cavity of the rotating box 12, and protective covers 14 are installed on both sides of the upper surface of the waste mixing box 1 and above each waste stirring mechanism 9, and a discharge port 13 is arranged on the other side of the waste mixing box 1 away from the dual-axis drive assembly 2, and the protective cover 14 is used to prevent the waste stirring mechanism 9 from throwing out the waste.

[0028] In addition, the protective box 10 cover is arranged on the outside of the chain transmission mechanism 5, and the protective box 10 is installed on the side wall surfaces of the waste mixing box 1. A protective cover plate 101 is installed on one side of the protective box 10 body, and a second bearing seat 102 is arranged on the protective cover plate 101. The first transmission shaft 511 is rotated on the inner ring of the second bearing seat 102. The protective box 10 mainly plays an effective dust-proof role, and the protective cover plate 101 is fixedly installed on one side of the protective box 10 with the fixing component 103 arranged in conjunction with the fixing cover plate 101.

[0029] In this embodiment, during waste treatment, some waste plastics can be modified to improve the quality of the plastics and facilitate subsequent waste recycling. The waste plastic particles are first poured into the waste mixing and stirring tank 100. The waste mixing and stirring tank 100 stirs the waste with other mixtures and performs preliminary heating inside. The stirred waste is discharged from the waste mixing and stirring tank 100 and falls onto the conveyor belt of the waste conveyor 200 below. After the conveyor belt of the waste conveyor 200 transfers the waste to the top, the waste falls into the single-screw mixing and heating machine 300 below. The single-screw mixing and heating machine 300 heats and dissolves the transferred waste and transfers it through the internal single screw. During this process, most of the waste will be heated and dissolved into a liquid state, and the single-screw mixing and heating machine 300 can also isolate large impurities that have not been dissolved in the waste.

[0030] The liquid waste discharged from the single-screw mixing and heating machine 300 will be discharged from the discharge pipe 301, and the modified agent will be added during the discharge. The waste discharged from the discharge pipe 301 that has become liquid will enter the twin-screw waste modification mechanism 400. The waste falling from the discharge pipe 301 first enters the discharge port 3, and then flows into the waste mixing box 1 from the discharge port 3. At this time, the twin-screw assembly 7 in the waste mixing box 1 is rotated by the twin-shaft drive assembly 2, because most of the liquid plastics The viscosity is relatively high, so under the synergistic effect of the twin-screw assembly 7, the two screws mesh with each other to extrude the waste fluid from the feed port 3 to the discharge port 13. In this process, the twin-screw meshing can also further extrude and mix the waste, so as to better blend and stir it with the modifying agent, similar to the effect of kneading dough. This twin-screw assembly 7 is a prior art, and its principle is consistent with the principle of the twin-screw extruder in the prior art. Its structure and principle need no further elaboration, and are well known to people in the field of twin-screw extrusion.

[0031] However, some waste fluids containing solid impurities will be precipitated at the bottom of the waste mixing box 1 due to the solid impurities. Although the single-screw mixing and heating machine 300 can filter out most of the undissolved solid impurities, there are still some smaller solid wastes that cannot be filtered and are discharged into the twin-screw waste modification mechanism 400 along with the liquid waste. When most of the solid impurities are extruded and conveyed by the twin-screw assembly 7, due to their heavy mass, some of the solid impurities will be precipitated at the bottom of the waste mixing box 1 with part of the liquid waste. These precipitates are not easily driven, and at this time, it is necessary to start the driving mechanism 4 to process the bottom precipitates.

[0032] First, the first bevel gears 42 on the drive shafts at the output ends of the dual-axis motor 41 rotate counterclockwise under the drive of the dual-axis motor 41 , thereby driving the bottom waste scraping mechanisms 8 on both sides to work.

[0033] After the first bevel gear 42 rotates counterclockwise, the third bevel gear 81 meshing with it will rotate counterclockwise synchronously under the action of the first bevel gear 42, and the connecting shaft 82 connected to the bottom of the third bevel gear 81 cooperates with the support of the third bearing seat 84 to make the connecting shaft 82 rotate counterclockwise, and the back scraper 83 at the bottom rotates counterclockwise in the rotating box 12 to scrape up most of the solid impurities precipitated on the bottom wall of the inner cavity of the waste mixing box 1.

[0034] The third bearing seat 84 is provided at the upper surface of the waste mixing box 1 .

[0035] First, the guide groove 832 of the scraper frame 83 has a certain arc, similar to a fan blade. When the scraper frame 83 rotates counterclockwise, a turbulent flow will be generated during the rotation of the scraper frame 83, and this turbulent flow will be opposite to the flow direction of the twin-screw assembly 7 during rotation, thereby stirring up the liquid waste settled at the bottom, and under the restriction of the limiting convex plate 833, the liquid waste originally settled at the bottom can enter the guide groove 832, and with the rotation of the scraper frame 83, the guide groove 832 will have an upward flow direction, thereby driving up the liquid waste originally settled at the bottom, and under the action of the arc wall 831, some of the driven liquid waste can re-enter the fluid extruded and transmitted by the twin-screw assembly 7, thereby effectively preventing a large amount of liquid waste with solid impurities from being deposited at the bottom.

[0036] When the liquid waste with solid impurities deposited at the bottom is scraped up, the waste stirring mechanism 9 on one side, driven by the chain transmission mechanism 5, can also assist in sending the waste to a higher place and filter the solid impurities.

[0037] First, under the clockwise rotation of the third bevel gear 81, the second bevel gear 512 meshing with it on the other side will rotate counterclockwise synchronously, thereby cooperating with the second bearing seat 102 on the protective cover 101, so that the first transmission shaft 511 drives the first sprocket 513 to rotate counterclockwise, and the chain 52 on the first sprocket 513 is driven counterclockwise, driving the second sprocket 533 on the other side to rotate counterclockwise, so that the second transmission shaft 531 connected to it and arranged on the first bearing seat 532 can rotate counterclockwise, thereby driving the waste stirring mechanism 9 on one side to work, and the first bearing seat 532 is installed at the mounting hole 11.

[0038] The four stirring plates 92 welded on the connecting head 91 rotate counterclockwise on one side of the scraper frame 83. When rotating counterclockwise, the stirring plate 92 will contact the liquid waste stirred up by the scraper frame 83 on one side, and the liquid waste will enter the arc groove 924. The arc surface of the arc groove 924 will guide the liquid waste hit by the stirring plate 92 during rotation into the inner cavity with the first liquid discharge hole 923 on the other side, and the diverter plate 922 can cut the liquid waste, thereby reducing the resistance of the stirring plate 92 during rotation, and can also play a certain stirring role.

[0039] Under the restriction of the arc plate 926, a part of the liquid waste will be retained in the cavity, and under the action of the centrifugal force of the stirring plate 92, the liquid waste will be discharged through the first drainage hole 923 and the second drainage hole 925, while most of the solid impurities that are too large to pass through will be blocked by the first drainage hole 923 and the second drainage hole 925, and thus remain in the cavity, thereby filtering out the solid impurities, and most of the solid impurities deposited at the bottom can be filtered out. The protection personnel can regularly open the protection cover 14 to clean the impurities in the stirring plate 92.

[0040] The protective box 10 mainly plays an effective dust-proof role. The protective cover 101 is fixedly installed on one side of the protective box 10 with the fixed component 103, and the dust cover 62 of the dust frame 6 is set at the connection between the bevel gears of the driving mechanism 4 on both sides to play a dust-proof role.

[0041] Moreover, the bottom waste scraping mechanism 8 and the waste stirring mechanism 9 are arranged in groups at intervals, which can ensure that most of the liquid waste precipitated on the bottom wall of the inner cavity of the waste mixing box 1 can be stirred up.

[0042] The liquid waste extruded by the twin-screw assembly 7 is discharged from the discharge port 13 , and the waste discharged from the discharge port 13 flows into the liquid cooling box 500 below to cool the liquid waste mixed with the modifying agent and having a high temperature.

[0043] In the present invention, when plastic waste is processed, the liquid waste after adding the modifying agent is processed by the twin-screw waste modifying mechanism 400, and the liquid waste is transported by the twin-screw assembly 7. In the process, the twin-screw assembly 7 can also extrude and cut the liquid waste, so that it can be better mixed with the modifying agent. The multiple bottom waste scraping mechanisms 8 arranged on both sides can scrape and stir the liquid waste deposited at the bottom that has not been transported away by the twin-screw assembly 7, so that it can be stirred by the twin-screw assembly 7 and continue to be transported out, effectively solving the problem that a part of the liquid waste deposited at the bottom and containing a large amount of impurities cannot be well mixed and transported out.

[0044] The waste stirring mechanism 9 on one side stirs the liquid waste with solid impurities deposited at the bottom by stirring in a counterclockwise manner, and the stirring plate 92 can also play a certain filtering role, filtering out a part of the fixed impurities, and further stirring the waste with a large amount of solid impurities deposited at the bottom to the upper layer, and being extruded and transmitted by the twin-screw assembly 7.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A twin-screw waste modification device, comprising a twin-screw waste modification mechanism (400), wherein the twin-screw waste modification mechanism (400) is provided with a waste mixing box (1), wherein a twin-screw assembly (7) is provided in the waste mixing box (1), a feed outlet (3) is provided on one side of the upper surface of the waste mixing box (1), a twin-shaft drive assembly (2) is connected to one side of the waste mixing box (1), and the twin-shaft drive assembly (2) is connected to and drives the twin-screw assembly (7), wherein: A plurality of driving mechanisms (4) are evenly arranged in a longitudinal direction on the upper surface of the waste mixing box (1); bottom waste scraping mechanisms (8) are assembled and connected to both sides of the driving mechanisms (4); a chain transmission mechanism (5) is connected to the other side of the bottom waste scraping mechanism (8) away from the driving mechanism (4); and a protective box (10) is arranged outside the chain transmission mechanism (5); The bottom waste scraping mechanism (8) comprises a third bevel gear (81), the third bevel gear (81) is assembled and connected to the driving mechanism (4), a connecting shaft (82) is connected to the middle of the bottom surface of the third bevel gear (81), a third bearing seat (84) is arranged in the middle of the connecting shaft (82), the third bearing seat (84) is installed on the upper surface of the waste mixing box (1), and a scraping frame (83) is fixedly connected to the bottom end of the connecting shaft (82), and the scraping frame (83) is symmetrically arranged on both sides of the double screw assembly (7); The back scraper frame (83) is provided with a plurality of arc walls (831), a guide groove (832) is provided on one side of the arc wall (831), the inner wall of the guide groove (832) has a certain inclined arc, and a limiting convex plate (833) is fixedly connected above the guide groove (832); The chain transmission mechanism (5) comprises a first transmission assembly (51), the first transmission assembly (51) being assembled and connected to the third bevel gear (81), a second transmission assembly (53) being arranged on one side of the first transmission assembly (51), and a waste stirring mechanism (9) being connected and arranged on one side of the second transmission assembly (53); The first transmission assembly (51) comprises a first transmission shaft (511), one end of the shaft body of the first transmission shaft (511) being connected to a second bevel gear (512), the second bevel gear (512) being arranged above a third bevel gear (81), and the second bevel gear (512) being meshed with the third bevel gear (81), and the other end of the shaft body of the first transmission shaft (511) being away from the second bevel gear (512) being provided with a first sprocket (513); The second transmission assembly (53) comprises a second transmission shaft (531), a first bearing seat (532) being arranged in the middle of the second transmission shaft (531), one end of the shaft body of the second transmission shaft (531) being connected to a waste stirring mechanism (9), and the other end of the shaft body of the second transmission shaft (531) being away from the waste stirring mechanism (9) being connected to a second sprocket (533); The second sprocket (533) and the first sprocket (513) are sleeved with a chain (52) on their exteriors; The waste stirring mechanism (9) comprises a connecting head (91), the connecting head (91) being assembled and connected to one end of the shaft body of the second transmission shaft (531), and a plurality of stirring plates (92) being uniformly welded on the side wall of the connecting head (91); A welding head (921) is provided on one side of the stirring plate (92), the upper and lower surfaces of the welding head (921) are arc-shaped, an arc groove (924) is provided on the upper surface of the stirring plate (92), and a plurality of diverter plates (922) are evenly arranged in a transverse manner on the bottom wall of the arc groove (924) of the stirring plate (92); A cavity is provided on one side of the circular arc groove (924); a circular arc plate (926) is provided on the upper surface of the stirring plate (92) located in the cavity; the circular arc plate (926) is inclined at a certain angle toward the circular arc groove (924) below; a plurality of first liquid drainage holes (923) are uniformly provided on the upper surface of the stirring plate (92) located in the cavity; and a plurality of second liquid drainage holes (925) are uniformly provided on the side wall of the stirring plate (92) located on one side of the first liquid drainage holes (923).

2. The twin-screw waste modification equipment according to claim 1, characterized in that: The driving mechanism (4) comprises a double-shaft motor (41), first bevel gears (42) are arranged at the ends of the shaft bodies at both output ends of the double-shaft motor (41), a third bevel gear (81) is arranged below the first bevel gear (42), the first bevel gear (42) is meshed with the third bevel gear (81), and a dustproof frame (6) is arranged at the connection between the first bevel gear (42) and the third bevel gear (81).

3. The twin-screw waste modification equipment according to claim 1, characterized in that: The dustproof frame (6) comprises a support rod (61), the support rod (61) being mounted on the upper surface of the waste mixing box (1), a dustproof cover (62) being arranged on the top of the support rod (61), and the dustproof cover (62) covering the connection between the first bevel gear (42) and the third bevel gear (81).

4. The twin-screw waste modification equipment according to claim 1, characterized in that: The waste mixing box (1) has a plurality of mounting holes (11) evenly arranged on the side walls on both sides of the box body, the first bearing seat (532) is mounted on the mounting holes (11), a plurality of rotating boxes (12) are arranged on both sides of the side walls of the box body of the waste mixing box (1), a bottom waste scraping mechanism (8) is arranged to rotate in the inner cavity of the rotating box (12), a protective cover (14) is installed on both sides of the upper surface of the waste mixing box (1) and located above each waste stirring mechanism (9), and a discharge port (13) is arranged on the other side of the waste mixing box (1) away from the dual-axis drive assembly (2) connected thereto.

5. The twin-screw waste modification equipment according to claim 1, characterized in that: The protective box (10) cover is arranged outside the chain transmission mechanism (5), and the protective box (10) is installed on the side wall surfaces of both sides of the waste mixing box (1). A protective cover plate (101) is installed on one side of the protective box (10), and a second bearing seat (102) is arranged on the protective cover plate (101). The first transmission shaft (511) is rotatably arranged on the inner ring of the second bearing seat (102).

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