A continuous production device and process for regenerating PBT polyester into degradable polyester particles by polyester chemistry

Abstract

The application discloses a kind of continuous production device and process for degradable polyester particles by PBT polyester chemical regeneration, it relates to chemical regeneration recycling technical field, the device includes base, there is conveying belt on the top of base, mixed processing box is located conveying belt side, drying pretreatment mechanism and export grinding mechanism are fixed in mixed processing box inside;Drying pretreatment mechanism includes the guide plate fixed in the inside of mixed processing box, and guide plate is inclined to the inside of mixed pretreatment box;Export grinding mechanism includes the cylinder in the bottom of mixed processing box, and cylinder is fixed with export pipe towards the outside end of mixed processing box, export pipe is close to the bottom of cylinder Setting;Mixed processing box inclined side is equipped with fractionation tank, and cover plate is hingedly connected on the top of fractionation tank, cover plate side is equipped with the clamping groove for export pipe to extend into, and fractionation tank bottom is connected with storage cylinder;The device is high in integration degree, and high in automation degree, improve production efficiency, while it can improve subsequent PBT polyester waste recycling efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of chemical regeneration and recycling, and particularly relates to a continuous production device and process for regenerating PBT polyester into degradable polyester particles. BACKGROUND

[0002] Traditional polyester is non-degradable, causing serious "white pollution" to the natural environment. With the improvement of people's environmental protection consciousness, relevant regulations have been formulated and introduced globally. The use of non-degradable plastics is restricted through measures such as partial ban, limited use, mandatory collection, and pollution tax collection, and the development of degradable new materials has gradually become a market hotspot.

[0003] PBT is a traditional thermoplastic polymer material, widely used in chemical fibers, packaging, engineering and other fields. At present, the market mainly uses the regeneration method of drying, melting, and granulation / direct spinning to obtain products that meet market demand. However, as the performance of recycled PBT gradually decreases, PBT cannot be recycled and regenerated, and the presence of other esters during the utilization process also affects the recycling and regeneration of PBT. In the prior art, alcoholysis is generally used for separation, but there is no related record for integrated equipment, so an efficient and continuous production device is needed for the recycling and regeneration of PBT. SUMMARY

[0004] The purpose of the present application is to provide a continuous production device for regenerating PBT polyester into degradable polyester particles, which has high integration degree, high automation degree, high production efficiency, and high PBT polyester waste recycling efficiency.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A continuous production device and process for regenerating PBT polyester into degradable polyester particles, comprising a base, the base is double-layered, a first support is fixed on the top of the base, a conveyor belt is rotatably connected to the end of the first support away from the base, a mixing treatment box is arranged on one side of the conveyor belt, a second support is fixed on the bottom of the mixing treatment box, the second support is inclined towards the side of the conveyor belt, a drying pretreatment mechanism and a discharge grinding mechanism are fixed inside the mixing treatment box.

[0007] The drying pretreatment mechanism is used for waste grinding pretreatment, comprising a guide plate fixed inside the mixing treatment box, the guide plate is inclined towards the inside of the mixing pretreatment box.

[0008] The export grinding mechanism is used for grinding and exporting the crushed waste materials, comprising a barrel fixed at the bottom of the mixing treatment box, a rotating shaft rotatably connected inside the barrel, a export pipe fixed at the outside end of the barrel towards the mixing treatment box, the export pipe being arranged close to the bottom of the barrel;

[0009] The mixing treatment box is provided with a fractionation box at the inclined side, the fractionation box being located below the export pipe, a cover plate being hingedly connected at the top of the fractionation box, the cover plate being provided with a clamping groove for the export pipe to extend into, and a storage barrel being connected at the bottom of the fractionation box.

[0010] As a preferred scheme of the present application, the guide plate is internally provided with leakage grooves, the leakage grooves being equidistantly arranged along the width direction of the guide plate, baffle plates being fixed at the two sides of the guide plate, and electric heating resistance wires being embedded inside the guide plate.

[0011] As a preferred scheme of the present application, the guide plate is provided with a recess at the middle part, the recess being internally provided with the same leakage grooves, a rotating rod being rotatably connected between the two baffle plates and located between the recesses, the rotating rod being rotatably connected with the inner wall of the mixing treatment box at both ends extending out of the baffle plates, one end of the rotating rod extending out along the side of the mixing treatment box and being fixed with a first motor, the first motor being installed at the side of the mixing treatment box, and arc-shaped paddles being arranged outside the rotating rod along the circumferential direction of the rotating rod.

[0012] As a preferred scheme of the present application, the barrel is provided with an opening at the top, the opening being located below the guide plate, and a protective plate being fixed at the opening.

[0013] As a preferred scheme of the present application, the rotating shaft is externally fixed with a grinding roller and two export screws, the grinding roller being located between the two export screws, the grinding roller being provided with inclined surfaces at both ends and being coaxially rotatable with the two export screws, a grinding plate being fixed on the inner wall of the barrel corresponding to the position of the grinding roller, one end of the rotating shaft extending out along the side of the barrel and being fixed with a second motor at the extending end, the second motor being installed inside the barrel.

[0014] As a preferred scheme of the present application, the cover plate is fixed with a piston rod at the top, the piston rod being connected with an oil cylinder at the end away from the cover plate, the piston rod being symmetrically arranged about the cover plate, the oil cylinder being fixed at the side of the first support, a plurality of first fixed tubes being fixed inside the cover plate, a second fixed tube being slidably connected inside the first fixed tube, a pressing plate being fixed at the end of the second fixed tube away from the first fixed tube, the pressing plate being outwardly convex at the end towards the fractionation box, springs being fixed inside the first fixed tubes and at the other end of the second fixed tube.

[0015] As a preferred scheme of the present application, the vertical rods are arranged along the four corners of the fractionating tank, two L-shaped plates are fixed between the vertical rods on the same side, and a non-woven fabric is fixed between the two L-shaped plates; the vertical rods extend from the bottom of the fractionating tank, a push plate is fixed at the extending end of the vertical rod, a gas cylinder is connected to the bottom of the push plate, the gas cylinder is fixed inside the base, a gas pipe and a liquid outlet pipe are respectively connected to the two sides of the fractionating tank, and the liquid outlet pipe and the gas pipe are both in communication with the inside of the fractionating tank; the L-shaped plate is in abutment with the bottom of the fractionating tank in the initial state, and the two L-shaped plates in the initial state shield the gas pipe and the liquid outlet pipe respectively.

[0016] As a preferred scheme of the present application, the liquid outlet pipe is connected with a pump body at the end away from the fractionating tank, and the pump body is connected to the side of the storage cylinder at the end away from the liquid outlet pipe.

[0017] As a preferred scheme of the present application, ventilation grooves are arranged on the two sides of the mixing treatment tank, and a plurality of ventilation grooves are arranged along the width direction of the mixing treatment tank.

[0018] As a preferred scheme of the present application, rails are fixed on the sides of the base, the rails are symmetrically arranged with respect to the fractionating tank, a first lead screw is rotatably connected inside one of the rails, a guide rod is fixed inside the other rail, an L-shaped frame is threadedly connected to the outside of the first lead screw, the other end of the L-shaped frame is slidably connected with the guide rod, a third motor is connected to one end of the first lead screw, a sliding groove is arranged inside the L-shaped frame, a second lead screw is rotatably connected inside the sliding groove, a moving frame is threadedly connected to the outside of the second lead screw, a fourth motor is connected to one end of the second lead screw, a fifth motor is fixed to the end of the moving frame away from the L-shaped frame, a belt pulley is connected to the output end of the fifth motor, two belt pulleys are arranged in the height direction, a belt is connected between the two belt pulleys, a connecting pipe is fixed inside the upper belt pulley, a suction cylinder is fixed to the end of the connecting pipe facing the fractionating tank, a telescopic pipe is rotatably connected to the other end of the connecting pipe, a fixing frame is arranged outside the connecting pipe, the fixing frame is fixed to the moving frame, the connecting pipe is rotatably arranged inside the fixing frame, and a negative pressure device is connected to the end of the telescopic pipe away from the connecting pipe.

[0019] The present application also provides a continuous production process for regenerating PBT polyester into degradable polyester particles, which comprises the following steps:

[0020] ① After the PBT polyester solid waste is coarsely crushed, it is placed on a conveying belt and conducted to the inside of the mixing treatment tank, and the guiding plate is connected during the conducting;

[0021] ② After the conveying belt works, the electric heating resistance wire in the guiding plate is electrified, so that the temperature of the whole guiding plate is increased, and the PBT polyester waste after the conveying belt falls on the guiding plate and is dried by the heating of the guiding plate;

[0022] ③, After the PBT polyester waste material is guided out through the guide plate, the PBT polyester waste material falls into the cylinder below, and the guide-out screw rotates under the driving of the second motor, conducts the PBT polyester waste material entering the cylinder, and conducts the PBT polyester waste material to the grinding roller, and the grinding plate on the inner wall of the cylinder grinds and crushes the PBT polyester waste material, and the guide-out screw continuously pushes the subsequent PBT polyester waste material entering, so that the PBT polyester crushed material enters the fractionating box;

[0023] ④, After entering the fractionating box, alkali liquor is added to remove acid, and alcohol substances are added for alcoholysis, and the fractionating box is heated for fractionation, and the fractionation is completed at the distillation temperature corresponding to the PBT polyester, and the liquid obtained after fractionation is liquid PBT polyester;

[0024] ⑤, The adsorption cylinder is controlled to be close to the fractionating cylinder, and the non-woven fabric is driven to move upward, and the liquid PBT polyester is filtered and enters the storage cylinder for subsequent processing and utilization.

[0025] In summary, the beneficial technical effects of the present application are: the device integrates the processes of PBT polyester waste material feeding, drying and separation, crushing and grinding, leaching and fractionation, and solid-liquid separation and collection, the overall integration degree of the device is high, the degree of automation is high, the production efficiency is improved, specifically, after the PBT polyester waste material feeding, the drying and separation treatment is carried out, the PBT polyester waste material is crushed after the drying and separation treatment, the crushing is guided out at the same time, the soaking is carried out, the solid residue is separated from the liquid after the soaking, the liquid is introduced into the storage cylinder for extraction and purification, the adsorption cylinder is arranged, the solid residue after solid-liquid separation can be quickly collected, the electric heating resistance wire arranged in the guide plate is used to separate and remove water from the PBT polyester waste material before grinding, the solid residue after solid-liquid separation can be quickly collected, the overall extraction efficiency is high, the manual participation link is reduced, the water is separated and removed from the PBT polyester waste material before grinding, the PBT polyester waste material extraction efficiency after fractionation is improved, and the PBT polyester recycling rate in the PBT polyester waste material is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and do not constitute a limitation on the present application. In the drawings:

[0027] Figure 1 is a structure schematic view of a continuous production device for regenerating PBT polyester into degradable polyester particles according to the present embodiment;

[0028] Figure 2 is a structure schematic view of a continuous production device for regenerating PBT polyester into degradable polyester particles according to the present embodiment Figure 1 is a top view of the device of

[0029] Figure 3It is a continuous production device for regenerating PBT polyester into degradable polyester particles by chemical method Figure 2 The cross-sectional view of A-A of the schematic diagram of

[0030] Figure 4 It is a continuous production device for regenerating PBT polyester into degradable polyester particles by chemical method Figure 1 The side view of the schematic diagram of

[0031] Figure 5 It is a continuous production device for regenerating PBT polyester into degradable polyester particles by chemical method Figure 3 The enlarged schematic diagram of A in

[0032] Figure 6 It is a continuous production device for regenerating PBT polyester into degradable polyester particles by chemical method Figure 3 The enlarged schematic diagram of B in

[0033] In the figure: 1, base; 2, first support; 3, conveying belt; 4, mixing treatment box; 5, second support; 6, guide plate; 7, cylinder; 8, rotating shaft; 9, discharge pipe; 10, cover plate; 11, clamping groove; 12, storage cylinder; 13, leakage groove; 14, baffle; 15, recess; 16, fixing frame; 17, rotating rod; 18, first motor; 19, arc-shaped toggle; 20, opening; 21, protection plate; 22, grinding roller; 23, discharge screw; 24, grinding plate; 25, second motor; 26, oil cylinder; 27, piston rod; 28, first fixed pipe; 29, pressing plate; 30, second fixed pipe; 31, spring; 32, fractional distillation box; 33, vertical rod; 34, L-shaped plate; 35, non-woven fabric; 36, push plate; 37, air cylinder; 38, air pipe; 39, liquid outlet pipe; 40, pump body; 41, ventilation groove; 42, track; 43, first lead screw; 44, U-shaped frame; 45, guide rod; 46, sliding groove; 47, second lead screw; 48, fourth motor; 49, moving frame; 50, fifth motor; 51, pulley; 52, belt; 53, connecting pipe; 54, adsorption cylinder; 55, telescopic pipe; 56, third motor. DETAILED DESCRIPTION

[0034] The application will be further described in details in conjunction with the drawings.

[0035] The technical solutions in the embodiments of the application will be described clearly and completely below in conjunction with the drawings of the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0036] Please refer toFigures 1-6 The application provides a technical scheme: a continuous production device for regenerating PBT polyester into degradable polyester particles by using polyester chemistry, which comprises a base 1, the base 1 is provided in a double-layer mode, a first support 2 is fixed to the top of the base 1, a conveying belt 3 is rotationally connected to the end of the first support 2 away from the base 1, a mixing treatment box 4 is arranged on one side of the conveying belt 3, a second support 5 is fixed to the bottom of the mixing treatment box 4, the second support 5 is arranged in an inclined mode towards the side of the conveying belt 3, and a drying pretreatment mechanism and a discharging grinding mechanism are fixed in the mixing treatment box 4.

[0037] The drying pretreatment mechanism is used for grinding pretreatment of waste materials and comprises a guide plate 6 fixed in the mixing treatment box 4, the guide plate 6 is arranged in an inclined mode towards the inside of the mixing pretreatment box.

[0038] The discharging grinding mechanism is used for grinding and discharging waste materials and comprises a cylinder 7 fixed to the bottom of the mixing treatment box 4, a rotating shaft 8 rotationally connected to the inside of the cylinder 7, a discharging pipe 9 fixed to the end of the cylinder 7 away from the mixing treatment box 4, and the discharging pipe 9 is arranged close to the bottom of the cylinder 7.

[0039] A fractionation box 32 is arranged on the inclined side of the mixing treatment box 4, the fractionation box 32 is arranged below the discharging pipe 9, a cover plate 10 is hingedly connected to the top of the fractionation box 32, a clamping groove 11 for the discharging pipe 9 to extend into is arranged on the side of the cover plate 10, and a storage cylinder 12 is connected to the bottom of the fractionation box 32.

[0040] Ventilation grooves 41 are arranged on the two sides of the mixing treatment box 4, the ventilation grooves 41 are arranged at intervals along the width direction of the mixing treatment box 4, and the ventilation grooves 41 are used for heat dissipation and water vapor collection during drying of the inside of the mixing treatment box 4.

[0041] In the embodiment, PBT polyester waste material feeding, drying and separation treatment after PBT polyester waste material feeding, grinding of the PBT polyester waste material after the drying and separation treatment, discharging while grinding, alkali immersion, fractionation after the alkali immersion, separation of the PBT polyester from other esters at the PBT polyester distillation temperature, and thus solid slag and liquid are obtained, the liquid is introduced into the storage cylinder 12 for reuse, and the fractionation box 32 has a heating function.

[0042] Firstly, PBT polyester waste material bodies to be used are placed on the conveying belt 3, the PBT polyester waste material bodies are coarsely treated through previous processes, and the PBT polyester waste material bodies are introduced into the inside of the mixing treatment box 4 through the conveying belt 3, and the PBT polyester waste material bodies are connected to the guide plate 6, wherein a leakage groove 13 is arranged in the guide plate 6, the leakage grooves 13 are arranged at intervals along the width direction of the guide plate 6, baffle plates 14 are fixed to the two sides of the guide plate 6, and electric heating resistance wires are embedded in the inside of the guide plate 6.

[0043] The middle part of the guide plate 6 is provided with a groove 15, and the inside of the groove 15 is provided with the same leakage groove 13. The rotating rod 17 rotatingly connected to the two baffles 14 is arranged between the grooves 15. The rotating rod 17 is rotatably connected to the inner wall of the mixing treatment box 4 at both ends of the rotating rod 17 extending out of the baffle 14. The one end of the rotating rod 17 extends out along the side of the mixing treatment box 4, and the first motor 18 is fixed to the extending end. The first motor 18 is installed on the side of the mixing treatment box 4. The arc-shaped flapper 19 is arranged on the outside of the rotating rod 17 along the circumferential direction of the rotating rod 17.

[0044] After the conveyor belt 3 works, the electric heating resistance wire in the guide plate 6 conducts electricity, so that the temperature of the whole guide plate 6 increases. The PBT polyester waste material after passing through the conveyor belt 3 falls on the guide plate 6, and is dried by the heating of the guide plate 6. Meanwhile, the guide plate 6 is arranged in an inclined manner, so that the PBT polyester waste material can slide along the guide plate 6. In the sliding process, the PBT polyester waste material enters the groove 15 part of the guide plate 6. The design of the groove 15 increases the residence time of the PBT polyester waste material on the guide plate 6, which can further improve the drying efficiency and remove the water droplets on the surface of the PBT polyester waste material, thereby improving the subsequent processing efficiency. At the same time, the first motor 18 is turned on. When the first motor 18 works, the rotating rod 17 is driven to rotate, and the arc-shaped flapper 19 is driven to rotate by the rotating rod 17. The PBT polyester waste material in the groove 15 is stirred and guided out. At the same time, the PBT polyester waste material is separated after passing through the guide plate 6 to avoid stacking. After being stirred and guided out, the PBT polyester waste material falls into the lower cylinder 7.

[0045] Specifically, the opening 20 is arranged at the top of the cylinder 7, and the opening 20 is located below the guide plate 6. The protective plate 21 is fixed at the opening 20.

[0046] The rotating shaft 8 is fixed with the grinding roller 22 and the guide screw 23 outside the rotating shaft 8. The guide screw 23 is provided with two guide screws 23. The grinding roller 22 is located between the two guide screws 23. The grinding roller 22 is provided with inclined surfaces at both ends of the grinding roller 22. The grinding roller 22 and the two guide screws 23 are coaxially rotatable. The grinding plate 24 is fixed on the inner wall of the cylinder 7 corresponding to the position of the grinding roller 22. The one end of the rotating shaft 8 extends out along the side of the cylinder 7, and the second motor 25 is fixed to the extending end. The second motor 25 is installed in the cylinder 7.

[0047] PBT polyester waste material along the opening 20 into the barrel 7, opening 20 is provided with a protective plate 21 to avoid PBT polyester waste material, where the rotating shaft 8 outside the presence of grinding roller 22 and lead screw 23, grinding roller 22 is placed between two lead screw 23 position, with the second motor 25 drive, lead screw 23 rotation, the PBT polyester waste material into the barrel 7 inside the conduction, toward the grinding roller 22 conduction, while the grinding roller 22 and barrel 7 inner wall of the grinding plate 24 on the PBT polyester waste material grinding and crushing, with the rotating shaft 8 continues to rotate, lead screw 23 continue to advance the subsequent PBT polyester waste material, located in the grinding roller 22 crushed material is pushed forward to another lead screw 23, with the rotation of the lead screw 23, while the mixing treatment tank 4 is inclined to set, and more convenient to make PBT polyester waste material along the lead pipe 9 extrusion to the fractionation tank inside the soaking process.

[0048] The structure of the rotating shaft 8 inside the barrel 7, taking into account the grinding and extrusion operation, saving electricity energy consumption, while facilitating integrated automatic processing.

[0049] Wherein the fractionation tank top cover plate 10, located in the cover plate 10 top fixed with piston rod 27, piston rod 27 away from the cover plate 10 end connected with the oil cylinder 26, the piston rod 27 about the cover plate 10 symmetrical arrangement, oil cylinder 26 is fixed in the first bracket 2 side, cover plate 10 is fixed with a plurality of first fixed tube 28 inside, the first fixed tube 28 inside the second fixed tube 30 is connected with the slide, the second fixed tube 30 away from the first fixed tube 28 end fixed with the pressing plate 29, the pressing plate 29 towards the end of the outer convex fractionation tank, the first fixed tube 28 is fixed with a spring 31 inside, the other end of the spring 31 is fixed in the second fixed tube 30 end.

[0050] The fractionation tank bottom is connected with the vertical rod 33, the vertical rod 33 along the four corners of the fractionation tank is arranged, the two vertical rods 33 between the same side are fixed with the L type plate 34, the two L type plates 34 between the non-woven fabric 35 is fixed, the vertical rod 33 is stretched out along the bottom of the fractionation tank, the vertical rod 33 is fixed with the push plate 36 at the end of the extension, the push plate 36 is connected with the air cylinder 37 at the bottom, the air cylinder 37 is fixed in the bottom of the base 1, the air pipe 38 and the liquid outlet pipe 39 are connected on both sides of the fractionation tank, the liquid outlet pipe 39 and the air pipe 38 are communicated with the inside of the fractionation tank, the L type plate 34 is in contact with the bottom of the fractionation tank in the initial state, the two L type plates 34 in the initial state shield the air pipe 38 and the liquid outlet pipe 39.

[0051] The liquid outlet pipe 39 is connected with the pump body 40 away from the fractionation tank end, and the pump body 40 is connected with the storage cylinder 12 side away from the liquid outlet pipe 39 end.

[0052] Specifically, the PBT polyester waste material enters the inside of the fractionating box, the cover plate 10 is opened to add the leaching liquid, the oil cylinder 26 is opened, the oil cylinder 26 drives the cover plate 10 to move downward, the fractionating box is closed, and meanwhile the guide pipe 9 is located between the cover plate 10 and the fractionating box, without affecting the closing of the cover plate 10.

[0053] After the PBT polyester waste material is conveyed on the conveying belt 3, the soaking time is recorded. In the prior art, the soaking time is generally 24 hours, the air cylinder 37 is opened, the two L-shaped plates 34 are driven to move upward, the non-woven fabric 35 between the two L-shaped plates 34 moves upward, meanwhile the L-shaped plate 34 no longer touches the air pipe 38 and the liquid outlet pipe 39, the air pipe 38 and the liquid outlet pipe 39 are connected, the air pipe 38 can be connected with an air blowing device outside, with the upward movement of the non-woven fabric 35, the soaked PBT polyester waste material is squeezed between the non-woven fabric 35 and the pressing plate 29, and then the liquid in the PBT polyester waste material is filtered and squeezed out along the non-woven fabric 35 to the bottom of the fractionating box, with the opening of the pump body 40 and the air blowing device, the liquid can be quickly guided out to the storage cylinder 12 along the liquid outlet pipe 39.

[0054] When the non-woven fabric 35 is squeezed between the non-woven fabric 35 and the pressing plate 29, the pressing plate 29 has an elastic structure, the second fixed pipe 30 slides along the inside of the first fixed pipe 28, touches the spring 31, the spring 31 is compressed, and then provides a downward force to the pressing plate 29, so that the squeezing pressure remains high, and the liquid in the waste material can be quickly squeezed out.

[0055] Further, the base 1 is fixed with rails 42 on the side, the rails 42 are symmetrically arranged about the fractionating box, one of the rails 42 is rotatably connected with a first lead screw 43 inside, the other rail 42 is fixed with a guide rod 45 inside, the first lead screw 43 is threadedly connected with a U-shaped frame 44 outside, the other end of the U-shaped frame 44 is slidably connected with the guide rod 45, one end of the first lead screw 43 is connected with a third motor 56, the U-shaped frame 44 is provided with a sliding groove 46 inside, the sliding groove 46 is rotatably connected with a second lead screw 47 inside, the second lead screw 47 is threadedly connected with a moving frame 49 outside, one end of the second lead screw 47 is connected with a fourth motor 48, the moving frame 49 is fixed with a fifth motor 50 away from the U-shaped frame 44, the fifth motor 50 is connected with a belt 52 wheel 51 at the output end, the belt 52 wheel 51 is provided with two in the height direction, the two belt 52 wheels 51 are connected with a belt 52, the belt 52 wheel 51 inside is fixed with a connecting pipe 53, the connecting pipe 53 is fixed with a suction cylinder 54 towards the fractionating box, the other end of the connecting pipe 53 is rotatably connected with a telescopic pipe 55, the connecting pipe 53 is provided with a fixed frame 16 outside, the fixed frame 16 is fixed on the moving frame 49, the connecting pipe 53 rotates in the fixed frame 16, and the telescopic pipe 55 is connected with a negative pressure device outside away from the connecting pipe 53.

[0056] Wherein under the driving of the third motor, the first screw rod 43 rotates, the L-shaped frame 44 starts to move towards the base 1, under the driving of the fourth motor 48, the second screw rod 47 rotates, the moving frame 49 can move horizontally, and then the moving frame 49 can move in X and Y directions, drive the suction cylinder 54 to move, the suction cylinder 54 is provided with a plurality of through holes on the side, for adsorbing solid slag, after the above extrusion is completed, the oil cylinder 26 is continuously opened to drive the cover plate 10 to move upwards, the air cylinder 37 is opened to drive the L-shaped plate 34 to move upwards, so that the solid slag on the non-woven fabric 35 is exposed to the fractionating box, and the protrusion of the pressing plate 29 can make the solid slag concentrate on the non-woven fabric 35, with the movement of the suction cylinder 54, the suction cylinder 54 can be inserted into the solid slag, through the external connection of the telescopic pipe 55 to the negative pressure equipment, negative pressure is generated in the suction cylinder 54, the solid slag is adsorbed along the suction cylinder 54 into the telescopic pipe 55, and is extracted and collected, when the solid slag is extracted and collected, the suction cylinder 54 can move in multiple directions, and the fifth motor 50 drives the connecting pipe 53 to rotate, and then the suction cylinder 54 can rotate, improving the extraction and collection efficiency.

[0057] The working principle of the present application is that the device integrates the processes of PBT polyester waste material feeding, drying and separation, crushing and grinding, soaking and leaching, and solid-liquid separation and collection. Specifically, after the PBT polyester waste material feeding, the PBT polyester waste material is crushed after the drying and separation treatment, and the crushed material is guided out for soaking. After soaking, the solid slag and the liquid are separated, the liquid is guided into the storage cylinder 12 for reuse, and the solid slag after solid-liquid separation can be quickly collected. The overall extraction efficiency is high, the manual participation link is reduced, the PBT polyester waste material is separated and dehydrated before grinding, the subsequent PBT polyester waste material distillation efficiency is improved, and the PBT polyester reuse rate in the PBT polyester waste material is improved.

[0058] It should be noted that, in the present text, relational terms such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus including a list of elements does not only include those elements, but also includes other elements not explicitly listed, or inherent to such a process, method, article, or apparatus.

[0059] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent ones. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A continuous production apparatus for degradable polyester particles based on chemical regeneration using PBT polyester, characterized by, The utility model provides a waste material processing device, including base (1), base (1) is two layer arrangement, the top of base (1) is fixed with first support (2), first support (2) is away from base (1) end rotatory connection has conveyer belt (3), is located conveyer belt (3) one side is equipped with mixed processing box (4), the bottom of mixed processing box (4) is fixed with second support (5), and second support (5) is towards conveyer belt (3) side and is arranged obliquely, the inside fixed with dry pretreatment mechanism and export grinding mechanism of mixed processing box (4); The dry pretreatment mechanism is used for waste material grinding pretreatment, including the guide plate (6) fixed in the mixed processing box (4), the guide plate (6) is arranged obliquely towards the inside of mixed pretreatment box, the electric heating resistance wire is embedded in the inside of guide plate (6); The export grinding mechanism is used for grinding and exporting waste material, including the cylinder (7) fixed in the bottom of mixed processing box (4), the rotatory shaft (8) is rotatory connected in the inside of cylinder (7), the export pipe (9) is fixed to the outside end of mixed processing box (4) towards cylinder (7), and the export pipe (9) is close to the bottom of cylinder (7) and is arranged; The inclined side of mixed processing box (4) is equipped with fractionation tank (32), and the fractionation tank (32) is located below the export pipe (9), and the fractionation tank (32) top is hingedly connected with the cover plate (10), and the cover plate (10) side is equipped with the clamping groove (11) for the export pipe (9) to extend into, the fractionation tank (32) bottom is communicated with the storage cylinder (12), the fractionation tank (32) bottom is slidably connected with the vertical rod (33), the vertical rod (33) is arranged along the four corners of fractionation tank (32), the L-shaped plate (34) is fixed between two vertical rods (33) on the same side, the non-woven fabric (35) is fixed between two L-shaped plates (34), the vertical rod (33) extends out along the bottom of fractionation tank (32), the push plate (36) is fixed to the extending end of vertical rod (33), the air cylinder (37) is connected to the bottom of push plate (36), the air pipe (38) and liquid outlet pipe (39) are connected to the two sides of fractionation tank (32) respectively, the liquid outlet pipe (39) and air pipe (38) are communicated with the inside of fractionation tank (32), the L-shaped plate (34) is in initial state and abuts against the bottom of fractionation tank (32), two L-shaped plates (34) in initial state shield the air pipe (38) and liquid outlet pipe (39) respectively; The rotatory shaft (8) is fixed with grinding roller (22) and export screw rod (23) outside, the export screw rod (23) is equipped with two, and the grinding roller (22) is located between two export screw rods (23), and the grinding roller (22) both ends are equipped with inclined surface, and the grinding roller (22) rotates coaxially with two export screw rods (23), and the grinding plate (24) is fixed on the inner wall of cylinder (7) in position corresponding to grinding roller (22), and the rotatory shaft (8) one end extends out along the side of cylinder (7), and the second motor (25) is fixed to the extending end, and the second motor (25) is installed in the inside of cylinder (7); The piston rod (27) is fixed on the top of the cover plate (10), the oil cylinder (26) is connected to the end of the piston rod (27) away from the cover plate (10), a plurality of first fixed pipes (28) are fixed in the cover plate (10), the second fixed pipe (30) is slidably connected in the first fixed pipe (28), the pressing plate (29) is fixed to the end of the second fixed pipe (30) away from the first fixed pipe (28), and the pressing plate (29) is outwardly convex towards the end of the fractionating tank.

2. The continuous production device for regenerating PBT polyester chemically into degradable polyester particles according to claim 1, characterized in that, The guide plate (6) is internally provided with a plurality of leak grooves (13) equidistantly arranged along the width direction of the guide plate (6), and the guide plate (6) is fixed with a baffle (14) on both sides.

3. The continuous production device for regenerating PBT polyester chemically into degradable polyester particles according to claim 2, characterized in that, The middle part of the guide plate (6) is provided with a groove (15), the groove (15) is internally provided with the same leak groove (13), and a rotating rod (17) is rotatably connected between the two baffles (14) and located between the grooves (15). Both ends of the rotating rod (17) are rotatably connected with the inner wall of the mixing treatment tank (4), one end of the rotating rod (17) extends along the side of the mixing treatment tank (4), the first motor (18) is fixed to the extending end, the first motor (18) is installed on the side of the mixing treatment tank (4), and the arc-shaped paddle (19) is arranged on the outer side of the rotating rod (17).

4. The continuous production device for regenerating PBT polyester chemically into degradable polyester particles according to claim 2, characterized in that, The top of the cylinder (7) is provided with an opening (20) below the guide plate (6), and the protective plate (21) is fixed at the opening (20).

5. The continuous production device and process for regenerating PBT polyester chemically into degradable polyester particles according to claim 1, characterized in that, The piston rod (27) is symmetrically arranged with respect to the cover plate (10), the oil cylinder (26) is fixed on the side of the first support (2), the spring (31) is fixed in the first fixed pipe (28), and the other end of the spring (31) is fixed to the end of the second fixed pipe (30).

6. The continuous production device for regenerating PBT polyester chemically into degradable polyester particles according to claim 1, characterized in that, The gas cylinder (37) is fixed in the base (1), the liquid outlet pipe (39) is connected with the pump body (40) away from the fractionating tank (32), and the pump body (40) is connected to the side of the storage cylinder (12) away from the liquid outlet pipe (39).

7. The continuous production device for regenerating PBT polyester chemically into degradable polyester particles according to claim 1, characterized in that, The mixing treatment tank (4) is provided with a plurality of ventilation grooves (41) on both sides along the width direction of the mixing treatment tank (4). 8.The continuous production device for regenerating PBT polyester chemically into degradable polyester particles according to claim 1, characterized in that, The base (1) side is fixed with track (42), track (42) is about symmetrical setting of fractionating tank, one of track (42) inside rotatory connection has first lead screw (43), another track (42) inside fixed with guide rod (45), first lead screw (43) outside screw thread connection has U-shaped frame (44), U-shaped frame (44) another end and guide rod (45) sliding connection, first lead screw (43) one end is connected with third motor (56), U-shaped frame (44) inside is equipped with sliding slot (46), sliding slot (46) inside rotatory connection has second lead screw (47), second lead screw (47) outside screw thread connection has moving frame (49), second lead screw (47) one end is connected with fourth motor (48), moving frame (49) is away from U-shaped frame (44) end fixed with fifth motor (50), fifth motor (50) output end is connected with belt (52) wheel (51), belt (52) wheel (51) is equipped with two in height direction, two belt (52) wheel (51) between connection has belt (52), located above belt (52) wheel (51) inside fixed with connecting pipe (53), connecting pipe (53) is fixed with adsorption cylinder (54) towards fractionating tank end, connecting pipe (53) another end rotatory connection has telescopic pipe (55), connecting pipe (53) outside is equipped with fixed frame (16), fixed frame (16) is fixed on moving frame (49), connecting pipe (53) rotates in fixed frame (16) inside, telescopic pipe (55) is away from connecting pipe (53) end external connection negative pressure equipment.

9. A continuous production process for chemically recycling PBT polyester into degradable polyester pellets using the device of claim 1, characterized in that, It comprises the following steps: ①, the PBT polyester solid waste is placed on the conveyor belt after coarse crushing, and is introduced into the mixing treatment box through the conveyor belt, and is connected to the guide plate; ②, after the work of the conveyor belt, the electric heating resistance wire in the guide plate is conductive, so that the temperature of the whole guide plate is increased, and the PBT polyester waste after the conveyor belt falls on the guide plate and is dried by the heating of the guide plate; ③, after the PBT polyester waste is pushed out in the guide plate, it falls into the cylinder below, and the PBT polyester waste in the cylinder is conducted to the grinding roller under the driving of the second motor, and the grinding plate on the inner wall of the cylinder grinds the PBT polyester waste, and the PBT polyester waste is continuously pushed into the fractionating tank by the outgoing screw rod under the continuous rotation of the rotating shaft; ④, after entering the fractionating tank, the PBT polyester waste is acidified by adding alkali liquor, and is alcoholized by adding alcohol, and is heated and fractionated by the fractionating tank, and the fractionation is completed at the distillation temperature of the PBT polyester, and the liquid obtained after fractionation is liquid PBT polyester; ⑤, control the adsorption cylinder close to the fractionating cylinder, and drive the non-woven fabric to move up, and the liquid PBT polyester is filtered and enters the storage cylinder for subsequent processing and utilization.

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