Polyester waste recycling device

Abstract

The utility model provides a polyester waste recovery regeneration device, including crushing subassembly, material delivery subassembly and reaction kettle, crushing subassembly includes crushing box, crushing roll and first motor, material delivery subassembly includes delivery pipe, delivery rod and second motor, delivery rod is equipped with helical blade, delivery pipe both ends are equipped with feed inlet and discharge port respectively, and the second motor is equipped with feed inlet and discharge port respectively. The feeding port is communicated with the discharging end of the crushing box, the discharging port is communicated with the feeding end of the reaction kettle, rotatable rotating rods are arranged in the feeding port and the discharging port respectively, the rotating rods are parallel to the conveying rods respectively and are in transmission connection with the conveying rods, the rotating rods are sleeved with a plurality of rotating discs respectively, and the rotating discs are arranged at intervals in the axial direction of the rotating rods. A plurality of stirring plates are arranged on the rotating disc in the circumferential direction of the rotating rod at intervals. According to the utility model, the technical problem that the normal operation of the recovery device is influenced because the crushed waste blocks the recovery device is solved, and the technical effects of preventing the waste from blocking the conveying pipe and improving the reliability of equipment are achieved.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and in particular to a polyester waste recycling and regeneration device. Background Technology

[0002] Polyester is a general term for polymers obtained by polycondensation of polyols and polyacids. It is a class of engineering plastics with excellent performance and wide applications. Currently, polyester waste is usually recycled and reused using the ethylene glycol depolymerization method, which generally includes steps such as waste crushing, alcoholysis of waste with ethylene glycol (EG) to esterification, and esterification participating in polycondensation reaction to obtain the product.

[0003] Chinese utility model patent CN220224049U discloses a film waste recycling device, comprising a crushing box and a degradation tank arranged vertically. The crushing box has a feed hopper at its top, and inside the crushing box are two symmetrically arranged crushing wheels and an inclined guide plate. The guide plate is located below the crushing wheels, and the discharge port of the crushing box is located at the lower end of the guide plate. A transmission mechanism connected to the crushing wheels is installed on the back of the crushing box. The discharge port of the crushing box is connected to the feed port at the top of the degradation tank via a conveying pipe. The top of the degradation tank has a liquid inlet pipe, and the inner wall of the degradation tank has several liquid outlet pipes evenly distributed with evenly distributed liquid outlet holes. The bottom of the degradation tank has a discharge pipe. This film waste recycling device uses the crushing wheels inside the crushing box to crush polyester film waste, reducing the space occupied by the polyester film waste and thus increasing the amount of polyester film waste that can be added to the degradation tank at one time.

[0004] In the aforementioned utility model patent, the pulverized polyester film waste is fed into the degradation tank through a conveying pipe during the use of the film waste recycling device. When an excessive amount of waste is added to the pulverizing box, the pulverized waste will remain in the discharge port of the pulverizing box and in the conveying pipe, causing blockage of the conveying pipe. As a result, the pulverized waste cannot enter the degradation tank, affecting the normal production operation. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a polyester waste recycling and regeneration device, which solves the problem of clogging of the recycling device by crushed waste, affecting the normal operation of the recycling device.

[0006] According to an embodiment of this utility model, a polyester waste recycling device includes a crushing assembly, a conveying assembly, and a reaction vessel connected in sequence. The crushing assembly includes a crushing box, multiple crushing rollers rotatably disposed within the crushing box, and a first motor driving the crushing rollers to rotate. The conveying assembly includes a conveying pipe, a conveying rod rotatably disposed within the conveying pipe, and a second motor drivingly connected to the conveying rod. The axial direction of the conveying rod is consistent with the axial direction of the conveying pipe, and the conveying rod is provided with helical blades. The two ends of the conveying pipe are respectively provided with a feed inlet and a discharge outlet. The feed inlet is connected to the discharge end of the crushing box, and the discharge outlet is connected to the feed end of the reaction vessel. Rotatable rotating rods are respectively provided in the feed inlet and the discharge outlet. The rotating rods are parallel to the conveying rods and drivingly connected to the conveying rods. Multiple rotating disks are respectively sleeved on the rotating rods, and the rotating disks are spaced apart along the axial direction of the rotating rods. Multiple actuating plates are spaced apart along the circumference of the rotating rods on the rotating disks.

[0007] Furthermore, the crushing box is provided with four rotatable crushing rollers spaced apart, and any two adjacent crushing rollers rotate in opposite directions.

[0008] Furthermore, the output end of the first motor is connected to one of the crushing rollers, and the ends of the crushing rollers are respectively provided with drive gears, and the drive gears on any two adjacent crushing rollers mesh with each other.

[0009] Furthermore, the two crushing rollers located in the middle are at the same height, and the two crushing rollers located on both sides are at the same height but lower than the two crushing rollers located in the middle.

[0010] Furthermore, the crushing box is also provided with a movable mounting frame and the crushing box is provided with a slot for the mounting frame to enter and exit the crushing box. The mounting frame is located between the crushing roller and the feed inlet and is provided with a screen.

[0011] Furthermore, the screen can be raised and lowered on the mounting frame, and the crushing box is equipped with a third motor and the output end of the third motor is equipped with a cam. The cam abuts against the screen and drives the screen to reciprocate in the vertical direction.

[0012] Furthermore, the mounting frame is provided with a vertical guide rod and the screen is provided with a guide hole that cooperates with the guide rod. The guide rod is fitted with a spring, and the spring abuts against the side of the screen away from the cam and drives the screen to move towards the cam.

[0013] Furthermore, a first sprocket is fitted onto the conveying rod, and a second sprocket is fitted onto the rotating rod, with the first sprocket and the second sprocket being connected by a transmission chain.

[0014] Furthermore, the reactor is equipped with a rotatable stirring rod and a fourth motor that is connected to the stirring rod for transmission. The stirring rod is provided with multiple stirring blades spaced apart along its circumference.

[0015] Furthermore, the reactor is provided with multiple feed pipes at intervals, and the feed pipes extend into the reactor and are connected to the reactor.

[0016] Compared with existing technologies, this utility model has the following advantages: By employing a connected crushing assembly, conveying assembly, and reaction vessel to recycle polyester waste, the waste is fed into the crushing box from the inlet and crushed by the crushing rollers. The crushed waste passes through the outlet and inlet of the crushing box into the conveying pipe, and is moved from the inlet to the outlet by the rotating spiral blades driven by the conveying rod. The waste then passes through the outlet and is fed into the reaction vessel from the inlet. EG is then added to the reaction vessel and the temperature is raised to process the waste into alcohol. The solution is that when the conveying rod rotates under the drive of the second motor, the rotating rod connected to the conveying rod rotates synchronously, causing the rotating disk and the agitator plate on the rotating rod to rotate synchronously with the movement of the conveying rod. During the rotation of the agitator plate, the waste in the feed port and discharge port is agitated, preventing the waste from being stuck in the feed port and discharge port, and ensuring that the crushed waste is continuously and stably fed into the reactor. This solves the technical problem of the crushed waste clogging the recovery device and affecting the normal operation of the recovery device, and produces the technical effect of preventing the waste from clogging the conveying pipe and improving the reliability of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a polyester waste recycling and regeneration device according to an embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of a polyester waste recycling and regeneration device according to an embodiment of the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a cross-sectional view of another section of a polyester waste recycling and regeneration device according to an embodiment of the present invention.

[0021] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0022] In the above attached figures: 1. Crushing assembly; 11. Crushing box; 12. Crushing roller; 13. First motor; 14. Drive gear; 15. Third motor; 16. Cam; 2. Conveying assembly; 21. Conveying pipe; 22. Conveying rod; 23. Second motor; 24. Spiral blade; 25. Feed inlet; 26. Discharge port; 27. First sprocket; 3. Reactor; 31. Stirring rod; 32. Fourth motor; 33. Stirring blade; 34. Conveying pipe; 4. Rotating rod; 41. Rotating disk; 42. Actuating plate; 43. Second sprocket; 44. Transmission chain; 5. Mounting frame; 51. Screen; 52. Guide rod; 53. Spring. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 5 As shown in the figure, this utility model embodiment proposes a polyester waste recycling and regeneration device, which is used to crush polyester waste and put it into the reaction vessel 3, so that the waste and ethylene glycol (EG) are alcoholyzed into esters under heating conditions and participate in subsequent polycondensation reactions, so as to process the recycled polyester waste and obtain products.

[0025] Please refer to Figure 1 , Figure 2 and Figure 3The polyester waste recycling device includes a crushing assembly 1, a conveying assembly 2, and a reaction vessel 3 connected in sequence. The crushing assembly 1 includes a crushing box 11, multiple crushing rollers 12 rotatably disposed within the crushing box 11, and a first motor 13 driving the crushing rollers 12 to rotate. Waste is fed into the crushing box 11 from the feed end and falls onto the crushing rollers 12. Driven by the first motor 13, the crushing rollers 12 rotate synchronously and crush the waste, thus pulverizing it. The conveying assembly 2 includes a conveying pipe 21, a conveying assembly 22, and a reaction vessel 3 rotatably disposed within the crushing box 11. The conveying pipe 21 contains a conveying rod 22 and a second motor 23 connected to the conveying rod 22. The axial direction of the conveying rod 22 is consistent with the axial direction of the conveying pipe 21, and the conveying rod 22 is provided with spiral blades 24. The two ends of the conveying pipe 21 are respectively provided with a feed inlet 25 and a discharge outlet 26. The feed inlet 25 is connected to the discharge end of the crushing box 11, and the discharge outlet 26 is connected to the feed end of the reaction vessel 3. The crushed waste material passes through the discharge end of the crushing box 11 and the feed inlet 25 and enters the conveying pipe 21. The conveying rod 22 is located in... When the second motor 23 drives the rotation, the spiral blades 24 rotate synchronously to transport the waste material in the conveying pipe 21 from the feed port 25 to the discharge port 26, so that the waste material falls from the discharge port 26 into the feed end of the reactor 3 and into the reactor 3 for reaction; the feed port 25 and the discharge port 26 are respectively provided with rotatable rotating rods 4, the rotating rods 4 are parallel to the conveying rod 22 and are connected to the conveying rod 22 in a transmission manner, and multiple rotating disks 41 are respectively sleeved on the rotating rods 4 and the rotating disks 41 are along the rotating rods 4. The rotating disk 41 is axially spaced, and multiple actuating plates 42 are spaced around the rotating rod 4. When the conveying rod 22 rotates under the drive of the second motor 23, the rotating rod 4, which is connected to the conveying rod 22, rotates synchronously. When the rotating rod 4 rotates, it drives the rotating disk 41 and the actuating plates 42 on the rotating disk 41 to move, so that the actuating plates 42 actuate the waste in the feed port 25 and the discharge port 26, preventing the waste from accumulating in the feed port 25 and / or the discharge port 26 and causing blockage of the conveying pipe 21.

[0026] Specifically, the operation steps for processing polyester waste using the polyester waste recycling and regeneration device provided in this embodiment are as follows: First, turn on the first motor 13 and the second motor 23 respectively. Then, feed the waste into the crushing box 11 from the feed end. Driven by the first motor 13, the crushing roller 12 rotates and crushes the waste. The crushed waste passes through the discharge end of the crushing box 11 and the feed inlet 25, falling into the conveying pipe 34. When the conveying rod 22 rotates under the drive of the second motor 23, it drives the spiral blades 24 to rotate, causing the waste to move from the feed inlet 25 to the discharge port 26. The waste reaching the discharge port 26 is discharged from the discharge pipe. The feed end of the reactor 3 is inserted into the reactor 3, and the rotating rod 4, which is connected to the conveying rod 22, rotates synchronously when the conveying rod 22 rotates. This causes the rotating disk 41 and the agitator plate 42 to rotate synchronously with the movement of the conveying rod 22. During the rotation of the agitator plate 42, the waste in the feed inlet 25 and discharge outlet 26 is agitated, preventing the waste from accumulating in the feed inlet 25 and / or discharge outlet 26, and ensuring that the crushed waste is continuously and stably fed into the reactor 3. After the waste enters the reactor 3, EG is added to the reactor 3 and the temperature is raised to perform alcoholysis on the waste. The esters obtained from alcoholysis participate in the polycondensation reaction to obtain recycled products. In this embodiment, the esters participating in the polycondensation reaction to obtain products prevent the waste from clogging the feed pipe 34 through the rotation of the agitator plate 42, ensuring stable and reliable operation and guaranteeing the normal operation of polyester waste recycling.

[0027] like Figure 2 and Figure 4 As shown, four rotatable crushing rollers 12 are spaced apart inside the crushing box 11, with any two adjacent crushing rollers 12 rotating in opposite directions. The arrangement of these four crushing rollers 12 within the crushing box 11, and the opposite rotation directions of any two adjacent crushing rollers 12, ensures that waste falling from the crushing box 11 onto the two middle crushing rollers first moves towards the crushing rollers on either side before being squeezed between adjacent crushing rollers 12. This prevents the waste from being crushed by splashing debris from the feed end of the crushing box 11 into the external environment, thus avoiding losses and pollution.

[0028] In detail, the output end of the first motor 13 is connected to one of the crushing rollers 12. Each crushing roller 12 has a drive gear 14 at its end, and the drive gears 14 on any two adjacent crushing rollers 12 mesh with each other. When one of the crushing rollers 12 rotates under the drive of the first motor 13, the power output by the first motor 13 is transmitted to each of the crushing rollers 12 through the meshing drive gears 14. This allows the four crushing rollers 12 to rotate synchronously and keeps the rotation directions of adjacent crushing rollers 12 opposite, ensuring effective crushing of the waste material fed into the crushing box 11.

[0029] like Figure 2 As shown, the two middle crushing rollers 12 are at the same height, while the two side crushing rollers 12 are at the same height but lower than the two middle crushing rollers 12. By setting the four crushing rollers 12 such that the two middle rollers are at a higher height and the two side rollers are at a lower height, the crushing box 11 can hold more waste material to be crushed, thereby reducing the number of times material is fed into the crushing box 11 during polyester waste processing.

[0030] Please combine Figure 2 and Figure 4 The crushing box 11 is also equipped with a movable mounting frame 5, and the crushing box 11 has a slot for the mounting frame 5 to enter and exit the crushing box 11. The mounting frame 5 is located between the crushing roller 12 and the feed inlet 25, and the mounting frame 5 is equipped with a screen 51. A detachable mounting frame 5 is provided in the crushing box 11, and the screen 51 is provided on the mounting frame 5. The screen 51 is used to screen the crushed waste material to prevent waste material with excessively large particle size from entering the reaction vessel 3 and affecting the processing efficiency. The waste material retained on the screen 51 can be collected by pulling the mounting frame 5 out of the slot. After collecting a certain amount of waste material, the waste material is poured back into the crushing box 11 for crushing to ensure that the subsequent processing steps are carried out efficiently.

[0031] Please refer to Figure 4 and Figure 5The screen 51 is vertically and flexibly mounted on the mounting frame 5. A third motor 15 is mounted on the crushing box 11, and a cam 16 is mounted on the output end of the third motor 15. The cam 16 abuts against the screen 51 and drives the screen 51 to reciprocate vertically. By configuring the screen 51 to reciprocate vertically on the mounting frame 5, and by having the cam 16 rotate via the third motor 15 to drive the screen 51 to vibrate vertically, the screen 51 is prevented from accumulating on the screen 51 or from clogging the mesh. This ensures the screen 51 remains unobstructed and that the crushed waste continuously and stably falls into the conveying pipe 21.

[0032] In this embodiment, the mounting frame 5 is provided with a vertical guide rod 52, and the screen 51 is provided with a guide hole that cooperates with the guide rod 52. A spring 53 is sleeved on the guide rod 52. The spring 53 abuts against the side of the screen 51 away from the cam 16 and drives the screen 51 to move towards the cam 16. The guide rod 52 on the mounting frame 5 is used to cooperate with the guide hole on the screen 51 to limit the movement direction of the screen 51, prevent the screen 51 from deviating from the preset direction when vibrating, and improve the stability of the cooperation between the screen 51 and the mounting frame 5, preventing the screen 51 from detaching from the mounting frame 5. At the same time, the spring 53 sleeved on the guide rod 52 abuts against the screen 51. The elastic force provided by the spring 53 keeps the screen 51 abutting against the cam 16, which helps to further improve the operational stability of the polyester waste recycling device.

[0033] like Figure 1 and Figure 3 As shown, a first sprocket 27 is fitted onto the conveying rod 22, and a second sprocket 43 is fitted onto the rotating rod 4. The first sprocket 27 and the second sprocket 43 are connected by a transmission chain 44. The conveying rod 22 and the rotating rod 4 are connected by the transmission chain 44 and the first sprocket 27 and the second sprocket 43. When the conveying rod 22 rotates under the drive of the second motor 23, the transmission chain 44 transmits the power output by the second motor 23 to the rotating rod 4, so that the rotating rod 4 rotates synchronously with the conveying rod 22 and drives the actuating plate 42 to move, ensuring that the feed inlet 25 and the discharge outlet 26 remain unobstructed while the spiral blades 24 transport waste materials.

[0034] like Figure 2As shown, the reaction vessel 3 is equipped with a rotatable stirring rod 31 and a fourth motor 32 that is pulsatorically connected to the stirring rod 31. Multiple stirring blades 33 are spaced apart along the circumference of the stirring rod 31. The stirring rod 31 is mounted on the reaction vessel 3 and driven to rotate by the fourth motor 32. When the stirring rod 31 rotates, the stirring blades 33 stir the materials inside the reaction vessel 3, ensuring that the materials inside the reaction vessel 3 react fully.

[0035] Specifically, the reactor 3 is provided with multiple conveying pipes 34 at intervals, each of which extends into and communicates with the reactor 3. The conveying pipes 34 are used to input EG into the reactor 3 or to discharge material from the reactor 3, facilitating the addition of materials to the reactor 3 or the transport of the product to the next processing station for further processing. This also facilitates the integration of the polyester waste recycling and regeneration device with other equipment.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A polyester waste recycling and regeneration device, characterized in that: The device comprises a crushing assembly, a conveying assembly, and a reaction vessel connected in sequence. The crushing assembly includes a crushing box, multiple crushing rollers rotatably disposed within the crushing box, and a first motor driving the crushing rollers to rotate. The conveying assembly includes a conveying pipe, a conveying rod rotatably disposed within the conveying pipe, and a second motor drivingly connected to the conveying rod. The axial direction of the conveying rod is consistent with the axial direction of the conveying pipe, and the conveying rod is provided with helical blades. The two ends of the conveying pipe are respectively provided with a feed inlet and a discharge outlet. The feed inlet is connected to the discharge end of the crushing box, and the discharge outlet is connected to the feed end of the reaction vessel. Rotatable rotating rods are respectively provided in the feed inlet and the discharge outlet. The rotating rods are parallel to the conveying rods and drivingly connected to the conveying rods. Multiple rotating disks are respectively sleeved on the rotating rods and the rotating disks are spaced apart along the axial direction of the rotating rods. Multiple actuating plates are spaced apart along the circumference of the rotating rods on the rotating disks.

2. The polyester waste recycling and regeneration device as described in claim 1, characterized in that: The crushing box is equipped with four rotatable crushing rollers spaced apart, and any two adjacent crushing rollers rotate in opposite directions.

3. The polyester waste recycling and regeneration device as described in claim 2, characterized in that: The output end of the first motor is connected to one of the crushing rollers, and the ends of the crushing rollers are respectively provided with drive gears, and the drive gears on any two adjacent crushing rollers mesh with each other.

4. The polyester waste recycling and regeneration device as described in claim 2, characterized in that: The two crushing rollers in the middle are at the same height, and the two crushing rollers on both sides are at the same height but lower than the two crushing rollers in the middle.

5. The polyester waste recycling and regeneration device as described in claim 1, characterized in that: The crushing box is also provided with a movable mounting frame and a slot for the mounting frame to enter and exit the crushing box. The mounting frame is located between the crushing roller and the feed inlet and is provided with a screen.

6. The polyester waste recycling and regeneration device as described in claim 5, characterized in that: The screen can be raised and lowered on the mounting frame. The crushing box is equipped with a third motor and the output end of the third motor is equipped with a cam. The cam abuts against the screen and drives the screen to move back and forth in the vertical direction.

7. The polyester waste recycling and regeneration device as described in claim 6, characterized in that: The mounting frame is provided with a vertical guide rod and the screen is provided with a guide hole that cooperates with the guide rod. The guide rod is fitted with a spring, and the spring abuts against the side of the screen away from the cam and drives the screen to move towards the cam.

8. The polyester waste recycling and regeneration device as described in claim 1, characterized in that: The conveying rod is fitted with a first sprocket, and the rotating rod is fitted with a second sprocket, with the first sprocket and the second sprocket being connected by a transmission chain.

9. A polyester waste recycling and regeneration device as described in claim 1, characterized in that: The reactor is equipped with a rotatable stirring rod and a fourth motor that is connected to the stirring rod for transmission. The stirring rod is provided with multiple stirring blades spaced apart along its circumference.

10. A polyester waste recycling and regeneration device as described in claim 1, characterized in that: The reactor is provided with multiple feed pipes spaced apart, and the feed pipes extend into the reactor and are connected to the reactor.

Images