Production and preparation device for recycled polyester chips

Abstract

The invention relates to the technical field of recycled polyester chips, in particular to a recycled polyester chip production and preparation device which comprises a cooling pond, and a conveying belt, a feeding roller and a chip chamber are arranged at the right end of the cooling pond; a rotating roller is arranged above the left end of the cooling pond, a plurality of guide plates rotationally sleeve the rotating roller, and the left ends of the guide plates are connected with a water outlet pipe; a plurality of guide grooves are formed in the bottom surface of the fixing plate, and the guide plates can rotate in the guide grooves; a gap through which the cast strip on the flow guide plate passes is reserved between the blanking roller and the bottom wall in the cooling pond; the cutter is connected with the right end of the flow guide plate; the bottom face of the auxiliary belt is matched with the top face of the conveying belt, and the casting strip is conveyed rightwards. According to the continuous casting strip cutting device, the casting strips can be continuously connected again, the casting strips which are not stretched are cut off as waste materials, the uniformity of products is improved, the multiple casting strips are separated, and the situation that the multiple casting strips are mutually entangled is avoided as much as possible.

Description

Technical Field

[0001] The invention relates to the technical field of recycled polyester chips, in particular to a production and preparation device for recycled polyester chips. Background Art

[0002] Polyester (PET) has excellent physical and chemical properties. By recycling polyester, we can not only reduce dependence on crude oil and save oil resources, but also the carbon dioxide emissions generated by recycled polyester are lower than those produced by polyester, which helps to reduce greenhouse gas emissions, fight climate change, and promote the circular economy.

[0003] In the polyester recycling process, the slicing process plays a vital role. In this process, the recycled polyester is sent to a slicer or granulator after reaction treatment and cut into granular products with specific lengths and shapes. In order to ensure that the polyester slices are easy to process in the subsequent recycling process, there are certain requirements for the uniformity of the polyester slices, and the size of the slices must remain consistent and uniform.

[0004] Reference is made to a Chinese patent application document with publication number CN118418324A, publication date August 2, 2024, and titled A Plastic Granulator, comprising a guide plate and a pelletizing chamber, wherein two feed rollers are arranged in the pelletizing chamber. When the device is in operation, the melt is extruded by a melt pump and fed into a casting strip head, and is extruded from the casting strip head in strands and dispersed to form a cast strip. The cast strip is first heat-exchanged by overflow water and flows downward along the guide plate. During the flow, it is further cooled by spraying water. The ends of the cast strip are pulled by two feed rollers, so that the cast strip extruded from the casting strip head is uniform in thickness. There are moving knives and fixed knives in the pelletizing chamber for pelletizing.

[0005] With regard to the above-mentioned related technologies, when the cast strip is not cooled, it is necessary to pull the cast strip so that it is stretched and deformed into a certain thickness. However, due to the influence of temperature, material properties and slicing device, the cast strip may break during the movement, especially the cast strip that is not completely cooled. The broken cast strip loses traction, which will cause the cast strip extruded at the head of the cast strip to be uneven in thickness. In addition, the position of the cast strip may shift during the movement, causing multiple cast strips to be entangled with each other, all of which affect the uniformity of the polyester slices. Therefore, in order to ensure the uniformity of the polyester slices, the deformed cast strip after losing traction needs to be removed as waste, and the end of the cast strip needs to be re-entered between the two feed rollers for traction. Summary of the invention

[0006] In view of this, the present invention provides a production and preparation device for recycled polyester chips, aiming to solve the technical problem in the prior art that waste needs to be removed and the cast strip needs to be re-pulled after the cast strip is broken.

[0007] In order to solve the above technical problems, the present invention provides a production and preparation device for recycled polyester chips, which adopts the following technical scheme: a production and preparation device for recycled polyester chips, comprising a cooling pool located below an extrusion casting head, a conveyor belt is provided at the right end of the cooling pool, a feed roller is provided above the right end of the conveyor belt, and a slicing chamber is provided on the right side of the conveyor belt; A rotating roller is provided above the left end of the cooling pool, and a plurality of guide plates arranged along the axial direction of the rotating roller are rotatably sleeved on the rotating roller. A rotating member for controlling the guide plate to rotate around the central axis of the rotating roller is provided on the cooling pool. A water outlet pipe is connected to the left end of the guide plate, and a concave guide groove 1 is provided on the top surface of the guide plate; A fixing plate is connected to the cooling pool, and a plurality of guide grooves arranged along the axial direction of the rotating roller are provided on the bottom surface of the fixing plate. The guide grooves extend vertically and can allow the guide plate to rotate; A feeding roller is rotatably connected inside the cooling pool, and a gap is left between the feeding roller and the bottom wall inside the cooling pool for the cast strip on the guide plate to pass through; A cutter is connected to the cooling pool, and the cutter is connected to the right end of the guide plate; An auxiliary belt is arranged above the cooling pool, and the bottom surface of the auxiliary belt cooperates with the top surface of the conveyor belt to convey the cast strip to the right.

[0008] By adopting the above technical solution, when the device is running, the guide plate rotates downward, the front half of the cast strip moves along the guide plate, the right end of the cast strip is located on the conveyor belt, the cast strip located on the conveyor belt has been cooled, and the part of the cast strip close to the conveyor belt is suspended in the guide groove.

[0009] When the cast strip suddenly breaks, part of the cast strip on the conveyor belt continues to be conveyed and sliced ​​along the conveyor belt, and the other part of the cast strip falls down onto the guide plate. The cast strip head continues to extrude, and the cast strip moves downward until the right end of the cast strip enters between the unloading roller and the cooling pool. The unloading roller cooperates with the cooling pool to continuously provide traction for the cast strip, so that the cast strip extruded at the head of the cast strip is stretched to a certain thickness. The guide plate rotates upward, and the cutter cooperates with the guide plate to cut the cast strip, wherein the unstretched cast strip waste is cut off and falls into the cooling pool. The cast strip on the guide plate is the part stretched by the unloading roller. The guide plate continues to move upward, and the end of the stretched cast strip is sent between the conveyor belt and the auxiliary belt. The auxiliary belt cooperates with the conveyor belt to pull and convey the cast strip. Solve the problem of removing waste and re-pulling after the cast strip breaks. The device can perform continuous operation and reduce the workload of workers.

[0010] Fixed plates and guide grooves are set to separate multiple casting strips to avoid the entanglement of multiple casting strips as much as possible. The problem of entanglement between multiple casting strips is solved, and the guide plate is matched to ensure that the guide plate can receive the corresponding casting strips for easy re-traction.

[0011] Optionally, the left end of the guide plate is connected to two partitions arranged in the front-to-back direction, and the two partitions gradually face away from each other from bottom to top.

[0012] By adopting the above technical solution, two partitions are used to guide the cast strips extruded from the cast strip head to enter the guide groove. The partitions are inclined to help separate multiple cast strips and guide the cast strips.

[0013] Optionally, the top wall of the guide groove is provided with a guide groove 2 protruding upward.

[0014] By adopting the above technical solution, the guide groove 2 cooperates with the guide groove 1 to limit the movement direction of the cast strip in the guide groove 1, thereby reducing the occurrence of cast strip deviation.

[0015] Optionally, the auxiliary belt is inclined downward from left to right.

[0016] By adopting the above technical solution, the auxiliary belt is tilted to facilitate the end of the cast belt to enter between the bottom of the auxiliary belt and the top of the conveyor belt, which is beneficial to avoid structural conflicts between the fixed plate, guide plate and auxiliary belt as much as possible.

[0017] Optionally, a pressure rod for guiding the lower belt of the auxiliary belt is rotatably connected in the cooling pool.

[0018] Optionally, the circumferential side wall of the unloading roller is fixedly connected with an anti-skid pattern extending along the axial direction of the unloading roller, and a plurality of anti-skid patterns are arranged along the circumference of the unloading tube.

[0019] By adopting the above technical solution, the unloading roller is helpful to provide traction force to the cast strip, so that the cast strip moves to the right.

[0020] Optionally, a drying element is provided above the conveyor belt.

[0021] By adopting the above technical solution, the cast strip is dried and then sliced. There is no need to dry it after slicing, and it is relatively simple to dry it before slicing. If it is dried after slicing, it is necessary to additionally set up a stirring device and a drying device to dry the slices, which is relatively complicated.

[0022] Optionally, the drying element includes a drying chamber, a blower and a heating pipe, and the air blown out by the blower is heated by the heating pipe and then blown above the conveyor belt.

[0023] In summary, the present invention includes the following beneficial technical effects: The cutter cooperates with the guide plate to cut the cast strip, wherein the unstretched cast strip waste is cut off and falls into the cooling pool. The cast strip on the guide plate is the part stretched by the unloading roller. The guide plate continues to move upward to feed the end of the stretched cast strip into between the conveyor belt and the auxiliary belt. The auxiliary belt cooperates with the conveyor belt to pull and transport the cast strip, solving the problem of removing waste and re-pulling after the cast strip breaks. The device can perform continuous operation and reduce the workload of workers; fixed plates and guide grooves are set to separate multiple cast strips to avoid the entanglement of multiple cast strips as much as possible, solve the problem of entanglement between multiple cast strips, and cooperate with the guide plate to ensure that the guide plate can take over the corresponding cast strips for easy re-pulling; 2. The two partitions are used to guide the cast strips extruded from the cast strip head so that they enter the guide groove 1. The partitions are inclined to help separate multiple cast strips and guide the cast strips.

[0024] 3. The auxiliary belt is tilted to facilitate the end of the cast belt to enter between the auxiliary belt and the conveyor belt, which is beneficial to avoid structural conflicts between the fixed plate, guide plate and auxiliary belt as much as possible.

[0025] 4. Anti-slip grooves are set to help the unloading roller provide traction to the cast strip, so that the cast strip moves to the right.

[0026] 5. The cast strip is dried before slicing. There is no need to dry it after slicing, and it is simpler to dry it before slicing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is an axonometric schematic diagram of a cooling pool structure in an embodiment of the present invention; Figure 3 It is a front view schematic diagram of the cooling pool structure in an embodiment of the present invention; Figure 4 is a cross-sectional schematic diagram of a fixing block and a guide plate in an embodiment of the present invention; Figure 5 for Figure 4 A partial enlarged schematic diagram of part A; Figure 6 for Figure 4 A partial enlarged schematic diagram of part B; Figure 7 Schematic diagram of the structure of the feed roller and the cutter in the embodiment of the present invention; Figure 8 for Figure 7 A partial enlarged schematic diagram of part C in the middle.

[0028] Explanation of the reference numerals: 1. casting strip head; 11. extruder; 2. cooling tank; 3. slicing assembly; 31. conveyor belt; 32. feed roller; 33. slicing chamber; 4. auxiliary assembly; 41. rotating roller; 42. guide plate; 421. guide trough 1; 422. partition; 43. rotating part; 44. water outlet pipe; 45. fixed plate; 451. guide trough; 452. guide trough 2; 46. unloading roller; 47. cutter; 48. auxiliary belt; 5. drying part; 51. drying chamber; 52. hair dryer. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0030] The following is combined with Figure 1 -Attached Figure 8 The present invention is described in further detail.

[0031] The embodiment of the present invention discloses a production and preparation device for recycled polyester chips. Figures 1 to 8 A production and preparation device for recycled polyester chips includes an extruder 11 equipped with a cast strip head 1, a cooling pool 2, a slicing component 3, an auxiliary component 4 and a drying component 5. The recycled polyester material is added to the extruder 11, and the extruder 11 extrude the recycled polyester material in a molten state from the cast strip head 1 to extrude a plurality of cast strips to be cooled. When the device is just started, it is necessary to guide the end of the cast strip so that the right end of the cast strip is pulled and the cast strip is stretched into a long strip. During the stretching process, the cooling pool 2 cools the cast strip, and the slicing component 3 slices the cooled cast strip into granules. The auxiliary component 4 is arranged at the cooling pool 2. The auxiliary component 4 is used to remove the unstretched thicker cast strip as waste when the cast strip breaks accidentally, and at the same time, it can provide traction for the cast strip again, and send the stretched cast strip end to the slicing component 3, so that the device can run continuously and improve the consistency of the product. The drying component 5 is used to dry the multiple cast strips on the conveyor belt 31.

[0032] Reference Figure 1 and Figure 2 The cooling pool 2 is filled with liquid, such as water, for cooling the cast strip.

[0033] Reference Figure 2 and Figure 3 The slicing assembly 3 includes a conveyor belt 31, a feed roller 32 and a slicing chamber 33.

[0034] The conveyor belt 31 is arranged at the right end of the cooling pool 2, and the feed roller 32 is arranged above the right end of the conveyor belt 31. The feed roller 32 corresponds to the belt drive roller on the right side of the conveyor belt 31. The feed roller 32 cooperates with the conveyor belt 31 to provide traction to the cast strip and move the cast strip to the right. The slicing chamber 33 is located on the right side of the conveyor belt, and the cast strip enters the slicing chamber 33 for slicing.

[0035] Reference Figure 2 Furthermore, a gear 1 is provided on the belt drive roller on the right side of the conveyor belt 31, and a gear 2 is provided on the feed roller 32. The gear 1 is meshed with the gear 2, so that the feed roller 32 rotates actively, which is beneficial to the stability of the lifting device. The gear 1 and the gear 2 are set, and when the conveyor belt 31 is driven to transmit through an external rotation source, such as a rotating motor, the feed roller 32 can also be driven to rotate, which is convenient for use.

[0036] Reference Figure 5 , Figure 6 and Figure 7 The auxiliary component 4 includes a rotating roller 41, a guide plate 42, a rotating member 43, a water outlet pipe 44, a fixed plate 45, a feed roller 46, a cutter 47 and an auxiliary belt 48.

[0037] The rotating roller 41 is arranged above the left end of the cooling pool 2, and the rotating roller 41 is fixedly connected to the cooling pool 2, and the axial direction of the rotating roller 41 extends in the front-to-back direction. A plurality of guide plates 42 are provided, and the plurality of guide plates 42 are arranged in sequence along the axial direction of the rotating roller 41. The left end of the guide plate 42 is sleeved on the rotating roller 41, and the guide plate 42 rotates around the central axis of the rotating roller 41. The guide plate 42 is tilted downward from left to right. The rotating member 43 is arranged between the cooling pool 2 and the guide plate 42, and is used to control the rotation of the guide plate 42. The water outlet pipe 44 is connected to the left end of the guide plate 42, and a concave guide groove 421 is provided on the top surface of the guide plate 42.

[0038] The cast strip falls onto the guide plate 42, and water is discharged from the water outlet pipe 44, and the water flow drives the cast strip to move rightward, while cooling the cast strip. The guide groove 421 is provided to help limit the cast strip and reduce the occurrence of cast strip deviation.

[0039] Reference Figure 5 Specifically, the rotating member 43 includes a plurality of rotating motors, and the plurality of rotating motors correspond one to one with the plurality of guide plates 42. One end of the rotating motor is hinged to the cooling pool 2, and the output end of the rotating motor is hinged to the bottom surface of the left end of the guide plate 42. When the rotating motor is started, the overall length of the rotating motor and the output end is changed, thereby driving the guide plate 42 to rotate.

[0040] Reference Figure 5Furthermore, two baffles 422 are connected to the left end of the guide plate 42. The two baffles 422 are arranged in the front-to-back direction, and the two baffles 422 are inclined. The two baffles 422 gradually move away from each other from bottom to top, that is, the distance between the two baffles 422 gradually increases from bottom to top. This is conducive to guiding the cast strip extruded from the cast strip head 1 so that it falls on the guide plate 42.

[0041] The fixed plate 45 is fixedly connected to the cooling pool 2. The fixed plate 45 is located above the guide plate 42. A plurality of guide grooves 451 are provided on the bottom surface of the fixed plate 45. The plurality of guide grooves 451 are arranged in sequence in the axial direction of the rotating roller 41. The guide grooves 451 are provided for the guide plate 42 to rotate. The fixed plate 45 and the guide grooves 451 are provided to separate the plurality of cast strips and avoid the plurality of cast strips from being entangled with each other as much as possible. The problem of the plurality of cast strips being entangled with each other is solved, and the guide plate 42 is matched to ensure that the guide plate 42 can receive the corresponding cast strips for easy re-traction.

[0042] Reference Figure 6 Furthermore, the top wall of the guide groove 451 is provided with a guide groove 2 452 protruding upward. The guide groove 2 452 cooperates with the guide groove 1 421 to limit the movement direction of the cast strip in the guide groove 1 421, further reducing the occurrence of cast strip deviation.

[0043] Reference Figure 7 and Figure 8 The unloading roller 46 is rotatably connected to the inside of the cooling pool 2, and is driven to rotate by an external rotation source, such as a rotating motor. A gap is left between the unloading roller 46 and the bottom wall of the cooling pool 2 for the cast strip on the guide plate 42 to pass through. When the cast strip breaks accidentally, the guide plate 42 receives the cast strip, and the cast strip moves along the guide plate 42 until the end of the cast strip enters between the unloading roller 46 and the cooling pool 2, and the unloading roller 46 provides traction for the cast strip again.

[0044] Reference Figure 8 Furthermore, the circumferential side wall of the unloading roller 46 is fixedly connected with an anti-skid pattern extending along the axial direction of the unloading roller 46, and a plurality of anti-skid patterns are arranged circumferentially along the unloading tube. Increasing the friction between the unloading roller 46 and the cast strip is conducive to the unloading roller 46 providing traction to the cast strip, so that the cast strip moves to the right.

[0045] Reference Figure 7 and Figure 8 The cutter 47 is fixedly connected to the inner wall of the cooling pool 2, and the cutter 47 is connected to the right end of the guide plate 42. When the guide plate 42 rotates upward, the cutter 47 cooperates with the guide plate 42 to cut off the cast strip, completing the removal and unloading of waste materials.

[0046] Reference Figure 7The auxiliary belt 48 is arranged at the right end of the cooling pool 2, and the auxiliary belt 48 is arranged above the conveyor belt 31. The bottom surface of the auxiliary belt 48 cooperates with the top surface of the conveyor belt 31 to convey the cast strip to the right. When the guide plate 42 rotates upward and sends the right end of the cast strip to the conveyor belt 31, the cast strip may fall because the length of the cast strip on the conveyor belt 31 is short at this time. The auxiliary belt 48 is arranged, and the auxiliary belt 48 can also provide traction for the cast strip and make the cast strip move to the right, completing the continuation of the cast strip.

[0047] Reference Figure 7 Furthermore, the auxiliary belt 48 is tilted downward from left to right, and a pressure rod for guiding the lower belt of the auxiliary belt 48 is rotatably connected in the cooling pool 2. The auxiliary belt 48 is tilted to facilitate the end of the cast belt to enter between the auxiliary belt 48 and the conveyor belt, which is conducive to avoiding structural conflicts between the fixed plate 45, the guide plate 42 and the auxiliary belt 48 as much as possible.

[0048] Reference Figure 2 Furthermore, a drying element 5 is provided above the conveyor belt 31 .

[0049] Specifically, the drying unit 5 includes a drying chamber 51 , a blower 52 and a heating pipe. The wind blown out by the blower 52 is heated by the heating pipe and then blown above the conveyor belt 31 .

[0050] The cast strip is dried and then sliced. There is no need to dry it after slicing, and it is relatively simple to dry it before slicing. If it is dried after slicing, it is necessary to additionally set up a stirring device and a drying device to dry the slices, which is relatively complicated.

[0051] The implementation principle of a production and preparation device for recycled polyester chips according to an embodiment of the present invention is as follows: The extruder 11 is running, and the strip casting head 1 continuously extrude a plurality of strips.

[0052] The cast strip falls to the left end of the guide plate 42, and the partition 422 at the left end of the guide plate 42 guides the falling direction of the cast strip. Multiple cast strips correspond to multiple guide plates 42 one by one. The water outlet pipe 44 continuously discharges water to cool the cast strip on the guide plate 42. When the device is initially operated, the cast strip needs to be guided between the conveyor belt 31 and the auxiliary belt 48, and further guided between the feed roller 32 and the conveyor belt 31, and the slicing chamber 33 slices the cast strip. After the guidance is completed, the guide plate 42 rotates downward, at which time the left part of the cast strip is located on the guide plate 42, the right part of the cast strip is located on the conveyor belt 31, and the middle part of the cast strip is suspended in the guide groove 451. The liquid in the cooling pool 2 soaks the cast strip and cools the cast strip.

[0053] During the operation of the device, one or more cast strips may break unexpectedly. Take one break as an example. When the cast strip is broken unexpectedly, the cast strip that has been cooled is located on the conveyor belt 31, and the conveyor belt 31 continues to transport and slice it.

[0054] For the uncooled part of the cast strip, the cast strip falls down onto the guide plate 42. As the cast strip is continuously extruded and the water flow at the outlet pipe 44 flushes, the cast strip moves downward until the right end of the cast strip enters between the unloading roller 46 and the cooling pool 2. The unloading roller 46 rotates and provides traction for the cast strip, so that the cast strip extruded at the cast strip head 1 will be pulled and stretched into a long strip during the subsequent movement. The corresponding rotating member 43 controls the guide plate 42, and the guide plate 42 rotates upward until the cutter 47 cooperates with the guide plate 42 to cut the cast strip, and the unstretched thicker cast strip on the cast strip is removed as waste. The guide plate 42 continues to move upward and sends the stretched thinner end of the cast strip between the conveyor belt 31 and the auxiliary belt 48 to complete the removal of the cast strip waste and the continuation of the cast strip. It is beneficial to improve the consistency of the sliced ​​product and reduce the difficulty and workload of subsequent screening.

[0055] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A recycled polyester chip production and preparation device, comprising a cooling pool (2) located below an extrusion casting head (1), a conveyor belt (31) being provided at the right end of the cooling pool (2), a feed roller (32) being provided above the right end of the conveyor belt (31), and a slicing chamber (33) being provided on the right side of the conveyor belt (31), characterized in that: A rotating roller (41) is provided above the left end of the cooling pool (2); a plurality of guide plates (42) arranged along the axial direction of the rotating roller (41) are rotatably sleeved on the rotating roller (41); a rotating member (43) for controlling the guide plate (42) to rotate around the central axis of the rotating roller (41) is provided on the cooling pool (2); a water outlet pipe (44) is connected to the left end of the guide plate (42); and a concave guide groove (421) is provided on the top surface of the guide plate (42); A fixing plate (45) is connected to the cooling pool (2), and a plurality of guide grooves (451) arranged along the axial direction of the rotating roller (41) are formed on the bottom surface of the fixing plate (45), wherein the guide grooves (451) extend vertically and can allow the guide plate (42) to rotate; A feed roller (46) is rotatably connected inside the cooling pool (2), and a gap is left between the feed roller (46) and the bottom wall inside the cooling pool (2) for the cast strip on the guide plate (42) to pass through; A cutter (47) is connected to the cooling pool (2), and the cutter (47) is connected to the right end of the guide plate (42); An auxiliary belt (48) is provided above the cooling pool (2). The bottom surface of the auxiliary belt (48) cooperates with the top surface of the conveyor belt (31) to convey the cast strip to the right.

2. The device for producing recycled polyester chips according to claim 1, characterized in that: The left end of the guide plate (42) is connected to two partitions (422) arranged in the front-to-back direction, and the two partitions (422) gradually face away from each other from bottom to top.

3. The device for producing recycled polyester chips according to claim 1, characterized in that: The top wall of the guide groove (451) is provided with a second guide groove (452) protruding upward.

4. The device for producing recycled polyester chips according to claim 1, characterized in that: The auxiliary belt (48) is inclined downward from left to right.

5. The device for producing recycled polyester chips according to claim 4, characterized in that: A pressure rod for guiding the lower belt of the auxiliary belt (48) is rotatably connected in the cooling pool (2).

6. The device for producing recycled polyester chips according to claim 1, characterized in that: The circumferential side wall of the material discharge roller (46) is fixedly connected with an anti-skid pattern extending along the axial direction of the material discharge roller (46), and a plurality of anti-skid patterns are arranged along the circumference of the material discharge tube.

7. The device for producing recycled polyester chips according to claim 1, characterized in that: A drying element (5) is provided above the conveyor belt (31).

8. The device for producing recycled polyester chips according to claim 7, characterized in that: The drying element (5) comprises a drying chamber (51), a blower (52) and a heating pipe, wherein the air blown out by the blower (52) is heated by the heating pipe and then blown toward the top of the conveyor belt (31).

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