A waste textile recycling system and process

Abstract

This invention discloses a waste textile recycling system and process, comprising an automatic sorting unit, a cutting unit, a metal sorting unit, a crushing unit, a heavy-weight sorting unit, and a pelletizing unit connected in sequence. Waste gas generated during the recycling process is centrally treated by a dust removal device. The recycled waste textiles are automatically sorted to obtain waste textiles containing polyester fibers, which are then cut, sorted by metal, crushed, sorted by heavy weight, and pelletized to finally obtain polyester granules of the required specifications. This invention uses a physical method to systematically recycle and reprocess waste textiles, thereby obtaining recycled polyester granules. The entire recycling process involves no secondary environmental damage and no harmful substance emissions. It not only alleviates the current resource shortage in the textile industry but also reduces the pollution caused by waste textiles, resulting in significant economic and social benefits.

Description

Technical Field

[0001] This invention belongs to the field of waste textile recycling and reprocessing technology, and particularly relates to a waste textile resource recycling and processing system and process. Background Technology

[0002] Resource scarcity and environmental pollution are common problems facing the world today. As people's living standards and consumption levels improve, the life cycle of textiles is greatly shortened, the demand for textile fibers is growing rapidly, and the amount of waste textiles generated is also increasing dramatically.

[0003] Statistics show that my country generates nearly 30 million tons of textile waste annually, of which about 70% is made from synthetic fibers. Because my country's waste sorting system is still in its early stages of development and its recycling system needs further improvement, these waste textiles are rarely recycled and are instead directly discarded, buried, or incinerated. Since synthetic fibers are difficult to degrade in air or biodegrade, this not only causes serious environmental pollution but also results in a huge waste of resources.

[0004] Therefore, it is imperative to improve the resource utilization rate of waste textiles in my country to effectively supplement the raw materials of my country's textile industry and alleviate resource and environmental pressures. Currently, recycling waste textiles and obtaining high-performance raw materials through sorting, recycling, and reprocessing is an effective approach. However, existing technologies are mainly designed for recycling and reusing waste PET bottle flakes and are not suitable for waste textiles. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a waste textile resource recycling system and process for recycling waste textiles.

[0006] This invention is implemented as follows: a waste textile resource recycling and processing system includes:

[0007] An automatic sorting unit is used to sort recycled waste textiles to obtain waste textiles containing polyester fibers.

[0008] The slitting unit is connected to the automatic sorting unit via a conveyor belt and is used to cut the waste textiles containing polyester fibers conveyed by the automatic sorting unit into sheet materials.

[0009] A metal sorting unit, connected to the slitting unit via a conveyor belt, is used to remove metal from the sheet material conveyed by the slitting unit.

[0010] The crushing unit is connected to the metal sorting unit via a conveyor belt and is used to crush the material sorted by the metal sorting unit.

[0011] The heavy object sorting unit is matched and sealed with the crushing unit, and is used to air classify the material crushed by the crushing unit to obtain polyester material free of impurities;

[0012] The pelletizing unit is matched and sealed with the heavy object sorting unit. It is used to pelletize the material sorted by the heavy object sorting unit and cut it to obtain polyester particles of the required specifications. The crushing unit, the heavy object sorting unit and the pelletizing unit are connected in a closed manner by a pneumatic conveying device.

[0013] Furthermore, a waste textile resource recycling and processing system also includes a dust removal device, which is matched and sealed with the heavy object sorting unit and the granulation unit respectively, and is used to centrally treat the waste gas generated in the heavy object sorting unit and the granulation unit.

[0014] Furthermore, the automatic sorting unit includes: a rotary feeder for orderly separating recycled waste textiles; and a waste textile material sorting machine connected to the rotary feeder via a conveyor belt for material transfer. The waste textile material sorting machine is used to sort out waste textiles containing polyester fibers and transport them to the slitting unit via the conveyor belt, while waste textiles without polyester fibers are sent into a collection bag via the conveyor belt for collection.

[0015] Furthermore, the slitting unit includes a waste textile slitting machine, which is connected to the automatic sorting unit and the metal sorting unit via a conveyor belt. The waste textile slitting machine is used to cut waste textiles containing polyester fibers horizontally and vertically to obtain sheet materials of 20-100mm.

[0016] Furthermore, the number of waste textile special slitting machines is at least two, and the two waste textile special slitting machines are connected by a conveyor belt to realize horizontal cutting and vertical cutting respectively.

[0017] Furthermore, the metal sorting unit includes a metal detection conveyor, an iron separator, an eddy current separator, and a stainless steel separator connected in sequence by a conveyor belt. The metal-containing material sorted by the metal detection conveyor is sequentially passed through the iron separator, the eddy current separator, and the stainless steel separator to separate iron, non-ferrous metals, and stainless steel, respectively, and the sorted metals are transported to corresponding collection bags. The metal detection conveyor is connected to the crushing unit via a conveyor belt. The stainless steel separator is connected to the crushing unit via a conveyor belt. The metal-free material sorted by the metal detection conveyor and the stainless steel separator is transported to the crushing unit via a conveyor belt.

[0018] Furthermore, the crushing unit includes a waste textile crusher, which is used to crush the metal-sorted material into fragments smaller than or equal to 20mm.

[0019] Furthermore, the heavy material sorting unit includes an air separation device, which is connected to the crushing unit and the granulation unit. The crushed material is conveyed to the air separation device by a pneumatic conveying device to separate the heavy material and polyester material according to density and convey them to the accumulation bag and the granulation unit respectively.

[0020] Furthermore, the granulation unit includes a material transition chamber, a polyester-specific granulation device, a polyester-specific cutter, and a receiving device connected in sequence. The material transition chamber is sealed to the air classifier via a conveying pipe and is used to store and discharge materials. The polyester-specific granulation device is sealed to the material transition chamber via a conveying pipe and is used to granulate the materials. The polyester-specific cutter is sealed to the polyester-specific granulation device via a conveying pipe and is used to cut the granulated materials to obtain polyester granules. The receiving device is sealed to the polyester-specific cutter via a conveying pipe and is used to receive qualified polyester granules for collection and bagging, and to separate unqualified fine particles and return them to the polyester-specific granulation device for granulation.

[0021] Further, the pneumatic conveying device includes a first positive pressure fan, a second positive pressure fan, a third positive pressure fan, and a negative pressure fan; the first positive pressure fan is located between the heavy object sorting unit and the crushing unit, and is sealed to both the heavy object sorting unit and the crushing unit via conveying pipes; the second positive pressure fan is located between the material transition chamber and the air classifier, and is sealed to both the material transition chamber and the air classifier via conveying pipes; the third positive pressure fan is located between the polyester-specific granulation device and the material transition chamber, and is sealed to both the polyester-specific granulation device and the material transition chamber via conveying pipes; the negative pressure fan is located at the end of the receiving device, and is connected to the receiving device via a conveying pipe, for placing the polyester-specific cutter and the receiving device in a negative pressure state, so as to draw the granulated material into the polyester-specific cutter and the receiving device respectively.

[0022] Furthermore, the material transition chamber includes a sealed chamber formed by a stirring device and a discharge device; a solid-gas separation device is provided on the top of the material transition chamber, the polyester-specific granulation device, and the receiving device to separate the material from the gas. After separation, the material falls into the material transition chamber, the polyester-specific granulation device, and the receiving device respectively, and the separated gas is sent to the dust removal device through a conveying pipe.

[0023] Another objective of this invention is to provide a process for the resource-based recycling and treatment of waste textiles, comprising the following steps:

[0024] S1. Automatic sorting: The recycled waste textiles are separated in an orderly manner by a rotary separator and then sent to a waste textile material sorting machine. Waste textiles containing polyester fibers are sorted, while waste textiles without polyester fibers are sent to a collection bag by a conveyor belt.

[0025] S2. Slitting: Waste textiles containing polyester fibers are fed into a special waste textile slitting machine via a conveyor belt. Two special waste textile slitting machines are used to cut the textiles horizontally and vertically to obtain sheet materials of 20-100mm.

[0026] S3. Metal sorting: After the cut material is sorted by the metal detection conveyor, the iron, non-ferrous metals and stainless steel in the material are removed by the iron separator, eddy current separator and stainless steel separator and sent to the corresponding collection bags for collection.

[0027] S4. Crushing: The metal-free material after metal sorting is fed into a waste textile crusher via a conveyor belt to crush the material into fragments smaller than or equal to 20mm.

[0028] S5. Heavy material sorting: The crushed material is sent to the air classifier by positive pressure air, where the heavy material and the light material are separated. The separated heavy material is sent into the collection bag for collection, and the generated waste gas is sent to the dust removal device for centralized treatment.

[0029] S6. Granulation: The polyester material after air separation is sent to the material transition silo for storage by positive pressure air, and then discharged to the polyester-specific granulation device for granulation. After granulation, the granules are cut by a waste textile special cutting machine to obtain polyester granules. Then, they are sent to the receiving device by negative pressure air. The receiving device separates out the small particles that do not meet the requirements and sends them back to the polyester-specific granulation device for granulation. The receiving device receives the polyester granules that meet the requirements for collection and bagging. The generated waste gas is sent to the dust removal device for centralized treatment.

[0030] Combining all the above technical solutions, the advantages and positive effects of this invention are as follows:

[0031] 1. This invention provides a waste textile resource recycling system and process. By setting up an automatic sorting unit, a cutting unit, a metal sorting unit, a crushing unit, a heavy object sorting unit, and a pelletizing unit, recycled polyester particles are finally obtained. This not only improves the resource utilization rate of waste textiles and alleviates the current situation of resource shortage in the textile industry, but also reduces the pollution caused by waste textiles to the environment.

[0032] 2. This invention utilizes physical methods to make high-value use of waste textiles, transforming them into renewable resources. The waste gas treatment in the system ensures that there are no harmful emissions during the entire recycling process, thus avoiding harm to the environment. It enables large-scale, resource-based, and systematic recycling and reprocessing of waste textiles, systematically addressing the social stock of waste textiles and possessing significant economic and environmental benefits.

[0033] 3. This invention achieves closed conveying of pulverized materials by combining positive / negative pressure fans and solid-gas separation devices. This not only has high conveying efficiency and small equipment footprint, but also avoids material contamination and environmental pollution, ensuring conveying quality. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the waste textile resource recycling and processing system provided in an embodiment of the present invention.

[0036] Figure 2 This is a flowchart of a waste textile resource recycling process provided in one embodiment of the present invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] To address the problems existing in the prior art, the present invention provides a system and process for the resource-based recycling and processing of waste textiles. The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] like Figure 1 As shown, the waste textile recycling system provided in this embodiment of the invention includes an automatic sorting unit, a cutting unit, a metal sorting unit, a crushing unit, a heavy object sorting unit, and a pelletizing unit connected in sequence. The automatic sorting unit, the cutting unit, the metal sorting unit, and the crushing unit are connected by conveyor belts for material transfer, and the crushing unit, the heavy object sorting unit, and the pelletizing unit are connected by a pneumatic conveying device for closed material transfer.

[0040] In one specific embodiment, the automatic sorting unit consists of a rotary feeder, a waste textile material sorting machine, and a conveyor belt connecting them. The rotary feeder and the waste textile material sorting machine are connected by a conveyor belt. The waste textile material sorting machine has two conveying routes: one is connected to the slitting unit via a conveyor belt for conveying sorted textiles containing polyester fibers, and the other conveyor line is used for conveying sorted non-polyester textiles. The recycled waste textiles are fed into the rotary feeder via the conveyor belt for orderly separation, and then quickly fed into the waste textile material sorting machine via the conveyor belt. The waste textile material sorting machine uses optical principles to identify waste textiles containing polyester fibers and sends them to the slitting unit via the conveyor belt. The sorted waste textiles without polyester fibers are then conveyed into collection bags for collection. This scheme allows for the large-scale and rapid automatic sorting of recycled waste textiles, resulting in high work efficiency.

[0041] In one specific embodiment, the slitting unit is used to cut the waste textiles containing polyester fibers conveyed by the automatic sorting unit to obtain sheet materials. In this embodiment, two waste textile slitting machines are used, connected by a conveyor belt. First, the waste textiles containing polyester fibers are fed into one waste textile slitting machine for horizontal cutting, and then conveyed to another waste textile slitting machine for vertical cutting. This secondary cutting yields sheet materials of 20-100mm, which are convenient for sorting by downstream equipment. In actual implementation, the number of waste textile slitting machines can be increased or decreased as needed. Of course, for the slitting unit itself, the purpose is to cut the textiles into sheet materials of 20-100mm. Other structures that can achieve the function of two waste textile slitting machines are also within the scope of protection of this application.

[0042] In one specific embodiment, the metal sorting unit consists of a metal detection conveyor, an iron separator, an eddy current separator, and a stainless steel separator connected sequentially by a conveyor belt. This unit is used to remove metals (such as metal zippers and buttons) from the sheet-like materials conveyed by the slitting unit. The metal detection conveyor is connected to the slitting unit terminal via a conveyor belt. After slitting by the slitting unit, the metal detection conveyor first separates the metal-containing materials, while the metal-free materials are directly fed into the crushing unit via the conveyor belt. Specifically, the metal detection conveyor includes two conveying ends, one of which is used to directly convey metal-free polyester textiles. This conveying end is directly connected to the crushing unit via a conveyor belt. The other conveyor end transports the separated polyester textile containing metals. This conveyor end is connected to the input end of the iron separator via a conveyor belt. The iron separator has two output ends: one output end outputs the separated iron, and the other output end is connected to the input end of the eddy current separator via a conveyor belt. One output end of the eddy current separator outputs non-ferrous metals, and the other output end is connected to the input end of the stainless steel separator via a conveyor belt. One output end of the stainless steel separator outputs stainless steel, and the other output end of the stainless steel separator is connected to the crushing unit via a conveyor belt. Of course, in actual implementation, additional equipment can be added to remove metals from waste textiles depending on the specific metals contained. The metal-containing material separated by the metal detection conveyor sequentially passes through the iron separator, eddy current separator, and stainless steel separator to separate iron, non-ferrous metals, and stainless steel, respectively. The separated metals are then transported to corresponding collection bags for collection. The metal-free material separated by the stainless steel separator is conveyed to the crushing unit via a conveyor belt. This method thoroughly removes metal impurities from the material, improving the quality of the recycled material.

[0043] In one specific embodiment, the crushing unit is equipped with a waste textile crusher, and the metal-free output end of the metal detection conveyor and the stainless steel separator are respectively connected to the input end of the waste textile crusher via conveyor belts; the material after metal separation is fed into the waste textile crusher via the conveyor belt, and the material is finely crushed by the waste textile crusher to obtain fragments of less than or equal to 20mm; a first positive pressure fan is provided between the crushing unit and the heavy object sorting unit, and the first positive pressure fan is sealed to the heavy object sorting unit and the crushing unit respectively via conveying pipes, and the crushed material is sent to the heavy object sorting unit with positive pressure air.

[0044] Specifically, the heavy material sorting unit is equipped with an air classifier, which connects to the crushing unit and the granulation unit. The crushed material is separated by the air classifier based on its density ratio, separating heavy materials (such as non-polyester zippers, buttons, and other impurities) from polyester materials. The heavy materials are collected in a collection bag, while the polyester materials are conveyed to the granulation unit via a pneumatic conveyor. The resulting waste gas is sent to a dust removal device for centralized treatment. This method effectively removes impurities from the material, ensuring its purity.

[0045] Specifically, the pelletizing unit includes a material transition bin for storing and conveying materials, a polyester-specific pelletizing device, a polyester-specific cutter, and a receiving device. The material transition bin is sealed to the air classifier via a conveying pipe, the polyester-specific pelletizing device is sealed to the material transition bin via a conveying pipe, the polyester-specific cutter is sealed to the polyester-specific pelletizing device via a conveying pipe, and is used to cut the pelletized material to obtain polyester granules. The receiving device is sealed to the polyester-specific cutter via a conveying pipe.

[0046] In practice, solid-gas separation devices for separating materials from gas are installed at the top of the material transition silo, the polyester special granulation device, and the receiving device. After separation, the materials fall into the material transition silo, the polyester special granulation device, and the receiving device respectively. The separated waste gas is sent to the dust removal device for centralized treatment through the conveying pipe.

[0047] The material transition chamber is a sealed chamber structure, with a stirring device and a discharge device inside. A second positive pressure fan is installed between the material transition chamber and the air classifier. The second positive pressure fan is sealed to the solid-gas separation device and the air classifier at the top of the material transition chamber through a conveying pipe. The air-classified polyester material is sent to the solid-gas separation device by positive pressure air. After the material is separated from the gas by the solid-gas separation device, it falls into the material transition chamber for storage. Then, it is evenly fed to the polyester special granulation device through the discharge device.

[0048] A third positive pressure fan is installed between the polyester-specific granulation unit and the material transition silo. The third positive pressure fan is sealed to the solid-gas separation device at the top of the polyester-specific granulation unit and the discharge device of the material transition silo through conveying pipes. The polyester-specific granulation unit and the polyester-specific cutting machine are also sealed to each other through conveying pipes. The material in the material transition silo is conveyed to the third positive pressure fan through the discharge device, and then blown by the third positive pressure fan to the polyester-specific granulation unit for granulation. After granulation, the material is sent to the polyester-specific cutting machine.

[0049] The receiving device is sealed to the polyester-specific cutter via a conveying pipe. A negative pressure fan is installed at the end of the receiving device, connected to the conveying pipe, creating a negative pressure environment for both the polyester-specific cutter and the receiving device. This allows the granulated material to first be drawn into the polyester-specific cutter for cutting into polyester granules, which are then drawn into the receiving device. The receiving device collects and bags the qualified polyester granules and separates out the unqualified fine granules, returning them to the polyester-specific granulation device for further granulation. Using this technical solution, waste textiles can be transformed into recycled polyester granules for the production of recycled products.

[0050] In one embodiment, a dust removal device is further included. The dust removal device is sealed and connected to both the heavy material sorting unit and the granulation unit, respectively, for centralized treatment of the exhaust gas generated in the heavy material sorting unit and the granulation unit. The exhaust gas discharge sections of the heavy material sorting unit and the granulation unit are respectively connected to the dust removal device via pipelines. The exhaust gas generated in the heavy material sorting unit and the granulation unit is sent to the dust removal device for centralized treatment via conveying pipes.

[0051] This invention also provides a process for the resource-based recycling and treatment of waste textiles, such as... Figure 2 As shown, it includes the following steps:

[0052] S1. Automatic sorting: The recycled waste textiles are orderly separated by a rotary separator and then sent to a waste textile material sorting machine to sort the waste textiles containing polyester fibers. The sorted waste textiles without polyester fibers are sent to a collection bag by a conveyor belt for collection and bagging.

[0053] S2. Slitting: The sorted waste textiles containing polyester fibers are fed into a waste textile slitting machine via a conveyor belt. Two waste textile slitting machines cut the textiles horizontally and vertically to obtain sheet materials of 20-100mm.

[0054] S3. Metal sorting: After the slit sheet material is sorted by the metal detection conveyor, the iron, non-ferrous metals and stainless steel in the material are removed by the iron separator, eddy current separator and stainless steel separator and then sent into the corresponding collection bags for collection and bagging.

[0055] S4. Crushing: The sorted materials that do not contain metal are fed into a waste textile crusher via a conveyor belt to crush the materials into fragments of less than or equal to 20mm.

[0056] S5. Heavy material sorting: The crushed material is sent to the air classifier by positive pressure air. The air classifier separates heavy materials (such as non-polyester zippers, buttons and other impurities) from light materials (polyester materials). The separated heavy materials are sent into the collection bag for collection and bagging. The generated exhaust gas is sent to the dust removal device for centralized treatment.

[0057] S6. Granulation: The polyester material after air separation is sent to the material transition silo for storage by positive pressure air, and then discharged to the polyester-specific granulation device for granulation. After granulation, it is cut by a waste textile special cutting machine to obtain polyester granules. Then, it is sent to the receiving device by negative pressure air. The receiving device separates out the small particles that do not meet the requirements and sends them back to the polyester-specific granulation device for granulation. The receiving device receives the polyester granules that meet the requirements for collection and bagging. The generated exhaust gas is centrally treated by the dust removal device.

[0058] The above-mentioned process can achieve efficient and systematic recycling and reprocessing of waste textiles to obtain recycled polyester granules.

[0059] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention and within the spirit and principles of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A system for the resource-based recycling and processing of waste textiles, characterized in that, include: An automatic sorting unit is used to sort recycled waste textiles to obtain waste textiles containing polyester fibers. The slitting unit is connected to the automatic sorting unit via a conveyor belt and is used to cut the waste textiles containing polyester fibers conveyed by the automatic sorting unit into sheet materials. A metal sorting unit, connected to the slitting unit via a conveyor belt, is used to remove metal from the sheet material conveyed by the slitting unit. The crushing unit is connected to the metal sorting unit via a conveyor belt and is used to crush the material sorted by the metal sorting unit. The heavy object sorting unit is matched and sealed with the crushing unit, and is used to air classify the material crushed by the crushing unit to obtain polyester material free of impurities; The pelletizing unit is matched and sealed with the heavy object sorting unit, and is used to pelletize the material sorted by the heavy object sorting unit and cut it to obtain polyester particles of the required specifications; the crushing unit, the heavy object sorting unit and the pelletizing unit are connected by a pneumatic conveying device to achieve closed conveying. The pelletizing unit includes a material transition chamber, a polyester-specific pelletizing device, a polyester-specific cutting machine, and a receiving device. The crushing unit, the heavy material sorting unit, and the pelletizing unit are connected in a sealed manner by a pneumatic conveying device. The pneumatic conveying device includes: a first positive pressure fan, arranged between the crushing unit and the heavy material sorting unit and respectively sealed to them; a second positive pressure fan, arranged between the material transition chamber and the air separation device of the heavy material sorting unit and respectively sealed to them; a third positive pressure fan, arranged between the polyester-specific pelletizing device and the material transition chamber and respectively sealed to them; and a negative pressure fan arranged at the end of the receiving device to keep the polyester-specific cutting machine and the receiving device under negative pressure. The material transition chamber is a sealed chamber and is equipped with a stirring device and a discharge device; solid-gas separation devices are respectively installed on the top of the material transition chamber, the polyester special granulation device and the receiving device, and the separated gas is sent to the dust removal device in parallel through the conveying pipeline for centralized treatment. The receiving device is used to receive polyester granules that meet the requirements and to return non-compliant fine particles to the polyester-specific pelletizing device.

2. The waste textile resource recycling and processing system as described in claim 1, characterized in that, It also includes a dust removal device, which is matched and sealed with the heavy object sorting unit and the granulation unit respectively, and is used to centrally treat the waste gas generated in the heavy object sorting unit and the granulation unit.

3. The waste textile resource recycling and processing system as described in claim 1, characterized in that, The automatic sorting unit includes: A rotary feeder is used to orderly separate recycled waste textiles. The waste textile material sorting machine is connected to the rotary feeder via a conveyor belt for material transfer. The waste textile material sorting machine is used to sort out waste textiles containing polyester fibers and transport them to the slitting unit via the conveyor belt. Waste textiles without polyester fibers are sent into the collection bag via the conveyor belt for collection.

4. The waste textile resource recycling and processing system as described in claim 1, characterized in that, The slitting unit includes a waste textile slitting machine, which is connected to the automatic sorting unit and the metal sorting unit via a conveyor belt. The waste textile slitting machine is used to cut waste textiles containing polyester fibers horizontally and vertically to obtain sheet materials of 20-100mm.

5. The waste textile resource recycling and processing system as described in claim 4, characterized in that, The number of waste textile special slitting machines is at least two, and the two waste textile special slitting machines are connected by a conveyor belt to realize horizontal cutting and vertical cutting respectively.

6. The waste textile resource recycling and processing system as described in claim 1, characterized in that, The metal sorting unit includes a metal detection conveyor, an iron separator, an eddy current separator, and a stainless steel separator connected in sequence by a conveyor belt. The metal-containing material sorted by the metal detection conveyor passes through the iron separator, eddy current separator, and stainless steel separator in sequence to separate iron, non-ferrous metals, and stainless steel, respectively, and the sorted metals are transported to the corresponding collection bags. The metal detection conveyor is connected to the crushing unit via a conveyor belt; the stainless steel separator is connected to the crushing unit via a conveyor belt. The metal-free materials separated by the metal detection conveyor and stainless steel separator are conveyed to the crushing unit via a conveyor belt.

7. A waste textile resource recycling and processing system as described in any one of claims 1-6, characterized in that, The crushing unit includes a waste textile crusher, which is used to crush the metal-sorted material into fragments smaller than or equal to 20mm.

8. The waste textile resource recycling and processing system as described in claim 7, characterized in that, The heavy material sorting unit includes an air separation device, which is connected to the crushing unit and the granulation unit. The crushed material is transported to the air separation device by a pneumatic conveying device to separate the heavy material and polyester material according to density and then transport them to the accumulation bag and the granulation unit respectively.

9. A process for the resource-based recycling and treatment of waste textiles, characterized in that, A waste textile resource recycling system according to any one of claims 1 to 8 includes the following steps: S1. Automatic sorting: The recycled waste textiles are separated in an orderly manner by a rotary separator and then sent to a waste textile material sorting machine. Waste textiles containing polyester fibers are sorted, while waste textiles without polyester fibers are sent to a collection bag by a conveyor belt. S2. Slitting: Waste textiles containing polyester fibers are fed into a special waste textile slitting machine via a conveyor belt. Two special waste textile slitting machines are used to cut the textiles horizontally and vertically to obtain sheet materials of 20-100mm. S3. Metal sorting: After the cut material is sorted by the metal detection conveyor, the iron, non-ferrous metals and stainless steel in the material are removed by the iron separator, eddy current separator and stainless steel separator and sent to the corresponding collection bags for collection. S4. Crushing: The metal-free material after metal sorting is fed into a waste textile crusher via a conveyor belt to crush the material into fragments smaller than or equal to 20mm. S5. Heavy material sorting: The crushed material is sent to the air classifier by positive pressure air, where the heavy material and the light material are separated. The separated heavy material is sent into the collection bag for collection, and the generated waste gas is sent to the dust removal device for centralized treatment. S6. Granulation: The polyester material after air separation is sent to the material transition silo for storage by positive pressure air, and then discharged to the polyester-specific granulation device for granulation. After granulation, the granules are cut by a waste textile special cutting machine to obtain polyester granules. Then, they are sent to the receiving device by negative pressure air. The receiving device separates out the small particles that do not meet the requirements and sends them back to the polyester-specific granulation device for granulation. The receiving device receives the polyester granules that meet the requirements for collection and bagging. The generated waste gas is sent to the dust removal device for centralized treatment.

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