Separating device for recycling waste textiles

Abstract

The invention belongs to the technical field of waste textile recovery equipment, and particularly relates to a separation device for waste textile recovery, which is used for separating a waste quilt core which only retains an upper-layer coated fiber braided fabric and a lower-layer thermal insulation fiber layer, and comprises a first conveying mechanism, a second conveying mechanism, a third conveying mechanism and a fourth conveying mechanism, the feeding mechanism is in butt joint with the output end of the first conveying mechanism and is used for flattening and compacting the waste quilt cores and continuously conveying the waste quilt cores; the second conveying mechanism is used for receiving and conveying the separated thermal insulation fiber layer; wherein the first conveying mechanism, the feeding mechanism and the second conveying mechanism are sequentially mounted on the rack from left to right; the device further comprises a net cotton separating mechanism and the like. By means of continuous collaborative operation of the first conveying mechanism, the feeding mechanism, the net and cotton separating mechanism, the net stripping mechanism, the negative pressure mechanism and the second conveying mechanism, continuous treatment of waste quilt cores from conveying, flattening and compacting to net and cotton separating and stripping is achieved.

Description

Technical Field

[0001] This invention belongs to the technical field of waste textile recycling equipment, and specifically relates to a separation device for waste textile recycling. Background Technology

[0002] Waste textiles typically include typical household textile waste such as waste quilt cores. Among them, waste quilt cores are a representative category. Their core structure consists of an outer layer of woven fiber fabric and an inner layer of insulating fiber: the outer layer is a dense fabric layer made of cotton or chemical fibers through woven or nonwoven processes, and the inner layer is a loose and fluffy fiber filling layer formed by cotton fibers, chemical fibers or their blends. The two layers are tightly bonded together by sewing, gluing or mechanical entanglement (such as needle punching reinforcement) to form a stable insulating structure. The recycling of waste quilt cores is of great significance to resource recycling and environmental protection. If the outer and inner layers can be effectively separated, the outer fabric can be further recycled into non-woven fabrics, low-end textiles, etc., while the inner fibers can be used for building insulation materials, automotive filling materials, or blended with virgin fibers to produce new products. If they are not separated and are directly landfilled or incinerated, it will not only waste fiber resources, but also exacerbate the environmental burden due to the non-degradable nature of chemical fibers. Currently, the industry commonly uses manual separation methods to separate the outer layer of fabric from the inner layer of insulation fibers in waste quilts. This involves operators manually cutting or tearing the outer layer of fabric with tools such as knives and scissors to peel off the inner layer of fibers. However, this method has significant drawbacks: manual operation is limited by human strength and operational precision, resulting in low separation efficiency and making it difficult to meet the needs of large-scale recycling; during the separation process, the tearing and breakage of the outer layer of fabric and the inner layer of fibers generates a large amount of inhalable fiber dust (containing irritating substances or residual additives), which can easily cause respiratory diseases such as cotton dust disease and pneumoconiosis, as well as occupational health problems such as skin and eye irritation for operators in long-term exposure; manual tearing cannot accurately control the separation interface, often resulting in outer layer fabric fragments mixing into the inner layer of fibers or inner layer short fibers adhering to the outer layer of fabric, significantly reducing the purity of the recycled material, which can ultimately only be used in low-value-added fields such as filling and fuel. Summary of the Invention

[0003] (a) Technical problems to be solved To overcome the problems of low efficiency, high health risks (fiber dust generated during the separation process can easily cause respiratory diseases and skin and eye irritation for operators), serious material mixing (outer fabric fragments mixed with inner fibers or short inner fibers remaining in the outer fabric, leading to a decrease in purity), and high cost in existing technologies for separating the outer layer of waste quilt cores from the inner layer of insulation fiber layer, this invention provides a woven fiber layer separation device that is highly efficient, low-cost, and produces clean material separation while ensuring the health of operators.

[0004] (II) Technical Solution This invention is achieved through the following technical solution: This invention proposes a separation device for recycling waste textiles, used to separate waste quilt cores that retain only the upper layer of woven fiber fabric and the lower layer of insulating fiber. The waste quilt cores can be directly cut with a flat cutting device, which consists of a belt conveyor mechanism and a flat cutting blade. The belt conveyor mechanism transports the waste quilt cores, and the flat cutting blade directly cuts the waste quilt cores towards approximately the middle position. Including: The first conveying mechanism is used to convey waste quilt cores with the woven fiber covering facing upwards; The feeding mechanism is connected to the output end of the first conveying mechanism and is used to flatten, compact and continue to convey the waste quilt core; The second conveying mechanism is used to receive and convey the separated insulation fiber layer; The first and second conveying mechanisms are generally existing belt conveyor mechanisms, which consist of a driving pulley, a driven pulley, and a belt; The first conveying mechanism, the feeding mechanism, and the second conveying mechanism are installed on the frame from left to right. It also includes a mesh separation mechanism; The web separation mechanism is mounted on the frame; The cotton separation mechanism includes a separation roller, a cotton stripping roller, and an arc-shaped support plate; The mounting bracket is installed on the rack; The separating roller is mounted on the mounting frame via bearings, and its outer surface is evenly distributed with several separating spikes. The separating spikes are inclined and the inclination direction is consistent with the rotation direction of the separating roller; The arc-shaped support plate is installed on the frame via elastic support seats (at least four are provided for greater stability), located below the separating roller. Its arc shape matches the outer circle shape of the separating roller, and the docking point with the output end of the feeding mechanism is set with a V-shaped opening (used to compact the waste quilt core to enhance the hooking effect of the separating spikes on the covered fiber woven fabric, and also serves as a guide). The cotton stripping roller is mounted on the frame via bearings and is located above the output end of the second conveying mechanism. Its rotation direction is the same as that of the separating roller, and a number of cotton stripping needles are evenly distributed on its outer surface. The cotton stripping needle is inclined and the direction of inclination is opposite to the rotation direction of the cotton stripping roller; The separating roller rotates counterclockwise. The cotton separation mechanism is used to separate the cotton-coated fabric and the insulation fiber layer by rotating the separation roller and the stripping roller. This includes a stripping mechanism and a negative pressure mechanism for extracting the woven fabric with the coated fibers using negative pressure (generally consisting of a negative pressure fan, conveying pipes and a collection device, which uses airflow to generate suction to extract and collect the separated woven fabric with the coated fibers from the stripping mechanism). The stripping mechanism is mounted on the mounting frame via a semi-enclosed housing; The screen stripping mechanism includes a screen stripping roller, a transfer roller, a loosening roller, a semi-enclosed volute housing, and a loosening blade; Both the stripping roller and the transfer roller are mounted on the semi-enclosed housing via bearings, with the transfer roller located to the right of the stripping roller. The stripping roller rotates in the opposite direction to the separating roller, and its outer surface is evenly distributed with several stripping spikes. The stripping barbs are inclined and their inclination direction is consistent with the rotation direction of the stripping roller. The transfer roller rotates in the opposite direction to the stripping roller, and its outer surface is evenly distributed with several transfer spikes. The transfer spike is inclined and its inclination direction is consistent with the rotation direction of the transfer roller; The semi-enclosed volute is installed on the semi-enclosed outer shell and located to the right of the transfer roller, with its right end connected to the negative pressure mechanism. The opening roller is mounted in a semi-enclosed volute housing via bearings, and its rotation direction is opposite to that of the transfer roller. Several opening needles are evenly distributed on its outer surface. The opening needle is vertically positioned on the outer surface of the opening roller; The end of the semi-enclosed volute shell furthest from the web separation mechanism is connected to the negative pressure mechanism; A loosening blade is installed at the bottom of the semi-enclosed volute housing, and the loosening blade is vertically positioned directly below the loosening roller; The stripping mechanism is used to make the stripping needles, transfer needles and opening needles hook the covered fiber woven fabric in sequence through the rotational cooperation of the stripping roller, transfer roller and opening roller, and then use the rotational tension to realize the transfer and recycling of the covered fiber woven fabric; Preferably, the semi-enclosed shell is further equipped with a compaction mechanism, which cooperates with the separating roller and is located below the stripping roller; The compaction mechanism includes a mounting plate, a compaction roller, a telescopic tube, an elastic element, and a support rod; The mounting plate and support rod are hinged to the semi-enclosed shell, and the telescopic tube is hinged to the mounting plate; The telescopic tube is sleeved with the support rod and connected to the support rod through an elastic element; The compaction roller is mounted on the mounting plate via bearings, and the compaction roller is matched with the output end of the web separating mechanism.

[0005] Preferably, the frame is also equipped with a beater mechanism; the beater mechanism is located to the right of the stripping roller and cooperates with the output end of the stripping roller; The beater mechanism includes a beater roller and blades; The hand roller is mounted on the frame via bearings. The hand roller has several blades at equal intervals along its circumference and length (4-8 rectangular cross-section blade steel plates are welded to the surface of the hand roller).

[0006] Preferably, the gap between the end of the V-shaped opening closest to the separating roller and the separating roller is 0.5-5mm, best 1-3mm, and most preferably 1mm; The end of the pallet near the stripping roller is designed with a blade-like structure (the blade is located near the separating roller, and its function is to facilitate the smooth transfer of cotton fibers stripped by the stripping needle roller; the gap between the end of the pallet and the separating roller is 1-6mm, preferably 3mm).

[0007] Preferably, the feeding mechanism includes a support frame and at least one pair of feeding rollers that cooperate vertically. The support frame is mounted on the machine frame; The at least one pair of feed rollers are mounted on the support frame, wherein the upper feed roller is adjustablely mounted on the support frame by means of springs and tensioners; When the feeding mechanism is provided with two pairs of feeding rollers that cooperate vertically, the feeding mechanism also includes a spreading roller and a support roller that cooperate vertically (the spreading roller and support roller may not be provided). Both the spreading roller and the support roller are mounted on the frame and positioned between two pairs of feed rollers; The spreading roller is adjustablely mounted on the support frame by springs and tensioners. Its outer surface is provided with a left-handed strip arm and a right-handed strip arm. The ends of the left-handed strip arm and the right-handed strip arm are connected and the connection position is located in the middle of the spreading roller. The support rollers are mounted on the frame; The feed rollers can be configured in two modes: one pair of feed rollers or two pairs of feed rollers.

[0008] When a pair of feed rollers are used in conjunction, the linear velocity ratio between the feed roller and the separation roller is 0.6-1, preferably 0.85; When there are two pairs of feed rollers that cooperate vertically, the linear velocity ratio of the two pairs of feed rollers on the left and right is 0.6-1, preferably 0.85, and the linear velocity ratio of the pair of feed rollers on the right side closest to the separation roller to the separation roller is 0.6-1, preferably 0.85. When two pairs of feed rollers cooperate, a spreading roller and a support roller are also provided. The linear velocity ratio between the pair of feed rollers on the left side near the separating roller and the spreading roller is 0.2-1, preferably 0.5.

[0009] Preferably, the linear speed ratio of the stripping roller and the separating roller is 1-1.8, and most preferably 1.2; The linear speed ratio of the transfer roller and the stripping roller is 1-1.8, with an optimal value of 1.2; The rotational speed of the opening roller is 600-1400 rpm, with 1000 rpm being optimal.

[0010] Preferably, the angle of inclination of the separating spikes is 10-50°, best 30-40°, most preferably 40°, and the density is 500-1200 spikes per inch, most preferably 1075 spikes per inch; The tilt angle of the cotton stripping needle is 0-30°; The gap between the cotton stripping roller and the separating roller is 0.3-3mm.

[0011] Preferably, the tilt angle of the stripping barbs and the transfer barbs is 0-30°; The stripping barbs and transfer barbs are arranged in an alternating or aligned manner. The loosening needles and the transfer needles are arranged alternately. The starting roller is also provided with several partitions at equal intervals along its circumference and length, and the partitions are located between two adjacent groups of opening needles; When the stripping barbs and transfer barbs are evenly distributed on the surfaces of the stripping roller and transfer roller, the spacing between each stripping barb and transfer barb is d=3-20mm, preferably 10-15mm, and more preferably 12mm; when the stripping barbs and transfer barbs are staggered, the distance between the stripping barbs and transfer barbs is 0-5mm, preferably 2mm. The barbs for stripping and transfer are spirally arranged on the surfaces of the stripping roller and the transfer roller, with a density of 300-800 barbs per inch, preferably 398 barbs per inch; the barbs for stripping and transfer are aligned, with a tangential distance of 0-3 mm between the barbs for stripping and transfer, preferably 0.6 mm; The spacing between each loosening needle is set to be the same as the spacing of the stripping needles mentioned above. The distance between the loosening needle and the transfer needle is 0-6mm, preferably 4mm.

[0012] Preferably, the bottom of the cotton-removing needle is cylindrical with a diameter of 2-6 mm, and the top is a spike. The height of the cotton stripping needle is 5-20mm.

[0013] Preferably, the first conveying mechanism, the second conveying mechanism, the feeding mechanism (feeding roller, spreading roller, support roller), the web separating mechanism, the web stripping mechanism (web stripping roller, transfer roller, opening roller), and the beater mechanism (beater roller) can all be driven by a single motor or a linked motor.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention has the following advantages: This invention achieves continuous processing of waste quilt cores from conveying, flattening, and compacting to separating and peeling the web and cotton through the continuous coordinated operation of a first conveying mechanism, a feeding mechanism, a web and cotton separation mechanism, a negative pressure mechanism, and a second conveying mechanism. Specifically, the first conveying mechanism stably conveys the flattened quilt cores to the feeding mechanism, which flattens and compacts them before accurately transferring them to the web and cotton separation mechanism. The separated inner fibers are received and output by the second conveying mechanism, while the outer fabric is peeled and collected through the cooperation of the web and cotton separation mechanism and the negative pressure mechanism. This fully automated design completely changes the intermittent mode of traditional manual operation, eliminates waiting and connection losses between various links, significantly improves processing efficiency and process continuity, and provides reliable technical support for large-scale recycling. This invention achieves precise interface-level separation through the precise hooking design of the separating needles and the stripping needles. Specifically, the separating needles, based on their coordinated design with the rotation direction of the separating roller, only pierce the outer layer of densely covered fiber weave, avoiding interference with the inner layer of fibers. The stripping needles, on the other hand, precisely hook the inner layer of loose insulation fiber at a reverse tilt angle. The two work together in synchronous rotation to form a stable tension difference, ensuring that the separation process unfolds strictly along the interface between the two layers. This effectively avoids the fiber mixing problem caused by traditional manual tearing, thus guaranteeing the purity of the recycled materials from the source. This invention further ensures the complete removal and cleaning of the outer fabric through a multi-roller transfer and loosening process of the stripping mechanism. The stripping roller, transfer roller, and loosening needle work in sequence: the stripping roller receives the outer fabric from the separation roller by rotating in the opposite direction; the transfer roller achieves smooth transfer of the fabric through speed difference and staggered arrangement of needles; and the loosening needles loosen the fabric appropriately during high-speed rotation to avoid fiber entanglement. This progressive processing flow not only ensures the complete removal of the outer fabric but also reduces the residue of inner fibers through physical action, so that both the recycled outer fabric and inner fibers can maintain a high purity state, providing a high-quality raw material basis for subsequent recycling. Attached Figure Description

[0015] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a three-dimensional structural diagram of the separation device of the present invention.

[0016] Figure 2 This is a schematic diagram illustrating the working principle of the separation device of the present invention.

[0017] Figure 3 This is a schematic diagram of the compaction mechanism of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the spreading roller of the present invention.

[0019] Figure 5This is a schematic diagram of the structure of the striking mechanism of the present invention.

[0020] Figure 6 This is a schematic diagram of the separation roller of the present invention.

[0021] Figure 7 This is a schematic diagram of the structure of the barbed wire stripping device of the present invention.

[0022] Figure 8 This is a schematic diagram of the structure of the stripping roller and transfer roller of the present invention.

[0023] Figure 9 This is a schematic diagram of the structure of the stripping roller, transfer roller, and opening needle of the present invention.

[0024] Figure 10 This is a schematic diagram of the structure of the cotton stripping roller of the present invention.

[0025] The labels in the attached diagram are as follows: 1-frame, 2-first conveying mechanism, 3-second conveying mechanism, 4-feeding mechanism, 41-support frame, 42-tensioning element, 43-spring, 44-feeding roller, 45-spreading roller, 451-left-hand rotating arm, 452-right-hand rotating arm, 46-support roller, 5-web separating mechanism, 51-separating roller, 52-separating spike, 53-arc-shaped support plate, 54-elastic support seat, 55-V-shaped opening, 56-mounting frame, 57-stripping roller, 58-... - 6-Stripping needle, 6-Stripping mechanism, 61-Semi-enclosed shell, 62-Stripping roller, 63-Stripping barbs, 64-Transfer roller, 65-Transfer barbs, 66-Opening roller, 67-Opening needle, 68-Semi-enclosed volute shell, 69-Opening blade, 610-Partition, 7-Action mechanism, 71-Action roller, 72-Blade, 8-Compacting mechanism, 81-Mounting plate, 82-Compacting roller, 83-Telescopic tube, 84-Elastic element, 85-Support rod, A-Waste quilt core, B-Negative pressure mechanism. Detailed Implementation

[0026] In this technical solution: To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] Reference Figure 1 , Figure 2 As shown, the present invention is achieved through the following technical solution: The present invention proposes a separation device for recycling waste textiles, which is used to separate waste quilt cores that retain only the upper layer of covering fiber woven fabric and the lower layer of heat insulation fiber layer. The waste quilt cores can be directly cut with a flat cutting device, which is a belt conveyor mechanism and a flat cutting blade. The belt conveyor mechanism transports the waste quilt cores, and the flat cutting blade directly cuts the waste quilt cores to approximately the middle position. Including: The first conveying mechanism is used to convey waste quilt cores with the woven fiber covering facing upwards; The feeding mechanism is connected to the output end of the first conveying mechanism and is used to flatten, compact and continue to convey the waste quilt core; The second conveying mechanism is used to receive and convey the separated insulation fiber layer; The first and second conveying mechanisms are generally existing belt conveyor mechanisms, which consist of a driving pulley, a driven pulley, and a belt; The first conveying mechanism, the feeding mechanism, and the second conveying mechanism are installed on the frame from left to right. It also includes a mesh separation mechanism; The web separation mechanism is mounted on the frame; The cotton separation mechanism includes a mounting frame, a separation roller, a cotton stripping roller, and an arc-shaped support plate; The mounting bracket is installed on the rack; The separating roller is mounted on the mounting frame via bearings, and its outer surface is evenly distributed with several separating spikes. The separating spikes are inclined and the inclination direction is consistent with the rotation direction of the separating roller; The arc-shaped support plate is installed on the frame via elastic support seats (at least four are provided for greater stability), located below the separating roller. Its arc shape matches the outer circle shape of the separating roller, and the docking point with the output end of the feeding mechanism is set with a V-shaped opening (used to compact the waste quilt core to enhance the hooking effect of the separating spikes on the covered fiber woven fabric, and also serves as a guide). The cotton stripping roller is mounted on the frame via bearings and is located above the output end of the second conveying mechanism. Its rotation direction is the same as that of the separating roller, and a number of cotton stripping needles are evenly distributed on its outer surface. The cotton stripping needle is inclined and the direction of inclination is opposite to the rotation direction of the cotton stripping roller; The separating roller rotates counterclockwise. The cotton separation mechanism is used to separate the cotton-coated fabric and the insulation fiber layer by rotating the separation roller and the stripping roller. Among them, reference Figure 1 , Figure 2 As shown, it also includes a stripping mechanism and a negative pressure mechanism for extracting the woven fabric with the coated fibers by negative pressure (generally composed of a negative pressure fan, conveying pipes and a collection device, which uses airflow to generate suction to extract and collect the separated woven fabric with the coated fibers from the stripping mechanism). The stripping mechanism is mounted on the mounting frame via a semi-enclosed housing; The screen stripping mechanism includes a screen stripping roller, a transfer roller, a loosening roller, a semi-enclosed volute housing, and a loosening blade; Both the stripping roller and the transfer roller are mounted on the semi-enclosed housing via bearings, with the transfer roller located to the right of the stripping roller. The stripping roller rotates in the opposite direction to the separating roller, and its outer surface is evenly distributed with several stripping spikes. The stripping barbs are inclined and their inclination direction is consistent with the rotation direction of the stripping roller. The transfer roller rotates in the opposite direction to the stripping roller, and its outer surface is evenly distributed with several transfer spikes. The transfer spike is inclined and its inclination direction is consistent with the rotation direction of the transfer roller; The semi-enclosed volute is installed on the semi-enclosed outer shell and located to the right of the transfer roller, with its right end connected to the negative pressure mechanism. The opening roller is mounted in a semi-enclosed volute housing via bearings, and its rotation direction is opposite to that of the transfer roller. Several opening needles are evenly distributed on its outer surface. The opening needle is vertically positioned on the outer surface of the opening roller; The end of the semi-enclosed volute shell furthest from the web separation mechanism is connected to the negative pressure mechanism; A loosening blade is installed at the bottom of the semi-enclosed volute housing, and the loosening blade is vertically positioned directly below the loosening roller; The stripping mechanism is used to make the stripping needles, transfer needles and opening needles hook the covered fiber woven fabric in sequence through the rotational cooperation of the stripping roller, transfer roller and opening roller, and then use the rotational tension to realize the transfer and recycling of the covered fiber woven fabric; Among them, reference Figure 3 As shown, the semi-enclosed shell is also equipped with a compaction mechanism, which cooperates with the separating roller and is located below the stripping roller; The compaction mechanism includes a mounting plate, a compaction roller, a telescopic tube, an elastic element, and a support rod; The mounting plate and support rod are hinged to the semi-enclosed shell, and the telescopic tube is hinged to the mounting plate; The telescopic tube is sleeved with the support rod and connected to the support rod through an elastic element; The compaction roller is mounted on the mounting plate via bearings, and the compaction roller is matched with the output end of the web separating mechanism.

[0028] Among them, reference Figure 5 As shown, the frame is also equipped with a beater mechanism; the beater mechanism is located to the right of the stripping roller and cooperates with the output end of the stripping roller; The beater mechanism includes a beater roller and blades; The hand roller is mounted on the frame via bearings. The hand roller has several blades at equal intervals along its circumference and length (4-8 rectangular cross-section blade steel plates are welded to the surface of the hand roller).

[0029] The gap between the V-shaped opening and the separating roller closest to the separating roller is 0.5-5mm, preferably 1-3mm, and most preferably 1mm. The end of the pallet near the stripping roller is designed with a blade-like structure (the blade is located near the separating roller, and its function is to facilitate the smooth transfer of cotton fibers stripped by the stripping needle roller; the gap between the end of the pallet and the separating roller is 1-6mm, preferably 3mm).

[0030] The feeding mechanism includes a support frame and at least one pair of feeding rollers that cooperate vertically. The support frame is mounted on the machine frame; The at least one pair of feed rollers are mounted on the support frame, wherein the upper feed roller is adjustablely mounted on the support frame by means of springs and tensioners; When the feeding mechanism is provided with two pairs of feeding rollers that cooperate vertically, the feeding mechanism also includes a spreading roller and a support roller that cooperate vertically (the spreading roller and support roller may not be provided). Both the spreading roller and the support roller are mounted on the frame and positioned between two pairs of feed rollers; The spreading roller is adjustablely mounted to the support frame via springs and tensioning components, and its outer surface is provided with left-hand and right-hand rotating arms (see reference). Figure 4 As shown), the ends of the left and right spiral arms are connected, and the connection position is located in the middle of the spreading roller; The support rollers are mounted on the frame; The feed rollers can be configured in two modes: one pair of feed rollers or two pairs of feed rollers.

[0031] When a pair of feed rollers are used in conjunction, the linear velocity ratio between the feed roller and the separation roller is 0.6-1, preferably 0.85; When there are two pairs of feed rollers that cooperate vertically, the linear velocity ratio of the two pairs of feed rollers on the left and right is 0.6-1, preferably 0.85, and the linear velocity ratio of the pair of feed rollers on the right side closest to the separation roller to the separation roller is 0.6-1, preferably 0.85. When two pairs of feed rollers cooperate, a spreading roller and a support roller are also provided. The linear velocity ratio between the pair of feed rollers on the left side near the separating roller and the spreading roller is 0.2-1, preferably 0.5.

[0032] The linear velocity ratio of the stripping roller and the separating roller is 1-1.8, with an optimal value of 1.2. The linear speed ratio of the transfer roller and the stripping roller is 1-1.8, with an optimal value of 1.2; The rotational speed of the opening roller is 600-1400 rpm, with 1000 rpm being optimal.

[0033] Among them, reference Figure 6As shown, the tilt angle of the separating spikes is 10-50°, preferably 30-40°, and more preferably 40°, with a density of 500-1200 spikes per inch, preferably 1075 spikes per inch; Reference Figure 10 As shown, the tilt angle of the cotton stripping needle is 0-30°; The gap between the cotton stripping roller and the separating roller is 0.3-3mm.

[0034] Among them, reference Figure 7 As shown, the tilt angle of the stripping barbs and transfer barbs is 0-30°; Reference Figure 9 As shown, the stripping barbs and transfer barbs are arranged in an alternating or aligned manner; The loosening needles and the transfer needles are arranged alternately. The starting roller is also provided with several partitions at equal intervals along its circumference and length, and the partitions are located between two adjacent groups of opening needles; Reference Figure 8 , Figure 9 As shown, when the stripping barbs and transfer barbs are evenly distributed on the surfaces of the stripping roller and the transfer roller, the spacing between each stripping barb and transfer barb is d=3-20mm, preferably 10-15mm, and more preferably 12mm; when the stripping barbs and transfer barbs are staggered, the distance e between the stripping barbs and transfer barbs is 0-5mm, preferably 2mm. The barbs for stripping and transfer are spirally arranged on the surfaces of the stripping roller and the transfer roller, with a density of 300-800 barbs per inch, preferably 398 barbs per inch; the barbs for stripping and transfer are aligned, with a tangential distance of 0-3 mm between the barbs for stripping and transfer, preferably 0.6 mm; Reference Figure 9 As shown, the spacing between each loosening needle is set to be the same as the spacing of the stripping needles mentioned above, and the distance f between the loosening needle and the transfer needle is 0-6mm, preferably 4mm.

[0035] The cotton-removing needle has a cylindrical bottom with a diameter of 2-6mm and a pointed top. The height of the cotton stripping needle is 5-20mm.

[0036] Among them, the first conveying mechanism, the second conveying mechanism, the feeding mechanism (feeding roller, spreading roller, support roller), the web separating mechanism, the web stripping mechanism (web stripping roller, transfer roller, opening roller), and the beater mechanism (beater roller) can all be driven by a single motor or a linked motor.

[0037] This waste textile recycling separation device is designed for waste quilt cores (A) that have been cut flat and retain only the upper layer of woven fiber fabric and the lower layer of insulating fiber. Through multi-mechanism collaboration, it achieves fully automated processing from pretreatment to separation and collection. The specific working principle is as follows: First, the waste quilt core A needs to be processed by the flat cutting device. The first conveying mechanism 2 (composed of a drive wheel, a driven wheel and a belt) conveys the quilt core to the flat cutting knife position. The flat cutting knife cuts the quilt core in the middle, leaving only the upper dense covering fiber weave and the lower loose insulation fiber layer, forming a "two-layer" structure. The flat-cut quilt core A continues to be conveyed by the first conveying mechanism 2 to ensure that the covering fiber weave faces upwards into the subsequent stages. After the quilt core A is conveyed to the feeding mechanism 4 by the first conveying mechanism 2, it is initially flattened and compacted by the upper and lower feeding rollers 44. If the feeding mechanism 4 is equipped with two pairs of feeding rollers 44, a spreading roller 45 and a support roller 46 are added in the middle. When the left-hand spiral arm 451 and the right-hand spiral arm 452 on the outer surface of the spreading roller 45 rotate, the spiral steel strips expand the wrinkles on the surface of the woven fiber fabric, further improving the flatness. The upper feeding roller 44 and the spreading roller 45 are both adjustablely mounted on the support frame 41 by springs 43 and tensioning elements 42. The pressure can be adjusted according to the thickness of the quilt core A to ensure that quilt cores of different thicknesses can be compacted evenly. The linear speed of the feeding mechanism 4 is adjusted according to the number of pairs of feeding rollers 44. The linear speed ratio of a single pair of feeding rollers 44 is 0.6 to 1, preferably 0.85. The linear speed ratio of the two pairs of feeding rollers is 0.2 to 1, preferably 0.5, to match the processing rhythm of the subsequent separation mechanism. The quilt core A, flattened and compacted by the feeding mechanism 4, enters the web separating mechanism 5. The core mechanism consists of a separating roller 51, a stripping roller 57, and an arc-shaped support plate 53 working in tandem. The separating roller 51 rotates counter-clockwise, and the evenly distributed separating spikes 52 on its outer surface (with an inclination angle of 10 to 50 degrees and a density of 500 to 1200 spikes per inch) effectively penetrate the upper layer of the covering fiber weave because their inclination direction matches the rotation direction of the separating roller 51. The arc-shaped support plate 53 is installed below the separating roller 51 via at least four elastic support seats 54. Its arc shape matches the outer circle of the separating roller 51, and the V-shaped opening 55 at the connection point with the output end of the feeding mechanism 4 (with a gap of 0.5 to 5 mm, preferably 1 mm from the separating roller 51) further compacts the quilt core A, enhancing the bonding strength between the separating spikes 52 and the covering fiber weave, preventing detachment during subsequent peeling. Simultaneously, the cotton stripping roller 57 and the separating roller 51 rotate in the same direction (same rotation direction). The cotton stripping needles 58 on their outer surface scrape the loose insulation fiber layer off the covering fiber woven fabric. The cotton stripping needles 58 have an inclination angle of 0 to 30 degrees, a height of 5 to 20 mm, and a bottom cylindrical diameter of 2 to 6 mm. Since the inclination direction of the cotton stripping needles 58 is opposite to the rotation direction of the cotton stripping roller 57, it is easy for the insulation fiber layer to be peeled off from the cotton stripping needles. As the separating roller 51 and the cotton stripping roller 57 rotate synchronously, the covering fiber woven fabric hooked by the separating needles 52 and the insulation fiber layer hooked by the cotton stripping needles 58 achieve interlayer separation under the action of rotational tension. After the insulation fiber layer is peeled off, it falls to the second conveying mechanism 3 (belt conveying mechanism) below for output and collection, while the covering fiber woven fabric continues to rotate with the separating roller 51 and enter the subsequent peeling stage. After separation, the covered fiber woven fabric rotates with the separating roller 51 to the area of ​​the stripping mechanism 6. It first passes through the compacting roller 82 of the compacting mechanism 8 (the surface is covered with rubber to prevent damage to the separating spikes 52) to prevent the high-speed rotating stripping roller 62 from pulling the covered fiber woven fabric in advance and interfering with the normal stripping of the cotton stripping roller 57. Furthermore, the stripping mechanism 6 consists of a stripping roller 62, a transfer roller 64, an opening roller 66, and a semi-enclosed volute housing 68. The stripping roller 62 rotates in the opposite direction to the separating roller 51, with a linear speed ratio of 1 to 1.8, preferably 1.2. The stripping barbs 63 on its outer surface (with an inclination angle of 0 to 30 degrees and a density of 300 to 800 barbs per inch) are in the same direction of rotation as the stripping roller 62, allowing them to hook and transfer the covered fiber fabric from the separating roller 51. The transfer roller 64 rotates in the opposite direction to the stripping roller 62, with a linear speed ratio of 1 to 1.8, preferably 1.2. The transfer barbs 65 on its outer surface (with parameters identical to the stripping barbs 63) further receive and transport the covered fiber fabric. When the covered fiber fabric... When the woven fabric reaches the position of the opening roller 66, the opening roller 66 rotates in the opposite direction at a high speed of 600 to 1400 rpm (1000 rpm is optimal). The opening needles 67 and transfer thorns 65 arranged vertically on its outer surface are staggered. Combined with the edges of the opening roller 66 surface (to prevent fiber entanglement), the woven fabric is pulled into blocks or broken into fibers. Some long fibers are cut off at the opening blade 69 (vertically set directly below the opening roller 66) at the bottom as the opening roller 66 rotates. Finally, the woven fabric fragments and fibers in the semi-enclosed volute 68 are sucked out and collected through the right end connected to the negative pressure mechanism B (composed of a negative pressure fan, conveying pipe and collection device). In addition, the frame 1 is also equipped with a beater mechanism 7 located to the right of the stripping roller 57: the beater roller 71 is welded with 4 to 8 rectangular blade steel plates 72 at equal intervals along the circumference and length direction, and rotates at high speed in the same direction as the stripping roller 57. It can clean the residual heat-insulating fibers on the surface of the stripping roller 57 and ensure the stripping effect. The end of the arc-shaped support plate 53 near the stripping roller 57 is designed as a blade (the gap with the separating roller 51 is 1 to 6 mm, preferably 3 mm), which makes it easy for the stripped heat-insulating fibers to smoothly leave the support plate 53 and fall to the second conveying mechanism 3. In the entire device, the first conveying mechanism 2, the second conveying mechanism 3, the feeding mechanism 4 (including the feeding roller 44, the spreading roller 45, and the support roller 46), the web separation mechanism 5, the web stripping mechanism 6 (including the web stripping roller 62, the transfer roller 64, and the opening roller 66), and the beater mechanism 7 (including the beater roller 71) are all driven by individual motors or linked motors. Through precise matching of linear speed, rotational speed, and gap parameters (such as the gap between the web stripping roller 57 and the separation roller 51 being 0.3 to 3 mm, and the gap between the opening needle 67 and the transfer needle 65 being 0 to 6 mm), the efficient and high-purity automated separation of waste quilt core A is achieved, effectively solving the problems of low efficiency, high health risks, and mixed materials in traditional manual separation.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices recited in the apparatus claims may also be implemented by a single unit or device in software or hardware. The terms "first," "second," etc., are used to indicate names and do not indicate any particular order.

[0039] Finally, it should be noted that the above examples are merely specific embodiments of the present invention. Obviously, the present invention is not limited to the above examples and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this invention should be considered within the scope of protection of this invention.

Claims

1. A separation device for recycling waste textiles, used to separate waste quilt cores (A) that retain only the upper layer of woven fiber covering and the lower layer of insulating fiber; Including: Rack (1); The first conveying mechanism (2) is used to convey waste quilt cores (A) with the woven fiber fabric facing upwards. The feeding mechanism (4) is connected to the output end of the first conveying mechanism (2) and is used to flatten, compact and continue to convey the waste quilt core (A); The second conveying mechanism (3) is used to receive and convey the separated insulation fiber layer; in, The first conveying mechanism (2), the feeding mechanism (4), and the second conveying mechanism (3) are installed on the frame (1) from left to right. Its characteristic is that it also includes a web separating mechanism (5); The web separating mechanism (5) is installed on the frame (1); The cotton separation mechanism (5) includes a mounting frame (56), a separation roller (51), a cotton stripping roller (57), and an arc-shaped support plate (53). Mounting bracket (56) is mounted on rack (1); The separating roller (51) is mounted on the mounting frame (56) via a bearing, and its outer surface is evenly distributed with a number of separating spikes (52). The separating spikes (52) are inclined and the inclination direction is consistent with the rotation direction of the separating rollers (51); The arc-shaped support plate (53) is installed on the frame (1) through the elastic support base (54), located below the separating roller (51). Its arc shape matches the outer circle shape of the separating roller (51), and the docking point with the output end of the feeding mechanism (4) is set with a V-shaped opening (55). The cotton stripping roller (57) is mounted on the frame (1) via a bearing and is located above the output end of the second conveying mechanism (3). Its rotation direction is the same as that of the separating roller (51), and a number of cotton stripping needles (58) are evenly distributed on its outer surface. The cotton stripping needle (58) is inclined and the inclination direction is opposite to the rotation direction of the cotton stripping roller (57); The separating roller (51) rotates counterclockwise.

2. The separation device for recycling waste textiles according to claim 1, characterized in that: It also includes a stripping mechanism (6) and a negative pressure mechanism (B) for extracting the covered fiber braided fabric by negative pressure. The stripping mechanism (6) is mounted on the mounting frame (56) through a semi-enclosed shell (61). The stripping mechanism (6) includes a stripping roller (62), a transfer roller (64), a loosening roller (66), a semi-enclosed volute (68), and a loosening blade (69). The stripping roller (62) and the transfer roller (64) are both mounted on the semi-enclosed housing (61) by bearings, and the transfer roller (64) is located to the right of the stripping roller (62); The stripping roller (62) rotates in the opposite direction to the separating roller (51), and a number of stripping barbs (63) are evenly distributed on its outer surface. The stripping barbs (63) are inclined and their inclination direction is consistent with the rotation direction of the stripping roller (62); The transfer roller (64) rotates in the opposite direction to the stripping roller (62), and a number of transfer spikes (65) are evenly distributed on its outer surface. The transfer spike (65) is inclined and its inclination direction is consistent with the rotation direction of the transfer roller (64); The semi-enclosed volute shell (68) is installed on the semi-enclosed outer shell (61) and located to the right of the transfer roller (64), with its right end connected to the negative pressure mechanism (B); The opening roller (66) is installed in a semi-enclosed volute shell (68) by bearings, and its rotation direction is opposite to that of the transfer roller (64). Several opening needles (67) are evenly distributed on its outer surface. The opening needle (67) is vertically set on the outer surface of the opening roller (66); The end of the semi-enclosed volute shell (68) away from the web separation mechanism (5) is connected to the negative pressure mechanism (B); A loosening blade (69) is installed at the bottom of the semi-enclosed volute shell (68), and the loosening blade (69) is vertically positioned directly below the loosening roller (66).

3. The separation device for recycling waste textiles according to claim 2, characterized in that: The semi-enclosed shell (61) is also equipped with a compaction mechanism (8), which cooperates with the separating roller (51) and is located below the stripping roller (62); The compaction mechanism (8) includes a mounting plate (81), a compaction roller (82), a telescopic tube (83), an elastic element (84), and a support rod (85). Mounting plate (81) and support rod (85) are both hinged to semi-enclosed shell (61), and telescopic tube (83) is hinged to mounting plate (81). The telescopic tube (83) is sleeved with the support rod (85) and connected to the support rod (85) through the elastic element (84); The compaction roller (82) is mounted on the mounting plate (81) via a bearing, and the compaction roller (82) is matched with the output end of the web separating mechanism (5).

4. The separation device for recycling waste textiles according to claim 1, characterized in that: The frame (1) is also equipped with a beater mechanism (7); the beater mechanism (7) is located to the right of the cotton stripping roller (57) and cooperates with the output end of the cotton stripping roller (57); The beater mechanism (7) includes a beater roller (71) and a blade (72). The hand roller (71) is mounted on the frame (1) via bearings. The hand roller (71) has a number of blades (72) at equal intervals along its circumference and length.

5. The separation device for recycling waste textiles according to claim 1, characterized in that: The gap between the V-shaped opening (55) and the nearest end of the separating roller (51) is 0.5-5mm; The end of the arc-shaped support plate (53) near the cotton stripping roller (57) is set with a blade-shaped structure, and the gap between it and the separating roller (51) is 1-6mm.

6. The separation device for recycling waste textiles according to claim 1, characterized in that: The feeding mechanism (4) includes a support frame (41) and at least one pair of feeding rollers (44) that cooperate with each other. The support frame (41) is mounted on the frame (1); The at least one pair of feed rollers (44) are mounted on the support frame (41), wherein the upper feed roller (44) is adjustablely mounted on the support frame (41) by means of a spring (43) and a tensioner (42). When the feeding mechanism (4) is provided with two pairs of feeding rollers (44) that cooperate with each other, the feeding mechanism (4) also includes spreading rollers (45) and support rollers (46) that cooperate with each other. The spreading roller (45) and the support roller (46) are both mounted on the frame (1) and positioned between two pairs of feed rollers (44); The spreading roller (45) is adjustablely mounted on the support frame (41) by means of spring (43) and tensioning element (42). Its outer surface is provided with a left-handed strip arm (451) and a right-handed strip arm (452). The ends of the left-handed strip arm (451) and the right-handed strip arm (452) are connected and the connection position is located in the middle of the spreading roller (45). The support roller (46) is mounted on the frame (1).

7. The separation device for recycling waste textiles according to claim 2, characterized in that: The linear velocity ratio of the separating roller (51) and the stripping roller (62) is 1-1.8; The linear velocity ratio of the stripping roller (62) and the transfer roller (64) is 1-1.8; The rotational speed of the opening roller (66) is 600-1400 rpm.

8. The separation device for recycling waste textiles according to claim 1, characterized in that: The angle of inclination of the separating thorn (52) is 10-50°; The inclination angle of the cotton stripping needle (58) is 0-30°; The gap between the cotton stripping roller (57) and the separating roller (51) is 0.3-3mm.

9. A separation device for recycling waste textiles according to claim 2, characterized in that: The tilt angles of the stripping barbs (63) and the transfer barbs (65) are both 0-30°; The stripping barbs (63) and the transfer barbs (65) are arranged alternately or aligned; The opening needles (67) and the transfer needles (65) are arranged alternately; The opening roller (66) is also provided with a number of partitions (610) at equal intervals along its circumference and length, and the partitions (610) are located between two adjacent groups of opening needles (67).

10. A separation device for recycling waste textiles according to claim 8, characterized in that: The bottom of the cotton stripping needle (58) is cylindrical with a diameter of 2-6 mm, and the top is a spike. The height of the cotton stripping needle (58) is 5-20mm.

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