Waste Polyester Bottle Chip Recycling and Reusing Textile Production Equipment and Its Preparation Process

Abstract

The present invention discloses a production device and a preparation process for recycled textiles from waste polyester bottle chips, which relates to the technical field of recycling of polyester bottle chips. It includes: screening waste polyester bottle chips to screen them into at least two parts to obtain a screening material set, the screening material set includes at least two screening material items, and the screening material items respectively represent waste polyester bottle chips of different qualities; based on the screening material set, heating them by a melting method to make them melt to obtain a molten material set, the molten material set includes at least two molten material items. The present invention extrudes and sprays the melted waste polyester bottle chips respectively, selects the silk thread with the highest strength in the silk thread combination as the selected silk thread item according to requirements, extrudes and fits the silk threads to make them wind around each other to obtain a composite silk thread, improves the overall structural strength of the composite silk thread, and prevents the problem that the silk threads have uneven quality during spinning due to the incomplete fusion of waste polyester bottle chips of different qualities.

Description

Technical Field

[0001] The present invention relates to the technical field of recycling of polyester bottle chips, and specifically to a production device and a preparation process for recycling waste polyester bottle chips into textiles. Background Art

[0002] Waste polyester bottle chips are polyester plastic products for recycling, such as beverage bottles, cosmetic bottles, etc., which are formed into sheet-like granular materials after being crushed and cleaned. They belong to a kind of recycled plastic and can be repeatedly processed into fibers, films, engineering plastics, etc. The application of waste polyester bottle chips in the textile industry is mainly realized through the production of recycled polyester fibers. After removing the stains and residual liquids on the surface of waste polyester bottle chips, two types of staple fibers and filaments can be obtained through steps such as melt extrusion and wire drawing. The staple fibers can be directly used for spinning, and the filaments are made into yarn cakes through winding equipment.

[0003] A method for cleaning and recycling waste textiles to prepare geotextiles with the patent publication number CN107475901A. The method for recycling waste textiles is carried out in a completely clean and environmentally friendly process, without hydrolysis, and only a very small amount of low-melting-point fibers are melted. The whole process has low energy consumption and no pollution, and has good environmental friendliness. There is no need to separate waste textiles, which simplifies the treatment process. The prepared geotextiles have a controllable thickness, and due to the bonding effect of the melted fibers, the geotextiles have high strength and meet the application requirements. The waste textiles that can be treated have a wide adaptability, and the treatment process is easy to master and can be popularized and applied.

[0004] In the process of melting and extruding waste polyester bottle chips into filaments as described above and in similar technical solutions, due to the different textures of waste polyester bottle chips of different qualities, after melting in the same melting chamber, the molten waste polyester bottle chip liquids will be mixed together, but it is impossible to achieve true complete fusion. At this time, the overall quality of the ejected filaments will be uneven, thus affecting the filament forming effect. At the same time, due to the inconsistent melting points of waste polyester bottle chips of different qualities, when setting a unified melting temperature, more unnecessary energy consumption will be generated during the overall melting process. Summary of the Invention

[0005] The purpose of the present invention is to provide a production device and a preparation process for recycling waste polyester bottle chips into textiles to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A preparation process for recycling waste polyester bottle chips into textiles, including:

[0007] Screening waste polyester bottle chips, screening them into at least two parts to obtain a screening material set, and the screening material set includes at least two screening material items, and the screening material items respectively represent waste polyester bottle chips of different qualities;

[0008] Based on a set of screening materials, heat them by a melting method to make them molten, obtaining a set of molten materials. The set of molten materials includes at least two molten material items, and the molten material items respectively represent molten waste polyester bottle chips of different qualities;

[0009] Based on the set of molten materials, extrude them by an extrusion filament method to make them filamentize, obtaining at least two sets of target filaments. The set of target filaments includes at least one type of target filament item, and the target filament item is used to represent filaments of different diameters;

[0010] Obtain textile requirements to get target requirement items. Based on the target requirement items, screen the set of target filaments to obtain selected filament items and excluded filament items;

[0011] Extrusion-wind the selected filament items by a winding method to obtain composite filament items, and at the same time collect the excluded filament items to obtain collected filament items;

[0012] Strengthen the composite filament items by film coating through an optimization method to obtain strengthened composite items, thus realizing the recycling of waste polyester bottle chips and the production of textiles.

[0013] Furthermore, the target requirement items include diameter requirements. The obtaining methods of the selected filament items and the excluded filament items include:

[0014] Based on the set of target filaments, obtain the diameter data of the set of target filaments to get at least two diameter data sets;

[0015] Set a diameter threshold based on the diameter requirements, and obtain the combined result of the diameter data sets to get a set of combined results;

[0016] Obtain the combinations in the set of combined results where the diameter data does not exceed the diameter threshold to get a set of target combinations;

[0017] Sort the diameter data sets in the order of diameter size to get at least two diameter sorting sets. Select the target diameter sorting set as the main diameter sorting set. Based on the set of target combinations, select the combination with the highest ranking in the main diameter sorting set in the set of target combinations as the calibrated combination set. Based on the calibrated combination set, obtain the target filaments, and then obtain the selected filament items;

[0018] Set the filaments in the set of target filaments except the selected filament items as the excluded filament items.

[0019] Furthermore, the winding method includes:

[0020] Limit the selected filament items, and make the selected filament items approach each other until they are in contact with each other, and at the same time clamp the selected filament items;

[0021] Rotate the selected wire items after clamping so that the selected wire items are wound around each other to obtain wound wire items, and convey the wound wire items while performing adhesion and spraying to obtain composite wire items.

[0022] Furthermore, the optimization method includes:

[0023] Set an auxiliary heating component, obtain finished plastic particles, and heat and melt the finished plastic particles based on the auxiliary heating component to obtain an auxiliary molten item;

[0024] Spray the auxiliary molten item onto the surface of the composite wire item so that a coating film is formed on the surface of the composite wire item, thereby obtaining a strengthened composite item.

[0025] Furthermore, the method for obtaining the screening material set includes:

[0026] Set at least one screening module, and set different screening temperatures for each screening module respectively to obtain a screening module set;

[0027] Based on the screening module set, heat and shake the waste polyester bottle chips to respectively obtain waste polyester bottle chip fluid and waste polyester bottle chip solid, obtaining a first material item and a second material item. The first material item and the second material item are respectively used as screening material items, and thus a screening material set is obtained.

[0028] Furthermore, the melting method includes:

[0029] Based on the screening material items, set initial melting temperatures respectively, obtain the melting states of the screening material items, and obtain melting state items;

[0030] Set a judgment threshold, the judgment threshold is a fluid state threshold, judge whether the melting state item reaches the judgment threshold. When the melting state item reaches the judgment threshold, use the corresponding melting temperature as the reference temperature. When the melting state item does not reach the judgment threshold, set an adjustment threshold to adjust the melting temperature until the melting state item reaches the judgment threshold, and also use the corresponding melting temperature as the reference temperature to obtain a melting temperature set, and melt the screening material items respectively with the melting temperature set.

[0031] Furthermore, the waste polyester bottle chip recycling textile production equipment uses the waste polyester bottle chip recycling textile preparation process described above, including a support assembly. An wire outlet assembly for wire outlet and a blanking assembly for wire winding are arranged on the support assembly. A rotating assembly for driving the blanking assembly to rotate is arranged between the blanking assembly and the support assembly. The support assembly includes a support plate and a support frame fixed to the bottom of the support plate. The rotating assembly includes a toothed ring in contact with the support frame. The blanking assembly includes a plurality of first fixing plates and second fixing plates fixed to the toothed ring. Electric push rods are arranged on the first fixing plates. A rotating cylinder and a third driving motor for driving the rotating cylinder to rotate are arranged at the piston ends of the electric push rods. A battery panel is fixedly connected to the second fixing plate for supplying power to the electric push rods and the third driving motor.

[0032] Furthermore, a limiting ring is fixedly connected to the toothed ring. A limiting groove adapted to the limiting ring is formed on the support frame. A main gear disk meshing with the toothed ring is rotatably arranged on the support frame. A second driving motor for driving the main gear disk to rotate is arranged on the support frame.

[0033] Furthermore, the wire outlet assembly includes a rotating disk. A plurality of docking holes are formed on the rotating disk. Docking heads are fixedly connected to the docking holes. The inner diameters of the inner walls of the docking holes are all different. A wire-down hole is formed on the support plate. A plurality of first driving motors are fixedly connected to the support plate for driving the rotating disk to rotate.

[0034] Furthermore, a plurality of guiding pieces are fixedly connected to the toothed ring. The guiding pieces are all of an inclined structure. The spraying assembly includes a spraying pipe. A spraying head is fixedly connected to the spraying pipe.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0036] The waste polyester bottle chip recycling textile production equipment and its preparation process screen the washed waste polyester bottle chips to obtain a first material item and a second material item. At the same time, the screened first material item and second material item are independently melted according to different temperatures, achieving the effect of energy saving. The melted waste polyester bottle chips are respectively extruded and sprayed into filaments, and the filament with the highest strength in the selected filament combination is selected as the selected filament item according to requirements. The filaments are extruded and bonded and wound to obtain composite filaments, thereby improving the overall structural strength of the composite filaments and preventing the problem of uneven filament quality during filament outlet caused by incomplete fusion of waste polyester bottle chips of different qualities.

[0037] Meanwhile, during the process of bonding and winding the silk threads into a thread and generating a composite silk thread, the finished plastic particles are heated and melted by an auxiliary heating component to obtain an auxiliary molten material, and the auxiliary molten material is sprayed onto the surface of the composite silk thread item, so that a coating film is formed on the surface of the composite silk thread item, and then a strengthened composite item is obtained, thereby making the overall quality of the generated composite silk thread uniform and the wire-forming effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic diagram of the overall process of the present invention;

[0039] Figure 2 is a schematic diagram of the structure of the upper sieve and the lower sieve of the present invention;

[0040] Figure 3 is a schematic diagram of the process for obtaining the target silk thread set of the present invention;

[0041] Figure 4 is a schematic diagram of the process for obtaining the selected silk thread item of the present invention;

[0042] Figure 5 is a schematic diagram of the overall support component of the present invention;

[0043] Figure 6 is a schematic diagram of the structure of the rotating disk of the present invention;

[0044] Figure 7 is a schematic diagram of the overall bottom structure of the support component of the present invention;

[0045] Figure 8 is a schematic diagram of the structure of the guiding piece of the present invention;

[0046] Figure 9 is a schematic diagram of the bottom structure of the blanking component of the present invention.

[0047] In the figure: 1. Support component; 101. Support plate; 102. Support frame; 2. Wire outlet component; 201. Rotating disk; 202. Docking head; 203. First driving motor; 3. Rotating component; 301. Second driving motor; 302. Main gear disk; 303. Tooth ring; 304. Limiting ring; 305. Guiding piece; 4. Spraying component; 401. Spraying pipe; 5. Blanking component; 501. First fixing plate; 502. Second fixing plate; 503. Electric push rod; 504. Rotating cylinder; 505. Third driving motor; 506. Battery panel. DETAILED DESCRIPTION OF THE INVENTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0049] The melt extrusion and filament formation technology is one of the methods to convert it into textiles. However, first of all, the sources of waste PET bottle chips are complex and their use environments are diverse, resulting in uneven quality. Bottle chips of different batches may be degraded to different degrees, contain different types of impurities, and even have significant differences in their molecular weight distributions. When these bottle chips of different qualities are mixed into the same melting chamber for melting, even under high-temperature conditions, it is difficult for the molten PET liquid to achieve complete homogenization. The fundamental reason is that the mutual entanglement and diffusion rate between polymer molecular chains are much lower than those of small-molecule liquids, resulting in microphase separation of the molten PET liquids of different qualities at the microscale, that is, forming microregions with different textures. These microregions will bring serious consequences during the spinning process. Specifically, during the melt spinning process, the molten PET is extruded through the micropores of the spinneret to form filaments. If the texture of the molten material is inhomogeneous, that is, the viscosity is higher in some regions and lower in other regions, then the stretching properties and strength of the ejected filaments will vary significantly at different positions. This difference will lead to uneven overall quality of the filaments, manifested as inconsistent thickness, unstable strength, and even problems such as breakage, ultimately seriously affecting the filament formation effect and reducing the strength, durability, and subsequent processing performance of the obtained filaments. More seriously, this texture heterogeneity will also affect the dyeing performance of the filaments, resulting in uneven dyeing and directly affecting the finished product quality of the textiles. The waste polyester bottle chip recycling and reuse textile preparation process provided in this application screens the washed waste polyester bottle chips to obtain a first material item and a second material item, and independently melts the screened first material item and second material item according to different temperatures, achieving the effect of energy saving. The melted waste polyester bottle chips are respectively subjected to extrusion spinning, and the filament with the highest strength in the filament combination is selected as the selected filament item according to requirements. The filaments are extruded and adhered, and wound to obtain a composite filament, thereby improving the overall structural strength of the composite filament and preventing the problem of uneven quality of the filaments when the waste polyester bottle chips of different qualities cannot be completely fused during filament extrusion. At the same time, during the process of adhering and winding the filaments into a thread to form a composite filament, the finished plastic particles are heated and melted by an auxiliary heating component to obtain an auxiliary melting item, and the auxiliary melting item is sprayed onto the surface of the composite filament item to form a coating on the surface of the composite filament item, thereby obtaining a strengthened composite item, so that the overall quality of the generated composite filament is uniform and the filament formation effect is better, such as Figure 1As shown, it includes steps S100 - S600.

[0050] Step S100: Screen the waste polyester bottle chips and screen them into at least two parts to obtain a set of screened materials.

[0051] It should be noted that the set of screened materials includes at least two screened material items, and the screened material items respectively represent waste polyester bottle chips of different qualities. When screening the waste polyester bottle chips and screening them into two parts, namely the first part and the second part, the set of screened materials obtained at this time consists of two screened material items. The method for obtaining the set of screened materials includes: setting two screening modules, setting different screening temperatures for the two screening modules respectively to obtain a set of screening modules; heating and vibrating the waste polyester bottle chips based on the set of screening modules to respectively obtain waste polyester bottle chip fluid and waste polyester bottle chip solid, obtaining the first material item and the second material item, and using the first material item and the second material item as the screened material items respectively, thereby obtaining the set of screened materials. Embodiment 1

[0052] In a specific implementation process, as Figure 2 shown, the bottle chips recycled by a certain recycling factory have complex sources, including mineral water bottles, cosmetic bottles, etc., with a melting point difference of 10 - 30 °C. Among them, the low - melting - point bottle chips are 240 - 250 °C, and the high - melting - point bottle chips are 260 - 270 °C. Now, it is necessary to screen the two types of bottle chips. Select a DH - 1200 type double - layer vibrating screen, with a diameter of 1200 mm and made of 304 stainless steel. The upper - layer screen is installed with a silicon carbide heating plate with a power of 3 kW. Through the PID temperature control module, the screen surface temperature is stabilized at 150 ± 5 °C. This temperature is close to the softening point of the low - melting - point bottle chips, changing their viscoelasticity and making them more likely to pass through the sieve holes. The lower - layer screen retains the original screening function to intercept the unmelted high - melting - point bottle chips. At this time, the low - melting - point bottle chips are slightly melted on the surface after heating, and their adhesiveness is reduced. Under the vibration effect, they quickly pass through the sieve holes and are collected in the A bin, while the high - melting - point bottle chips remain rigid and slide into the B bin after being intercepted by the sieve, thereby respectively obtaining waste polyester bottle chip fluid and waste polyester bottle chip solid, obtaining the first material item and the second material item.

[0053] Step S200: Based on the set of screened materials, heat and melt them through a melting method to obtain a set of molten materials.

[0054] It should be noted that the molten material set includes at least two molten material items, and the molten material items respectively represent molten waste polyester bottle chips of different qualities. Since the obtained screening material set consists of two screening material items, there are also two molten material items. The melting method includes: based on the screening material items, setting the initial melting temperature respectively, obtaining the melting state of the screening material items, and obtaining the melting state items; setting a judgment threshold, the judgment threshold is the fluid state threshold, judging whether the melting state items reach the judgment threshold. When the melting state items reach the judgment threshold, the corresponding melting temperature is used as the reference temperature. When the melting state items do not reach the judgment threshold, a regulation threshold is set, the regulation threshold is 5 °C, the melting temperature is regulated until the melting state items reach the judgment threshold, and the corresponding melting temperature is also used as the reference temperature, obtaining the melting temperature set, and melting the screening material items respectively with the melting temperature set.

[0055] Step S300: Based on the molten material set, extrude by the method of extrusion spinning to make it spin, and obtain at least two target wire sets.

[0056] It should be noted that as Figure 3 shown, the target wire set includes at least one type of target wire item, and the target wire item is used to represent wires of different diameters. Since the obtained first material item and second material item are melted, there are finally two molten materials, namely the first molten item and the second molten item. These two molten materials are respectively extruded to make them spin, and the extrusion spinning method is extrusion through a spinneret. The spinneret can be composed of a plurality of holes of different sizes. Therefore, when extruding and spinning through the spinneret, different holes are selected as the spinning holes, and the wire diameters obtained are also different, thereby obtaining two target wire sets composed of wires of different diameters.

[0057] Step S400: Obtain the textile requirements to get the target requirement item, and screen the target wire set based on the target requirement item to obtain the selected wire item and the excluded wire item.

[0058] It should be noted that as Figure 4As shown in the figure, the target requirement items include diameter requirements. The methods for obtaining the selected filament items and the excluded filament items are as follows: Based on the target filament set, obtain the diameter data of the target filament set to obtain at least two diameter data sets; Set a diameter threshold based on the diameter requirement, obtain the combined results of the diameter data sets to obtain a combined result set; Obtain the combinations in the combined result set where the diameter data does not exceed the diameter threshold to obtain a target combination set; Sort the diameter data sets in ascending order of diameter to obtain at least two diameter sorted sets. Select the target diameter sorted set as the main diameter sorted set. Based on the target combination set, select the combination with the highest ranking in the main diameter sorted set in the target combination set as the calibration combination set. Obtain the target filament based on the calibration combination set, and then obtain the selected filament items; Set the filaments in the target filament set except for the selected filament items as the excluded filament items. Since the combination with the highest ranking in the main diameter sorted set in the target combination set is used as the calibration combination set, and the selected target diameter sorted set is the combined result of the diameter data sets with high melting points, the higher the ranking of the main diameter sorted set, the higher the strength of the selected filament items. Embodiment 2

[0059] In the specific implementation process, the waste polyester bottle chips recycled by a certain recycling factory need to be used for the production of recycled polyester fibers. The customer's requirement is that the diameter does not exceed 4 mm. After screening the raw materials, that is, waste polyester bottle chips, the first material item and the second material item are obtained and melted to obtain two melts, which are extruded through a spinneret. There are two spinnerets, which are respectively used to extrude the melts of the first material item and the second material item. The first material item is waste polyester bottle chips with a high melting point, and the second material item is waste polyester bottle chips with a low melting point. There are three holes on the first spinneret, with diameters of 1 mm, 2 mm, and 3 mm, respectively marked as A, B, and C. There are also three holes on the second spinneret, with diameters of 1 mm, 2 mm, and 3 mm, respectively marked as a, b, and c, to obtain two diameter data sets. At this time, according to the target requirement items, the diameter needs to be no more than 4 mm. At this time, there are a total of 6 combinations, namely Aa, Ab, Ac, Ba, Bb, and Ca, and then the target combination set is obtained. Immediately sort the diameter data sets in ascending order of diameter to obtain two diameter sorted sets, namely C > B > A and c > b > a. Select the target diameter sorted set as the main diameter sorted set, which is C > B > A. Select the combination with the highest ranking in the main diameter sorted set in the target combination set as the calibration combination set, that is, Ca. Then obtain the target filament based on the calibration combination set, and then obtain the selected filament items, which are C and a respectively.

[0060] Step S500: Extrusion wind the selected filament items by a winding method to obtain composite filament items.

[0061] It should be noted that when extruding and winding the selected silk thread items, the discarded silk thread items are collected simultaneously to obtain the collected silk thread items. The winding method includes: limiting the selected silk thread items and making the selected silk thread items approach each other until they come into contact, and simultaneously clamping the selected silk thread items; rotating the clamped selected silk thread items to make the selected silk thread items wind around each other to obtain the wound silk thread items, conveying the wound silk thread items, and simultaneously performing adhesion and spraying to obtain the composite silk thread items.

[0062] Step S600: Strengthen the film of the composite silk thread items through an optimization method to obtain the strengthened composite items.

[0063] It should be noted that after obtaining the composite silk thread strengthened by film coating, the recycling of waste polyester bottle chips and the production of textiles are realized. The optimization method includes: setting an auxiliary heating component, obtaining finished plastic particles, heating and melting the finished plastic particles based on the auxiliary heating component to obtain the auxiliary molten items; spraying the auxiliary molten items onto the surface of the composite silk thread items to form a film on the surface of the composite silk thread items, thereby obtaining the strengthened composite items.

[0064] As Figures 5 - 9 shown, the waste polyester bottle chip recycling and textile production equipment uses the above-mentioned waste polyester bottle chip recycling and textile preparation process, including a support component 1. An wire outlet component 2 for wire outlet and a blanking component 5 for wire winding are arranged on the support component 1. A rotating component 3 for driving the blanking component 5 to rotate is arranged between the blanking component 5 and the support component 1. The support component 1 includes a support plate 101 and a support frame 102 fixed at the bottom of the support plate 101. The rotating component 3 includes a toothed ring 303, and the toothed ring 303 is in contact with the support frame 102. The blanking component 5 includes a plurality of first fixing plates 501 and second fixing plates 502. The first fixing plates 501 and the second fixing plates 502 are fixed on the toothed ring 303. An electric push rod 503 is arranged on the first fixing plate 501. A rotating cylinder 504 and a third driving motor 505 for driving the rotating cylinder 504 to rotate are arranged at the piston end of the electric push rod 503. A battery panel 506 is fixedly connected to the second fixing plate 502 for supplying power to the electric push rod 503 and the third driving motor 505.

[0065] It should be noted that after the silk thread exits through the wire outlet assembly 2, it will naturally droop. At this time, the electric push rod 503 is activated to drive the rotating cylinder 504 and the third drive motor 505 to move horizontally, and the silk thread is pushed through the rotating cylinder 504, causing the silk threads to approach each other and finally come into contact. At this time, with the activation of the rotating assembly 3, the entire rotating cylinder 504 and the third drive motor 505 can be rotated. Since the two silk threads have come into contact with each other with the contact position of the rotating cylinder 504 as the center of the circle, as the rotating cylinder 504 rotates, the two silk threads will wind around each other, thereby achieving the combined effect of the silk threads. Since the silk thread has a certain temperature after being extruded, the wound silk threads will have a certain bonding effect. When the third drive motor 505 is activated, the wound silk thread can be conveyed downward.

[0066] As Figure 8 shown, a limiting ring 304 is fixedly connected to the gear ring 303, a limiting groove adapted to the limiting ring 304 is formed on the support frame 102, a main gear disk 302 meshing with the gear ring 303 is rotatably arranged on the support frame 102, and a second drive motor 301 for driving the main gear disk 302 to rotate is arranged on the support frame 102.

[0067] It should be noted that when the second drive motor 301 is activated to drive the main gear disk 302 to rotate, and further drive the engaged gear ring 303 to rotate, the stability of the gear ring 303 can be ensured under the action of the limiting ring 304.

[0068] As Figure 6 shown, the wire outlet assembly 2 includes a rotating disk 201, a plurality of docking holes are formed on the rotating disk 201, a docking head 202 is fixedly connected to each docking hole, the inner diameters of the inner walls of the docking holes are different, a wire-down hole is formed on the support plate 101, and a plurality of first drive motors 203 are fixedly connected to the support plate 101, and the first drive motors 203 are used to drive the rotating disk 201 to rotate.

[0069] It should be noted that since the inner diameters of the inner walls of the docking holes are different, when the first drive motor 203 rotates, different-sized docking holes can be aligned with the wire-down hole, and the molten waste polyester bottle chips entering the docking head 202 are extruded through the docking holes under the action of pressure.

[0070] As Figure 8 shown, a plurality of guide pieces 305 are fixedly connected to the gear ring 303, the guide pieces 305 are all inclined structures, and the spraying assembly 4 includes a spraying pipe 401, and a spraying head is fixedly connected to the spraying pipe 401.

[0071] It should be noted that when the toothed ring 303 rotates, the guide pieces 305 with multiple inclined structures will generate a downward air flow to cool the extruded filaments. At the same time, the auxiliary molten material obtained by heating and melting the finished plastic particles by the auxiliary heating assembly will enter the spraying pipe 401, and the auxiliary molten material will be sprayed onto the surface of the composite filament item through the spraying head, so that a coating film is formed on the surface of the composite filament item, and then a strengthened composite item is obtained.

[0072] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended embodiments and their equivalents.

Claims

1. Preparation process of recycled textile from waste polyester bottle chips, including: Screening waste polyester bottle chips, screening them into at least two parts to obtain a screening material set, the screening material set includes at least two screening material items, and the screening material items respectively represent waste polyester bottle chips of different qualities; Based on the screening material set, heating them by melting method to make them melt, obtaining a molten material set, the molten material set includes at least two molten material items, and the molten material items respectively represent molten products of waste polyester bottle chips of different qualities; Based on the molten material set, extruding them by extrusion spinning method to make them spin out, obtaining at least two target filament sets, the target filament set includes at least one type of target filament item, and the target filament item is used to represent filaments of different diameters; It is characterized in that: Obtain textile requirements to get target requirement items, screen the target filament set based on the target requirement items to obtain selected filament items and excluded filament items; Extrusion-wind the selected filament items by winding method to obtain composite filament items, and at the same time collect the excluded filament items to obtain collected filament items; Strengthen the composite filament items by film coating through an optimization method to obtain strengthened composite items, thereby realizing the recycling of waste polyester bottle chips and textile production.

2. The preparation process of the recycled textile from waste polyester bottle chips according to claim 1, wherein: The target requirement items include diameter requirements, and the obtaining methods of the selected filament items and the excluded filament items include: Based on the target filament set, obtain the diameter data of the target filament set to get at least two diameter data sets; Set a diameter threshold based on the diameter requirement, obtain the combined result of the diameter data sets to get a combined result set; Obtain the combinations in the combined result set where the diameter data does not exceed the diameter threshold to get a target combination set; Sort the diameter data sets in the order of diameter size to get at least two diameter sorting sets, select the target diameter sorting set as the main diameter sorting set, based on the target combination set, select the combination with the highest sorting in the main diameter sorting set in the target combination set as the calibrated combination set, and obtain the target filament based on the calibrated combination set, thereby obtaining the selected filament items; Set the filaments in the target filament set except the selected filament items as the excluded filament items.

3. The preparation process of recycled textile from waste PET bottles according to claim 1, characterized in that: The winding method includes: Limit the selected filament items, and make the selected filament items approach each other until they contact each other, and at the same time clamp the selected filament items; Rotate the clamped selected filament items to make the selected filament items wind around each other to obtain wound filament items, convey the wound filament items, and at the same time perform adhesion and spraying to obtain composite filament items.

4. The preparation process of the recycled textile from waste polyester bottle chips according to claim 1, wherein: The optimization method includes: Set an auxiliary heating component, obtain finished plastic particles, heat and melt the finished plastic particles based on the auxiliary heating component to obtain an auxiliary molten item; Spray the auxiliary molten item onto the surface of the composite filament item to form a film on the surface of the composite filament item, thereby obtaining a strengthened composite item.

5. The preparation process of recycled textile from waste polyester bottle chips according to claim 1, characterized in that: The obtaining method of the screening material set includes: Set at least one screening module, and set different screening temperatures for each screening module respectively to obtain a screening module set; Heat and vibrate waste polyester bottle chips based on a screening module set to obtain waste polyester bottle chip fluid and waste polyester bottle chip solid respectively, obtaining a first material item and a second material item. The first material item and the second material item are used as screening material items respectively, and then a screening material set is obtained.

6. The preparation process of recycled textile from waste polyester bottle chips according to claim 1, wherein: The melting method includes: Based on the screening material items, set initial melting temperatures respectively, obtain the melting states of the screening material items, and obtain a melting state item; Set a judgment threshold, where the judgment threshold is a fluid state threshold. Judge whether the melting state item reaches the judgment threshold. When the melting state item reaches the judgment threshold, use the corresponding melting temperature as the reference temperature. When the melting state item does not reach the judgment threshold, set an adjustment threshold to adjust the melting temperature until the melting state item reaches the judgment threshold, and also use the corresponding melting temperature as the reference temperature, obtaining a melting temperature set, and melt the screening material items with the melting temperature set respectively.

7. Recycling and reusing textile production equipment for waste polyester bottle chips, characterized in that: The waste polyester bottle chip recycling textile preparation process described in any one of claims 1-6 is used, including a support assembly (1). An wire outlet assembly (2) for wire outlet and a blanking assembly (5) for wire winding are arranged on the support assembly (1). A rotating assembly (3) for driving the blanking assembly (5) to rotate is arranged between the blanking assembly (5) and the support assembly (1). The support assembly (1) includes a support plate (101) and a support frame (102) fixed to the bottom of the support plate (101). The rotating assembly (3) includes a toothed ring (303), and the toothed ring (303) contacts the support frame (102). The blanking assembly (5) includes a plurality of first fixing plates (501) and second fixing plates (502). The first fixing plates (501) and the second fixing plates (502) are fixed on the toothed ring (303). An electric push rod (503) is arranged on the first fixing plate (501). A rotating cylinder (504) and a third driving motor (505) for driving the rotating cylinder (504) to rotate are arranged at the piston end of the electric push rod (503). A battery panel (506) is fixedly connected to the second fixing plate (502) for supplying power to the electric push rod (503) and the third driving motor (505).

8. The waste polyester bottle chip recycling and reusing textile production equipment according to claim 7, characterized in that: A limiting ring (304) is fixedly connected to the toothed ring (303). A limiting groove adapted to the limiting ring (304) is formed on the support frame (102). A main gear disk (302) meshing with the toothed ring (303) is rotatably arranged on the support frame (102). A second driving motor (301) for driving the main gear disk (302) to rotate is arranged on the support frame (102).

9. The waste polyester bottle chip recycling and reusing textile production equipment according to claim 7, characterized in that: The wire outlet assembly (2) includes a rotating disk (201). A plurality of docking holes are formed on the rotating disk (201). Docking heads (202) are fixedly connected to the docking holes. The inner diameters of the inner walls of the docking holes are all different. A wire passing hole is formed on the support plate (101). A plurality of first driving motors (203) are fixedly connected to the support plate (101). The first driving motors (203) are used to drive the rotating disk (201) to rotate.

10. The waste polyester bottle chip recycling and textile production equipment according to claim 7, characterized in that: A plurality of guide pieces (305) are fixedly connected to the toothed ring (303), the guide pieces (305) are all of an inclined structure, and the spraying assembly (4) includes a spraying pipe (401) to which a spraying head is fixedly connected.

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