A production system for PET waste spinning re-made pellets and RDF pellet re-made process

Abstract

The present invention discloses a production system for remaking PET waste textile pellets and a RDF pellet remaking process, including a double-shaft shredder, a single-shaft shredder, a buffer silo, a pellet machine, a pellet cooler and a baler, wherein the double-shaft shredder is used to crush waste cloth, the single-shaft shredder is used to further crush waste cloth, the buffer silo is used to cache the crushed waste cloth scraps, the pellet machine is used to press and extrude the scraps into pellets, the pellet cooler is used to cool the pellets pressed and extruded by the pellet machine, and the baler is used to pack the cooled pellets. The present invention can crush waste textile fabrics, and by remaking the crushed materials, form RDF pellets of uniform specifications, with the advantages of greater processing capacity, stability and reliability, and simple operation.

Description

Technical Field

[0001] The invention relates to a textile particle production device, and more specifically, to a production system for PET waste spinning remade particle material, and also to an RDF particle remaking process. Background Art

[0002] At present, the main treatment methods for waste fiber products include direct incineration, landfill or sorting and reuse. The toxic gases and fine particles produced by direct incineration will cause secondary pollution; and the landfill method will not only occupy scarce land resources, but also have the possibility of polluting groundwater, which will harm the environment.

[0003] Refuse-derived fuel (RDF) refers to the combustible material obtained by separating the combustible part from the non-combustible part of solid waste through separation processes such as shredding, screening, and airflow sorting. PET waste has a good combustion effect and a high calorific value, and can be used as a good material for waste-derived fuel. During the combustion and use of waste-derived fuel, the pollution generated by combustion can be effectively treated through the exhaust gas treatment equipment in the combustion system, thereby meeting the requirements of waste recycling and environmental protection.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a production system for PET waste spinning re-made granular materials.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A production system for PET waste spinning re-made granular materials, comprising a double-shaft shredder, a single-shaft shredder, a buffer silo, a granulator, a granular cooler and a baler, wherein the double-shaft shredder is used for shredding waste cloth, the single-shaft shredder is used for further shredding waste cloth, the buffer silo is used for caching shredded waste cloth scraps, the granulator is used for pressing and extruding the scraps into granular materials, the granular cooler is used for cooling the granular materials pressed and extruded by the granulator, and the baler is used for baling the cooled granular materials.

[0008] The present invention is further configured to include several groups of dust removal equipment, wherein the dust removal equipment includes a dust suction part, and the dust suction part is used to suck in external airflow for dust removal.

[0009] The present invention is further configured that the particle cooler includes a cooling device, the cooling device includes an outer shell and an inner cylinder, the upper end of the inner cylinder is provided with a feed port, the lower end is provided with a discharge port, the outer periphery of the inner cylinder is provided with a sealing retaining ring, the upper end of the inner cylinder extends out of the outer shell, and an annular negative pressure cavity is formed between the outer shell and the inner cylinder and corresponding to the upper side position of the sealing retaining ring;

[0010] The present invention is further configured such that a ring-shaped screen is formed on the side wall of the inner cylinder at a position corresponding to the negative pressure chamber, the screen connects the inner cylinder and the negative pressure chamber, and a suction port is opened on the outside of the negative pressure chamber, the suction port is used to inhale air outward.

[0011] The present invention is further configured such that a vibrating screen is provided at the lower side of the discharge port, and the vibrating screen is used for vibrating and filtering the particles falling from the discharge port; a plurality of inclined plates are provided inside the inner tube, and each layer of inclined plates is in an upper and lower stacked structure, and the two adjacent layers of inclined plates are staggered and inclined with each other, and the lower side of the inclined plate of the upper layer corresponds to the upper part of the inclined plate of the lower layer.

[0012] The present invention is further configured such that the particle cooler also includes a cyclone dust collector and a negative pressure fan, wherein the negative pressure fan is used to suck air outward from a suction port, and the cyclone dust collector is used to remove dust.

[0013] The present invention is further configured such that the cyclone dust collector and the negative pressure fan are connected via a negative pressure pipe 1, and the cyclone dust collector and the suction port are connected via a pipeline assembly; the pipeline assembly includes a negative pressure pipe 2, and the cyclone dust collector and the suction port are connected via a negative pressure pipe 2.

[0014] The present invention is further configured such that the cyclone dust collector is connected to the negative pressure fan through a negative pressure pipe 1, and the cyclone dust collector is connected to the suction port through a pipeline assembly; the pipeline assembly includes a negative pressure pipe 2, a dust suction pipe 1, a dust suction pipe 2 and an anti-blocking device, the upper side of the anti-blocking device is connected to the entrance end of the cyclone dust collector through the negative pressure pipe 2, the lower side of the anti-blocking device is connected to the dust suction pipe 2, and the dust suction pipe 2 is connected to the suction port through the dust suction pipe 1.

[0015] The present invention is further configured such that the upper half of the second dust suction pipe is in a vertical state, the section of the first dust suction pipe connected to the second dust suction pipe is inclined downward, the lower end of the second dust suction pipe is provided with an extension end, the lower end of the extension end extends to the lower side of the discharge port, and the discharge port and the lower end of the extension end are both located on the upper side of the vibrating screen;

[0016] The present invention is further configured such that the anti-blocking device includes an anti-blocking bin, a lifting plate is provided inside the anti-blocking bin, the lifting plate separates the anti-blocking bin into two upper and lower chambers, the lifting plate is sealingly and slidably connected to the inner side wall of the anti-blocking bin, the lifting plate is provided with a vertically penetrating passage, and a filter screen is installed;

[0017] The present invention is further configured such that the upper end of the second dust suction pipe is connected to the bottom of the anti-blocking bin, and a downwardly contracted structure is formed at the bottom of the anti-blocking bin; the end of the second negative pressure pipe extends from the upper side wall of the anti-blocking bin into the anti-blocking bin;

[0018] The present invention is further configured such that a sealing portion is provided in the middle of the lifting plate, the sealing portion is opposite to the end of the negative pressure tube 2 up and down, and the sealing portion can be sealed and adapted with the end of the negative pressure tube 2; after the lifting plate moves upward, the sealing portion can abut against the end of the negative pressure tube 2 to achieve a pressure seal, and after the lifting plate moves downward, the sealing portion can open the end of the negative pressure tube 2.

[0019] The present invention is further configured such that a through hole is provided in the middle of the sealing portion and passes through the through hole, a blocking cover is provided at the lower side of the through hole, the blocking cover is guided up and down by a guide rod, the blocking cover is connected to the through hole by two tension springs, and the blocking cover and the through hole can be sealed; a support frame is fixedly connected to the lower end of the guide rod, an electromagnet is fixedly connected to the support frame, an electromagnetic adsorption block is fixedly connected to the lower side of the blocking cover, the electromagnet is used for magnetically adsorbing the electromagnetic adsorption block, and can drive the blocking cover to move downward to open the through hole;

[0020] The present invention is further configured as follows: a sliding bar is arranged between the anti-blocking bin and the lifting plate, the sliding bar is vertically shaped up and down, the lower end of the sliding bar extends out of the lower side of the anti-blocking bin, the sliding bar and the anti-blocking bin and the lifting plate all form an upper and lower sealed sliding connection, the outer side of the sliding bar is fixedly connected with a limit block 1 and a limit block 2, the limit block 1 is located on the upper side of the lifting plate, the limit block 2 is located on the lower side of the lifting plate, a gap is formed between the limit block 1 and the limit block 2, the limit block 1 and the lifting plate are elastically connected by a tension spring 1, which is used for elastically supporting the lifting plate; the lower end of the sliding bar is driven up and down by a driving mechanism.

[0021] The present invention also provides an RDF particle remaking process, which uses the above-mentioned production system for remaking PET waste textile particles to remake waste textile fabrics into particles.

[0022] In summary, the present invention has the following beneficial effects:

[0023] By crushing disordered and messy waste textile fabrics into small particles, and then processing them through granulators, RDF granules with basically uniform particle specifications can be obtained, thus realizing the recycling of waste textiles.

[0024] The formed pellets are cooled by a pellet cooler, and the convection of cold air can accelerate the cooling of the pellets to avoid the undesirable situation of adhesion. The cold air convection can also remove dust impurities in the pellets to avoid excessive dust and small particles of impurities, thereby improving the uniformity of the specifications of the pellets. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a production system for PET waste spinning and remaking granules in this embodiment;

[0026] Figure 2 Schematic diagram of the structure of the particle cooler in this embodiment;

[0027] Figure 3 Schematic diagram of the structure of the cooling device in this embodiment;

[0028] Figure 4 Schematic diagram of the structure of the anti-blocking device in this embodiment;

[0029] Figure 5 for Figure 4 A partial enlarged view of the

[0030] Figure 6 is another structural schematic diagram of the particle cooler in this embodiment;

[0031] Reference numerals: double-shaft shredder 1; single-shaft shredder 2; buffer silo 3; pellet machine 4; pellet cooler 5; baler 6; dust removal device 7; dust suction unit 71; cooling device 51; outer shell 511; inner cylinder 512; feed inlet 513; discharge inlet 514; suction inlet 515; screen 516; sealing retainer ring 517; negative pressure chamber 518; inclined plate 519; cyclone dust collector 52; negative pressure fan 53; anti-blocking device 54; air pressure balance pipe 540; anti-blocking bin 541; lifting plate 542; sealing Slide 543; filter 544; sealing part 545; sealing ring 546; sliding rod 547; limit block 1 548; limit block 2 549; tension spring 1 5410; through hole 5411; blocking cover 5413; guide rod 5414; support frame 5415; tension spring 2 5416; electromagnet 5417; electromagnetic adsorption block 5418; vibrating screen 55; negative pressure pipe 1 56; negative pressure pipe 2 57; end 571; dust suction pipe 1 58; dust suction pipe 2 59; extension end 591; rotary feeder 592. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1

[0034] This embodiment discloses a production system for PET waste spinning re-made granules. Figure 1 As shown, it includes a double-shaft shredder 1, a single-shaft shredder 2, a buffer silo 3, a pellet machine 4, a pellet cooler 5 and a baler 6, wherein the double-shaft shredder 1 can shred the waste cloth, the single-shaft shredder 2 can further shred the waste cloth, the buffer silo 3 can buffer the shredded waste cloth scraps, the pellet machine 4 presses and extrude the scraps into pellets, the pellet cooler 5 can cool the pellets pressed and extruded by the pellet machine 4, and the baler 6 can pack the cooled pellets. The various devices can be transported by plate chains or belt conveyors.

[0035] This embodiment also discloses a PET waste spinning particle remaking process, which uses the above-mentioned PET waste spinning remade particle material production system, uses waste spinning fabrics for remaking, remaking into particle materials, and realizes the reuse of waste materials. In the remaking process, the waste materials are first sorted, and the sorted fabrics are transported by plate chains, and first sent to the double-axis shredder 1 for crushing, so that the waste materials are formed into more regular fragments, and then the fragments are further shredded by the single-axis shredder 2, and filtered through a screen to obtain fragments of the required particle size; then, the filtered fragments are put into the buffer silo 3 to achieve the caching of waste particles, thereby ensuring that the subsequent remaking process can have a stable and sufficient supply of materials.

[0036] Then, the crushed material can be formed into granules of the required size by the pelletizer 4. The pelletizer 4 can soften the crushed material by active heating or friction heating with a heat source, extrude and cut it from the mold, and then realize the forming of the granules. For example, during friction heating forming, in the pressing chamber, the crushed material is softened by the heat generated by friction extrusion through the relative movement of the pressing roller and the ring die, and the soft material is extruded and pressed through the ring die hole to form granules. The granules are roughly cylindrical in structure, and then the cylindrical material is cut into approximately 10 mm in diameter and 20 mm in height by the rotation of the outer scraper of the ring die.

[0037] Then, the pellets are sent to the pellet cooler 5 through the conveyor. The pellet cooler 5 can inhale air to ventilate and cool the pellets. It can also remove dust from the pellets and small particles.

[0038] Then, after the material is screened by the vibrating screen, it is conveyed to the finished product bin by a belt, and the material in the finished product bin is packaged by a packaging machine 6 to obtain a strip-shaped finished product.

[0039] In order to remove iron from material particles, iron-discharging equipment can be installed on multiple conveying equipment to remove impurity iron in the material to facilitate subsequent production processes.

[0040] There is a drop in the material level at the material conveying path, which may generate dust. Therefore, the particle re-production system also includes several groups of dust removal equipment 7. The dust removal equipment 7 includes a dust suction part 71. The dust suction part 71 is a negative pressure suction end, which can suck in the external airflow for dust removal, thereby reducing the dust pollution in the workshop. The number and installation position of the dust removal equipment 7 can be specifically set according to the dust situation.

[0041] Embodiment 2

[0042] This embodiment discloses a production system for PET waste spinning re-made granules. Figure 2 , describe in detail.

[0043] The particle cooler 5 includes a cooling device 51, which includes an outer shell 511 and an inner cylinder 512. The outer shell 511 and the inner cylinder 512 are in an inner-outer-outer structure, and a feed inlet 513 is provided at the upper end of the inner cylinder 512, and a discharge inlet 514 is provided at the lower end. The upper end of the inner cylinder 512 extends out of the outer shell 511.

[0044] The outer end of the outer shell 511 gradually narrows and is sealed to the outer periphery of the inner cylinder 512. A sealing ring 517 is provided on the outer periphery of the inner cylinder 512. An annular negative pressure chamber 518 is formed between the outer shell 511 and the inner cylinder 512 and corresponding to the upper side of the sealing ring 517.

[0045] An annular screen 516 is formed on the side wall of the inner cylinder 512 at a position corresponding to the negative pressure chamber 518, and the screen 516 connects the inner cylinder 512 and the negative pressure chamber 518. A suction port 515 is provided on the outside of the negative pressure chamber 518. The profile of the screen 516 is a conical structure, and the diameter of the profile gradually expands from top to bottom. The expanded structure is conducive to the falling of the granular material, and reduces the collision between the granular material and the screen 516 and the clogging of the screen 516.

[0046] By suctioning air under negative pressure at the suction port 515 , an airflow from the lower net can be formed in the inner cavity of the inner cylinder 512 , and air with relatively low external temperature can be sucked in from the discharge port 514 at the bottom of the inner cylinder 512 , and flow from bottom to top along the inner cylinder 512 , forming an up and down convection with the falling granular material, thereby cooling the granular material, and the dust impurities mixed therein will be carried by the upward airflow into the negative pressure chamber 518 and discharged from the suction port 515 .

[0047] Reference Figure 2 As shown, the particle cooler 5 also includes a cyclone dust collector 52 and a negative pressure fan 53. The negative pressure fan 53 can suck air outward when working to form a negative pressure source. The cyclone dust collector 52 is installed between the cooling device 51 and the negative pressure fan 53, and can remove dust from the air flowing through to prevent dust particles from entering the negative pressure fan 53 and causing damage; in addition, the cyclone dust collector 52 can also remove dust mixed in the air, and then the collected dust impurities can be recycled.

[0048] The cyclone dust collector 52 is connected to the negative pressure fan 53 through a negative pressure pipe 56, and the cyclone dust collector 52 is connected to the suction port 515 through a pipeline assembly. After the air enters the cyclone dust collector 52, it is processed by swirl flow to separate the dust particles and air from each other, thereby achieving impurity removal.

[0049] Specifically, the pipeline assembly includes a negative pressure pipe 57, and the cyclone dust collector 52 and the suction port 515 are interconnected through the negative pressure pipe 57. The air discharged from the suction port 515 can directly enter the cyclone dust collector 52 through the negative pressure pipe 57, and undergo cyclone dust removal by the cyclone dust collector 52. After the cyclone dust removal, a certain amount of dust particles will be accumulated at the bottom of the cyclone dust collector 52.

[0050] Alternatively, the pipeline assembly may also adopt a structure in which multiple pipelines are combined and arranged with each other, and the pipeline assembly includes negative pressure pipe 2 57, dust suction pipe 1 58, dust suction pipe 2 59 and anti-blocking device 54. The anti-blocking device 54 is installed between the cyclone dust collector 52 and the suction port 515, and a dust removal structure can be pre-arranged before the cyclone dust collector 52, which can reduce the pressure of cyclone dust removal and avoid the problem of excessive accumulation of materials at the bottom of the cyclone dust removal equipment causing blockage and poor dust removal effect.

[0051] In the process of negative pressure dust removal of the cooling device 51, a large number of particulates may have a small particle size and are not effectively processed and formed by the particle machine, so that the particles put into the cooling device 51 contain a large number of small particle impurities. In the cooling and dust removal process, a large number of impurities will be directly sucked in by the negative pressure and discharged from the suction port 515. If a large number of impurities are directly sucked into the cyclone dust collector 52, it may cause excessive dust deposition at the bottom of the cyclone dust collector 52, leading to a warehouse explosion, and then the cyclone separation process will not be effectively achieved, and the negative pressure fan 53 and some connecting pipes of the cyclone dust collector 52 will be blocked, resulting in equipment damage.

[0052] Reference Figure 4As shown, the upper side of the anti-blocking device 54 is connected to the inlet end of the cyclone dust collector 52 through the negative pressure pipe 57, and the lower side of the anti-blocking device 54 is connected to the dust suction pipe 59, and the dust suction pipe 59 is connected to the suction port 515 through the dust suction pipe 58.

[0053] The anti-blocking device 54 includes an anti-blocking bin 541, and a lifting plate 542 is arranged inside the anti-blocking bin 541. The lifting plate 542 divides the anti-blocking bin 541 into two upper and lower chambers. A sealing slide 543 is arranged on the inner wall of the anti-blocking bin 541. The lifting plate 542 slides in a sealing manner with the inner wall of the anti-blocking bin 541. The lifting plate 542 can be adjusted up and down in the anti-blocking bin 541, and the surrounding joints can maintain a basic sealing state.

[0054] The lifting plate 542 is provided with a passage which passes through from top to bottom and is installed with a filter screen 544 . The filter screen 544 can be used for blocking filtration and dust removal of the circulating air, thereby blocking most of the impurities in the lower chamber of the anti-blocking bin 541 .

[0055] The upper end of the second dust suction pipe 59 is connected to the bottom of the anti-blocking bin 541, and a downwardly contracted structure is formed at the bottom of the anti-blocking bin 541. The upper end of the second dust suction pipe 59 is connected to the smallest end position of the bottom of the anti-blocking bin 541. In the anti-blocking bin 541, the separated particles and dust blocked by the filter 544 can fall by gravity through the conical contracted structure and then fall back.

[0056] The end of the second negative pressure tube 57 extends from the upper side wall of the anti-blocking bin 541 into the anti-blocking bin 541. A sealing portion 545 is provided in the middle of the lifting plate 542. The sealing portion 545 is opposite to the end of the second negative pressure tube 57 up and down, and the sealing portion 545 can be sealed and adapted with the end 571 of the second negative pressure tube 57. An annular depression is formed on the upper side of the sealing portion 545, and a sealing ring 546 is installed at the corresponding position of the sealing portion 545, and the sealing ring 546 can achieve sealing between the two.

[0057] After the lifting plate 542 moves upward, the sealing part 545 can abut against the end 571 of the negative pressure tube 57 to achieve a pressure seal; after the lifting plate 542 moves downward, the sealing part 545 can open the end 571 of the negative pressure tube 57, thereby achieving normal air adsorption and filtration processing.

[0058] When a large amount of dust material is sucked in, the dust material may clog the filter 544, causing the filter 544 to be unable to pass air smoothly. When the filter 544 is clogged to a certain extent, a large pressure difference will be formed between the upper and lower sides of the lifting plate 542 in the anti-blocking bin 541. The air pressure on the upper side of the lifting plate 542 is relatively small. Under the action of the upper and lower pressure difference, the lifting plate 542 will be driven to move upward. After the lifting plate 542 rises, the sealing portion 545 of the lifting plate 542 will close the end of the negative pressure pipe 2 57, cut off the negative pressure pipeline, temporarily stop the negative pressure dust removal process, and thus prevent a large amount of particulate impurities from being sucked into the anti-blocking bin 541 and subsequent equipment, prevent the equipment from being deformed due to excessive pressure, and can protect the equipment.

[0059] Furthermore, a through hole 5411 is provided in the middle of the sealing portion 545, and a stopper 5413 is provided at the lower side of the through hole 5411. A guide rod 5414 is fixedly connected to the lower side of the sealing portion 545, and the stopper 5413 slides up and down through the guide rod 5414. The stopper 5413 is connected to the through hole 5411 through a second tension spring 5416, and an upward pulling force can be formed on the stopper through the second tension spring 5416, so that the stopper 5413 and the through hole 5411 can be sealed, and the through hole 5411 can be maintained in a normally closed state.

[0060] A support frame 5415 is fixedly connected to the lower end of the guide rod 5414, and an electromagnet 5417 is fixedly connected to the support frame 5415. An electromagnetic adsorption block 5418 is fixedly connected to the lower side of the blocking cover 5413. The electromagnet 5417 is used to magnetically adsorb the electromagnetic adsorption block 5418, and can drive the blocking cover 5413 to move downward to open the through hole 5411. In addition, an air pressure balance pipe 540 is connected to the upper side wall of the anti-blocking bin 541, one end of the air pressure balance pipe 540 is connected to the upper chamber in the anti-blocking bin 541, and the other end is connected to the dust suction pipe 1 58, and a valve is installed at the air pressure balance pipe 540.

[0061] When the filter screen 544 of the lifting plate 542 is completely blocked, the lifting plate 542 will move upward to block the negative pressure pipe 2 57; the electromagnet 5417 works, and the electromagnet 5417 absorbs the electromagnetic absorption block 5418, which can drive the blocking cover 5413 to descend, thereby opening the through hole 5411. The dust suction pipe 2 59 is cut off through the valve installed at the dust suction pipe 2 59, and the air pressure balance pipe 540 is opened through the valve.

[0062] At this time, the negative pressure source formed at the negative pressure pipe 57 will be connected to the chamber on the lower side of the anti-blocking bin 541 through the through hole 5411, and the air will be sucked from the air pressure balance pipe 540 into the chamber on the upper side of the anti-blocking bin 541. At the filter 544, an airflow from bottom to top can be formed, and then the particle impurities blocking the surface of the filter 544 can be blown off, so as to achieve reverse cleaning of the filter 544. Then, the device is switched back to the original state, the air pressure balance pipe 540 is closed, the dust suction pipe 59 is opened, and the electromagnet 5417 will also be powered off. The baffle 5413 will rise and close the through hole under the action of the tension spring, and the filter 544 at the lifting plate 542 can be ventilated and filtered smoothly. The lifting plate 542 will also descend, and the particles passing through the cooling device 51 will continue to be dusted and cooled through negative pressure suction.

[0063] Furthermore, a slide bar 547 is provided between the anti-blocking bin 541 and the lifting plate 542. The slide bar 547 is vertically arranged, and the lower end of the slide bar 547 extends out of the lower side of the anti-blocking bin 541. The position and movement of the lifting plate 542 can be controlled in linkage through the slide bar 547.

[0064] The sliding rod 547, the anti-blocking bin 541, and the lifting plate 542 are all sealed and slidably connected up and down, and can slide up and down smoothly, and can maintain a relatively sealed state. The outer side of the sliding rod 547 is fixedly connected with a limit block 1 548 and a limit block 2 549. The limit block 1 548 is located on the upper side of the lifting plate 542, and the limit block 2 549 is located on the lower side of the lifting plate 542. A large distance is formed between the limit block 1 548 and the limit block 2 549, and the lower end of the sliding rod 547 is driven up and down by a driving mechanism. The driving mechanism can drive the sliding rod 547 to actively move up and down, thereby realizing active adjustment of the lifting plate 542.

[0065] The limit block 1 548 and the lifting plate 542 are elastically connected by a tension spring 1 5410, and the lifting plate 542 can be elastically maintained by the tension spring 1 5410, and the lifting plate 542 can be basically kept stable, and the lifting plate 542 has a certain movable space relative to the slide bar 547. In addition, the tension spring 1 5410 can also support the weight of the lifting plate 542 to a certain extent, so that the lifting plate 542 can be lifted and floated more easily, so as to maintain the movement stability and flexibility of the lifting plate 542.

[0066] Reference Figure 2 As shown, a vibrating screen 55 is provided at the lower side of the discharge port 514 , and the vibrating screen 55 can filter the particles falling from the discharge port 514 by vibration, and then output the particles meeting the requirements to the subsequent conveying equipment.

[0067] Furthermore, the upper half of the dust suction pipe 59 is vertically vertical, and the section of the dust suction pipe 1 58 connected to the dust suction pipe 2 59 is tilted downward. The tilted structure allows the material in the dust suction pipe 1 58 to enter the dust suction pipe 2 59 more smoothly. An extension end 591 is provided at the lower end of the dust suction pipe 2 59, and a rotary feeder 592 is installed on the pipeline of the extension end 591. The rotary feeder 592 can collect materials and temporarily store dust particles in the rotary feeder 592. The interior of the rotary feeder 592 is divided into multiple grids by the paddle wheel, and the dust material can be temporarily stored in the space between the paddles; when the material accumulates to a certain extent, the dust material can be discharged downward from the rotary feeder 592 and discharged along the extension end 591 by rotating the impeller.

[0068] The lower end of the extension end 591 extends to the lower side of the discharge port 514, and the lower ends of the discharge port 514 and the extension end 591 are both located on the upper side of the vibrating screen 55, so that the discharged dust material can also be returned to the vibrating screen 55 for final screening through the vibrating screen 55, thereby avoiding the suction of materials that meet the particle requirements during the dust removal process, thereby causing unnecessary waste.

[0069] Several inclined plates 519 are installed inside the inner cylinder 512. Each layer of inclined plates 519 is stacked up and down, and two adjacent layers of inclined plates 519 are staggered and tilted. The lower side of the upper inclined plate 519 corresponds to the upper part of the lower inclined plate 519. The mutually staggered inclined plates 519 can extend the length of the falling path of the particles, which is beneficial to the cooling of the particles. In order to achieve air circulation, several holes are opened on the surface of the inclined plates 519. The size of the holes should be smaller than the size of the particles to prevent the particles from falling directly from the holes of the inclined plates 519. The holes play a role of ventilation, so that the air can flow smoothly in the inner cylinder 512.

[0070] Embodiment 3

[0071] This embodiment discloses a production system for PET waste spinning re-made granules. Figure 6 , describe in detail.

[0072] Compared with the second embodiment, the anti-blocking device 54 is removed in this embodiment, and the second negative pressure pipe 57 and the second dust suction pipe 59 are directly connected, and the second dust suction pipe 59 is in a vertically facing structure, and the granular material and impurities will form a bottom-up movement when entering the second dust suction pipe 59. During the circulation process, the dust material with smaller particles can keep moving upward and then enter the cyclone dust collector 52.

[0073] The mixed granular materials in the second dust suction pipe 59 cannot overcome gravity and continue to move upwards, and will fall along the extension end 591 of the second dust suction pipe 59, fall into the rotary feeder 592 for temporary storage, and then continue to fall back from the extension end 591 as needed.

[0074] Furthermore, the dust suction pipe 1 58 is of an inclined structure, which slopes downward toward one end of the dust suction pipe 2 59 , thereby preventing the granular material from falling back into the dust suction pipe 1 58 during the process of falling in the dust suction pipe 2 59 and causing unnecessary congestion.

[0075] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A production system for PET waste spinning and remaking granules, characterized in that: The invention comprises a double-shaft shredder (1), a single-shaft shredder (2), a buffer silo (3), a pellet machine (4), a pellet cooler (5) and a baler (6), wherein the double-shaft shredder (1) is used to shred the waste cloth, the single-shaft shredder (2) is used to further shred the waste cloth, the buffer silo (3) is used to buffer the shredded waste cloth, the pellet machine (4) is used to press and extrude the shredded waste cloth into pellets, the pellet cooler (5) is used to cool the pellets pressed and extruded by the pellet machine (4), and the baler (6) is used to pack the cooled pellets; Also included are several groups of dust removal equipment (7), wherein the dust removal equipment (7) comprises a dust suction part (71), and the dust suction part (71) is used to suck in external airflow for dust removal; The particle cooler (5) comprises a cooling device (51), the cooling device (51) comprises an outer shell (511) and an inner cylinder (512), the upper end of the inner cylinder (512) is provided with a feed port (513), the lower end of the inner cylinder (512) is provided with a discharge port (514), the outer periphery of the inner cylinder (512) is provided with a sealing retaining ring (517), the upper end of the inner cylinder (512) extends out of the outer shell (511), and an annular negative pressure chamber (518) is formed between the outer shell (511) and the inner cylinder (512) and corresponding to the upper side position of the sealing retaining ring (517); An annular screen (516) is formed on the side wall of the inner cylinder (512) at a position corresponding to the negative pressure chamber (518), the screen (516) is connected to the inner cylinder (512) and the negative pressure chamber (518), and a suction port (515) is provided on the outside of the negative pressure chamber (518), and the suction port (515) is used to inhale air outward; A vibrating screen (55) is arranged at the lower side of the discharge port (514), and the vibrating screen (55) is used for vibrating and filtering particles falling from the discharge port (514); a plurality of inclined plates (519) are arranged inside the inner cylinder (512), and each layer of inclined plates (519) is in an up-and-down stacked structure, and two adjacent layers of inclined plates (519) are staggered and tilted with respect to each other, and the lower side of the upper layer of inclined plates (519) corresponds to the upper part of the lower layer of inclined plates (519); The particle cooler (5) further comprises a cyclone dust collector (52) and a negative pressure fan (53), wherein the negative pressure fan (53) is used to suck air outward from the suction port (515), and the cyclone dust collector (52) is used to remove dust; The cyclone dust collector (52) and the negative pressure fan (53) are connected via a negative pressure pipe 1 (56), and the cyclone dust collector (52) and the suction port (515) are connected via a pipeline assembly; the pipeline assembly comprises a negative pressure pipe 2 (57), a dust suction pipe 1 (58), a dust suction pipe 2 (59) and an anti-blocking device (54); the upper side of the anti-blocking device (54) is connected to the inlet end of the cyclone dust collector (52) via the negative pressure pipe 2 (57), the lower side of the anti-blocking device (54) is connected to the dust suction pipe 2 (59), and the dust suction pipe 2 (59) is connected to the suction port (515) via the dust suction pipe 1 (58).

2. A production system for PET waste spinning and remaking granules according to claim 1, characterized in that: The upper half of the second dust suction pipe (59) is in a vertical state, and the section of the first dust suction pipe (58) connected to the second dust suction pipe (59) is inclined downward. The lower end of the second dust suction pipe (59) is provided with an extension end (591), and the lower end of the extension end (591) extends to the lower side of the discharge port (514). The lower ends of the discharge port (514) and the extension end (591) are both located on the upper side of the vibrating screen (55); The anti-blocking device (54) comprises an anti-blocking bin (541), a lifting plate (542) is arranged inside the anti-blocking bin (541), the lifting plate (542) divides the anti-blocking bin (541) into two upper and lower chambers, the lifting plate (542) is sealingly and slidably connected to the inner side wall of the anti-blocking bin (541), the lifting plate (542) is provided with a vertically penetrating passage, and a filter screen (544) is installed thereon; The upper end of the second dust suction pipe (59) is connected to the bottom of the anti-blocking bin (541), and a downwardly contracted structure is formed at the bottom of the anti-blocking bin (541); the end of the second negative pressure pipe (57) extends from the upper side wall of the anti-blocking bin (541) into the anti-blocking bin (541); A sealing portion (545) is provided in the middle of the lifting plate (542), and the sealing portion (545) is opposite to the end of the second negative pressure tube (57) in vertical relation, and the sealing portion (545) can be sealed and adapted with the end (571) of the second negative pressure tube (57); after the lifting plate (542) moves upward, the sealing portion (545) can abut against the end (571) of the second negative pressure tube (57) to achieve a pressure seal, and after the lifting plate (542) moves downward, the sealing portion (545) can open the end (571) of the second negative pressure tube (57).

3. The production system of PET waste spinning and remaking granules according to claim 2, characterized in that: A through hole (5411) is provided in the middle of the sealing portion (545) and passes through the through hole (5411) from top to bottom. A blocking cover (5413) is provided on the lower side of the through hole (5411). The blocking cover (5413) is guided to slide up and down by a guide rod (5414). The blocking cover (5413) is connected to the through hole (5411) by a second tension spring (5416), so that the blocking cover (5413) and the through hole (5411) can be sealed. A support frame (5415) is fixedly connected to the lower end of the guide rod (5414). An electromagnet (5417) is fixedly connected to the support frame (5415). An electromagnetic adsorption block (5418) is fixedly connected to the lower side of the blocking cover (5413). The electromagnet (5417) is used for magnetically adsorbing the electromagnetic adsorption block (5418), so as to drive the blocking cover (5413) to move downward to open the through hole (5411). A sliding rod (547) is provided between the anti-blocking bin (541) and the lifting plate (542). The sliding rod (547) is vertically vertical, and the lower end of the sliding rod (547) extends out of the lower side of the anti-blocking bin (541). The sliding rod (547) forms an upper and lower sealed sliding connection with the anti-blocking bin (541) and the lifting plate (542). The outer side of the sliding rod (547) is fixedly connected to a limiting block 1 (548) and a limiting block 2 (549). The first limit block (548) is located on the upper side of the lifting plate (542), and the second limit block (549) is located on the lower side of the lifting plate (542). A gap is formed between the first limit block (548) and the second limit block (549). The first limit block (548) and the lifting plate (542) are elastically connected via a tension spring (5410) for elastically supporting the lifting plate (542). The lower end of the slide rod (547) is driven up and down by a driving mechanism.

4. A RDF particle remaking process, characterized in that: The waste textile fabric is remade into pellets by using the production system for remaking PET waste textile pellets as described in any one of claims 1 to 3.

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