Deep eutectic solvent purification device for raw materials in the production of waste polyester textiles

Abstract

The present invention discloses a device for purifying a deep eutectic solvent used as a raw material for the production of waste polyester textiles, and relates to the technical field of raw material purification. The device comprises a main assembly and a rotating assembly for washing waste polyester bottle flakes. The rotating assembly is provided with a carrying assembly for storing waste polyester bottle flakes, and the main assembly is provided with a discharge assembly for discharging the deep eutectic solvent. In the present invention, since the low-density deep eutectic solvent floats in the upper half and the high-density deep eutectic solvent sinks to the bottom, the first absorption plate and the second absorption plate located in the upper and lower layers of the rotating cylinder, respectively, absorb the low-density deep eutectic solvent and the high-density deep eutectic solvent, thereby achieving a screening and absorption effect on the deep eutectic solvent, while preventing the deep eutectic solvent from overflowing to the periphery of the main cylinder, thereby ensuring the purity of the deep eutectic solvent.

Description

Technical Field

[0001] The invention relates to the technical field of raw material purification, in particular to a device for purifying a deep eutectic solvent of raw materials for production of waste polyester textiles. Background Art

[0002] The raw materials of waste polyester textiles mainly include polyester fiber textiles, auxiliary materials, impurities, adhesives or binders. After recycling and processing, these raw materials can be used to produce new fibers, plastic particles, etc. The purification of the raw materials of waste polyester textiles is mainly used to remove impurities, including dyes, oil stains, additives, impurity fibers, etc., and purification can improve the purity of the recycled polyester and ensure the performance consistency and quality stability of the recycled products. The deep eutectic solvent purification of raw materials refers to the use of deep eutectic as a solvent to purify the raw materials. This process can help remove impurities and obtain purer raw materials. Therefore, the use of deep eutectic solvent for purification is a very important purification method.

[0003] Patent publication number CN110000964A is a composite plastic-paper circulating dissolution and separation equipment. The air inside the feed barrel is heated by a heating plate. When the paper with plastic attached enters the feed barrel, it will be deformed due to the heat, thereby reducing the contact area between the plastic and the paper. After the raw material enters the dissolution box, the paper can be quickly dissolved, thereby improving the working efficiency. The dissolved liquid in the carrying box is input into the dissolution box through the input pipe, and the dissolved liquid in the dissolution box is input into the carrying box through the output pipe, so that the dissolved liquid in the dissolution box can flow continuously, thereby avoiding the accumulation of raw materials in the dissolution box below the feed barrel. At the same time, the pressing plate presses the raw material so that the raw material can completely enter the dissolved liquid, thereby ensuring the dissolution effect of the paper.

[0004] When the above-mentioned and similar technical solutions are used to purify waste polyester bottle flakes, the stains on the waste polyester bottle flakes will gradually diffuse into the entire container during the rinsing process and mix with the deep eutectic solvent. When the content of stains in the deep eutectic solvent is high, it will affect the purification results of the waste polyester bottle flakes and reduce the purification accuracy of the waste polyester bottle flakes. At the same time, due to the different types of impurities on the waste polyester bottle flakes, the stains mixed in the deep eutectic solvent will also be different. When the deep eutectic solvent is recovered, purified and reused, the deep eutectic solvent contains different types of stains. At this time, adopting a fixed distillation temperature is likely to cause side reactions. Summary of the Invention

[0005] The object of the present invention is to provide a deep eutectic solvent purification device for raw materials used in the production of waste polyester textiles, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for purifying a deep eutectic solvent used as a raw material for the production of waste polyester textiles, comprising a main assembly and a rotating assembly for washing waste polyester bottle flakes, wherein the rotating assembly is provided with a carrying assembly for storing waste polyester bottle flakes, the main assembly is provided with a discharge assembly for discharging the deep eutectic solvent, and the rotating assembly is provided with a shaking assembly for accelerating purification and an impact assembly for screening the deep eutectic solvent;

[0007] The main assembly includes a main cylinder and a main shaft arranged in the main cylinder, the rotating assembly includes a rotating cylinder, the rotating cylinder is arranged on the main shaft, the carrying assembly includes a plurality of carrying boxes, the carrying boxes are arranged in the rotating cylinder, a driving motor for driving the rotating cylinder to rotate is provided at the bottom of the main cylinder, a plurality of first through holes are opened on the rotating cylinder, a plurality of second through holes corresponding to the first through holes are opened on the carrying box, and the discharge assembly includes a first absorption plate and a second absorption plate, the first absorption plate and the second absorption plate are respectively arranged above and below the main shaft;

[0008] Deep eutectic solvent is poured into the main cylinder, and the waste polyester bottle flakes that need to be purified are placed in the carrying box. The driving motor drives the rotating cylinder to rotate, and the deep eutectic solvent enters the carrying box through the first through hole and the second through hole to purify the waste polyester bottle flakes. The deep eutectic solvent doped with impurities enters the rotating cylinder through the second through hole. The deep eutectic solvents doped with different impurities have different densities and are located in the upper and lower layers of the rotating cylinder respectively, and are absorbed by the first absorption plate and the second absorption plate respectively.

[0009] Furthermore, a guide plate is provided on the rotating cylinder, which covers the surface of the first through hole respectively. The guide plate is an arc-shaped semi-sealed structure. When the rotating cylinder rotates counterclockwise, the guide plate guides the deep eutectic solvent in the main cylinder into the rotating cylinder to prevent the deep eutectic solvent mixed with impurities from overflowing from the first through hole.

[0010] Furthermore, a first limit ring and a second limit ring are respectively provided in the main cylinder, and the first limit ring and the second limit ring are rotatably connected to the main shaft. A plurality of guide blades are fixedly connected to the top of the main shaft. When the main shaft rotates, the guide blades rotate simultaneously with the main shaft, thereby generating a downward guiding force on the deep eutectic solvent in the main cylinder, thereby preventing the deep eutectic solvent mixed with impurities from overflowing from the top of the carrying box.

[0011] Furthermore, a plurality of top plates are provided on the top of the rotating cylinder, a plurality of card blocks are provided on the top plates, a plurality of card slots adapted to the card blocks are opened on the carrying box, a pull rod is provided on the carrying box, the carrying box is taken and placed by the pull rod, and the carrying box is limited by the card blocks, and the deep eutectic solvent doped with impurities that enters the rotating cylinder through the second through hole is in the adjacent area of the carrying box.

[0012] Furthermore, the impact assembly includes multiple rotating disks, which are arranged at the bottom of the rotating cylinder. The rotating disks are connected to the rotating cylinder by sealed bearings, and impact blades are provided on the rotating disks. The bottoms of the rotating disks are fixedly connected to drive disks, and the bottom of the main cylinder is provided with fixed gear rings. The drive disks are engaged with the fixed gear rings. When the rotating cylinder rotates, the rotating disks rotate simultaneously with the rotating cylinder and rotate on their own under the action of the fixed gear rings, driving the rotating disks to rotate. The impact blades rotate with the rotation of the rotating disks, generating an upward impact force, which impacts the deep eutectic solvent mixed with impurities, and promotes the stratification of the deep eutectic solvent.

[0013] Furthermore, the shaking assembly includes a shaking plate, which is arranged at the bottom of the carrying box, a bottom plate is fixed at the bottom of the carrying box, a return spring is fixedly connected between the bottom plate and the shaking plate, a lifting rod is arranged at the bottom of the shaking plate, the bottom of the lifting rod is arranged as an inclined structure, a fixed plate is arranged at the bottom of the main cylinder, a plurality of guide platforms are arranged on the fixed plate, the tops of the guide platforms are all arranged as inclined structures, and the tops of the guide platforms are all arranged with balls. When the carrying box rotates with the rotation of the rotating cylinder, it will drive the lifting rod to rotate and make the lifting rod contact with the guide platform in turn. Since the bottom of the lifting rod and the top of the guide platform are both arranged as inclined structures, the guide platform will prompt the lifting rod to rise and drive the shaking plate to shake, thereby accelerating the purification of waste polyester bottle flakes, and the balls reduce the wear of the lifting rod and the guide platform.

[0014] Furthermore, a first confluence pipe and a second confluence pipe are provided in the main shaft, the first absorption plate is communicated with the first confluence pipe, the second absorption plate is communicated with the second confluence pipe, a discharge platform is provided on the main cylinder, a connecting pipe is provided on the discharge platform, the connecting pipes are respectively communicated with the first confluence pipe and the second confluence pipe, a discharge head is provided on the discharge platform, the first absorption plate at the top absorbs the deep eutectic solvent doped with impurities with a small density, and the second absorption plate at the bottom absorbs the deep eutectic solvent doped with impurities with a large density, and they are transported to the discharge platform through the first confluence pipe and the second confluence pipe respectively, and are discharged independently through the discharge head.

[0015] Furthermore, a rotating gear disc is provided at the bottom of the main shaft, the drive motor is fixed at the bottom of the fixed plate, and a main gear disc engaged with the rotating gear disc is provided at one end of the output shaft of the drive motor. When the drive motor is started, the main gear disc is driven to rotate, and further drives the rotating gear disc and the main shaft to rotate.

[0016] Furthermore, a feed pipe is provided on the top of the main cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the device for purifying the raw material deep eutectic solvent for producing waste polyester textiles, the deep eutectic solvent at the periphery of the main cylinder enters the carrying box through the first through hole and the second through hole through the rotation of the rotating cylinder, and the deep eutectic solvent that has undergone a purification reaction in the carrying box is poured into the adjacent area of the carrying box. Since the deep eutectic solvents doped with different impurities have different densities, the deep eutectic solvent with a smaller density floats on the upper part, and the deep eutectic solvent with a larger density sinks to the bottom. At this time, the first absorption plate and the second absorption plate located at the upper and lower layers of the rotating cylinder respectively absorb the deep eutectic solvent with a smaller density and the deep eutectic solvent with a larger density, thereby achieving a screening and absorption effect on the deep eutectic solvent, while preventing the deep eutectic solvent from overflowing to the periphery of the main cylinder, thereby ensuring the purity of the deep eutectic solvent.

[0019] At the same time, when the rotating cylinder rotates, the rotating disk is driven to rotate under the action of the fixed gear ring, and the impact blades rotate with the rotation of the rotating disk, generating an upward impact force to impact the deep eutectic solvent mixed with impurities. Under the action of the impact force, the deep eutectic solvent with lower density floats to the upper part at a faster speed, and the intensity of the impact force is low, which will not affect the automatic sinking of the deep eutectic solvent with higher density, thereby promoting the stratification of the deep eutectic solvent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the main cylinder of the present invention;

[0022] Figure 3 This is a schematic diagram of the rotating drum structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the bottom structure of the rotating drum of the present invention;

[0024] Figure 5 A schematic diagram of the structure of the first through hole and the second through hole of the present invention;

[0025] Figure 6 This is a schematic structural diagram of the first absorption plate and the second absorption plate of the present invention;

[0026] Figure 7 It is a schematic structural diagram of the dither component of the present invention;

[0027] Figure 8 Schematic diagram of the structure of the first converging pipe and the second converging pipe of the present invention;

[0028] Figure 9 This is a schematic structural diagram of the fixed gear ring and the drive disc of the present invention;

[0029] Figure 10It is a schematic structural diagram of the main gear disc of the present invention.

[0030] In the figure: 1. Main assembly; 101. Main cylinder; 102. Feed pipe; 103. First limiting ring; 104. Second limiting ring; 105. Main shaft; 2. Discharge assembly; 201. Discharge platform; 202. Discharge head; 203. Connecting pipe; 204. First absorption plate; 205. Second absorption plate; 206. First confluence pipe; 207. Second confluence pipe; 3. Rotating assembly; 301. Rotating cylinder; 302. Guide plate; 303. Top plate; 304. Guide vane; 305 , first through hole; 306, driving motor; 307, main gear disc; 308, rotating gear disc; 4, bearing assembly; 401, bearing box; 402, pull rod; 403, second through hole; 404, bottom plate; 5, shaking assembly; 501, shaking plate; 502, lifting rod; 503, reset spring; 504, fixed plate; 505, guide table; 506, ball; 6, impact assembly; 601, rotating disk; 602, impact blade; 603, fixed gear ring; 604, driving disk. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0032] Deep eutectic solvents are widely used in the purification process of waste PET bottle flakes. However, stains will diffuse into the entire solvent system during the rinsing process and mix with the deep eutectic solvent, thereby affecting the purification effect and the recycling of the deep eutectic solvent. When using deep eutectic solvents to purify waste PET bottle flakes, stains fall off the surface of the bottle flakes and diffuse in the rinsing liquid. When the concentration of stains in the deep eutectic solvent is high, it will interfere with the dissolution, washing and separation process of PET. The stains may interact with PET molecules to form complexes that are difficult to remove, thereby affecting the purity of PET. In particular, some pigments and glue residues are extremely difficult to separate from PET, which will cause the hue and transparency of recycled PET to decrease, reducing its application value. In addition, the stains may reduce the solubility of deep eutectic solvents for PET, prolong the purification time, and increase energy consumption. Secondly, due to the wide source of waste PET bottle flakes and the wide variety of impurities, the deep eutectic solvent contains mixed impurities. The combined stains are also different. Traditional solvent purification methods such as distillation are often difficult to effectively remove all types of stains, especially when the deep eutectic solvent contains multiple complex components. Different types of stains have different thermal stabilities. Some stains may undergo decomposition, polymerization or carbonization reactions at the distillation temperature to produce new impurities, which increases the difficulty of purification. The technical solution provided in the present application is to purify the deep eutectic solvent with waste polyester bottle flakes through a purification reaction. Since the deep eutectic solvents doped with different impurities have different densities, the deep eutectic solvent with lower density will float on the upper part, and the deep eutectic solvent with higher density will sink to the bottom. At this time, the first absorption plate and the second absorption plate at different heights will respectively absorb the deep eutectic solvent with lower density and the deep eutectic solvent with higher density, thereby achieving a screening and absorption effect on the deep eutectic solvent, while preventing the deep eutectic solvent from overflowing to the periphery, thereby ensuring the purity of the deep eutectic solvent.

[0033] Deep eutectic solvent purification device for raw materials of waste polyester textile production, such as Figure 1-10As shown, it includes a main component 1 and a rotating component 3 for washing waste polyester bottle flakes, a carrying component 4 for storing waste polyester bottle flakes is provided in the rotating component 3, a discharge component 2 for discharging deep eutectic solvent is provided on the main component 1, a shaking component 5 for accelerating purification and an impact component 6 for screening deep eutectic solvent are provided on the rotating component 3; the main component 1 includes a main barrel 101 and a main shaft 105 provided in the main barrel 101, the rotating component 3 includes a rotating barrel 301, the rotating barrel 301 is provided on the main shaft 105, the carrying component 4 includes a plurality of carrying boxes 401, the carrying boxes 401 are provided in the rotating barrel 301, a driving motor 306 for driving the rotating barrel 301 to rotate is provided at the bottom of the main barrel 101, a plurality of first through holes 305 are opened on the rotating barrel 301, and the carrying box 40 1 is provided with a plurality of second through holes 403 corresponding to the first through holes 305, and the discharge assembly 2 includes a first absorption plate 204 and a second absorption plate 205, which are respectively arranged above and below the main shaft 105; the main cylinder 101 is filled with a deep eutectic solvent, and the waste polyester bottle flakes to be purified are placed in the carrying box 401, and the driving motor 306 drives the rotating cylinder 301 to rotate, and the deep eutectic solvent enters the carrying box 401 through the first through holes 305 and the second through holes 403 to purify the waste polyester bottle flakes. The deep eutectic solvent doped with impurities enters the rotating cylinder 301 through the second through hole 403. The deep eutectic solvents doped with different impurities have different densities and are located in the upper and lower layers of the rotating cylinder 301, respectively, and are absorbed by the first absorption plate 204 and the second absorption plate 205.

[0034] It should be noted that after the deep eutectic solvent is poured into the main barrel 101, the waste polyester bottle pieces are placed in the carrying box 401, and the carrying box 401 is placed in the rotating barrel 301. The carrying boxes 401 are distributed diagonally, so there will be gaps in the adjacent areas of the carrying boxes 401. Since the main barrel 101 is filled with deep eutectic solvent, and the deep eutectic solvent will purify the waste polyester bottle pieces, at this time, as the rotating barrel 301 rotates, the deep eutectic solvent at the periphery of the main barrel 101 will enter the carrying box 401 through the first through hole 305 and the second through hole 403, and purify the waste polyester bottle pieces that have been purified in the carrying box 401. The deep eutectic solvent generated in the purification reaction is poured into the adjacent area of the carrying box 401. Since the deep eutectic solvents doped with different impurities have different densities, the deep eutectic solvent with a smaller density will float on the upper part, and the deep eutectic solvent with a larger density will sink to the bottom. At this time, the first absorption plate 204 and the second absorption plate 205 located in the upper and lower layers of the rotating cylinder 301 respectively absorb the deep eutectic solvent with a smaller density and the deep eutectic solvent with a larger density, thereby achieving a screening and absorption effect on the deep eutectic solvent, while preventing the deep eutectic solvent from overflowing to the periphery of the main cylinder 101, thereby ensuring the purity of the deep eutectic solvent.

[0035] like Figure 3 and Figure 5 As shown, a guide plate 302 is provided on the rotating cylinder 301, and the guide plates 302 respectively cover the surface of the first through holes 305. The guide plates 302 are an arc-shaped semi-sealed structure. When the rotating cylinder 301 rotates counterclockwise, the guide plates 302 guide the deep eutectic solvent in the main cylinder 101 to be poured into the rotating cylinder 301.

[0036] It should be noted that since the guide plate 302 is an arc-shaped semi-sealed structure with an opening at one end and the top, bottom and other ends are all sealed, when the rotating cylinder 301 rotates counterclockwise, the deep eutectic solvent will enter the first through hole 305 from the opening of the guide plate 302, and the deep eutectic solvent that has produced a purification reaction will be poured into the adjacent area of the carrying box 401 through the second through hole 403, preventing the deep eutectic solvent mixed with impurities from overflowing from the first through hole 305.

[0037] like Figure 2 and Figure 3 As shown, a first limiting ring 103 and a second limiting ring 104 are respectively provided in the main cylinder 101 , and the first limiting ring 103 and the second limiting ring 104 are rotatably connected to the main shaft 105 , and a plurality of guide blades 304 are fixedly connected to the top of the main shaft 105 .

[0038] It should be noted that when the main shaft 105 rotates, the guide blades 304 rotate simultaneously with the main shaft 105. Since the main barrel 101 is filled with deep eutectic solvent, the inclined guide blades 304 will generate a downward guiding force on the deep eutectic solvent in the main barrel 101, and the deep eutectic solvent that has produced a purification reaction will be poured into the adjacent area of the carrying box 401 through the second through hole 403 to prevent the deep eutectic solvent mixed with impurities from overflowing from the top of the carrying box 401.

[0039] like Figure 6 As shown, a plurality of top plates 303 are provided on the top of the rotating cylinder 301 , a plurality of card blocks are provided on the top plates 303 , a plurality of card slots adapted to the card blocks are opened on the carrying box 401 , and a pull rod 402 is provided on the carrying box 401 .

[0040] It should be noted that the carrying box 401 can be pulled out from the rotating cylinder 301 and aligned and limited by the action of the blocking block. The carrying box 401 is taken and placed by the pull rod 402 and limited by the blocking block. The deep eutectic solvent doped with impurities that enters the rotating cylinder 301 through the second through hole 403 is in the adjacent area of the carrying box 401.

[0041] like Figure 4 、 Figure 6 、 Figure 8-Figure 9As shown, the impact assembly 6 includes multiple rotating disks 601, which are arranged at the bottom of the rotating cylinder 301. The rotating disks 601 are connected to the rotating cylinder 301 by sealed bearings. Impact blades 602 are provided on the rotating disks 601. The bottoms of the rotating disks 601 are fixedly connected to drive disks 604. A fixed gear ring 603 is provided at the bottom of the main cylinder 101, and the drive disk 604 is engaged with the fixed gear ring 603.

[0042] It should be noted that when the rotating cylinder 301 rotates, the rotating disk 601 rotates simultaneously with the rotating cylinder 301, and rotates on its own under the action of the fixed gear ring 603, driving the rotating disk 601 to rotate. The impact blade 602 rotates as the rotating disk 601 rotates, generating an upward impact force, which impacts the deep eutectic solvent mixed with impurities. Since the deep eutectic solvents doped with different impurities have different densities, the deep eutectic solvent with a smaller density will float on the upper part, and the deep eutectic solvent with a larger density will sink to the bottom. Therefore, under the action of the impact force, the deep eutectic solvent with a smaller density floats on the upper part at a faster speed, and the intensity of the impact force is relatively low, which will not affect the automatic sinking of the deep eutectic solvent with a larger density, thereby promoting the stratification of the deep eutectic solvent.

[0043] like Figure 7 、 Figure 9-10 As shown, the shaking assembly 5 includes a shaking plate 501, which is arranged at the bottom of the carrying box 401, and a bottom plate 404 is fixed to the bottom of the carrying box 401. A reset spring 503 is fixedly connected between the bottom plate 404 and the shaking plate 501, and a lifting rod 502 is arranged at the bottom of the shaking plate 501. The bottom of the lifting rod 502 is arranged as an inclined structure, and a fixed plate 504 is arranged at the bottom of the main tube 101. A plurality of guide platforms 505 are arranged on the fixed plate 504, and the tops of the guide platforms 505 are all arranged as inclined structures, and the tops of the guide platforms 505 are all provided with balls 506.

[0044] It should be noted that the carrying box 401 will rotate with the rotation of the rotating cylinder 301, and further drive the lifting rod 502 to rotate, and the lifting rod 502 will contact the guide platform 505 in turn when rotating. Since the bottom of the lifting rod 502 and the top of the guide platform 505 are both set to an inclined structure, when the lifting rod 502 contacts the guide platform 505, the extrusion force will cause the guide platform 505 to prompt the lifting rod 502 to rise, and drive the shaking plate 501 to rise. When the lifting rod 502 misses the contact with the guide platform 505, the shaking plate 501 will be pulled down by the action of the return spring 503, so that during the rotation of the rotating cylinder 301, the shaking plate 501 will shake back and forth, accelerating the purification of waste polyester bottle flakes, and the ball 506 reduces the wear of the lifting rod 502 and the guide platform 505.

[0045] like Figure 2 、 Figure 6and Figure 8 As shown, a first confluence pipe 206 and a second confluence pipe 207 are provided in the main shaft 105, the first absorption plate 204 is communicated with the first confluence pipe 206, the second absorption plate 205 is communicated with the second confluence pipe 207, a discharge platform 201 is provided on the main cylinder 101, a connecting pipe 203 is provided on the discharge platform 201, the connecting pipe 203 is respectively communicated with the first confluence pipe 206 and the second confluence pipe 207, and a discharge head 202 is provided on the discharge platform 201.

[0046] It should be noted that since the deep eutectic solvents doped with different impurities have different densities, the deep eutectic solvents with lower density will float on the upper part, and the deep eutectic solvents with higher density will sink to the bottom. Therefore, the first absorption plate 204 at the top will absorb the deep eutectic solvents doped with impurities with lower density, and the second absorption plate 205 at the bottom will absorb the deep eutectic solvents doped with impurities with higher density, and they will be transported to the discharge station 201 through the first confluence pipe 206 and the second confluence pipe 207 respectively, and further discharged independently through the discharge head 202. At this time, the types of pollutants in the discharged deep eutectic solvents are different, and different recovery schemes can be adopted to facilitate recovery.

[0047] like Figure 5 、 Figure 9-10 As shown, a rotating gear disc 308 is provided at the bottom of the main shaft 105 , the driving motor 306 is fixed at the bottom of the fixed plate 504 , and a main gear disc 307 meshing with the rotating gear disc 308 is provided at one end of the output shaft of the driving motor 306 .

[0048] It should be noted that the driving motor 306 starts to drive the main gear plate 307 to rotate, and further drives the rotating gear plate 308 and the main shaft 105 to rotate.

[0049] like Figure 1 As shown, a feed pipe 102 is provided on the top of the main cylinder 101 .

[0050] It should be noted that the deep eutectic solvent can be added to the main barrel 101 through the feed pipe 102, and the main barrel 101 is also provided with a discharge valve, through which the deep eutectic solvent in the main barrel 101 can be thoroughly cleaned, thereby facilitating cleaning of the equipment.

[0051] It should be noted that the deep eutectic solvent can be added to the main barrel 101 through the feed pipe 102. After the deep eutectic solvent is poured into the main barrel 101, the waste polyester bottle flakes are placed in the carrying box 401, and the carrying box 401 is placed in the rotating barrel 301. The deep eutectic solvent will purify the waste polyester bottle flakes, and the driving motor 306 will start to drive the main gear disc 307 to rotate, and further drive the rotating gear disc 308 and the main shaft 105 to rotate. The deep eutectic solvent on the periphery of the main barrel 101 will enter through the first through hole 305 and the second through hole 403. The deep eutectic solvent that has undergone a purification reaction in the carrying box 401 is poured into the adjacent area of the carrying box 401. When the rotating cylinder 301 rotates counterclockwise, the deep eutectic solvent enters the first through-hole 305 from the opening of the guide plate 302 and pours the deep eutectic solvent that has undergone a purification reaction into the adjacent area of the carrying box 401 through the second through-hole 403. The first absorption plate 204 and the second absorption plate 205 located on the upper and lower layers of the rotating cylinder 301 respectively absorb the deep eutectic solvent with a lower density to form a solid solution. and the deep eutectic solvent with higher density are respectively transported to the discharge platform 201 through the first confluence pipe 206 and the second confluence pipe 207, and further discharged independently through the discharge head 202. When the main shaft 105 rotates, the guide blade 304 rotates with the main shaft 105. Since the main cylinder 101 is filled with deep eutectic solvent, the inclined guide blade 304 will generate a downward guiding force on the deep eutectic solvent in the main cylinder 101. When the rotating cylinder 301 rotates, the rotating disk 601 rotates with the rotating cylinder 301 and rotates on the fixed gear ring 603. , which drives the rotating disk 601 to rotate. The impact blade 602 rotates with the rotation of the rotating disk 601, generating an upward impact force to impact the deep eutectic solvent mixed with impurities. The carrying box 401 rotates with the rotation of the rotating cylinder 301, and further drives the lifting rod 502 to rotate. The lifting rod 502 will contact the guide platform 505 in turn during the rotation, and the shaking plate 501 will shake in a reciprocating lifting manner to accelerate the purification of the waste polyester bottle flakes. The ball 506 reduces the wear of the lifting rod 502 and the guide platform 505.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is limited by the accompanying embodiments and their equivalents.

Claims

1. A deep eutectic solvent purification device for the production of waste polyester textiles, comprising a main assembly (1) and a rotating assembly (3) for washing waste polyester bottle flakes, characterized in that: The rotating assembly (3) is provided with a carrying assembly (4) for storing waste polyester bottle flakes, the main assembly (1) is provided with a discharge assembly (2) for discharging deep eutectic solvent, and the rotating assembly (3) is provided with a shaking assembly (5) for accelerating purification and an impact assembly (6) for screening deep eutectic solvent; The main assembly (1) includes a main cylinder (101) and a main shaft (105) arranged in the main cylinder (101); the rotating assembly (3) includes a rotating cylinder (301); the rotating cylinder (301) is arranged on the main shaft (105); the bearing assembly (4) includes a plurality of bearing boxes (401); the bearing boxes (401) are arranged in the rotating cylinder (301); a driving motor (306) for driving the rotating cylinder (301) to rotate is arranged at the bottom of the main cylinder (101); a plurality of first through holes (305) are opened on the rotating cylinder (301); a plurality of second through holes (403) corresponding to the first through holes (305) are opened on the bearing box (401); the discharge assembly (2) includes a first absorption plate (204) and a second absorption plate (205); the first absorption plate (204) and the second absorption plate (205) are respectively arranged above and below the main shaft (105); A deep eutectic solvent is poured into the main cylinder (101), and waste polyester bottle flakes to be purified are placed in a carrying box (401). The driving motor (306) drives the rotating cylinder (301) to rotate, and the deep eutectic solvent enters the carrying box (401) through the first through hole (305) and the second through hole (403) to purify the waste polyester bottle flakes. The deep eutectic solvent doped with impurities enters the rotating cylinder (301) through the second through hole (403). The deep eutectic solvents doped with different impurities have different densities and are located in the upper and lower layers of the rotating cylinder (301), respectively, and are absorbed by the first absorption plate (204) and the second absorption plate (205), respectively.

2. The deep eutectic solvent purification device for raw materials of waste polyester textile production according to claim 1, characterized in that: The rotating cylinder (301) is provided with a guide plate (302), which covers the surface of the first through hole (305) respectively. The guide plate (302) is an arc-shaped semi-sealed structure. When the rotating cylinder (301) rotates counterclockwise, the guide plate (302) guides the deep eutectic solvent in the main cylinder (101) to be poured into the rotating cylinder (301), thereby preventing the deep eutectic solvent mixed with impurities from overflowing from the first through hole (305).

3. The deep eutectic solvent purification device for raw materials of waste polyester textile production according to claim 1, characterized in that: A first limiting ring (103) and a second limiting ring (104) are respectively provided in the main cylinder (101), and the first limiting ring (103) and the second limiting ring (104) are rotatably connected to the main shaft (105). A plurality of guide blades (304) are fixedly connected to the top of the main shaft (105). When the main shaft (105) rotates, the guide blades (304) rotate simultaneously with the main shaft (105), thereby generating a downward guiding force on the deep eutectic solvent in the main cylinder (101), thereby preventing the deep eutectic solvent mixed with impurities from overflowing from the top of the carrying box (401).

4. The deep eutectic solvent purification device for raw materials of waste polyester textile production according to claim 1, characterized in that: The top of the rotating cylinder (301) is provided with a plurality of top plates (303), the top plates (303) are provided with a plurality of card blocks, the carrying box (401) is provided with a plurality of card slots adapted to the card blocks, the carrying box (401) is provided with a pull rod (402), the carrying box (401) is taken and placed by the pull rod (402), the carrying box (401) is limited by the card blocks, and the deep eutectic solvent doped with impurities that enters the rotating cylinder (301) through the second through hole (403) is located in an adjacent area of the carrying box (401).

5. The deep eutectic solvent purification device for raw materials of waste polyester textile production according to claim 1, characterized in that: The impact assembly (6) comprises a plurality of rotating disks (601), the rotating disks (601) being arranged at the bottom of the rotating cylinder (301), the rotating disks (601) being connected to the rotating cylinder (301) via sealed bearings, impact blades (602) being arranged on the rotating disks (601), the bottoms of the rotating disks (601) being fixedly connected to drive disks (604), the bottoms of the main cylinder (101) being provided with fixed gear rings (603), the drive disks (604) being meshed with the fixed gear rings (603), and when the rotating cylinder (301) rotates, the rotating disks (601) rotate simultaneously with the rotating cylinder (301) and rotate on their own under the action of the fixed gear rings (603), driving the rotating disks (601) to rotate, and the impact blades (602) rotate as the rotating disks (601) rotate, generating an upward impact force, impacting the deep eutectic solvent mixed with impurities, and promoting the stratification of the deep eutectic solvent.

6. The deep eutectic solvent purification device for raw materials of waste polyester textile production according to claim 1, characterized in that: The shaking assembly (5) includes a shaking plate (501), the shaking plate (501) is arranged at the bottom of the carrying box (401), a bottom plate (404) is fixed to the bottom of the carrying box (401), a return spring (503) is fixedly connected between the bottom plate (404) and the shaking plate (501), a lifting rod (502) is arranged at the bottom of the shaking plate (501), the bottom of the lifting rod (502) is arranged as an inclined structure, a fixed plate (504) is arranged at the bottom of the main cylinder (101), a plurality of guide platforms (505) are arranged on the fixed plate (504), and the tops of the guide platforms (505) are all arranged as inclined structures. , the top of the guide platform (505) is provided with a ball (506), and when the carrying box (401) rotates with the rotation of the rotating cylinder (301), it will drive the lifting rod (502) to rotate, and make the lifting rod (502) contact with the guide platform (505) in turn. Since the bottom of the lifting rod (502) and the top of the guide platform (505) are both set as inclined structures, the guide platform (505) will cause the lifting rod (502) to rise and drive the shaking plate (501) to shake, thereby accelerating the purification of waste polyester bottle chips. The ball (506) reduces the wear of the lifting rod (502) and the guide platform (505).

7. The deep eutectic solvent purification device for raw materials of waste polyester textile production according to claim 1, characterized in that: The main shaft (105) is provided with a first confluence pipe (206) and a second confluence pipe (207), the first absorption plate (204) is communicated with the first confluence pipe (206), the second absorption plate (205) is communicated with the second confluence pipe (207), the main cylinder (101) is provided with a discharge platform (201), the discharge platform (201) is provided with a connecting pipe (203), the connecting pipe (203) is communicated with the first confluence pipe (206) and the second confluence pipe (207), respectively, the discharge platform (201) is provided with a discharge head (202), the first absorption plate (204) at the top absorbs the deep eutectic solvent doped with impurities with a small density, and the second absorption plate (205) at the bottom absorbs the deep eutectic solvent doped with impurities with a large density, and the solvents are transported to the discharge platform (201) through the first confluence pipe (206) and the second confluence pipe (207), respectively, and are discharged independently through the discharge head (202).

8. The deep eutectic solvent purification device for raw materials of waste polyester textile production according to claim 1, characterized in that: A rotating toothed disc (308) is provided at the bottom of the main shaft (105), a driving motor (306) is fixed to the bottom of the fixed plate (504), and a main toothed disc (307) meshing with the rotating toothed disc (308) is provided at one end of the output shaft of the driving motor (306). When the driving motor (306) is started, the main toothed disc (307) is driven to rotate, and further the rotating toothed disc (308) and the main shaft (105) are driven to rotate.

9. The deep eutectic solvent purification device for raw materials for production of waste polyester textiles according to any one of claims 1 to 8, characterized in that: A feed pipe (102) is provided on the top of the main cylinder (101).

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