Recycling process of waste plastics and ore bottles

Abstract

The invention relates to the technical field of plastic recycling, in particular to a recycling process of waste plastic and ore bottles, and solves the problems that in the existing plastic bottle recycling process, cleaning is insufficient, impurity residues are easily caused, cleaning liquid is inconvenient to fully utilize, and the plastic bottles are directly crushed, so that the crushing quality is poor. Comprising the following steps that S1, waste plastic bottles are recycled and packaged in a manual or mechanical mode and then transported, transferred and stored through a vehicle, when the plastic bottles need to be reused, packages of the plastic bottles are disassembled and classified, and metal pieces doped in the plastic bottles are removed; and S2, after impurity removal, a feeding conveyor is used for conveying and feeding the plastic bottles. According to the plastic bottle recycling device, plastic bottles are fully cleaned and compressed in the recycling process, the purity of recycled plastic particles can be effectively improved, cleaning liquid can be fully recycled conveniently, and the smashing quality of the plastic bottles can be improved conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of plastic recycling, in particular to a recycling and regeneration process of waste plastics and mineral bottles. Background Art

[0002] With the development of industry, the application of plastic products has spread to all areas of industry, agriculture and daily life. The natural degradation time of ordinary plastic waste is very long, and a large amount of harmful substances such as methane will be produced during the degradation process. Therefore, the landfill method has been criticized by many experts; and the harmful gases and smoke produced by the incineration method directly affect the environment. At the same time, since plastic is a petrochemical product, its main raw material for production is petroleum, which is a non-renewable resource. Therefore, recycling plastic products is currently the best way to solve the problem of plastic waste. It effectively solves the threat of plastic products to the environment. At present, portable beverages such as bottled mineral water are becoming more and more popular because of their convenience, cleanliness and hygiene. As a result, a large number of discarded plastic bottles are produced. In order to recycle these discarded plastic bottles, they need to be crushed, cleaned, and separated from impurities.

[0003] In the existing recycling process of plastic bottles, insufficient cleaning easily leads to residual impurities, making it difficult to fully utilize the cleaning solution, and direct crushing of the plastic bottles results in poor crushing quality; therefore, it does not meet existing needs. We have proposed a recycling and reuse process for waste plastics and mineral bottles. Summary of the invention

[0004] The purpose of the present invention is to provide a recycling and reuse process for waste plastics and mineral bottles, so as to solve the problems in the existing plastic bottle recycling process proposed in the above background technology, such as insufficient cleaning, easy to cause impurities to remain, inconvenient to fully utilize the cleaning liquid, and direct crushing of the plastic bottles, resulting in poor crushing quality.

[0005] To achieve the above object, the present invention provides the following technical solution: a process for recycling and reusing waste plastics and mineral bottles, comprising the following steps:

[0006] S1: Recycle and package discarded plastic bottles manually or mechanically, and then use vehicles to transport, transfer and store them. When the plastic bottles need to be reused, the packaging of the plastic bottles is disassembled and classified, and the metal parts mixed in the plastic bottles are removed;

[0007] S2: After impurities are removed, the plastic bottles are transported and loaded using a feeding conveyor, and the plastic bottles are stirred and pre-cleaned using a circulating cleaning mechanism, which can remove the oil and dust remaining on the surface of the plastic bottles, reduce the impact of pollutants, and improve the quality of reuse. After pre-washing, the plastic bottles are compressed and crushed in turn by a compression conveying mechanism and a crusher. Compression can reduce the difficulty of crushing and improve the crushing quality. The crushed shape of the plastic bottles is block or strip. During the crushing process, the cleaning liquid after pre-washing in the circulating cleaning mechanism is filtered and deslagging and then injected into the crusher, which can further clean the inside of the plastic bottle and improve the cleanliness of the plastic fragments;

[0008] S3: collecting and disinfecting the plastic fragments, specifically, heating and disinfecting the plastic fragments in a reactor, cleaning and then disinfecting the plastic fragments to avoid contamination of the reactor, and removing floating impurities during the disinfection process, and then fully drying the plastic fragments in a dryer, and heat-melting the plastic fragments in a granulator, so that the hot-melt plastic fragments can be easily extruded into filaments by the granulator, and the filamentous plastic is sheared before being fully cooled to obtain recycled plastic particles, and the size of the recycled plastic particles can be controlled by controlling the shear rate;

[0009] S4: Collect recycled plastic particles, and add corresponding auxiliary materials to the recycled plastic particles during the hot-melt processing according to the purpose and production method. The auxiliary materials include toughening agents, flame retardants, antistatic agents, transparent agents, colorants, fillers, foaming agents, etc., to improve the performance of recycled plastic particles in forming various plastic products;

[0010] S5: In the process of recycling and reusing plastic bottles, the cleanliness of the plastic bottles, the crushing size of the plastic bottles, the disinfection effect of the plastic fragments and the quality of the recycled plastic particles are tested and controlled to ensure that the plastic products meet the factory standards and requirements.

[0011] Preferably, the circulation cleaning mechanism comprises two supporting angle plates, a pre-washing box is fixedly installed on the upper ends of the two supporting angle plates, a second transmission motor is fixedly installed in the middle of the upper end surface of the pre-washing box, a return pipe is installed on one side of the second transmission motor, a first slag discharge port is fixedly installed in the middle parts of the two supporting angle plates, a second slag discharge port is installed below one of the first slag discharge ports, an annular spray frame is fixedly installed on the inner side of the upper end of the pre-washing box, a stirring frame is rotatably connected to the middle part of the annular spray frame, a separation plate is rotatably connected to the bottom end of the stirring frame, a conical guide pipe is installed on the lower end surface of the separation plate, a filter liquid storage tank is installed below the conical guide pipe, a delivery pipe is installed on one side of the filter liquid storage tank, a conical filter seat is installed on the inner side of the filter liquid storage tank, a third transmission motor is fixedly installed on the inner side of the upper end of the conical filter seat, and a cleaning scraper is rotatably connected between the conical filter seat and the filter liquid storage tank.

[0012] Preferably, the compression conveying mechanism includes a conveying box, which is fixedly connected to the pre-washing box, a fourth transmission motor is fixedly installed on the front end surface of the conveying box, two fifth transmission motors are installed below the fourth transmission motor, and two gear transmission boxes are fixedly installed on the rear end surface of the conveying box, a toggle frame is rotatably connected to the inner side of the upper end of the conveying box, a first transmission shaft is installed in the middle of the toggle frame, two first compression rollers are installed below the toggle frame, a second compression roller is installed below the first compression roller, a second transmission shaft is installed on the inner side of the first compression roller, and a third transmission shaft is installed on the inner side of the second compression roller.

[0013] Preferably, the loading conveyor includes a conveyor frame, the conveyor frame is fixedly connected to the pre-washing box, a plurality of supporting legs are fixedly installed on the lower end surface of the conveyor frame, a first transmission motor is fixedly installed on one end of the front end surface of the conveyor frame, a conveyor belt is rotatably connected to the inner side of the conveyor frame, a plurality of conveyor baffles are provided on the outer surface of the conveyor belt, and transmission rollers are installed on the inner sides of both ends of the conveyor belt.

[0014] Preferably, the end of the conveyor frame away from the first transmission motor is plugged into the inner side of the pre-wash box, the output end of the first transmission motor passes through the conveyor frame and is fixedly connected to one of the transmission rollers, the transmission belt is connected to the conveyor frame through two transmission rollers, and the rotation direction of the transmission belt is clockwise.

[0015] Preferably, a booster pump is fixedly provided on the inner side of the pulverizer, and the output end of the booster pump is connected with a return pipe. One end of the return pipe passes through the pre-washing box and is plugged into the interior of the annular spray rack. A plurality of spray nozzles are provided on the inner side of the annular spray rack, and the return pipe is connected with the plurality of spray nozzles through the annular spray rack.

[0016] Preferably, the output end of the second transmission motor passes through the pre-washing box and is connected to the stirring frame through a coupling. The stirring frame is arranged between the conveyor belt and the toggle frame. The separation plate is fixedly connected to the pre-washing box through a conical guide tube. The upper end of the conical filter seat is inserted into the inner side of the bottom end of the conical guide tube.

[0017] Preferably, the filter liquid storage tank is fixedly connected to both supporting angle plates, the output end of the third transmission motor passes through the middle of the conical filter seat and is fixedly connected to the cleaning scraper, the cleaning scraper is in close contact with the outer surface of the conical filter seat, the surface of the conical filter seat is provided with a metal filter screen, the filter liquid storage tank is connected to the crusher through a plurality of conveying pipes, one end of the second slag discharge port passes through one of the supporting angle plates and is plugged into the inner side of the bottom end of the filter liquid storage tank, one end of the two first slag discharge ports both pass through the supporting angle plates and are plugged between the filter liquid storage tank and the conical filter seat, and an electromagnetic valve is provided on the inner side of the second slag discharge port.

[0018] Preferably, the output end of the fourth transmission motor passes through the conveying box and is connected to the first transmission shaft through a coupling, the first transmission shaft is fixedly connected to the toggle frame, the rotation direction of the toggle frame is counterclockwise, and a plurality of toggle plates are fixedly provided on the outer side of the toggle frame.

[0019] Preferably, the output ends of the two fifth transmission motors both pass through the conveying box and are connected to one of the second transmission shafts and the third transmission shaft through a coupling, the second transmission shaft is fixedly connected to the first compression roller, and the third transmission shaft is fixedly connected to the second compression roller. A gear set is provided on the inner side of the gear transmission box, and the two second transmission shafts and the two third transmission shafts are connected through a gear set.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention drives the conveyor belt to transmit clockwise through the transmission roller, and then the conveyor belt can transport the plastic bottles to the inner side of the pre-washing box through multiple conveying baffles, and the second transmission motor drives the stirring frame to rotate to achieve stirring of the plastic bottles, and at the same time, the cleaning liquid inside the crusher is extracted through the reflux pipe and the plastic bottles are sprayed and rinsed through multiple spray nozzles provided on the annular spray frame, so that the plastic bottles can be stirred and pre-cleaned. The cleaning liquid is initially filtered through the separation plate, and the cleaning liquid can be further filtered through the conical filter seat to effectively remove impurities in the cleaning liquid. The third transmission motor drives the cleaning scraper to rotate on the surface of the conical filter seat and scrape the impurities remaining on the surface of the conical filter seat. The cleaning liquid can be transported to the inner side of the crusher by using multiple conveying pipes, and the cleaning liquid inside the crusher is extracted through the reflux pipe, so as to realize the recycling of the cleaning liquid;

[0022] 2. The present invention drives the toggle frame to rotate counterclockwise through the first transmission shaft, so that the plastic bottles can be stably transported between the two first compression rollers. The fifth transmission motor drives the two first compression rollers and the two second compression rollers to rotate in opposite directions synchronously through the second transmission shaft, the third transmission shaft and the gear set. Then, the plastic bottles can be gradually compressed by passing through the two first compression rollers and the second compression rollers in sequence, which is convenient for improving the crushing quality. After the compression is completed, they are transported to the inner side of the crusher, so that the plastic bottles can be crushed into blocks or strips by the crusher. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 A flow chart of the present invention as a whole;

[0025] Figure 3 It is a schematic diagram of the installation structure of the circulation cleaning mechanism of the present invention;

[0026] Figure 4 It is a rear view of the compression conveying mechanism of the present invention;

[0027] Figure 5 It is a schematic cross-sectional structure diagram of the compression conveying mechanism of the present invention;

[0028] Figure 6 It is a partial structural schematic diagram of the circulation cleaning mechanism of the present invention;

[0029] Figure 7 It is a cross-sectional structural schematic diagram of the circulation cleaning mechanism of the present invention;

[0030] Figure 8 It is a partial cross-sectional structural schematic diagram of the pre-washing box of the present invention.

[0031] In the figure: 1. feeding conveyor; 101. supporting leg; 102. conveyor frame; 103. first transmission motor; 104. conveyor belt; 105. conveying baffle; 106. transmission roller; 2. circulation cleaning mechanism; 201. supporting angle plate; 202. pre-washing box; 203. return pipe; 204. second transmission motor; 205. filter storage tank; 206. first slag discharge port; 207. conveying pipe; 208. stirring frame; 209. annular spray frame; 210. conical guide Tube; 211, conical filter seat; 212, third transmission motor; 213, cleaning scraper; 214, second slag discharge port; 215, separation plate; 3, compression conveying mechanism; 301, conveying box; 302, fourth transmission motor; 303, fifth transmission motor; 304, first transmission shaft; 305, gear transmission box; 306, toggle frame; 307, first compression roller; 308, second compression roller; 309, second transmission shaft; 310, third transmission shaft; 4, crusher. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] The first transmission motor 103 (model YS7134), the second transmission motor 204 (model YEJ3-112M-4), the third transmission motor 212 (model KOM7080), the fourth transmission motor 302 (model GV50-3.7KW-60-S) and the fifth transmission motor 303 (model YEJ3-112M-4) mentioned in the present invention can all be purchased from the market or obtained through private customization.

[0034] See also Figures 1 to 3 The present invention provides an embodiment: a recycling process for waste plastics and mineral bottles, comprising the following steps:

[0035] S1: Recycle and package discarded plastic bottles manually or mechanically, and then use vehicles to transport, transfer and store them. When the plastic bottles need to be reused, the packaging of the plastic bottles is disassembled and classified, and the metal parts mixed in the plastic bottles are removed;

[0036] S2: After impurities are removed, the feeding conveyor 1 is used to feed the plastic bottles, and the circulating cleaning mechanism 2 is used to stir and pre-clean the plastic bottles, so that the oil and dust remaining on the surface of the plastic bottles can be removed, the impact of pollutants can be reduced, and the quality of reuse can be improved. After pre-washing, the plastic bottles are compressed and crushed in turn by the compression conveying mechanism 3 and the crusher 4. Compression can reduce the difficulty of crushing and improve the crushing quality. The crushed shape of the plastic bottles is block or strip. During the crushing process, the cleaning liquid after pre-washing in the circulating cleaning mechanism 2 is filtered and deslagging and then injected into the crusher 4, so that the inside of the plastic bottles can be further cleaned, and the cleanliness of the plastic fragments can be improved;

[0037] S3: collecting and disinfecting the plastic fragments, specifically, heating and disinfecting the plastic fragments in a reactor, cleaning and then disinfecting the plastic fragments to avoid contamination of the reactor, and removing floating impurities during the disinfection process, and then fully drying the plastic fragments in a dryer, and heat-melting the plastic fragments in a granulator, so that the hot-melt plastic fragments can be easily extruded into filaments by the granulator, and the filamentous plastic is sheared before being fully cooled to obtain recycled plastic particles, and the size of the recycled plastic particles can be controlled by controlling the shear rate;

[0038] S4: Collect recycled plastic particles, and add corresponding auxiliary materials to the recycled plastic particles during the hot-melt processing according to the purpose and production method. The auxiliary materials include toughening agents, flame retardants, antistatic agents, transparent agents, colorants, fillers, foaming agents, etc., to improve the performance of recycled plastic particles in forming various plastic products;

[0039] S5: In the process of recycling and reusing plastic bottles, the cleanliness of the plastic bottles, the crushing size of the plastic bottles, the disinfection effect of the plastic fragments and the quality of the recycled plastic particles are tested and controlled to ensure that the plastic products meet the factory standards and requirements.

[0040] See also Figures 3 to 8 The circulation cleaning mechanism 2 includes two supporting angle plates 201, a pre-washing box 202 is fixedly installed on the upper end of the two supporting angle plates 201, a second transmission motor 204 is fixedly installed in the middle of the upper end surface of the pre-washing box 202, a return pipe 203 is installed on one side of the second transmission motor 204, an annular spray rack 209 is fixedly installed on the inner side of the upper end of the pre-washing box 202, a booster pump is fixedly installed on the inner side of the pulverizer 4, and the output end of the booster pump is connected to the return pipe 203, and the return pipe 203 is connected to the return pipe 203. One end of 03 passes through the pre-wash box 202 and is plugged into the inside of the annular spray rack 209. A plurality of spray nozzles are arranged on the inner side of the annular spray rack 209. The return pipe 203 is connected with the plurality of spray nozzles through the annular spray rack 209, so that the second transmission motor 204 drives the stirring rack 208 to rotate to stir the plastic bottles. At the same time, the plastic bottles are sprayed and rinsed through the plurality of spray nozzles arranged on the annular spray rack 209, so that the plastic bottles can be stirred and pre-washed.

[0041] The middle part of the annular spray frame 209 is rotatably connected with the stirring frame 208, the output end of the second transmission motor 204 passes through the pre-washing box 202 and is connected to the stirring frame 208 through a coupling, and the bottom end of the stirring frame 208 is rotatably connected with a separation plate 215, and a conical guide pipe 210 is installed on the lower end surface of the separation plate 215, and a filter storage tank 205 is installed below the conical guide pipe 210, and a delivery pipe 207 is installed on one side of the filter storage tank 205. A conical filter seat 211 is installed on the inner side of the filter storage tank 205, and a metal filter screen is provided on the surface of the conical filter seat 211. The cleaning liquid is initially filtered by the separation plate 215 and further filtered by the conical filter seat 211, so as to effectively remove impurities in the cleaning liquid;

[0042] The separation plate 215 is fixedly connected to the pre-wash box 202 through the conical guide tube 210, the upper end of the conical filter seat 211 is plugged into the inner side of the bottom end of the conical guide tube 210, and a third transmission motor 212 is fixedly installed on the inner side of the upper end of the conical filter seat 211. A cleaning scraper 213 is rotatably connected between the conical filter seat 211 and the filter storage tank 205. The filter storage tank 205 is fixedly connected to the two supporting angle plates 201. The output end of the third transmission motor 212 passes through the middle of the conical filter seat 211 and is fixedly connected to the cleaning scraper 213. The cleaning scraper 213 is in close contact with the outer surface of the conical filter seat 211, so that the third transmission motor 212 drives the cleaning scraper 213 to rotate on the surface of the conical filter seat 211 and scrapes the impurities remaining on the surface of the conical filter seat 211 to maintain the filtering effect of the conical filter seat 211.

[0043] The filter storage tank 205 is connected to the crusher 4 through a plurality of conveying pipes 207. A first slag discharge port 206 is fixedly installed in the middle of the two supporting angle plates 201. A second slag discharge port 214 is installed below one of the first slag discharge ports 206. One end of the second slag discharge port 214 passes through one of the supporting angle plates 201 and is plugged into the inner side of the bottom end of the filter storage tank 205. One end of the two first slag discharge ports 206 passes through the supporting angle plates 201 and is plugged into between the filter storage tank 205 and the conical filter seat 211. An electromagnetic valve is provided on the inner side of the second slag discharge port 214. The residue scraped by the cleaning scraper 213 can be discharged through the two first slag discharge ports 206. At the same time, the sediment of the cleaning liquid inside the filter storage tank 205 can be discharged through the second slag discharge port 214.

[0044] See also Figures 3 to 5 The compression conveying mechanism 3 includes a conveying box 301, which is fixedly connected to the pre-washing box 202. A fourth transmission motor 302 is fixedly installed on the front end surface of the conveying box 301, and two fifth transmission motors 303 are installed below the fourth transmission motor 302. Two gear transmission boxes 305 are fixedly installed on the rear end surface of the conveying box 301. The inner side of the upper end of the conveying box 301 is rotatably connected with a toggle frame 306. The stirring frame 208 is arranged between the conveyor belt 104 and the toggle frame 306. The middle part of the toggle frame 306 is installed with a first transmission shaft 304. The output end of the fourth transmission motor 302 passes through the conveying box 301 and is connected to the first transmission shaft 304 through a coupling. The first transmission shaft 304 is fixedly connected to the toggle frame 306. The rotation direction of the toggle frame 306 is counterclockwise. A plurality of toggle plates are fixedly arranged on the outer side of the toggle frame 306, so that the fourth transmission motor 302 drives the toggle frame 306 to rotate counterclockwise through the first transmission shaft 304, thereby being able to stably convey the plastic bottles.

[0045] Two first compression rollers 307 are installed below the toggle frame 306, and a second compression roller 308 is installed below the first compression roller 307. A second transmission shaft 309 is installed on the inner side of the first compression roller 307, and a third transmission shaft 310 is installed on the inner side of the second compression roller 308. The output ends of the two fifth transmission motors 303 both pass through the conveying box 301 and are connected to one of the second transmission shafts 309 and the third transmission shaft 310 through a coupling. The second transmission shaft 309 is fixedly connected to the first compression roller 307, and the third transmission shaft 310 is fixedly connected to the second compression roller 308. A gear set is provided on the inner side of the gear transmission box 305, and the two second transmission shafts 309 and the two third transmission shafts 310 are connected through a gear set. The two first compression rollers 307 and the two second compression rollers 308 rotate in opposite directions, and the plastic bottles can be gradually compressed after passing through the two first compression rollers 307 and the second compression rollers 308 in turn, so as to improve the crushing quality.

[0046] See also Figure 3 and Figure 5 The feeding conveyor 1 includes a conveyor frame 102, which is fixedly connected to the pre-washing box 202. A plurality of supporting legs 101 are fixedly installed on the lower end surface of the conveyor frame 102. A first transmission motor 103 is fixedly installed on one end of the front end surface of the conveyor frame 102. A conveyor belt 104 is rotatably connected to the inner side of the conveyor frame 102. A plurality of conveying baffles 105 are provided on the outer surface of the conveyor belt 104. Drive rollers 106 are installed on the inner sides of both ends of the conveyor belt 104. The conveyor frame 102 is away from the first One end of the transmission motor 103 is plugged into the inner side of the pre-wash box 202, the output end of the first transmission motor 103 passes through the conveyor frame 102 and is fixedly connected to one of the transmission rollers 106, the conveyor belt 104 is connected to the conveyor frame 102 through two transmission rollers 106, the rotation direction of the conveyor belt 104 is clockwise, so that the first transmission motor 103 drives the conveyor belt 104 to transmit clockwise through the transmission roller 106, and then the conveyor belt 104 can convey the plastic bottles through multiple conveying baffles 105.

[0047] In summary, when the plastic bottles are cleaned and crushed, the plastic bottles are placed on the conveyor belt 104, the power is turned on, and the first transmission motor 103 is started, so that the first transmission motor 103 drives the conveyor belt 104 to transmit clockwise through the transmission roller 106 under the support of the conveyor frame 102, and then the conveyor belt 104 can convey the plastic bottles to the inner side of the pre-washing box 202 through multiple conveying baffles 105, and the second transmission motor 204 is started, so that the second transmission motor 204 drives the stirring frame 208 to rotate under the support of the pre-washing box 202 to stir the plastic bottles, and at the same time, the cleaning liquid inside the crusher 4 is extracted through the reflux pipe 203 and the plastic bottles are sprayed and rinsed through the multiple spray nozzles provided on the annular spray frame 209, so that the plastic bottles can be stirred and pre-cleaned;

[0048] The cleaning liquid can be transported to the conical filter seat 211 after preliminary filtration by the separation plate 215 and guidance by the conical guide tube 210. A metal filter mesh is provided on the surface of the conical filter seat 211, so that the cleaning liquid can be further filtered through the conical filter seat 211 to effectively remove impurities in the cleaning liquid. The third transmission motor 212 is started, so that the third transmission motor 212 drives the cleaning scraper 213 to rotate on the surface of the conical filter seat 211 under the support of the conical filter seat 211 and scrapes the impurities remaining on the surface of the conical filter seat 211, and then the residue scraped by the cleaning scraper 213 can be discharged through the two first slag discharge ports 206, and the sediment of the cleaning liquid inside the filter storage tank 205 can be discharged through the second slag discharge port 214.

[0049] Start the fourth transmission motor 302 and the fifth transmission motor 303, so that the fourth transmission motor 302 drives the toggle frame 306 to rotate counterclockwise through the first transmission shaft 304 under the support of the conveying box 301, so that the plastic bottles can be stably conveyed between the two first compression rollers 307, and the two second transmission shafts 309 and the two third transmission shafts 310 are connected by a gear set. The fifth transmission motor 303 drives the two first compression rollers 307 and the two second compression rollers 308 to rotate in opposite directions synchronously through the second transmission shaft 309, the third transmission shaft 310 and the gear set under the support of the conveying box 301, so that the plastic bottles can be gradually compressed after passing through the two first compression rollers 307 and the second compression rollers 308 in sequence, so as to improve the crushing quality;

[0050] After compression is completed, it is transported to the inner side of the crusher 4, so that the plastic bottles can be crushed into blocks or strips by the crusher 4. At the same time, multiple conveying pipes 207 can be used to transport the cleaning liquid inside the filter storage tank 205 to the inner side of the crusher 4 to replenish the cleaning liquid inside the crusher 4, and the cleaning liquid inside the crusher 4 is extracted through the reflux pipe 203 to achieve the recycling of the cleaning liquid.

[0051] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A process for recycling and reusing waste plastics and mineral bottles, characterized in that: The following steps are involved: S1: Recycle and package discarded plastic bottles manually or mechanically, and then use vehicles to transport, transfer and store them. When the plastic bottles need to be reused, the packaging of the plastic bottles is disassembled and classified, and the metal parts mixed in the plastic bottles are removed; S2: After the impurities are removed, the plastic bottles are transported and loaded using a feeding conveyor (1), and the plastic bottles are stirred and pre-cleaned using a circulating cleaning mechanism (2), so that the oil and dust remaining on the surface of the plastic bottles can be removed, reducing the impact of pollutants and improving the quality of reuse. After the pre-cleaning, the plastic bottles are compressed and crushed in turn using a compression conveyor mechanism (3) and a crusher (4). Compression can reduce the difficulty of crushing and improve the crushing quality. The crushed plastic bottles are in the shape of blocks or strips. During the crushing process, the cleaning liquid after pre-washing in the circulating cleaning mechanism (2) is filtered to remove slag and then injected into the crusher (4), so that the inside of the plastic bottles can be further cleaned, thereby improving the cleanliness of the plastic fragments; S3: collecting and disinfecting the plastic fragments, specifically, heating and disinfecting the plastic fragments in a reactor, cleaning and then disinfecting the plastic fragments to avoid contamination of the reactor, and removing floating impurities during the disinfection process, and then fully drying the plastic fragments in a dryer, and heat-melting the plastic fragments in a granulator, so that the hot-melt plastic fragments can be easily extruded into filaments by the granulator, and the filamentous plastic is sheared before being fully cooled to obtain recycled plastic particles, and the size of the recycled plastic particles can be controlled by controlling the shear rate; S4: Collect recycled plastic particles, and add corresponding auxiliary materials to the recycled plastic particles during the hot-melt processing according to the purpose and production method. The auxiliary materials include toughening agents, flame retardants, antistatic agents, transparent agents, colorants, fillers, foaming agents, etc., to improve the performance of recycled plastic particles in forming various plastic products; S5: In the process of recycling and reusing plastic bottles, the cleanliness of the plastic bottles, the crushing size of the plastic bottles, the disinfection effect of the plastic fragments and the quality of the recycled plastic particles are tested and controlled to ensure that the plastic products meet the factory standards and requirements.

2. The process for recycling and reusing waste plastics and mineral bottles according to claim 1, characterized in that: The circulation cleaning mechanism (2) comprises two supporting angle plates (201), a pre-washing box (202) is fixedly mounted on the upper ends of the two supporting angle plates (201), a second transmission motor (204) is fixedly mounted in the middle of the upper end surface of the pre-washing box (202), a return pipe (203) is mounted on one side of the second transmission motor (204), a first slag discharge port (206) is fixedly mounted in the middle of the two supporting angle plates (201), a second slag discharge port (214) is mounted below one of the first slag discharge ports (206), an annular spray frame (209) is fixedly mounted on the inner side of the upper end of the pre-washing box (202), and a central portion of the annular spray frame (209) is provided. A stirring frame (208) is rotatably connected, and a separation plate (215) is rotatably connected at the bottom end of the stirring frame (208). A conical guide tube (210) is installed on the lower end surface of the separation plate (215). A filter liquid storage tank (205) is installed below the conical guide tube (210). A delivery pipe (207) is installed on one side of the filter liquid storage tank (205). A conical filter seat (211) is installed on the inner side of the filter liquid storage tank (205). A third transmission motor (212) is fixedly installed on the inner side of the upper end of the conical filter seat (211). A cleaning scraper (213) is rotatably connected between the conical filter seat (211) and the filter liquid storage tank (205).

3. The process for recycling and reusing waste plastics and mineral bottles according to claim 2 is characterized in that: The compression conveying mechanism (3) comprises a conveying box (301), wherein the conveying box (301) is fixedly connected to the pre-washing box (202), a fourth transmission motor (302) is fixedly mounted on the front end surface of the conveying box (301), two fifth transmission motors (303) are mounted below the fourth transmission motor (302), two gear transmission boxes (305) are fixedly mounted on the rear end surface of the conveying box (301), a toggle frame (306) is rotatably connected to the inner side of the upper end of the conveying box (301), a first transmission shaft (304) is mounted in the middle of the toggle frame (306), two first compression rollers (307) are mounted below the toggle frame (306), a second compression roller (308) is mounted below the first compression roller (307), a second transmission shaft (309) is mounted on the inner side of the first compression roller (307), and a third transmission shaft (310) is mounted on the inner side of the second compression roller (308).

4. The process for recycling and reusing waste plastics and mineral bottles according to claim 3 is characterized by: The loading conveyor (1) comprises a conveyor frame (102), the conveyor frame (102) is fixedly connected to a pre-washing box (202), a plurality of supporting legs (101) are fixedly mounted on the lower end surface of the conveyor frame (102), a first transmission motor (103) is fixedly mounted on one end of the front end surface of the conveyor frame (102), a conveyor belt (104) is rotatably connected to the inner side of the conveyor frame (102), a plurality of conveying baffles (105) are provided on the outer surface of the conveyor belt (104), and transmission rollers (106) are mounted on the inner sides of both ends of the conveyor belt (104).

5. The process for recycling and reusing waste plastics and mineral bottles according to claim 4 is characterized in that: One end of the conveyor frame (102) away from the first transmission motor (103) is plugged into the inner side of the pre-wash box (202); the output end of the first transmission motor (103) passes through the conveyor frame (102) and is fixedly connected to one of the transmission rollers (106); the transmission belt (104) is connected to the conveyor frame (102) via two transmission rollers (106); and the rotation direction of the transmission belt (104) is clockwise.

6. The process for recycling and reusing waste plastics and mineral bottles according to claim 4, characterized in that: A booster pump is fixedly arranged on the inner side of the pulverizer (4), the output end of the booster pump is connected to a return pipe (203), one end of the return pipe (203) passes through the pre-washing box (202) and is plugged into the inside of an annular spray rack (209), a plurality of spray nozzles are arranged on the inner side of the annular spray rack (209), and the return pipe (203) is connected to the plurality of spray nozzles through the annular spray rack (209).

7. The process for recycling and reusing waste plastics and mineral bottles according to claim 6, characterized in that: The output end of the second transmission motor (204) passes through the pre-wash box (202) and is connected to the stirring frame (208) through a coupling; the stirring frame (208) is arranged between the conveyor belt (104) and the shifting frame (306); the separation plate (215) is fixedly connected to the pre-wash box (202) through a conical guide tube (210); and the upper end of the conical filter seat (211) is plugged into the inner side of the bottom end of the conical guide tube (210).

8. The process for recycling and reusing waste plastics and mineral bottles according to claim 7, characterized in that: The filter liquid storage tank (205) is fixedly connected to the two supporting angle plates (201); the output end of the third transmission motor (212) passes through the middle of the conical filter seat (211) and is fixedly connected to the cleaning scraper (213); the cleaning scraper (213) is in close contact with the outer surface of the conical filter seat (211); a metal filter screen is provided on the surface of the conical filter seat (211); the filter liquid storage tank (205) is connected to the pulverizer (4) through a plurality of conveying pipes (207); one end of the second slag discharge port (214) passes through one of the supporting angle plates (201) and is plugged into the inner side of the bottom end of the filter liquid storage tank (205); one end of the two first slag discharge ports (206) passes through the supporting angle plates (201) and is plugged into between the filter liquid storage tank (205) and the conical filter seat (211); and a solenoid valve is provided on the inner side of the second slag discharge port (214).

9. The process for recycling and reusing waste plastics and mineral bottles according to claim 8, characterized in that: The output end of the fourth transmission motor (302) passes through the conveying box (301) and is connected to the first transmission shaft (304) via a coupling; the first transmission shaft (304) is fixedly connected to a shifting frame (306); the rotation direction of the shifting frame (306) is counterclockwise; and a plurality of shifting plates are fixedly provided on the outer side of the shifting frame (306).

10. The process for recycling and reusing waste plastics and mineral bottles according to claim 9, characterized in that: The output ends of the two fifth transmission motors (303) both pass through the conveying box (301) and are connected to one of the second transmission shafts (309) and the third transmission shaft (310) via a coupling; the second transmission shaft (309) is fixedly connected to the first compression roller (307); the third transmission shaft (310) is fixedly connected to the second compression roller (308); a gear set is provided on the inner side of the gear transmission box (305); the two second transmission shafts (309) and the two third transmission shafts (310) are connected via a gear set.

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