CN107716346A - Multistage cullet light selects sorting system and its control method - Google Patents

Abstract

The invention discloses a multi-stage waste glass optical sorting system and its control method, including a coarse material sorting optical sorting system, a residual material re-sorting optical sorting system and a fine material sorting optical sorting system; The sorting optical sorting system includes multiple cullet optical sorting machines. The coarse material sorting optical sorting system classifies the crushed and impurity-removed materials according to different particle sizes, and sends the sorted materials to the remaining materials. Sorting optical sorting system or fine material sorting optical sorting system, a delabeling machine is set between the coarse material sorting optical picking system and the remaining material re-sorting optical picking system. The present invention can subdivide a variety of different specifications through coarse material sorting, residual material re-sorting and fine material sorting, which facilitates the removal of all impurities, greatly improves sorting quality and production capacity, and does not affect sorting efficiency.

Description

Multi-stage waste glass optical separation and sorting system and its control method

technical field

The invention relates to a regeneration resource recovery system and a control method thereof, in particular to a multi-stage waste glass optical sorting system and a control method thereof.

Background technique

The recycling rate of waste glass in life is as high as 90% in Europe, while 85% in our country is mixed with garbage and discarded. The utilization rate of renewable resources in my country is low, especially low-value recyclables such as waste glass, waste textiles, and waste packaging paper are discarded in large quantities, which not only intensifies the trend of garbage siege, but also causes environmental pollution. Waste glass does not melt when burned to more than 1,000 degrees, and does not degrade after being buried in the ground for hundreds of years, which is extremely harmful to the environment.

There are still many technical bottlenecks in my country's renewable resource industry. The sorting in the recycling process is extensive and lacks fine sorting technology. Considering the difficulty of sorting and production efficiency, the existing waste glass is generally sorted by an optical sorter. Therefore, it is necessary to improve the existing waste glass sorting system and its control method.

Contents of the invention

The technical problem to be solved by the present invention is to provide a multi-stage waste glass optical sorting system and its control method, which can greatly improve the sorting quality and production capacity without affecting the sorting efficiency.

The technical solution adopted by the present invention to solve the above technical problems is to provide a multi-stage waste glass optical sorting system, including a coarse material sorting optical sorting system, a surplus material re-sorting optical sorting system and a fine material sorting optical sorting system. system; the coarse material sorting optical sorting system includes multiple cullet optical sorting machines, the coarse material sorting optical sorting system classifies the crushed and impurity-removed materials according to different particle specifications, and the classified materials They are respectively sent to the optical sorting system for the re-sorting of the remaining materials or the optical sorting system for the sorting of the fine materials, and a de-labeling machine is set between the optical sorting system for the coarse material sorting and the optical sorting system for the re-sorting of the remaining materials.

The above-mentioned multi-stage waste glass optical sorting system, wherein, the coarse material sorting optical sorting system includes three groups of cullet optical sorting machines arranged side by side, and the feeding ports of the three groups of cullet optical sorting machines are respectively It is connected with the three outlets of the first relaxation vibrating screen, and the inlet of the first relaxation vibrating screen is connected with the outlet of the first L-shaped vibrating feeder. The first relaxation vibrating screen The fine material outlet is directly sent to the fine material sorting optical sorting system.

The above-mentioned multi-stage waste glass optical sorting system, wherein, the fine material sorting optical sorting system includes two sorting channels; the first channel of 3-8mm materials passes through the first classifying vibrating screen and the first group of cullet optical Sorting machine for sorting, the first cullet Z-shaped sieve and the first cyclone separator are arranged between the first grading vibrating screen and the first group of cullet optical separators, and the first group of cullet The optical sorter is provided with a first wind circulation device; an eddy current sorter and a dryer are arranged in front of the first classifying vibrating screen, and the outlet of the first classifying vibrating screen is connected with a metal classification and packing device; the second The 0-3mm fine material is sorted through the second grading vibrating screen and the second group of cullet optical separators, and a second cullet is arranged between the second grading vibrating sieve and the second group of cullet optical separators. A glass zigzag screening machine and a second cyclone separator, the second group of cullet optical separators are provided with a second wind circulation device.

The above multi-stage waste glass optical sorting and sorting system, wherein, the remaining material re-sorting and sorting optical sorting system includes three successively connected cullet optical sorting machines, the first level includes two sets of cullet optical sorting machines, The second level includes two groups of cullet optical sorting machines, and the third level adopts a set of cullet optical sorting machines; the first level of cullet optical sorting machines is equipped with a second relaxation vibrating screen, and the second relaxation The vibrating screen is connected with the label removing machine. One outlet of the second-stage cullet optical sorting machine is mainly colored glass, and the other outlet is ceramic stone impurities; one outlet of the third-stage cullet optical sorting The outlet is colored glass, and the other outlet is ceramic stone impurities.

In order to solve the above technical problems, the present invention also provides a control method for the above-mentioned multi-stage waste glass optical sorting and sorting system, which includes the following steps: S1: Pretreatment of incoming materials: including metering, screening and removing impurities, and crushing materials ;S2: Coarse material light sorting: Use eddy current separator to remove non-ferrous metals, complete three-stage sieving according to 1-3mm, 3-8mm and 8-50mm, and send materials with a particle size of 0-8mm to the fine material separator Light sorting system, the remaining materials are divided into 8~14mm, 14~22mm and 22~50mm by the coarse material sorting light sorting system, after the rollers in the label removing machine rotate to cause friction between the materials to remove the labels, send Optical sorting system for re-sorting of remaining materials; S3: Optical sorting of fine materials: after drying and screening of fine materials, the 5-8mm materials are transported to a channel of the cullet optical sorting machine through the conveyor belt, and the 3-5mm materials pass through the conveyor belt It is transported to another channel of the same cullet optical sorter; the unblown materials in the two particle size ranges are transported to the 0-8mm product bin through the conveyor belt, and the blown materials enter the next-level cullet optical sorter for impurities and variegated colors. Separation; 0-3mm materials are transported to the screening unit through the conveyor belt, and the 0-1mm materials are directly sent to the fine material bin after screening, and the 1-3mm materials are transported to the crushed glass optical sorting machine through the distributor after removing organic matter, and the blown stones The ceramics will be directly transported to the stone ceramic storage area, and the cullet products that have not been blown out will be transported to the 0-8mm cullet product material area through the conveyor belt; S4: re-sorting of the remaining materials Optical sorting: use a three-stage cullet optical sorting machine Continue to sieve 8-50mm to separate impurities and variegated colors, and obtain materials of 8-16, 16-22, 22-50mm; S5: output metering: after separation, the main color glass, colored glass miscellaneous pieces and stone ceramics Measure the output separately.

In the control method of the above-mentioned multi-stage waste glass optical sorting system, the step S1 includes using a magnetic iron removal device on the weighing conveyor belt to remove iron blocks above the conveyor belt.

The control method of the above-mentioned multi-stage waste glass optical sorting and sorting system, wherein, in the step S1, materials smaller than 60 mm are filtered out by grading and vibration, and then directly sent to step S2 for optical sorting of coarse materials, and the remaining materials are classified as follows Crushing: Alternating slides are used to guide the whole glass bottle and jar to the roller crusher. The distance between the rollers of the first roller crusher is 50mm, which is used to squeeze the bottom of the broken glass bottle; the crushed material is transported to the Lifting device, and then sieve the smaller whole material from the broken glass through the bar screen, and the broken material is sent to the conveyor belt; the unbroken whole material is sent to the second roller crusher for crushing after passing through the bar screen. Beating, the distance between the rollers is 15mm, the head part of the bottle is broken, and the bottle cap falls off; the bottle cap and cork are screened out from the broken glass with a bar sieve, and the broken glass is transported to the conveyor belt through the distributor.

The control method of the above-mentioned multi-stage waste glass optical sorting and sorting system, wherein, the separation process of the variegated glass in the step S4 is as follows: the broken glass to be sorted is dispersed into a single layer by the distributing machine, and the material is dispersed into a single layer at the lower end of the distributing machine Discharge; in the process of cullet falling freely, the cullet particles are first scanned by a high-resolution CCD sensor, and the data is processed by a pre-adjusted information processor according to the scanning results of its color, brightness and particle size; CCD After the sensor detects that the amount of material exceeds the preset threshold, it will give instructions to a row of high-pressure air injection valves located below to activate or not according to the position and size of the cullet particles. After the air injection valve is activated, the cullet particles or After the impurities are blown away from the normal falling track, two sorted products are obtained.

Compared with the prior art, the present invention has the following beneficial effects: the multi-stage waste glass optical separation and sorting system and its control method provided by the present invention can be subdivided through coarse material sorting, residual material re-sorting and fine material sorting. A variety of different specifications are convenient for removing all impurities and sundries. At the same time, it can distinguish between main colored glass and variegated glass for each specification, which greatly improves the sorting quality and production capacity without affecting the sorting efficiency.

Description of drawings

Fig. 1 is a schematic structural diagram of the coarse material sorting and sorting system in the multi-stage waste glass optical sorting system of the present invention;

Fig. 2 is a structural schematic diagram of the optical sorting system for re-sorting residual materials in the multi-stage waste glass optical sorting system of the present invention;

Fig. 3 is a schematic structural diagram of the fine material sorting and sorting system in the multi-stage waste glass optical sorting system of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

The multi-stage waste glass optical sorting system provided by the present invention includes a coarse material sorting optical sorting system, a surplus material re-sorting optical sorting system and a fine material sorting optical sorting system; the coarse material sorting optical sorting system includes A plurality of cullet optical sorting machines, the coarse material sorting optical sorting system classifies the broken and impurity-removed materials according to different particle sizes, and sends the sorted materials to the remaining material re-sorting optical sorting system or An optical sorting system for fine material sorting, a delabeling machine is set between the optical sorting system for coarse material sorting and the optical picking system for re-sorting remaining materials.

Fig. 1 is a schematic structural diagram of the coarse material sorting and sorting system in the multi-stage waste glass optical sorting system of the present invention.

Please refer to Fig. 1, the multi-stage waste glass optical sorting system provided by the present invention, the coarse material sorting optical sorting system includes three groups of cullet optical sorting machines arranged side by side, the input of the three groups of cullet optical sorting machines The feed ports are respectively connected to the three discharge ports of the first relaxation vibrating screen 1440, the feed port of the first relaxation vibrating screen 1440 is connected to the discharge port of the first L-shaped vibrating feeder 1435, and the The fine material outlet (0-8mm material) of the first relaxation vibrating screen 1440 is directly sent to the fine material sorting optical sorting system by the belt conveyor 1441; the first group is cullet optical sorting machines 1509 and 1510 for Screening of 22-50mm materials, the distribution speed is 20t/h; the second group is cullet optical sorting machines 1539 and 1540, used to screen 14-22mm materials, the distribution speed is 18t/h; the third group is cullet Optical sorting machines 1569 and 1570 are used to screen 8-14mm materials with a cloth speed of 12t/h; 1450, 1460, 1470 and 1590 are belt conveyors.

Fig. 2 is a structural schematic diagram of the optical sorting system for re-sorting residual materials in the multi-stage waste glass optical sorting system of the present invention.

Please refer to Fig. 2, the multi-stage waste glass optical sorting system provided by the present invention, the left material re-sorting optical sorting system includes three successively connected cullet optical sorting machines, the first level includes two groups of cullet optical sorting machines Separators 3399, 3400, 3419 and 3420, the second stage includes two sets of cullet optical separators 3409, 3410, 3429 and 3430, and the third stage uses a set of cullet optical separators 3439 and 3440. The first and second cullet optical sorting machines are connected by vibrating feeders 3425 and 3426, the second and third cullet optical sorting machines are connected by belt conveyors 3436 and 3437; the first cullet optical sorting machine There is a second relaxation vibrating screen 1610 in front, and the second relaxation vibrating screen 1610 is connected by a belt conveyor 1607, a vibrating feeder 1605 and a label removing machine 1600, and the fine material outlet of the second relaxation vibrating screen 1610 passes through The belt conveyor 1640 is sent to the 0-8mm material bin. The remaining material is sent to the first-stage cullet optical sorting machine 3399 through the belt conveyor 1620, and the other is sent to the first-stage cullet optical separator through the belt conveyor 1630. Select machine 3419. One outlet of the second-stage cullet optical separator 3410, 3430 is sent to the main color glass material bin through the belt conveyor 3435, and the other outlet is sent to the ceramic stone impurity material bin through the belt conveyor 3415; the third One outlet of the first-grade cullet optical sorting 3440 is sent to the colored glass material bin through 3445, and the other outlet is sent to the ceramic stone impurity material bin through belt conveyors 3446, 3470, and 3415.

Fig. 3 is a schematic structural diagram of the fine material sorting optical sorting system in the multi-stage waste glass optical sorting system of the present invention.

Please refer to Fig. 3 , the multi-stage waste glass optical separation system provided by the present invention, the fine material sorting optical separation system passes through the vibrating feeder 3058 and the Mogensen vibrating screen 3050 for the first time to form 0-3mm and 3- 8mm, 3-8mm fine materials are sorted through the first classifying vibrating screen 3059 and the cullet optical separator 3088, 3089, 3098, 3099, and the first classifying vibrating screen 3059 and the cullet optical separator There is a first cullet Z-shaped screen 3053 and a first cyclone separator 3055. The optical separator is provided with a first wind circulation device 3057; the first grading vibrating screen 3059 is provided with an eddy current separator 3047 , dryer 3000 and dryer dust removal system 3005. The feed port of the dryer 3000 is equipped with a belt conveyor 2090 and a vibrating feeder 2091, and the discharge port is connected by a vibrating feeder 3010, a large-angle belt conveyor 3046, an inertial vibrating feeder 3043 and an eddy current separator 3047 ; The outlet of the first classifying vibrating screen 3059 is connected with the metal sorting and packing device. The metal sorting and packaging device includes a plurality of finished product bins 4100, 4200, 4300, and 4400 of different specifications, which are respectively used to store 1-3, 3-8, 8-22, 22-50mm materials; 0-3mm fine materials pass through the first Two-stage vibrating screen 3100, second cyclone separator 3115, second cullet zigzag screening machine 3110, second wind circulation device 3117, second L-shaped vibrating feeder 3118, cullet optical separator 3119, 3120, 3129, 3130 sorting. 3058 is a vibrating feeder, 3051, 3060, 3065, 3070, 3105, 3150 and 3180 are all belt conveyors.

The present invention also provides a control method for the above-mentioned multi-stage waste glass optical separation system, which includes the following steps:

S1: Feed pretreatment: including metering, screening and impurity removal and crushing of materials; on the metering conveyor belt, a magnetic iron removal device is used to remove iron blocks above the conveyor belt;

S2: Coarse material light sorting: Use eddy current separator to remove non-ferrous metals, complete three-stage sieving according to 1-3mm, 3-8mm and 8-50mm, and send materials with a particle size of 0-8mm to fine material sorting Optical sorting system, the remaining materials are divided into three categories of 8-14mm, 14-22mm and 22-50mm by the coarse material sorting optical sorting system, and the labels are removed by friction between the materials through the rotation of the roller in the label removing machine, and then sent to Surplus material re-sorting optical sorting system;

S3: Light sorting of fine materials: After the fine materials are dried and screened, the 5-8mm materials are transported to a channel of the cullet optical sorting machine through the conveyor belt, and the 3-5mm materials are transported to the same channel of the cullet optical sorter through the conveyor belt. Another channel; the unblown materials in the two particle size ranges are conveyed to the 0-8mm product bin by the conveyor belt, and the blown materials enter the next-level cullet optical sorter for impurities and variegated separation;

The 0-3mm material is transported to the screening unit through the conveyor belt. After screening, the 0-1mm material directly enters the fine material bin, and the 1-3mm material is transported to the cullet optical sorting machine through the distributor after the organic matter is removed. The blown stone ceramics will be It is directly transported to the stone ceramic storage area, and the cullet products that have not been blown out are transported to the 0-8mm cullet product material area through the conveyor belt;

S4: Re-sorting of remaining materials Optical sorting: use a three-stage cullet optical sorting machine to continue to sieve 8-50mm to separate impurities and variegated colors, and obtain 8-16, 16-22, 22-50mm materials;

S5: Discharge measurement: Measure and discharge the separated main color glass, colored glass miscellaneous pieces and stone ceramics respectively.

In the control method of the multi-stage waste glass optical sorting system provided by the present invention, in the step S1, the materials smaller than 60 mm are filtered out by grading and vibrating, and then directly sent to the step S2 for optical sorting of coarse materials, and the remaining materials are classified as follows Crushing: Alternating slides are used to guide the whole glass bottle and jar to the roller crusher. The distance between the rollers of the first roller crusher is 50mm, which is used to squeeze the bottom of the broken glass bottle; the crushed material is transported to the Lifting device, and then sieve the smaller whole material from the broken glass through the bar screen, and the broken material is sent to the conveyor belt; the unbroken whole material is sent to the second roller crusher for crushing after passing through the bar screen. Beating, the distance between the rollers is 15mm, the head part of the bottle is broken, and the bottle cap falls off; the bottle cap and cork are screened out from the broken glass with a bar sieve, and the broken glass is transported to the conveyor belt through the distributor.

The invention can analyze or sort according to the color and brightness of the material, the particle size, and the length/width ratio of the particle, and use high-sensitivity induction to identify ferrous metals and non-ferrous metals. Its working principle is: the broken glass to be sorted is dispersed into a single layer by the distributing machine, and discharged from the lower end of the distributing machine. During the free falling process of broken glass, the broken glass particles are first scanned by a high-resolution color camera (CCD sensor), and the data is processed by a pre-adjusted high-information processor according to the scanning results of its color, brightness and particle size. . The CCD sensor can also be selected according to the sorting task or cullet sorting requirements to achieve maximum accuracy. The CCD sensor detects more than 15,000 materials per second. The high-pressure air injection valve gives instructions to activate or not to activate, and the activation time of the air injection valve can be as fast as 3 milliseconds. After the broken glass particles or impurities to be selected are blown away from the normal falling track, two sorting products are obtained. The precision of the nozzles is extremely high, and the pitch can be as small as 2.24 mm, and the cullet can be sorted at a minimum of 1 mm, which greatly increases the recovery rate of cullet.

To sum up, the multi-stage waste glass optical separation system and its control method provided by the present invention can subdivide various specifications, remove all impurities, greatly improve the sorting quality, improve sorting efficiency and production capacity, and have specific advantages As follows: 1. High degree of automation: It can realize automatic measurement, control, deviation correction, automatic sorting, packaging, adding water, loading, loading, etc. 2. Complete sorting: The sorting technology adopts: optical sorting, magnetic sorting, re-sorting, winnowing and other advanced technologies to completely solve the complete separation of metals, stones, ceramics, colors, light organic matter and dust. 3. Excellent product quality: the processed product has high purity and excellent quality. Not only can it be separated from the color, but also has complete specifications, and can form more than a dozen varieties ranging from 1-3, 3-5, 5-8, 8-16, 16-25, 25-50mm.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection should be defined by the claims.

Claims (8)

1. A multi-stage waste glass optical sorting system, characterized in that it includes a coarse material sorting optical sorting system, a surplus material re-sorting optical sorting system and a fine material sorting optical sorting system; The coarse material sorting optical sorting system includes multiple cullet optical sorting machines, the coarse material sorting optical sorting system classifies the crushed and impurity-removed materials according to different particle sizes, and sends the classified materials to To the optical sorting system for re-sorting the remaining materials or the optical sorting system for sorting the fine materials, a de-labeling machine is set between the optical sorting system for sorting the coarse materials and the optical sorting system for re-sorting the remaining materials. 2. The multi-stage waste glass optical sorting system according to claim 1, wherein the coarse material sorting optical sorting system comprises three groups of cullet optical sorting machines arranged side by side, and the three groups of cullet optical sorting machines The feed port of the optical separator is connected to the three discharge ports of the first relaxation vibrating screen (1440) respectively, and the feed port of the first relaxation vibrating screen (1440) is connected to the first L-shaped vibrating feeder. The discharge port of the machine (1435) is connected, and the fine material outlet of the first relaxation vibrating screen (1440) is directly sent to the fine material sorting system. 3. The multi-stage waste glass optical sorting system according to claim 1, characterized in that the fine material sorting optical sorting system includes two sorting channels; the first 3-8mm material passes through the first classification The vibrating screen (3059) and the first group of cullet optical sorting machines (3088, 3089, 3098, 3099) are sorted, and the first classifying vibrating screen (3059) and the first group of cullet optical sorting machines A first cullet Z-shaped screen (3053) and a first cyclone separator (3055) are provided, and a first air circulation device (3057) is provided on the first group of cullet optical separators; the first classification An eddy current separator (3047) and a dryer (3000) are arranged in front of the vibrating screen (3059), and the outlet of the first classifying vibrating screen (3059) is connected to the metal sorting and packaging device; the second road is 0-3mm fine The material is sorted through the second classifying vibrating screen (3100) and the second group of cullet optical separators (3119, 3120, 3129, 3130), and the second classifying vibrating screen (3100) and the second group of cullet optical A second cullet zigzag screening machine (3110) and a second cyclone separator (3115) are arranged between the separators, and a second wind circulation device (3117) is arranged on the second group of cullet optical separators. 4. The multi-stage waste glass optical sorting system according to claim 1, characterized in that, the remaining material re-sorting optical sorting system comprises three successively connected cullet optical sorting machines, the first level includes Two sets of cullet optical sorters (3399, 3400, 3419 and 3420), the second stage contains two sets of cullet optical sorters (3409, 3410, 3429 and 3430) sorting machines (3439 and 3440); the first level of cullet optical sorting machines (3400, 3420) is provided with a second relaxation vibrating screen (1610), and the second relaxation vibrating screen (1610) and labeling machine (1600) connected, one outlet of the second-stage cullet optical sorting machine (3410, 3430) is mainly colored glass, and the other outlet is ceramic stone impurities; the third-stage cullet optical sorting (3440) One of the outlets is colored glass, and the other outlet is ceramic stone impurities. 5. A control method for a multi-stage waste glass optical sorting system as claimed in claim 1, characterized in that it comprises the following steps: S1: Feed pretreatment: including metering, screening and impurity removal and crushing of materials; S2: Coarse material light sorting: Use eddy current separator to remove non-ferrous metals, complete three-stage sieving according to 1-3mm, 3-8mm and 8-50mm, and send materials with a particle size of 0-8mm to fine material sorting Optical sorting system, the remaining materials are divided into three categories of 8-14mm, 14-22mm and 22-50mm by the coarse material sorting optical sorting system, and the labels are removed by friction between the materials through the rotation of the roller in the label removing machine, and then sent to Surplus material re-sorting optical sorting system; S3: Light sorting of fine materials: After the fine materials are dried and screened, the 5-8mm materials are transported to a channel of the cullet optical sorting machine through the conveyor belt, and the 3-5mm materials are transported to the same channel of the cullet optical sorter through the conveyor belt. Another channel; the unblown materials in the two particle size ranges are conveyed to the 0-8mm product bin by the conveyor belt, and the blown materials enter the next-level cullet optical sorter for impurities and variegated separation; The 0-3mm material is transported to the screening unit through the conveyor belt. After screening, the 0-1mm material directly enters the fine material bin, and the 1-3mm material is transported to the cullet optical sorting machine through the distributor after the organic matter is removed. The blown stone ceramics will be It is directly transported to the stone ceramic storage area, and the cullet products that have not been blown out are transported to the 0-8mm cullet product material area through the conveyor belt; S4: Re-sorting of remaining materials Optical sorting: use a three-stage cullet optical sorting machine to continue to sieve 8-50mm to separate impurities and variegated colors, and obtain 8-16, 16-22, 22-50mm materials; S5: Discharge measurement: Measure and discharge the separated main color glass, colored glass miscellaneous pieces and stone ceramics respectively. 6. The control method of the multi-stage waste glass optical sorting system according to claim 5, characterized in that the step S1 comprises using a magnetic iron removal device on the weighing conveyor belt to remove the iron pieces above the conveyor belt. 7. The control method of the multi-stage waste glass optical separation and sorting system according to claim 5, characterized in that, in the step S1, the materials smaller than 60 mm are filtered out by grading and vibrating, and then directly sent to the step S2 for coarse material sorting. Sorting, and the remaining materials are graded and crushed in the following manner: Alternate slides are used to guide the whole glass bottle and can to the roller crusher. The first roller crusher has a 50mm distance between the rollers and is used to squeeze the bottom of the broken glass bottle; The crushed material is conveyed to the lifting device through the distributor, and then the small whole material is screened out from the broken glass through the bar screen, and the broken material is sent to the conveyor belt; the unbroken whole material is sent to the second Two sets of roller crushers hit the rollers with a distance of 15mm to crush the bottle head and let the bottle cap fall off; then use the bar sieve to screen the bottle cap and cork from the broken glass, and the broken glass is then Conveyed to the conveyor belt by the distribution machine. 8. The control method of the multi-stage waste glass optical sorting and sorting system according to claim 5, characterized in that, the separation process of the variegated glass in the step S4 is as follows: the cullet to be sorted passes through the distributing machine to the material Disperse into a single layer and discharge at the lower end of the distributing machine; during the free falling process of broken glass, firstly, the high-resolution CCD sensor scans the broken glass particles, according to the scanning results of its color, brightness and particle size, the pre-adjusted After the CCD sensor detects that the amount of material exceeds the preset threshold, according to the position and size of the broken glass particles, it will give instructions to the row of high-pressure air injection valves located below to start or not, and the air injection valve will start. Finally, after the broken glass particles or impurities to be selected are blown away from the normal falling track, two sorting products are obtained.