Recovery and sorting method for mixed miscellaneous glue
Through the combination of automatic sorting equipment and optical selection technology, efficient and accurate sorting of mixed rubber is achieved, the problems of low efficiency and accuracy in the existing technology are solved, and the purity and resource utilization of waste plastics are improved.
Patent Information
- Application Number
- CN202510478149.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2025-06-03
AI Technical Summary
The existing miscellaneous glue recycling and sorting methods are inefficient and low accuracy, resulting in low purity of waste plastics and it is difficult to achieve sustainable utilization of resources.
Automatic sorting equipment combined with optical selection technology is adopted to achieve efficient and accurate sorting of mixed rubber through multiple optical selection and manual sorting. The specific steps include preliminary manual sorting, one-light sorting to select PE material, the second light sorting to select PET material, and finally manual sorting to select PS material and ABS material.
The sorting efficiency and accuracy rate have been improved. The traditional manual sorting has been increased by 1t/person·day to 2.5t/person·day, and the accuracy rate has been increased from 80% to 95%, greatly improving product quality and resource utilization.
Smart Images
Figure CN120080460A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of resource recycling, and more specifically, to a method for recycling and sorting mixed waste rubber Background Art
[0002] In today's society, plastic products, with their excellent properties such as light weight, durability, and low cost, have widely penetrated into every corner of people's lives. Whether it is lunch boxes and milk tea cups in daily dining, plastic frames and washbasins for household storage, laundry detergent bottles and dishwashing liquid bottles for cleaning product packaging, or toys for children to play with, all are inseparable from plastic materials. However, with the sharp increase in the usage of plastic products, the generation of their waste - plastic garbage has also shown an alarming growth trend. According to relevant data, the annual global output of plastic garbage has been continuously rising in recent years, bringing unprecedented pressure to the environment.
[0003] Mixed waste rubber, as an important component of household plastics, covers plastic products of various materials and uses, mainly composed of PP and PE materials. Among them, plastics made of PP material, such as common lunch boxes and milk tea cups, are widely used in the catering field due to their good high-temperature resistance; household items such as plastic frames, washbasins, plastic buckets, and plastic stools utilize the high strength and durability of PP material; toys are made of PP material, emphasizing their safety and processability. And polyethylene of PE material is commonly used to make packaging containers such as laundry detergent bottles, dishwashing liquid bottles, and shampoo bottles, benefiting from its good flexibility and chemical corrosion resistance. If these mixed plastics are discarded randomly, they are difficult to degrade in the natural environment, not only will they occupy a large amount of land resources for a long time, but also may enter water bodies and soil through rainwashing, wind diffusion, etc., causing serious pollution to the ecological environment, and at the same time, it is also a great waste of precious plastic resources.
[0004] Existing methods for recycling and sorting waste rubber have certain limitations. Traditional sorting processes rely entirely on manual sorting, where workers identify the materials of waste rubber by hand for classified collection. Manual sorting mainly has two defects: 1. Low efficiency. According to statistics, the average daily sorting volume of traditional mixed waste rubber sorting centers per person is only 1t. 2. Low accuracy. Manual sorting mainly relies on the subjective judgment of sorters on the materials of waste rubber, which is uncertain, resulting in a low purity of single-category waste plastics after sorting, and the accuracy is 80%.
[0005] Therefore, there is an urgent practical need to develop an efficient and accurate method for recycling and sorting mixed waste rubber to improve the recycling rate of waste rubber, reduce environmental pollution, and achieve the sustainable utilization of rubber resources. Summary of the Invention
[0006] The purpose of the present application is to provide a recycling and sorting method for mixed rubber, which has the advantages of high sorting efficiency and high sorting accuracy.
[0007] In order to solve the above technical problems, the technical solution adopted in this application is:
[0008] The present application provides a method for recycling and sorting mixed rubber, comprising the following steps:
[0009] S1. Load the recycled mixed materials into the pit and carry out preliminary manual sorting to separate the large daily miscellaneous items from the mixed miscellaneous rubber;
[0010] S2, the mixed rubber enters the automatic sorting equipment through the feeding device for primary optical sorting, and the first channel of the primary optical sorting sorts out PE materials and primary tailings;
[0011] S3, the primary tailings enter the second channel of the automatic sorting equipment to sort out the PP material and the secondary tailings;
[0012] S4, the secondary tailings enter the optical sorter for secondary optical sorting to separate the PET material and the remaining materials;
[0013] S5. The remaining materials are manually sorted to separate PS and ABS materials.
[0014] Compared with the prior art, the embodiments of the present application have at least the following advantages or beneficial effects:
[0015] 1. The equipment required by the process of this application has a small footprint and is easy to install. Most of the sorted materials are stored in silos, which beautifies the production environment of the factory.
[0016] 2. This application has achieved the improvement of production capacity and efficiency and reduced operating costs. The manual sorting rate in a fixed site has been increased from 1t / person / day to 2.5t / person / day, which has increased the site's production capacity, improved processing efficiency and reduced operating costs.
[0017] 3. This application improves sorting accuracy and product quality. The accuracy of traditional manual sorting is 80%. After using this process, the accuracy can be increased to 95%, which greatly improves the sorting accuracy and product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is the process flow diagram of the embodiment of the present application. Detailed implementation manners
[0020] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below. For those conditions not specified in the embodiments, they are carried out according to conventional conditions or the conditions recommended by the manufacturer. For the reagents or instruments whose manufacturers are not specified, they are all conventional products that can be obtained through commercial purchase.
[0021] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to specific embodiments.
[0022] A recycling and sorting method for mixing waste rubber includes the following steps:
[0023] S1. Load the recycled mixture into the pit and perform manual sorting to sort out large daily sundries from the mixed waste rubber.
[0024] S2. Feed the mixed waste rubber into the automatic sorting equipment through the feeding device for the first optical sorting. The first channel of the first optical sorting separates out PE materials and the first tailings.
[0025] S3. The first tailings enter the second channel of the automatic sorting equipment to separate out PP materials and the second tailings.
[0026] S4. The second tailings enter the optical sorter for the second optical sorting to separate out PET materials and the remaining materials.
[0027] S5. Manually sort out the PS materials and ABS materials from the remaining materials.
[0028] In some embodiments of the present application, the large daily sundries, PE materials and PP materials obtained by sorting or separating in each step are respectively broken, washed and then packed and transported, and the PET materials, PS materials and ABS materials are packed.
[0029] In some embodiments of the present application, the feeding device in the above S2 step is a chain plate feeder.
[0030] In some embodiments of the present application, the automatic sorting equipment in the above S2 step is a hyperspectral optical sorter, which adopts the dual functions of hyperspectral and AI recognition to improve the sorting rate of mixed waste rubber. The sorting parameters in the first channel are: the channel width is 1000 - 1400 mm, the throughput is 1.5 - 2.5 t / h, and the throughput is determined by the scale and the screened raw materials. In this application, the sorting rate of PE materials under this parameter is 98%.
[0031] In some embodiments of the present application, the sorting parameters in the second channel in the above S3 step are a channel width of 600 - 1000 mm, a throughput of 1 - 2.0 t / h. Since part of the materials have been screened out when in the first channel, the throughput of the second channel is reduced. At these parameters, the sorting rate of PP materials is 95%.
[0032] In some embodiments of the present application, the equipment used for the secondary optical sorting in the above S4 step is an AI optical sorter, which performs sorting using the AI recognition function. The parameters for the secondary optical sorting are: a channel width of 1000 - 1400 mm, a throughput of 1.5 - 2.5 t / h. At these parameters, the sorting rate of PET is 98%.
[0033] In some embodiments of the present application, the above water washing is specifically as follows: It enters the first - stage friction cleaning through a screw feeder, enters the first - stage floating and sinking water tank after the friction cleaning, then undergoes secondary friction cleaning and secondary floating and sinking water washing, then enters a dehydrator for dehydration treatment, and finally enters an air - separator to remove light substances to become the finished material.
[0034] The features and performance of the present application will be further described in detail below in conjunction with the embodiments.
[0035] Embodiment 1
[0036] A method for recycling and sorting mixed waste rubber has a process as Figure 1 shown, including the following steps:
[0037] S1. A forklift loads the recycled mixed materials into a pit, and 2 people conduct preliminary manual sorting to pick out large - sized daily sundries from the mixed waste rubber. The large - sized daily sundries are crushed and washed with water.
[0038] S2. The mixed waste rubber enters an automatic sorting equipment (hyperspectral optical sorter) through a feeding chain conveyor for primary optical sorting. The automatic sorting equipment has two channels. First, the first channel has a channel width of 1200 mm and a throughput of 2 t / h. Through hyperspectral and AI, PE materials and primary tailings are sorted out; the PE materials are sent to the PE material bin, and then are crushed, washed with water and transported after being packed. The water - washing step is specifically as follows: It enters the first - stage friction cleaning through a screw feeder, enters the first - stage floating and sinking water tank after the friction cleaning, then undergoes secondary friction cleaning and secondary floating and sinking water washing, then enters a dehydrator for dehydration treatment, and finally enters an air - separator to remove light substances to become the finished material.
[0039] S3. The primary tailings enter the second channel of the automatic sorting equipment through a diversion belt. The sorting parameters in the second channel are: a channel width of 800 mm and a throughput of 1.5 t / h; PP materials and secondary tailings are sorted out through the second channel; the PP materials are sent to the PP material bin, and then are crushed, washed with water and transported after being packed.
[0040] S4. The secondary tailings enter the second optical sorter (AI optical sorter) for secondary optical sorting. The parameters for secondary optical sorting are: channel width 1400 mm, throughput 2.5 t / h; PET materials and the remaining materials are sorted out; the PET materials are packed and transported.
[0041] S5. The final remaining materials are manually sorted to pick out the PS materials and ABS materials, which are then broken and transported.
[0042] The overall accuracy rate of sorting in this embodiment can reach 95%, and the efficiency is 2.5 t per person per day. There are significant improvements in both accuracy and efficiency compared to traditional manual sorting.
[0043] Example 2
[0044] A recycling and sorting method for mixed waste rubber has a process as Figure 1 shown, including the following steps:
[0045] S1. A forklift loads the recycled mixed materials into a pit, and 2 people conduct preliminary manual sorting to pick out large household sundries from the mixed waste rubber. The large household sundries are crushed and washed with water.
[0046] S2. The mixed waste rubber enters the automatic sorting equipment (hyperspectral optical sorter) through a feeding chain conveyor for primary optical sorting. The automatic sorting equipment has two channels. First, the width of the first channel is 1300 mm, and the throughput is 2.2 t / h. Through hyperspectral and AI, PE materials and primary tailings are sorted out; the PE materials are sent to the PE material bin, and then crushed, washed with water, and packed and transported; the specific steps of the water washing process are as follows: enter the first friction cleaning through a screw feeder, enter the first floating and sinking water tank after friction cleaning, then conduct secondary friction cleaning and secondary floating and sinking water washing, then enter a dehydrator for dehydration treatment, and finally enter a pneumatic separator to remove light substances to become finished materials.
[0047] S3. The primary tailings enter the second channel of the automatic sorting equipment through a diversion belt. The sorting parameters in the second channel are: channel width 900 mm, throughput 1.6 t / h; PP materials and secondary tailings are sorted out through the second channel; the PP materials are sent to the PP material bin, and then crushed, washed with water, and packed and transported.
[0048] S4. The secondary tailings enter the second optical sorter (AI optical sorter) for secondary optical sorting. The parameters for secondary optical sorting are: channel width 1200 mm, throughput 2.0 t / h; PET materials and the remaining materials are sorted out; the PET materials are packed and transported.
[0049] S5. The final remaining materials are manually sorted to pick out the PS materials and ABS materials, which are then broken and transported.
[0050] Example 3
[0051] A recycling and sorting method for mixed waste rubber, the process is as follows Figure 1 as shown, including the following steps:
[0052] S1. The forklift loads the recycled mixed materials into the pit, and 2 people conduct preliminary manual sorting to pick out large daily sundries from the mixed waste rubber. The large daily sundries are crushed and washed with water.
[0053] S2. The mixed waste rubber enters the automatic sorting equipment (hyperspectral optical sorter) through the feeding chain conveyor for the first optical sorting. The automatic sorting equipment has two channels. First, the width of the first channel is 1400 mm, and the throughput is 2.5 t / h. Through hyperspectral and AI, PE materials and the first tailings are sorted out; the PE materials are sent to the PE material bin, and then crushed, washed with water and transported after packing; the specific steps of the water washing are as follows: entering the first friction cleaning through the screw feeder, entering the first floating and sinking water tank after friction cleaning, then conducting secondary friction cleaning and secondary floating and sinking water washing, then entering the dehydrator for dehydration treatment, and finally entering the air separator to remove light substances to become the finished product materials.
[0054] S3. The first tailings enter the second channel of the automatic sorting equipment through the diversion belt. The sorting parameters in the second channel are: the channel width is 1000 mm, and the throughput is 1.8 t / h; PP materials and the second tailings are sorted out through the second channel; the PP materials are sent to the PP material bin, and then crushed, washed with water and transported after packing;
[0055] S4. The second tailings enter the second optical sorter (AI optical sorter) for secondary optical sorting. The parameters of the secondary optical sorting are: the channel width is 1000 mm, and the throughput is 1.5 t / h; PET materials and the remaining materials are sorted out; the PET materials are packed and transported;
[0056] S5. The final remaining materials are manually sorted to pick out PS materials and ABS materials among them, and are broken and transported.
[0057] In summary, a recycling and sorting method for mixed waste rubber in the embodiment of the present application, the mixed waste rubber is mainly composed of PP and PE materials, and these two types of waste rubber are also the main materials for the current recycling of waste plastics. The automatic sorting process of the present application realizes the sorting of waste plastics of PP and PE materials completely relying on equipment through a specific equipment combination, getting rid of the traditional manual sorting process, and achieving the effects of capacity improvement, efficiency improvement and accuracy improvement:
[0058] 1. The equipment required by the process of the present application occupies a small area, is convenient for equipment installation, and most of the sorted materials enter the material bin for centralized storage, beautifying the production environment of the factory area.
[0059] 2. This application has achieved improvements in production capacity and efficiency, and reduced operating costs. The sorting capacity per person per day in a fixed site has been increased from 1 t / person·day by manual sorting to 2.5 t / person·day, improving the production capacity of the site, enhancing the processing efficiency, and reducing the operating costs.
[0060] 3. This application improves the sorting accuracy and product quality. The accuracy rate of traditional manual sorting is 80%, and after adopting this process, the accuracy rate can be increased to 95%, greatly improving the sorting accuracy, and the product quality is also improved accordingly.
[0061] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of this application that is claimed, but merely represents the selected embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without making creative efforts shall fall within the scope of protection of this application.
Claims
1. A method for recycling and sorting mixed rubber, characterized in that: The following steps are involved: S1. Load the recycled mixed materials into the pit and carry out preliminary manual sorting to separate the large daily miscellaneous items from the mixed miscellaneous rubber; S2, the mixed rubber enters the automatic sorting equipment through the feeding device for primary optical sorting, and the first channel of the primary optical sorting sorts out PE materials and primary tailings; S3, the primary tailings enter the second channel of the automatic sorting equipment to sort out the PP material and the secondary tailings; S4, the secondary tailings enter the optical sorter for secondary optical sorting to separate the PET material and the remaining materials; S5. The remaining materials are manually sorted to separate PS and ABS materials.
2. A method for recycling and sorting mixed rubber according to claim 1, characterized in that: The large daily necessities, PE materials and PP materials obtained by sorting or classification in each step are respectively crushed and washed before being packaged and transported, and the PET materials, PS materials and ABS materials are packaged.
3. A method for recycling and sorting mixed rubber according to claim 1, characterized in that: The feeding device in step S2 is a chain feeder.
4. A method for recycling and sorting mixed rubber according to claim 1, characterized in that: The automatic sorting equipment in step S2 is a hyperspectral optical sorter, and the sorting parameters in the first channel are: channel width 1000-1400mm, flow rate 1.5-2.5t / h.
5. A method for recycling and sorting mixed rubber according to claim 4, characterized in that: The sorting parameters in the second channel in step S3 are: channel width 600-1000 mm, flow rate 1-2.0 t / h.
6. A method for recycling and sorting mixed rubber according to claim 5, characterized in that: The equipment used for the secondary optical sorting in step S4 is an AI optical sorter, and the parameters of the secondary optical sorting are: channel width 1000-1400mm, flow rate 1.5-2.5t / h.
7. A method for recycling and sorting mixed rubber according to claim 2, characterized in that: The water washing specifically includes: entering the first friction cleaning through a screw feeder, entering the first sinking and floating water tank after friction cleaning, then undergoing secondary friction cleaning and secondary sinking and floating water washing, then entering the dehydrator for dehydration, and finally entering the air separator to remove light materials to become the finished material.