Polyester micro-plastic impurity removal equipment

Abstract

The utility model relates to the field of waste polyester regeneration equipment, and discloses polyester micro-plastic impurity removal equipment. The equipment is used for realizing the impurity removal method and comprises irradiation treatment equipment, a separation tank, a cleaning tank, a dehydrator and a drying tower. The equipment is simple in structure and convenient to operate, can accurately control the radiation dose and time in the impurity removal process, effectively controls the surface temperature of the polyester micro-plastic, is easy to produce and popularize, and can be expanded and used according to different radiation methods.

Description

Technical Field

[0001] This utility model relates to the field of waste polyester recycling equipment, and more specifically, to a polyester microplastic removal device. Background Technology

[0002] Waste plastics enter the environment through various pathways and decompose into plastic fragments through physical, chemical, or biological processes. Microplastics, with a particle size of less than 5 mm, are defined as plastic particles. Microplastics currently cause serious pollution in rivers, oceans, and soil, impacting biodiversity and the physical and chemical properties of soil. Current research on microplastics mainly focuses on their distribution, degradation, and impact on biodiversity in aquatic and soil environments; there are few reports on the recycling and reuse of microplastics.

[0003] Currently, recycled polyester mainly uses waste polyester textiles and polyester bottle flakes as raw materials. Waste polyester textiles are mostly colored, making them suitable for spinning colored fibers, while polyester bottle flakes are primarily used for spinning white fibers. Due to their wide availability and environmental factors, waste polyester contains many impurities, necessitating cleaning before recycling. The cleaning and processing of polyester bottle flakes generates a large amount of polyester microplastics. These microplastics are primarily composed of polyester, but also contain a significant amount of polyvinyl chloride (PVC). This PVC primarily originates from residual packaging paper on the polyester bottle flakes during the polyester recycling process. The presence of PVC not only affects the color of the polyester fiber but also the melt viscosity; therefore, the PVC content is a crucial parameter for bottle flake quality. However, because the PVC in the microplastics is small and its color is similar to that of the polyester bottle flakes, it is difficult to sort, severely limiting the large-scale use of polyester microplastics and significantly wasting this potentially recyclable resource.

[0004] Therefore, the applicant has developed a device that uses irradiation technology to remove polyvinyl chloride from polyester microplastics. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a polyester microplastic impurity removal device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A polyester microplastic impurity removal device includes an irradiation treatment device, a separation tank, a washing tank, a dewatering machine, and a drying tower that are interconnected.

[0008] Preferably, the equipment also includes a raw material silo, a pneumatic conveyor, and a discharge screw. The raw material silo is connected to the irradiation treatment equipment via the conveying screw. The irradiation treatment equipment is connected to the separation tank via the conveying screw. The dewatering machine is connected to the pneumatic conveyor via a conveyor belt. The drying tower is located between the pneumatic conveyor and the discharge screw.

[0009] Preferably, the irradiation treatment equipment is an electron beam irradiation equipment.

[0010] Preferably, the separation tank includes a primary separation tank and a secondary separation tank connected to each other, and multi-stage separation can improve the separation effect.

[0011] Preferably, the irradiation treatment equipment is equipped with an infrared thermometer, which can monitor the surface temperature of the polyester microplastics in real time.

[0012] Preferably, the raw material silo is equipped with a stirring device to prevent polyester microplastics from clumping.

[0013] Preferably, the raw material silo is funnel-shaped.

[0014] Preferably, the drying tower is equipped with a hot air device.

[0015] Preferably, the air outlet of the hot air device is located at the top of the drying tower, with the airflow direction from top to bottom.

[0016] Preferably, the cleaning tank includes two interconnected tanks, which can improve cleanliness.

[0017] The equipment used in this invention has a simple structure and is easy to operate. It can accurately control the radiation dose and time during the impurity removal process, effectively control the surface temperature of polyester microplastics, is easy to produce and promote, and can be expanded to be used according to different irradiation methods. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a polyester microplastic impurity removal device.

[0019] Attached reference numerals: 01-Raw material silo, 02-Conveying screw, 03-Irradiation treatment equipment, 04-Infrared thermometer, 05-Conveying screw, 06-Primary separation tank, 07-Secondary separation tank, 08-Washing tank, 09-Dewatering machine, 10-Conveying belt, 11-Pneumatic conveyor, 12-Drying tower, 13-Discharge screw. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] This utility model provides a polyester microplastic impurity removal device, such as Figure 1 As shown, the equipment includes an interconnected raw material silo 01, an irradiation treatment device 03, a primary separation tank 06, a secondary separation tank 07, a washing tank 08, a dewatering machine 09, and a drying tower 12.

[0023] The raw material silo 01 is connected to the irradiation treatment equipment 03 via the first conveying screw 02. The irradiation treatment equipment 03 is connected to the primary separation tank 06 via the second conveying screw 05. The primary separation tank 06, the secondary separation tank 07, the washing tank 08, and the dewatering machine 09 are connected in sequence. The dewatering machine 09 is connected to the pneumatic conveyor 11 via the conveyor belt 10. The drying tower 12 is located between the pneumatic conveyor 11 and the discharge screw 13.

[0024] Furthermore, the irradiation treatment equipment 03 is an electron beam irradiation equipment, and an infrared thermometer 04 is installed on the equipment.

[0025] Furthermore, a stirring device is installed inside the raw material silo 01, and the raw material silo 01 can be funnel-shaped.

[0026] Furthermore, a hot air device is installed inside the drying tower 12, and the air outlet of the hot air device is located at the top inside the drying tower 12, with the airflow direction from top to bottom.

[0027] Furthermore, the cleaning tank 08 includes two tanks connected in sequence.

[0028] The specific operating process of the equipment is as follows: Polyester microplastics are fed into the raw material silo 01. An agitator in the raw material silo 01 prevents the polyester microplastics from clumping. The polyester microplastics are then fed into the irradiation treatment equipment 03 via the conveying screw 02. The irradiation treatment equipment 03 is equipped with an infrared thermometer 04 to monitor the surface temperature of the polyester microplastics in real time. After irradiation treatment, the polyester microplastics are sequentially fed into the primary separation tank 06 and the secondary separation tank 07 via the conveying screw 05 for impurity removal. After impurity removal, the polyester microplastics are washed in the washing tank 08, dehydrated in the dewatering machine 09, and then fed into the drying tower 12 via the conveyor belt 10 and the pneumatic conveyor 11 for drying. After drying, the material is discharged through the discharge screw 13 for packaging.

[0029] The above description of embodiments of the present invention, through which those skilled in the art are able to implement or use the present invention, will be readily apparent to those skilled in the art. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A polyester microplastic impurity removal device, characterized in that, The equipment includes an interconnected raw material silo (01), an irradiation treatment device (03), a separation tank, a washing tank (08), a dewatering machine (09), and a drying tower (12); the equipment also includes a raw material silo (01), a pneumatic conveyor (11), and a discharge screw (13). The raw material silo (01) is connected to the irradiation treatment device (03) via a conveying screw (02). The irradiation treatment device (03) is connected to the separation tank via a conveying screw (02). The dewatering machine (09) is connected to the pneumatic conveyor (11) via a conveyor belt (10). The drying tower (12) is located between the pneumatic conveyor (11) and the discharge screw (13). An infrared thermometer (04) is installed on the irradiation treatment device (03).

2. The polyester microplastic impurity removal device according to claim 1, characterized in that, The irradiation treatment equipment (03) is an electron beam irradiation equipment.

3. The polyester microplastic impurity removal device according to claim 1, characterized in that, The separation tank includes a primary separation tank (06) and a secondary separation tank (07) that are connected to each other.

4. The polyester microplastic impurity removal device according to claim 1, characterized in that, The raw material silo (01) is equipped with a stirring device.

5. The polyester microplastic impurity removal device according to claim 1, characterized in that, The raw material silo (01) is funnel-shaped.

6. The polyester microplastic impurity removal device according to claim 1, characterized in that, The drying tower (12) is equipped with a hot air device.

7. The polyester microplastic impurity removal device according to claim 6, characterized in that, The air outlet of the hot air device is located at the top of the drying tower (12), and the airflow direction is from top to bottom.

8. The polyester microplastic impurity removal device according to claim 1, characterized in that, The cleaning tank (08) comprises two interconnected tanks.

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