A plastic cleaning and impurity removing wire

Abstract

The application relates to the technical field of plastic recycling treatment, and discloses a plastic cleaning and impurity removing line which comprises a basic treatment unit and a water treatment and circulation unit. The basic treatment unit is used for completing the core processes of plastic cleaning, water filtering and packaging, and the water treatment and circulation unit provides cleaning water for various water-required components and recycles waste water. The basic treatment unit is used for receiving plastics to be cleaned and completing cleaning, water filtering and packaging treatment. The basic treatment unit comprises a chain plate conveying mechanism, a cleaning device, a water filtering conveying mechanism and a packaging mechanism, and the components are sequentially connected along the plastic treatment direction. The output end of the chain plate conveying mechanism is correspondingly arranged with the input end of the cleaning device, and the chain plate conveying mechanism is butted or directly adjacent to the cleaning device during use, so that the plastics to be cleaned are conveyed into the cleaning device, and the plastics are prevented from spilling during the conveying process. The chain plate surface of the chain plate conveying mechanism is provided with anti-skid lines, so that the conveying stability of small particle plastics is improved.

Description

Technical Field

[0001] This application relates to the field of plastic recycling technology, and in particular to a plastic cleaning and impurity removal line. Background Technology

[0002] During the plastic recycling process, the plastic separated from the waste often has contaminants such as mud, oil, and impurities attached to it. These contaminants need to be removed through cleaning and cleaning treatment in order to meet the requirements for subsequent recycling.

[0003] Most cleaning equipment is designed for plastics of a single size, such as only being able to process small plastic particles or only large plastics. It cannot meet the cleaning needs of plastics of different sizes at the same time. If multiple sizes of plastics need to be processed, multiple sets of equipment are required, which increases the investment cost of equipment and the space occupied. Some equipment lacks a reasonable conveying and connecting structure, and plastics are prone to stagnation during the transfer between cleaning, filtration and packaging stages. Moreover, the water after filtration is not effectively recovered, which affects the processing efficiency and causes secondary waste of resources. Utility Model Content

[0004] To address the aforementioned problems, this application provides a plastic cleaning and impurity removal line.

[0005] The plastic cleaning and impurity removal line provided in this application adopts the following technical solution: A plastic cleaning and impurity removal line includes a basic processing unit for receiving plastics to be cleaned and completing cleaning, filtration and packaging processes, and a water treatment circulation unit connected to the basic processing unit. The water treatment circulation unit provides the water required for cleaning to the basic processing unit and simultaneously recycles the cleaning wastewater generated by the basic processing unit. The basic processing unit includes at least: a chain conveyor mechanism whose output end corresponds to the input end of the cleaning equipment and is used to transport the plastic to be cleaned into the cleaning equipment; a water filtration conveyor mechanism whose input end corresponds to the output end of the cleaning equipment and is used to filter the cleaned plastic; and a packaging mechanism located at the end of the water filtration conveyor mechanism away from the cleaning equipment and used to package the filtered plastic.

[0006] Preferably, it further includes: a large plastic pretreatment unit for pretreating large plastics, wherein the output end of the large plastic pretreatment unit is connected to the input end of the basic processing unit to transport the pretreated plastics to the basic processing unit.

[0007] Preferably, the large plastic pretreatment unit includes at least: a crushing and conveying mechanism for conveying large plastics to a plastic crusher, a plastic crusher for crushing large plastics into sizes suitable for processing by the basic treatment unit, and a lifting and conveying device for conveying the crushed plastics to the basic treatment unit.

[0008] Preferably, the large plastic pretreatment unit further includes a cleaning mechanism, which is disposed between the lifting and conveying equipment and the basic treatment unit, and is used to pre-clean the crushed plastic. The cleaning mechanism is connected to the water treatment circulation unit via a pipeline. The water treatment circulation unit provides the cleaning mechanism with the liquid required for cleaning, and the cleaning mechanism transports its wastewater to the water treatment circulation unit via a recovery pipeline.

[0009] Preferably, the water filtration and conveying mechanism includes: a packaging conveyor disposed between the cleaning equipment and the packaging mechanism for conveying water during the filtration process; and a filter guide frame disposed below the packaging conveyor for receiving water filtered out during the packaging conveyor process. The filter guide frame is connected to the water inlet of the water treatment circulation unit through a pipeline to recover the received water to the water treatment circulation unit.

[0010] Preferably, the water filtration and conveying mechanism further includes a feeding cylinder disposed at the output end of the cleaning equipment for adjusting the feeding efficiency in conjunction with the packaging conveyor.

[0011] Preferably, the water treatment circulation unit consists of multiple cleaning tanks arranged sequentially along the water flow direction, and adjacent cleaning tanks are connected by pipelines with valves to achieve graded treatment of recycled wastewater.

[0012] Preferably, the water supply pipeline between the water treatment circulation unit and the cleaning equipment, cleaning mechanism, and water filtration and conveying mechanism, as well as the recovery pipeline between each component and the water treatment circulation unit, are equipped with control valves. The control valves are used to adjust the water flow rate and control the opening and closing of the pipelines.

[0013] In summary, this application includes the following beneficial technical effects: Through the modular design of "basic processing unit + large plastic pretreatment unit", it can process small plastic particles and large plastics at the same time, without the need to equip multiple sets of equipment, thus reducing equipment investment and site occupation costs.

[0014] Each component is connected sequentially along the plastic processing direction, and the feeding rate is adjusted by the feeding cylinder, and the perforated conveyor belt realizes water filtration and transportation simultaneously, reducing the retention of plastic in each stage and improving the overall processing efficiency; at the same time, the filter guide rack recovers the water in the filtration stage to avoid resource waste. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of Example 1.

[0016] Figure 2 This is a schematic diagram of the structure of Example 2.

[0017] Figure 3 This is a schematic diagram of the structure of the filter water guide frame of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Chain conveyor mechanism; 2. Cleaning equipment; 3. Water filtration conveyor mechanism; 4. Packaging mechanism; 5. Crushing conveyor mechanism; 6. Plastic crusher; 7. Lifting conveyor equipment; 8. Cleaning mechanism; 9. Water treatment circulation unit; 31. Packaging conveyor; 32. Filter guide frame; 33. Feeding cylinder. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0020] Example 1 This application discloses a plastic cleaning and impurity removal line for removing small plastic fragments. (Refer to...) Figure 1 It includes: a basic treatment unit and a water treatment and recycling unit 9; the basic treatment unit is used to complete the core processes of plastic cleaning, filtration and packaging, and the water treatment and recycling unit 9 provides cleaning water for each water-requiring component and recycles wastewater.

[0021] The basic processing unit receives the plastic to be cleaned and completes the cleaning, filtration, and packaging processes. The basic processing unit includes: a chain conveyor mechanism 1, a cleaning device 2, a filtration conveyor mechanism 3, and a packaging mechanism 4. These components are connected sequentially along the plastic processing direction. The output end of the chain conveyor mechanism 1 corresponds to the input end of the cleaning device 2. During use, they connect via a conveyor belt or are directly adjacent to each other to transport the plastic to be cleaned into the cleaning device 2, preventing spillage during transport. The chain surface of the chain conveyor mechanism 1 can be provided with anti-slip textures to improve the stability of transporting small plastic particles. The cleaning device 2 is equipped with a spray assembly or agitation cleaning assembly to clean the input plastic. In actual use, high-pressure spraying removes surface mud and sand, or agitation combined with cleaning water removes oil stains. The output end of the cleaning device 2 corresponds to the input end of the filtration conveyor mechanism 3, ensuring that the cleaned plastic can be completely transferred to the filtration stage. The filtration conveyor mechanism 3 filters the cleaned plastic, removing moisture adhering to the plastic surface. The packaging mechanism 4 is located at the end of the water filtration conveying mechanism 3 away from the cleaning equipment 2 (i.e., at the output end of the packaging conveyor 31). It adopts a hydraulic packaging or mechanical compaction structure to compress and package the filtered plastic, reduce the volume of the plastic, and facilitate subsequent storage and transportation.

[0022] In the above embodiments, the filtration conveying mechanism 3 further includes: a packaging conveyor 31 and a filter guide frame 32, and may also include a discharge cylinder 33; the packaging conveyor 31 is located between the cleaning equipment 2 and the packaging mechanism 4, and its conveyor belt adopts a hollow structure (using a metal mesh belt), so that surface moisture can drip through the hollow parts during the conveying process, achieving simultaneous filtration and conveying; Figure 3 As shown, the filter guide frame 32 is located below the packaging conveyor 31 and has an inclined water guide trough structure. The trough can be equipped with filter screen holes (to filter plastic debris and other impurities) to collect the water filtered out during the conveying process of the packaging conveyor 31. The lower end of the filter guide frame 32 is connected to the water inlet of the water treatment circulation unit 9 through a pipeline, so that the collected water can flow back to the water treatment circulation unit 9. The discharge cylinder 33 is located at the output end of the cleaning equipment 2, and its lower end corresponds to the input end of the packaging conveyor 31. It has a funnel-shaped structure. By adjusting the size of the discharge port of the discharge cylinder 33, the rate at which plastic enters the packaging conveyor 31 can be controlled to avoid plastic accumulation and insufficient filtration. This helps to adjust the overall processing efficiency in conjunction with the packaging conveyor 31.

[0023] The water treatment circulation unit is connected to the basic treatment unit and can also be connected to the cleaning mechanism 8 of the large plastic pretreatment unit. The core component is the water treatment circulation unit 9, which provides the water required for cleaning to each water-requiring component and at the same time recycles the cleaning wastewater generated by each component, so as to realize the recycling of water resources.

[0024] The water treatment circulation unit 9 consists of multiple cleaning tanks arranged sequentially along the water flow direction (primary sedimentation tank, secondary filtration tank, tertiary purification tank, etc.). Adjacent cleaning tanks are connected by pipelines with valves. The recovered wastewater first enters the front-end cleaning tank (such as the primary sedimentation tank) for preliminary sedimentation to remove large particulate impurities. Then, it enters the subsequent cleaning tanks (such as the secondary filtration tank which filters out fine impurities through a filter screen, and the tertiary purification tank which adsorbs oil stains through chemicals or activated carbon) through valve control. The final treated water meets the standards for cleaning water. Water supply and wastewater recycling logic: The outlet of the water treatment circulation unit 9 is connected to the cleaning equipment 2 of the basic treatment unit and the cleaning mechanism 8 of the large plastic pretreatment unit through the water supply pipeline, respectively, to provide them with cleaning water; at the same time, the cleaning equipment 2 is connected to the inlet of the water treatment circulation unit 9 through the cleaning water recycling pipeline, the cleaning mechanism 8 through the cleaning water recycling branch pipe, and the filter guide frame 32 through the return water pipeline, respectively, to recycle the cleaning wastewater (including the water dripping from the filtration stage) generated by each component to the water treatment circulation unit 9, forming a water cycle of "water supply-use-recycling-treatment-resupply".

[0025] Example 2 To meet the cleaning and impurity removal requirements for large plastics, a large plastic pretreatment unit is added. The large plastic pretreatment unit is used to pretreat large plastics (plastic buckets, plastic sheets) to make them compatible with the processing specifications of the basic treatment unit. Its output end is connected to the input end of the chain conveyor mechanism 1 or the input end of the cleaning equipment 2. The large plastic pretreatment unit includes at least a crushing and conveying mechanism 5, a plastic crusher 6, and a lifting and conveying device 7, and may also include a washing mechanism 8. The crushing and conveying mechanism 5 uses a belt conveyor or a chain conveyor, with its output end corresponding to the input end of the plastic crusher 6, for conveying large plastics into the plastic crusher 6. Baffles may be installed on both sides of the crushing and conveying mechanism 5 to prevent the large plastics from shifting during conveying. The plastic crusher 6 is equipped with a rotating crushing blade assembly to crush the large plastics into granules or small blocks (size adapted to small granular plastics, particle size 5-20mm). The crushed plastics are conveyed to the lifting and conveying device 7 through the discharge port. The lifting and conveying device 7 uses a bucket elevator or an inclined conveyor belt, with its input end corresponding to the output end of the plastic crusher 6, and its output end corresponding to the input end of the chain conveyor mechanism 1 or the washing device 2 of the basic treatment unit, for lifting and conveying the crushed plastics to the basic treatment unit. A guide plate may be installed at the discharge end of the lifting and conveying device 7 to ensure that the plastics fall accurately into subsequent components.

[0026] The cleaning mechanism 8 is located between the lifting and conveying equipment 7 and the basic processing unit. Its internal structure is similar to that of the cleaning equipment 2 in the basic processing unit (small spray assembly). It is used to pre-clean the crushed plastic to remove debris or surface residues generated during the crushing process. The cleaning mechanism 8 is connected to the water treatment circulation unit 9 through a pipeline. The water treatment circulation unit 9 provides it with cleaning water. The wastewater generated by the cleaning mechanism 8 is transported to the water treatment circulation unit 9 for recycling through a recovery pipeline.

[0027] To ensure stable operation of each stage, the plastic cleaning and impurity removal line is also equipped with control valves. Control valves (ball valves or butterfly valves) are installed on the water supply pipeline between the water treatment circulation unit 9 and the cleaning equipment 2, cleaning mechanism 8, and water filtration conveying mechanism 3 (filter guide frame 32), as well as on the recovery pipeline between the cleaning equipment 2, cleaning mechanism 8, filter guide frame 32 and the water treatment circulation unit 9. The water flow rate can be controlled by adjusting the opening of the control valves (the spray water volume can be adjusted according to the cleaning requirements), and the pipeline can be opened or closed by switching the valves on and off.

[0028] In actual use, when processing small plastic particles, the small plastic particles are manually or fed into the chain conveyor mechanism 1 of the basic processing unit. The chain conveyor mechanism 1 transports the small plastic particles to the cleaning equipment 2. The cleaning equipment 2 activates the spray or stirring components and uses the cleaning water provided by the water treatment circulation unit 9 to clean the plastic. After cleaning, the small plastic particles enter the packaging conveyor 31 of the water filtration conveyor mechanism 3. During the conveying process, the surface moisture of the plastic drips through the perforated conveyor belt to the filter guide frame 32 below. The water collected by the filter guide frame 32 flows back to the water treatment circulation unit 9 through the pipeline. The packaging conveyor 31 transports the filtered small plastic particles to the packaging mechanism 4. The packaging mechanism 4 compresses and packages the filtered small plastic particles, completing the cleaning and impurity removal process. The cleaning wastewater generated by the cleaning equipment 2 is recycled to the water treatment circulation unit 9 through the cleaning water recovery pipeline. After being treated by a multi-stage cleaning tank, it is supplied to the cleaning equipment 2 again as cleaning water, realizing water circulation. When processing large plastics, the large plastics are conveyed to the plastic crusher 6 via the crushing and conveying mechanism 5. The plastic crusher 6 crushes the large plastics into small pieces or granules suitable for the basic processing unit. The crushed plastics are then conveyed to the washing mechanism 8 via the lifting and conveying equipment 7. The washing mechanism 8 uses washing water provided by the water treatment circulation unit 9 to pre-wash the crushed plastics, removing debris and residual impurities. The wastewater generated from the pre-washing is returned to the water treatment circulation unit 9 through a recycling pipeline. The pre-washed plastics are then conveyed by the lifting and conveying equipment 7 to the chain conveyor mechanism 1 of the basic processing unit. The subsequent process is the same as the small granular plastic processing process, namely, washing, filtration, and packaging, while the wastewater is recycled back to the water treatment circulation unit 9 for reuse. The plastic crusher 6 is a twin-shaft shredder.

[0029] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A plastic cleaning and impurity removal line, characterized in that, include: The basic processing unit is used to receive the plastic to be cleaned and to complete the cleaning, filtration and packaging processes. A water treatment circulation unit is connected to the basic treatment unit; The water treatment circulation unit is used to provide the water required for cleaning the basic treatment unit, and at the same time, to recycle the cleaning wastewater generated by the basic treatment unit. The basic processing unit includes at least: The chain conveyor mechanism has its output end corresponding to the input end of the cleaning equipment, and is used to transport the plastic to be cleaned into the cleaning equipment. A water filtration and conveying mechanism is provided with its input end corresponding to the output end of the cleaning equipment, and is used to filter water from the cleaned plastic. A packaging mechanism is located at the end of the water filtration and conveying mechanism away from the cleaning equipment, and is used to package the filtered water into plastic.

2. The plastic cleaning and impurity removal line according to claim 1, characterized in that, Also includes: A large plastic pretreatment unit for pretreating large plastics, wherein the output end of the large plastic pretreatment unit is connected to the input end of the basic processing unit to transport the pretreated plastics to the basic processing unit.

3. A plastic cleaning and impurity removal line according to claim 2, characterized in that, The large plastic pretreatment unit includes at least: Crushing and conveying mechanism, used to transport large plastics to the plastic crusher; A plastic crusher is used to crush large plastics into plastics suitable for processing by the basic processing unit. A lifting conveyor is used to transport the crushed plastic to the basic processing unit.

4. A plastic cleaning and impurity removal line according to claim 3, characterized in that, The large plastic pretreatment unit further includes a cleaning mechanism, which is disposed between the lifting and conveying equipment and the basic treatment unit, and is used to pre-clean the crushed plastic. The cleaning mechanism is connected to the water treatment circulation unit via a pipeline. The water treatment circulation unit provides the cleaning mechanism with the liquid required for cleaning, and the cleaning mechanism transports its wastewater to the water treatment circulation unit via a recovery pipeline.

5. A plastic cleaning and impurity removal line according to claim 1, characterized in that, The water filtration and conveying mechanism includes: A packaging conveyor is installed between the cleaning equipment and the packaging mechanism for conveying materials during the water filtration process. A water filter rack is installed below the packing conveyor to collect water filtered out during the packing conveyor's transport process. The filter water guide frame is connected to the water inlet of the water treatment circulation unit through a pipeline to recover the collected water to the water treatment circulation unit.

6. A plastic cleaning and impurity removal line according to claim 5, characterized in that, The water filtration and conveying mechanism further includes a feeding cylinder located at the output end of the cleaning equipment for adjusting the feeding efficiency in conjunction with the packaging conveyor.

7. A plastic cleaning and impurity removal line according to claim 1, characterized in that, The water treatment circulation unit consists of multiple cleaning tanks arranged sequentially along the water flow direction. Adjacent cleaning tanks are connected by pipelines with valves to achieve graded treatment of recycled wastewater.

8. A plastic cleaning and impurity removal line according to claim 1, characterized in that, The water supply pipeline between the water treatment circulation unit and the cleaning equipment, cleaning mechanism, and water filtration and conveying mechanism, as well as the recovery pipeline between the cleaning equipment, cleaning mechanism, water filtration and conveying mechanism and the water treatment circulation unit, are all equipped with control valves. The control valves are used to adjust the water flow rate and control the opening and closing of the pipelines.

Images