JP-2026075262-A - Waste plastic transport system

JP2026075262AJP 2026075262 AJP2026075262 AJP 2026075262AJP-2026075262-A

Abstract

[Problem] To provide a waste plastic transport system with a simple structure that can transport uncrushed waste plastics and other materials over long distances in a suitable and efficient manner. [Solution] The waste plastic transport system 10 comprises a transport material input section 3 to which a blower 1 is connected, a duct 5 with one end connected to the transport material input section 3, and a transport material discharge section 7 connected to the other end of the duct 5. The transport material discharge section 7 has a separation section for separating the transport material from the air, and a recovery section below the separation section for collecting the transport material. The duct 5 is connected to the front of the separation section, the sides, rear and top surfaces of the separation section are mesh-like, the bottom of the separation section opens to the recovery section, and an air blowing section is provided on at least a part of the rear or top surface of the separation section, which can blow air from outside the separation section, causing the transport material stuck to the inner surface of the rear or top surface of the separation section to fall into the recovery section. [Selection Diagram] Figure 1

Inventors

間中弘之
安藤拓哉
松浦英樹

Assignees

鹿島建設株式会社

Dates

Publication Date: 20260508
Application Date: 20241022

Claims (9)

A waste plastic transport system for transporting waste plastics, A conveying material input section to which a blower is connected, A duct with one end connected to the material input section, A conveyed material discharge section connected to the other end of the aforementioned air duct, It is equipped with, The material discharge unit comprises a separation unit for separating the material from the air, and a recovery unit located below the separation unit for recovering the material. The air duct is connected to the front of the separation section, the sides, rear and top surfaces of the separation section are mesh-like, and the lower part of the separation section opens to the recovery section. A waste plastic transport system characterized in that an air blowing unit is provided on at least a portion of the rear or upper surface of the separation unit, which is capable of blowing air from outside the separation unit, and the transported material adhering to the inner surface of the rear or upper surface of the separation unit can be dropped into the collection unit by the air blowing unit.
The waste plastic conveying system according to claim 1, characterized in that at least a portion of the rear surface of the separation section is formed with an inclined section that slopes toward the recovery section, and the air blowing section is capable of blowing air toward the inclined section from the outside.
The waste plastic transport system according to claim 1, characterized in that a partition is provided below the separation section, within a predetermined range from the front surface of the separation section, separating it from the space of the recovery section, and the area below the separation section opens to the recovery section in a portion other than the partition.
The conveyed material input section has a plurality of input ports, and each of the input ports has a shutter that shields the air from the blower and a lid that can close the input port. The waste plastic transport system according to claim 1, characterized in that when transporting material into one of the input ports, the shutter of the one input port is closed and the lid of the one input port is opened, while the shutter of the other input port is opened and the lid of the other input port is closed.
The waste plastic transport system according to claim 1, characterized in that the aforementioned air duct is made of vinyl or cloth.
The waste plastic transport system according to claim 5, characterized in that the air duct is divided into multiple sections in the longitudinal direction.
The waste plastic conveying system according to claim 5, characterized in that the air duct has a bent portion in part, and the bent portion is made of metal.
The waste plastic conveying system according to claim 1, characterized in that information on the quantity, size, shape, or wetness of the conveyed material is acquired from an image taken inside the air duct or in the conveyed material input section, and the control unit can adjust the airflow rate of the blower according to the information.
The waste plastic transport system according to claim 1, characterized in that it acquires information on airflow rate or air pressure at the transported material discharge section, and the control unit can adjust the airflow rate of the blower according to the information.

Description

This invention relates to a waste plastic transport system. To effectively promote the recycling of waste plastics, it is desirable to be able to perform advanced sorting of waste plastics that are disposed of as household waste. In recent years, more advanced sorting technologies utilizing near-infrared analyzers and other equipment have gradually become practical, and even conventional recycling plants are increasingly introducing new equipment. However, when constructing a new facility building at an existing recycling plant, layout constraints on the site often necessitate placing the new facility far from the area where waste plastic is received from collection trucks. Therefore, it becomes necessary to arrange separate trucks or other means to transport the waste plastic from the receiving area to the sorting facility building, which poses a significant burden and problem. Conventionally, in such cases, a technology for transporting waste plastic with a simple configuration has been developed in which the waste plastic is crushed into small pulverized pieces, and then fed into a pipe through which air is blown from a blower and transported to a predetermined location (for example, Patent Documents 1 and 2). Patent No. 4830196Japanese Patent Application Publication No. 8-276158 Side view of the waste plastic transport system 10.(a) is a side view of the straight section 51 of the air duct 5, and (b) is a cross-sectional view taken along line C-C in Figure 2(a).A perspective view of the material discharge section 7.In the cross-sectional view D-D of Figure 3, (a) illustrates the state in which the conveyed material 41 is stuck to the inner surface of the separation section 71, and (b) illustrates the state in which the conveyed material 41 is dropped into the recovery section 73 by the air blowing section 9.A diagram illustrating the material discharge section 7a.Top view of the material input section 3.Cross-sectional view of the material input section 3a.Cross-sectional view of the material input section 3b. The embodiments of the present invention will be described in detail below with reference to the drawings. (Waste plastic transport system 10) Figure 1 is a side view of the waste plastic transport system 10 of this embodiment. The waste plastic transport system 10 comprises a blower 1, a transport material input section 3, a duct 5, and a transport material discharge section 7. The blower 1 is a fan that blows air. In Figure 1, the blower 1 blows air to the right (towards the conveyed material input section 3). Hereafter, the windward side may be referred to as the front, and the leeward side as the back. The blower 1 is also connected to an airflow adjustment unit 17. The airflow adjustment unit 17 controls the blower 1 to adjust its airflow. The airflow adjustment unit 17 will be described in detail later. The material input section 3 is the part into which uncrushed waste plastics, etc. (including hard and soft plastics and vinyl; hereafter referred to as "materials") to be transported are input. The material input section 3 is connected to the blower 1 at a predetermined position, and one end of the air duct 5 is connected to a predetermined position on the opposite side from the side connected to the blower 1. As a result, the materials input into the material input section 3 are blown by the air supplied by the blower 1 and transported into the air duct 5. The material input section 3 also includes a material information acquisition unit 13 for acquiring information about the materials. The material information acquisition unit 13 will be described in detail later. The air duct 5 is a hollow member through which air flows, with one end connected to the material input section 3 and the other end connected to the material output section 7. That is, within the air duct 5, the material is blown by the airflow while being transported from the material input section 3 to the material output section 7. The distance between the material input section 3 and the material output section 7 is relatively long, for example, about 100m to 1km. In the illustrated example, at least a portion of the air duct 5 is suspended via a suspension jig 23 from a horizontal bar 21 appropriately placed above it. This allows the air duct 5 to be kept from resting over a long distance on the ground 90 between the material input section 3 and the material output section 7, creating a large open space that can be used for other work. The layout of the air duct 5 is not particularly limited. The air duct 5 has a straight section 51 in part. The straight section 51 is the portion of the air duct 5 that is arranged in a generally straight line. Details of the straight section 51 will be described later. Furthermore, the air duct 5 has a bent portion 53 in a part of it. This bent portion 53 is provided at a predetermined position on the air duct 5, is bent at a predetermined angle, and is made of a material that does not easil