JP2015223703A - Screening device for soft and hard plastics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screening device for soft and hard plastics capable of efficiently separating and screening by using the suction force of air and the tare of waste.SOLUTION: A screening device 1 for soft and hard plastics has: a conveyor unit 4 in which a mesh conveyor belt 9 is inclinedly arranged, and the waste materials mixedly including lightweight soft plastics and hard plastics weighing to some extent are charged on a conveying face; and an air suction means 21 which is arranged making the opening 22a being a suction port approach to the conveying rear face of the mesh conveyor belt 9 and brings to act a suction force on the conveying rear face side from the conveying face side. The device is configured so as to convey the soft plastics while adsorbing on the conveying face of the mesh conveyor belt 9 by the suction force of the air suction means 21 to discharge from a conveyance top end, and to drop the hard plastics unable to adsorb by the suction force by the tare thereof below the conveyor belt 9 to discharge and thereby, to separate and screen the soft and hard plastics.

Description

  The present invention relates to an apparatus for sorting soft and hard plastics, and more specifically, for efficiently separating and discriminating by introducing a waste product in which soft plastics such as plastic bags and hard plastics such as plastic bottles are mixed. The present invention relates to a sorter for soft and hard plastics.

  In general, sorting and separation of waste containing a mixture of soft plastics such as plastic bags including plastic bags, wraps, and thin plastic sheets, and hard plastics such as plastic bottles, trays, and plastic containers. Work is often done manually.

  However, such a manual sorting operation is extremely inefficient and unsuitable for mass processing. Therefore, attempts have been made to partially mechanize waste sorting operations using an air flow.

  Patent Document 1 includes a casing having a rectangular cross section in which a part of an upper wall is configured by a porous filter, and a conveyor provided inside the casing and having a crosspiece that moves along both side walls of the casing. Air is gradually discharged during the transfer, switching from air transfer to conveyor transfer semi-continuously to enable smooth discharge, and the exhaust chamber for exhausting and sucking through the porous filter is divided by partition walls. There is disclosed an air conveyance object separation device configured to solve clogging of a filter due to sticking of films by alternately operating and stopping in a plurality of sections.

  In Patent Document 2, in a wind power sorting apparatus that separates floating material and non-floating material by wind power, at least one side wall of both side walls parallel to the conveying direction across the conveying means of the mixture of floating material and non-floating material is disclosed. A casing in which the inner surface shape is concave in the vertical direction, and the inner surface shape is parallel to the upper surface of the transport means from the lower part of the other side wall facing the concave side wall in the vertical direction, and A nozzle that ejects air in a direction substantially perpendicular to the conveying direction, and a floating substance that rises and reverses along the inner surface of the side wall that is concave in the vertical direction opposite to the nozzle, and is conveyed along the casing ceiling. And a discharge port that is provided above the side wall on the same side as the nozzle and communicates with the casing in order to discharge the carrier air.

  Patent Document 3 includes a casing having a conical inner peripheral surface and a suction port provided on the small diameter side of the inner peripheral surface, and at least one nozzle that ejects gas along the inner peripheral surface. Furthermore, a vortex airflow suction device is disclosed that includes a cover that closes the large diameter side of the inner peripheral surface and has a discharge port on the side surface.

  However, including Patent Documents 1 to 3 described above. In reality, there is no technology that can efficiently separate and sort the waste by using the conveyance belt and utilizing the suction force of air and the weight of the waste.

JP 2008-12051 A JP 2008-194624 A JP 2001-96233 A

  The problem to be solved by the present invention is that a mixture of lightweight soft plastics and hard plastics having a certain amount of weight is put into a conveyor device, and the air suction force and the weight of the waste There is no soft / hard plastic sorting device that can efficiently separate and sort using the above.

  The soft / hard plastic sorter according to the present invention has a lightly distributed soft plastic and a hard plastic with a certain amount of weight, with a transport belt that allows air to flow between the transport surface and the transport back surface. A transport conveyor device in which waste is introduced into the transport surface, and an air suction means that is disposed with the suction port facing the transport back surface of the transport belt and applies a suction force from the transport surface side to the transport back surface side. The soft plastics are transported while adsorbing to the transport surface of the transport belt by the suction force of the air suction means and discharged from the transport upper end. The main feature is that the soft plastics and the hard plastics are separated and selected by dropping and discharging.

  According to the first to third aspects of the present invention, suction from the transport surface side of the mesh conveyor belt toward the transport back surface side is performed by the air suction means with respect to the transport conveyor device adopting the mesh conveyor belt that is the transport belt in an inclined arrangement. Based on a simple configuration in which a force is applied, soft plastics are transported while adsorbing to the transport surface of the mesh conveyor belt 9 by the suction force of the air suction means 21, discharged from the transport upper end, and adsorbed by the suction force. The hard plastics that can not be obtained are dropped under the mesh conveyor belt by their own weight and released, making it possible to perform the automatic separation and selection of soft plastics and hard plastics extremely efficiently, including plastic garbage bags. Plastic plastics including plastic bags, wraps, thin plastic sheets etc., plastic Soft and hard with various beneficial effects such as improving the efficiency of sorting large amounts of waste containing hard plastics such as bottles, trays, plastic toys, and plastic fragments, reducing work time, and reducing manual labor. A plastic sorting device can be realized and provided.

FIG. 1 is a schematic front view of a soft / hard plastic sorting apparatus according to an embodiment of the present invention. FIG. 2 is a schematic side view of the soft / hard plastic sorting apparatus according to the present embodiment. FIG. 3 is a schematic cross-sectional view showing a part of the transport conveyor device and a part of the air suction means in the soft / hard plastic sorting device according to the present embodiment. FIG. 4 is a schematic explanatory view conceptually showing the separation / discrimination operation of soft plastics and hard plastics by the soft / hard plastic sorter according to the present embodiment.

  The present invention introduces waste containing a mixture of lightweight soft plastics and hard plastics with a certain amount of weight into a transport conveyor device, and efficiently separates them using air suction and waste weight. The purpose of providing a sorter for sorting soft and hard plastics is to place a mesh conveyor belt in an inclined arrangement, and waste containing a mixture of lightweight soft plastics and hard plastics with some weight is thrown into the transport surface. A conveying conveyor device, and an air suction means that is arranged with a suction port facing the conveyance back surface of the mesh conveyor belt and applies a suction force from the conveyance surface side to the conveyance back surface side, and the soft plastics Is sucked to the transfer surface of the mesh conveyor belt by the suction force of the air suction means, discharged from the upper end of the transfer, and absorbed by the suction force. Not by its own weight hard plastics that release by dropping below the mesh conveyor belt, was realized by the configuration for performing the soft plastics, separation sorting rigid plastics.

  Hereinafter, a soft / hard plastic sorter according to an embodiment of the present invention will be described in detail with reference to the drawings.

  A soft / hard plastic sorting apparatus 1 according to the present embodiment is installed in a building (or outdoor) where plastic sorting processing is performed. As shown in FIGS. And a device base 2 including a pair of vertical wall bodies 3a and 3b which are vertically spaced apart from the base 3 in a parallel arrangement, and are attached to the vertical wall bodies 3a and 3b. In addition, a transport conveyor device 4 in which waste 30 in which soft plastics 31 and hard plastics 32 are mixed is input to the transport surface, and air suction means 21 that applies a suction force to the waste 30. Have.

  The transport conveyor device 4 includes a transport conveyor unit 5 installed in an inclined arrangement between the vertical wall bodies 3 a and 3 b in the device mount 2 and a drive unit 6 of the transport conveyor unit 5.

The conveyor unit 5 includes a driving pulley 7a that is horizontally disposed and rotatably supported between the vertical wall bodies 3a and 3b at a high position on one end side of the vertical wall bodies 3a and 3b, and the vertical wall. In a low position on the other end side of the bodies 3a and 3b, the driven pulley 8 is supported in a horizontal arrangement and rotatably supported between the vertical wall bodies 3a and 3b, and the driving pulley 7a and the driven pulley 8 are inclined. And a mesh conveyor belt 9 which is a conveyor belt using, for example, a metal netting material or a metal punching plate material, which is placed over the arrangement.
The mesh conveyor belt 9 is shown in FIG. 1 with a cross cross line attached to a part thereof.

  The mesh conveyor belt 9 functions as a conveyance belt that allows air to flow between the conveyance surface and the conveyance back surface.

  The drive unit 6 is coaxial with the driving pulley 7a and is disposed on the outside of the vertical wall 3b, on the outside of the vertical wall 3b, and near the rotation driving pulley 7b. A drive motor 11 installed on a motor support plate 10 provided at a predetermined position, a motor pulley 12 connected to a drive shaft of the drive motor 11, and the motor pulley 12 and the rotary drive pulley 7 are stretched over. And a drive belt 13.

  The air suction means 21 is formed in a rectangular parallelepiped box shape having a plurality of slit-like openings 22a on the end surface facing the transport back surface side of the mesh conveyor belt 9, and is inclined to the transport back surface side of the mesh conveyor belt 9 And a suction box 22 provided with, for example, three air flow holes 22b at an interval inward from the opening 22a on the end surface on the vertical wall 3a side, and the suction box 22 integrally therewith. In addition, the end face facing the suction box 22 is in an open state, and is attached to a rectangular hole 3c provided in the vertical wall 3a and fixed together with the suction box 22 by the vertical wall 3a. A concentrated suction box 23 in the shape of a rectangular parallelepiped box supported, an air suction pump 24 disposed on the side of the apparatus base 2, and an outside of the concentrated suction box 23 A suction pipe 25 selected from any one of pipes, hoses, and ducts, for example, having one end faced in the concentrated suction box 23 through the end face and the other end connected to the air suction pump 24. Yes.

Then, by operating the air suction pump 24, the mesh conveyor belt 9 from the transport surface side to the transport back surface side, the opening 22a of the suction box 22, the air circulation hole 22b, the concentrated suction box 23, the suction pipe 25 The air suction force is applied to the flow path leading to the air suction pump 24.
The mesh shape and the mesh hole size in the mesh conveyor belt 9 are not particularly limited. For example, the mesh shape is a rhombus and the mesh hole size is 5 mm to 5 mm or less. be able to.

  Next, the separation / separation operation of the soft plastics 31 and the hard plastics 32 by the soft / hard plastic sorter 1 according to the present embodiment will be described with reference to FIG.

  In FIG. 4, soft plastics 31 such as plastic bags including plastic trash bags, wraps, and thin plastic sheets are represented by white shapes such as white clouds, plastic bottles, trays, plastic toys, plastics. The following description will be made assuming that the hard plastics 32 such as broken pieces are represented by a black square shape or a black diamond shape.

  In order to separate and sort the waste 30 in which the soft plastics 31 and the hard plastics 32 are mixed by the soft / hard plastic sorter 1 according to the present embodiment, first, the drive motor 11 is started. 3 and 4, the drive belt 13 and the mesh conveyor belt 9 are each run in the direction of the arrow.

In addition, the air suction pump 24 is started, and the mesh conveyor belt 9 from the transport surface side to the transport back surface side, the opening 22a of the suction box 22, the air circulation hole 22b, the concentrated suction box 23, the suction pipe 25, the air A suction force is applied to the flow path leading to the suction pump 24.
The suction force can be implemented by changing the blower according to the processing amount and processing capacity of the soft / hard plastic sorting device 1 according to this embodiment.

  In this state, as shown in FIG. 4, the waste 30 in which the soft plastics 31 and the hard plastics 32 are mixed is put on the conveying surface of the mesh conveyor belt 9 that is inclined.

  Thereby, soft plastics 31 such as plastic bags, wraps, thin plastic sheets, etc., out of the waste 30 put on the conveying surface of the mesh conveyor belt 9 are sucked by the operation of the air suction pump 24, The mesh conveyor belt 9 is attracted to the transport surface of the mesh conveyor belt 9 and reaches the upper end of the transport of the mesh conveyor belt 9. In this transport-like end region, the suction force no longer acts and is discharged to the outside of the transport conveyor device 4.

On the other hand, hard plastics 32 such as plastic bottles, trays, plastic toys, plastic debris, etc., which have a certain weight, out of the waste 30 put on the transport surface of the mesh conveyor belt 9 are contained in the air suction pump 24. The hard plastics 32 fall under the mesh conveyor belt 9 due to their own weight and are discharged below the conveyor device 4 because they cannot be attracted to the conveyor surface by the suction force by the operation.
The suction states of the soft plastics 31 and the hard plastics 32 are larger because the soft plastics 31 are softer and have a larger adsorption area, and the hard plastics 32 are harder and the adsorption area is smaller. Falls under its own weight.

  Thus, according to the soft / hard plastic sorting apparatus 1 according to the present embodiment, the mesh conveyor belt 9 is provided by the air suction means 21 with respect to the transport conveyor apparatus 4 adopting the mesh conveyor belt 9 in an inclined arrangement. The soft plastics 31 are transported while adsorbing to the transport surface of the mesh conveyor belt 9 by the suction force of the air suction means 21 based on a simple configuration in which a suction force from the transport surface side toward the transport back surface side is applied. The soft plastics 31 and the hard plastics 32 are automatically discharged by dropping the hard plastics 32 that cannot be adsorbed by the suction force by dropping under the mesh conveyor belt 9 due to their own weight. Separation and sorting can be performed very efficiently, and the efficiency of sorting and processing of a large amount of waste 30 can be improved. Shortening, it is possible to exert a beneficial effect mitigation etc. of various human manual.

  The present invention not only separates and discriminates wastes containing soft plastics and hard plastics as described above, but also classifies and discriminates wastes containing various miscellaneous waste items such as metallic empty cans and wood chips. The present invention can be applied to a waste plant to be performed.

DESCRIPTION OF SYMBOLS 1 Soft and hard plastic sorter 2 Apparatus mount 3 Base 3a Vertical wall 3b Vertical wall 3c Hole part 4 Conveyor apparatus 5 Conveyor unit 6 Drive unit 7a Drive pulley 7b Rotation drive pulley 8 Drive pulley 9 Mesh conveyor belt DESCRIPTION OF SYMBOLS 10 Motor support plate 11 Drive motor 12 Motor pulley 13 Drive belt 21 Air suction means 22 Suction box 22a Opening 22b Air distribution hole 23 Concentrated suction box 24 Air suction pump 25 Suction pipe 30 Waste 31 Soft plastics 32 Hard plastics

Claims (3)

A conveyor belt device in which a waste belt mixed with lightweight soft plastics and hard plastics with a certain amount of weight is placed on the conveyor surface, with a conveyor belt that allows air to flow between the conveyor surface and the conveyor back surface; ,
An air suction means that is arranged with the suction port facing the conveyance rear surface of the conveyance belt, and that exerts a suction force from the conveyance surface side to the conveyance rear surface side;
Have
The soft plastic is transported while being sucked to the transport surface of the transport belt by the suction force of the air suction means and discharged from the upper end of the transport, and the hard plastic that cannot be sucked by the suction force is dropped below the transport belt by its own weight. The soft and hard plastics sorting apparatus is characterized in that the soft plastics and hard plastics are separated and sorted by discharging them. Conveying conveyor device in which waste containing a mixture of lightweight soft plastics and hard plastics having a certain amount of weight is placed on the conveying surface, with the mesh conveyor belt inclined.
An air suction means that is arranged with the suction port facing the transfer back surface of the mesh conveyor belt, and that applies a suction force from the transfer surface side to the transfer back surface side;
Have
The soft plastics are transported while being adsorbed to the transport surface of the mesh conveyor belt by the suction force of the air suction means and discharged from the upper end of the transport, and the hard plastics that cannot be adsorbed by the suction force are below the mesh conveyor belt by their own weight. A soft and hard plastics sorting apparatus characterized in that the soft plastics and hard plastics are separated and sorted by dropping them into a container.   The soft plastics are plastic bags including plastic trash bags, wraps, thin plastic sheets, etc., and the hard plastics are plastic bottles, trays, plastic toys, plastic debris, etc. The soft / hard plastic sorter according to claim 1 or claim 2.

Images