JPH06121969A - Screening device - Google Patents

Abstract

PURPOSE:To screen small-sized refuse including materials convertible to resources, heavy objects and long-sized objects automatically by providing the outer periphery of a rotary drum rotating around its cross shaft with spiral screw blades and providing the upper side in the lateral part of these screw blades with a chuter for dropping and supplying garbage. CONSTITUTION:The rotary drum 2 which is supported rotatably around the cross shaft and the screw blades 3 which are spirally wound at a prescribed pitch L along the outer periphery of the rotary drum 2 and can introduce only the smallsized refuse A into the spacing S are provided. The chuter 4 for dropping and supplying the garbage diagonally upward in the diametral direction of the screw blades 3 is provided in proximity to the outer periphery of the screw blades 3. The rotary drum 2 is rotationally driven by a driving section 6. Consequently, the small-sized refuse A including the materials convertible to resources, the heavy objects B and the long-sized objects C can be previously fractionated and, therefore, the degradation in the screening efficiency of the materials convertible to resources and the in the bagging efficiency of the bagged refuse are prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention selects small articles such as bottles and cans contained in dust, long objects such as carpets and duvets, and heavy objects such as microwave ovens, cans and large toys. Regarding sorting equipment.

[0002]

2. Description of the Related Art Generally, household waste includes iron or aluminum cans, bottles, lightweight plastic bottles such as PET bottles. Such waste can be reused, and in particular, recently, since recycling of resources has been called for, selection and reuse of such recyclable materials have been emphasized.

Depending on the area, a method is adopted in which recyclable materials are sorted out from the garbage at home and thrown to a collection place, or sorted at the time of collection by a garbage truck. However, since the burden on each household and the burden on the collection worker increase, the above sorting may not be performed, and a sufficient sorting effect cannot be obtained. Therefore, conventionally, after collecting the garbage, each recyclable material is sorted. For example, magnetic metals such as iron are sorted by using a magnetic separator, and aluminum cans are sorted by making a difference between drop trajectories by a cross magnetic field at the front end of the belt conveyor. Also, round items such as bottles and lightweight resin bottles are sorted from the square items by rolling the inclined surface, and further, lightweight resin bottles are sorted using a wind sorter.

On the other hand, with regard to so-called bag-like garbage in which garbage is packed in bags, the bags are crushed by a bag-breaking machine before being separated into pieces.

[0005]

However, since the sorting of the above-mentioned resources is continuously carried out while collectively transporting the collected dust, long-sized objects such as carpets and futons mixed in the dust and Heavy objects such as microwave ovens, cans and large toys may also be supplied to each sorter. For this reason, there is a problem that the sorting efficiency of the recyclable materials is reduced due to the obstruction of the sorting of the recyclable materials due to these long objects and heavy objects.

[0006] Further, when the bag-breaking machine is supplied with the above-mentioned long objects or heavy objects, there is a problem that the bag-breaking efficiency is lowered. The present invention has been made in view of the above problems, and an object of the present invention is to provide a sorting device that can prevent the sorting efficiency of recyclable materials and the bag breaking efficiency of bag waste from being reduced.

[0007]

As a sorting device of the present invention for achieving the above object, there is provided a rotary drum rotatably supported around a horizontal axis and a spiral shape at a predetermined pitch along the outer circumference of the rotary drum. A screw blade that can be introduced into the pitch gap and is wound around, and provided near the outer periphery of the screw blade, and a shooter that supplies dust to the diagonally upper direction of the screw blade,
And a drive unit that rotationally drives the rotary drum.

[0008]

According to the sorting apparatus having the above structure, when the rotary drum is rotated in the predetermined direction by the drive unit and the dust is dropped and supplied diagonally upward in the radial direction of the screw blade through the shooter, the resources in the dust are collected. Small garbage containing a compound can be dropped to the lower side of the rotary drum through the pitch gap of the screw blade. Also,
The long object is conveyed around the axis of the rotating drum by the frictional force with the screw blade while being received by the outer periphery of the screw blade. Furthermore, since heavy items are heavy and have a small frictional force with the screw blade, the heavy object is conveyed in the axial direction by receiving the conveying force of the screw blade while being held between the screw blade and the shooter. To be done.

[0009] Therefore, it is possible to automatically sort small garbage including a recycled material, long-sized garbage, and heavy garbage simultaneously.

[0010]

Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments. 1 is a side view showing an embodiment of the sorting apparatus of the present invention, and FIG. 2 is a front view thereof. The sorting device includes a rotary drum 2 rotatably supported by a gantry 1 about a horizontal axis, a screw blade 3 spirally wound along the outer periphery of the rotary drum 2, and dust on the screw blade 3. The shooter 4 for dropping and supplying the water, the drive unit 6 for rotationally driving the rotary drum 2, and the like constitute the main part.

The rotary drum 2 is constructed by closing both ends of a body portion 21 made of a cylindrical body with a pair of side plates 22 and inserting a support shaft 23 into the pair of side plates 22. It is supported by the gantry 1 in a state of being oriented horizontally. The screw blade 3 is formed by spirally winding a strip plate having a predetermined width, and the inner circumference thereof is welded to the outer circumference of the rotary drum 2. The screw blade 3 is provided over the entire length in the axial direction of the rotary drum 2, and the pitch interval L and the height H thereof are such that a small garbage A including a recycled material such as bottles and cans is introduced into the pitch clearance S. It is set within a range in which it is possible and heavy objects B such as microwave ovens, cans, and large toys, and long objects C such as carpets and futons cannot be introduced.

The shooter 4 is a flat plate-like member for dropping the dust carried by the belt conveyor 7 obliquely upward in the radial direction of the screw blade 3, and in parallel with the busbar of the rotary drum 2 over the entire length of the busbar. Is provided. The screw blade 3 is supported so that the tilt angle thereof can be adjusted with respect to the column 11 that is erected on the gantry 1. Further, the lower end portion 41 of the shooter 4 is arranged close to the outer circumference of the screw blade 3.

The drive unit 6 is a motor 6 fixed to the gantry 1.
1, a first pulley 62 fixed to the rotary shaft of the motor 61, a second pulley 63 fixed to the support shaft 23 of the rotary drum 2, and a V wound around both pulleys 62, 63. And a belt 64. The drive unit 6 drives the rotary drum 2 to rotate counterclockwise in FIG. Furthermore, the back side of the rotary drum 2 (right side in FIG. 1)
A belt conveyer 8 that receives dust that has fallen through the pitch gap S of the screw blade 3 and conveys it to a predetermined portion is provided below. A collection canister Y is provided on the front side of the rotary drum 2 (on the left side in FIG. 1) to collect dust that has passed over the top 31 of the screw blade 3. Further, a collecting can Z for collecting the dust carried by the screw blade 3 is provided at the end of the screw blade 3 on the downstream side (the right side in FIG. 2) in the carrying direction.

With the above construction, of the dust that is supplied obliquely above the screw blade 3 via the shooter 4, the small dust A containing the recycled material is dropped through the pitch gap S of the screw blade 3. Then, it can be conveyed to a predetermined portion by the belt conveyor 8. In addition, heavy items such as microwave ovens, cans and large toys B
With regard to the above, since its own weight is heavy and the frictional force between it and the screw blade 3 is small, it is held between the lower end portion 41 of the shooter 4 and the outer periphery of the screw blade 3 without being transported around the axis X. In this state, it can be transported in the axial direction by the screw blade 3 and recovered by the recovery can Z. In addition, large items such as carpets and futons C
With respect to (1), while being received by the outer periphery of the screw blade 3, it can be transported around the axis X by the frictional force with the screw blade 3 and recovered by the recovery can Y.

As described above, the sorting apparatus can automatically sort the small waste A, the heavy article B, and the large article C containing the recyclable substances mixed in the dust simultaneously at the same time. At the time of sorting, there is no fear that the sorting work will be hindered by the heavy object B or the long object C. For this reason, it is possible to efficiently select the resources.

If the dust dropped and supplied by the shooter 4 stays just below the shooter 4, the sorting efficiency is lowered. Therefore, it is preferable to move the dust quickly by the screw blade 3 in the axial direction. In particular, it is preferable to increase the lead angle of the screw blade 3 and widen the pitch interval L. However, the larger the lead angle is, the more the screw blade 3 is tilted in the horizontal direction, so that the screw blade 3 has a higher probability of catching particularly small dust A in dust (see FIG. 3), On the contrary, dust may accumulate. Therefore, when the lead angle is increased, the screw blade 3 stands upright in the horizontal direction, and the axis X of the rotary drum 2 is lowered in the horizontal direction in FIG. It is preferable to incline by a predetermined angle θ.

FIG. 4 is a plan view of an essential part showing another embodiment. In this embodiment, the screw blade 3
Both sides of the central portion where the dust is dropped and supplied are reversely wound, and the lower end portion 41 of the shooter 4 is also wound.
A strip-shaped conveyance assisting member 5 is provided along the axial direction on both sides sandwiching the strip. According to this embodiment, the dust particles dropped and supplied from the shooter 4 can be quickly distributed to the left and right directions by the screw blade 3, so that the sorting efficiency can be further improved.

The sorting apparatus of the present invention is not limited to the above embodiment, and for example, the width of the shooter 4 in the embodiment shown in FIG. Various design changes can be made, such as arranging 5.

[0019]

As described above, according to the sorting apparatus of the present invention, it is possible to automatically sort small garbage, heavy objects, and long objects containing recyclable materials, so that heavy objects and long objects are mixed. As a result, it is possible to prevent a reduction in the sorting efficiency of the recyclable materials and a reduction in the bag breaking efficiency of the bag waste, which is a unique effect.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a sorting apparatus of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view of relevant parts showing a case where a lead angle of a screw blade is increased.

FIG. 4 is a plan view of an essential part showing another embodiment.

[Explanation of symbols]

 2 rotating drum 3 screw blade 4 shooter 6 drive unit X axis S pitch gap A recyclable material B heavy object C long object

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hironobu Tanao 6-45 Koshienguchi, Nishinomiya-shi, Hyogo Within Far East Development Co., Ltd. (72) Inventor Shunta Imai Hozumi, Hodogaya-ku, Yokohama-shi, Kanagawa 3-16th 12 (72) Inventor Yu Sugiyama 3-10-10 Kamirenjaku, Mitaka City, Tokyo (72) Inventor Haruo Ogura 824-1 Ozone, Yashio City, Saitama River

Claims (1)

[Claims] 1. A rotary drum rotatably supported around a horizontal axis, and a screw blade spirally wound at a predetermined pitch along the outer circumference of the rotary drum, and capable of introducing only small waste into a pitch gap. A sorting device comprising: a shooter that is provided in the vicinity of the outer periphery of a screw blade and that supplies dust to and obliquely upward in the radial direction of the screw blade; and a drive unit that rotationally drives a rotating drum.