JPH0819746A - Volume reduction device of plastic waste - Google Patents

Abstract

PURPOSE:To make it possible to reduce the volume of crushed plastic waste using a small-size upright device and on the other hand, discharge fine crushed fragments of specified size when crushing the plastic waste to decrease its volume using a mechanized device. CONSTITUTION:A rotary blade 6 which rotates horizontally by an electric motor is provided below a hopper 1 into which plastic waste is charged, and a fixed blade and a screen 3 are engaged with each other above and below the rotary blade 6 to shred the plastic waste by a cutter action. In addition, a power transmission between the electric motor and the rotary blade 6 is achieved by forming pulleys 15, 16 on the outer periphery of an installation ring 14 for the rotary blade 6, so that the efficiency of power transmission is enhanced.

Description

Detailed Description of the Invention

[0001]

[Industrial application] When recovering plastic waste such as PET bottles, it is necessary to reduce the volume in order to reduce the recovery cost. The present invention provides a volume-reducing device that cuts into small pieces with a mechanical device, and particularly provides a small-sized and inexpensive device that can be used in general households and convenience stores.

[0002]

2. Description of the Related Art As a mechanical volume reducing device for waste, a crusher type device by meshing gear-shaped blades is known. However, since this conventional device requires high pressure, the driving device itself becomes large, while the device structure also has a robust structure that can withstand these strengths.
The device is large and costly, and a large installation area is required because the drive shaft of the device is horizontal. Therefore, it was exclusively for large-scale customers such as factories.

On the other hand, the waste crushed and discharged from the conventional device is not crushed by the crusher system so that the size of the waste does not become constant. When it is reused, a crushing process for adjusting the size is required again. I was trying.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the conventional crusher type apparatus, and to reduce the installation area, that is, the apparatus that can be used in general households or convenience stores. The present invention provides a device having features such as small size and low cost, on the other hand, pulverized products being discharged in a fine and constant size, and re-use does not require a pulverization step again.

[0005]

The volume-reducing device of the present invention reduces the volume of plastic waste such as PET bottles by a cutter system in which it is cut with a blade, so that the power source of low output can be obtained. This is possible with a small electric motor, and the structural strength of the device is significantly smaller than that of the conventional device. As a result, the device can be downsized and the cost can be significantly reduced. In addition, the drive shaft is oriented vertically so that the installation area is small and there is no need to worry.

[0006]

The volume reducing device of the present invention comprises a hopper 1 for throwing in waste, a cutter device 2, a screen 3, and a storage case 4 provided below the hopper 1. The cutter device 2 includes a fixed blade 5 and a screen 3 provided below the hopper 1, a rotary blade 6 that rotates and slides with the fixed blade 5, and an electric motor 7 synchronized with the rotary blade 6. When the waste is put into the hopper 1, the waste is continuously cut by the lower cutter device 2, passes through the through hole 8 of the screen 3, and is discharged and stored in the storage case 4.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments of the drawings.
The hopper 1 shown in FIGS. 1 and 2 is attached to the upper part of the machine frame 9. The cutter device 2 includes a fixed blade 5 which is horizontally mounted below the hopper 1 and has mounting portions 10 at both ends fixed to a machine frame 9, and a rotary blade 6 which slides and rotates below the fixed blade 5.
And a screen 3 mounted on the machine frame 9 and slidingly rotating on the upper surface of the rotary blade 6, and an electric motor 7 for synchronously rotating the rotary blade 6.

The rotary blade 6 is composed of a combination of two blades that are offset from the center by a predetermined angle when viewed from the plane, and the blade 11 is formed on the side edge in the rotational direction that slides on the fixed blade 5 and the screen 3. ing. Furthermore, the mounting portions 12 at both ends are
It is fixed to a mounting ring 14 provided inside the machine frame 9 via a bearing device 13 so as to be horizontally rotatable.

A pulley 15 is integrally formed on the outer periphery of the mounting ring 14, while a pulley 16 and a belt 17 on the electric motor 7 side are formed.
Have been synced with. Alternatively, the pulleys 15 and 16 may be used as gears and synchronized with a chain or a timing belt. The screen 3 is fixed to the machine frame 9 so that its upper surface slides on the lower blade 11 of the rotary blade 6. This screen 3 has a blade 1 at the edge of the hole as shown in FIGS.
A large number of through holes 8 forming holes 8 are formed, and the holes are attached with the lower surface side shown in FIG. 11 facing upward. As shown in FIGS. 4 to 6, the rotary blade 6 has a blade 11 formed by curving the side surface in the rotational direction. When mounting on the mounting ring 14, the blades 11 and 11 are fixed with bolts or the like through the stop holes 19 of the mounting portion 12 so that the blades 11 and 11 are on the upper side and the lower side, respectively.

As shown in FIG. 7 to FIG. 9, the fixed blade 5 has a blade 20 formed on the edge portion of the rotary blade 6 facing the blade 11, and through the stop holes 22 of the mounting portions 10 at both ends. It is fixed to the machine frame 9 with bolts or the like.

Reference numeral 23 denotes a guide plate that is fixedly installed on the side surface of the fixed blade 5 opposite to the blade 20, and is installed upright in a direction in which it faces the rotation of the rotary blade 6. Reference numeral 24 denotes a caster attached to the lower surface of the machine frame 9.

With the above construction, when waste is put into the hopper 1, it is moved to the fixed blade 5 side by the rotary blade 6 and the guide plate 2 is moved.
While being pressed downward by the inclined portion of 3, the upper blade 11 continuously cuts. In this cutting process, the object inserted into the through hole 8 of the screen 3 is further finely cut by the lower blade 11 and the blade 18 of the through hole 8 and dropped and stored in the lower storage case 4.

The storage case 4 is slidably provided in the machine frame 9, and as shown in FIG. 3, when the crushed waste is full, it is pulled out in the direction of the arrow and discharged. 18th
As shown in the figure, the rotary blade 6 is not a combination of two,
It is also possible to form one blade without shifting the angle and form the blades on the upper and lower edges, respectively.

12 to 17 show an embodiment in which the rotary blade 6 and the fixed blade 5 are provided with an uneven blade edge 25. In this case, since the concave-convex portion of the blade tip 25 bites into the waste material to capture and cut it, efficient operation is performed.

FIG. 19 shows an apparatus in which the blade 18 is not formed in the through hole 8 of the screen 3 and a slight gap is provided between the rotary blade 6 and the rotary blade 6. In this case, the cutting action is performed only by the fixed blade 5 and the rotary blade 6, and an object smaller than the through hole 8 of the screen 3 passes through the screen 3 and falls into the storage case 4.

[0016]

[Effects] The present invention having the above-described structure and operation can be used in general households and small-scale consumers such as convenience stores because the apparatus is downsized and the cost is reduced.

In particular, since it is a vertical type device in which the rotary blade 6 and the fixed blade 5 are combined in the vertical direction, the installation area is small, and the transmission structure without the central drive shaft eliminates the waste cutting action. The operation of the electric motor 7 can be done smoothly and the waste of which the volume is difficult to reduce, such as plastic bottles, can be cut with a blade so that it can be efficiently processed into certain pieces and reused. This does not require a crushing step again.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a volume reducing device according to the present invention.

FIG. 2 is a plan view of the same.

[Fig. 3] Fig. 2 is a plan view showing a state in which a hopper and a guide plate are removed.

FIG. 4 is a plan view of a rotary blade.

FIG. 5 is a front view of the same.

FIG. 6 is a sectional view taken along the line AA of FIG.

FIG. 7 is a plan view of a fixed blade.

FIG. 8 is a front view of the same.

FIG. 9 is a sectional view taken along the line BB of FIG. 7.

FIG. 10 is a plan view of the screen.

FIG. 11 is a sectional view taken along line C-C of FIG.

FIG. 12 is a plan view showing another embodiment of the rotary blade.

FIG. 13 is a front view of the same.

FIG. 14 is a cross-sectional view taken along the line DD of FIG.

FIG. 15 is a plan view showing another embodiment of the fixed blade.

FIG. 16 is a front view of the same.

FIG. 17 is a sectional view taken along line EE in FIG.

FIG. 18 is a vertical sectional view of an apparatus showing an example in which one rotary blade is used.

FIG. 19 is a vertical cross-sectional view of the main parts of the device showing an example in which the screen does not form a blade. 1 ... Hopper, 2 ... Cutter device, 3 ...
・ Screen, 4 ... Storage case, 5 ... Fixed blade,
6 ... Rotating blade, 7 ... Electric motor, 8 ... Through hole, 9 ... Machine frame, 11 ... Blade 13 ... Bearing device 14 ... Mounting ring, 15,
16 ... Pulley 20 ... Blade

Claims (5)

[Claims] 1. A hopper provided on an upper part of the apparatus, a fixed blade horizontally fixed below the hopper, and a blade portion slidably rotatably provided below the fixed blade to rotate an electric motor. A waste volume reducing device comprising: a rotary blade that is synchronized, a screen disposed below the rotary blade, and a storage case provided below the screen. 2. A hopper provided on the upper part of the apparatus, a fixed blade horizontally fixed below the hopper, and a screen having blades formed on the upper edge of a large number of through holes arranged below the fixed blade. A rotary blade that is provided between the fixed blade and the screen, and has blades provided at the upper and lower edges of the fixed blade and the respective blades of the through holes of the screen so as to be slidably rotatable and synchronized with the rotation of the electric motor; A volume reduction device for waste, comprising a storage case provided below the screen. 3. The rotary blade is laterally fixed to a mounting ring rotatably supported by a machine frame via a bearing device, and the mounting ring integrally has a pulley or a gear formed on the outer periphery thereof, and is provided on the electric motor. The volume reduction device for waste according to claim 1 or 2, characterized in that they are synchronized via a pulley or a gear. 4. The rotary blade is composed of two blades, each blade being combined with the fixed blade and the blade of the through hole of the screen so as to slide on the upper and lower sides. Waste volume reduction equipment. 5. The waste volume reduction device according to claim 1, wherein the fixed blade and the rotary blade have concave and convex cutting edges.