JPH0755047Y2 - Coarse crusher for waste plastic processing equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher for crushing waste plastic used in a waste plastic treatment device for heating and melting waste plastic.

[0002]

2. Description of the Related Art As a waste plastic treatment device, there is a waste plastic treatment device for crushing waste plastic roughly and heating and melting the crushed waste plastic.

This type of waste plastic processing apparatus is provided with a crusher having a built-in cutter, and the waste plastic that has been input is crushed and then conveyed. A melting machine is attached to the crusher via a vertical feed screw conveyor. The melting machine is provided with a heating / melting section, and the heating / melting section is further equipped with a hot air generator including a burner and a suction blower. The waste plastics after being crushed and conveyed into the melter are heated and melted by the hot air from the hot air generator, and the melted waste plastics are dropped from the drop port of the melter and are stored in a container and cooled and solidified.

By the way, the coarse crusher of this type of waste plastic processing apparatus has a container having an open upper side, and a cutter consisting of a rotary blade and a fixed blade is arranged inside the container. The rotary blade is fixed to a horizontal shaft that is rotatably supported at a substantially middle portion of the outer wall of the container in the width direction. The fixed blade is arranged below the shaft so as to correspond to the rotary blade. The waste plastic P is roughly crushed between the rotary blade and the fixed blade. Further, below the cutter, there are provided a screw conveyor and a conveyance guide having a substantially V-shaped cross section. The transport guide guides and holds the crushed waste plastic P, and the screw conveyor conveys the crushed waste plastic P to the outlet formed on the outer wall of the container by rotationally driving the waste plastic P.

As described above, the conventional crusher used in the waste plastic processing apparatus has a structure in which the components such as the cutter and the screw conveyor are arranged stepwise in the vertical direction, so that the height of the apparatus is relatively high. Since the size of the waste plastic is high and the waste plastic input port is the upper end of the apparatus, it is difficult to load the heavy and bulky waste plastic into the crusher. In particular, when this crusher was installed at a high position, the input port was necessarily at a high position, and workability was further deteriorated.

[0006]

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention is to provide a coarse crusher for a waste plastic processing device in which the height of the device is reduced and the waste plastic can be easily charged and the workability is improved. Is the purpose.

[0007]

A waste crusher for a waste plastics processing apparatus according to claim 1 is used in a waste plastics processing apparatus for heating and melting waste plastics, and provided waste plastics are provided in a box shape. A rotary crusher for a waste plastic processing device that crushes and transports the crushed material inside a machine body, wherein the rotary blade is fixed to a rotary shaft that is horizontally supported between the side walls of the machine body and that rotates together with the rotary shaft; A fixed blade that is fixed to the bottom wall of the machine body corresponding to the blade and crushes the waste plastic by meshing with the rotary blade, and the rotary blade is lateral to the rotary blade and the fixed blade and of the rotary blade with respect to the fixed blade. It is provided on the downstream side in the rotation direction and near the bottom wall of the machine body below the rotary blades, substantially parallel to the rotary shaft, and transports the waste plastic crushed by the rotary blades and fixed blades in the axial direction. With a screw conveyor and a side of the rotary blade and the fixed blade and a side wall of the machine side opposite to the side-feeding screw conveyor, the charging port is provided opposite to the rotary blade, and a waste plastic can be charged into the machine body. A backflow prevention plate fixed to the ceiling wall of the fuselage on the side opposite to the fixed blade in correspondence with the rotary blade, and preventing the waste plastic from moving to the input port due to the rotation of the rotary blade. Is characterized by.

[0008]

[0009]

[0010]

In the coarse crusher for the waste plastic treatment device according to the first aspect, the waste plastic is thrown into the machine body through the charging port. Here, when the rotary blade is rotated, the rotary plastic meshes with the fixed blade, whereby the waste plastic is crushed. The coarsely crushed waste plastic is conveyed by a horizontal feed screw conveyor provided near the bottom wall of the machine body.

As described above, since the coarse crusher has a structure in which the components such as the rotary blade and the horizontal feed screw conveyor are arranged in parallel, the height of the device is relatively low, and the waste plastic input port is also provided. Since the apparatus is located on the side surface, that is, at a low position, even heavy and bulky waste plastic can be easily put into the crusher and workability is improved.

[0012]

[0013]

Further, in the coarse crusher for the waste plastic processing device, the rotary blade after meshing with the fixed blade passes through the backflow prevention plate. For this reason, even if the roughly crushed waste plastic adheres to the rotary blade and rotates together with the rotary blade, it is separated from the rotary blade by this backflow prevention plate, and the waste plastic moves to the input port due to the rotation of the rotary blade. Be blocked.

Therefore, the scattering of the waste plastic from the charging port due to the rotation of the rotary blade can be prevented more reliably.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a sectional view showing the overall construction of a waste plastic processing apparatus 10 using a crusher 12 for a waste plastic processing apparatus according to the present invention. Also, FIG.
1 shows a sectional view of the crusher 12 taken along the line II-II.

The waste plastic processing apparatus 10 comprises a crusher 12, a vertical feed screen conveyor 13, a melting machine 14 and a hot air generator 16.

The crusher 12 is provided with a box-shaped machine body 18 having a relatively small height, and the rotary blade 2 is provided inside the machine body 18.
A cutter 24 including 0 and a fixed blade 22 is arranged. The rotary blade 20 is fixed to a horizontal shaft 30 which is rotatably supported at substantially intermediate portions in the width direction of the side walls 26 and 28 of the machine body 18. The shaft 30 is the motor 3 mounted on the side wall 26.
It is rotationally driven by 2, and the rotary blade 20 is thereby rotated. As shown in FIG. 2, the rotary blade 2
Zeros are fixed as a set of three at intervals of 120 degrees in a plane perpendicular to the axis of the shaft 30, and a plurality of sets are arranged at regular intervals along the longitudinal direction of the shaft 30.

The fixed blade 22 is disposed below the shaft 30 and is the rotary blade 20.
It is arranged corresponding to. The fixed blade 22 is formed of a flat plate-like member, and is fixed to a sink plate 42, which will be described later and is inclinedly arranged on the bottom wall 40 of the machine body 18. The fixed blade 22 is formed with a plurality of elongated holes 34 corresponding to the rotary blade 20. The width dimension of the long hole 34 is slightly wider than the width dimension of the rotary blade 20, and the rotary blade 20 is inserted into the long hole 34 when the rotary blade 20 is rotated.
As a result, the waste plastic P is roughly crushed by the rotary blade 20 and the fixed blade 22 as the rotary blade 20 rotates.

On the other hand, as shown in FIG. 2, the front wall 44 of the machine body 18 facing the rotary blade 20 is formed with a charging port 46, and the waste plastic can be charged into the machine body 18 from the charging port 46. . In addition, the input port 46 has a hopper lid 50.
Is attached. The hopper cover 50 is rotatably supported by a hinge 52 on a lower peripheral wall of the input port 46, and can open and close the input port 46 by rotating. A pair of side plates 54 is fixed to the hopper lid 50 at both ends in the width direction (left and right direction in FIG. 1). The side plate 54 has a role of preventing the waste plastic P from being dropped into the input port 46 while being placed on the hopper lid 50 when the hopper lid 50 is opened.

One end of the above-mentioned sink plate 42 is connected to the lower end edge of the charging port 46 (hence, in the vicinity of the hinge 52 of the hopper lid 50). The other end of the sink plate 42 is the body 18
Attached to the bottom wall 40 of the rotary blade 20. Therefore, the sink plate 42 is arranged so as to be inclined downward from the charging port 46 along the rotation direction of the rotary blade 20. The fixed blade 22 is fixed to the middle portion of the sink plate 42.
The waste plastic P that has been charged into the machine body 18 from the charging port 46 slides down along the sink plate 42 in sequence and the fixed blade 2
You will be guided to 2.

The other end of the sink plate 42 is curved in an arc shape, and the transverse feed screw conveyor 35 is arranged corresponding to the other end. Horizontal feed screw conveyor 35
Is located below the cutter 24 (rotary blade 20, fixed blade 22) and is supported between the side walls 26 and 28 of the machine body 18 in parallel with the axis 30 of the rotary blade 20. The lateral feed screw conveyor 35 is a motor 60 mounted on the side wall 26.
The waste plastic P, which is rotatably driven by the cutter 24 and is roughly crushed by the cutter 24, can be conveyed to the outlet 62 formed in the side wall 28 of the machine body 18.

A backflow prevention plate 58 is fixed to the ceiling wall 56 of the machine body 18 on the side opposite to the fixed blade 22. The backflow prevention plate 58 is located within the rotation trajectory of the rotary blade 20,
It is formed of a flat member similar to the fixed blade 22. The backflow prevention plate 58 is formed with a plurality of elongated holes 59 corresponding to the rotary blade 20. The width of the long hole 59 is the rotary blade 20.
Is slightly wider than the width of the rotary blade 20 and can pass through the long hole 59 when the rotary blade 20 is rotated. When the rotary blade 20 passes through the slot 59, the waste plastic P attached to the rotary blade 20 is forcibly removed.
Input port 46 for waste plastic P accompanying rotation of the rotary blade 20
It is a structure that prevents movement to.

On the other hand, a guide communication portion 63 is connected to the outside of the exit 62 of the machine body 18. The guide communication portion 63 projects obliquely downward from the outlet 62, and the tip of the guide communication portion 63 has a vertical cylindrical body 66 of the vertical feed screw conveyor 13.
It is connected to the. Inside the vertical cylinder 66, a screw 68 is arranged along the longitudinal direction. The screw 68 is rotatably driven by a motor 70 attached to the upper end of the vertical cylindrical body 66, and conveys the coarsely crushed waste plastic P upward. Vertical cylinder 6
On the side wall near the upper end of 6, a cylindrical shout 72 directed obliquely downward is attached.
The waste plastic P that has been conveyed above is dropped from the tip of the shout 72.

The melting machine 14 is substantially box-shaped as a whole and comprises a supply section 74, a melting section 76 and a cooling section 78.
A charging port 80 is formed near the corner of the upper end of the supply unit 74 on the side of the crusher 12, and a shout 72 of the vertical feed screw conveyor 13 is inserted into the charging port 80. Therefore, the waste plastic P conveyed by the vertical feed screen conveyor 13 is supplied to the supply unit 74 via the input port 80.
It can be thrown in.

Further, an exhaust chamber 82 is provided in the upper part of the supply part 74 and in the vicinity of a corner opposite to the charging port 80.
An exhaust blower 92 is attached to the outside of the exhaust chamber 82 so that the exhaust gas inside the melter 14 can be exhausted to the outside.

Below the supply section 74, a melting section 76 is provided. Inside the melting portion 76, a funnel-shaped melting furnace 94 whose opening cross section decreases downward is provided.
A drop port 96 is formed at the lower end of the melting furnace 94, and a large number of horizontally elongated hot air inlets 100 are formed in the furnace wall 98. At the upper end of the hot air inlet 100, a hot air inlet cover plate 102 is formed that protrudes obliquely downward toward the inside of the melting furnace 94, and the waste plastic P that has fallen from above is the hot air inlet 100. From the outside of the melting furnace 94.

A hot air stagnation chamber 104 is formed between the melting furnace 94 and the side wall 103 of the melting portion 76, and a hot air generator 16 is connected via a connecting pipe 106.

The hot air generator 16 is formed in a box shape,
A feed port 44 is formed on one side wall. One end of a connection pipe 106 is connected to the feed port 44 to connect the hot air stagnation chamber 104 and the hot air generator 16. A burner 108 and a blower 110 are arranged in the hot air generator 16. The burner 108 is arranged so as to face the feed port 44, and injects flame toward the feed port 44. On the other hand, the suction port 46 is provided on the other side wall opposite to the feed port 44.
Are formed. Therefore, when the blower 110 operates, air flows into the airframe 42 through the suction port 46.

On the other hand, a stopper 112 is attached to the drop port 96 of the melting furnace 94. This stopper 1
The reference numeral 12 projects radially inward from the lower end of the drop port 96 of the melting furnace 94 toward the inside of the lower side, so that the unmelted waste plastic P is caught.

Below the stopper 112, a cooling unit 78 is provided for cooling and solidifying the melted waste plastic P. A container 114 is arranged inside the cooling unit 78 to accommodate the waste plastic P that has flowed down from the drop port 96 of the melting furnace 94. Also,
A door 116 used when replacing the container 114 is provided on the front surface side of the cooling unit 78.

Next, the operation of this embodiment will be described. In the coarse crusher 12 and the waste plastic treatment device 10 having the above-described configurations, when the melting process of the waste plastic P is started, the waste plastic P such as styrofoam, polyethylene, polyvinyl chloride, and polypropylene is put into the coarse crusher 12.
That is, when the waste plastic P is loaded, the hopper lid 50 is rotated to open the loading port 46, and the waste plastic P is loaded into the machine body 18 from the loading port 46. Here, the hopper lid 5
Since the side plate 54 is erected at 0, the waste plastic P, which is placed on the hopper lid 50 and is fed to the feeding port 46, does not fall off, and the feeding operation is facilitated.

After the waste plastic P is charged, the hopper lid 50 is rotated again to close the charging port 46, and the cutter 24 is operated. When the cutter 24 operates, the rotary blade 20 rotated by the motor 32 meshes with the fixed blade 22, and the waste plastic P that is thrown in and slides down along the sink plate 42 is sandwiched and crushed. The waste plastic P that has been roughly crushed passes through the long hole 34 of the fixed blade 22, is guided by the flow plate 42, and moves to the horizontal feed screw conveyor 35 at the lower end portion of the flow plate 42.

The waste plastic P after being crushed, which has reached the horizontal feed screen conveyor 35, is conveyed to the exit 62 of the machine body 18 by the screen conveyor 35 driven by the motor 60. The waste plastic P carried out from the outlet 62 passes through the guide communication portion 63 and is fed to the lower end portion of the vertical feed screw conveyor 13.

As described above, since the crusher 12 has a construction in which the components such as the rotary blade 20 and the horizontal feed screw conveyor 35 are arranged in parallel, the height of the machine body 18 is relatively low, and the waste plastic Since the input port 46 of P is also formed in the front wall 44 of the machine body 18, that is, at a low position, even a heavy and bulky waste plastic P can be easily introduced into the machine body 18 of the crusher 12. , Workability is improved.

Further, since the backflow prevention plate 58 is arranged inside the body 18 of the crusher 12, the rotary blade 20 after engaging with the fixed blade 22 passes through the backflow prevention plate 58. Therefore, even if the waste plastic P that has been roughly crushed adheres to the rotary blade 20 and rotates together with the rotary blade 20, the backflow prevention plate 58
Is separated from the rotary blade 20, and the movement of the waste plastic P in the direction of the input port 46 due to the rotation of the rotary blade 20 is blocked. Therefore, in combination with the closing of the input port 46 by the hopper lid 50, scattering of the waste plastic P from the input port 46 due to the rotation of the rotary blade 20 is reliably prevented.

The crushed waste plastic P sent to the lower end of the vertical feed screw conveyor 13 is the motor 7
It is conveyed above the vertical feed screen conveyor 13 by the screen 68 driven by 0, and
And is dropped into the melting machine 14. Supply unit 7 of the melting machine 14
4 and the melting furnace 94, a predetermined amount of roughly crushed waste plastic P is deposited.

On the other hand, in the hot air generator 16, the burner 108
When the blower 110 is operated, the outside air is sucked. The air flowing into the hot air generator 16 is heated by the burner 108, is sent into the hot air stagnant chamber 104 via the connecting pipe 106, and is further sent from the hot air stagnant chamber 104 into the melting furnace 94. At the same time, the hot air is melted in the melting furnace 94.
The furnace wall 98 is heated.

As a result, the waste plastic P accumulated in the supply section 74 of the melting machine 14 and the melting furnace 94 is directly heated by the hot air and indirectly by the heat transmitted through the furnace wall 98 of the melting furnace 94. It is melted by receiving a heating effect.
The molten waste plastic P is melted by its own weight in the melting furnace 94.
It flows down to the cooling part 78 from the falling port 96 of the. At this time, since the waste plastic P that has not been melted is caught on the stopper 112, the container 114 of the cooling unit 78 is melted until it melts.
It doesn't run down. Also, when melting, waste plastic P
Exhaust of gas and the like generated from the above is discharged from the upper exhaust chamber 82 to the outside of the melter 14 by an exhaust blower 92.

The melted waste plastic P that has flowed down from the drop port 96 of the melting furnace 94 is collected in the container 114 of the cooling unit 78, where it is naturally air-cooled and solidified. Also, the container 11
When waste plastic P is accumulated in 4, the cooling unit 78
The door 116 is opened and the container 114 is taken out.

As described above, in the crusher 12, since the machine body 18 is constructed to be low, and the input port 46 for the waste plastic P is also formed in the front wall 44 of the machine body 18 to be in a low position, the heavy and bulky waste plastic machine is provided. Even if it is P, it can be easily put into the machine body 18, and the workability is improved. Further, since the side plate 54 is erected on the hopper lid 50,
The waste plastic P input to the input port 46 does not fall off, and the input operation becomes easy. Further, since the backflow prevention plate 58 is arranged in the machine body 18, the waste plastic P that has been roughly crushed does not adhere to the rotary blade 20,
Scattering from the charging port 46 is reliably prevented.

[0042]

As described above, the coarse crusher for the waste plastic processing apparatus according to the present invention has the following effects.

In the waste crusher for the waste plastic treatment device according to the first aspect, the height dimension of the device can be reduced, and the waste plastic input port is also at a low position. Therefore, the waste plastic is a heavy and bulky waste plastic. However, it can be easily put into the crusher, and the workability is improved.

[0044]

Further, in the crusher for the waste plastic processing device, the crushed waste plastic does not adhere to the rotary blade, and the scattering of the waste plastic from the charging port due to the rotation of the rotary blade is reliably prevented. It

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an overall configuration of a waste plastics processing apparatus using a coarse crusher for the waste plastics processing apparatus according to the present invention.

FIG. 2 is a cross-sectional view of the crusher taken along the line II-II in FIG. 1 showing a cutter.

[Explanation of symbols]

 10 waste plastic processing device 12 coarse crusher 18 machine body 20 rotary blade 22 fixed blade 24 cutter 30 axis 35 side-feeding screw conveyor 42 sink plate 46 input port 50 hopper lid 54 side plate 58 backflow prevention plate P waste plastic stick

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Minoru Sasahara 404 Noomori, Oomori, Tendo, Yamagata Prefecture Yamamoto Manufacturing Co., Ltd. (56) (JP, B2) JP-B-57-15529 (JP, B2)

Claims (1)

[Scope of utility model registration request] 1. A coarse crusher for a waste plastic treatment device, which is used in a waste plastic treatment device for heating and melting waste plastics, and which crushes the introduced waste plastics in a box-shaped machine and conveys the waste plastics. A rotary blade that is fixed to a rotary shaft that is horizontally supported between the side walls of the machine body and that rotates with the rotary shaft; and a rotary blade that is fixed to the bottom wall of the machine body and that meshes with the rotary blade. the rotation of the waste plastic and the fixed blade to be crushed, the body bottom wall near the lower than the downstream side in the rotational direction, yet the rotary blade of the rotary blade relative to the rotary blade and the lateral side and the fixed blade of the fixed blade by axis substantially parallel to provided, the rotary blade and the fixed blade and the transverse feed subscription Yu conveyor for conveying the granulated by waste plastics in the axial direction, feeding a laterally and the horizontal of the rotary blade and the fixed blade So as to face the rotary blade and the subscription Yu conveyor body side wall on the opposite side
A slot provided for throwing waste plastic into the machine body and a rotary blade on the machine body ceiling wall opposite to the fixed blade.
Of the waste plastic due to the rotation of the rotary blade.
And a backflow prevention plate for preventing movement to the charging port, a coarse crusher for a waste plastic processing device.