JP2523494Y2 - Waste plastic treatment equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste plastic processing apparatus for melting and solidifying waste plastics by heating and cooling.

[0002]

2. Description of the Related Art Conventionally, there has been used a waste plastic treatment apparatus which heats and melts unnecessary waste plastic, and cools and solidifies the molten waste plastic. In this type of waste plastic processing apparatus, a melting section that melts waste plastic by hot air and discharges the melted waste plastic downward from a discharge port, and a waste section provided below the fusion section and discharged from a discharge port. A cooling unit is provided for receiving and cooling the plastic in a container (for example, see Japanese Utility Model Application Laid-Open No. 4-13312, which discloses a waste plastic processing apparatus already devised by the present applicant).

[0003]

However, in the case of the structure disclosed in the above-mentioned publication, after the waste plastic is allowed to cool, the container containing the waste plastic can be taken out of the apparatus by being provided at the lower part of the side wall of the apparatus. The operator has to open the door manually, which is troublesome.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a waste plastic processing apparatus which can save the trouble of opening and closing a door when removing a container.

[0005]

SUMMARY OF THE INVENTION A waste plastic processing apparatus according to the present invention melts waste plastic and discharges the melted waste plastic from a discharge port provided at a lower end portion. A cooling unit that is provided below and receives and cools the waste plastic discharged from the discharge port with a container disposed therein, and a lid for opening and closing the container that is openably and closably provided in the cooling unit. The discharge port is provided so as to be openable and closable. The opening and closing body permits discharge of the molten waste plastic in an open state, and prevents the discharge of the molten waste plastic in a closed state. Operating means for switching to any of the above, the operating means and the lid are connected, and when the opening / closing body is closed by the operating means, the lid is opened, and the operating means It is characterized by having, an interlocking means for the closed state of the lid when the serial opening and closing member is opened.

[0006]

According to the above construction, when the waste plastic is melted, the opening / closing body is opened by the operating means. Accordingly, the discharge port provided at the lower end of the melting portion is opened, and discharge of the waste plastic is allowed. Also,
In this state, the lid provided to be openable and closable on the cooling part is closed by the interlocking means for connecting the operating means and the lid.

On the other hand, when the melting process of the waste plastic is completed or the temporary melting process is stopped and the container containing the waste plastic cooled by the cooling part is taken out, the opening / closing body is closed by the operating means. It is said. Therefore, in this state, waste plastic is prevented from being discharged.
In this state, the lid is opened by the interlocking means. Therefore, the container can be taken out.

As described above, according to the present invention, the lid is automatically opened when the container containing the waste plastic after cooling is provided with the interlocking means interlocking with the operation of the operating means. Therefore, it is not necessary to open and close the lid when removing the container.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A waste plastic treatment apparatus 10 according to an embodiment of the present invention will be described below with reference to FIGS.

FIG. 3 is a sectional view showing the entire structure of the waste plastic processing apparatus 10. As shown in FIG. The waste plastic processing apparatus 10 includes a crusher 12, a melting machine 14, and a hot air generator 16.

The crusher 12 has a container 18 having an open upper side, and a cutter 24 including a rotary blade 20 and a fixed blade 22 is arranged at a substantially intermediate portion inside the container 18. Rotary blade 2
Numeral 0 is fixed to a horizontal shaft 30 rotatably supported at substantially the center of the side walls 26 and 27 of the container 18. The shaft 30 is driven to rotate by a motor 28 attached to the side wall 26, whereby the rotary blade 20 is rotated. The rotary blade 20 is placed 9 in a plane perpendicular to the axis of the shaft 30.
Each set of four is fixed at 0 degree intervals, and
Are arranged at regular intervals along the longitudinal direction of. Correspondingly, the fixed blade 2 is provided below the shaft 30.
2 are arranged. The fixed blade 22 is formed of a flat member, and has a plurality of long holes 32 corresponding to the rotary blade 20. The width of the elongated hole 32 is slightly larger than the width of the rotary blade 20, and the rotary blade 20 enters the elongated hole 32. Therefore, the rotary blade 2
When 0 is rotated, the waste plastic P is coarsely crushed between the rotary blade 20 and the long hole 32 of the fixed blade 22.

Below the cutter 24 is a bottom 34 of the container 18, and the bottom 34 has a substantially V-shaped cross section. For this reason, the waste plastic P crushed by the cutter 24 collects at the center of the bottom 34. At the center of the bottom part 34, a horizontal feeding screw conveyor 40 is horizontally arranged. The horizontal screw conveyor 40 is driven to rotate by a motor 42 attached to the side wall 26 of the container 18, and transports the crushed waste plastic P to an outlet 38 formed in the side wall 27.

The outlet 38 is connected to a vertical cylindrical body 46 of a vertical feed screw conveyor device 44. A vertical feed screw conveyor 48 is disposed inside the vertical cylinder 46 along the longitudinal direction. The vertical feed screw conveyor 48 is driven to rotate by a motor 50 attached to the upper end of the vertical cylindrical body 46, and conveys the crushed waste plastic P upward. Further, a cylindrical shutter 52 that is directed obliquely downward is attached to a side wall near the upper end of the vertical cylindrical body 46, and the waste plastic P conveyed above the vertical cylindrical body 46 is melted in the melting machine 14. To be fed to

The melting machine 14 is a vertically long box having a substantially rectangular horizontal cross section, and comprises a supply section 54, a melting section 56, and a cooling section 58.

An inlet 60 is formed near the corner on the side of the crusher 12 at the upper end of the supply unit 54. The shot 52 of the vertical feed screw conveyor device 44 is inserted into the input port 60 so that the crushed waste plastic P is supplied into the supply section 54. On the other hand, the supply unit 5
An exhaust chamber 62 is provided near the corner on the opposite side of the inlet 60 from above the inside of the chamber 4. The exhaust chamber 62 is formed by a plate 66 attached vertically to the inner surface of the upper wall 64 of the supply unit 54 and a plate 70 attached diagonally upward to the inner surface of the side wall 68 of the supply unit 54. Further, an exhaust blower 72 is attached to the outside of the exhaust chamber 62 so as to exhaust the exhaust gas in the melter 14 to the outside.

Below the supply section 54, a melting section 56 is provided. As shown in FIG. 1 and FIG.
The inside of 6 is provided with a funnel-shaped melting furnace 78 whose opening cross section decreases downward. At the lower end of the melting furnace 78, a drop port 80 is formed as a discharge port, and a large number of hot air inlets 84 are formed in the side wall 82. A hot air inlet cover plate 86 is formed at the upper end of the hot air inlet 84 so as to project obliquely downward toward the inside of the melting furnace 78, so that the hot air is introduced when the waste plastic P falls from above. The waste plastic P is prevented from jumping out of the melting furnace 78 through the port 84.

As shown in FIG. 3, a hot air stagnation chamber 90 is formed between the melting furnace 78 and the side wall 88 of the melting section 56, and the hot air generator 16 is connected through a connection pipe 92. . The hot air generator 16 includes a burner 96 and a blower 98. The burner 96 heats the air, and the heated air is sent to the hot air stagnation chamber 90 by the blower 98. Further, the heated air is fed from the hot air stagnation chamber 90 through the hot air inlet 84 into the melting furnace 78.

On the other hand, as shown in FIG. 1 and FIG.
0 is attached. The stopper 100 protrudes radially inward from the lower end of the dropping port 80 of the melting furnace 78 so as to catch unmelted waste plastic P.

A shutter 102 is provided below the falling port 80. This shutter 102 is a shutter piece 1
22 and 124 and the shutter shafts 108 and 110. The shutter shafts 108 and 110 are disposed near both ends below the drop port 80, and the side walls 104 and 1 of the melting portion 56 are provided.
06 is rotatably supported by the shutter shaft 10.
Shutter pieces 122 and 124 as opening / closing bodies are attached to the middle portions in the longitudinal direction of the gears 8 and 110, respectively.

One end of each of the shutter shafts 108 and 110 protrudes from the side wall 104 of the melting portion 56, and links 112 and 114 are mounted near one end of each of the shutter shafts 108 and 110. The links 112 and 114 correspond to the shutter pieces 122 and 124 and correspond to the shutter shafts 108 and 110.
Are fixed at right angles to the axis.

Further, the shutter piece 122 and the shutter piece 1
Numeral 24 is symmetrically arranged with the middle between the axis of the shutter shaft 108 and the axis of the shutter shaft 110 as the plane of symmetry. Further, the links 112 and 114 are mutually connected to the shutter shaft 10.
The links 112 and 114 are displaced by a predetermined dimension in the axial direction, and the links 112 and 114 are arranged so as to intersect with each other from the longitudinal middle portion to the distal end of the links 112 and 114. In addition, in the vicinity of the distal end from the substantially middle portion in the longitudinal direction of the link 112, 114, a long hole 116,
118 are formed and these long holes 116 and 118 are formed.
, A link pin 120 that penetrates both the long hole 116 and the long hole 118 is attached. The link pin 120 connects the link 112 and the link 114 to each other, and can slide the long holes 116 and 118 of the links 112 and 114 along the longitudinal direction.

A substantially columnar boss 126 is attached to one end of the shutter shaft 108. A groove 128 is formed in the boss 126 from the longitudinal end to a substantially central portion of the boss 126, and the rod-shaped lever 13 is formed in the groove 128.
4, one end in the axial direction is fitted. One end of the lever 134 in the axial direction is supported by the boss 126 by a pin (not shown) while being fitted into the groove 128. Therefore, the lever 134 is moved around the pin by the arrow E in FIG.
Direction and an arrow F direction. One end of a tension spring 139 is locked at a substantially intermediate portion of the lever 134. The other end of the tension spring 139 is attached to the side wall 104 of the fusion zone 56. Therefore, the tension spring 139 always moves the lever 134 to the arrow E
Biased in the direction. The above-described shutter shaft 10
8, 110, link 112, 114, link pin 12
0 and the lever 134 correspond to the operating means in the present invention.

Further, an intermediate portion in the longitudinal direction of the lever 134 is supported by a plate 140. Plate 14
Numeral 0 is horizontally arranged on the outer surface of the side wall 104 of the fusion zone 56, and a lever hole 142 is formed in the center. The lever hole 142 has a substantially U-shape in plan view, and an intermediate portion in the axial direction of the lever 134 is inserted therethrough. Further, the holding portion 1 is provided at the end of the lever hole 142 toward the melting furnace 78.
44 and 146 are formed, and when the lever 134 comes into contact with the longitudinal end of the lever hole 142 and is rotated in the direction of arrow E, the lever 134 is inserted into the holding portions 144 and 146. ing.

On the other hand, below the shutter 102, a cooling section 5 for cooling and solidifying the molten waste plastic P is provided.
8 are provided. A container 150 is disposed on the floor surface 154 of the cooling unit 58 and accommodates the waste plastic P flowing down from the melting furnace 78. Also,
A door 152 as a lid for taking out the container 150 to the outside of the cooling part 58 is attached to the cooling part 58 so as to be openable and closable about the upper edge as a rotation center.

As shown in FIG. 1, the shutter shaft 108
At the other end (side wall 106 side) in the axial direction, one end in the longitudinal direction of a narrow and long plate-shaped interlocking lever 160 is fixed. Therefore, the interlocking lever 160 moves the shutter shaft 108
Are arranged so as to protrude in the radial direction. Therefore, when the shutter shaft 108 rotates around the axis, the shutter shaft 108 rotates integrally with the shutter shaft 108 in the arrow H direction or the arrow I direction in FIG.
A circular hole 162 is formed at the other end in the longitudinal direction of the interlocking lever 160. One end of a chain 164 is connected to the circular hole 162. Chain 16
4 has a flange 166 attached to the door 152.
It is connected to. Therefore, when the interlocking lever 160 rotates in the direction of arrow H in FIG. 1, the door 152 is opened (the state shown by the solid line in FIG. 1), and the interlocking lever 16
0 rotates in the direction of arrow I in FIG.
In a closed state (a state shown by a two-dot chain line in FIG. 1). In addition, the above-mentioned interlock lever 160 and chain 164
This corresponds to the interlocking means in the present invention.

The operation of this embodiment will be described below. When the melting process of the waste plastic P is started, the melting portion 56
Is provided on the holding portion 1 of the plate 140.
46, the shutter pieces 122, 124
And the shutter 102 is in an open state. Further, in this state, the interlocking lever 160 is located diagonally below in the state shown in FIG. 1, so that the door 152 is closed.

In this state, when waste plastic P such as styrofoam, polyethylene, polyvinyl chloride, or polypropylene is put into the container 18 of the crusher 12, the rotating blade 20 rotated by the motor 28 and the fixed blade 22 Then, the waste plastic P is sandwiched and crushed.
The crushed waste plastic P passes through the long hole 32 of the fixed blade 22 and falls to the bottom 34 of the container 18. The crushed waste plastic P that has fallen to the bottom 34 of the container 18 is conveyed to the outlet 38 by the horizontal feed screw conveyor 40 and is carried into the vertical feed screw conveyor device 44. The crushed waste plastic P is transported upward by the vertical feed screw conveyor device 44, and is fed into the supply unit 54 of the melter 14 via the shot 52, and a predetermined amount is supplied to the supply unit 54 and the melting furnace 78. Deposited within.

On the other hand, in the hot air generator 94, the air is heated by the burner 96 and is turned into hot air by the blower 98. This hot air is sent into the hot air stagnation chamber 90 via the connection pipe 92, and then is sent into the melting furnace 78. At the same time, the hot air heats the side wall 82 of the melting furnace 78. Accordingly, the waste plastic P is heated and melted by receiving a direct heating action by hot air and an indirect heating action by heat transmitted through the side wall 82 of the melting furnace 78. The molten waste plastic P flows from the falling port 80 of the melting furnace 78 to the cooling part 58 by its own weight. Note that the waste plastic P that has not been melted is caught by the stopper 100 and does not flow down into the container 150 of the cooling unit 58 until it is melted. Also, when melting, waste plastic P
The exhaust gas such as gas generated from the gas is discharged from the upper exhaust chamber 62 to the outside of the melter 14 by the exhaust blower 72.

The molten waste plastic P that has flowed down from the dropping port 80 of the melting furnace 78 accumulates in the container 150 of the cooling unit 58, where it is cooled naturally and solidified.

Here, the waste plastic P melt-processed in the melting furnace 78 has its own viscosity, so that the waste plastic P has side walls 8 of the melting furnace 78.
Thus, it takes a considerable time for the waste plastic P remaining in the melting furnace 78 to completely flow down, and may drop from the drop port 80 for a long time. When the container 150 is taken out in this state, the floor surface 154 of the cooling part 58 is removed.
The waste plastic P that has dried down will adhere.
Therefore, in such a case, the container 150 is taken out after the shutter 102 is closed.

To close the shutter 102, first, the lever 134 is rotated in the direction of arrow F in FIG. 2 against the biasing force of the tension spring 139, and the lever hole 142 of the plate 140 is closed.
And then rotated in the direction of arrow C, and then rotated in the direction of arrow E and inserted into the holding portion 144. The lever 134 in this state is pulled in the direction of arrow E by the elastic force of the tension spring 139 and is held by the holding portion 144. When the lever 134 is rotated in the direction of arrow C, the shutter shaft 108 is also rotated in the direction of arrow C, and at the same time, the link 112 is also rotated in the direction of arrow C. Link 112
Is rotated in the direction of arrow C, the link pin 120 inserted through the long holes 116, 118 of the links 112, 114 is moved through the long holes 116 in the direction of the shutter axis 108 of the link 112, and the height from the ground is increased. The position is moved upward, and at the same time, the link pin 120 moves the long hole 118 toward the shutter axis 110 of the link 114. For this reason, the link 114 is pulled up by the link pin 120, whereby the link 114 is rotated in the direction of arrow D, and the shutter shaft 110 is also rotated in the direction of arrow D. Therefore, the tips of the shutter pieces 122 and 124 attached to the shutter shafts 108 and 110 come close to each other and come into contact with each other, and the shutter 102 is closed.

Therefore, the falling path of the molten waste plastic P between the falling port 80 of the melting furnace 78 and the cooling part 58 is cut off. Therefore, even if the molten waste plastic P is still dripping from the falling port 80 of the melting furnace 78, the molten waste plastic P is blocked by the shutter pieces 122 and 124 of the shutter 102, and is allowed to cool. It is not discharged to the section 58.

In conjunction with the operation of the lever 134, the interlocking lever 160 is positioned at the position indicated by the two-dot chain line in the state shown in FIG.
Is rotated in the direction of arrow H in FIG. 1 to the position shown by the solid line. For this reason, the door 152 (two-dot chain line) connected to the interlocking lever 160 via the chain 164 rotates, and changes from the closed state to the open state. Therefore, the worker manually moves the door 1
The container 150 can be taken out of the cooling part 58 without opening the container 52.

When the waste plastic P is to be treated again after the replacement of the container 150, the shutter 102 needs to be opened, but the operation at this time may be the reverse of the operation described above. At this time, the lever 134 is
The shutter shaft 108 rotates in the direction of the arrow A in FIG. 2 (the shutter shaft 110 in the direction of the arrow B) in FIG. To rotate. Therefore, shutter 102
Is opened, the door 152 is automatically closed.

As described above, in this embodiment, the shutter 10
Lever 1 for opening and closing 2 (shutter pieces 122, 124)
34, an interlocking lever 160 that rotates in conjunction with the operation of the chain 34 is provided.
64, the shutter 152 can be opened when the shutter 102 is closed,
Conversely, when the shutter 102 is opened, the door 15
2 can be closed. Therefore, when taking out the container 150, the operator can save the trouble of opening the door 152 by hand each time, thereby improving workability.

In this embodiment, the interlocking lever 160 is fixed to the shutter shaft 108. However, the present invention is not limited to this, and the interlocking lever 160 may be attached to the opposite shutter shaft 110.

In this embodiment, the door 152 which is opened and closed by turning is adopted.
A door 152 that opens and closes by sliding may be used. For example, the door is configured to slide on the rail, one end of the wire is attached to one end of the door, and the other end of the wire is inserted into the circular hole 162 of the interlocking lever 160 through a plurality of pulleys arranged at appropriate locations. What is necessary is just to attach it.

Further, in this embodiment, the links 112, 1
Although 14, the lever 134, and the plate 140 are attached to the side wall 104 side, they may be attached to the side wall 106 side opposed thereto.

In this embodiment, a pair of the shutter pieces 122 and 124 are used as the shutter 102. However, the present invention is not limited to this, and the discharge of the waste plastic P dripping from the melting furnace 78 can be prevented. Any size may be used, and the shutter piece may be configured to have only one side.

Further, in this embodiment, the shutter piece 12
Although the configuration is such that the shutter 102 opens and closes by rotating the rotation of the shutter 2 and 124, the configuration is not limited to this, and a configuration in which the shutter pieces are horizontally slidably disposed below the falling port 80 of the melting furnace 78 may be employed. Even in this case, the shutter piece 122,
Like 124, drooping waste plastic P can be prevented.

[0041]

As described above, the waste plastic processing apparatus according to the present invention has an excellent effect that the trouble of opening and closing the door when taking out the container can be saved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing main parts of a melting section and a cooling section of a waste plastic processing apparatus according to an embodiment.

FIG. 2 is a perspective view mainly showing links and the like when FIG. 1 is viewed from another angle.

FIG. 3 is a cross-sectional view showing the entire configuration of a waste plastic processing apparatus provided with the melting section and the cooling section shown in FIGS. 1 and 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Waste plastic processing apparatus 56 Melting part 58 Cooling part 80 Drop port (discharge port) 108 Shutter shaft (operation means) 110 Shutter shaft (operation means) 112 Link (operation means) 114 Link (operation means) 120 Link pin (operation) Means) 122 Shutter piece (opening / closing body) 124 Shutter piece (opening / closing body) 134 Lever (operating means) 150 Container 152 Door (lid) 160 Interlocking lever (interlocking means) 164 Chain (interlocking means)

Claims (1)

(57) [Scope of request for utility model registration] 1. A melting section for melting waste plastic and discharging the molten waste plastic from a discharge port provided at a lower end portion, and a waste plastic provided below the fusion section and discharged from the discharge port. A cooling unit that receives and cools the container with a container disposed therein, a lid for taking out the container that is provided to be openable and closable on the cooling unit, and the discharge port is provided so as to be openable and closable when opened. An opening / closing body that allows the discharged waste plastic to be discharged and prevents the discharge of the molten waste plastic in the closed state; an operating means for switching the opening / closing body to one of an open state and a closed state; A lid is connected, the lid is opened when the opening / closing body is closed by the operating means, and the lid is closed when the opening / closing body is opened by the operating means. State and And interlocking means that, waste plastics processing apparatus characterized by having a.