JPH07256644A - Device for volume-reducing and solidifying waste constaining waste plastic material - Google Patents

Abstract

PURPOSE:To raise a compression degree by a compact structure and to increase calorific value by shortening one side of a pair of shafts fitted with screw blades in a discharge side and shortening the half of a casing in the short shaft side in accordance with the short shaft and fitting a screw blade of reverse grasp to the end part in the discharge port side of the short shaft. CONSTITUTION:Turning shafts 12, 13 and a first screw bodies 14, 14' fitted thereto are respectively rotated and driven mutually counterclockwise and clockwise (b) so as to be bitten from the upper part to the lower part. Waste which is bulky and contains plenty water content and plastics except large metallic pieces is charged from a supply port 11a in such a state as a compressing body 16 fitted to the long turning shaft 12 and a second screw body 17 are rotated and driven counterclockwise. Thereby, waste is agitated by the comparatively long screw bodies 14, 16' in a casing 11 and a lining body 30, crushed and kneaded in the interval of the screw bodies and a liner block 31 and in the minimum space part between the shafts. Therefore, waste is compressed and the temperature is raised by friction and conveyed to the compressing body 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a waste product for crushing, kneading, compressing, heating and melting general municipal wastes and industrial wastes containing waste plastic materials to obtain solid products by consolidating and drying. An apparatus for reducing the volume of waste containing a plastic material, more specifically, a waste material containing a waste plastic material, which has a more compact structure in the apparatus to promote exothermic melting to obtain a solidified product speedily. The present invention relates to improvement of a volume reduction solidification device.

[0002]

2. Description of the Related Art The problem of effective recycling treatment of general municipal waste and industrial waste containing a large amount of waste plastic materials is accompanied by the problem of energy saving for preservation of petroleum resources.
It is no exaggeration to say that this is the most important issue for industrial development in Japan. It has been a long time since this problem was screamed, but since then, efficient solutions in various fields have been earnestly studied, and some of them have been put into practical use as raw materials for the production of recycled fuel. In addition, it is also proposed that a material containing a large amount of vinyl chloride and the like be reduced in volume to be solidified and then landfilled.

An apparatus for producing this kind of solidified material is disclosed in the original specification of Japanese Utility Model Publication No. 63-161803, from page 6, line 8 to page 7, line 6 and FIG. 1 of the drawings. There is. This waste plastic material melting and solidifying device is
As shown in FIG. 10, the casing 101 is a cylindrical body having a cross section of a pyramid shape, and the waste plastic material charged through the charging port 102 has already been collected, roughly crushed, and subjected to primary and secondary sorting in this process. It is in the state of waste plastic pieces.
Two screws 1 that make the axes parallel to each other in the casing
Nos. 03 and 104 are inserted therethrough, and each screw is formed of a screw shaft 105, 106 and a screw blade 107, 108, and they are mutually connected by a driving source (not shown) connected to the outside of the casing. It can rotate independently. In addition, the screw blades 107 and 108 draw a spiral line in the opposite direction to cut and crush the contained dust and send it forward. The front casing and the screw blades respectively shrink at substantially the same ratio and are compacted in a state of being squeezed from the horizontal direction up to that point. A heater 109 is provided around this consolidating portion, where the material is heated and melted, and is squeezed and collected in a solid state as two rod-shaped bodies from the discharge port 110. .

[0004]

In the conventional volume reducing and solidifying apparatus for waste containing the waste plastic material as described above, the above-mentioned waste input from the input port 102 is crushed,
The amount of heat generated by compression in the process of kneading and compression is small and the waste plastic material is insufficiently melted, so it is heated from the outside, which complicates the structure and consumes extra energy. It will be.

The present invention is intended to solve the above-mentioned problems of the conventional device, and an inverse spiral blade having a short axis end portion from one minor axis side of the pair of spiral blade attached shafts to the other major axis side. With a simple and compact structure that forcibly transfers the intermediate product, the degree of compression is increased to increase the amount of heat generation, and the waste plastic material is sufficiently melted without being supplemented with heat energy from the outside to maintain shape retention. It is an object of the present invention to provide a solidifying apparatus for reducing the volume of wastes including waste plastic materials, which can obtain excellent solidified products.

[0006]

In order to achieve the above object, the apparatus for solidifying the volume of waste containing waste plastic material of the present invention has a supply port at one end into which the waste containing waste plastic material is introduced. And is rotated so as to be bitten from the top to the bottom in the casing having the discharge port for solidified waste material at the other end, and crushes, kneads, compresses, and melts the input waste material,
In a rotatably supported pair of shafts with spiral blades that are conveyed to the discharge port side while being consolidated, one of the pair of shafts with spiral blades is shortened on the discharge side, and the casing also corresponds to the short shaft. It is characterized in that the half of the short shaft side is shortened, and a spiral blade of reverse hand is attached to the end portion on the discharge port side of the short shaft.

Preferably, as described in claim 2, the pair of shafts with spiral blades are rotated at a constant speed, and the outer peripheral portions of the spiral blades are arranged so that the inner surfaces facing each other overlap each other. As described in the item 3, one of the pair of spiral bladed shafts is rotated at one speed is fast and the other is slow at a non-uniform speed,
The outer peripheral portions of the spiral blades are arranged so as to be spaced on the inner side facing each other.

As described in claim 4, the shaft with the longer spiral blade has a mortar-shaped squeezing body interposed downstream from the vicinity of the end of the minor shaft, and as described in claim 5, A casing portion accommodating the longer spiral vane shaft is provided with a steam vent opening above the rear of the squeeze body, further wherein the longer spiral vane shaft terminates as in claim 6. 8. A discharge port is provided in an end wall of a casing portion in which the casing houses the shaft with the longer spiral blade, as described in claim 7, wherein the casing has a plurality of helical pushing blade ring bodies in the same spiral direction. And a perforated plate is attached to the outlet. Further, as described in claim 8, the casing has a discharge hole in an end wall of a casing portion accommodating the shaft with the longer spiral blade, and the end of the shaft has a tapered shape. A tapered taper blade is attached to the end, and a single-port nozzle is attached to the outlet. Further, as in claim 9, the casing may have a wear resistant liner replaceably provided on an inner peripheral surface thereof, and as in claim 10, the liner extends in a longitudinal direction. It can have ridges or grooves.

[0009]

In the apparatus for solidifying the volume of the waste containing the waste plastic material having the above-described structure, the waste introduced from the supply port is crushed by the spiral blades provided on the pair of shafts which are bitten from the top to the bottom. , Kneaded and conveyed to the discharge side, pushed back by the spiral blade attached to the end of the discharge side of the short shaft while being pushed back toward the long axis to merge, and then discharged by the long spiral blade. It will be transported to the exit.
At this time, the degree of compression is increased by the amount of merging, the heat generation is increased, and the melting of the waste plastic material is promoted, so that a solid product having good shape retention can be obtained.

In the apparatus according to the second aspect, the pair of shafts with spiral blades are rotated at a constant speed, and the outer peripheral portions of the spiral blades are arranged so that the opposite inner sides are overlapped with each other, so that the rotation driving means is simple. Can be summarized in. In the device according to claim 3, the pair of shafts with spiral blades are rotated at one speed is fast and the other is slow, and the outer peripheral portions of the respective spiral blades are arranged so as to be spaced on the inner side facing each other. The kneading action becomes stronger, but the compression degree can be increased by increasing the rotation speed of the minor axis. In the apparatus according to claim 4, the shaft with the longer spiral blade is provided with the mortar-like squeezing body from the vicinity of the terminal end of the short shaft to the downstream side, so that the crushed particle size can be made fine and the compression heat generation degree can be increased. Further, in the apparatus of claim 5, the casing portion accommodating the shaft with the longer spiral blade is provided with a steam vent opening above the rear portion of the squeezing body, and water that impedes solidification of the molten plastic is converted into steam. It is possible to increase the solidity of the solidified product by draining it, and it is also possible to inject water for temperature control from the steam draining opening so that the compression heat generation temperature does not rise excessively and toxic gas is not generated when there is a large amount of vinyl chloride or the like.

In the apparatus of claim 6, the shaft with the longer spiral blade has a plurality of impellers in the same spiral direction at the terminal end, and feeds the molten intermediate product to the discharge port. Can be done efficiently. Further, in the apparatus according to claim 7, the casing has a discharge port in the end wall of the casing portion accommodating the shaft with the longer spiral blade, and the porous plate is attached to the discharge port, and the solid fuel is It is possible to simultaneously obtain a plurality of small solid products suitable for. Further, in the apparatus of claim 8, the casing has a discharge port in the end wall of the casing portion accommodating the shaft with the longer spiral blade, or a tapered taper spiral blade is attached to the end. Since the end of the shaft is tapered and a single-port nozzle is attached to the discharge port, it is possible to obtain a thick solidified product suitable for landfilling. In the apparatus according to the ninth aspect, the casing main body is protected by the wear resistant liner facing the inner peripheral surface of the casing, and the worn liner is replaced. Claim 1
In No. 0 apparatus, crushing, kneading, and feeding are effectively performed by the ridges and grooves in the longitudinal direction of the liner.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A device for solidifying a volume of waste containing a waste plastic material according to the present invention will be described below with reference to the accompanying drawings. Figure 1
Is a partial horizontal sectional plan view of a typical embodiment of a waste volume reducing and solidifying apparatus including waste plastic material of the present invention, FIG. 2 is a partial vertical sectional front view of the same embodiment, and FIG. 3 is III-I in FIG.
II line sectional view, FIG. 4 is a IV-IV line sectional view in FIG. 1, FIG. 5 is a partial horizontal sectional view showing another example of the reverse-handed spiral blade of the short axis terminal portion, and FIG. FIG. 7 is a front view of the final pushing blade ring body, FIG. 8 is a partial horizontal cross-sectional view of a discharge port with a perforated plate, and FIG. 9 is a discharge port with a single-hole nozzle. It is a partial horizontal sectional view of a part.

1 to 4, the apparatus for solidifying the volume of waste containing the waste plastic material of the present invention is loaded in the longitudinal direction from the supply port 11a at one end to the discharge port 11c at the other end. Crushing, kneading, compression and crushing are performed while conveying the waste material containing the waste plastic material, and the waste plastic material is melted by the heat generated during that time, and the discharge port 1
1c, which is solidified by extrusion and drying action in 1c, is arranged substantially horizontally in the longitudinal direction in an elongated casing 11 that can be divided into at least two vertically, and opposes so as to bite from above to below. A pair of long and short rotation shafts 12 and 13 that are driven to rotate at a constant speed, spirals 14, 14 'and 17 attached to the rotation shafts 12 and 13, and a rear portion of the long shaft 12. Squeezing body 16 and pushing blade ring body 1
8, a wear-resistant lining body (liner) 30 detachably attached to the inside of the casing 11 with a predetermined gap between the spiral body and the compressed body, and a solidification means 20 provided at the discharge port 11c. It consists of and. In particular, in this embodiment, a perforated plate serving as a solidification means 20 suitable for forming solid fuel at the final end for treating a waste containing a plastic polymer that does not emit a toxic gas even when burned and taking it out as a solidified product. Is equipped with.

From the top to the bottom inside a pair of adjoining insides arranged side by side through bearings A and B in a longitudinal direction inside an elongated casing 11 having a substantially oval cross section and installed horizontally. Each of the rotary shafts 12 and 13 driven to rotate at a constant speed in the opposite direction so as to be bitten in (in FIG. 1, from the front side to the rear side of the paper) has a polygon shape (from the inlet side to the outlet side). The first spiral bodies 14, 14 'are mounted in a driven state by the engaging means having the engaging surface having a cross section, which is a regular hexagon in this embodiment, but may be a spectacle shape. A compressing body 16, a second spiral body 17, and a pushing blade ring body 18 are sequentially connected to a portion of the long rotating shaft 12 on the downstream side of the short shaft 13.

In the short rotating shaft 13, a reverse spiral (right-hand) second spiral blade 17'b, which has approximately one round, is attached to the cylindrical body 14a at the discharge-side end portion. The first spirals 14 and 14 'are initially longer than the second spiral 17 in order to sufficiently perform crushing and kneading. The spiral bodies 14 and 17 for the long shaft 12 include cylindrical bodies 14a and 17a that are engaged with the rotating shaft 12, and the cylindrical body 14
Right hand spiral blade 14 formed on the outer peripheral surface of a, 17a
The spiral body 14 'for the short shaft 13 includes a cylindrical body 14a engaged with the rotary shaft 13, a left-handed spiral blade 14'b and a right-handed spiral formed on the outer peripheral surface thereof. Feather 1
7'b. Since the spiral blades 14b and 14'b of the facing spiral bodies 14 and 14 'rotate at a constant speed, they are arranged in a slightly overlapping state so as to mesh with each other. The right-handed spiral blade 17'b of the short shaft 13 is the first spiral blade 14
b, 14'b is crushed and kneaded, thrust is applied so as to return the intermediate product to the major axis 12, and the compressed body 16 with the major axis 12 is applied.
To be merged, and the compaction on the downstream side from the compressed body 16 is enhanced. Right hand spiral blade 17'b
Can be configured to increase the lead angle and increase the amount of transfer to the major axis 12 side.

The squeezing body 16 is a truncated cone-shaped portion 16 on the upstream side.
a and a tubular portion 16b on the downstream side. A plurality of right spiral grooves 16c, which are the same as the first spiral blades 14b, are formed on the outer peripheral surface of the truncated cone-shaped portion and the cylindrical portion in a mill-like shape (for example, four rows) at equal intervals. Spiral blade 14b,
The gaps between 14'b and 17b and the press body 16 and the lining body 30 attached to the inner surface of the casing 11 are made small so that the waste can be crushed, compressed and crushed. It is heated under pressure and melts. This gap can be arbitrarily changed by appropriately replacing the cassette-type lining body 30 having various thicknesses, which allows appropriate adjustment of compression, pressurization, etc. in response to a change in material, and quality. A stable solid substance (particularly hardness) can be obtained.
By the pushing blade shaft body 18 at the final end of the long rotary shaft 12, the intermediate product in a molten state is pushed into the holes 22 of the perforated plate 20 to be molded and solidified.

The casing 11 includes a first spiral body 14 and a first spiral body 1.
A wide first block 11A accommodating 4 ', a second block 11B accommodating the compressed body 16, and a second spiral body 17
And a third block 11C accommodating the pushing blade ring body 18
And bolts and nuts are detachably connected to each other via flanges. The first block 1
1 is connected to the front end wall W1 via the front flange, and to the second block front flange having the minor axis side rear end wall W2 via the rear flange. Third block 11
C is connected to the guide plate 20a and the perforated plate 20 via a rear flange by bolts and nuts. Each of the blocks 11A, 11B, and 11C is further divided into the upper and lower parts in the central part.
Bolts to each other via horizontal flanges so that they can be split
Although joined by a nut, the structure of the casing 11 is not limited to this.

The upper section of the first block 11A is provided with a supply port 11a, and the upper section of the third block is provided with a vapor exhaust means Q at the front apex. On the other hand, in the solid matter discharge port 11c, the guide plate 20a penetrates into a surface area corresponding to the outer peripheral portion of the cylindrical body 17a in various shapes such as a large number of circular shapes, cross-shaped shapes, and other triangular shapes, quadrangular shapes, etc. according to requirements. Hole 22
a ... are arranged. The through holes 22 of the perforated plate 20 attached to the outside of the guide plate 20a by co-fastening are
Although the drawing taper is formed in a shape corresponding to the through hole 22a so as to have a reduced diameter in the front direction, it may be straight. A heater H is attached to the perforated plate 20 in order to warm and extrude the solidified material in the holes 22a, 22 ... When restarting.

The steam exhaust means Q includes an exhaust pipe 41, a water injection pipe 42 is introduced into the exhaust pipe 41 so as to form the water injection device 40, and a thermometer or a moisture detecting device provided at the exhaust port 11c is used. The opening degree of a control valve 44 provided in the water injection pipe 42 is adjusted by a sensor 43 such as a meter via a controller (not shown). This steam exhaust means Q
When the waste to be treated contains a large amount of water, it is heated by the action of the squeezing body 16 and generates a large amount of steam. It removes water that impedes solidification. In addition, when the waste contains a high molecular substance such as vinyl chloride, the water injection pipe 42 is thermally decomposed when the temperature rises above 180 ° C. due to the heat generation, and is toxic gas such as hydrogen chloride or chlorine gas. May occur or the waste may become muddy and cannot be transported by the spiral bodies 14 and 17, so water is poured into the device to keep the temperature constant (for example, around 110 ° C). It is a simple thing.

On the other hand, the lining body 30 which is provided around the inside of the casing 11 is made of a wear-resistant material, and the liner block 31 for the spiral body arranged in the first and third blocks 11A and 11C of the casing. And a liner block 35 for a compressed body arranged in the second block 11B of the casing. Six rows of liner blocks 31 are arranged in the first block 11A of the casing, two rows of liner blocks 31 are arranged in the third block 11C, and one row of liner blocks 35 is arranged in the second block 11B. Has been done.

As shown in detail in FIG. 3, the liner block 31 for the spiral body has a central side liner 32 of four.
Each of the side liners 33 is composed of four side liners 33 and a total of eight liners 32 and 33 that are aggregated into two types. It is provided around the blocks 11A and 11C. The outer peripheral surface of each liner 32, 33 is flat corresponding to the inner peripheral surface of each block 11A, 11C of the casing, so that the load received through the processed material is distributed to the casing 11 and each block 11A , 11C are integrally formed with projecting portions 32a and 33a, which project outward through mounting holes h1 provided around 11C, and have wedge tapered holes h2. Each liner 32, 33 has a casing 11
The wedges W are hammered into the tapered holes h2 of the protrusions 32a and 33a which are protruded to the outside to be firmly fixed. Grooves are appropriately formed on the inner peripheral surface.

As shown in detail in the right half of FIG. 4, the squeeze liner block 35 has two types of upper and lower liners 36 and two side liners 37. It is composed of a total of eight liners 36, 37, and is provided around the second block 11B of the casing with a predetermined gap from the compressed body 16. Each of the liners 36, 37 integrally forms a protrusion 36a, 37a having a wedge tapered hole h2 that protrudes outside through a mounting hole h1 provided around the second block 11B. The liners 36 and 37 are firmly fixed by driving wedges W into the tapered holes h2 of the protruding portions 36a and 37a protruding to the outside of the casing 11. Grooves are appropriately formed on the inner peripheral surface so that crushing, kneading, and feeding can be effectively performed.

Replacement of the liners 32, 33, 36, 37 is carried out by removing the bolts and nuts of the flange from the upper section or the lower section of the casing block accommodating the replacement liner, and using known methods such as chain blocks and cranes. Remove with work device, remove wedge W and replace with new one,
Weld repairs and reassemble by the procedure opposite to disassembly. As the fixing means for the liners 32, 33, 36, 37, a nut can be used by screw means in addition to the wedge W, and various modifications can be applied.

One long rotary shaft 12 is rotationally driven by a motor through a speed reducer with a large torque in a counterclockwise direction (indicated by arrow a) when viewed from the upstream side, and is fixed to each upstream shaft end. The other short rotation shaft 13 is rotationally driven in the gear box G in the clockwise direction (arrow b) at a constant speed via the gears 19a and 19b. Further, a thrust bearing that receives the reaction force of the conveying force or the pressure input is also provided as appropriate. Each rotary shaft is supported in a cantilever state by a bearing A of the gear box G and a bearing B at the upstream end of the casing 11. In order to facilitate replacement of the spiral body, the squeezing body, and the pushing blade ring body, which are heavily worn under a heavy load, these components have a small diameter downstream so that the rotating shafts 12 and 13 can be extracted upstream. From the side to the upstream side large-diameter collar portions 12a and 13a.

Next, the operation of the apparatus 10 for solidifying the volume of the waste containing the waste plastic material having the above-mentioned structure will be described. The rotating shafts 12, 13 and the first spirals 14, 14 engaged with them. ′ Are rotationally driven in the counterclockwise direction “a” and the clockwise direction “b” so that they are bitten from the upper side to the lower side, and the compression body 16 and the second spiral body 17 engaged with the long rotation shaft 12 are engaged.
When and are driven to rotate in the counterclockwise direction a, a bulky, water-containing and plastic-rich waste from which large metal pieces have been removed is introduced from the supply port 11a, and the casing 11
The waste is agitated by the relatively long first spirals 14 and 14 'in the liner block 31.
And is crushed, kneaded and compressed in the minimum space between the shafts to raise the temperature by friction and is conveyed to the squeezing body 16.

In this process, the waste to be treated is crushed into small pieces, simultaneously compressed and kneaded, and conveyed to the outlet side while the temperature rises, and the transfer spiral blade 17 ′ at the terminal end of the short shaft 13. It is strongly pressed into a small gap c between the squeezing body 16 and the liner block 35 that are adjacent to the downstream side by b. And the spiral blades 14b, 14'b, 1
A pressing force is applied by 7'b and a wedge action due to the taper of the truncated cone-shaped portion 16a is applied to press into the gap c. At this time, the intermediate processed product that is heated and compressed by compression and friction is
At the rear of the second block 11B of the casing, the pressure is released to the atmospheric pressure level (because the exhaust means Q communicates with the outside air), the pressure is rapidly expanded, and the exhaust pipe 41 is sequentially discharged as water vapor and dehydrated. And, when treating exhaust gas containing high molecular substances such as vinyl chloride, the temperature is 180 ℃.
If the temperature rises too close, poisonous gas is generated or becomes muddy as described above, and it becomes impossible to feed. Therefore, the temperature sensor 43 automatically injects water from the water injection pipe 42 to raise the temperature excessively. Is controlled to maintain stable operation.

In the crushed material press-fitted into the clearance c as described above, especially the granular material is crushed more finely by the milling action of the slanted groove 16c on the compression body side and the groove on the liner side facing each other. At the stage of evaporating the water after passing through the press body 16, the intermediate processed product is pulverized into fine particles, appropriately dehydrated and fed in a molten state to the second spiral body 17 of the third block 11C, and kneaded with the guide plate 20a. It is fed to the perforated plate 20 and extruded from the through holes 22 as a rod-shaped solid material.

The extruded solid material is usually processed to have a maximum diameter of 15 to 120 mm and a length of 30 to 100 mm, but when it is used as a coarse aggregate, the surface is appropriately roughened in order to enhance the anchor effect. Processing is applied. Those solid substances that generate toxic gas when incinerating PVC etc. are used as a coarse aggregate of concrete for the production of a paving block laid on the sidewalk or that does not require much strength, and for improving the drainage of soil. Further, as a soil improving material, a material composed mainly of a polyolefin polymer material containing 2% or less of vinyl chloride is used as a regenerated solid fuel.

As shown in FIG. 5, the minor axis 13 is used for transfer.
The reverse-handed spiral blade mounted on the cylindrical body 14a at the terminal end of can be composed of a plurality of short-length spiral blades 17 ″ b, and the spiral blade 14′b for crushing and kneading can be sufficiently short axis. It can be extended to near the end of 13, and the transfer of the intermediate product to the major axis side is efficiently performed.

As shown in FIG. 6, in order to cool the intermediate product (water prevents the solidification of the molten plastic) without depending on water injection which would impede the solidification of the molten plastic, the third block 11 '. C can be water-cooled jacket type. The rotating shaft 12 and the second spiral body 17 are the same as those in the above-mentioned embodiment, but the waste plastic material is P
When there are many chloride-based materials such as VC, the temperature is too high to prevent generation of toxic gas, so that the material is cooled. The water cooling jacket type block 11'C provided in parallel with or instead of the water injection means 40 has a lower half provided with a lower water chamber WR1 and a water supply pipe WP1, and an upper water chamber W.
Left and right communication pipes WP3, W connecting the upper half provided with R2 and the drain pipe WP2 and the upper and lower small chambers WR2, WR1
P3 and. This jacket is used for perforated plate type solidification, single hole nozzle type solidification, and also for warming material.

As shown in FIG. 7, the pushing blade ring body 18
7A of the single blade shown in FIG.
The two-blade type 18B shown in FIG. 7B and the three-blade type 18C shown in FIG. 7C are used, but the number is selected according to the flow state of the intermediate product.

As the structure of the discharge part, as shown in FIG. 8, the holes of the perforated plate 20 'are formed by replaceable nozzles Z1 and a plurality of heaters H for warming and fluidizing the adhered solid matter at the time of starting are provided. Things are also adopted. Further, when the long shaft 12 is strongly pushed outward in the lateral direction and a large shake occurs, the end portion is made to be the round shaft 12b and supported by the bearing C. Bearing C is round shaft 12
It is separated from the perforated plate 20 'so that the flow product that comes out along the line b does not come in.

When a solidified material for landfill that is not suitable as a solid fuel due to a large amount of PVC etc. is obtained, a single hole nozzle Z2 is attached instead of the porous plate 20 as shown in FIG. The nozzle Z2 is composed of a taper portion and a straight portion, and the straight portion is provided with a plurality of heating heaters H for starting.
A taper body 12c with a spiral blade is provided on the end surface of the rotating shaft 12.
Are fixed with bolts. When the grooves 38a are provided at, for example, a 90 ° pitch in the liner 38 including the conical portion 38A and the cylindrical portion 38B, a column-shaped solidified product having protrusions on the outer peripheral surface is formed. As the holes of the nozzle Z2, those having various polygonal cross sections are also used. The liner 38 is attached to the nozzle Z2 by a holding ring 38 'which is bolted to
It is mounted in the nozzle Z2. Needless to say, the single-hole nozzle Z2 is used not only for landfill but also for solid fuel, and the steam exhaust means Q with water injection means is also provided.

In the above embodiment, the first spiral body 14, 14 '.
The rotating shafts 12 and 13 were rotating at a constant speed due to the overlapping inside, but the spiral blades 14b and 14'b were separated from each other inside so that they would not hit each other at a non-uniform speed. Needless to say, it is also used. In addition, the compressed body 16
It goes without saying that a device that omits is also within the technical scope of the present invention. Furthermore, the minor axis side end wall W2 may be slanted to cooperate with the reverse-handed spiral blade 17'b.

[0035]

As described above, according to the apparatus for solidifying the volume of waste containing the waste plastic material of the present invention, the crushing and kneading ability for the waste is maintained as usual, and the shaft with the pair of spiral blades is maintained. Transfer the intermediate product from one minor axis side to the other major axis side by the reverse spiral blade at the minor axis end. A more compact structure enhances the compression degree, increases the heat generation amount, and more efficiently waste plastics. A solidified product can be produced by promoting the melting of the material.

In the apparatus according to the second aspect of the present invention, the pair of shafts with spiral blades are rotated at a constant speed, and the outer peripheral portions of the spiral blades are arranged so that the inner surfaces facing each other overlap each other. Can be summarized in. In the device according to claim 3, the pair of shafts with spiral blades are rotated at one speed is fast and the other is slow, and the outer peripheral portions of the respective spiral blades are arranged so as to be spaced on the inner side facing each other. The kneading action becomes stronger, but the compression degree can be increased by increasing the rotation speed of the minor axis.

In the apparatus of claim 4, the longer shaft with spiral blades is provided with a mortar-shaped squeezing body interposed downstream from the vicinity of the end of the short shaft to make the crushed grain size fine and to reduce the compression heat generation degree. In the device according to claim 5, the casing part accommodating the shaft with the longer spiral blade is provided with a steam discharging opening above the rear part of the squeezing body so that water is discharged as steam and solidified. The solidity of the compound can be increased.

In the apparatus of claim 6, the longer shaft with spiral blades has a plurality of helical pushing blade ring bodies in the same spiral direction at the terminal end, and the molten intermediate product is sent to the discharge port. The goods can be sent efficiently. Further, claim 7
In the device of (1), the casing has a discharge port at the end wall of the casing portion accommodating the shaft with the longer spiral blade, and the perforated plate is attached to the discharge port, which is suitable for solid fuel. Multiple solids can be obtained simultaneously.
Further, in the apparatus according to claim 8, the casing has a discharge port on the end wall of the casing portion accommodating the shaft with the longer spiral blade, and the end of the shaft is tapered to form a taper at the discharge port. A single-necked nozzle is attached, and a thick solid product suitable for landfill can be obtained. In the device of claim 9, the casing main body is protected by the wear resistant liner on the inner peripheral surface of the casing, and the worn liner is replaced. In the apparatus according to the tenth aspect, crushing, kneading, and feeding are effectively performed by the ridges and grooves in the longitudinal direction of the liner.

[Brief description of drawings]

FIG. 1 is a partial horizontal cross-sectional plan view of a representative embodiment of a solidifying apparatus for reducing the volume of waste containing a waste plastic material according to the present invention.

FIG. 2 is a partial vertical sectional front view of the embodiment.

3 is a sectional view taken along line III-III in FIG.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a partial horizontal cross-sectional view showing another example of the reverse-handed spiral blade at the short-axis end portion.

FIG. 6 is a cross-sectional view of a uniaxial portion of a waste device containing chloride-rich waste plastic material.

FIG. 7 is a front view of a pushing blade ring body.

FIG. 8 is a partial horizontal sectional view of a discharge port portion with a perforated plate.

FIG. 9 is a partial horizontal sectional view of a discharge port portion with a single hole nozzle.

FIG. 10 is a horizontal cross-sectional view of a solidifying apparatus for reducing the volume of waste containing a waste plastic material according to a conventional example.

[Explanation of symbols]

 10 Volume Reduction and Solidification Device for Waste Containing Waste Plastic Material 11 Casing 11a Supply Port 11c Discharge Port 12 Long Shaft with Long Shaft (Long Rotation Shaft) 13 Short Shaft with Short Spiral Blade (Short Rotation Shaft) 14b, 14 ' b spiral blade 16 mortar-shaped squeezing body 17b spiral blade 17'b reverse-handed spiral blade 17 "b reverse-handed spiral blade 18 push-in blade ring body 20 perforated plate 30 liner (lining body) Q vapor vent opening (exhaust means) ) Z2 single-ended nozzle

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B29B 7/48 9350-4F 13/10 9350-4F // B29K 105: 26

Claims (10)

[Claims] 1. A casing which has a supply port into which waste containing a waste plastic material is introduced at one end and a discharge port for solidified waste product at the other end so as to be bitten from top to bottom. When the waste is thrown in, the waste is crushed, kneaded, compressed, melted, and compressed to reduce the amount of waste including the waste plastic material that rotatably supports the shaft with a pair of spiral blades that conveys it to the discharge side. In the volume solidification device, one of the pair of shafts with spiral blades is shortened on the discharge side, and the casing is also shortened on the minor axis side half corresponding to the minor axis, and at the discharge port side end portion of the minor axis. An apparatus for solidifying the volume of waste containing waste plastic material, which is equipped with a spiral blade that is upside down. 2. The apparatus according to claim 1, wherein the pair of shafts with spiral blades are rotated at a constant speed, and the outer peripheral portions of the spiral blades are arranged so that the opposite inner sides thereof overlap each other. 3. A pair of shafts with spiral blades, one of which is rotated at a high speed and the other of which is slow at a non-uniform speed, and the outer peripheral portions of the spiral blades are arranged so as to be spaced from each other on the inner side opposite to each other. 1
The described device. 4. The apparatus according to any one of claims 1 to 3, wherein the shaft with the longer spiral blade has a mortar-shaped squeezing body provided downstream from near the end of the short shaft. 5. A casing part accommodating the longer shaft with spiral blades is provided with a steam vent opening above the rear part of the squeezing body, and water is selectively supplied from the opening for temperature control water injection. The device of claim 4, wherein a tube is provided. 6. The apparatus according to claim 1, wherein the shaft with the longer spiral blade has a plurality of helical pushing blade wheel bodies having the same spiral direction at the terminal end. 7. The casing according to claim 1, wherein the casing has a discharge port on a terminal wall of a casing portion accommodating the shaft with the longer spiral blade, and the porous plate is attached to the discharge port. apparatus. 8. The casing has a discharge port in a terminal wall of a casing portion accommodating the shaft with the longer spiral blade, and the shaft has a tapered end or a tapered end. An apparatus according to claim 1, wherein a tapered spiral blade is attached and a single-port nozzle is attached to the outlet. 9. The apparatus according to claim 1, wherein the casing has a wear resistant liner replaceable on its inner peripheral surface. 10. The device according to claim 9, wherein the liner has a ridge or groove extending in the longitudinal direction.