JP2569299B2 - Solidification equipment for volume reduction of waste including waste plastic materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to wastes obtained by crushing, kneading and compressing general municipal wastes and industrial wastes including waste plastic materials, melting them by generating heat, consolidating and drying to obtain solidified products. Solidification equipment for reducing the volume of waste containing plastic materials, and more specifically for waste containing waste plastic materials, which has a more compact structure in the apparatus to promote exothermic melting and to obtain solidified materials quickly. The present invention relates to improvement of a solidification device for volume reduction.

[0002]

2. Description of the Related Art The problem of the effective recycling of municipal waste and industrial waste containing a large amount of waste plastic materials has been 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 Japan's industrial development. It has been a long time since this problem was exclaimed, but since then, efficient solutions have been studied in various fields, and some of them have been put into practical use as raw materials for producing regenerated fuel. It has also been proposed that a material containing a large amount of vinyl chloride or the like be reduced in volume and solidified to be buried.

As an apparatus for producing this kind of solidified product, the one disclosed in Japanese Utility Model Application Laid-Open No. 63-161803, from page 6, line 8 to page 7, line 6 and disclosed in FIG. is there. As shown in FIG. 10, the waste plastic material melting and solidifying apparatus has a casing 101 which is a cylindrical body having a tapered cross section, and the waste plastic material charged from the inlet 102 is already collected and coarsely crushed in this process. The waste plastic pieces have passed through the primary and secondary sorting. Two screws 10 that make the axes parallel in the casing
3 and 104 are inserted and mounted. Each screw is formed of a screw shaft 105, 106 and a screw blade 107, 108, and each screw is mutually connected by a drive source (not shown) connected outside the casing. Can rotate independently. In addition, the screw blades 107 and 108 draw a spiral line in the opposite direction and cut forward or crush the contaminated dust and send it forward. The front casing and the screw blade shrink at substantially the same rate, respectively, and are compacted while being narrowed down from the horizontal direction. A heater 109 is provided around the consolidation portion, where the material is heated and melted, and is squeezed out of the discharge port 110 as two rods in a solid state and collected. .

[0004]

In the conventional solidification apparatus for reducing the volume of waste containing waste plastic material as described above, the above-mentioned waste introduced from the inlet 102 is crushed,
Since the amount of heat generated by compression during the kneading and compression process is small and the melting of the waste plastic material is inadequate, heating is performed from the outside, so that the structure is complicated and extra energy is consumed. Will be.

An object of the present invention is to solve such a problem of the conventional apparatus, in which a pair of spiral bladed shafts is slanted or curved from one short axis side to the other long axis side. A simple and compact structure forcibly transporting intermediate products by the end wall and / or guide plate increases the degree of compression to increase the amount of heat generated, and sufficiently melts the waste plastic material without replenishment of heat energy from outside It is an object of the present invention to provide an apparatus for reducing the volume of solids containing waste plastics, which enables speedy production of solids having excellent shape retention.

[0006]

According to the present invention, which achieves the above object, the solidification apparatus for reducing the volume of waste containing waste plastic material has a supply port at one end into which waste containing waste plastic material is charged. And it is rotated so as to bite from top to bottom in a casing having a waste solidified material outlet at the other end, crushing, kneading, compressing, melting the input waste,
In a rotatably supported pair of spiral bladed shafts that convey to the discharge port while consolidating, one of the pair of spiral bladed shafts is shortened on the discharge side, and the casing also corresponds to the short shaft. shorter minor axis half, made by the end wall and or inner guide plate that is adjacent to the minor axis end of the short shaft half so other long spiral blade shank is inclined or curved toward the downstream side of the casing , The longer spiral blade above
The attached shaft has several helicopters in the same spiral direction at its end.
A characteristic is that a push-in impeller blade body is attached .

Preferably, the pair of shafts with spiral blades are rotated at a constant speed, and the outer peripheral portions of the spiral blades are arranged with their inner sides facing each other being overlapped. As described in Item 3, the pair of spiral bladed shafts is rotated at an uneven speed on one side and at a slow speed on the other side,
The outer peripheral portions of the spiral blades are arranged so as to be spaced apart on the inside facing each other.

According to a fourth aspect of the present invention, the long spiral bladed shaft is provided with a mortar-shaped squeezed body from the vicinity of the end of the short axis to the downstream side. A casing portion containing the longer shaft with a spiral blade is provided with a steam vent opening above the rear part of the squeezing body, and a water supply pipe is provided for selectively supplying water for temperature control from the opening . As described in claim 6 , the casing has a discharge port at an end wall of a casing portion containing the long spiral bladed shaft, and a perforated plate is attached to the discharge port. . Also, as in claim 7 , the casing has a discharge hole in the end wall of the casing portion that houses the shaft with the longer spiral blade, and the end of the shaft has a tapered shape, A tapered spiral blade is attached to the end, and a single nozzle is attached to the outlet. Further, as in claim 8 , the casing can be provided with a wear-resistant liner on its inner peripheral surface so as to be replaceable, and as in claim 9 , the liner extends in the longitudinal direction. It can have ridges or grooves.

[0009]

In the solidification apparatus for reducing the volume of waste containing waste plastic material having the above configuration, waste introduced from the supply port is crushed by spiral blades provided on a pair of shafts that bite from top to bottom. The kneaded mixture is conveyed to the discharge side, and is forcibly transferred to the long axis side by the discharge side end wall of the short axis side casing and / or the oblique surface of the guide plate inside thereof. The intermediate product transferred thereafter is conveyed to the discharge port by the long-axis spiral blade while being strongly pressed. In this case, it is increasing only the compression degree merge the minute, the amount of heat generated increases, Ri Do that melting of the waste plastic material is promoted, also by a plurality of helical push blade ring member
As a result, the pushing into the outlet is promoted, and a solid having good shape retention can be obtained quickly.

According to the second aspect of the present invention, the pair of spiral bladed shafts are rotated at a constant speed, and the outer peripheral portions of the respective spiral blades are arranged so that the opposing inner sides thereof are overlapped with each other. Can be summarized. In the apparatus according to the third aspect, the pair of spiral bladed shafts are arranged such that one is rotated earlier and the other is rotated at a non-uniform speed, and the outer peripheral portions of the spiral blades are spaced apart on the inside facing each other. Although the effect of kneading is enhanced, the degree of compression can be increased by increasing the rotation speed of the short axis. In the apparatus according to claim 4, the longer spiral bladed shaft is provided with a mortar-shaped squeezed body downstream from the vicinity of the end of the short shaft to reduce the crushing particle size and increase the degree of compression heat generation. In the apparatus according to the fifth aspect, the casing portion accommodating the longer shaft with the spiral blade is provided with a steam vent opening above the rear part of the compressed body, and the moisture that inhibits the solidification of the molten plastic is vaporized. It is possible to increase the degree of solidification of the solidified material by extracting the water, and when the amount of vinyl chloride or the like is large, water for temperature control can be injected from the vapor vent opening so as to prevent the generation of toxic gas due to excessively high heat generated by compression.

In the apparatus according to the sixth aspect , the casing has a discharge port at an end wall of a casing portion containing the shaft with the longer spiral blade, and a perforated plate is attached to the discharge port. A plurality of small solid products suitable for fuel can be obtained at the same time. Further, in the apparatus according to claim 7 , the casing has a discharge port at an end wall of the casing portion accommodating the longer spiral bladed shaft, and the end of the shaft is tapered.
And path shape is attached is tapered spiral blade tapering to the termination, and attach the Tankuchi nozzle to the outlet, it is possible to obtain a suitable thick dense solidified to landfill.
In the apparatus according to the eighth aspect, the casing body is protected by the wear-resistant liner facing the inner peripheral surface of the casing, and the worn liner is replaced. In the apparatus according to the ninth aspect , crushing, kneading, and feeding are effectively performed by the ridges and grooves in the longitudinal direction of the liner.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an apparatus for reducing and solidifying waste containing waste plastic material according to the present invention. FIG.
2 is a partial horizontal sectional plan view of a representative embodiment of a waste volume reduction solidification apparatus containing 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.
FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1, FIG. 5 is a partial horizontal sectional view showing another example of the short axis side end wall guide plate, and FIG. 6 is a waste plastic material rich in chloride. 7 is a front sectional view of the final pushing blade ring body, FIG. 8 is a partial horizontal sectional view of a discharge port with a perforated plate, and FIG. 9 is a cross-sectional view of a discharge port with a single-hole nozzle. It is a partial horizontal sectional view.

1 to 4, the apparatus for solidifying and reducing the volume of waste containing waste plastic material of the present invention is charged in a longitudinal direction from a supply port 11 a at one end to a discharge port 11 c at the other end. The crushing, kneading, compression, and pulverization are performed while conveying the waste containing the waste plastic material, and the waste plastic material is melted by the heat generated during the crushing, kneading, and discharging.
1c, which is solidified by the extruding and drying actions, and is arranged substantially horizontally in the longitudinal direction in the elongated casing 11 which can be divided at least vertically into two parts, facing each other so as to bite from top to bottom. A pair of long and short rotating shafts 12 and 13 that are driven to rotate at a constant speed in the directions, spiral bodies 14, 14 ′ and 17, a pressing body 16 and a pushing blade ring 18 attached to each of the rotating shafts 12 and 13. A wear-resistant lining (liner) 30 removably provided in the casing 11 with a predetermined gap between the spiral body and the compressed body, and a solidifying means 20 provided in the discharge port 11c. It is configured. Particularly, in the present embodiment, a waste containing a polymer of a plastic which does not emit a toxic gas even at a high temperature of 180 ° C. or more and burns is processed and is taken out as a solidified material. A perforated plate as a solidifying means 20 is provided.

A pair of adjacent inner sides arranged in a cantilevered state via bearings A and B in a longitudinal direction in a horizontally installed elongated casing 11 having a substantially elliptical cross section and from top to bottom. Each of the rotating shafts 12 and 13 that are driven to rotate at a constant speed in opposite directions so as to bite into each other (from the front surface to the back surface in FIG. The first helical members 14 and 14 'are attached in a driven state by an engaging means having an engaging surface having a cross section (in the present embodiment, the shape is a regular hexagon, but may be a glasses shape). On the downstream side of the short shaft 13 of the long rotation shaft 12, a pressing body 16, a second spiral body 17, and a pushing blade ring 18 are further provided.
And are sequentially connected.

A short rotating shaft 13 has the first spiral 1
Only 4 'is attached. First spiral 14, 14 '
In order to sufficiently perform crushing and kneading at the beginning,
It is longer . The spiral bodies 14 and 17 for the long shaft 12 include cylindrical bodies 14a and 17a engaged with the rotating shaft 12, and right-handed spiral blades 14b and 17b formed on the outer peripheral surface of the cylindrical bodies 14a and 17a. Spiral 14 'for the short axis 13
Includes a cylindrical body 14a engaged with the rotating shaft 13 and a left-handed spiral blade 14'b formed on the outer peripheral surface thereof. The spiral blades 14b, 1 of the opposing spiral bodies 14, 14 '
Since 4'b rotates at a constant speed, they are arranged in a slightly overlapping state so as to mesh with each other. The short-axis side casing end wall W2 and the liner 39 as a guide plate inside thereof are inclined toward the squeezed body 16, and the first spiral blade 14b, 1
4′b moves the crushed and kneaded intermediate product to the long shaft 12 side and transfers it to the pressed body 16 with the long shaft 12,
The consolidation on the downstream side from the pressing body 16 is increased. The end wall W2 and the liner 39 can be provided with a bearing B 'for supporting the end shaft of the short shaft 13.

The squeezing body 16 has a frustoconical portion 16 on the upstream side.
a and the downstream cylindrical portion 16b. A right-handed spiral groove 16c is formed on the outer peripheral surface of the truncated cone-shaped portion and the cylindrical portion at a regular interval like a milling cutter (for example, four lines). Spiral blades 14b, 14'b and pressed body 1
The gap between the inner wall 6 and the inner lining 30 provided on the inner surface of the casing 11 is so small that the waste can be crushed, compressed and crushed, whereby the waste is pressurized and generates heat and melts. This gap can be arbitrarily changed by appropriately replacing the cassette type lining member 30 having various thicknesses, whereby appropriate compression, pressurization and the like can be adjusted in accordance with a change in material, and quality can be improved. (Particularly hardness) is obtained. The intermediate product in the molten state is pushed into the hole 22 of the perforated plate 20 and solidified by the pushing blade shaft 18 at the final end of the long rotating shaft 12.

The casing 11 of the apparatus 10 has a wide first block 11A containing the first spirals 14 and 14 '.
And a second block 11B containing the pressed body 16;
And a third block 11C containing a spiral body 17 and a pushing blade ring body 18, each of which has a bolt
It is separably connected by a nut. Also the first
The block 11 is connected to the front end wall W1 via the front flange,
Further, it is connected to the second block front flange having the short-axis side rear end wall W2 via the rear flange. The third block 11C is connected to the guide plate 20a and the perforated plate 20 by bolts and nuts via rear flanges. The blocks 11A, 11B, and 11C are joined to each other by bolts and nuts via horizontal flanges so that they can be further divided into two parts at the center in the vertical direction, but the configuration of the casing 11 is not limited to this. .

A supply port 11a is provided in the upper section of the first block 11A of the casing 11, and a steam exhaust means Q is provided at the front top of the upper section of the third block. On the other hand, the guide plate 20
a, a large number of circular, cross-shaped, and other variously shaped through-holes 22a... such as triangular, quadrangular, etc. are arranged in a surface area corresponding to the outer peripheral portion of the cylindrical body 17a. The through-holes 22 of the perforated plate 20 attached to the outside of the guide plate 20a by co-tightening are formed in a shape corresponding to the through-holes 22a and are tapered with a narrowed front diameter. May be something. At restart, holes 22
A heater H is attached to the perforated plate 20 in order to warm and extrude the solidified material in a, 22.

In the steam exhaust means Q comprising the exhaust pipe 41,
A water injection pipe 42 is provided on the exhaust pipe 41 so as to form a water injection means 40.
The opening degree of the control valve 44 provided in the water injection pipe 42 is controlled by a sensor 43 such as a thermometer or a moisture detector provided in the outlet 11c via a controller (not shown). It is to be adjusted. Since the waste to be treated generates heat and generates a large amount of steam due to the action of the pressing body 16, the steam exhaust means Q efficiently discharges the waste to the outside of the apparatus and removes moisture that prevents solidification of the molten plastic. It is a thing to pull out. In addition, when the waste contains a polymer substance such as vinyl chloride, the water injection pipe 42 is thermally decomposed if the temperature is excessively raised to, for example, 180 ° C. or more due to the above-mentioned heat generation, and the wastewater contains hydrogen chloride and chlorine gas. Producing poisonous gas,
Or, the waste is in a state of muddy and spirals 14, 17
In some cases, it may not be possible to carry out the transfer, so that the temperature is kept constant (for example, around 110 ° C.) by injecting water into the apparatus.

The lining 30 which is detachably attached to the inner surface of the casing 11 is made of a wear-resistant material, and the first and third blocks 11A, 11C of the casing.
And a squeezed body liner block 35 disposed in the second block 11B of the casing. Six rows of liner blocks 3 are provided in the first block 11A of the casing.
1, two liner blocks 31 are arranged in the third block 11C, and one liner block 35 is arranged in the second block 11B.

As shown in detail in FIG. 3, the spiral liner block 31 has a central
And four side-side liners 33, and a total of eight liners 32 and 33, which are integrated 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 via the processed material is distributed to the casing 11, and each block 11A , 11C are integrally formed with protrusions 32a and 33a that protrude to the outside through mounting holes h1 provided around the periphery and have tapered holes w2 for wedges. Each liner 32, 33
The wedges W are driven into the tapered holes h2 of the projections 32a, 33a that protrude outwardly from the outside, so that they are firmly fixed. A groove is appropriately formed on the inner peripheral surface.

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

Replacement of the liners 32, 33, 36 and 37 is performed by removing the bolts and nuts of the flange from the upper section or the lower section of the casing block containing the replacement liner and using a known block such as a chain block or a crane. Removed by working equipment, remove wedge W and replace with new one,
Perform welding repair, and perform recovery assembly by the procedure opposite to disassembly. As the fixing means of the liners 32, 33, 36, 37, a nut may be used by a screw means other than the wedge W, and various modifications may be applied.

The long rotating shaft 12 is counterclockwise (arrow a) as viewed from the upstream side with a large torque through a speed reducer by a motor.
), And the short rotation shaft 13 is rotated by the gear box G via the gears 19a and 19b fixed to the upstream shaft ends.
, And is driven to rotate clockwise (arrow b) at a constant speed. A thrust bearing which receives a conveying force or a reaction force of a press input is also provided as appropriate. The long rotating shaft 12 is supported in a cantilever manner on the bearing A of the gear box G and the bearing B at the upstream end of the casing 11, while the short rotating shaft 13 has the bearings B at both ends.
B 'is supported. In order to facilitate the replacement of the heavily worn, heavily worn spirals, squeezers and pusher blades, these components are of small diameter downstream so that the pivots 12, 13 can be withdrawn upstream. From the side to the upstream large-diameter collar portions 12a and 13a. The long shaft 12 is also optionally mounted at the end, as shown in FIG.

The operation of the solidification device 10 for reducing the volume of waste containing waste plastic material having the above-described structure will be described. The rotating shafts 12 and 13 and the first helical body 1 engaged therewith are described.
The pressing body 16 and the second helical body 17, which are rotationally driven in the counterclockwise direction a and the clockwise direction b so as to bite from each other from above and below, respectively, and are engaged with the long rotating shaft 12. When the bulky water content and plastic-rich waste from which large metal pieces and the like have been removed is thrown in from the supply port 11a while being rotated and driven in the counterclockwise direction a, the waste in the casing 11 and the lining body 30 is removed. Is a relatively long first spiral 1
4 and 14 ', crushed and kneaded and compressed between the liner block 31 and the minimum space between the shafts to increase the temperature by friction to increase the pressure of the compressed body 1 on the downstream side.
6 is conveyed.

In this process, the waste to be treated is crushed into small pieces, compressed and kneaded at the same time, and is conveyed to the discharge port side with an increase in temperature, and is conveyed to the downstream side by the inclined end wall W2 and the guide liner 39. It is strongly pressed into the small gap c between the adjacent pressing body 16 and the liner block 35. Then, the pressing force is applied by the spiral blades 14b and 14'b and the wedge action is performed by the taper of the truncated cone-shaped portion 16a. At this time, the intermediate processed material that has been heated and compressed by the compression and friction is released to the atmospheric pressure level at the rear portion of the second block 11B of the casing, and is rapidly expanded (since the exhaust means Q communicates with the outside air). As a result, water vapor is sequentially discharged from the exhaust pipe 41 and dehydrated. In the case of treating exhaust gas containing a polymer substance such as vinyl chloride, if the temperature is excessively increased to nearly 180 ° C., toxic gas is generated as described above, or the product becomes muddy and cannot be fed. Therefore, water is automatically injected from the water injection pipe 42 by a sensor 43 such as a temperature, so that an excessive rise in temperature is suppressed and stable operation is maintained.

The pulverized material pressed into the gap c as described above is particularly finely pulverized by the grinding action of the oblique groove 16c on the pressing body side and the liner side groove facing each other. At the stage where the water passes through the compressed body 16 and the water is evaporated, the intermediate processed product is considerably finely pulverized and moderately dewatered, fed to the second spiral body 17 of the third block 11C in a molten state, and kneaded with the guide plate 20a while kneading. It is fed to the perforated plate 20 and extruded from the through holes 22 as a rod-like solid.

The extruded solid is usually processed to a maximum diameter of 15 to 120 mm and a length of about 30 to 100 mm. When used as a coarse aggregate, the solid surface is appropriately roughened to enhance the anchor effect. Processing is performed. These solids, which generate toxic gas when incinerated PVC etc., are used for the production of the payment block laid on the sidewalk or as the coarse aggregate of the concrete which does not require much strength, and also for improving the drainage of the soil. Further, as a soil improvement material, a material mainly composed 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 guide plate (liner) 39 'inside the short-axis end wall W2 of the casing 11 may be curved toward the downstream side of the long axis. This configuration is advantageous in forcing the squeeze body 16 into the squeeze body.
Further, the bearing B 'supporting the short shaft end portion 13' is connected to the end wall W2.
Or liner 39 '.

As shown in FIG. 6, in order to cool the intermediate product (water prevents solidification of the molten plastic) without relying on water injection that would add water that inhibits the solidification of the molten plastic. The three blocks 11'C can be of a water-cooled jacket type. Rotating shaft 12 and second spiral 1
7 is the same as that of the above-mentioned embodiment, but when there are many waste materials such as chlorides such as PVC, the temperature is excessively increased so as to prevent the generation of toxic gas. . A water-cooled jacket-type block 11'C provided in parallel with or instead of the water injection means 40
Is a lower half provided with a lower water chamber WR1 and a water supply pipe WP1, an upper half provided with an upper water chamber WR2 and a drain pipe WP2, and left and right communication pipes WP3 connecting the upper and lower small chambers WR2 and WR1. , WP3. This jacket is also used for warming material, and is also used for solidification of a perforated plate type and solidification of a single-hole nozzle type.

As shown in FIG. 7, the pushing blade ring 18
FIG. 7A shows a single blade 18A shown in FIG.
A two-blade 18B shown in FIG. 7B and a three-blade 18C shown in FIG. 7C are used, and the number is selected depending on the flow state of the intermediate product.

As shown in FIG. 8, a plurality of heaters H are formed in the perforated plate 20 'by using a replaceable nozzle Z1 to heat and solidify the adhered solid matter at the time of starting, as shown in FIG. Things are also adopted. Further, when the major axis 12 is strongly pushed laterally outward and the deflection is large, the end portion is made to be the round shaft 12b and supported by the bearing C. The bearing C has a round shaft 12
It is spaced from the perforated plate 20 'so that the flow product coming out along b does not enter.

In the case where a large amount of PVC or the like is used to obtain an unsuitable solid fuel for use as a solid fuel, a single-hole nozzle Z2 is attached instead of the perforated plate 20, as shown in FIG. The nozzle Z2 includes a tapered portion and a straight portion, and the straight portion is provided with a plurality of heaters H for starting.
A tapered body or a tapered body 12c with spiral blades is fixed to the terminal end surface of the rotating shaft 12 with bolts. Liner 38
If grooves (38a) are provided at a pitch of, for example, 90 [deg.] In (consisting of a conical portion 38A and a cylindrical portion 38B), a columnar solid having projections on the outer peripheral surface is obtained. As the holes of the nozzle Z2, those having various polygonal cross sections are also used. The presser ring 3 fixed to the nozzle Z2 with bolts
8 'holds it in nozzle Z2. Of course, the single-hole nozzle Z2 is used not only for landfilling but also for solid fuel production, and it goes without saying that steam exhaust means Q with water injection means is also provided.

In the above embodiment, the first spirals 14, 14 '
Are overlapped on the inside and the rotating shafts 12 and 13 are rotating at a constant speed, but the spiral blades 14b and 14'b are separated on the inside so that they do not hit each other due to uneven speed rotation. It goes without saying that it is also used. Also, the pressing body 16
It is needless to say that an apparatus omitting the above also falls within the technical scope of the present invention. Further, the transfer can be achieved by cooperating the reverse spiral blade attached to the end of the short shaft 13 and the oblique guide plate liner 39 of the present application.

[0035]

As described above, according to the solidification apparatus for reducing the volume of waste containing waste plastic material according to the present invention, a crushing and kneading ability for waste is maintained as before, and a shaft with a pair of spiral blades is provided. The degree of compression is increased with a more compact structure that is transferred by one of the minor axis side inclined or curved from the minor axis side to the other major axis side and / or a guide plate, thereby increasing the heat generation and increasing the efficiency. It promotes the melting of waste plastic materials, and the helical push blades at the end of the long shaft provide
As a result, the pushing of the melt into the outlet can be promoted to quickly produce the solidified material.

According to the second aspect of the present invention, the pair of spiral bladed shafts are rotated at a constant speed, and the outer peripheral portions of the respective spiral blades are arranged with their opposing inner sides overlapping each other. Can be summarized. In the apparatus according to the third aspect, the pair of spiral bladed shafts are arranged such that one is rotated earlier and the other is rotated at a non-uniform speed, and the outer peripheral portions of the spiral blades are spaced apart on the inside facing each other. Although the effect of kneading is enhanced, the degree of compression can be increased by increasing the rotation speed of the short axis.

In the apparatus according to the fourth aspect, the shaft with the longer spiral blade is provided with a mortar-shaped pressing body downstream from the vicinity of the end of the short shaft to reduce the crushing particle size and reduce the degree of compression heat generation. In the device according to claim 5, the casing portion containing the shaft with the longer spiral blade is provided with a vapor vent opening above the rear part of the pressed body, and the moisture is vaporized as vapor to remove the solid. The solidity of the compound can be increased.

In the apparatus according to the sixth aspect , the casing has a discharge port at an end wall of the casing portion containing the shaft with the longer spiral blade, and a perforated plate is attached to the discharge port, and A plurality of small solids suitable for fuel can be obtained at the same time. Further, in the device according to claim 7 , the casing has a discharge port in the end wall of the casing portion containing the shaft with the longer spiral blade, the end of the shaft is tapered, and the end of the shaft is tapered. Tapered spiral blade attached
A single nozzle is attached to the discharge port , and a thick solid product suitable for landfill can be obtained. Claim 8
In this device, the casing 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 ninth aspect , crushing, kneading and feeding are effectively performed by the ridges and grooves in the longitudinal direction of the liner.

[Brief description of the drawings]

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

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

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV in FIG. 1;

FIG. 5 is a partial horizontal sectional view showing another example of the short axis side end wall guide plate.

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

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

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

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

FIG. 10 is a horizontal sectional view of a solidification device for reducing the volume of waste containing waste plastic material according to a conventional example.

[Explanation of symbols]

 Reference Signs List 10 Solidification device for volume reduction of waste containing waste plastic material 11 Casing 11a Supply port 11c Discharge port 12 Shaft with long spiral blade (long rotary shaft) 13 Shaft with short spiral blade (short rotary shaft) 14b, 14 ' b spiral blade 16 mortar-shaped pressed body 17b spiral blade 18 push blade ring 20 perforated plate 30 liner 39 guide plate (liner) 39 'guide plate (liner) Q Steam vent (exhaust means) Z2 Single port nozzle

Continuation of front page (56) References JP-A-52-130873 (JP, A) JP-A-5-42580 (JP, A) JP-A-47-12237 (JP, A) JP-A-47-6033 (JP, A) JP-A-63-214421 (JP, A) JP-A-58-151019 (JP, U) JP-A-4-26086 (JP, U) JP-A-62-43710 (JP, U)

Claims (9)

(57) [Claims] 1. A casing having a supply port at one end into which waste containing waste plastic material is charged and a discharge port at the other end of solidified waste material, which bites from top to bottom. is rotated, crushed the inserted waste, kneading, compression, melting, the pair of spiral bladed shaft that conveys to the discharge port side of the downstream side is rotatably supported with compaction, wherein the pair of helical One of the bladed shafts is shortened on the discharge side, and the casing also has a shorter short shaft half corresponding to the short shaft, and an end wall adjacent to the short shaft end of the short shaft half of the casing and / or the inside thereof. in the guide plate volume reduction solidification equipment waste containing other long spiral blade shank downstream formed Ru is inclined or curved toward the side waste plastic material, and the longer
Of the spiral blade with the same spiral direction at the end
It is noted that two helical push blades are attached.
Solidification equipment for volume reduction of waste containing waste plastic material
Place . 2. The apparatus according to claim 1, wherein the pair of spiral bladed shafts are rotated at a constant speed, and the outer peripheral portions of the respective spiral blades are arranged such that their inner sides are overlapped. 3. The pair of spiral bladed shafts are arranged such that one is rotated at an early speed and the other is rotated at a slow unequal speed, and the outer peripheral portions of the respective spiral blades are spaced apart on the inner side facing each other. 1
The described device. 4. The apparatus according to claim 1, wherein the longer spiral bladed shaft has a pressing body interposed downstream from near the end of the short shaft. 5. A casing for accommodating the longer spiral bladed shaft, wherein a steam vent opening is provided above a rear portion of the compressed body, and a water supply for selectively supplying temperature control water from the opening. 5. The device according to claim 4, wherein a tube is provided. 6. The casing according to claim 1, wherein the casing has a discharge port at an end wall of a casing portion accommodating the shaft with the longer spiral blade, and a perforated plate is attached to the discharge port. apparatus. 7. The casing has the longer discharge port to the end wall of the casing portion containing the spiral blade with the axis of, and the shaft end tapered tapered, tapered in the termination The apparatus according to claim 1, wherein a tapered spiral blade is mounted, and a single-mouth nozzle is mounted at the outlet. 8. The apparatus according to claim 1, wherein said casing has a wear-resistant liner replaceably provided on an inner peripheral surface thereof. 9. The apparatus according to claim 9, wherein the liner has a ridge or a groove extending in a longitudinal direction.