JPH0459060A - Crusher for bulky waste - Google Patents

Abstract

PURPOSE:To efficiently crush bulky waste by connecting a cylindrical casing to the top of a casing main body having an almost elliptical cross section and furnishing large and small spiral blades around a couple of low-speed and large- torque rotating shafts vertically laid over both casings. CONSTITUTION:A cylindrical or elliptically cylindrical casing 30 with the opening at its top used as an outlet 33 for crushed pieces is connected to the top of a casing main body 10 having a large inlet 11 opened on its upper surface, with the inner periphery consisting of a large-diameter parallel part and the tapered part contracting toward its top and connected to the parallel part. A couple of low-speed and large-torque rotating shafts 60a and 60b are horizontally laid over the main body 10 and casing 30 and rotated so that the waste is bitten alternately by the shafts. The large-diameter spiral blades 40a and 40b having the large-diameter part and tapered part and small-diameter spiral blades 50a and 50b corresponding to the main body 10 and casing 30 are fixed to the shafts 60a and 60b so that the blades are not interfered with one another when rotated.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a resource recovery method for bulk waste and other waste generated from households such as worn-out tatami mats, sofas, chests of drawers, tires, broken refrigerators, and washing machines. The present invention relates to a crushing device for bulk waste, which crushes and reduces the volume of bulk waste for convenient pretreatment and to increase transportation efficiency.

(Prior art) Conventionally, the above-mentioned bulky waste mainly generated from households is collected by collection companies and then separated into recyclable, combustible, and non-combustible materials, with combustible materials being incinerated. , metal waste such as refrigerators was crushed and disposed of as scrap, and plastics were recycled.

(Problem to be Solved by the Invention) However, even if bulky wastes such as those described above are to be treated by some method, they are bulky and have poor transportability and are not easy to handle. Disassembly work is required beforehand. In particular, in the case of waste that is a combination of wood, metal, plastic, etc., if it is incinerated as it is, the recyclable materials will also be burned down, resulting in a lot of waste of resources. Once the waste is dismantled, it must be separated and treated accordingly.

Conventionally, such preliminary processing has been performed mostly manually, requiring a large number of personnel and a great deal of labor, and is also fraught with danger. In addition, the waste mentioned above contains many things that can be reused as recycled resin, metals, or fuel, and it is highly anticipated that if pre-treatment is carried out efficiently, there will be a wide avenue for their effective use. I was about to leave.

The present invention has been made in view of the above, and greatly improves the ability to feed the bulky waste with low noise and vibration so that even box-shaped waste does not stagnate at the input port. The aim is to crush waste extremely efficiently to reduce its volume, improve its transportability and handling, make it easier to separate it for subsequent processing, and further promote the recycling of useful waste. The purpose of the present invention is to provide a novel bulk waste crushing device.

(Means for Solving the Problems) A bulky waste crushing apparatus of the present invention that achieves the above object will be explained based on the attached embodiment drawings. Here, FIG. 1 is a horizontal cross-sectional view showing an example of the bulk waste crushing apparatus of the present invention. FIG. 1(a) shows the large spiral blades overlapped with each other, and FIG. 15(b) shows the large spiral blades separated. Fig. 2 is a cross-sectional view taken along the line ■■ in Fig. 1, Fig. 2 (a) shows the large helical blades overlapped, Fig. 2 (b) shows them separated, Fig. 3(a) is an explanatory diagram showing a spiral blade provided with a substantially triangular reinforcing plate, Fig. 3(b)
is an explanatory diagram showing a small-diameter spiral blade provided with a rectangular reinforcing plate, Figure 4 is a partial cross-sectional perspective view of the outer peripheral edge of the spiral blade, and Figures 5 (a) to (C) are various protruding blades. FIG. 6 is a vertical cross-sectional view of the case where the secondary crushing means is attached to the tip of the cylindrical casing, FIG. 7 is an explanatory diagram of the arrangement of the tearing blades in the secondary crushing means, and FIG. FIG. 9 is a longitudinal cross-sectional view of another embodiment of the next crushing means, and FIG. 9 is a front view of still another embodiment.

That is, the apparatus for crushing bulky waste according to the present invention has an input port 11 that has a large opening on the top surface, and the inner circumferential surface has a large-diameter parallel portion and a continuous tapered portion with a progressively decreasing diameter. A casing body 10 having a substantially elliptical cross section, and the casing body 1
A cylindrical or elliptical cylindrical casing 30 whose ends are connected together and whose end opening serves as a discharge port 33 for crushed pieces;
Low-speed large I-luke rotation drive shafts 60a, 60b are horizontally installed so as to extend from the casing body 10 into the cylindrical casing 30 and engage each other from above to rotate twice.
and a large helix having a large-diameter parallel portion and a tapered portion, which are fixedly connected to the casing body 10 and the cylindrical casing 30 in series around the drive shafts 60a and 60b so as not to interfere with each other in rotation. The gist is that it is composed of blades 40a, 40b and small diameter spiral blades 50a, 50b.

When the ring-shaped fixed blade 20 is provided between the casing body 10 and the cylindrical casing 30, the breaking efficiency is greatly improved. Furthermore, a large number of fixed blades 1 are provided on the inner circumferential surface 10' of the casing.
5 are spaced apart from each other and a large number of slits 10a are provided between them, the crushing of bulky waste is carried out at the same time as input, strengthening the crushing action, and the crushed pieces are immediately discharged from the slits 10a, preventing excessive crushing. This saves power by avoiding this, prevents wear on the device, and further improves crushing ability by ejecting small pieces.

The drive shafts 60a and 60b are connected to a drive means 70 that generates power of a low-speed dog I.R.U.K.
It rotates at a constant or non-uniform speed at a speed of m. The input port 11 is
It is desirable that an opening be formed in substantially the entire upper surface area of the casing body 10 and that a shoe 1 or the like be attached to this opening, which is large enough to allow bulky waste such as refrigerators and sofas to be thrown therein.

It is desirable that a large number of protruding blades 43 of various shapes as shown in the embodiments described later be provided along the circumferential direction of the large spiral blades 40a, 40b in accordance with the properties of the object to be processed. It is also desirable to stabilize the bases of these protruding blades 43 by storing them in kite frames 42 fixedly attached to the sides near the outer peripheries of the large spiral blades 40a and 40b.

In addition, by fixing a plurality of substantially triangular or rectangular reinforcing plates 4.4.54 between the spiral blades 40a, 40b, 50a, 50b and the rotary drive shafts 60a, 60b, the blades 40a, 4. Ob, 50a, 50b
The crushing speed 14 is increased by compressing the crushed material to make it smaller and dividing the feed capacity, and by engaging the two shafts 60a and 60b to increase the crushing speed 14. In particular, if a rectangular reinforcing plate 54 with a blade on the outer edge is provided between the small-diameter spiral blades 50a and 50b, paper, plastic film, and cloth can be cut.

In the case where the large spiral blades 40a and 40b do not overlap each other, by providing a means for reversing the motor 71 of the drive shafts 60a and 60b at least one rotation at the time of overload, the safety of this device is increased and the service life is extended. be able to.

In addition, a sharp blade-like part 41 facing in the spiral direction at least in the small diameter part is provided on the outer peripheral edge of the large spiral blades 40a and 40b.
a, 4.1b to increase the shearing force thereof, and furthermore, the large spiral blades 40a, 40b are connected to the drive shaft 60a.
, 60b, it is also possible to increase shearing force and save energy by fixing it in an inclined state in the spiral direction.

Further, a large number of fixed blades 15..., 3 are provided on the inner circumferential surface 10' of the casing body]0 and the inner circumferential surface 30' of the cylindrical casing 30.
2 can be fixedly installed to enhance the crushing effect within the main casing 10 and to cause even finer fracture within the cylindrical casing 3°. In the present invention, sufficiently finely crushed crushed pieces are discharged from the distal end outlet 33 of the cylindrical casing 30, but if it is necessary to crush them even more finely depending on the purpose of subsequent processing, etc. A secondary crushing means 9 is provided at the tip of the cylindrical casing 30 as shown in an embodiment described later.
It is also possible to add 0.

(Function) The procedure for crushing bulk waste materials using the crushing apparatus configured as described above will be described. When the drive means 70 is rotated, the drive shafts 60a, 60b, large spiral blades 40a, 40b and small diameter spiral blades 50a, 50 fixed around the drive shafts 60a, 60b are rotated.
b rotates so that it bites from top to bottom. The thrown-in bulky waste A is reliably drawn into the casing body 10 by the rotational biting action of the large spiral blades 40a and 40ba, and the shearing force and crushing force of the pair of large spiral blades 40a and 40b as well as the casing body ``O'' pressed against the inner circumferential surface 10' is broken and crushed by force. In addition, when the fixed blade 1-5 is fixed on the inner peripheral surface 10ak of the casing body 10, the large spiral blade 40a rotates with the fixed blade 1-5.
,4. The outer peripheral edge of Ob is further broken into smaller pieces by shearing action. At this time, when protruding blades 43 are provided at intervals on the outer peripheral edges of the large spiral blades 40a and 40b, or when the large spiral blades 4.
When there is a difference in rotational speed between Oa and 40b, the drawing efficiency of the waste material A increases, and the waste material A is drawn in in a tearing manner, thereby improving the subsequent breakability.

In the case where the large helical blades 40a and 40b do not overlap each other, the drive shafts 60a and 60b are individually provided on the motor 7, and if a means for reversing at least one rotation in the event of an overload is provided, the blades, motor and casing body It is possible to prevent overload from being applied to the equipment.

The fragments of the waste coarsely crushed in this way are transported to the large spiral blade 4.
While being pushed forward by the spiral action of the casing body 10, it is gradually compressed by the progressively decreasing diameter of the inner surface of the casing main body 10, and the small diameter portion 12 at the tip is in a quite densely compressed state. Spiral blades 40a, 40b, 50a, 50b
A substantially triangular or rectangular reinforcing plate 44-. 54 strengthens the blade and also strengthens the reinforcing plate 44 between the two axes. ．．
54 is added to the crushing action to divide the feeding capacity.

If a large number of fixed blades 15 are provided at intervals on the inner circumferential surface 10' of the casing, the crushing action will be further strengthened, and if a large number of sulins I" 10a are provided between the fixed blades 15, small pieces will be discharged and power savings will be achieved. Abrasion is prevented and the crushing ability is improved. When the ring-shaped fixed blade 2○ is sandwiched between the casing body 10 and the cylindrical casing 30, the finely compressed crushed pieces are The ring-shaped fixing force 20 and the outer periphery of the rotating large helical blades 4.0a, 40b cause the ring to be broken into even smaller pieces. It is based on the cross-shearing action between the advancing force and the edge of the ring-shaped fixed blade 20 arranged to oppose it, and it can be applied to rigid objects such as iron plates, metal pieces such as reinforcing bars and bolts, or concrete pieces. Moreover, even sticky materials such as tires and carpets can be broken or crushed.

In particular, a sharp edge portion 41 facing in the spiral direction is formed on the outer peripheral edge of the large spiral blades 40a, 40b, and furthermore, the large spiral blade 40a
, 40b are fixedly installed in an inclined state in the spiral direction, the shearing force with the ring-shaped fixed blade 20 becomes even greater, improving the shredding efficiency and saving energy.

The crushed pieces shredded by the ring-shaped fixed blade 20 are pushed forward inside the cylindrical casing 30 by the propulsive force of the equal-diameter spiral blades 50a and 50b, and are successively discharged from the distal end discharge port 33. When the inner circumferential surface 30' of the casing 30 is fixed with the fixed blade 32..., the rotating spiral blade 50
a, 50I) and the fixed blade 32. Cross shearing action is applied to the outer peripheral edge of the fixed blade 32, and the blade is broken into fine layers.

In this way, the crushed pieces discharged from the discharge port 33 turn into scraps and become a fraction of the original volume, which dramatically improves subsequent transportability and handling. Alternatively, even if the waste is a combination of plastics and the like, these will be separated from each other, making it extremely effective for subsequent separation processing.

Since the series of processing operations mentioned above are performed by the low-speed, large-torque driving means 70, vibration, noise, and dust generation are extremely low, and there are few restrictions on the installation location. In addition, it has relatively good ventilation and has ample space, so even if a flammable gas cylinder is mixed in or leaks, the leaked gas will be allowed to escape and an explosion will be less likely to occur.

(Example) Next, an example will be described. In Figures 1 and 2, the inner circumferential surface 10' of the casing main body 10 having an elliptical cross section, which consists of a parallel part and a tapered part, has rod-shaped fixed blades 15 extending from the base side to the tip side at intervals in the circumferential direction. The fixed blades 15 are fixedly fixed in a replaceable manner with bolts or the like, and between the fixed blades 15 there are a number of sulins 1 to 1. , Oa is drilled. Insertion D above the proximal end of the casing body "0" 1-1. '), a hopper H is formed, and the waste A is transferred to both spiral blades 40a.
, 40b to ensure efficient operation and to promote the downward engagement of the large spiral blades 40a and 40b from the double to the bottom, and to remove large or box-shaped waste. It is particularly effective for processing.

Large spiral blade 40a, 4. Ob has a parallel portion and a tapered portion corresponding to the inner circumferential surface of the casing body 10, and protruding blades 43 are provided at the outer circumferential edge thereof, and these blades 40a,
The synergistic action of the protruding blades 43 of 40b effectively pulls in, bites into, and tears the waste A as described above. The protruding blades 43... are shown in FIGS. 5(a) and (b).
As shown in (c), the cutting edge is flat 4-3 a
, pyramid-shaped one 4.3 b, inverted trapezoid-shaped one 4.3
c and the like are used in appropriate combinations depending on the properties of the waste A to be crushed.

As shown in FIG. 4, these protruding blades 43...
Its base is housed in the molded guy frame 42 for stabilization, and is fixed so that it can be replaced by fasteners such as poles 1-42', etc. Also, large spiral blade 40a,
4. The peripheral edge of Ob is formed into a blade-like part 4 with a sharp beak-shaped cross section facing in the spiral direction, and is intended to increase the shearing action with the ring-shaped fixed blade 20. It is also possible to mount a replaceable ring-shaped blade as this blade-shaped portion 41 in a similar manner.

Further, the large spiral blades 40a, 40b are connected to the drive shafts 60a, 60.
It is fixedly installed in an inclined state in the spiral direction with respect to b.

As shown in FIG. 3(a), substantially triangular reinforcing plates 44,54 are fixed to the spiral blades 40a, 40b, 50a, 50b between them and the drive shafts 60a, 60b. The reinforcing plate 44 may be provided only on the large spiral blades 40a and 40b. As shown in FIG. 3(1)), in particular, a small diameter spiral blade 50a.

By providing a rectangular reinforcing plate 54 having a blade 54' on the outer edge between 50b and 50b and twisting it slightly spirally with respect to the axis so as to span at least two fixed blades 32 and 32, It can also cut plastic films and cloth. The reinforcing plate 54 is attached using a long hole so that it can be adjusted when the blade 54' wears out.

When the pair of large spiral blades 40a and 40b rotate at a constant speed and are arranged in an overlapping state, the cylindrical casing 30 can be an elliptical cross-section casing, but the casing main body 10 splits into two. It is also possible to have separate, branched cylindrical casings.

The ring-shaped fixed blade 20 is clamped between the tip flange 14 of the casing body 10 and the base flange 31 of the bifurcated cylindrical casing 30, and can be replaced when worn by separating this connection. It is said that On the inner peripheral surface 30' of each cylindrical casing 30,
A large number of rod-shaped blades 32 extending in the longitudinal direction are replaceably fixed at equal intervals in the circumferential direction. The clearance between the rod-shaped blades 32 and the periphery of the equal-diameter spiral blade 50 is carefully maintained, thereby preventing center runout on the tip side of the cantilever drive shafts 60a, 60b. It is also possible to use the rod-shaped blades 32 as spiral blades, which makes the angle of intersection with the peripheral edge of the small-diameter spiral blades 50a, 50b sharp, thereby further improving the fragmentation (fine) cutting rate here.

The rotary drive shafts 60a and 60b are driven by a low speed large torque drive means 7.
It is connected to an electric motor 7' through a speed reducer 72 which forms 0, and is driven to rotate in the directions of arrows Ra and Rb so as to bite from top to bottom at a low speed of 4 to 1.5 ppm. The speed reducer 72 and the tapered casing body 10
Large bearing 65a between.

The large diameter base portions 61a and 61b are supported by the shaft 65b. The rotational drive shafts 60a and 60b are approximately connected to the discharge port 3.
3, around which large spiral blades 40a, 40b and small diameter spiral blades 50a, 50b corresponding to the casing body "-" and the cylindrical casing 30 are fixed by welding or the like as described above. At the discharge end of the casing 30, for example, a ring 3 extending radially from the central ring 35a is provided.
A terminal blade device 35 having a rod-shaped blade 35b is attached to perform a shearing action on the terminal edges of the small diameter spiral blades 50a, 50b. It is also possible to extend the support of the bearing 66 from this end blade device 35. Surface rotation drive shaft 60
When a and 60b are rotated at a constant speed, Fig. 2 (,)
As shown in FIG. 3, the large spiral blades 40a and 40b are combined in a slightly overlapping state, so that cutting by the blade portion 4') can be performed more effectively. Of course, they may be installed separately without overlapping. On the other hand, when the surface rotation drive shafts 60a and 60b are rotated with a relative speed difference, the outermost peripheries of the large spiral blades 40a and 40b do not touch each other, and the protruding blades 43 are slightly spaced apart so that they mesh with each other. The protruding blades 43 are placed at a certain distance so that the protruding blades 43 can bite more effectively. Providing the speed difference means that each shaft 60a, 6 in the reducer 72
It is well known that this can be easily done by changing the number of teeth of the gear with 0b. However, it is also possible to connect separate motors 71- to each shaft 60a, 60b via separate reducers 72, and in this case, an overload detection means is provided to individually rotate the motors 71 in reverse when overloaded. I can do it. 1
In the case of driving via the base motor 71 and reducer 72, both shafts 60a are activated during overload.

Both 60b and 60b will be reversed.

6 and 7 show an example in which a secondary crushing means 90 is provided at the tip of each cylindrical casing 30. FIG. The secondary crushing means 90
, an outward flange 91 fixed to the tip of the cylindrical casing 30, a number of blade-like protrusions 92 protruding from the front surface of the flange 91, and a flange 91 to the tip of the drive shafts 60a, 60b. A rotating disk 93 fixedly disposed so as to face each other with a small gap, and a flange 91 of the rotating disk 93.
It consists of a blade-like protrusion 94 protruding from the side facing the .

The blade-like protrusions 92..., 94... are formed at intervals along a spiral curve extending from the center of the forming surface in the centrifugal direction. The gap between the flange 91 and the disk 93 is set so that the blade-like protrusions 92, 94, etc. engage with each other, and as the disk 93 rotates, the blade-like protrusions 92, 94,...・are arranged in such a positional relationship that they do not touch each other. As a result, the crushed pieces are pushed out from the discharge port 33 and the rotating disk 93
When reaching the gap between the flange 91 and the flange 91, the crushed pieces are further crushed by the interaction of the blade-like protrusions 92, 94, etc., and are successively pushed in the centrifugal direction, and are further crushed from the periphery. be discharged. The above-mentioned surface rotation drive shafts 60a, 60b
When the spiral blades 40a, 40 rotate at the same speed relative to each other,
If b overlaps each other, outlet 3
3 is provided at the center of the tip of the cylindrical casing 30, and the rotary disk 93 is rotated at an arbitrary speed and direction by another drive source' (not shown). In addition, if the spiral blades 40a and 40b are separated regardless of whether the speed is constant or non-uniform, the discharge port 3
3 on each rotation drive shaft 6 on both sides of the tip of the casing 30.
A rotating disk 93.93 is provided coaxially with 0a and 60b.
can be locked to the tip end portion 64 of each shaft 60a, 60b with a key or the like and rotated in the same direction at the same low speed. Of course, one discharge port 33 may be provided at the center of the tip of the kering 30 like two, and the rotary disk 93 may be rotated by another drive source.

FIG. 8 shows another embodiment of the secondary crushing means 9o, which includes a cone-shaped cylindrical body 95 with a progressively opening shape fixed to the tip of the cylindrical casing 30, and the cone-shaped cylindrical body The inner surface of the cone-shaped cylinder 95 and the outer surface of the rotor 97 have substantially the same relationship as above. Blade-like protrusions 96...98 are provided so as to protrude. The rotating body 97 can be fixed to the drive shafts 60a, 60b as described above, or can be connected to another drive source. In this case as well, the crushed pieces pushed out from the discharge port 33 reach the gap between the cone-shaped cylindrical body 95 and the rotary body 97, and as the rotary body 97 rotates, the blade-shaped protrusions 96, 98, etc. As a result of this action, it is crushed and pushed in the centrifugal direction, and is discharged in finer pieces.

In the above-mentioned embodiment of the secondary cutting means 90, instead of the blade-like protrusions, it is also possible to use a continuous spiral protruding blade or a concave blade for crushing in a millstone-like manner.

In FIG. 9, a support 80 for drive shafts 60a, 60b is fixed at the center or both sides of the tip of a cylindrical casing 30, and the support 80 also functions as a secondary crushing means 90. be. That is, the support body 80 is connected to the drive shafts 60a, 60b.
a center bearing portion 81 bearing the tip end portion 64 of the bearing portion 8;
A supporting rod portion 82 extending radially from 1 and the supporting rod portion 8
2 and a ring-shaped mounting flange portion 83 that is fixed to the front end of the casing 30. Support rod 82
. . . has sharp edges, and the crushed pieces pushed through the casing 30 reach the support rod 82 . As a result of this action, it is broken into even smaller pieces and is discharged from the space between the supporting rods 82.

Such a support body 80 prevents the drive shafts 60a and 60b from coming into contact with each other, and also functions as a secondary crusher.
It is preferably employed together with the above, and can also be used in combination with these.

Incidentally, it is also possible to add the same effect by making the shape of the equal diameter spiral blades 50a, 50b the same as the shape of the tapered dog spiral blades 40a, 40b as shown in FIG.

(Effect of the invention) As described above, according to the device of the present invention, refrigerators, washing machines,
All kinds of bulky waste such as reception sets, tatami mats, carpets, and even old tires are reliably bitten one after another without stagnation in the input port and are crushed extremely efficiently. Therefore, transportation efficiency, handling properties, and even safety during subsequent processing are extremely excellent.

In addition, it is easy to separate and sort recyclable items, which greatly contributes to resource utilization. Moreover, since the device is driven by a low-speed, large-1-lux drive means, the noise is low.
Its practical value is extremely high because it has low vibration and little dust generation, and there is little risk of explosion even if a flammable gas cylinder is mixed in, and there are restrictions on the installation location.

[Brief explanation of the drawing]

Figure 1 is a horizontal sectional view showing an example of the bulk waste crushing apparatus of the present invention. Figure 1 (a) shows the large spiral blades overlapped with each other, and Figure 1 (b) shows the blades separated. ,
Figure 2 is a cross-sectional view taken along the ■-n line in Figure 1, and Figure 2 (a)
Figure 2 shows the large spiral blades overlapping each other.
Fig. 3(a) is an explanatory diagram showing a helical blade with a substantially triangular reinforcing plate, and Fig. 3(b) shows a small-diameter helical blade with a rectangular reinforcing plate. FIG. 4 is a partial cross-sectional perspective view of the outer peripheral edge of the spiral blade, FIGS. 5 (a,) to (c) are perspective views of various protruding blades, and FIG. The figure is a longitudinal cross-sectional view of the case where the secondary crushing means is attached to the tip of the cylindrical casing, Figure 7 is an explanatory diagram of the arrangement of tearing blades in the secondary crushing means, and Figure 8 is another illustration of the secondary crushing means. A vertical sectional view of the embodiment, and FIG. 9 is a front view of yet another embodiment. (Explanation of symbols) 10 - Casing body, 10'...Inner peripheral surface, 1
0a...Slit, ]1.Inlet, 12.Tip small diameter part, ]5...Fixed blade, 20...Ring shaped fixing force, 30.Cylindrical casing, 33...
Discharge port, 30'...Inner peripheral surface, 40a, 40b...Large spiral blade, 41...Blade-shaped portion, 43...Protruding blade, 4
．． 4.54・Reinforcement plate, 50a, 50b・Small diameter spiral blade, 60a, 60b・・Drive shaft, 70・・Low speed dog 1-lux drive means, 90・・Secondary crushing means, A・
...Large waste. that's all

Claims (1)

[Scope of Claims] 1. A substantially elliptical shape having an input port (11) with a large opening on the top surface, and an inner circumferential surface consisting of a large-diameter parallel portion and a continuous tapered portion with a progressively decreasing diameter. Cross-section of the casing body (10
), a cylindrical or elliptical cylindrical casing (30) connected to the tip of the casing body (10) and having a tip opening serving as a debris discharge port (33); A pair of low-speed, high-torque rotary drive shafts (60a) (60b) installed horizontally so as to rotate in the direction of engaging each other from top to bottom within the shaped casing (30); ) A large helical blade (40a) having a large-diameter parallel part and a tapered part is fixed in series in correspondence with the casing body (10) and the cylindrical casing (30) so as not to mutually rotationally interfere with each other. ) (40b
) and small-diameter spiral blades (50a) (50b). 2. The casing body (10) and the cylindrical casing (3)
2. The crushing device according to claim 1, wherein a ring-shaped fixed blade (20) is sandwiched between the crusher and the crusher. 3. A large number of fixed blades (15) are provided at intervals in the circumferential direction on the inner peripheral surface (10') of the casing body (10), and a plurality of fixed blades (15) are provided between the fixed blades (15) on the bottom inner peripheral surface (10'). The crushing device according to claim 1, wherein a large number of slits (10a) are provided. 4. The crushing device according to claim 1, wherein the rotational drive shafts (60a) (60b) are rotatably driven at a constant speed or an uneven speed. 5. On the outer periphery of the large spiral blades (40a) (40b),
The crushing device according to claim 1, wherein a large number of protruding blades (43...) are provided at intervals along the circumferential direction of the crushing device. 6. The base of the protruding blade (43) has a large spiral blade (40a
) (40b), the guide frame (40b) is fixed to the side near the outer periphery.
6. The crushing device according to claim 5, wherein the crushing device is housed in a crusher. 7. The large spiral blades (40a) (40b) and the small diameter spiral blades (50a) (50b) are provided with a plurality of substantially triangular or rectangular reinforcing plates (44) (5) at equal pitches in the circumferential direction.
The crushing device according to claim 1, wherein the crushing device 4) is fixed between the rotary drive shafts (60a) and (60b). 8. A drive shaft (60a) provided so that the large spiral blades (40a) (40b) do not overlap each other
The motor (71) of the drive shaft (60a) (60b)
2. The crushing device according to claim 1, further comprising means for rotating the crushing device in the reverse direction at least one rotation when an overload occurs. 9. Claim 1, wherein the outer peripheral edge of the large spiral blade (40a) (40b) is formed with a sharp blade-like portion (41a) (41b) facing in the spiral direction at least in the small diameter portion thereof. The crushing device described. 10. The crushing device according to claim 1, wherein the large spiral blades (40a) (40b) are fixedly installed in an inclined state in a spiral direction with respect to the drive shaft (60a) (60b). 11. The cylindrical casing (30) has an inner peripheral surface (3
2. The crushing device according to claim 1, further comprising a plurality of fixed blades (32) fixedly attached to the crushing device (0'). 12. The tip outlet (33) of the cylindrical casing (30)
2. The crushing device according to claim 1, further comprising a secondary crushing means (90) for further crushing the crushed pieces into smaller pieces.