JPS606205B2 - Styrofoam recycling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that narrow grooves are formed in the outer periphery of the disk bodies, the pair of disk bodies are supported facing each other so as to be able to rotate at a relatively high speed, and the styrofoam fed into the disk bodies is pulverized. The method for recycling foamed polystyrene described in Japanese Patent Publication No. 54-12512, which is configured to process and recover recycled materials granulated through the narrow grooves, has been patented as a principle, and this method has been specifically developed as a practical dedicated machine. This invention relates to an apparatus for recycling expanded polystyrene.

As is well known, the number of foamed resin materials, for example, 30~
Styrofoam (polystyrene foam) formed by foam molding is useful as a cushioning material or packaging material for various devices, a heat insulating material, a packaging container, or the like.

However, such waste of Styrofoam after use, or defective molded products or molded layers during molding,
Because it is highly foamed, it is extremely bulky and does not become obsolete, making it unsuitable for landfill disposal.Furthermore, if it is incinerated, it will generate bad smoke and cause significant damage to the incinerator. Ta. On the other hand, foamed polystyrene is usually white unless colored, making it easy to identify and lightweight, making it easy to collect and collect. In view of these points, Japanese Patent Publication No. 12512/1984 describes a method in which a thin groove is formed on the outer peripheral edge of the disk body, and the pair of disk bodies are supported relative to each other so as to be able to rotate at high speed. A means for recycling expanded polystyrene has been provided in which the pulverized foamed polystyrene fed into the body is processed and recovered as a recycled material granulated from the pongee groove.

However, in the process of recycling expanded polystyrene as described above, the expanded polystyrene is fed between a pair of discs, specifically a fixed disc and a rotating disc that rotates at high speed. Even though it is supplied to the factory, it is merely finely pulverized to a diameter smaller than a certain value, and below that diameter, there are still variations in size that are not uniform.

Furthermore, in the conventional device, only a narrow groove having a mirror-toothed cross section and a constant width is formed on the outer periphery of the disk. Therefore, when recycling pulverized polystyrene foam, the centrifugal force generated by the high-speed rotation of the rotating disk smoothly presses and compresses all of the lightweight pulverized material into the narrow grooves on the outer periphery of the disk. It is difficult to transfer the material, and a part of it becomes caught at the entrance part of the inner end of the fine structure, causing a clogging phenomenon and causing product unevenness of the recycled material that should be processed and recovered as granulated fine particles. In addition, the regeneration processing capacity is reduced, and the operation of the entire device is forced to stop.From this point of view, the present invention provides a coarse groove on the inner circumference of the narrow groove of the conventional device. The lees pickles and the narrow grooves are arranged in a cross-section configuration, whereby relatively large chips of the supplied crushed material are crushed by rock-cutting in the ridges of the coarse grooves, and then the crushed materials are coarsely crushed. By forcibly guiding the material along the groove and allowing it to migrate toward the periphery, it is possible to eliminate unevenness in the product as a granulated recycled material and to further improve the recycling processing ability.

Embodiments of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, the overall outline of the apparatus according to the present invention is as shown in FIG. It has a structure in which the two are organically, closely and inseparably integrated. Reference numeral 1 denotes a machine body having a box-like frame structure and covering the periphery of the machine frame, and casters 2 are fixed to the bottom of the machine body to ensure movement of the entire apparatus.

A and B are the coarse pulverizer and fine pulverizer made of styrene foam installed in the front and rear parts of the lower half of the fuselage 1, and 3 is the coarse pulverizer A.
Hoppers 4 and 5 for charging the Styrofoam The rotating shaft 4a on the upper side and the rotating shaft 5a on the lower side are fixedly supported by each other. 6 is a coarse screen such as porous punching metal or mesh wire mesh,
The side and bottom sides of the rotary blades 4 and 5 are coated starting from the lower end of the hopper 3. Specifically, the eyes of this screen 6 have a diameter of 30 to 5 portside. 7 is an opening/closing lid pivoted on the front side of the machine directly below the hopper 3, and 8 is an overflow barrier for coarsely crushed material x1 installed between coarse crusher A and fine crusher B. It has the function of receiving tray for object XI and foreign object YI. The barrier 8 has a bottom plate section directly below the lower rotary blade 5 where the foreign matter YI is mainly deposited, an obliquely upward slanting plate section which mainly guides the coarsely crushed material x1 to float on the inside rear side thereof, and an upper side. There is a vertical plate part on the inner rear side of the rotary blade 5 through which the coarsely pulverized material X2 mainly floats and a flat plate part that feeds and guides the coarsely pulverized material X2 to the fine pulverizer B. It is an impeller-shaped rotary blade disposed in the device B, and is fixedly supported by a rotation shaft 9a extending from left to right of the machine body 1 at a constant angle, as shown in FIG.

Fixed blades 11 are attached to the front and rear of the rotary blade 9, and 11 is a thin screen such as porous punching metal or mesh wire mesh, which covers the bottom side of the rotary blade 9 from the lower surface of the fixed blade 10. are doing.

Specifically, the eyes of this screen 11 are about 1 inch in diameter. Reference numeral 12 denotes a hopper having the function of receiving 2 pieces of finely pulverized Styrofoam, and has a through hole bored on one side of its bottom.

Reference numeral 14 denotes a blower that can freely suck and feed, which is attached and fixed to one side of the lower part of the machine body 1, and the suction and feed row 3 and the hopper 1
It is connected to the through hole No. 2, and the finely pulverized material X2 is sent by air pressure.

15 is a storage tank for finely crushed material X2, and its chest 1
5a is covered with a material such as porous punching metal, mesh cloth, or wire mesh so that air can be freely blown out. 16
is a top hopper installed at the top of the storage tank 15, and has an internal barrier 17 standing upright in a V-shaped cross section as shown in Figs. A feeding port 18 and a feeding groove 19 are formed.

A feed pipe connecting the discharge port 14a of the two-way prower 14 and the feed row 8, 21' is an opening/closing lid provided on one side of the hopper 16, and is mainly used in the recess 19a of the feed groove 19. It is convenient for removing foreign matter Y2 that may accumulate on the outer circumference.

A hopper 22 supports the bottom of the storage tank 15 with iron, and is supported and fixed to the upper edge of the body 1.

Reference numeral 23 denotes a traversing screw conveyor installed inside the feed pipe 24 at the bottom of the hopper 22, and is rotationally driven by a drive motor M2 supported at its rear end.

S is a recycling processing device made of pulverized styrofoam x 2, and in the first embodiment shown in Figs. 5 to 8, a pair of disk bodies,
That is, a fixed plate C and a rotary plate D rotating at high speed are supported facing each other.

Specifically, the gap between the circumference of the stationary member C and the rotary disc D in this opposing state is about 0.03 to 0.5 degrees. Reference numeral 25 denotes a cylindrical portion for a bearing on the rotary disk D side having a body portion 25a having a hemispherical cross section, and the rotary disk D is fixedly attached to the inner end of a rotary shaft 25b inserted in the cylindrical member 25. There is.

Reference numeral 26 denotes a flat rotary blade attached and fixed to the outer peripheral surface of the rotary disk D, 25c is a pulley attached and fixed to the outer end of the rotating shaft 25b, and M3 is a drive motor for the rotary disk D supported and fixed to the fuselage 1. A belt 25e is suspended and supported between a pulley 25d fixed to the drive shaft and the pulley 25c.

Reference numeral 25f represents an air intake hole provided on the inner circumference of the ear portion 25a. 27 is a supporting member on the fixed platen C side, and the inner cylinder 27b is attached to the center of the rear base 27a with bolts 27c.
A lid 27e of the body 25a is attached to the outer periphery of the base 27a.

Reference numeral 28 denotes an axial joint between a bracket 25g protruding from the lower part of the body 25a and a bracket 27f protruding from the lower part of the lid 27e, and 29 a stopper for fixing the upper part of the body 25a and the upper part of the lid 27e with cotton. It is a garment, and a rotary disk C is attached to the torso 25a.
The side lid can be opened.

24a is a bolt for attaching and fixing the feed pipe 24 to the rear base 27a, 24b is a pipe joint of the feed pipe 24, and 24a is an operation handle for finely adjusting the forward and backward movement of the fixed plate C supported by bearings on the rear base 27a. , a gear 30b is attached to the inner end of the rotating shaft 30a.
is fixedly supported.

Reference numeral 31 denotes a sliding ring of a stationary plate C that is inserted into the outer circumferential surface of the inner cylinder 27b, and 32 is a screw ring with thread grooves carved on the inner and outer circumferential surfaces.
Thread groove 31a carved on the outer peripheral surface of sliding ring 31 and lid body 27
The screw grooves 27g formed on the inner circumferential surface of the gear 30b mesh with each other.

Reference numeral 33 denotes a feeding port at the center of the fixed platen C, 34 and 35 indicate green grooves around each of the fixed platen C and the rotary platen D, and a vertical surface 34a is provided on the inclined wall surface on the inner circumferential side of the inner disk bodies C and D. A rough groove 34 having a mirror tooth shape and a coarse pitch PI is recessed along the inclined wall surface, and the corresponding flat surface of the outer peripheral edge of the discs C and D has a peripheral width The narrow groove 35 has a sawtooth shape and has a fine pitch P2, consisting of a shortest long pongee groove 36a, a longest narrow groove 35b, and an intermediate narrow groove 35c, which are formed to be longer and shorter at each coarse pitch PI of the rough groove 34.
is recessed, and the sharp portion 34c at the outer end of the rough groove 34 and the shortest length fine groove 35a of the fine groove 35 are appropriately configured.

36 is a feeding port for 3x granulated recycled materials drilled in one end of the body 25a, and 37 is a collection hopper supported and fixed on one side of the body 1, and the material is fed from the feeding port 36. The recycled materials x3 are collected into a bag container (not shown) attached to the outlet 37a at the lower end of the hopper 37. Incidentally, MI is a drive motor for the crushing devices A and B, and 38 is a pulley fixed to the rotating shaft of the motor MI, and a belt 38a is suspended between it and a pulley 9b fixed to the rotating shaft 9a. .

Further, a pulley 9c is fixed to the other side of the rotating shaft 9a, and a belt 9d is supported by the neck between the pulley 4b and the pulley 4b fixed to the rotating shaft 4a. A spur gear 4c is fixed to the other side of the rotating shaft 4a, and meshes with a spur gear 5b fixed to the rotating shaft 5a. Numeral 39 is a magnet piece attached to a suitable position on the back surface of the air current barrier 8, and attracts a foreign object YI such as a nail, which is a magnetized object.

In order to recycle waste materials such as Styrofoam X using the apparatus configured as described above, first, the Styrofoam X is successively introduced into the hopper 3 by opening an opening/closing lid (not shown) on the top of the hopper 3.

At this time, large foreign objects such as long nails inserted into the Styrofoam × or stones caught between them can be easily found by turning the Styrofoam × from front to back. It is desirable to remove it. Then, the styrofoam Even if foreign objects YI, such as pebbles and nail fragments, which were overlooked and thrown in during the preliminary treatment for foreign object removal, would break off and fall to the bottom side of the barrier 8 on the coarse crusher A side and deposit, and the nail fragments would also break off. In this case, it is attracted to the magnet piece 39.

On the other hand, the coarsely crushed lightweight Styrofoam material x 1, which has been knotted and separated, floats along the vertical slope of the barrier 8 due to the suction and feeding force of the blower 14 and overflows from the falling port 40 into the fine crushing device. It is sucked and fed into B.

In this way, the lightweight coarsely crushed material XI flows over the barrier 8, but on the other hand, 4
- Foreign substances YI such as stones and nails are blocked by the barrier 8, thereby effectively removing foreign substances in the A section of the coarse crusher. The coarsely crushed material x1 fed into the fine crushing device B is further finely crushed by the rotary blade 9 and the fixed blade 10, and the finely crushed material It is pneumatically fed through the feed pipe 20 from the through hole of the hopper 12 by the blower 14 and fed to the top hopper 16.

The finely pulverized material x2 fed centrifugally into the top hopper 16 overflows the barrier 17 and flows down into the storage tank 15 from which air can be freely blown. At this time, although sand grains still adhere to the finely pulverized material x 2 and are fed by air pressure, they become knotted during pressure feeding through the feeding pipe 20 and are dropped, or they are mixed into the top hopper 16, Feed groove 1 by pneumatic feed from
9 is settled and accumulated in the recess 19a. As a result, the lighter finely pulverized material X2 flows through the top barrier 17 of the storage tank 15, while the foreign matter Y2, such as sand grains, is blocked by the barrier 17, resulting in more complete foreign matter removal. When a certain amount or more of the finely pulverized material x2 is stored in the storage tank 15, the screw conveyor 23 at the bottom of the hopper 22 is operated by the drive motor M2, and the finely pulverized material X2 is fed into the reprocessing device S. At the same time, by operating the drive motor M3, the styrofoam is recycled. At this time, the finely crushed material in the storage tank 15 x 2
Although the amount of storage tank 15 increases or decreases, since the body 15a of the storage tank 15 is configured to freely blow out air, the air pressure sending force by the proar 14 increases or decreases the amount of storage, for example, when the amount of storage is large, the amount of air in the storage tank 15 increases or decreases. If the amount of air blown from the storage tank 15 is small and the surface layer of the storage tank 15 is strongly compressed with air, the amount of air blown out from the storage tank 15 is large and the surface layer of the storage tank 15 is weakly air pressed. This acts as a pressing force, and as a result, the amount of feed from the hopper 22 is constantly maintained and controlled.Therefore, the amount of feed into the recycling processing apparatus S can also be made uniform.In this way, the amount of feed is constantly maintained. The finely pulverized material x2 to be sent is fed by flowing down from the fixed plate C of the reprocessing device S and the rotary plate D which rotates at high speed.

Then, the centrifugal force accompanying the high-speed rotation of the rotary disk D overcomes the floating force of the lightweight finely pulverized material X2, and the finely pulverized material X2 is compressed and transferred toward the circumferential direction of the disks C and D. Observing the situation at this time in slow motion, first, due to the high-speed rotation of the rotary disk D, relatively large chip pieces of the finely crushed material It is further pulverized into fine pieces in the section). The 2 pieces of finely pulverized material containing small pieces scaled and crushed in this manner are pushed into the valleys of the coarse grooves 34 by the centrifugal force of the rotary disk D, and are pushed toward the outer circumference using the vertical surfaces 34a of the coarse grooves 34 as a barrier. They are forcibly transported. This finely ground material that is forcibly transferred x 2
The more it moves to the sharp part 34c of the lees groove 34, the more strongly it is pressed and compressed, and a phenomenon such as degassing of the individual finely pulverized materials X2 occurs before and after the stage of overflowing the pongee groove 35. In this way, it is press-fitted into the narrow groove 35 provided at the outermost edge of the fixed plate C and the rotary plate D, and is released from the gap between the two plates C and D at a position of 0.03 to 0.5 degrees. Moreover, due to the synergistic effect of the frictional heat formed in the narrow groove 35 portion of both disk bodies C and D due to the high speed rotation of the rotary disk D and the compressive force in the gap, foaming originally occurred. The degassing phenomenon of the finely pulverized material x 2 takes place instantaneously, and a moment later, while scattering from the narrow grooves 35 with minute gaps, among them the shortest long groove 35a, the finely crushed material does not become molten but becomes granulated. and scatters into the body portion 25a.

This granulated recycled material x 3 is taken in through the through hole 25f by the rotation of the rotary blade 26, and then
It is then fed into the collection hopper 37 and collected into a bag container attached to its outlet 37a. 9 to 11 show a second embodiment of the reprocessing apparatus S according to the present invention, in which the shortest length of the narrow grooves 35 formed on the outer peripheral flat surfaces of the disk bodies C and D of the first embodiment is shown. 35a is formed for each coarse pitch PI of the rough groove 34, thereby forming the sharp portion 34c of the rough groove 34 and the narrow groove 35.
A and a form a lotus passage.

This also achieves the same function as the first embodiment.
In addition, in the present invention, one of the disk bodies C and D is embodied as a fixed plate and the other as a rotary disk D that rotates at high speed, but it is also possible to support the pair of disk bodies C and D facing each other so as to be able to rotate at a relatively high speed. in,
Styrofoam X can be recycled. Furthermore, in the above device, a means for horizontally transporting the finely crushed material X2 by means of a screw conveyor 23 is provided between the bottom of the hopper 22 and the recycling device S. It is also possible to have a configuration where the

According to the present invention, in the above-mentioned styrofoam recycling processing apparatus, a rough groove is formed on the inner circumferential part of the pongee groove, and the rough groove and the pongee groove are formed in a circular manner, so that the styrofoam is fed between a pair of disc bodies. The pulverized material is pulverized into rice grains in the ridges of the rough grooves, and the pulverized material can be forcibly, smoothly and quickly transferred toward the outer circumference using the lees grooves as a barrier.

Therefore, as a granulated recycled material, the product unevenness can be eliminated,
This will contribute to the further improvement of the regeneration processing capacity, and in turn, it will be able to greatly contribute to this type of technical field as a practical dedicated machine. It brings about various effects such as.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional front view showing the entire device, Figure 2 is a side view,
Figure 3 is a plan view of the crushing device, Figure 4 is a half cross-sectional view of the top of the storage tank, Figure 5 is an enlarged vertical cross-sectional view of the styrofoam recycling equipment, and Figure 6 is the fixed plates installed opposite each other. and a half-sectional view of the rotary disk, FIGS. 7a and 7b are plan views showing the inner sides of the rotary disk (figure a) and the stationary disk (figure b), and FIG. 8 is a partially enlarged perspective view of the state shown in FIG. 7. , Figures 9 to 11 show a second embodiment of a rotary disk and a fixed plate, in which Figure 9 is a half-sectional view showing a pair of disk bodies installed opposite each other, and Figures 10 a and b are rotating disks. FIG. 11 is a plan view showing the inside of the board (Fig. a) and the fixed board (Fig. b), and FIG. 11 is a partially enlarged perspective view of the state shown in FIG. 10. Code list, X: Styrofoam, Y: Foreign matter,
A: Set pulverizer, B: Fine pulverizer, C: Fixed plate, D: Rotating plate, S...
...Reproduction processing device, P...Pitch, 6,11...
Screen, 8, 17... Barrier, 14... Blower, 15... Storage tank, 34... Rough groove, 35... Pongee groove. Figure 2 Figure 3 Figure 4 Figure 1 Figure 5 Figure 6 Figure 8 Figure 7 Figure 9 Figure 11 Figure 10

Claims (1)

[Claims] 1. A narrow groove 35 is formed in the outer peripheral edge of the disc bodies C, D, and the pair of disc bodies C, D are supported facing each other so as to be able to rotate at a relatively high speed. In an expanded polystyrene recycling processing apparatus configured to process and recover the crushed material X2 of expanded polystyrene X supplied into the interior as a granulated recycled material from the narrow grooves 35, coarse grooves 34 are formed in the inner circumference of the narrow grooves 35. A styrofoam recycling processing apparatus characterized in that the coarse grooves 34 and the narrow grooves 35 are formed in a communicating manner. 2. The polystyrene foam according to claim 1, characterized in that the coarse grooves 34 are formed from a vertical surface 34a and an inclined surface 34b, and have a coarse pitch P1 compared to the pitch P2 of the narrow grooves 35. Regeneration processing equipment. 3. The styrene foam recycling device according to claim 1, wherein the outer sharp portion 34c of the coarse groove 34 and the shortest elongated groove 35a of the narrow groove 35 are configured to communicate with each other.