KR101279902B1 - Apparatus for diminishing expanded polyethylene pellet - Google Patents

Abstract

The present invention relates to an EPE reducer, the main frame fixed to the installation surface; A feeding cylinder fixed to an upper surface of the main frame and having an opening formed at one end in a radial direction; A feeding screw embedded in the feeding cylinder; EPE waste is installed in the upper part of the opening of the feeding cylinder without gap, and a plurality of rotary blades are fixed on the pair of rotary shafts with a phase difference from each other, and are alternately installed between the rotary blades of the hook shape installed on the pair of rotary shafts. A lower crusher for secondary crushing in the form of breaking the material; An upper crusher installed at an upper interval with a lower crusher and having a crushing blade-type crushing blade to pull the EPE waste material input while being rotated at a lower speed than the lower crusher; An input hopper provided at an upper side of the upper crusher; A controller provided on the main frame to control the rotational operation of the feeding screw, the lower shredder, and the upper shredder, and to control the heating temperature when heating to melt the feed inside the feeding cylinder; It provides an EPE container characterized in that it comprises a; extrusion die fixed to the discharge end of the feeding cylinder.
According to the present invention, when the collected EPE material is recycled into the container for recycling, the cutting of the EPE material is carried out by cutting through a two-stage crushing blade having a speed difference, thereby smoothing the cutting of the tough EPE, and leaving no time difference after the cutting. By immediately extruding the feeding crimp reduction, it is possible to drastically improve the processing efficiency and to obtain economic efficiency.

Description

EPE Reducer {APPARATUS FOR DIMINISHING EXPANDED POLYETHYLENE PELLET}

The present invention relates to an EPE (Expanded PolyEthylene) reducer, and more particularly, an improved EPE reducer to easily and smoothly crush waste EPE material, which is not easily broken because of its strong elasticity and excellent resilience and durability. It is about.

In general, the container is a mechanical device for reducing the volume by minimizing the porosity of the material, such as waste styrofoam or waste polyurethane, a hopper to which the waste styrofoam is usually injected, a crushing unit for crushing the waste styrofoam injected through the hopper, crushing And an extruding part for heating and melting the extruded waste styrofoam and extruding the crushed part and the extruding part.

Thus, the waste styrofoam ingot extruded through the extruded part is continuously extruded with a rectangular or circular cross section according to the shape of the ingot extruded part provided at the end of the extruded part, and then cooled through the cooling zone after extrusion, and then constant It is cut to size and then recycled by pelletization.

The container used for this purpose is mainly developed for the extrusion after crushing compression of Styrofoam (Expended Poly-Styrene: ESP), and many patent technologies have been disclosed for the purpose of improving the crushing efficiency, compression performance, and extrusion performance. There are, for example, Patent No. 0515420, Patent No. 054106, Patent No. 0795164, Publication No. 2005-0015872, and the like.

In this regard, the present applicant also has technologies related to a container for waste styrofoam treatment, such as Patent No. 1036770 and Registration No. 0453086.

However, styrofoam, which is widely used throughout the industry, such as disposable containers, building materials, buoyancy materials, ornaments, or insulation materials, is easy to be broken and has low strength, and thus is replaced with EPE (foamed polyethylene) and EPP (foamed polypropylene). New materials, such as the back, have emerged, and they are being used not only for the fields in which styrofoam was used, but also for various purposes such as reflective films, fruit packaging materials, automobile bumpers, and electronic component packaging materials for orchard farms.

Nevertheless, the recycling of these materials is difficult to crush and reduce because of the high elasticity and toughness of the materials themselves, so the processing cost is too high compared to the production. As a result, the disposal of waste EPE material became a social issue.

In other words, when feeding with a crusher to reduce the EPE material using the existing styrofoam reducer, EPE is elastic and tougher than styrofoam, so EPE is not broken or cut like styrofoam (EPS) and pressed by the crushing blade. As it progresses in the state that is not crushed eventually, it is wound up to the crusher and filled up to stop the operation of the crusher, causing the processing efficiency to drop drastically, and it takes too much time and cost to repair and repair the production itself. It will lead to ineffective results.

To improve this, the vibrator was placed around the crusher and fed while vibrating to feed the result.

Therefore, it is urgently required to develop a dedicated reducer capable of treating EPE, and as a part thereof, registered Patent No. 0637676 has been disclosed.

Patent No. 0637676 discloses a pair of rotary shafts installed in parallel with each other, a rotary cutter coupled to the rotary shaft at a predetermined interval, the grinding apparatus having a drive device for driving the rotary shaft, the rotary cutter is coupled to the rotary shaft Rotating blade is formed symmetrically about the center, including a locking portion bent in the rotational direction from the end of the rotary blade, and arranged to have a phase angle of a predetermined angle with mutually adjacent rotary cutters installed on the same rotary shaft, any one rotary blade At the moment of crushing the styrofoam, it can be seen that by locking the styrofoam of the neighboring rotary blade by holding the styrofoam to minimize the pulverization of the crushed styropol to achieve low noise and high grinding efficiency.

Nevertheless, in the case of the above-described patents, the effectiveness of the treatment of EPE is much lower than that described in the detailed description. The reason is that the disclosed patents are configured to handle all styrofoams of all materials, in particular, Since the purpose is to improve the efficiency and noise, the focus is only on improving the structure of the crusher, that is, the rotary cutter. Therefore, the relationship between the input of the EPE material, the crushing and the compression feeding cannot be compensated. EPE, which has high elasticity, also causes the phenomenon of winding on the rotary cutter, which lowers the driving efficiency of the equipment. Above all, even if the cutting occurs, the swelling phenomenon occurs due to the elastic recovery force after cutting. The problem of stopping the drive itself has not been solved.

In addition, since the feeding screw structure of the conventional reducer is a simple screw type, excessive energy supply for melting the feeding object during feeding requires excessive energy waste.

For this reason, in the case of the patent (see Fig. 6 of Patent No. 0637676), since the rotating cutter constituting the shredder is composed of only one, the applicant has experimented several times, but in the case of EPE, the rotating cutter shown in the disclosed patent Only one did not cut smoothly, and some of the cuts swelled severely due to elastic resilience, and there was no means to suppress them, so as mentioned earlier, the same problem occurred that the coil was wound or pinched after a certain time. In addition, there is a problem that the feeding itself is too far away because the falling distance with the feeding screw that is responsible for the compression function to extrude and compress the cutting material.

The present invention has been completed to solve all the problems of the prior art as described above from various angles, and to solve them completely, and to grasp the EPE having high elasticity and toughness with a blade rather than cutting it with a blade at the moment. After cutting in the form of pulling and cutting, it feeds immediately without leaving any time difference and extrudes it by pressing and reducing it, thereby improving processing efficiency, securing economic efficiency, and improving the structure of the feeding screw to improve the supply of electric energy supplied for melting the feeding object. Its main purpose is to provide an EPE reducer that prevents waste.

The present invention is a means for achieving the above object, the main frame fixed to the installation surface; A feeding cylinder fixed to an upper surface of the main frame and having an opening formed at one end in a radial direction; A feeding screw embedded in the feeding cylinder; EPE waste is installed in the upper part of the opening of the feeding cylinder without gap, and a plurality of rotary blades are fixed on the pair of rotary shafts with a phase difference from each other, and are alternately installed between the rotary blades of the hook shape installed on the pair of rotary shafts. A lower crusher for secondary crushing in the form of breaking the material; An upper crusher installed at an upper interval with a lower crusher and having a crushing blade-type crushing blade to pull the EPE waste material input while being rotated at a lower speed than the lower crusher; An input hopper provided at an upper side of the upper crusher; A controller provided on the main frame to control the rotational operation of the feeding screw, the lower shredder, and the upper shredder, and to control the heating temperature when heating to melt the feed inside the feeding cylinder; It provides an EPE container characterized in that it comprises a; extrusion die fixed to the discharge end of the feeding cylinder.

At this time, the feeding cylinder is formed by joining the two parts divided into the supply part and the improved part, the inner diameter of the improved part side to be joined is tapered upwardly inclined upward in the discharged direction, the air discharge port is formed in a part of the length of the improved part, the improved part It is also characterized by an additional thermocouple installed around the discharge end of the instrument to measure the internal temperature.

In addition, the feeding screw embedded in the feeding cylinder has a different pitch for each section with a predetermined interval in the longitudinal direction, but the pitch difference is formed to decrease toward the discharge end, one-pitch from the 1/3 end point to the discharge end from the discharge end The cut pitch is alternately repeated, but the cut pitch is characterized by being cut at 120 ° intervals along the radial direction of the feeding screw.

In addition, a truncated cone surface is formed at the discharge end of the feeding screw, a pinwheel shaped grinding portion is protruded at the truncated cone surface, and the inner circumferential surface of the extrusion die in contact with the truncated cone is formed in a shape corresponding to the truncated cone shape. The inclined surface is also characterized in that the polishing member in contact with the grinding portion is formed protruding.

In addition, the lower shredders are installed in a pair of lower rotary shafts, which are installed in parallel to each other across the lower housing and the lower housing in a horizontal direction, with a predetermined interval on the lower rotary shaft, but are linearly rotated by different phase differences from each other. A plurality of rotary blades are arranged alternately with each other fixed to each other between the lower rotary shafts, and fixed to the inner wall surface of the lower housing to prevent the shredding material caught in the space between the rotary blades The inner wall surface of the scraper disposed between the lower housing and the lower housing is formed in an arc shape so as to minimize the end and the gap of the rotary blade, the crushed material is cut and guided directly into the feeding cylinder from the outlet of the lower housing to extend to the opening of the feeding cylinder. It is also characterized by the inclusion of the ingress guide.

According to the present invention, when the collected EPE material is recycled into the container for recycling, the cutting of the EPE material is carried out by cutting through a two-stage crushing blade having a speed difference, thereby smoothing the cutting of the tough EPE, and leaving no time difference after cutting. By immediately extruding the feeding crimp reduction, it is possible to drastically improve the processing efficiency and to obtain economic efficiency.

In addition, during feeding for extrusion, the structure of the feeding screw is specially improved to disperse the feeding as much as possible to reach the melting point in the shortest time, thereby increasing the efficiency of the feeding screw. The effect of improving the quality of the ingot product can also be achieved by preventing the formation of water.

1 is a front view showing a partial cross-sectional view to know the structure of the EPE container according to the present invention.
2 is an internal structural view of the EPE container according to the present invention.
Figure 3 is an illustration of a lower shredder constituting the EPE container according to the present invention.
Figure 4 is a sample picture actually produced to know the interior of the lower shredder constituting the EPE container according to the present invention.
5 is an exemplary view showing a feeding cylinder constituting the EPE container according to the present invention.
6 is an exemplary view of a feeding screw constituting the EPE container according to the present invention.
Figure 7 is an exemplary view showing an extrusion die (Die) is installed at the outlet of the feeding cylinder constituting the EPE container according to the present invention.
8 is a real picture showing an example of manufacturing the EPE container according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

The EPE reducer according to the present invention cuts the injected EPE to the size of the bottle cap as much as possible or less, and after being cut, it is fed in the shortest time, for example, 1-2 seconds, thereby eliminating the congestion itself, thereby swelling as much as possible. Its main feature is to further provide a means for suppressing and guiding it from swelling to maximize processing efficiency.

To this end, the EPE reducer according to the present invention includes a main frame 100, as shown in Figs.

The main frame 100 is a body of the present invention EPE container, it is fixed to the installation surface is a means for providing a stable support force.

In addition, a feeding cylinder 200 is installed at an upper portion of the main frame 100, and a feeding screw 300 is embedded in the feeding cylinder 200.

In addition, an extrusion die 400 for extruding the melt is installed at the outlet end of the feeding cylinder 200.

At this time, the feeding screw 300 is not shown, but is configured to be rotated by the power of the feeding motor (not shown).

In addition, a part of the rear end of the feeding cylinder 200 is opened, and the opening is provided with a lower shredder 500 disposed as close as possible to the feeding screw 300.

By doing so, it is possible to be fed by the feeding screw 300 immediately within 1-2 seconds of the crushed through the lower shredder 500, it is possible to suppress the problem of swelling EPE as much as possible.

In addition, the upper crusher 600 is installed at intervals above the lower crusher 500, these are connected to the input hopper 700, the heating in the feeding cylinder 200, the rotational drive of the feeding screw 300 And a controller 800 that controls rotational driving of the lower crusher 500 and the upper crusher 600.

The EPE container of the present invention configured as described above may have an appearance as shown in FIG. 8, which is an actual product picture of an order issued by the Korea Foamed Styrene Recycling Association.

In addition, the lower crusher 500 and the upper crusher 600 are connected to be rotatably driven by each of the lower drive motor 510 and the upper drive motor 610 fixed on the main frame 100, in particular the lower The shredders 500 are designed to have a speed difference with each other so that the shredders 500 rotate faster than the top shredder 600 and are controlled by the controller 800.

This is to make it possible to pull off the processed material of EPE material that is pulled after being put in. Since the simple cutting using the blade does not cut well due to the characteristics of EPE, the rotation speed difference between both can be cut while also cutting. Is designed to have.

Here, the lower shredder 500 is a form similar to the rotary blade disclosed in the Patent No. 0637676 mentioned in the prior art, but an improved structure that completely compensates for the problem of the failure of fracture due to the space of the form Im sure.

In more detail, the lower shredder 500 according to the present invention is parallel to each other across the lower housing 520 and the lower housing 520 as illustrated in FIGS. 2, 3 and 4. A pair of lower rotary shafts 530 and a plurality of lower rotary shafts 530 are installed at predetermined intervals with a predetermined interval therebetween, so that a linear crushing operation is performed during rotation by varying phase differences with each other. The ones fixed to each other are fixed and rotated to the inner wall surface of the lower housing 520 so as to prevent the shredding material is caught in the space between the plurality of rotary blades 540 and the rotary blades 540 alternately arranged with each other. The scraper 550 disposed between the blades 540 and the inner wall surface of the lower housing 520 are formed in an arc shape so that the crushed material is cut (exactly broken) while minimizing the end and the gap of the rotary blade 540. Right away Guiding cylinder 200 is configured to include a gangip guide 560 extending opening portion of the feeding cylinder 200 from the discharge port of the lower housing 520 to be guided to the inside.

At this time, the indentation guide 560 is advantageous as the shorter, because the interval between the outlet of the lower housing 520 and the feeding screw 300 inside the feeding cylinder 200 is small, immediately before the crushed object is inflated while being elastically restored This is because the feeding phenomenon can be minimized by feeding.

Here, it is preferable that the size of the crushed product crushed through the lower crusher 500 is designed to have a size of less than the bottle cap, which is not melted in a short time in the hot water even if put in hot water, but if the ice crushed finely put in hot water It reflects the reason that can be melted in a short time.

In addition, an upper crusher 600 is installed at an upper portion of the lower crusher 500, all of which are installed on a passage of the input hopper 700.

In addition, the upper shredder 600 has a structure similar to that of the lower shredder 500, but is more sparse, and the spacing between the shredding blades 640 is further spaced apart from that of the lower shredder 500.

That is, the upper shredder 600 is responsible for the rough crushing, the rotation speed is relatively slower than the lower shredder 500, so as to attract the EPE crushing object introduced into the input hopper 700 to maintain a state of tight engagement. When the lower shredder 500 rotates at a faster speed and pulls it, it becomes an instant fixation point so that the tough EPE shredding object can be broken.

Therefore, in the static view, when the upper crusher 600 serves as a momentary fixing point while holding the EPE crushed object, the lower crusher 500 linearly aligns the EPE crushed object by the phase difference of the rotary blade 540. At the same time hitting, cutting and cutting are performed continuously.

On the other hand, the feeding cylinder 200 is formed in a cylindrical shape, as shown in Figure 5, the end of the length is formed with an opening 210 for receiving the falling object falling from the lower shredder 500.

In addition, the feeding cylinder 200 is divided in the longitudinal direction is divided into the supply unit 220 and the improvement unit 230 and are connected to each other to form one feeding cylinder 200.

At this time, the inner peripheral surface of the distal end of the improved portion 230 is connected to the tapered portion 232 is formed to guide the large input and small discharge.

In addition, the air discharge port 234 is formed in a part of the length of the improvement unit 230 is configured to increase the feeding power by smoothly discharging the instantaneous air generated, which is registered by the applicant for the registered room No. 0453086 It is also disclosed in the call.

In addition, the thermocouple 236 is installed in the vicinity of the discharge end of the improvement unit 230 is configured to measure and control the temperature when the internal object is melted.

In addition, an extrusion die 400 as illustrated in FIG. 7 is installed at the discharge end of the improved portion 230.

The extrusion die 400 is a means for guiding the discharge like a rice cake when the feed is melt-extruded, the side fitted to the discharge end of the improved portion 230 is inclined, the inclined surface is a high strength and hardness abrasive member ( 410 is installed is configured to completely exit the melt even melted.

On the other hand, as shown in Figure 6, the feeding screw 300 is designed to narrow the interval of the pitch by a predetermined interval toward the discharge end, in particular, from the discharge end to the point 1/3 of the total length of the original pitch 310 ) And the broken pitch 320 are alternately formed.

At this time, it is particularly preferable that the cut pitch 320 has a shape in which three portions are cut at 120 ° in the radial direction of the feeding screw 300.

As such, the reason why the cut pitch 320 and the one-pitch (not continuous) 310 are alternately formed is to feed through the one-pitch 310 and through the cut pitch 320. In order to disperse the feeding object as much as possible by dispersing the feeding object completely radially from the inner diameter of the feeding cylinder 200 to melt in the shortest time.

Having such a structure does not have to lengthen the length of the feeding cylinder 200, it is possible to reduce the amount of electrical energy input compared to the existing is efficient.

In addition, the discharge end of the feeding screw 300 is protruded in the form of a truncated cone, protruding truncated surface 330 has a roughly pinwheel shaped grinding portion 340 is formed.

Therefore, the abrasive member 410 and the grinding part 340 of the extrusion die 400 disposed in contact with the truncated surface 330 acts as if they grind each other, so that the fine-sized granules do not melt during feeding. Since the melt is completely ground and discharged, the quality of the extruded ingot is improved.

As described above, the EPE container according to the present invention collects EPE waste material and then inserts the waste material into the hopper 700 so that the EPE waste material is cut by the interaction of the upper shredder 600 and the lower shredder 500. After crushing, the feeding screw 300 is supplied immediately without time difference to prevent crushing and elastic restoration at the same time, thereby preventing crushing objects from being caught or wound between crushing blades or rotary blades, thereby improving crushing efficiency.

In addition, by specially processing the structure of the feeding cylinder 200 and the feeding screw 300, the input is increased and the discharge is small, so that both the melting efficiency and the feeding efficiency can be increased. By doing so, the quality of the ingot product can be improved.

In particular, due to the special structure of the feeding cylinder 200 and the feeding screw 300 has a sufficient efficiency even if the length is made short, it is possible to reduce the input electrical energy can also obtain an energy saving effect.

100: main frame 200: feeding cylinder
300: feeding screw 400: extrusion die
500: lower shredder 600: upper shredder
700: Input Hopper 800: Controller

Claims (5)

A mainframe fixed to the installation surface;
A feeding cylinder fixed to an upper surface of the main frame and having an opening formed at one end in a radial direction;
A feeding screw embedded in the feeding cylinder;
EPE waste is installed in the upper part of the opening of the feeding cylinder without gap, and a plurality of rotary blades are fixed on the pair of rotary shafts with a phase difference from each other, and are alternately installed between the rotary blades of the hook shape installed on the pair of rotary shafts. A lower crusher for secondary crushing in the form of breaking the material;
An upper crusher installed at an upper interval with a lower crusher and having a crushing blade-type crushing blade to pull the EPE waste material input while being rotated at a lower speed than the lower crusher;
An input hopper provided at an upper side of the upper crusher;
A controller separately installed on the main frame to control the rotational operation of the feeding screw, the lower crusher, and the upper crusher, and to control the heating temperature when heating to melt the feed inside the feeding cylinder;
EPE container comprising a; extrusion die fixed to the discharge end of the feeding cylinder.
The method according to claim 1;
The feeding cylinder is formed by joining two parts divided into a supply part and an improved part to each other, and the inner diameter of the improved part side to be joined is tapered upwardly in the discharged direction, and an air outlet is formed at a part of the length of the improved part, and the discharge part of the improved part is discharged. EPE reducer characterized in that the thermocouple is further installed to measure the internal temperature around the end.
The method according to claim 1 or 2,
The feeding screw embedded in the feeding cylinder has a predetermined pitch in the longitudinal direction and has a different pitch for each section, and the pitch difference becomes smaller toward the discharge end, and the one-third length from the discharge end to the discharge end is cut off. The pitch is repeated alternately, but the broken pitch is formed EPE cut off at intervals of 120 ° along the radial direction of the feeding screw.
The method according to claim 3;
A truncated conical surface is formed at the discharging end of the feeding screw, and a pinwheel shaped grinding portion protrudes from the conical surface, and an inner circumferential surface of the extrusion die in contact with the truncated conical surface is formed in a shape corresponding to the truncated conical surface. EPE container, characterized in that the polishing member is in contact with the chain portion formed protruding.
The method according to claim 1;
The lower shredders are installed in a pair of lower rotary shafts, which are installed parallel to each other across the lower housing and the lower housing in a horizontal direction, with a predetermined interval on the lower rotary shafts, but linearly shredding operation when rotating by different phase differences. And a plurality of rotary blades alternately arranged between the lower rotary shafts, and fixed to the inner wall surface of the lower housing and between the rotary blades so as to prevent the shredding material from being caught in the space between the rotary blades. Indentation guide extending from the outlet of the lower housing to the opening of the feeding cylinder so that the scraper to be disposed and the inner wall surface of the lower housing are formed in an arc shape and the crushed material is cut at the same time while minimizing the end and the gap of the rotary blade and guided directly into the feeding cylinder. EPE reducer characterized in that comprises a.

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