KR102657898B1 - Crushing device for plastic bottles - Google Patents

Abstract

The present invention relates to a plastic bottle crushing device, and more specifically, to improve the structure of a device for crushing plastic bottles such as PET bottles to enable crushing and simultaneous crushing without the need to compress and supply plastic bottles, which are the objects of crushing, in advance. In addition, it relates to a plastic bottle crushing device that quickly and smoothly supplies plastic bottles to the crushing cutter to increase crushing efficiency.

Description

Crushing device for plastic bottles}

The present invention relates to a plastic bottle crushing device, and more specifically, to a crushing device that quickly and efficiently crushes and collects plastic bottles such as PET bottles.

In general, plastic bottles such as PET bottles are transparent, lightweight, durable, and have high carbon dioxide and oxygen barrier properties, so they are often used as beverage or bottled water containers. However, as environmental pollution due to plastic bottles discarded after use is becoming extreme, they are used in clothing, bags, etc. , various research and development on recycling into other products such as textiles are being conducted, and new policies are being steadily introduced.

In particular, as mandatory separate disposal of transparent PET bottles has been implemented for apartment complexes since 2020, the disposal of plastic bottles is being strictly managed. For example, transparent PET bottles are first washed, the label is removed, and then pressed flat to reduce the volume. Then, it must be disposed of separately in a dedicated collection box with the lid closed to prevent foreign substances from entering.

However, in this separation process, the plastic bottle must be pressed flat up and down, but this work is quite cumbersome and the correct pressing method is not well known, so most of them are discarded by squeezing them sideways or twisting them roughly by hand.

In addition, in order to recycle plastic bottles, a shredding process must be preceded. For example, plastic bottles, which are the objects of shredding, are put into a shredding device and shredded with a shredding cutter that rotates with power transmitted from the drive unit to collect the shredded material in the form of chips and then liquidate the shredded material. It is used in the recycling process by separating the cap and bottle parts based on the difference in specific gravity.

However, at this time, if the plastic bottle is not properly compressed and crushed, there is a problem that the work is delayed as the plastic bottle gets stuck between the crushing cutters due to its volume. Moreover, when a large amount of plastic bottles are put in at once, a lot of power is required. There was concern that crushing performance would deteriorate as the load occurred.

Korean Patent Registration No. 2151565 Plastic and PET bottle crusher (2020.08.28) Korean Patent Registration No. 2259475 PET bottle crushing device and crushing system equipped with the same (2021.05.27) Korean Patent Registration No. 2331691: Grinding system with a crusher exclusively for plastic bottles (2021.11.23) Korean Patent Registration No. 1925249 PET bottle shredder (2018.11.28)

The present invention was invented to solve the above problems. It supplies plastic bottles smoothly and crushes them quickly, reduces the load during the crushing process, improves crushing efficiency, and simultaneously compresses and crushes plastic bottles. To provide a plastic bottle crushing device that further improves workability and productivity.

In order to achieve the above object, a plastic bottle crushing device according to the present invention is a crushing device for crushing plastic bottles, including PET bottles, including a housing having a receiving space therein; A supply unit installed on the upper side of the housing to supply plastic bottles; a compression crushing unit connected to the lower part of the supply unit and configured to simultaneously press and crush the plastic bottle by pushing it while drilling a hole in the plastic bottle; And a driving unit that provides a rotational driving force to the compression crushing unit.

The compression crushing unit is a pair of gear-type cutters that intersect and engage with each other, and a crushing cutter consisting of first and second gear cutters in which a plurality of disks with rotating blades formed along the edge are arranged in a row; And a plurality of hook rotation plates installed between the plurality of disks forming the crushing cutter to pull down the plastic bottle into the crushing cutter.

At this time, the compression crushing unit is installed between the disks of the first gear cutter or the second gear cutter where the hook rotating plate forms the crushing cutter, and a round hook that bends downward along the edge is formed.

In addition, the compression crushing unit further includes a rotating wing installed on the upper part of the crushing cutter to push the plastic bottle toward the crushing cutter and puncture the plastic bottle, wherein the rotating wing is sharply formed along the tip of each wing. A formed punching edge is provided.

In addition, the compression crushing unit further includes a guide rib installed between the rotating wing and the crushing cutter to guide the plastic bottle supplied from the hopper toward the crushing cutter, wherein the upper end of the guide rib is attached to the lower wall inside the hopper and The lower end is formed to extend inclinedly at a predetermined angle toward the upper side of the crushing cutter.

In addition, the crushing device according to the present invention is characterized in that it further includes a debris removal unit that pushes and removes debris so that it is not caught in the compression crushing unit.

The debris removal portion has a blade shape and protrudes between the disks of the first and second gear cutters forming the crushing cutter.

In addition, the shredding device according to the present invention is provided with a collection box on the lower side of the housing, and a chute part installed at the upper side discharge port of the housing to adjust the falling position of the shredded plastic bottle material generated by the shredding cutter in the collection box. It is characterized by further inclusion.

The chute unit includes a motor shaft installed on the lower side of the housing, a geared motor connected to the motor shaft to provide driving force to the motor shaft, and a geared motor installed on the motor shaft to rotate and drive the crushed material discharged from the crushing cutter. It includes a chute sensor installed on the lower side of the impeller and the housing to detect the amount and height of shredded material loaded in the collection box.

In addition, the crushing cutter according to the present invention processes the cutting blade with a precision machine after laser processing, and the angle of the inner bent portion (31a) of the cutting blade is 17 to 18°, and the outer bent portion (31b) is double inclined. It is formed and the angles are 21 to 23° and 23 to 25°, respectively.

As discussed above, according to the plastic bottle crushing device of the present invention, in the crushing device for crushing plastic bottles including PET bottles, a rotating wing is installed on the top of the crushing cutter to puncture the plastic bottle and at the same time push it toward the crushing cutter. Even if plastic bottles are introduced without being separately compressed, the crushing cutter can easily perform compression and crushing at the same time. In addition, a hook rotating plate and debris removal portion are provided between and on the sides of the crushing cutters, so that the plastic bottle can be pulled to the crushing cutter and crushed. In the process, a continuous crushing process is possible by removing debris from the crushing cutter in advance to prevent it from being caught in the crushing cutter, thereby reducing the load, so it has the advantage of being able to crush quickly and efficiently overall.

In this way, the present invention improves the structure of the crushing device to pull, push, and collect the objects to be shredded into the crushing section, thereby significantly improving the crushing efficiency and improving workability and productivity.

Figure 1 is a front view of a plastic bottle crushing device according to a preferred embodiment of the present invention.
Figure 2 is a side view of Figure 1
Figure 3 is a partially exploded perspective view of Figure 1
Figure 4 is a diagram showing a crushing unit according to the present invention.
Figure 5 is a view showing a chute part according to the present invention

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings so that those skilled in the art can easily implement the technical idea of the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein.

Figures 1 to 3 are diagrams specifically showing the configuration of a plastic bottle crushing device according to the present invention.

According to the drawing, the plastic bottle crushing device according to the present invention relates to a device that automates all or part of the process of compressing and crushing plastic bottles, including transparent PET bottles, and includes a housing (10) having a receiving space therein; A supply unit (20) installed on the upper side of the housing to supply a plastic bottle (P); A compression crushing unit (30) connected to the lower part of the supply unit and configured to simultaneously press and crush the plastic bottle by pushing it while drilling a hole in the plastic bottle; and a driving unit 40 that provides a rotational driving force to the compression crushing unit, and further includes a debris removal unit 50 that pushes and removes debris to prevent it from being caught in the compression crushing unit.

Hereinafter, this will be explained in detail.

The housing 10 forms the exterior of the crushing device according to the present invention.

As shown in Figure 1, the housing 10 is in the shape of a rectangular box, and the internal accommodation space is divided into two upper and lower parts, and has upper and lower spaces 10A and 10B, and in front of the housing 10 are upper and lower doors 11, respectively. 12) is installed so that it can be opened and closed.

The housing 10 has an inlet 13 formed at the upper front part of the upper space 10A through which plastic bottles, such as PET bottles, which are objects to be shredded, are input, and an outlet 14 through which the shredded material is discharged at the lower bottom part. It is formed, and the upper space 10A and the lower space 10B of the housing communicate with each other through the outlet 14.

The upper space 10A of the housing 10 accommodates a supply unit 20, a compression crushing unit 30, and a driving unit 40, which will be described later, and a shredded material collection box (not shown) is accommodated in the lower space 10B. , this housing 10 serves to protect each component accommodated therein as well as fixing them in a specific position.

In addition, the housing 10 is provided with a play adjustment member 15 at the edge of the bottom so that the height can be adjusted depending on the installation location or the height of the user, and is equipped with a caster 16 for movement to another location. You can.

The supply unit 20 is installed on the upper inside of the housing to supply plastic bottles (P), and consists of a hopper 21 with a predetermined space.

The hopper 21 is formed in a cylindrical shape with the upper and lower parts open, and is disposed on the left and right sides (left in the drawing) of the upper space 10A of the housing to supply plastic bottles through the upper opening connected to the inlet 13. (P) provides a path to the crushing cutter described later.

As shown in Figure 2, this hopper 21 is formed to be vertically long, but the lower part is narrower than the upper part, and is formed to be inclined downward at a predetermined angle toward the rear, so that the plastic bottle (P) passing through the hopper is inside the hopper. It is possible to move naturally to the front side of the lower part of the hopper (crushing cutter side) without any accumulation.

Figure 4 is a diagram showing a compression crushing unit according to the present invention.

The compression crushing unit 30 is connected to the lower part of the supply unit and is configured to crush and crush plastic bottles at the same time. It includes a crushing cutter 31 and a hook rotating plate 32, and includes a rotating wing 33 and a guide. It further includes ribs 34.

As shown in Figures 3 and 4, the crushing cutter 31 is installed at the lower part of the hopper to crush and crush plastic bottles, and includes a pair of gear-type cutters that intersect and engage with each other, that is, first and second cutting cutters. It is composed of (311, 312), and the first and second cutting cutters (311, 312) each consist of a plurality of disks with cutting blades formed continuously along the edge, arranged in a row at a predetermined interval.

The cutting blade of the crushing cutter 31 has an inner bent portion (31a) with an angle of 17 to 18° (portion ⒜), and the outer bent portion (31b) is formed with a double slope and has an angle of 21 to 23° (⒝). part) and 23 to 25° (part ⒞). When set to this angle, plastic bottles can be cut into smaller sizes.

This crushing cutter 31 is precisely processed after laser cutting to form a cutting blade, and then repeatedly subjected to high-temperature heat treatment and cooling to provide high strength, hardness, and durability, thereby preventing bending deformation or breakage.

The crushing cutter 31 is built into a cutter box 35 in which first and second cutting cutters 311 and 312 are installed in combination with the lower part of the hopper 21, and the shaft of the driving unit, which will be described later, is provided on the sides 353 and 354 of the cutter box. A pair of fixing holes 35a are formed through the hole so that it can be installed. Accordingly, the first and second cutting cutters 311 and 312 are mounted on the shaft and rotated by the driving unit to crush the supplied plastic bottle while passing it between them.

At this time, the first and second cutting cutters of the crushing cutter 31 may be formed to have the same size, or the first and second cutting cutters 311 and 312 may be configured to have different sizes to increase the rotation speed. .

A plurality of hook rotating plates (32) are installed between the plurality of disks forming the crushing cutter to pull the plastic bottle down into the crushing cutter (31).

The hook rotating plate 32 has a pinwheel shape and is made of a disk with hooks 321 formed continuously along the edge similar to a crushing cutter. When rotating together with the crushing cutter, the hook plays the role of pulling down the plastic bottle. At this time, the hook 321 is preferably formed in a round shape that bends downward, and becomes increasingly thinner and sharper toward the outer end.

At this time, the hook rotating plate 32 is formed larger than the first cutting cutter 311 by the length of the hook 321 so that the hook portion is exposed outside the crushing cutter to pull down the plastic bottle flowing into the crushing cutter.

For example, when the size of the first and second cutting cutters 311 and 312 forming the crushing cutter is 120 to 125 Ø, the size of the hook rotating plate 32 is preferably formed to be 155 to 160 Ø.

The hook rotating plate 32 is installed at a predetermined interval between the disks of the first cutting cutter 311 among the crushing cutters, and is installed at that position in place of the disk forming the first cutting cutter. There is no effect on the rotational drive of the first and second cutting cutters 311 and 312.

The rotating wing 33 is installed on the upper part of the crushing cutter to push the plastic bottle toward the crushing cutter and perforate the plastic bottle.

The rotating wing 33 consists of a plurality of plate-shaped wings and is installed on the shaft 332 mounted on the left and right walls of the hopper, rotating in conjunction with the crushing cutter to crush the plastic bottle (P) flowing into the hopper 21. It serves to guide the cutter (31). At this time, the axis 332 of the rotating wing is fixed to the flange portion 24 installed on the outer surface of the hopper 21.

The rotating wing 33 is installed eccentrically on the rear wall of the hopper 21 and pushes the plastic bottle toward the crushing cutter 31 through a space spaced apart from the front wall. At this time, the rotating wing 33 is Of course, it rotates in the same direction as the first cutting cutter 311 and in the opposite direction to the second cutting cutter 312.

In addition, the rotating wing 33 is provided with a sharply formed punching edge 331 along the tip of each wing, so that when the plastic bottle is supplied to the crushing cutter 31 in an uncompressed state, the punching edge 331 breaks the plastic bottle. By piercing and expelling the internal air, the crushing cutter 31 helps to easily compress the plastic bottle and crush it to a predetermined size.

The guide rib 34 is installed between the lower part of the hopper and the upper part of the cutter box, that is, between the rotating wing and the crushing cutter, and guides the plastic bottle supplied from the hopper toward the crushing cutter.

This is because the first and second cutting cutters (311, 312) forming the crushing cutter (31) are configured to have different sizes, so there is a gap space at the inlet of the plastic bottle, that is, the area where the first and second cutting cutters come into contact with each other and crushing begins. This is to prevent the crushing efficiency from being reduced by blocking it with the guide rib 34 to prevent this from occurring.

The upper end of the guide rib 34 is attached to the inner lower wall of the hopper 21, and the lower end extends inclined at a predetermined angle toward the upper side of the area where the first and second cutting cutters 311 and 312 contact each other. Accordingly, the hopper ( The plastic bottle supplied from 21) is naturally guided toward the crushing cutter (31) along the lower part of the guide rib (34).

The drive unit 40 is disposed on the left and right sides of the housing to provide driving force to rotate the crusher, and includes a drive motor 41, shafts 421 and 422, and power transmission means.

The drive motor 41 is disposed on the left and right sides (right side in the drawing) of the upper space 10A of the housing to rotate and drive the pair of crushing cutters 311 and 312 in directions facing each other.

The shafts 421 and 422 are arranged so that the first and second cutting cutters 311 and 312 of the crushing cutter are mounted so that the driving shaft 421 and the interlocking shaft 422 are rotatably parallel to each other inside the cutter box 35. do.

A driving gear 431 and an interlocking gear 432 are mounted on one side of the driving and interlocking shafts 421 and 422, respectively. The driving and interlocking gears 431 and 432 are installed on the outer surface 354 of the cutter box and are engaged with each other. It is rotated. At this time, the driving and interlocking gears 431 and 432 may be formed to have different sizes, similar to the first and second cutting cutters 311 and 312.

At this time, the drive motor 41 is connected to the shaft through a power transmission means and transmits rotational power to the crushing cutter 31.

The power transmission means includes a drive sprocket 441 connected to the drive shaft 421 via a drive gear 431, an interlocking sprocket 443 fixed to the shaft 332 of the rotary wing and rotated in conjunction with them. It includes a chain 444 that connects the shaft 411 of the drive motor and the drive sprocket 441 and a chain coupling 445 that transmits rotational power to the drive sprocket.

That is, when the power of the drive motor 41 is transmitted to the drive sprocket 441 connected to the chain coupling 411 to rotate the drive gear 431 and the drive shaft 42, the interlocking gear 432 engaged with the drive gear While rotating the interlocking shaft 422, crushing occurs as the first and second cutting cutters 311 and 312 rotate in a state of engagement with each other, and at the same time, a rotational force is applied to the interlocking sprocket 443 connected to the drive sprocket and the chain 444. This is transmitted and the rotating wing 33 rotates to push the plastic bottle toward the crushing cutter 31.

In this way, when the plastic bottle (P) is put into the hopper 21, the driving unit 40 is driven by a sensor unit to be described later, and the entire compression crushing unit is rotated and driven by the gears 431, 432, 441, 443 and chains 444, 445, causing compression and crushing. Shredding takes place.

Additionally, the crushing device according to the present invention further includes a debris removal unit.

As shown in Figure 3, the debris removal unit 50 is installed inward on the front and rear walls of the cutter box close to the crushing cutter to prevent shredded plastic bottles shredded by the crushing cutter from getting caught.

The debris removal unit 50 has a blade shape of a predetermined length and is formed to protrude at predetermined intervals along the front and rear walls 351 and 352 of the cutter box 310 to face the rotation direction of the crushing cutter 31. It is arranged in parallel between the disks of the cutters 311 and 312.

Accordingly, the shredding cutter 31 is rotated and driven to crush and crush the plastic bottle, and the fragment removal unit 50 pushes the shredded material caught between the disks of the first and second cutting cutters 311 and 312 into the first and second cutting cutters 311 and 312. It serves to gather the cutting cutter side.

In the drawing, the debris removal portion 50 is formed only on the lower side of the wall surfaces 351 and 352 of the cutter box, but it may also be formed on the upper side.

In addition, the crushing device according to the present invention further includes a chute portion.

As shown in Figures 1 and 5, the chute part 60 is installed at the discharge port of the housing to control the falling position of the shredded plastic bottle material generated by the shredding cutter, and includes a motor shaft 61 and a geared motor 62. ), an impeller 63, and a chute sensor 64.

The motor shaft 61 is installed on the mounting panel 18 forming the bottom surface of the upper space 10A of the housing, and the geared motor 62 is connected to the motor shaft and provides driving force to the motor shaft.

The impeller 63 is coupled to the motor shaft and rotates to push the shredded material discharged from the shredding cutter 31, moving the shredded material to the center so that the discharge point of the shredded material is not biased. As a result, the shredded material is evenly loaded without being biased in the collection box. comes true.

The chute sensor 64 is installed by a sensor bracket 641 at the bottom of the upper space floor 18 of the housing to detect the amount and height of shredded material loaded in the collection box.

In addition, the shredding device according to the present invention further includes a sensor unit 70 that detects the input of a plastic bottle, and a control unit 80 that controls the operation of the drive unit with a signal from the sensor unit.

The sensor unit 70 is installed adjacent to the inlet of the housing to detect whether a plastic bottle is inserted, and an optical sensor may be used.

The control unit 80 is installed in the housing and drives the driving unit by signals from the sensor unit, and this control unit is composed of a control box.

In addition, although not shown in the drawing, a touch panel unit may be provided on the front of the housing 10 to count the amount of plastic bottles to be disposed of by entering an authentication number for each user, such as the user's mobile phone number or card number.

A shredding device with this configuration can be installed and used in places where large amounts of waste plastic are discharged, such as apartments, schools, and hospitals, or in places where waste plastic bottles are professionally disposed of.

The unexplained symbol 18 is a mounting panel, 36 is a cutter box support, and 111 and 112 are door handles.

10: Housing 10A: Upper space
10B: lower space 20: supply unit
21: Hopper 30: Compression crushing unit
31: crushing cutter 311: first cutting cutter
312: second cutting cutter 32: hook rotating plate
33: rotation wing 34: guide rib
35: cutter box 40: driving unit
41: drive motor 421: drive shaft
422: Interlocking shaft 431: Drive gear
432: Link gear 441: Drive sprocket
443: Interlocking sprocket 50: Debris removal unit
60: Chute part 63: Impeller
70: sensor unit 80: control unit

Claims (14)

In the shredding device for shredding plastic bottles, including PET bottles,
A housing (10) having a receiving space therein;
A supply unit (20) installed on the upper side of the housing to supply a plastic bottle (P);
A compression crushing unit (30) connected to the lower part of the supply unit and configured to simultaneously press and crush the plastic bottle by pushing it while drilling a hole in the plastic bottle; and
It includes a driving unit 40 that provides a rotational driving force to the compression crushing unit,
A collection box is provided on the lower side of the housing 10, and a chute unit 60 is installed at the upper side discharge port of the housing 10 to adjust the falling position of the shredded plastic bottle material generated by the shredding cutter in the collection box. Includes,
The chute part 60 is,
A motor shaft 61 installed on the lower side of the housing;
A geared motor 62 connected to the motor shaft and providing driving force to the motor shaft;
An impeller (63) installed on the motor shaft to rotate and push the crushed material discharged from the crushing cutter; and
A chute sensor 64 installed on the lower side of the housing to detect the amount and height of shredded material loaded in the collection box. A plastic bottle shredding device comprising a. The method of claim 1, wherein the compression crushing unit 30 is,
A crushing cutter (31), which is a pair of gear-type cutters that intersect and engage with each other, and consists of first and second cutting cutters (311, 312) in which a plurality of disks with rotating blades formed along the edge are arranged in a line; and
A plastic bottle crushing device comprising a plurality of hook rotating plates (32) installed between a plurality of disks forming the crushing cutter to pull down the plastic bottle into the crushing cutter (31). The method of claim 2, wherein the compression crushing unit 30 is,
The hook rotating plate 32 is installed between the disks of the first cutting cutter 311 or the second cutting cutter 312 forming the crushing cutter, and a round hook 321 curved downward along the edge is formed. A plastic bottle crushing device, characterized in that. The method of claim 3, wherein the compression crushing unit 30 is,
A plastic bottle crushing device further comprising a rotating wing (33) installed on the crushing cutter (31) to push the plastic bottle toward the crushing cutter (31) and puncture the plastic bottle. The method of claim 4, wherein the compression crushing unit 30 is,
A plastic bottle crushing device, characterized in that a sharply formed punching edge (331) is provided along the tip of each wing forming the rotating wing (33) to punch the plastic bottle supplied to the crushing cutter (31). The method of claim 5, wherein the compression crushing unit 30 is,
A guide rib (34) installed between the rotating wing (33) and the crushing cutter (31) to guide the plastic bottle supplied from the hopper (21) toward the crushing cutter. The method of claim 6, wherein the compression crushing unit 30 is,
The guide rib (34) is a plastic bottle crushing device, characterized in that the upper end is attached to the inner lower wall of the hopper (21) and the lower end extends inclined at a predetermined angle toward the upper side of the crushing cutter (31). According to paragraph 1,
A plastic bottle crushing device further comprising a debris removal unit (50) in the compression crushing unit (30) that pushes and removes debris to prevent it from being caught in the crushing cutter (31). According to clause 8,
The debris removal unit 50 is a plastic bottle crushing device, characterized in that it is blade-shaped and protrudes between the original plates of the first and second cutting cutters 311 and 312 forming the crushing cutter 31. delete delete According to any one of claims 2 to 9,
The crushing cutter (31) is a plastic bottle crushing device characterized in that the inner bent portion (31a) of the cutting blade is cut at an angle of 17 to 18°. According to any one of claims 2 to 9,
The crushing cutter (31) is a plastic bottle crushing device characterized in that the outer bent portion (31b) of the cutting blade is formed at a double incline and is cut at 21 to 23 ° and 23 to 25 °, respectively. According to paragraph 1,
A plastic bottle shredding device further comprising a touch panel unit that inputs an authentication number for each user on the front of the housing (10) and counts the amount of plastic bottles to be discarded.

Images