KR102533191B1 - Crusher and washing system for a used plastic - Google Patents

Abstract

The present invention includes a crushing unit in which waste plastic is introduced and crushed; a washing unit receiving the shredded waste plastic from the crushing unit at one end and transporting the shredded waste plastic to the other end by means of a screw, and equipped with a washing nozzle to wash the transported shredded waste plastic; A reaction unit in which waste plastic is introduced through the cleaning unit, an ultrasonic irradiation unit is configured at the front end, one or more stirring blades are configured on the surface where the water level is formed, and a discharge blade is configured at the rear end to discharge the waste plastic to the outside. It relates to a waste plastic shredding and washing system, characterized in that it comprises.

Description

Waste plastic crushing and washing system {CRUSHER AND WASHING SYSTEM FOR A USED PLASTIC}

The present invention relates to a system for crushing and washing collected waste plastics so that they can be discharged.

Conventionally, collecting recyclable waste involves simply putting the recyclable waste into a recycling trash bin by a user, and cleaning up the recyclable waste put into the trash bin by an environmental sanitation worker.

More specifically, when recycling waste, such as plastic, is generally put into a dedicated collection box installed at a designated location, a collection company collects the recycled waste, such as plastic, contained in the exclusive collection box on a designated date.

However, since the volume of the collected waste plastic is large, a lot of space and cost are required for collection and transportation, resulting in inefficiency.

As an example of the prior art, Korean Patent Publication No. 10-2021-0035372 discloses a collection box for compressing and storing plastic waste input through an inlet; A weighing unit for measuring the weight of plastic waste; and a server that receives the user ID and discharged weight information from the collection box and the weighing unit and generates payout information including the user ID according to predetermined payout data. .

However, the above technology relates to overall management and does not specifically suggest a structure for pulverizing and washing collected waste plastics and discharging them in a state suitable for recycling.

Republic of Korea Patent Publication No. 10-2021-0035372

Accordingly, an object of the present invention is to provide a waste plastic crushing and washing system capable of discharging collected waste plastic in a state suitable for recycling by crushing and washing the collected waste plastic.

The waste plastic crushing and cleaning system according to the present invention (hereinafter referred to as “the system of the present invention”) includes a crushing unit in which waste plastic is introduced and crushed; a washing unit receiving the shredded waste plastic from the crushing unit at one end and transporting the shredded waste plastic to the other end by means of a screw, and equipped with a washing nozzle to wash the transported shredded waste plastic; A reaction unit in which waste plastic is introduced through the cleaning unit, an ultrasonic irradiation unit is configured at the front end, one or more stirring blades are configured on the surface where the water level is formed, and a discharge blade is configured at the rear end to discharge the waste plastic to the outside. It is characterized by including.

As an example, the reaction unit includes a reaction tank, an ultrasonic irradiation unit configured in front of the reaction tank, and a rear end of the ultrasonic irradiation unit configured to be orthogonal to the direction in which waste plastic flows, and to form an air curtain by controlling the aeration strength at the same time as aeration Characterized in that it includes one or more diffusers.

As an example, a first stirring blade composed of a rotating shaft and a stirring bar protruding in plurality from the rotating shaft is formed at the front end of the reaction vessel, and a rotating shaft and a plurality of floating holes protruding from the rotating shaft are formed at the rear end of the first stirring blade. It is characterized in that the second stirring blade composed of a flow forming end is configured.

As an example, the discharge blade is characterized in that it is composed of a rotary drum and a perforated plate protruding from the rotary drum in plurality and having a bent shape.

For example, the crushing unit includes a storage tank in which waste plastic is stored and which can be opened and closed by a cover, and a crushing tank disposed in a communication structure with the storage tank and discharging the waste plastic stored in the storage tank to the washing unit by pulverizing the waste plastic. And, on the lower surface of the cover, an extension part fixed to the cover and having a plurality of joints and a pressurizing part coupled to the end of each extension part and including a plate-shaped pressing part are further configured, and the cover has a rotating part interlocking with the driving means. Is configured, characterized in that it further includes a connection line that connects the rotating sphere and the pressing unit and enables the upper and lower interlocking of the pressing unit by the rotation of the rotating sphere.

The system of the present invention has the advantage of enabling simultaneous crushing and washing of waste plastics.

In addition, the system of the present invention has the advantage of increasing the removal efficiency of contaminants deposited on the waste plastic in washing the waste plastic.

1 is a schematic diagram showing the system of the present invention;
2a and 2b are partial views showing the operating state of the present invention,
3 is a view showing a first stirring blade,
4 is a view showing a second stirring blade,
5 is a view showing a discharge wing,
6 is a schematic diagram showing an embodiment of a grinding unit as one configuration of the present invention;
7A and 7B are operational state diagrams of the embodiment shown in FIG. 6 .

In describing the present invention, the terms or words used in this specification and claims are based on the principle that the inventor can appropriately define the concept of the term in order to best describe his or her invention. should be interpreted as a meaning and concept that corresponds to the technical idea of

As shown in FIG. 1, the system 1 of the present invention includes a crushing unit 2 in which waste plastic is introduced and crushed; a washing unit 4 receiving the shredded waste plastic from the shredding unit 2 at one end and transporting the shredded waste plastic to the other end by means of a screw 41, and equipped with a washing nozzle 42 to wash the transported shredded waste plastic; Waste plastic is introduced through the washing unit 4, an ultrasonic irradiation unit 32 is configured at the front end, one or more stirring blades 34 are configured on the surface where the water level is formed, and the waste plastic is discharged to the outside at the rear end. It is characterized in that it comprises a; reaction part (3) in which the discharge wing (35) is configured.

In addition, as shown in the drawing, a conveying unit 5 by means of a screw may be further configured at the rear end of the reaction unit 3.

The waste plastic introduced into the crushing unit 2 is discharged to the washing unit 4 in a state in which it is crushed by a known crushing means.

As shown in the figure, the washing part 4 forms an inclined gradient, and a screw 41 and a washing nozzle 42 are configured inside, so that the waste plastic introduced into one end goes upward along the screw 41, , In the upward process, the primary washing is performed by spraying the washing water by the washing nozzle 42.

Of course, the drawing number is not shown, but the screw 41 is rotated by a driving means so that it is made.

In the reaction unit 3, the second cleaning is performed on the waste plastic that has been primarily cleaned while passing through the cleaning unit 4, and the second cleaning is carried out by water as well as ultrasonic and ultrasonic waves. It is to decompose pollutants such as organic matter deposited in waste plastic by aeration.

The reaction part 3 is orthogonal to the direction in which the waste plastic flows in the reaction tank 31 in which washing water is stored, the ultrasonic irradiation part 32 configured at the front end of the reaction tank 31, and the ultrasonic irradiation part 32 at the rear end. It is configured and characterized in that it includes one or more diffusers (33) to form an air curtain by controlling the intensity of aeration at the same time as aeration.

The reaction unit 3 includes a front end portion composed of a first agitation blade 341 described below, an ultrasonic irradiation unit 32, and a diffusion tube 33, a second agitation blade 342 described below, and a discharging unit. It may be composed of the rear end where the wing 35 is composed.

At the front end of the reaction unit 3, pollutants are decomposed mainly by ultrasonic waves and aeration, and at the rear end, waste plastic purified at the front end is induced and discharged to the outside. Of course, the decomposition action can be continuously performed even at the rear end by the dispersed aeration.

The ultrasonic irradiation unit 32 irradiates the waste plastic with ultrasonic waves to separate and decompose contaminants from the waste plastic. This operating mechanism by ultrasonic waves is a well-known operating mechanism, and its detailed description is omitted.

In particular, as shown in FIGS. 2A and 2B, the diffuser 33 is configured to be orthogonal to the flow direction of the waste plastic at the rear end of the ultrasonic irradiation unit 32, and aeration is performed by the diffuser 33, It is to separate and decompose pollutants from waste plastic, and to form an air curtain by controlling the intensity of aeration, so that the reaction rate by ultrasonic waves can be controlled.

That is, FIG. 2A shows a state in which aeration (a1) is performed by the diffuser pipe 33, but the flow of the waste plastic P is allowed to the rear end of the diffuser pipe 33 because the degree of aeration is small.

FIG. 2B shows a state in which the flow of waste plastic P is not allowed to the rear end of the diffuser pipe 33 by forming an air curtain partitioning the reaction tank 31 because the aeration a2 by the diffuser pipe 33 is large. It is becoming.

In the case of operation as shown in FIG. 2B, the efficiency of separation and decomposition of contaminants by ultrasonic waves is increased by making the waste plastic P be irradiated with ultrasonic waves for a long time. In this way, by adjusting the degree of aeration by the diffuser 33, the reaction time by ultrasonic waves is controlled.

In addition, although not shown in the drawing, the air discharge direction by the plurality of diffuser tubes 33 is formed radially, so that the air discharge direction by the diffuser tube 33 on the outside is discharged to the front and rear ends of the reaction tank 31, respectively. The aeration tube 33 located in the center allows air to be discharged in a direction orthogonal to the surface of the water surface, so that an air curtain can be formed.

That is, the response time by ultrasonic waves can be controlled by adjusting the degree of aeration by the diffuser pipe 33, and the reaction time by ultrasonic waves can be controlled by operating the diffuser pipe 33 at a specific position, and at the same time partially or entirely It can make aerobic action happen.

As shown in FIG. 3, the first agitation blades 341 are formed at the front end of the reaction tank 31, and a rotation shaft 341-1 and a plurality of agitation rods 341-2 protrude from the rotation shaft 341-1. ) is composed of

The rotating shaft 341-1 is not shown in the drawing, but allows a rotational force to be applied by a driving means.

The first agitating blade 341 is for agitating the waste plastic at the upper part of the ultrasonic irradiation part 32, and the agitation bar 341-2 strikes the waste plastic so that contaminants are separated from the waste plastic. The agitation of the first stirring blades 341 further enhances the decomposition efficiency of contaminants by ultrasonic waves and aeration.

By the above operating mechanism, the waste plastic that has passed through the front end of the reaction tank 31 can be in a sufficiently purified state. It is to guide the waste plastic to the discharge wing 35 at the rear end.

The second stirring blade 342 is composed of a rotating shaft 342-1 and a flow forming stage 342-2 protruding from the rotating shaft 342-1 in plurality and forming a plurality of flow holes 342-21. characterized by

In the case of the rotating shaft 342-1, although not shown in the drawings, rotational force is applied by a driving means.

As shown in the drawing, the flow forming end 342-2 protrudes from the rotary shaft 342-1 in a shape bent in a “c” shape. This is to increase the bearing capacity when a pushing force is applied in the direction of the discharge blades 35.

In addition, the reason why the plurality of fluid holes 342-21 are formed is to let water flow through the fluid holes 342-21 and guide only the waste plastic toward the discharge blades 35.

In this way, the second stirring blades 342 correspond to a configuration that guides the purified waste plastic toward the discharge blades 35.

The waste plastic derived from the reaction tank 31 is discharged to the outside through the discharge blades 35.

The discharge blade 35 is characterized in that it consists of a rotary drum 351 and a plurality of perforated plates 352 protruding from the rotary drum 351 and having a bent shape.

In the case of the rotating drum 351, although not shown in the drawing, rotational force is applied by a driving means.

As shown in the drawing, the perforated plate 352 is configured in a shape bent in the direction of rotation to facilitate collection of waste plastic during rotation, and to discharge only waste plastic to the outside by forming perforations.

In the present invention, an embodiment of the crushing unit 2 is presented in FIG. 6 .

The crushing unit 2 of this embodiment has a storage tank 21 in which waste plastic is stored and can be opened and closed by a cover 211, and is disposed at the bottom in a communication structure with the storage tank 21 to store in the storage tank 21 It consists of a crushing tank 22 that crushes the waste plastic to be discharged to the washing unit 4. In addition, a hopper 23 communicating with the storage tank 21 is configured at the upper end of the storage tank 21 .

The storage tank 21 can be opened and closed by the cover 211, and the cover 211 and the grinding blade 222 described below are interlocked so that when the cover 211 covers the storage tank 21 It is preferable to prevent safety accidents by allowing the grinding blade 222 to operate only. Interlocking of the cover 211 and the crushing blade 222 is applicable to various known technologies, so a detailed description thereof will be omitted.

The crushing tank 22 is arranged at the lower part in communication with the storage tank 21 to crush the waste plastic stored in the storage tank 21, and the upper and lower surfaces of the crushing tank 22 are open, The body 221 configured to pass the waste plastic of the storage tank 21 from the upper side to the lower side, the crushing blade 222 configured in the body 221, and the waste plastic input into the storage tank 21 and falling It is characterized in that it is configured to include a pair of guide plates 223 guiding toward the crushing blade 222 side.

The grinding blades 222 are composed of a pair, a rotating shaft 222-3, a rotating body 222-1 interlocking with the rotating shaft 222-3, and a plurality of blades protruding from the rotating body 222-1. It is composed of rotary blades 222-2. Although not shown in the drawing, the grinding blades 222 are driven by a driving means, and each grinding blade 222 pulverizes waste plastic while rotating in the opposite direction and discharges it in a downward direction.

For this purpose, it is preferable that the rotating blades 222-2 formed on each rotating body 222-1 overlap each other.

The guide plates 223 are provided in pairs and are configured to guide the waste plastic falling from the storage tank 21 toward the crushing blade 222 .

On the other hand, when the waste plastic is pulverized by the grinding blade 222, as mentioned above, the storage tank 21 is closed by the cover 211, but the grinding blade 222 does not mesh well with the waste plastic, so the grinding blade 222 There may be cases where this becomes idling.

Therefore, in the present invention, as shown in FIG. 6, etc., the lower surface of the cover 211 is fixed to the cover 211, and the extension part 212-2 having a plurality of joints and the end of each extension part 212-2 An example in which the pressing member 212 including the plate-shaped pressing portion 212-1 is further configured is provided.

As shown in the drawing, the extension part 212-2 corresponds to a configuration in which a plurality of joints are included so that the pressing part 212-1 ascends and descends by folding and unfolding of the joints.

The pressure port 212 is plate-shaped, and the material is applied with a material having a relatively high specific gravity such as iron, and pressurizing the waste plastic from the top of the crushing blade 222 by its own weight, so that the waste plastic is easily engaged with the crushing blade 222 and pulverized. is to increase efficiency.

To this end, the cover 211 is configured with a rotary sphere 211-1 that interlocks with the driving means, and connects the rotary sphere 211-1 and the pressing part 212-1, and the rotary sphere 211-1 1) to further include a connecting line 211-2 enabling the upper and lower interlocking of the pressing part 212-1 by rotation.

The rotating sphere 211-1 raises the pressing part 212-1 while the connecting line 211-2 is wound, and the pressing part 212-1 rises as the connecting line 211-2 is released. will descend. Although not shown in the figure, the rotary sphere 211-1 rotates in conjunction with a driving means.

The lowering of the pressing part 212-1 while the connecting line 211-2 is released from the rotating part 211-1 depends on the weight of the pressing part 212-1, and the rotating part 211-2 In 1), the pressing part 212-1 rises while the connecting line 211-2 is wound, which is operated by the rotation of the rotating sphere 211-1 by the driving means.

When the connecting line 211-2 is released and the pressing part 212-1 descends, the position where the pressing part 212-1 is close to the upper end of the grinding blade 222 is set as a critical length to control further descent It is possible to determine whether or not to release the grinding blade 222 by detecting the loosening of the connection line 211-2. For example, when the connection line 211-2 is released to a critical length, the operation of the grinding blade 222 is automatically released after a certain period of time.

7A shows that when the grinding blade 222 is not operated, the joints of the extension part 212-2 are folded so that the pressing part 212-1 is maintained in an elevated state. In this case, the rotation of the rotating sphere 211-1 is locked, and the state in which the pressing part 212-1 is raised is maintained.

When the crushing blade 222 operates, as shown in FIG. 7B, the locking of the rotating sphere 211-1 is released, and the pressurizing part 212-1 pressurizes the waste plastic while descending by its own weight, thereby reducing the amount of waste plastic. to increase the crushing efficiency. Here, it is reasonable to configure the weight 212-3 to double the pressing force of the pressing unit 212-1.

Through the above description, those skilled in the art will know that various changes and modifications are possible without departing from the technical idea of the present invention. Therefore, the technical scope of the present invention is not limited to the contents described in the detailed description of the specification, but should be defined by the claims.

1: system of the present invention 2: grinding unit
3: reaction part 4: washing part
5: transfer part

Claims (5)

A crushing unit in which waste plastic is introduced and crushed;
a washing unit receiving the shredded waste plastic from the crushing unit at one end and transporting the shredded waste plastic to the other end by means of a screw, and equipped with a washing nozzle to wash the transported shredded waste plastic; and
A reaction unit in which waste plastic is introduced through the cleaning unit, an ultrasonic irradiation unit is configured at the front end, one or more stirring blades are configured on the surface where the water level is formed, and a discharge blade is configured at the rear end to discharge the waste plastic to the outside. include,
The crushing part,
It consists of a storage tank in which waste plastic is stored and which can be opened and closed by a cover, and a crushing tank disposed below the storage tank in communication with the storage tank to pulverize the waste plastic stored in the storage tank and discharge it to the washing unit,
On the lower surface of the cover, an extension portion fixed to the cover and having a plurality of joints and a pressurizing member coupled to the end of each extension portion and including a plate-shaped pressing portion are further configured, and the cover has a rotation member interlocking with the driving means. and a connecting line connecting the rotating sphere and the pressurizing unit and enabling the upper and lower interlocking of the pressing unit by the rotation of the rotating sphere.
According to claim 1,
The reaction part,
A reaction tank, an ultrasonic irradiation unit configured in front of the reaction tank, and one or more air curtains formed at the rear end of the ultrasonic irradiation unit so as to be orthogonal to the direction in which the waste plastic flows and controlling the aeration strength at the same time as aeration to form an air curtain. Waste plastic shredding and washing system, characterized in that.
According to claim 2,
A first stirring blade composed of a rotating shaft and a plurality of stirring rods protruding from the rotating shaft is formed at the front end of the reaction tank,
Waste plastic crushing and washing system, characterized in that the rear end of the first stirring blade is composed of a rotating shaft and a second stirring blade consisting of a flow forming end in which a plurality of protrusions from the rotating shaft and a plurality of flow holes are formed.
According to claim 1,
The waste plastic crushing and washing system, characterized in that the discharge blade is composed of a rotary drum and a plurality of perforated plates protruding from the rotary drum and having a bent shape. delete

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