KR20030034815A - A dehydrator for recycling plastic waste - Google Patents

Abstract

PURPOSE: Provided is a dehydrator for recycling waste plastics which is based on centrifugal force to enable dehydration to be continued and gravity to separate extraneous matters so that it helps to recycle wastes effectively. CONSTITUTION: The dehydrator for recycling the waste plastics comprises the parts of: a dehydration box(30) which has plural dehydration holes(34) at lateral side; a housing(20) which houses the dehydration box; a supply pipe for the waste plastics(60) which supplies the waste plastics to the dehydration box; a central passage pipe(61) which forms an entrance under the dehydration box to absorb the dehydrated waste plastics; a release pipe(62) which is connected to the central passage pipe to release the dehydrate waste plastics; and a suction fan(63) which absorbs the waste plastics to dehydrate and release the waste plastics consecutively.

Description

Dehydrator for recycling plastic waste

The present invention relates to a dehydrator for recycling waste plastics, preferably waste styrofoam. Specifically, the crushed and washed waste styrofoam is continuously dehydrated using centrifugal force and at the same time using wood, iron ball, boulder, winter It relates to a device for separating foreign matter such as ice.

In general, styrofoam is called expanded styrene (EPS), styrofoam (Styrofoam), and is a foamed product in which hydrocarbon gas such as pentane or butane is injected into the polystyrene resin and then inflated with steam, and 98% of the volume is air. The remaining 2% is synthetic resin material. Styrofoam is mainly used for packaging materials of household appliances, agricultural and marine products, aquaculture rich people, and house insulation materials. However, these styrofoam products are disposed of in a short-term or one-time use. Because the quantity and volume of the product is huge, it takes tremendous manpower and expense to collect it and transport it to the garbage dump, and sometimes it is accumulated in the natural environment. Because of its permanently non-corrosive nature, it is the target of environmental pollution, which encroaches the surrounding environment and the natural environment. Thus, in recent years, in order to reduce the environmental pollution, to try to recycle the waste styrofoam, there is a lot of research and active research.

Conventionally, Korean Patent No. 2000-63380 discloses that the crushed pieces are washed in a perforated dewatering container as shown in FIG. , The dehydrated crushed pieces are allowed to pass through the perforated dehydration container quickly by the suction force of the blowing force supplied through the blower pipe, and the crushed pieces passed through the dewatering can be blown and transferred to a predetermined storage container by a separate blower. Although there is a dehydrator, but unnecessary blowers such as a blower for supplying the crushed pieces 34, the blower 13, the blower 20 is installed, the production cost is high, the separation of the crushed pieces and foreign matter is not good There was this. In addition, the crushed piece supply pipe 34 is extended to the center of the blower tube 10, there is a problem that the waste of energy is large because the initial flow resistance in the rotation along the feed screw is large.

An object of the present invention is to solve the above problems, as a dehydrator for recycling waste plastics, preferably waste styrofoam, it is possible to dehydrate continuously using centrifugal force and at the same time efficient separation of foreign matter using gravity It is to provide a dehydrator having a simple configuration.

It is also an object of the present invention to provide a dehydrator in which foreign matters separated from waste styrofoam are discharged efficiently without backflow.

It is also an object of the present invention to provide a dehydrator that facilitates the removal of foreign substances and the maintenance of the dehydrator.

It is also an object of the present invention to provide a simple and efficient device for preventing clogging of the dehydration hole of the dehydration bottle.

1 is a cross-sectional view of a crushed dehydrator of a washed synthetic resin bottle used in the prior art.

Figure 2 is a longitudinal sectional view of the dehydrator for recycling waste plastics according to the present invention.

3 is a plan view of a dehydrator for recycling waste plastics according to the present invention.

Figure 4 is a longitudinal sectional view of the dehydrator for recycling waste plastics according to another embodiment of the present invention.

5 is a partially broken perspective view to illustrate a rotary pump according to the present invention.

6 is a perspective view of a part for preventing the blockage of the dehydration hole in FIGS.

* Explanation of symbols used in drawings

10 ... dehydrator, 20 ... housing, 24 ... stand,

25 ... cylindrical housing, 26 ... cone housing, 30 ... dehydrator,

34.dewatering, 40 rotary pump, 41 rotating blade,

42 rotating shaft, 43 case, 44 entrance,

45 exit, 50 brush, 51 brush holder,

52 ... rod, 53 ... rotary shaft, 54 ... motor,

60 supply pipe, 61 central passage pipe, 62 discharge pipe,

63.Suction fan.

Dehydrator for recycling waste plastics of the present invention for solving the above problems is a cylindrical dehydration passage having a plurality of dehydration holes on the side; A housing incorporating the dewatering container; A waste plastic supply pipe which is eccentrically positioned between the dehydration container and the central passage pipe at an upper side of the dewatering container, and supplies the waste plastic to the inside of the dewatering container; A central passage pipe positioned at an inner center of the dehydration container and having an inlet formed at a lower surface thereof to suck dehydrated waste plastics; A discharge pipe connected to an upper side of the central passage pipe to discharge dehydrated waste plastic; It consists of a suction fan installed in the discharge pipe to suck the waste plastic to continuously centrifugal dehydration and discharge. In addition, the dehydrator for recycling the waste plastic of the present invention for solving the above problems is provided with a rotary pump to discharge the foreign matter, the lower part of the dehydration container and housing so that easy access for cleaning or maintenance of the dehydration container inside Is detachable and a rotating brush is provided to prevent clogging of the dehydration hole of the dehydration pail.

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the dehydrator for recycling waste plastics according to a preferred embodiment of the present invention.

As shown in FIG. 2, the dehydrator 10 is largely composed of a housing 20, a dehydration tube 30, a supply pipe 60, a central passage tube 61, a discharge tube 62, a suction fan 63, and a rotary pump ( 40). The upper portion of the housing 20 is preferably a cylindrical housing 25 and the lower portion is a conical housing 26, the housing 20 contains the dehydration container 30, and the upper surface of the housing 20 is a cylindrical housing. Bolted to the flange formed on the side of (25). Since the lower part of the housing 20 faces downward, the cross-sectional area becomes narrow, and the foreign material separated from the waste styrofoam is easily collected. In addition, the cone-shaped housing 26 is bolted to the flange formed in the lower portion of the cylindrical housing 25, the cone-shaped housing 26 can be easily separated to remove the foreign matter inside the housing 20 or maintenance. In addition, a rotary pump 40 is installed at the end of the cone-shaped housing 26 to prevent foreign air from the housing 20 from entering the housing 20, and foreign matters inside the housing 20 are transferred to the housing 20. Allow to be discharged to the outside. The pedestal 24 of the housing is fixed to the side of the housing 20 to support the dehydrator 10 according to the invention on the ground.

The dehydration container 30 has a plurality of dehydration holes 34 formed in the cylindrical side, the waste styrofoam sucked from the supply pipe 60 by the suction fan 63 is continuously dehydrated by centrifugal force and separated from the waste styrofoam The moisture is moved downward along the housing 20 through the dehydration hole (34). A flange is formed at an upper end of the dehydration container 30, and is bolted to an upper surface of the housing 20. The lower surface of the dehydration container 30 is preferably bolted to a flange formed at the lower end of the dehydration container 30 without the dehydration hole 34 formed thereon, and is detachable from the side surface of the dehydration container 30. Facilitate internal access of (30) to simplify foreign material removal and maintenance.

As shown in Figures 2 and 3, the supply pipe 60 is located on the upper side of the cylindrical housing 25 is connected to the interior of the dehydration container (30). The supply pipe 60 is located eccentrically between the dehydration tube 30 and the central passage pipe 61, the supplied styrofoam is the central passage pipe centered around the central passage pipe 61 in the dehydration tube 30 It spins along the outside of 61 and is efficiently dehydrated by centrifugal force.

The central passage pipe 61 is located in the center of the dehydration tube 30, the inlet is formed on the lower surface, the dehydrated light styrofoam is selectively sucked through the lower portion of the central passage tube 61 and has a high specific gravity Foreign substances and the like is located in the lower portion of the dehydration container (30).

The discharge pipe 62 is connected to the upper side of the central passage pipe 61 to form a passage for discharging the inhaled waste styrene product in the following process. The suction fan 63 is installed in the discharge pipe 62 to suck the waste styro product from the supply pipe 60, dewater by the centrifugal force inside the dehydration tank 30, the central passage pipe 61 and the discharge pipe ( Generate the suction force discharged through 62).

As shown in Figures 2 and 5, the rotary pump 40 is a case 43 installed in the lower portion of the cone-shaped housing 26, the rotating shaft 42 and the rotating blade 41 installed inside the case 43 Is done. The case 43 is detachably installed in the cone-shaped housing 26, and foreign matter that is lowered by gravity is collected through the inlet 44 and is discharged through the outlet 45. The rotating shaft 42 is rotated by a motor (not shown), the rotating blade 41 is formed along the rotating shaft 42 and the inner space of the case 43, preferably divided into six equal parts, the outside of the housing 20 The foreign matter collected between the rotary blades 41 while airtight not to enter the housing 20 is rotated about the rotating shaft 42 to discharge to the outside through the outlet (45).

2 and 6, when the dehydration hole 34 is blocked by foreign matter or waste styrofoam, a brush 50 may be installed to drop it. The brush 50 extends in the up and down direction at the side of the dehydration container and engages with the dehydration hole 34. The brushes 50 are mounted to the brush holders 51, and four are preferably provided outside the dehydration tank 30. The rotational force of the motor 54 located on the upper portion of the central passage tube 61 is transmitted to the rotating shaft 53 extending along the inside of the central passage tube 61, and is coupled to the lower portion of the rotating shaft 53 and dehydrated. The brush 50 and the brush holder 51 are rotated by the rod 52 formed in a cross shape on the outside of the barrel 30. Preferably, the motor 54 is a motor that swings from side to side at an angle slightly larger than 90 °. In some cases, the support 55 is coupled to the upper portions of the four brush holders 51 in a ring shape, thereby preventing the brush 50 from shaking. In addition, the lower connection portion of the rod 52 and the rotary shaft 53 may be bolted to separate the brush 50 and the brush holder 51 from the rotary shaft 53.

Figure 4 shows a dehydrator for recycling waste plastics, which is another embodiment of the present invention. In this embodiment, the brush 50 and the brush holder 51 are positioned inside the dehydrating container 30 so that the brush 50 is engaged with the dehydrating hole 34. In addition, the rod 52 is also located inside the dehydration container 30 and the lower portion of the rotation shaft 53 is supported by a thrust bearing. Other configurations are the same as the dehydrator for recycling the waste plastic according to the present invention shown in FIG.

The following describes the operation of the dehydrator for recycling waste plastics according to the present invention. Waste styrofoam, such as waste plastics, preferably the rich waste material of the farm, are ground and washed in a previous process. Thereafter, the waste styrofoam is supplied into the dehydration container 30 through the supply pipe 60 by the suction force of the suction fan 63. The waste styrofoam is dehydrated by centrifugal force continuously while rotating about the central passage tube 61. The dehydrated and lighter waste styrofoam is raised along the inside of the central passage pipe 61 and discharged to the next process through the discharge pipe 62. Foreign substances such as wood, iron balls, boulder, winter ice, etc. mixed with the waste styrofoam are discharged to the outside of the dehydration container 30 through the dehydration hole 34, collected in the lower part of the housing 20, and finally the rotary pump It is discharged to the outside of the housing 20 by 40. Foreign matter accumulated in the lower portion of the dehydration container can be removed by separating the lower surface of the cone-shaped housing 26 and the dehydration container (30).

The present invention is capable of recycling waste plastic, preferably waste styrofoam, by a dehydrator having an efficient and simple configuration in which dehydration is continuous before centrifugal force and foreign matters are separated by gravity. In addition, the present invention has the effect of effectively centrifugal dehydration of the waste styrofoam while reducing the flow resistance by the supply pipe eccentrically installed in the center of the dehydration container. The present invention has the effect of centrifugal dehydration with a simple configuration by the central passage pipe installed in the dehydration container, and the waste styrofoam having a specific specific gravity is selectively sucked out and discharged. The present invention has the effect that by the rotary pump installed in the lower portion of the housing, the foreign matter separated from the waste styrofoam can be effectively discharged without backflow. In addition, the present invention is the lower portion of the housing and the dehydrator can be separated, there is an effect of easy removal of internal debris of the housing and dehydrator and maintenance of the inside of the dehydrator. In addition, the present invention has a simple and efficient effect of preventing the clogging of the dehydration hole of the dehydration container by a brush.

Claims (6)

In the dehydrator for waste plastic to dehydrate the crushed and washed waste plastic, A dehydration passage having a cylindrical shape and having a plurality of dehydration holes on its side; A housing incorporating the dewatering container; A waste plastic supply pipe which is eccentrically positioned between the dehydration container and the central passage pipe at an upper side of the dewatering container, and supplies the waste plastic to the inside of the dewatering container; A central passage pipe positioned at an inner center of the dehydration container and having an inlet formed at a lower surface thereof to suck dehydrated waste plastics; A discharge pipe connected to an upper side of the central passage pipe to discharge dehydrated waste plastic; Dehydrator for recycling the waste plastic, characterized in that consisting of a suction fan installed in the discharge pipe for suctioning the waste plastic to continuously centrifugal dehydration and discharge. The method of claim 1, An upper portion of the housing is a cylindrical housing, a lower portion of the housing is a cone-shaped housing, a case installed at the end of the cone-shaped housing to discharge foreign matter to the outside of the housing while maintaining the airtightness of the housing, and the case inside the case A dehydrator for recycling waste plastics, characterized in that a plurality of rotary blades for dividing the inner space of the rotary blades and a rotary pump for supporting the rotary blades and having a rotary shaft rotating therein are added. The method of claim 2, There is no hole for dehydration in the lower surface of the dehydration container, the lower surface of the dehydration container is in the form of a cover detachable from the side of the dehydration container, The dehydrator for recycling waste plastics, characterized in that the cone-shaped housing is also detachable from the cylindrical housing. The method of claim 3, Dehydrator for recycling the waste plastic, characterized in that the waste plastic is waste styrofoam. The method according to any one of claims 1 to 4, A brush engaged with the outer side of the dehydration container; A plurality of brush holders for supporting the brushes along a vertical direction of a side surface, which is a circumferential surface of the dehydration container; A rotating shaft installed along the inside of the central passage pipe and penetrating the lower portion of the constant dehydration tube; A rod connecting the brush holder and the lower part of the rotating shaft; The dehydrator for recycling the waste plastic, characterized in that for rotating the rotary shaft, the motor is located on the upper surface of the central passage pipe. The method according to any one of claims 1 to 4, A brush engaged with the inner side of the dehydrating container; A plurality of brush holders for supporting the brushes along a vertical direction of a side surface, which is a circumferential surface of the dehydration container; A rotating shaft installed along the inside of the central passage pipe and positioned inside the constant dehydration tube; A rod connecting the brush holder and the lower part of the rotating shaft; The dehydrator for recycling the waste plastic, characterized in that for rotating the rotary shaft, the motor is located on the upper surface of the central passage pipe.