KR102204631B1 - Dehumidifying device provided in manufacturing device for high rigidity packaging band - Google Patents

Abstract

The present invention relates to a dehumidifier for a high-rigidity packaging band manufacturing device, and specifically, to a dehumidifier for a high-rigidity packaging band manufacturing device, characterized in that the dehumidifier is provided in a packaging band manufacturing device which manufactures a high-rigidity hand with a mixed raw material obtained by mixing a recycled plastic raw material with PET chips which are novel raw materials, and configured to remove moisture contained in the mixed raw material and discharge the mixed raw material from which moisture is removed to an extruder, wherein the dehumidifier comprises: a stirring part therein so that the recycled plastic raw material and the PET chips which are novel raw materials are discharged to the extruder while maintained in a state of being mixed at a certain ratio; and an air circulation part, wherein dried hot air generated in the air circulation part is supplied to the dehumidifier so as to enhance dehumidification efficiency, thereby manufacturing a high-rigidity packaging band having uniform physical properties.

Description

Dehumidifying device provided in manufacturing device for high rigidity packaging band}

The present invention relates to a dehumidifying device for a device for manufacturing a high rigidity packaging band, and is specifically provided in a packaging band manufacturing device for manufacturing a high rigidity packaging band from a mixture of recycled plastic raw materials and PET chips as a new raw material. A stirrer is provided inside the dehumidifying device that dehumidifies the moisture contained in the mixed raw material and discharges it to the extruder, so that the recycled plastic raw material and the new raw material PET chips are mixed at a certain ratio and discharged to the extruder and dehumidified. A dehumidifying device for a high-rigidity packaging band manufacturing device that has an air circulation part in the device and supplies the dried hot air generated in the air circulation part to a dehumidifying device to increase the dehumidification effect to produce a high-stiffness packaging band with uniform physical properties. About.

Plastic resin (PET, polyethylene terephthalate, hereinafter referred to as'PET') is a polymer compound generally called polyester or PET, and has characteristics of thermoplasticity, crystallinity, orientation, and hygroscopicity. At this time, a difference occurs in the molecular weight of the polymer according to the increase or decrease in the intrinsic viscosity (IV) of the polymer resin, and the viscosity is the most determining the tensile strength and elongation in the production of recycled PET bands along with orientation and hygroscopicity. It is an important factor.

In general, the manufacture of a packaging band is manufactured by supplying raw materials in the form of a fillet to an injection or extrusion molding machine and heat-molding.In the molding through an injection or extrusion molding machine as described above, when the raw material contains a lot of moisture, The plastic raw material causes hydrolysis, or the raw material itself is deteriorated, causing a problem in that the strength or toughness of the plastic product after molding decreases.

Accordingly, as disclosed in Korean Registered Patent Publication No. 10-1515342 ('improved raw material dehumidification device', 2015.04.24. Announcement), recently, the moisture content contained in plastic raw materials supplied to the molding machine has been reduced to a certain amount or less. To keep it, a step of drying in advance is additionally performed.

In addition, as the depletion of primary raw material resources relative to plastic production has been promoted in recent years, recycled PET is an important secondary resource and the proportion of recycled PET to the human economy is rapidly increasing, but in order to produce packaging bands with high rigidity, The intrinsic viscosity (IV) of 0.75 to 0.9 (dl/g) is required, but in the case of a general PET bottle, it forms an intrinsic viscosity of 0.6 (dl/g) on average, and the chemical properties are suitable for production as a high rigidity band. Since there is a disadvantage that the quality of recycled raw materials is not constant, recycled PET pulverized materials with low IV characteristics and PET chips with high IV characteristics are mixed in an appropriate ratio. .

However, as shown in Figure 2, recycled PET (PET) pulverized product raw materials have different crushed shapes, and the new raw material PET chips are processed into circular fillets, so recycled PET (PET) ) When manufacturing a high-rigidity packaging band with a mixture of pulverized raw materials and new raw material PET chips, the mixed raw material that has flowed into the drying chamber of the dehumidifying device for dehumidification of the mixed raw material is stored in the drying chamber of the dehumidifying device for a long time Due to the weight and frictional resistance between the raw materials while staying, recycled PET (PET) pulverized product raw material is a new raw material PET (PET) chips are collected at the bottom, so recycled PET crushed product raw material and new raw material PET (PET) A band with uniform stiffness because the mixed raw material in which the chips are uniformly mixed cannot be supplied to the extruder, and the mixed raw material in which the recycled PET pulverized material and the new PET chip are unevenly mixed is supplied to the extruder. There is a problem that it is difficult to manufacture.

Korean Registered Patent Publication No. 10-1515342 (announced on April 24, 2015)

The present invention was conceived to solve the above problems, and moisture contained in the mixed raw material in which the recycled PET pulverized material and the new PET chip are mixed so that a packaging band having uniform rigidity can be manufactured. It is intended to provide a dehumidifying device for a high-rigidity packaging band manufacturing apparatus having a stirrer inside the dehumidifying device so that the mixing ratio of the mixed raw material discharged to the extruder by dehumidifying it is kept uniform and discharged to the extruder.

In addition, the present invention is a high rigidity packaging band having an air circulation unit supplying dried hot air into the dehumidifying device in order to improve the efficiency of dehumidification of moisture contained in the mixed raw material so that a packaging band having uniform rigidity can be manufactured. It is intended to provide a dehumidifying device for manufacturing equipment.

In order to solve the above problems, the present invention is a high-rigidity packaging band manufacturing apparatus for manufacturing a high-rigidity packaging band with a mixture of at least two or more materials forming a different size, the high-rigidity packaging band manufacturing apparatus A dehumidifying device for simultaneously dehumidifying and stirring the mixed raw material, and a dehumidifying device for simultaneously dehumidifying and stirring the mixed raw material, has a raw material supply unit supplied with the mixed raw material in the upper part, and dried mixing in the lower part. A drying chamber provided with a raw material discharge unit for discharging the raw material; An air circulation unit configured to supply the dried hot air into the drying chamber and discharge dehumidified wet air; And a stirring unit provided inside the drying chamber to agitate the mixed material contained in the drying chamber, wherein the inside of the drying chamber decompresses the mixed material to condense moisture absorbed in the mixed material to move to the surface. A raw material receiving space is formed so that the moisture that has moved to the surface is removed with the dried hot air, and a supply nozzle for spraying the dried hot air supplied from the air circulation unit is dried in the raw material receiving space. It is provided to face downward from the central axis of the chamber, and the supply nozzle is formed in a rhombus shape that is a vertical symmetrical shape, and the upper part is connected to the dry air supply pipe of the air circulation part, and the drying supplied to the supply nozzle through the dry air supply pipe A spray hole is formed in the lower portion of the supply nozzle so that the hot air can be injected in the lower direction of the raw material receiving space, and the stirring unit is provided between the supply nozzle and the side wall of the drying chamber so as not to interfere with the supply nozzle. It is characterized.

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In addition, the stirring unit is characterized in that it comprises a stirring motor provided on the upper side of the drying chamber, a stirring shaft that rotates by receiving power from the stirring motor, and a stirring blade provided on the stirring shaft.

In addition, the stirring blade, a spiral stirring blade provided on the outer peripheral surface of the stirring shaft; And a straight stirring blade provided at an end of the stirring shaft.

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In addition, the air circulation unit is provided in the upper portion of the drying chamber, a psychrometric air discharge pipe through which the psychrometric air in the drying chamber is discharged; A first drying filter provided in a piping line connected to the psychrometric discharge pipe and removing moisture and contaminants in the psychrometric air discharged through the psychrometric air discharge pipe; First and second drying coolers provided in a piping line connected to the first drying filter and condensing moisture contained in the air passing through the first drying filter; A desiccant tank provided in a piping line connected to the first and second drying coolers and accommodating a desiccant for absorbing moisture contained in the air passing through the first and second drying coolers; A second drying filter provided in a piping line connected to the desiccant tank and removing foreign matter contained in the dry air passing through the desiccant tank; A drying heater provided in a piping line connected to the second drying filter and heating air that has passed through the second drying filter; A dry air supply pipe for transferring the hot air dried by the drying heater to a supply nozzle; And a supply nozzle provided in the dry air supply pipe and supplying the dried hot air supplied through the dry air supply pipe into the drying chamber.

In addition, a drying blower is further provided in a pipe line between the first drying cooler and the second drying cooler.

In addition, the air circulation unit includes a dry air supply line including the desiccant tank, a second drying filter, and a dry air supply pipe, and a wet air discharge pipe, a first drying filter, a first drying cooler, a drying blower, a second drying cooler, and a desiccant tank. The wet air discharge line is characterized in that it consists of a closed cycle system that allows air to flow in the air circulation unit by a dry blower.

In addition, the air circulation unit further includes a regenerative circulation system for regeneration of the desiccant desiccant contained in the desiccant tank, wherein the regenerative circulation system includes: a regenerative filter for filtering outside air sucked by a regenerative blower; A regeneration heater for heating the outside air passing through the regeneration filter to a temperature for removing moisture contained in the desiccant; And a regeneration gas discharge line for regenerating and discharging the desiccant and desiccant contained in the desiccant tank by introducing the outside air passing through the regeneration filter into the desiccant tank.

In addition, the air circulation unit further comprises a psychrometric regeneration line branched between the psychrometric air discharge pipe of the psychrometric air discharge line and the first drying filter and connected to the desiccant tank.

The present invention according to the above configuration allows the mixed raw material in which the recycled PET pulverized product raw material and the new raw PET chip are mixed to be dehumidified at a uniform mixing ratio and discharged to the extruder, so that the physical properties are uniform. There is an effect that a rigid packaging band is manufactured.

In addition, according to the present invention, as the mixed raw material is dehumidified with dried hot air supplied from the air circulation unit, a high rigidity packaging band having uniform physical properties is produced.

1 is a block diagram showing a packaging band manufacturing apparatus according to the present invention.
2 is a block diagram showing an air circulation unit of the dehumidifying device according to the present invention.
3 is a cross-sectional view showing a dehumidifying device according to an embodiment of the present invention.
4 is a cross-sectional view showing the dehumidifying device according to FIG. 3.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being “connected” or “connected” to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Hereinafter, the technical idea of the present invention will be described in more detail using the accompanying drawings.

The accompanying drawings are only an example shown to describe the technical idea of the present invention in more detail, so the technical idea of the present invention is not limited to the form of the accompanying drawings.

1 is a configuration diagram showing a packaging band manufacturing apparatus according to the present invention, Figure 2 is a configuration diagram showing an air circulation part of the dehumidifying device according to the present invention, referring to Figures 1 and 2, the packaging of the present invention The band manufacturing apparatus 1 includes a mixing tank 10, a dust collector 20, a dehumidifying device 1000, an extruder 40, a cooler 50, a primary drawer 60, a preheater 70, and a secondary drawer. It is configured to include (80) and a winder (90).

The mixing tank 10 is a mixture of recycled PET flakes (hereinafter referred to as ``recyclable PET flakes'') and new raw material PET chips at a certain ratio. It is a tank that manufactures mixed raw materials.

Here, the recycled PET piece is a piece of PET that is pulverized after removing and washing foreign substances for recycling, and is crushed into various shapes and shapes when pulverized. It is processed into a circular fillet shape as a water support material for manufacturing a rigid packaging band.

The recycled PET pieces and new raw material PET chips mixed in the mixing tank 10 are made of recycled PET pieces and new raw material PET chips according to the physical properties of the high rigidity packaging band to be manufactured. Since the mixing ratio is determined, it can be modified in various ways according to the design of the physical properties of the packaging band.

The dust collector 20 is a device for removing impurities such as dust contained in the mixed raw material transferred from the mixing tank 10, and the mixed raw material from which the impurities have been removed from the dust collector 20 is supplied to the dehumidifying device 1000. .

The dust collector 20 is preferably a cyclone dust collector that suppresses turbulence of the mixed material and separates dust and moisture by centrifugal force acting on the mixed material by causing a rotational motion.

The dehumidifying device 1000 is a device that removes moisture contained in the mixed raw material supplied from the dust collector 20. The inside of the drying chamber 100 of the dehumidifying device 1000 is decompressed to lower the dew point in the air, The moisture is condensed to move to the surface, and the moisture that has moved to the surface is supplied with dry hot air to remove the moisture.

When the moisture content of the mixed raw material dehumidified by the dehumidifying device 1000 is 0.05% or more, the fluidity increases and strength decreases during molding, making it impossible to manufacture a packaging band having uniform rigidity. In order to manufacture, the moisture contained in the mixed raw material must be dehumidified to less than 0.05% by weight in the dehumidification process.

In general, in order to dehumidify the moisture contained in the mixed material to less than 0.05% by weight, the mixed material is dehumidified while staying in the dehumidifying device for 4 to 8 hours.

At this time, the mixed raw material in which the recycled PET pieces and the new material PET chips are mixed stays in the drying chamber 100 of the dehumidifying device 1000 for a long time, and thus the recycled PET pieces and the new material PET ) Due to different weights and frictional resistance of chips, new raw material PET chips first descend to the bottom, and recycled PET pieces remain on the top, resulting in recycled PET pieces and new raw materials. PET chips cannot be continuously discharged to the extruder 40 at a uniform mixing ratio, and mixed raw materials with a non-uniform mixing ratio of recycled PET pieces and new raw material PET chips are transferred to the extruder 40. Due to the discharge, there is a problem that a product with uniform rigidity of the packaging band cannot be produced.

In order to solve this problem, the mixed raw material of the recycled PET pieces dehumidified in the dehumidifying device 1000 and the new PET chips can be continuously supplied to the extruder 40 at a uniform mixing ratio. A dehumidifying device for a high-rigidity packaging band manufacturing device was invented, provided with a stirring part 300 in the dehumidifying device and supplied with hot air dried by the dehumidifying device to improve the dehumidification effect.

Thereafter, the mixed raw material discharged from the dehumidifying device 1000 is molded in the extruder 40 and injected to have appropriate viscosity and stiffness, and the cooler 50 and the primary drawer 60 are molded with the set width and thickness of the band. ), the preheater 70, the secondary drawer 80, and the take-up machine 90 are sequentially passed through a roll-shaped packaging band.

At this time, for the automation of the manufacturing apparatus 1, pipe pipes for transferring raw materials are connected between the mixing tank 10, the dust collector 20, the dehumidifying device 1000, and the extruder 40 to transfer the mixed materials. It can be configured to automate control so that the entire manufacturing process can be carried out continuously by automating the process and by automating sequential processes.

With reference to FIG. 2, a dehumidifying device 1000 for a high rigidity packaging band manufacturing apparatus according to the present invention will be described in more detail.

The dehumidifying device 1000 of the present invention is a drying chamber 100 in which a raw material supply unit 110 to which a mixed raw material is supplied is connected to an upper portion, and a raw material discharge unit 120 for discharging the dried mixed raw material is provided at the lower part. And an air circulation unit 200 provided to supply the dried hot air into the drying chamber 100 and discharge the dehumidified wet air.

The drying chamber 100 has a tapered shape whose inner diameter gradually decreases as the lower side goes downward, and a raw material receiving space 130 in which the mixed raw material supplied from the dust collector 20 is accommodated is formed, and the raw material receiving space A sensor 160 capable of measuring the temperature and humidity of 130 may be provided on one side of the drying chamber 100.

In the raw material receiving space 130 formed inside the drying chamber 100, a supply nozzle 210 for spraying the dried hot air on the mixed raw material accommodated in the raw material receiving space 130 is provided with the raw material receiving space ( 130), provided to face downward on the central axis of the drying chamber 100, and at the lower end of the raw material receiving space 130 below the supply nozzle 210, a dehumidified mixed material is The discharged raw material discharge unit 120 is formed.

A psychrometric air discharge hole 220 is formed in the upper portion of the drying chamber 100 so that air containing moisture (hereinafter, referred to as ``moist air'') evaporated from the mixed material can be discharged to the air circulation unit 200, and , The wet air discharge pipe 221 of the air circulation part 200 is connected to the wet air discharge hole 220, and the supply nozzle 210 is connected to the dry air supply pipe 211 of the air circulation part 200 to circulate air. The hot air dried in the unit 100 is supplied to the supply nozzle 210 through the dry air supply pipe 211, and the dried hot air supplied to the supply nozzle 210 is a raw material receiving space through the supply nozzle 210 It is sprayed in the lower direction of (130).
To this end, the supply nozzle 210 is formed in a rhombus shape that is a vertical symmetrical shape, the upper part is connected to the dry air supply pipe 211 of the air circulation unit 200, and the supply nozzle 210 through the dry air supply pipe 211 ), a spray hole (not shown) is formed in the lower portion of the supply nozzle 210 so that the dried hot air supplied to it can be sprayed in the lower direction of the raw material receiving space 130.

The air circulation unit 200 supplies and sprays an appropriate temperature and air volume for drying the mixed material contained in the drying chamber 100 to the inside of the drying chamber 100, and a humid air containing moisture dehydrated from the mixed material Is discharged from the inside of the drying chamber 100 to remove moisture contained in the psychrometric air, and then supplied to the inside of the drying chamber 100 again.

Specifically, the air circulation unit 200 is connected to the psychrometric air discharge hole 220 formed in the upper portion of the drying chamber 100 to discharge the psychrometric air inside the drying chamber 100, and the psychrometric air A first drying filter 232 provided in a piping line connected to the discharge pipe 221 to remove moisture and contaminants in the wet air discharged through the wet air discharge pipe 221, and a piping line connected to the first drying filter 232 The first and second drying coolers 235 and 237 provided in the first drying filter 232 and condensing moisture contained in the air, the first drying cooler 235 and the second drying cooler 237 ) Is provided in the pipe line between the drying blower 236 for flowing air in the air circulation unit, and the first and second drying coolers 235, which are provided in the pipe lines connected to the first and second drying coolers 235 and 237, Included in a desiccant tank 231 containing a desiccant and desiccant for absorbing moisture contained in the air that has passed through 237, and the drying air that has passed through the desiccant tank 231 provided in a piping line connected to the desiccant tank 231 A second drying filter 234 provided to remove foreign substances, and a drying heater 233 provided in a piping line connected to the second drying filter 234 to heat the air passing through the second drying filter 234 ), and a dry air supply pipe 211 that transfers the hot air dried by the drying heater 233 to the supply nozzle 210 and the dry air supply pipe 211 provided through the dry air supply pipe 211 It is configured to include a supply nozzle 210 for injecting the dried hot air into the drying chamber 100.

The air circulation by the air circulating unit 200 allows the dried hot air sprayed into the drying chamber 100 by the supply nozzle 210 to discharge moisture contained in the mixed raw material and then discharged from the mixed raw material. Moisture is absorbed to become wet air, and the wet air is discharged to the outside of the drying chamber 100 through the wet air discharge pipe 221 coupled to the wet air discharge hole 220 of the drying chamber 100, and discharged to the wet air discharge pipe 221 The moisture and contaminants in the psychrometric air are removed by the first drying filter 232, and the air from which moisture and contaminants in the psychrometric air are removed by the first drying filter 232 is removed by the first and second drying coolers 235 and 237. The moisture contained in the air is cooled so that the moisture contained in the air can be condensed and then introduced into a desiccant tank 231 containing a desiccant for absorbing moisture contained in the air, and the moisture contained in the air is removed, and in the desiccant tank 231 Dry air from which moisture has been removed is removed from the foreign substances contained in the air by the second drying filter 234, and the air from which the foreign substances are removed by the second drying filter 234 is heated by the drying heater 233 and then dried hot air. It becomes air and is supplied to the supply nozzle 210 through the dry air supply pipe 211, and is sprayed from the supply nozzle 210 into the drying chamber 100.

At this time, the drying air supply line (L1) connecting the desiccant tank 231 from the drying air supply pipe 211 of the drying chamber 100 and the desiccant tank 231 from the wet air discharge pipe 221 of the drying chamber 100 A closed cycle system that allows air to flow in the air circulation unit 200 by the dry blower 236 is constructed in the psychrometric air discharge line L2 connecting to the dry air blower 236.

The dry air supply line (L1) is composed of a desiccant tank 231, a second drying filter 234, and a dry air supply pipe (211) in that order, and the humid air discharge line (L2) is a wet air discharge pipe (221), a first It consists of a drying filter 232, a first drying cooler 235, a drying blower 236, a second drying cooler 237, and a desiccant tank 231 in this order.

In addition, the air circulation unit 200 further includes a regeneration circulation system for regeneration of the desiccant desiccant accommodated in the desiccant tank 231, and in more detail, regeneration for filtering the outside air sucked by the regeneration blower 242 The outside air that has passed through the filter 241 and the regeneration filter 241 passes through a regeneration heater 243 that heats to a temperature to remove moisture contained in the desiccant and flows into the desiccant tank 231, and the desiccant After regenerating the desiccant desiccant accommodated in the tank 231, it may be discharged through the regeneration gas discharge line L4.

In addition, in order to increase the heat exchange efficiency for regeneration of the desiccant, a psychrometric air regeneration line (L2-2) branched between the psychrometric air discharge pipe 221 and the first drying filter 232 of the psychrometric air discharge line (L2) is provided. Through this, the high-temperature humid air discharged from the drying chamber 100 is circulated into the desiccant tank 231 and used for regeneration of the desiccant, thereby reducing heat loss in the regeneration process.

Here, the air discharged through the psychrometric regeneration line (L2-2) and the desiccant tank 231 is formed between the second drying cooler 237 and the desiccant tank 231 of the psychrometric air discharge line (L2). It is connected to the line (L2-1), the flow rate of the intake air for regeneration circulated by the psychrometric air regeneration valve 244 provided at the connection point between the psychrometric air regeneration line (L2-2) and the psychrometric air drying line (L2-1). Adjust.

At this time, the controlled flow rate can be adjusted according to the temperature of the raw material discharged from the drying chamber 100 and the molding performance according to the band heater in the extruder. In order to maintain the optimum performance, the flow rate discharged from the drying chamber 100 In the dehumidification process by continuously measuring the temperature of the raw material, the hot air temperature flowing into the drying chamber 100, and the temperature at which the discharged wet air flows into the desiccant tank 231, the blower speed is controlled with a variable frequency drive (VFD). Heat consumption can be minimized.

As described above, after the mixed raw material introduced into the drying chamber 100 undergoes a dehumidification process in the dehumidifying device, the moisture contained in the mixed raw material is removed, so that the moisture content becomes less than 0.05%, the manufacture of a high rigidity packaging band is performed. In order to be supplied to the extruder 40.

However, the mixed raw material mixed with recycled PET pieces and PET chips, which are crushed into different shapes and sizes, is supplied to the dehumidifying device 1000 and then dried in the dehumidifying device 1000. Due to the difference in the size and weight of the recycled PET pieces and the new PET chips and the difference in the drop friction coefficient, the new PET chips first fall and reach the bottom of the dehumidifying device 1000, Afterwards, recycled PET pieces fall and are accumulated on the first dropped new material PET chips, so that the recycled PET pieces and the new material PET chips are separated from each other to form a layer. In this state, it is supplied to the extruder 40, and a part of the packaging band that is continuously manufactured is made of raw materials containing many new raw material PET chips, and part of it is made of raw materials containing many pieces of recycled PET. There is a phenomenon in which a packaging band with uniform physical properties cannot be manufactured.

Accordingly, the present invention is to solve the above problem by further providing a stirring unit 300 in the drying chamber 100, which is a configuration of the dehumidifying device 1000 for a high rigidity packaging band manufacturing apparatus.

The stirring unit 300 is provided inside the drying chamber 100 to stir the mixed raw material contained in the drying chamber 100, and at least one piece of the recycled PET and a new material PET During the process of dehumidifying while the mixed raw material in which chips are mixed in a certain ratio stays for a long time in the drying chamber 100 of the dehumidifying device 1000, the recycled PET pieces and the new raw material PET chips are not separated from each other. It is a configuration provided to produce a packaging band having uniform rigidity by being discharged to the extruder 40.

That is, the stirring unit 300 in the internal raw material receiving space 130 of the drying chamber 100 so that the mixed raw material accommodated in the raw material receiving space 130 provided inside the drying chamber 100 is stirred even during the dehumidification process. ), so that the mixing ratio of the mixed raw material mixed with the recycled PET pieces and the new PET chips discharged from the drying chamber 100 and flowing into the extruder 40 is uniformly set at a set mixing ratio. Mixing raw materials are continuously stirred by the agitating unit 300 provided in the dehumidifying device 1000 so that they can be continuously supplied.
The stirring unit 300 is between the supply nozzle 210 and the side wall of the drying chamber 100 so as not to interfere with the supply nozzle 210 provided in the raw material receiving space 130 of the drying chamber 100. It is equipped.

Hereinafter, with reference to the drawings, the agitation unit 300 provided in the dehumidifying device for a high rigidity packaging band manufacturing apparatus of the present invention proposed to solve the above-described problems will be described in detail through examples.

<Example: Dehumidifying device equipped with a stirring part>

3 is a cross-sectional view showing a dehumidifying device according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view showing the dehumidifying device according to FIG. 3, and referring to FIGS. 3 to 4, The dehumidifying device for a rigid packaging band manufacturing apparatus further includes a stirring unit 300 provided in the drying chamber 100 to stir the mixed raw materials contained in the drying chamber 100.

The stirring unit 300 is a stirring motor 310 provided on the upper side of the drying chamber 100 and the stirring shaft 320 and the stirring shaft 320 rotating by receiving power from the stirring motor 310 It may be configured to include a stirring blade 330 for stirring the mixed raw material contained in the raw material receiving space 130.

The stirring blade 330 is provided with a spiral stirring blade 331 on the outer circumferential surface of the stirring shaft 320 in order to smoothly agitate the mixed raw material contained in the raw material receiving space 130 of the drying chamber 100, and the stirring A straight stirring blade 332 may be provided at the end of the shaft 320, and if the stirring blade 330 is configured to agitate the mixed raw material received, it may be modified in various numbers and shapes without departing from the gist of the present invention. It will be possible.

At this time, the stirring blade 330 of the stirring unit 300 is preferably disposed at a predetermined interval from the supply nozzle 210 so that the rotation radius of the stirring blade 330 does not interfere with the supply nozzle 210, and , The spacing is sufficient if the recycled PET chips and the new PET chips are not separated from each other, and a uniform mixing ratio can be maintained.

In addition, the stirring unit 300 may be composed of a plurality of stirring shafts 320 provided with stirring blades 330, and a stirring shaft gear 321 is provided above the plurality of stirring shafts 320, respectively, , The stirring shaft gear 321 is connected by the stirring shaft 320 of the stirring motor 310 and the power belt 311 to rotate the stirring shaft 320 by the stirring motor 310.

Here, the plurality of stirring shafts 320 of the stirring unit 300 may be configured to control stirring characteristics such as rotation speed and rotation cycle according to the shape, number, and stirring method of the stirring blades 330. Each of the stirring motors 310 may be modified to be connected to the stirring shaft 320.

The present invention is not limited to the above-described embodiments, and of course, various modifications can be made without departing from the gist of the present invention as claimed in the claims.

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1: Packaging band manufacturing device
10: mixing tank 20: dust collector
40: extruder 50: cooler
60: primary drawer 70: preheater
80: secondary drawing machine 90: winding machine
1000: Dehumidifying device for high rigidity packaging band manufacturing device
100: drying chamber
110: raw material supply unit 120: raw material discharge unit
130: raw material receiving space 160: sensor
200: air circulation unit
210: supply nozzle 211: dry air supply pipe
220: psychrometric air discharge hole 221: psychrometric air discharge pipe
231: desiccant tank 232: first drying filter
233: drying heater 234: second drying filter
235: first drying cooler 236: drying blower
237: second drying cooler 241: regeneration filter
242: regenerative blower 243: regenerative heater
244: wet air regeneration valve
300: stirring part
310: stirring motor 311: power belt
320: stirring shaft 321: stirring shaft gear
325: protruding blade 330: stirring blade
331: spiral stirring blade 332: straight stirring blade
L1: Dry air supply line L2: Wet air discharge line
L2-1: Dry air line L2-2: Air regeneration line
L3: Regeneration gas inlet line L4: Regeneration gas discharge line

Claims (13)

In the high-rigidity packaging band manufacturing apparatus for manufacturing a high-rigidity packaging band from a mixed raw material obtained by mixing at least two or more materials having different sizes,
The high rigidity packaging band manufacturing apparatus includes a dehumidifying device for simultaneously dehumidifying and stirring the mixed raw material,
A dehumidifying device for simultaneously dehumidifying and stirring the mixed raw material,
A drying chamber provided with a raw material supply unit to which the mixed raw material is supplied at an upper portion, and a raw material discharge unit for discharging the dried mixed raw material at the lower portion;
An air circulation unit configured to supply the dried hot air into the drying chamber and discharge dehumidified wet air; And
Includes; a stirring unit provided inside the drying chamber to stir the mixed raw material accommodated in the drying chamber,
Inside the drying chamber, a raw material receiving space is formed to decompress the mixed raw material to condense the moisture absorbed in the mixed raw material to move it out to the surface, and then remove the moisture from the surface with dried hot air,
In the raw material receiving space, a supply nozzle for injecting dried hot air supplied from the air circulation unit is provided to face downward on the central axis of the drying chamber,
The supply nozzle is formed in a rhombus shape that is a vertical symmetrical shape, and the upper part is connected to the dry air supply pipe of the air circulation unit, and the dried hot air supplied to the supply nozzle through the dry air supply pipe is sprayed in the lower direction of the raw material receiving space. A spray hole is formed in the lower portion of the supply nozzle so that
The agitating unit is a dehumidifying device for a high rigidity packaging band manufacturing apparatus, characterized in that provided between the supply nozzle and the side wall of the drying chamber so as not to interfere with the supply nozzle.
delete The method of claim 1,
The stirring unit,
A stirring motor provided on the upper side of the drying chamber;
A stirring shaft rotating by receiving power from the stirring motor; And
A dehumidifying device for a device for manufacturing a high rigidity packaging band, comprising: a stirring blade provided on the stirring shaft.
The method of claim 3,
The stirring blade,
Spiral stirring blades provided on the outer circumferential surface of the stirring shaft; And
A dehumidifying device for a high-rigidity packaging band manufacturing apparatus comprising: a straight stirring blade provided at an end of the stirring shaft.
delete delete delete The method according to any one of claims 1 or 3 or 4,
The air circulation unit,
A wet air discharge pipe provided above the drying chamber and through which the wet air inside the drying chamber is discharged;
A first drying filter provided in a piping line connected to the psychrometric discharge pipe and removing moisture and contaminants in the psychrometric air discharged through the psychrometric air discharge pipe;
First and second drying coolers provided in a piping line connected to the first drying filter and condensing moisture contained in the air passing through the first drying filter;
A desiccant tank provided in a piping line connected to the first and second drying coolers and accommodating a desiccant for absorbing moisture contained in the air passing through the first and second drying coolers;
A second drying filter provided in a piping line connected to the desiccant tank and removing foreign matter contained in the dry air passing through the desiccant tank;
A drying heater provided in a piping line connected to the second drying filter and heating air that has passed through the second drying filter;
A dry air supply pipe for transferring the hot air dried by the drying heater to a supply nozzle; And
And a supply nozzle provided in the dry air supply pipe and supplying dried hot air supplied through the dry air supply pipe to the inside of the drying chamber.
The method of claim 8,
A dehumidifying device for a high rigidity packaging band manufacturing apparatus, characterized in that a drying blower is further provided in a pipe line between the first drying cooler and the second drying cooler.
The method of claim 9,
The air circulation unit,
A dry air supply line including the desiccant tank, a second drying filter, and a drying air supply pipe, and a psychrometric air discharge pipe, a first drying filter, a first drying cooler, a drying blower, a second drying cooler, and a desiccant tank. Dehumidifying device for a high rigidity packaging band manufacturing apparatus, characterized in that consisting of a closed cycle system to allow air to flow in the air circulation unit by a dry blower.
The method of claim 10,
The air circulation unit further includes a regeneration circulation system for regeneration of the desiccant desiccant accommodated in the desiccant tank,
The regenerative circulation system includes a regenerative filter for filtering outside air sucked in by a regenerative blower;
A regeneration heater for heating the outside air passing through the regeneration filter to a temperature for removing moisture contained in the desiccant; And
And a regeneration gas discharge line for regenerating and discharging the desiccant contained in the desiccant tank by introducing outside air passing through the regeneration filter into the desiccant tank.
The method of claim 10,
In the air circulation unit,
Dehumidifying apparatus for a high rigidity packaging band manufacturing apparatus, characterized in that it further comprises a psychrometric regeneration line branched between the psychrometric air discharge pipe of the psychrometric air discharge line and the first drying filter and connected to the desiccant tank.
In the packaging band manufacturing apparatus comprising a mixing tank, a dust collector, a dehumidifying device, an extruder, a cooler, a primary drawer, a preheater, a secondary drawer and a winder,
The dehumidifying device is a high rigidity packaging band manufacturing apparatus, characterized in that the dehumidifying device for the high rigidity packaging band manufacturing apparatus according to any one of claims 1, 3 or 4 is provided.

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