KR100991491B1 - Screw-pressing type apparatus using micro-wave - Google Patents

Abstract

PURPOSE: A screw-pressing type apparatus using micro-wave is provided to reduce a dry time while saving energy by removing moisture from waste rubber. CONSTITUTION: A screw-pressing type apparatus using micro-wave includes a chamber(10), a hopper(20), a transfer unit(30), a magnetron(40), a waste-heat recovery unit. Waste rubber and resin are inputted into the chamber through a hopper which is installed in one side of the chamber. The magnetron installed on the top of the chamber is moved and radiates microwave the waste rubber and resin. A screw blade is compressed to remove the moisture from the waste rubber and resin which are transferred. The waste-heat recovery unit collects the heat from the magnetron and supply it inside the chamber.

Description

Screw-pressing type apparatus using micro-wave

The present invention relates to a drying apparatus, and more particularly, to remove a part of the water by compressing while transporting the waste synthetic rubber or resin containing water in a screw method, and to evaporate the water by evaporating the microwave to dry the microwave It relates to a crimping screw type drying apparatus used.

With the development of the petrochemical industry in recent years, the production of various synthetic resins, rubbers, and other organic material products has increased greatly, and the amount of products discarded is increasing rapidly. The amount of waste synthetic resins had to accumulate and emerge as one of the new pollutions.

The wastes discarded after being used for agriculture or industrial use have been incinerated, but in the process of incineration, a large amount of harmful gases are emitted, which has become a major cause of environmental pollution, and raises the problem of inefficient use of resources. It became.

As synthetic rubber or resin waste becomes a social problem, there is an active movement to solve the pollution problem and to make this waste a second resource through a method and a device that can be recycled through a predetermined treatment device.

However, synthetic rubber is a polymer material exhibiting elasticity by a mechanism called vulcanization, and has the same characteristics as thermosetting properties of plastics in order to express its performance. Therefore, it is impossible to recycle the waste synthetic rubber material by melting.

In particular, waste synthetic rubber is produced from various kinds of rubbers, urethane soles, automobile tires, urethane bumpers, etc., which are disposed of at home or in industry, and used as scraps or finely pulverized and recycled into powder for recycling.

Waste synthetic rubber pulverized by such a pulverization method will contain moisture for various reasons.

Such moisture should be removed by drying, which was conventionally dried naturally or blown off with hot air. According to recently published documents, an apparatus for modifying the surface of waste synthetic rubber using microwaves emitted from a magnetron has been known.

However, this method has a disadvantage in that it is difficult to remove all moisture in a short time when a large amount of moisture is included and consumes a lot of energy.

In addition, the transfer device and the drying device is provided separately, there was also a complicated structure.

The present invention has been made to solve the above problems and an object of the present invention is to continuously transport the waste synthetic rubber or resin using a screw, but in a short time by spinning the microwave in a state in which a portion of the water is removed by pre-compression It is to provide a compression screw drying apparatus using a microwave that can remove the water completely.

The present invention for achieving the above object is a chamber, a hopper which is installed on one side of the chamber and the waste synthetic rubber or resin containing water is introduced into the chamber, the drive motor and the chamber is installed in the drive motor A pair of screw rotating shafts and screw blades formed on the screw rotating shafts for conveying waste synthetic rubber or resin introduced into the hopper, and wastes installed in the chamber and conveyed by the conveying means. In a drying apparatus composed of a magnetron that radiates microwaves on synthetic rubber or resins, the screw blades are compressed when the waste synthetic rubber is transported, and the compressed blades are gradually reduced to mutually remove some of the moisture. Consists of a feed blade portion with a constant interval, the screw shaft is different in diameter Is provided and rotated in the same RPM, characterized in that to recover the heat generated from the magnetron to the magnetron is provided with a top waste-heat recovery means for supplying into the chamber.

Here, the lower side of the magnetron is characterized in that it is further provided with reflecting means for reflecting the microwaves emitted from the magnetron in all directions.

At this time, the reflecting means is formed with a rod member installed on the upper side of the conveying means, and a fastening hole through which the rod member penetrates to the center while forming a rugby ball shape as a whole. Characterized in that formed of a reflector.

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At this time, the waste heat recovery means is characterized in that it comprises a heat insulating case for accommodating the magnetron and a fan installed in the upper portion of the chamber to supply the heated air inside the heat insulating case.

Preferably, the upper portion of the chamber is provided with a moisture discharge duct for inducing the discharge of the moisture in the chamber, the moisture discharge duct on the humidity sensor for sensing the humidity in the chamber and the moisture discharge duct on the moisture discharge duct A damper for opening and closing and an inhaler for forcibly sucking and discharging moisture are provided, and when the humidity measured by the humidity sensor is equal to or greater than a predetermined value, the damper is opened to forcibly discharge the moisture.

The effect of the present invention by the configuration as described above is because the screw blade is divided into the pressing portion and the conveying portion dehydrated in the pressing portion and at the same time heat is generated by friction due to the screw shafts of different diameters, so that some water is removed in advance Microwaves can dry in a short time, saving energy and significantly reducing drying time.

In addition, the reflector reflecting the microwave is provided so that the microwave is evenly radiated to all areas, the drying efficiency is high.

In addition, because the transfer means and the magnetron is installed in the chamber can be transported and dried, there is a simple structure.

1 is a block diagram showing a compression screw type drying apparatus using a microwave according to an embodiment of the present invention.
2 is a plan view of the present invention shown in FIG.
3 is a perspective view and a cross-sectional view showing a reflector of the present invention.
4 is a block diagram showing the waste heat recovery means of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. The following description and the accompanying drawings are presented for the overall understanding of the present invention, and thus the technical scope of the present invention is not limited thereto. And a detailed description of known configurations and functions that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a block diagram showing a compression screw type drying apparatus using a microwave according to an embodiment of the present invention, Figure 2 is a plan view of the present invention shown in FIG.

Referring to the present invention, the present invention may be largely composed of the chamber 10, the hopper 20, the conveying means 30, the magnetron 40.

First, the chamber 10 and the hopper 20 will be described together.

The chamber 10 is a rectangular parallelepiped seal which forms a closed space and causes drying by microwave radiation inside.

One side of the chamber 10 is formed with a hopper 20 into which waste synthetic rubber or resin (hereinafter, referred to as 'material') containing water may be added.

In addition, an outlet 12 through which the dried material is discharged through the chamber 10 is also formed in the lower side of the other side of the chamber 10.

In addition, it is preferable that a discharge slit 10a or a discharge hole (not shown) is formed in the bottom of the chamber 10 so that some of the dehydrated water is discharged while the material is compressed by the transfer means 30 to be described later.

Next, the transfer means 30 will be described.

The conveying means 30 is composed of a drive motor 32, a screw rotation shaft 34, a screw blade 36 to convey the material introduced into the hopper 20 to the outlet (12).

The drive motor 32 is installed outside the chamber 10 and the screw rotation shaft 34 rotated by the drive motor 32 is installed along the interior of the chamber 10.

In this case, as shown in FIG. 2, the screw rotation shaft 34 is disposed in parallel and rotates inward to face each other. That is, any one of the screw rotation shaft 34 is directly driven by the drive motor 32 and the other screw rotation shaft 34 is interlocked by a transmission means such as a gear to rotate in opposite directions.

The screw blade 36 has a shape known as being spirally formed on the outer circumference of the screw rotation shaft 34.

By the way, in the present invention, a part of the screw blade 36 is characterized in that the mutual gap is formed to gradually decrease.

In more detail, the screw blade 36 may be divided into a compression blade portion 36a and a transfer blade portion 36b, as shown, the compression blade portion 36a is a mutually of the screw blade 36 The gap is formed gradually, resulting in the conveying of the injected material while pressing.

That is, in Figure 2 has a structure such that a> b> c is a certain amount of material that can be accommodated in the hopper 20 as a distance is introduced into the material at the same time as the screw rotation shaft 34 is rotated In the transfer, since the interval of the pressing blade portion 36a is gradually reduced, such as b and c, the material is compressed while being transferred.

Therefore, while the material is compressed, some of the moisture contained therein escapes and falls downward by gravity and is discharged to the outside through the discharge slit 10a or the discharge hole.

Unlike the press blade portion 36a, the transfer blade portion 36b is formed with the screw blades 36 at regular intervals and transfers a certain amount of material at a constant speed.

Preferably, the interval of the transfer blade portion 36b is constant as shown, but preferably equal to the initial interval (a) of the crimping blade portion 36a. This is because the material compressed by the pressing blade portion 36a is further scattered out of the compressed state by the transfer blade portion 36b with an increased interval, thereby improving the permeability of the microwave to be described later.

On the other hand, in the present invention, the pair of the screw rotation shaft 34 is provided with a different diameter. That is, since one has a relatively large diameter and the other has a small diameter, the speeds at the edges of the respective screw rotation shafts 34 are different even when rotating at the same RPM. This speed difference is called a friction ratio.

As a result, heat is generated as the introduced materials rub against each other between the screw rotation shafts 34, and water generated in the material to be dried is removed by the generated heat. In particular, the polymer compound such as rubber has a viscosity and adhesion, so the friction coefficient is large, thereby generating a lot of heat, thereby increasing the drying efficiency.

Next, the magnetron 40 will be briefly described.

The magnetron 40 is a known device for generating microwaves. In general, microwaves have high energy, straightness, and permeability, and should be used in confined spaces.

Thus, the magnetron 40 is installed on the upper portion of the chamber 10, it is preferable to be installed on the upper surface of the chamber 10 to radiate microwaves into the chamber (10).

In the present invention, when the material is a powder, it may be agglomerated and agglomerated somewhat by the screw blade 36, but there is an advantage of evaporating all of the moisture remaining therein by the straightness and permeability of the microwave.

Preferably, the magnetron 40 is installed so that the plurality is arranged along the transport path of the material so that the water can be gradually and completely removed while the material is transported.

On the other hand, in the present invention, the lower side of the magnetron 40 is preferably provided with a reflecting means 50 for reflecting the microwave so that the microwave is transmitted to all the space in the chamber 10 without gap.

3 is a perspective view and a cross-sectional view showing a reflector of the present invention.

The reflecting means 50 may be composed of a rod member 52 and a reflector 54. As shown in FIG. 1, the rod member 52 is fixed to the upper side of each screw rotation shaft 34 side by side. However, it is preferable to be installed directly below the magnetron 40.

The reflector 54 is coupled and fixed to the rod member 52. The reflector 54 has a circular cross section, such as a rugby ball, as shown in FIG. The cross-sectional area is reduced.

In addition, a through hole 54a through which the rod member 52 can be inserted is formed at the center of the reflector 54. Referring to the cross section at AA ', the cross section is circular and a plurality of concave recesses are formed along the outer circumferential surface. 54b is a shape formed at regular intervals. In addition, the material is suitable for metal to reflect without absorbing microwaves.

Here, the rod member 52 is rotated in conjunction with the drive motor, which causes the reflector 54 fixed to the rod member 52 also rotates together.

Since the reflector 54 of this shape is located directly below the magnetron 40 and rotated by the rod member 52, the reflector 54 reflects the microwaves emitted from the magnetron 40. It is reflected in all directions.

For reference, the upper portion of the chamber 10 is provided with a moisture discharge duct 70 for extracting the evaporated water in the chamber 10 to the outside.

For this operation, a humidity sensor 72 is installed on the moisture discharge duct 70 to sense humidity in the chamber 10, and a damper 74 that opens and closes the moisture discharge duct 70 on one side. Is provided, the inhaler 76 is further installed to forcibly suck the moisture in the chamber 10 is discharged.

Therefore, when the humidity measured by the humidity sensor 72 is greater than or equal to a certain degree, the damper 72 may be automatically opened to discharge moisture. Preferably, the inhaler 76 may be operated to forcibly discharge moisture. It is good to control it. This lowers the humidity in the chamber 10 to promote drying, thereby greatly increasing the drying efficiency.

On the other hand, waste heat recovery means 60 may be further provided to recover the heat generated during operation of the magnetron 40 and to supply it back into the chamber 10 to increase the drying efficiency. Figure 4 is a block diagram showing the waste heat recovery means of the present invention.

The waste heat recovery means 60 is a heat generating case 62 to surround the outside of the magnetron 40 and a small fan 64 is installed on the chamber 10 to generate heat from the magnetron 40. The heated air is supplied into the chamber 10. This structure has the advantage of increasing the drying efficiency.

Hereinafter, the operating state of the present invention will be briefly described.

When the worker puts pieces, lumps or powders of waste synthetic rubber or resin containing moisture through the hopper 20 and drives the driving motor 32, the pair of screw rotation shafts 34 are rotated and introduced. The material starts to be transferred.

At this time, the material is first introduced into the pressing blade portion 36a, and the injected material is compressed while the transfer is in progress, thereby removing some of the water therein and is discharged through the discharge slit 10a.

Subsequently, the pressed material proceeds at a constant speed by the transfer blade part 36b, and moisture is evaporated by the microwaves emitted from the magnetron 40 on the upper side and reflected by the rotating reflector 54. Microwaves are radiated in all directions to reach all parts of the interior of the chamber 10 and evenly penetrate the material to be dried.

This operation increases drying efficiency and allows drying to be completed in a short time.

Meanwhile, moisture evaporated at this time may be released to the outside through the moisture discharge duct 70, and heat generated when the magnetron 40 is operated is supplied back into the chamber 10 by the fan 64. This raises the temperature in the chamber 10 to promote evaporation.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art, various modifications of the present invention within the scope of the claims without departing from the spirit and scope of the present invention And can be changed.

10 chamber 10a discharge slit
12: outlet 20: hopper
30: transfer means 32: drive motor
34: screw rotating shaft 36: screw blade
36a: crimping edge 36b: feed blade
40: magnetron
50: reflecting means 52: rod member
54 Reflector 54a Fastening Hole
54b: depression
60: waste heat recovery means 62: heat insulation case
64: fan
70: moisture discharge duct 72: humidity sensor
74: damper 76: inhaler

Claims (6)

The chamber 10, the hopper 20 installed at one side of the chamber 10 and containing waste synthetic rubber or resin into the chamber 10, the driving motor 32, and the chamber 10. The waste synthetic rubber introduced into the hopper 20 consists of a pair of screw rotating shafts 34 and screw blades 36 formed on the screw rotating shafts 34 installed therein and rotated by the driving motor 32. Consists of a conveying means 30 for conveying resins and a magnetron 40 installed on the chamber 10 and radiating microwaves to waste synthetic rubber or resins conveyed by the conveying means 30. In the drying apparatus,
The screw blade 36 is composed of a pressing blade portion 36a and a mutually constant feeding blade portion 36b, the mutual spacing is gradually reduced so that some of the water is removed while being pressed when the waste synthetic rubber is transported,
The screw rotating shaft 34 is provided with a different diameter to rotate at the same RPM,
Compression screw type drying apparatus using a microwave, characterized in that the waste heat recovery means 60 for recovering the heat generated from the magnetron 40 and supplied to the chamber 10 above the magnetron 40 . The method of claim 1,
On the lower side of the magnetron 40,
Compression screw type drying apparatus using a microwave, characterized in that it further comprises a reflecting means for reflecting the microwaves emitted from the magnetron 40 in all directions. The method of claim 2,
The reflecting means 50,
The rod member 52 is installed and rotated above the transfer means 30, and a fastening hole 54a through which the rod member 52 penetrates is formed at the center while forming a rugby ball shape as a whole. Compression screw type drying apparatus using a microwave, characterized in that the recessed portion (54b) is formed along the outer circumferential surface of the reflector 54 formed at a predetermined interval. delete The method of claim 1,
The waste heat recovery means 60,
A heat insulating case 62 accommodating the magnetron 40 and a fan 64 installed above the chamber 10 to supply heated air in the heat insulating case 62 to the inside of the chamber 10. Pressed screw type drying apparatus using a microwave, characterized in that comprises. The method according to any one of claims 1 to 3 or 5,
On the chamber 10,
A moisture discharge duct 70 is installed to induce the discharge of moisture in the chamber 10, and the humidity sensor 72 and the moisture discharge are configured to detect humidity in the chamber 10 on the moisture discharge duct 70. A damper 74 is provided on the duct 70 to open and close the discharge of moisture and an inhaler 76 for forcibly sucking and discharging the moisture.
When the humidity measured by the humidity sensor 72 is more than a predetermined value by pressing the damper 74 forcibly screw-type drying device using a microwave, characterized in that forcibly discharging moisture.

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