KR20200025393A - Manufacturing method of expanding and softening chaff and its device - Google Patents

Abstract

The present invention relates to a method and a device for manufacturing expanded rice husks capable of improving a rice husk absorption rate. Moisture is mixed with rice husks to enable fluidization and expansion, and then the mixture is extruded through a cylindrical extrusion hole such as a pellet forming die, wherein a temperature is raised to 100 to 200°C according to a rotational speed of an expanding die by friction of the rice husks and a roller shell (extrusion roller) before the rice husks, fluidized by moisture addition, are introduced into the extrusion hole. The risk husks are compressed by 3 to 5 times of an input volume by friction with an inner wall of the extrusion hole after introduced into the extrusion hole. During the compression, moisture contained in the rice husks is trapped in the extrusion hole in a vapor state. When the rice husks are discharged from the extrusion hole, pressure is released and the rick husks are expanded.

Description

Drafting chaff production method and apparatus for improving chaff absorption rate {MANUFACTURING METHOD OF EXPANDING AND SOFTENING CHAFF AND ITS DEVICE}

The present invention relates to a method for manufacturing a expanded chaff and a device for improving the chaff absorption rate, and more specifically, after mixing the water (water) in the chaff so as to fluidize and swell, the cylindrical extrusion hole (such as pellet molding die) Rotation speed of the expansion die by friction between the rice hull and the roller shell (extrusion roller) in the previous stage where the chaff fluidized by adding water (water) is introduced into the extrusion port. According to the present invention, it is allowed to rise up to 100 ~ 200 ℃, and compresses up to 3 ~ 5 times of the input volume by friction with the inner wall of the extruder after the extruder is inserted. The present invention relates to an expanded chaff production method and apparatus for improving the chaff absorption rate so as to be decompressed and expanded at the moment of being discharged from the extrusion port in the state of being trapped in the state.

In general, chaff is a by-product from the operation of rice and rice plants, accounting for about 17% (by weight) of grains, and has been used mainly for lightning bombs, fruit packings, rugs and compost. The use of rice husk is being avoided due to the reduction of briquette use, the high quality of packaging materials and the increase of transportation cost.

These rice husks have a thick bristles on the surface, are lignin, and are epidermal cells deposited with silicic acid, so the tissue is strong and difficult to penetrate the water, so it does not corrode well.

However, when chaff is simply crushed and used, there is a problem in that the crushed chaff has a strong structure due to the nature of the chaff, and it is difficult to use because it is difficult to penetrate moisture.

In addition, in the case of crushing the chaff with an existing grinder there is a problem that the parts of the chaff is frequently replaced because the chaff structure is strong and wear of the grinder is severe.

In view of these problems, chaff swelling device is generally known to expand and soften the texture of chaff to improve the water absorption.

In the case of swollen rice hulls, fermentation is fast and gas generation is remarkably reduced, and moisture content and ground grains are very constant because they have a soft structure and water absorption which are remarkably different from the ground chaff.

Due to these characteristics, the expanded chaff can be used in various fields such as moisture control materials, barn rugs, forages, horticultural soils, and rice cultivation soils.

In the conventional chaff expansion device, a discharge port is formed in the cylindrical casing for compressing the injected chaff to discharge the chaff in a horizontal direction, and the tapered end portion of the cylindrical casing is narrowed, and a spiral in the cylindrical casing is formed. The screw shaft provided with the screw is rotated in the horizontal direction to compress, and the tapered end portion of the screw shaft is narrowed to expand and soften the rice hull.

That is, in the conventional chaff expansion device, the chaff is compressed and heated by rotating the screw shaft while applying water by adding chaff, and the chaff is compressed and heated, and the chaff is released into the atmosphere from the outlet of the end of the cylindrical casing to insulate and expand the chaff. Simultaneous grinding was performed.

The chaff chaff produced by the chaff dilatation device is formed to have a smaller particle size than the chaff as a raw material, and the particle size of the chaff is made fine by reducing the gap formed between the screw shaft and the outlet wall surface. This gap was made larger so that the grains of the expanded chaff could be roughened.

However, the conventional horizontal chaff swelling device is supported by the bearing only on the opposite side where the screw shaft is tapered in the cylindrical casing, so that the horizontal shaking of the screw shaft increases during rotation, and the horizontal shaking becomes larger due to the uneven distribution of the chaff and its uneven distribution. Since the rotational moment of inertia is not constant, fatigue occurs in the screw shaft, which causes a problem that the replacement time is shortened due to high wear rate of the screw.

In addition, because the screw shaft and the cylindrical casing is fixed, it is difficult to adjust the fineness according to the need to adjust the fineness according to the need, and in the case of conventional chaff feeding screw, because of frequent clogging phenomenon, continuous chaff flattening device Difficult to use

In order to solve the above problems, the Korean Patent Registration No. 10-0953862 (registration date: April 13, 2010, chaff swelling and grinding device) of the technology to expand the chaff through the roller after heating to a temperature of 180 ~ 200 ℃ Is disclosed.

That is, the heat dissipation fins of the heat exchange unit for heating a plurality of heat pipes from the outside of the drying chamber with a burner and rapidly transferring heat through the heat transfer medium inserted into the heat exchange unit by the heat pipe circumferentially formed inside the drying chamber are provided. It is heated to generate a temperature of 180 ~ 200 ℃ in the interior of the drying chamber, while the chaff is gradually moved downward while contacting the heat radiating fins and vacuum-dried, and between the grinding roller and the millstone roller arranged in the lower grinding chamber of the drying chamber While passing through the second to be crushed to the size of 200 to 300 mesh, which has a problem that the chaff is pulverized into fine powder or the color browning occurs and the manufacturing process is complicated to reduce the production productivity .

In addition, Korean Patent Registration No. 10-0699176 (Registration Date: March 19, 2007, rice hull expanding device) is disclosed, which applies a method of compressing and depressurizing a conical casing heated to 200 to 300 ° C. The energy input cost is high by heating the rice hull or extrusion casing at a temperature of 300 ° C, and when the extrusion casing is used, the color changes due to friction, and the rice husk turns into fine powder due to the friction of the rice hull between the screw and the casing. There is a problem that is difficult to use as a livestock rug crushed.

Republic of Korea Patent Registration No. 10-0953862 (registration date: April 13, 2010, chaff expansion and grinding device) is disclosed. Republic of Korea Patent Registration No. 10-0699176 (registration date: March 19, 2007, chaff dilation device) is disclosed. Republic of Korea Patent Publication No. 10-2002-0023195 (published: 2002.03.28, chaff expansion device) is disclosed. Republic of Korea Patent Registration No. 10-0711518 (registration date: April 19, 2007, chaff expansion device) is disclosed.

In order to solve the above problems, the present invention mixes the water to the fluid and expand the rice husk to extrude through a cylindrical extrusion port such as a pellet molding die, the chaff is fluidized by the addition of water into the extrusion port In the previous step, the chaff and the roller shell (extrusion roller) are raised to 100 ~ 200 ℃ according to the rotation speed of the expansion die by friction between the roller shell (extrusion roller). The method of preparing chaff which is compressed to 3 ~ 5 times and improves the chaff absorption rate which is decompressed and expanded at the moment of being discharged from the extrusion port while the moisture contained in the rice husk is trapped in the extrusion port during the compression. And its manufacturing apparatus.

In addition, another object of the present invention is a method for producing a chaff chaff to increase the chaff absorption rate is not required by using a separate heat energy friction heat generated by the friction between the chaff and the roller shell (roller shell) and its manufacturing apparatus To provide.

In addition, another object of the present invention is to provide a method of producing a chaff chaff to increase the chaff absorption rate to improve the productivity of the overall chaff chakbu by forming hundreds of extruded spheres in the ring form and discharged.

In addition, another object of the present invention is to minimize the phenomenon that the chaff generated during the swelling process of the swelling device passing through the conventional conical casing is ground into fine powder or brown color changes to ensure the overall reliability of the product To provide a chaff chaff production method and apparatus for improving the chaff absorption to maximize the satisfaction and satisfaction.

In order to achieve the object of the present invention, chaff chaff production method for improving the chaff absorption rate is added to the chaff added to the hopper and stirred for a certain time by adding a certain amount of water, and mixed with water in the raw chaff raw material A step of conveying through the feeding screw, the chaff conveyed through the raw material feeding screw to the expansion die, and the chaff supplied to the expansion die is discharged through the extrusion port by the roller cell to expand The step of softening, and the chaff bulge in the above step is to dismantle the agglomerated part in the swelling process and to uniformize the particle size and then packaging.

Thus, in the step of adding a constant water to the chaff and stirring for a predetermined time, the water added to the chaff is 50 ~ 80% (w / w), the stirring time is made of 10 minutes.

The chaff supplied to the swelling die is discharged through the extrusion port by the roller cell and swelled so that the rice husk is swelled with respect to the chaff discharged through the extrusion hole of the swelling die. In order to generate the chaff and the friction of the roller cell, the friction heat with the roller cell by the rotational drive of the swelling die is used to generate friction heat 100 ~ 200 ℃.

On the other hand, the expanded chaff production apparatus for improving the chaff absorption rate according to the present invention is a hopper for storing by inputting the chaff or storing the chaff added with water (moisture) to the chaff, and a raw material for transferring the chaff stored in the hopper The rice husk is squeezed by an injection screw, a raw material feeding motor for driving the raw material feeding screw, a bulging die for discharging the chaff conveyed by the raw material feeding screw through an extrusion port, and an extrusion hole of the swelling die. It consists of a roller cell for extruding the chaff to soften, a drive motor for rotating the expansion die and a discharge port for discharging the expanded chaff to the outside through the extrusion port of the expansion die; will be.

Thus, the extrusion port of the expansion die is 12 ~ 16mm in diameter, the length is made of 70 ~ 130mm.

In addition, the upper end of the hopper is provided with a water supply valve for supplying water to the rice hull is not added to the water stored in the hopper.

The present invention carried out as described above has the effect that the water contained in the chaff during compression is depressurized at the moment of being discharged from the extruder in a state of being trapped in the extruder in a vapor state to achieve swelling.

In addition, the present invention uses the frictional heat generated by the friction between the chaff and the roller shell (roller shell) as an heat source there is an effect that does not require a separate thermal energy.

In addition, in the present invention, the expansion device passing through the conventional conical casing has only one extrusion port, while the productivity is low, while the hundreds of extrusion holes may be formed and discharged in the ring shape, so that the overall chaff chaff This has the effect of improving the productivity.

In addition, the present invention can minimize the phenomenon that the chaff generated during the swelling process of the swelling device passing through the conventional conical casing is ground into fine powder or brown color change, so as to reduce the reliability of the product to the swelling chaff as a whole Satisfaction is maximized.

Figure 1 is a photograph showing an embodiment to explain the apparatus for producing a chaff chaff to enhance the chaff absorption rate according to the present invention.
Fig. 2 is an exemplary embodiment for explaining the swelling principle implemented by the present invention.
3 is a picture showing an embodiment for showing a swelling die and a load cell according to the present invention.
Figure 4 is an implementation photograph for showing the process of expanding through the extrusion port of the expansion die carried out by the present invention.
Figure 5 (a) is a photograph showing an untreated chaff, (b) is a photograph showing a conventional chaff chaff, and (c) is a photograph showing a chaff chaff according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art, and the following embodiments may be modified in many different forms, the scope of the present invention It is not limited to the following embodiments. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing embodiments of the present invention. In the drawings, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, embodiments of the present invention should not be construed as limited to the specific shapes of the regions shown herein, but should include, for example, changes in shape resulting from manufacturing.

First, Figure 1 shown in the accompanying drawings is a photograph showing an embodiment to explain the expanded chaff manufacturing apparatus for improving the chaff absorption rate carried out in accordance with the present invention, Figure 2 illustrates the bulking principle carried out by the present invention Figure 3 is an embodiment configuration for showing a swelling die and a load cell according to the present invention, Figure 4 is a process of swelling through the extrusion port of the swelling die carried out by the present invention This is an implementation picture to show.

And, Figure 5 (a) is a photograph showing an untreated chaff, (b) is a photograph showing a conventional chaff chaff, and (c) is a photograph showing a chaff chaff according to the present invention.

Thus, with reference to the accompanying drawings will be described with respect to chaff chaff production method and apparatus for improving the chaff absorption rate according to the present invention.

That is, the hopper 10 may be stored only by charging the chaff, or by adding water (moisture) to the chaff through a separate stirrer (not shown), stirring and storing.

If only the chaff is added to the hopper 10 is not added water, the water must be supplied separately, in this case water (water) through the water supply valve 70 provided at the upper end of the hopper 10 ) Can be supplied.

As mentioned above, it is preferable to add 50-80% (w / w) of water to the chaff, that is, chaff and water, and stir for 10 minutes.

For example, when the rice husk is 1kg, water is added by stirring about 500-800g.

Here, when adding and mixing less than 50% of water, there is a problem in that the amount of steam generation is insufficient and it is discharged as a pellet without being expanded. In case of adding water by 80% or more, chaff structure is maintained. There is a problem that the swelling is not done properly is discharged with one.

In addition, when the stirring time is less than 10 minutes, the stirring is not performed properly, so that the stirring is performed for 10 minutes or more, and in particular, stirring for only 10 minutes is preferable in terms of productivity.

The chaff added with water is stored in the hopper 10, and at this time, the chaff mixed with water is fed through the raw material injection screw 20 provided at the lower end of the hopper 10 to be transported.

The raw material input screw 20 is driven by the raw material input motor 30, which is connected to one side of the raw material input screw 20 to enable efficient driving.

The chaff conveyed through the raw material input screw 20 is supplied to the expansion die 40, wherein the expansion die 40 is driven to rotate by the drive motor (50).

The swelling die 40 is provided with dozens to hundreds of extruded holes 41, which can be expanded by causing the chaff conveyed by the raw material input screw 20 to be discharged.

To this end, when the chaff is supplied to the swelling die 40, the swelling die 40 is driven to rotate, at this time by the extrusion of the roller cell 90 chaff through the dozens to hundreds of extrusion holes 41 As it is discharged, dilation is achieved.

The expanded chaff through the extrusion port 41 of the upper die sintering die 40 is to be discharged to the outside through the discharge port (60).

The bulge chaff discharged through the outlet 60 is dismantled for the agglomerated portion in the swelling process and uniformity of the particle size and then packaged by the desired amount to complete the manufacture.

Here, the moisture can be adjusted according to the use of the chaff expanded by the extrusion port 41 of the swelling die 40, which can be adjusted in the dryer (not shown), For example, 30% of moisture can be adjusted to around 20%.

In order to achieve efficient swelling through the extrusion hole 41 of the expansion die 40 according to the present invention, the diameter of the extrusion hole 41 is preferably 12 to 16mm, length of 70 to 130mm.

That is, when the diameter of the extrusion port 41 is smaller than 12 mm, chaff input speed delay and grinding occur in the extrusion hole, and when the diameter is larger than 16 mm, there is a problem that the expansion is insufficient.

In addition, when the length of the extrusion hole 41 is less than 70mm, the swelling is insufficient, and when larger than 130mm, clogging occurs without being discharged due to the increase in frictional force.

In particular, in order to be able to swell the chaff discharged through the extrusion port 41 of the swelling die 40, water vapor must be generated, a heat source having a constant temperature must be generated to generate this water vapor. do.

The heat source having a constant temperature is preferably made of 100 ~ 200 ℃, the generation of the heat source and the roller cell 90 by the friction of the chaff and the roller cell 90, and the rotation drive of the swelling die 40 and Friction heat is generated through the friction of the heat source can be easily generated, so no additional input of heat energy.

Unexplained reference numeral 80 is a conveying conveyor, which is an equipment for easily transferring the chaff raw material so that the chaff into the hopper 10 can be easily put.

Table 1 shows the results of the change of absorption rate by the experimental measurement of the white rice, untreated rice husk, the traditional rice husk chaff and the rice chaff according to the present invention.

In other words, after using the hot-air dryer until the weight change for each of the white rice, untreated chaff, the traditional chaff chaff and the chaff chaff according to the present invention, and then filled with 10g each in a 250ml beaker, Each was immersed in water of about 40g and left to stand for 24 hours.

After 24 hours, the water was filtered at normal pressure using a filter, and the weight of each of the rice hulls which had absorbed water was measured. The weight of water was calculated by giving the weight of rice husk.

Absorption rate (%) = weight of water absorbed by the rice hull / weight of the rice hull added × 100

division Cypress Sawdust Untreated chaff
(See Figure 5A) Bulrush chaff
(See Figure 5b) Buffed chaff according to the present invention
(See Figure 5c) Absorption rate (%) 287 207 237 310

Absorption rate is the water absorption weight compared to the completely dried chaff (water absorption weight / chaff weight).

As shown in Table 1 above, the chaff chaff according to the present invention can be seen that the remarkably improved in the water absorption than cypress sawdust, untreated chaff and chaff chaff conventionally practiced.

As described above, specific embodiments of the present invention have been described, but it is obvious that various embodiments can be modified without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

In other words, the foregoing embodiments are to be understood in all respects as illustrative and not restrictive, the scope of the invention being indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be construed as being included in the scope of the present invention.

10: Hopper
20: Raw material input screw
30: raw material input motor
40: dilatation die
41: extrusion hole
50: drive motor
60 outlet
70: water supply valve
80: conveying conveyor
90: roller cell

Claims (4)

Adding a certain amount of water to the chaff added to the hopper and stirring for a predetermined time;
The step of transferring the stirred rice husk mixed with water through the raw material input screw;
Supplying the chaff conveyed through the raw material feeding screw to the expansion die;
Discharging the rice husk supplied to the swelling die through the extrusion port by the roller cell to swell;
Dismantling the swollen rice hull in the swelling process, uniformizing the particle size, and then packaging the swollen rice hull;
Buffet chaff production method to improve the chaff absorption rate, characterized in that consisting of.
The method of claim 1,
In the step of adding a constant water to the chaff and stirring for a predetermined time,
The water added to the rice husk is 50 to 80% (w / w), the stirring time is 10 minutes to enhance the chaff uptake, characterized in that the chaff uptake.
A hopper for storing and adding chaff or storing chaff added with water (moisture) to the chaff;
Raw material input screw for transferring the chaff stored in the hopper,
A raw material input motor for driving the raw material input screw;
A swelling die for discharging the chaff conveyed by the raw material injection screw through an extrusion hole;
A roller cell for extruding the rice hull so as to swell the rice hull with the extrusion port of the expansion die;
A drive motor for driving the expansion die in rotation;
An apparatus for preparing chaff chaff, which is made up of an outlet for discharging the chaff expanded to the outside through the extrusion port of the swelling die.
The method of claim 3,
The extrusion port of the swelling die has a diameter of 12 ~ 16mm, the expanded chaff production apparatus for improving the rice husk absorption, characterized in that consisting of 70 ~ 130mm in length.

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