JP2003170066A - Method and apparatus for polishing beans - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To certainly remove a stain from the surfaces of beans even if beans are severely stained. <P>SOLUTION: Stirring blades 4 for polishing beans while stirring and feeding beans mixed with a polishing material are arranged in a polishing cylinder 3 having a hopper 5 to be a charging port at one end thereof and a discharge port 6 at the other end thereof and an opening degree adjusting mechanism 21 for adjusting the opening degree of the discharge part 6 is provided to the discharge part 6 while a polishing material separator 8 for separating beans after polishing from the polishing material is provided on the downstream side of the discharge part 6. When the surfaces of beans are severely stained, the opening degree of the discharge part 6 is narrowed by the opening degree adjusting mechanism 21 not only to increase the density of the beans mixed with the polishing material in the polishing cylinder 3 but also to raise the frictional pressure applied to the beans mixed with the polishing material. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for polishing beans, which comprises polishing and removing dirt adhering to the surface of beans while stirring and transporting beans such as soybeans and abrasives such as rice husks, bran powder, and plant crushed particles. And a polishing device.

[0002]

[Background Art] Beans such as soybeans may have dirt such as soil and stalk juice attached to the surface at the time of harvesting, and if they are shipped as they are, they will be ranked as poor quality. The dirt is removed. As a polishing device of this kind, in a horizontal polishing cylinder having a charging port at one end and a discharging port at the other end, the beans and the polishing material such as rice husks, bran powder, and plant crushed particles are charged into the polishing cylinder. A stirring blade for polishing the surface of beans with an abrasive while agitating and transporting is provided, and the beans and the abrasive put into the polishing cylinder are supplied with wet air containing water such as mist or steam to produce beans. Increase the water content of the surface to about 30%, remove the dirt on the beans surface by friction with the abrasive due to the stirring action while softening the beans surface, and remove the abrasive with the mesh-shaped sorting part formed on the peripheral wall of the polishing cylinder. There is one that sorts and separates (see, for example, Patent Document 1).

In addition, with substantially the same structure as described above, the beans and the abrasive are stirred and conveyed by the stirring blade without adding water, and the dirt on the surface of the beans is removed by friction with the abrasive due to the stirring action. There is one in which an abrasive material is selectively separated by a net-shaped selecting portion formed on the peripheral wall of the polishing cylinder on the outlet side (see, for example, Patent Document 2).

[0004]

[Patent Document 1] JP-A-56-100642 (second
(Page, Figure 1)

[0005]

[Patent Document 2] Japanese Patent Laid-Open No. 2-107345 (second to second)
(Page 4, Figure 1, Figure 2)

[0006]

However, in the above structure, since the frictional force between the beans and the abrasive is weak, the abrasive is sufficiently pressed against the surface of the beans when the dirt adhering to the surface of the beans is severe. However, there is a problem in that dirt cannot be easily removed and polishing processing takes time. Further, in the former polishing apparatus, the moisture absorbed on the surface of the legume causes small wrinkles, resulting in deterioration of quality.

Therefore, an object of the present invention is to provide a legume polishing apparatus capable of surely removing the stain even when the stain is severe by performing the polishing according to the degree of stain of the legume.

[0008]

In order to achieve the above object, the method for polishing beans according to the present invention comprises a polishing cylinder in which a stirring blade is arranged, and rice, which has dirt on its surface, is husks, bran powder, After the abrasive-mixed beans mixed with an abrasive such as crushed plant particles are put in, and while the abrasive-mixed beans are being stirred and conveyed by the agitating blade, the surface of the beans is rubbed and polished to remove dirt. In the method for polishing beans that separates abrasives, in accordance with the degree of soiling of the beans, the density of the abrasives mixed beans in the polishing cylinder is adjusted to change the friction pressure between the abrasives and the beans. It has a feature. Corresponding to the degree of soiling of the beans, the mixing ratio of the beans and the abrasive is changed, and the beans are rubbed with each other while the beans separated from the abrasive are conveyed while being agitated, so that the beans surface is rubbed. It is preferable to give gloss.

In addition, the polishing apparatus agitates the beans and the abrasives such as rice husks, bran powder, and plant crushed grains in a polishing cylinder having an inlet at one end and an outlet at the other end. In a legume polishing apparatus having a stirring blade for polishing beans while being conveyed, the discharge port is provided with an opening degree adjusting mechanism for adjusting the opening degree of the discharge port, and downstream of the discharge port after polishing. What is characterized by being provided with an abrasive separating device for separating beans and abrasives, and a horizontally placed one having an inlet at one end and an outlet at the other end and a net-like portion formed on the outlet-side peripheral wall. A polishing cylinder and a stirring blade disposed inside the polishing cylinder are provided, and the beans and the abrasives such as rice husks, bran powder, and plant crushed particles that are put into the polishing cylinder are stirred and conveyed by the stirring blade. While polishing the beans while polishing the beans to sort and separate the abrasive from the beans polished in the mesh portion In the setting, on the discharge port side of the mesh portion, a stirring blade for rubbing the surface of the beans separated from the abrasive while stirring and transporting the beans to give a gloss to the surface of the beans is provided, and at the discharge port, the discharge port There is a feature that an opening adjustment mechanism for adjusting the opening is provided, and it is preferable that a plurality of projections in the axial direction are formed on the inner wall of the polishing cylinder.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the drawings. 1 to 8 show a first embodiment of the present invention. A polishing apparatus 1 includes a polishing cylinder 3 horizontally placed on an upper part of a pedestal 2 and an axial direction inside the polishing cylinder 3. And a rotating stirring blade 4. The polishing cylinder 3 is composed of three cylindrical bodies extending from the starting end side to the terminating end side. The starting end side first cylindrical portion 31 is provided with a charging hopper 5 and the first cylindrical portion. The second polishing cylindrical portion 32 is continuous with 31 and the third polishing cylindrical portion 33 is connected to the second polishing cylindrical portion 32 on the terminal side, and the discharge port 6 is formed below the terminal side wall surface 34. is doing. Second and third polishing cylindrical parts 3
A plurality of projections 35 extending in the axial direction are formed on the inner peripheral walls of 2, 33. A discharge hopper 7 is provided outside the discharge port 6, and an oscillating sieve-type abrasive material separator 8 is installed below the discharge hopper 7.

Above the charging hopper 5, a legume charging hopper 9 and an abrasive charging hopper 10 are provided. The beans feeding hopper 9 and the abrasive feeding hopper 10 are respectively provided at the bottom of the screw conveyor 1.
1 and 12, and by changing the number of rotations of the screw conveyors 11 and 12, it is possible to adjust the amount of beans and abrasives charged into the charging hopper 5, and thus the mixing ratio of beans and abrasives. Can be changed.

The stirring blade 4 is provided on a rotary shaft 13 which is erected in the axial direction of the polishing cylinder 3. The rotary shaft 13 is
The first cylindrical portion 31 is provided with the screw conveyor 14, and the stirring blades 4 are provided continuously to the screw conveyor 14 on the second polishing cylindrical portion 32 and the third polishing cylindrical portion 33. Also,
The rotary shaft 13 has a pulley 15 and rotates via a belt 18 suspended between the pulley 15 and an output shaft 17 of a motor 16 installed in the lower portion of the polishing cylinder 3.

The stirring blade 4 includes a first stirring blade 4a, a second stirring blade 4b, and a third stirring blade 4 arranged in the second polishing cylindrical portion 32.
c and the fourth stirring blade 4 arranged in the third polishing cylindrical portion 33.
d, fifth stirring blade 4e, sixth stirring blade 4f, and seventh stirring blade 4
g. These stirring blades 4a, 4b, 4
c, 4d, 4e, 4f, and 4g have the same structure, and the columns 42 and 42 are provided on the pair of bosses 41 and 41, respectively, and the columns 42 and 42 facing each other of the bosses 41 and 41 are slightly shifted in phase from each other. 41, 41 are fixedly mounted on the rotary shaft 13 with a space therebetween, and a stirring blade 43 is obliquely attached between the tips of the columns 42, 42 of the bosses 41, 41 facing each other. A slight gap is formed between the outer edge of the stirring blade 43 and the inner peripheral wall of the second polishing tubular portion 32 and the third polishing tubular portion 33. In addition, adjacent stirring blades 4a, 4b, 4c, 4d,
4e, 4f, and 4g have 9 stirring blades 43 and 43, respectively.
It is provided on the rotary shaft 13 with a 0 ° phase shift.

The inclination angle of the stirring blade 43 with respect to the axis of the rotary shaft 13 is related to the conveying speed of the abrasive mixed beans, and the smaller the angle, the more the polishing in the second polishing cylindrical portion 32 and the third polishing cylindrical portion 33. The residence time of the mixed bean beans is long, and the effect of removing dirt is high, but the processing time is long. Therefore,
As a result of the test conducted by the applicant, the inclination angle of the stirring blade 43 is set to 21 in this embodiment in view of the balance between the processing time and the stain removal.
It is set to every degree.

A mesh portion (not shown) having a finer diameter than the diameter of the legume is provided on the upper portion of the third polishing cylindrical portion 33, and the upper portion of the mesh portion is covered with a cover 19. The dust collecting port 20 is provided at 19 for collecting dust generated when the abrasive is separated and fine abrasive.

The discharge port 6 is a square hole formed in the lower part of the end side wall surface 34, and an opening degree adjusting mechanism 21 for adjusting the opening degree of the discharge port 6 is provided outside the discharge port 6. . The opening adjustment mechanism 21 includes a rectangular resistance plate 22 that closes the discharge port 6.
And an L-shaped resistance rod 23 for fixing the resistance plate 22 and rotatably suspending it between the both side walls 71 of the discharge hopper 7.
And a weight 24 slidably provided on the resistance rod 23.
It consists of and. The resistance rod 23 is the discharge hopper 7.
The resistance plate 2 on the short shaft 23a that is inserted through both side walls 71, 71 of the
2 is screwed and a weight 24 is slidably provided on the long shaft 23b. If the weight 24 is brought close to the discharge port 5, the resistance of closing the discharge port 6 of the resistance plate 22 is weak, and the weight 24 is discharged to the discharge port 6.
The resistance to block the discharge port 6 of the resistance plate 22 increases as the distance from the position increases.

In the abrasive separating device 8, the sieve 82 provided on the upper part of the hopper 81 is tilted obliquely and is swingably supported on the pedestal 2, and a belt 84 suspended between the swing motor 83 is used. An oscillating plate 86 is eccentrically provided on the axis of a rotating rotator 85, a rod 87 of the oscillating plate 86 is attached to a hopper 81, and the hopper 81 is oscillated by rotation of an oscillating motor 83. While the abrasive-mixed beans that have dropped onto the upper part of the sieve 82 are allowed to flow downward, the abrasive is dropped from the eyes of the sieve 82 to the hopper 81, and the beans from which the abrasive has been separated are provided at the lower end of the sieve 82. Eject from 88.

Next, a polishing method by the polishing apparatus 1 thus constructed will be described. First, put beans such as soybeans whose surface has dirt on the beans input hopper 9,
In addition, an abrasive material such as rice husk, bran powder, and plant crushed particles having a smaller water content than beans and a normal water content is put in the abrasive material feeding hopper 10. Then, beans are loaded into the loading hopper 5 from the beans loading hopper 9 to the screw conveyor 11 loading hopper 5, and the polishing material is loaded from the polishing material loading hopper 10 into the loading hopper 5 by the screw conveyor 12. The ratio of the beans to the abrasive is preferably about 1: 1 by volume, and if the stain is severe, the ratio of the abrasive may be increased.

The beans and the polishing material charged into the polishing cylinder 3 from the charging hopper 5 are rotated by the screw conveyor 14
Are mixed and conveyed to the stirring blade 4. The conveyed abrasive mixed beans are agitated and conveyed from the rotating first agitating blade 4a toward the seventh agitating blade 4g while the abrasive abrades the surface of the beans to remove dirt.

At this time, the abrasive mixed beans are not only agitated by each agitating blade, but also a little between the outer edge of the agitating blade 43 and the inner peripheral wall of the second abrading cylindrical portion 32 or the third abrading cylindrical portion 33. Being rotated by the stirring blade 43 in the gap, and
The second polishing tubular portion 32 and the third polishing tubular portion 33 are brought into contact with the axial protrusions 35 of the inner peripheral walls of the second polishing tubular portion 33, and the movement along the inner peripheral walls is regulated so that the abrasive is rotated. Strongly rubs the surface of beans.

When the surface of the legume is extremely dirty,
Move the weight 24 of the opening adjustment mechanism 21 away from the discharge port 6,
The resistance plate 22 strengthens the resistance to block the discharge port 6,
Of the second polishing cylindrical portion 32 and the third polishing tubular portion 32
By increasing the density of the abrasive mixture beans in the polishing cylindrical portion 33, the friction pressure applied to the abrasive mixture beans by the first stirring blade 4a to the seventh stirring blade 4g is increased. Alternatively, the rotation speed of the first stirring blade 4a to the seventh stirring blade 4g may be increased to press the abrasive material strongly against the surface of the legume.

The frictional pressure applied to the beans and the abrasive in the polishing cylinder 3 is determined by the synergistic effect of the amount conveyed from the screw conveyor 14 and the amount discharged by the opening adjustment mechanism 21 provided at the discharge port 6, so that the friction pressure is opened. The density adjusting mechanism 21 controls the densities of the beans and the abrasive in the polishing cylinder 3 to prevent quality deterioration such as cracking of the beans. The control of the friction pressure is determined by the current value of the motor 16.

The abrasive-mixed beans discharged from the discharge port 6 after the removal of the dirt are separated into beans and abrasive by the abrasive separator 8, and the beans discharged from the discharge port 88 are packed into a bag. Proceeding to the next step such as the above, the abrasives dropped to the hopper 81 are reused.

In this way, by controlling the density of the beans and the abrasive in the polishing cylinder 3 and performing the polishing according to the degree of soiling of the beans, it is possible to reliably remove the soil even when the soil is severe. it can. In addition, since beans and abrasives can be continuously added and continuously processed, a large amount of processing per unit time is obtained.

In the above embodiment, the screw conveyor 14 for mixing the beans and the abrasive, and the first stirring blade 4a to the seventh stirring blade 4g for stirring and carrying the beans mixed with the polishing material are provided on the same rotary shaft 13. Since each step can be continuously processed by providing the polishing apparatus 1, the polishing apparatus 1 can be made compact, but the screw conveyor 14 and the first stirring blade 4a to the seventh stirring blade 4g are divided into separate units. It is provided on another rotating shaft and distributed in two stages, and the first stirring blade 4
It is also possible to divide the seventh stirring blade 4g from a and arrange it in three stages.

FIG. 9 shows a second embodiment, and the same elements as those in the first embodiment will be described with the same reference numerals. The polishing apparatus 1 of the present embodiment has a third polishing cylindrical portion 3
The peripheral wall of No. 3 has a mesh shape smaller than the diameter of pulses, and is abraded from the mesh in the stirring and conveying process by the fourth stirring blade 4d and the fifth stirring blade 4e arranged in the first half portion of the third polishing cylindrical portion 33. The material is removed from the polishing cylinder 3.

The periphery of the third polishing cylindrical portion 33 is covered by the cover 2.
5, the lower portion of the cover 25 serves as a hopper 26 for the abrasive material that is sorted and separated by the third polishing cylindrical portion 33, and the upper portion thereof is dust and dirt generated when the abrasive material is separated. A dust collecting port 20 is provided for collecting fine abrasives. An opening degree adjusting mechanism 21 similar to that of the first embodiment is provided outside the discharge port 6.

This polishing apparatus 1 comprises a rotating first stirring blade 4
In the process of sequentially stirring and conveying from a through the third stirring blade 4c,
The polishing material rubs the surface of the beans to remove dirt, and the polishing material is removed by the fourth stirring blade 4d and the fifth stirring blade 4e, and the beans transported to the sixth stirring blade 4f and the seventh stirring blade 4g are separated from each other. , The sixth agitating blade 4f and the seventh agitating blade 4g are agitated and conveyed, so that fine friction scratches on the surface of the legume are erased by friction between the legumes, and the surface of the legume is given a luster to make it glossy.
In these processes, the frictional pressure applied to the beans is adjusted by adjusting the opening degree of the discharge port 6 by the opening degree adjusting mechanism 21 provided in the discharge port 6 as in the first embodiment. This is performed by changing the density or increasing the rotation speed of the first stirring blade 4a to the seventh stirring blade 4g.

As described above, since the surface of the beans from which stains have been removed is given a luster to make it glossy, it is possible to provide high-quality beans without any fine scratches or small wrinkles on the surface of the beans. In addition, the first stirring blade 4a to the third stirring blade 4 that remove dirt
c, 4th stirring blade 4d and 5th stirring blade 4 for removing abrasives
e and the sixth stirring blade 4f and the seventh stirring blade 4g that give the surface of the beans a luster are provided on the same rotary shaft 13 and each step can be continuously processed, so that the polishing apparatus 1 can be made compact. it can. Furthermore, it is also possible to divide each stirring blade according to its function and provide it on different rotary shafts, respectively, and distribute and arrange it in two or three stages.

[0030]

As described above, according to the present invention, the density of the abrasive mixed beans in the polishing cylinder is adjusted according to the degree of soiling of the beans, and the friction pressure between the abrasive and the beans is changed. By polishing, the dirt can be surely removed even when the dirt attached to the legume surface is severe. Further, since beans and abrasives can be continuously added and continuously processed, the processing amount per unit time is large. Furthermore, the beans are rubbed against each other by stirring the beans that have had their stains removed by an abrasive to give the beans a glossy surface, so the beans have high-quality beans without fine scratches or wrinkles. can do.

[Brief description of drawings]

FIG. 1 is a sectional view of a polishing apparatus according to a first embodiment.

FIG. 2 is a side view of the opening adjustment mechanism.

FIG. 3 is a plan view of an opening adjustment mechanism.

FIG. 4 is a front view of the opening adjustment mechanism.

5 is a sectional view taken along line VV of FIG.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is an enlarged view of a second polishing cylindrical portion.

FIG. 8 is a side view of the same polishing device.

FIG. 9 is a sectional view of a polishing apparatus according to a second embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Polishing device, 3 ... Polishing cylinder, 4 ... Stirring blade, 4a ... 1st stirring blade, 4b ... 2nd stirring blade, 4c ... 3rd stirring blade, 4d ... 4th stirring blade, 4e ... 5th stirring blade, 4f ... 6th stirring blade, 4g
... 7th stirring blade, 5 ... Input hopper, 6 ... Discharge port, 7 ...
Discharge hopper, 8 ... Abrasive material separator, 13 ... Rotating shaft, 1
4 ... Screw conveyor, 21 ... Opening degree adjusting mechanism, 22 ...
Resistance plate, 23 ... Resistance rod, 24 ... Weight

Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B02B 7/02 109 B02B 7/02 109 (72) Inventor Katsumi Yajima 1-1 Sanbonmatsucho, Atsuta-ku, Nagoya, Aichi Japan Vehicle Manufacturing Co., Ltd. F term (reference) 4B020 LC01 LG01 LP01 LP30 4D043 AA07 DA06 DB10 DL06 DL08 DL10 JB01 JE07

Claims (6)

[Claims] 1. An abrasive-mixed bean containing a mixture of beans having dirt on its surface and an abrasive such as rice husks, bran powder, and plant crushed grains, is put into a polishing cylinder having a stirring blade, and the abrasive is used. In the method for polishing beans, in which the beans are rubbed while being conveyed by stirring with the stirring blade to remove the dirt by polishing the surface of the beans, the abrasive is separated according to the degree of dirt of the beans. A method for polishing beans, wherein the density of the beans mixed with the abrasive in the polishing cylinder is adjusted to change the friction pressure between the abrasive and the beans. 2. The method for polishing beans, according to claim 1, wherein the mixing ratio of the beans and the abrasive is changed in accordance with the degree of soiling of the beans. 3. The method for polishing beans according to claim 1, wherein the beans are rubbed on the surfaces of the beans while stirring and conveying the beans separated from each other to give the beans a glossy surface. 4. Beans while agitating and transporting the beans and the abrasives such as rice husks, bran powder, and plant crushed grains, which are put into the polishing cylinder, into a polishing cylinder having an inlet at one end and an outlet at the other end. In a legume polishing apparatus provided with a stirring blade for polishing, the outlet is provided with an opening adjustment mechanism for adjusting the opening of the outlet, and the beans and the abrasive after polishing are provided downstream of the outlet. An apparatus for polishing beans, which is provided with an abrasive material separating device for separating the material from each other. 5. A horizontal polishing cylinder having a charging port at one end and a discharging port at the other end, and a net-like portion formed on a peripheral wall on the discharging port side, and a stirring blade arranged in the polishing cylinder. While agitating and transporting the beans and the abrasives such as rice husks, bran powder, and plant crushed particles that have been put into the polishing cylinder with the agitating blade, the beans are abraded while the beans are abraded by the mesh portion. In a bean polishing device for selecting and separating materials, on the discharge port side of the mesh portion, while agitating and conveying the beans from which the abrasive is separated, a stirring blade that rubs the surface to give a gloss to the bean surface is provided, A legume polishing apparatus, wherein an opening adjusting mechanism for adjusting the opening of the outlet is provided at the outlet. 6. The inner wall of the polishing cylinder is formed with a plurality of protrusions in the axial direction.
The bean polishing apparatus described in 1.