JP2000317321A - Rice mill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain excellent polished rice which is free from uneven polishing by a method wherein a bran container is provided in a container body, a bran-removing net basket is provided in the bran container, a stirring body pivoting horizontally together with a rotary shaft is provided in the bran-removing net basket, and further a flow-straightening cylinder for partitioning a side face of the bran-removing net basket and the rotary shaft is provided in the bran-removing net basket. SOLUTION: A required amount of brown rice is contained in a bran-removing net basket 3, a pressure plate 7 is placed on each horizontal part 85, and the inside is closed by a fitting cover 6. Then, a rotary shaft 4 is rotated by a motor M, a headed roll 40 and an agitating blade 53 are cooperated, a brown rice group is allowed to pivot horizontally, and is combed up along an inclination of the agitating blade 53. Thereafter, a brown rice group is blown away to a side face side of the bran-removing net basket 3 by centrifugal force, the pressure plate 7 is raised up, the brown rice group is allowed to descend to the headed roll 40 side, and circulated. Milling operation is executed by mutual friction of the brown rice and friction of the brown rice with the bran-removing net basket 3 following such horizontal pivoting and circulation, and the bran is introduced into a bran receiver 2 from a network of the bran-removing net basket 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice milling machine that stirs brown rice in a bran-removing basket with a stirrer and grinds the brown rice by friction between the brown rice and the brown rice and the bran-removing basket.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 11 to 13, a bran collecting container 2 is detachably provided in a container main body 1, and a bran removing basket 3 is detachably provided in a bran collecting container 2 at intervals. A household rice milling machine in which a stirring body 5 including a rotating shaft 4 and a stirring blade 50 horizontally rotating through the rotating shaft 4 is provided in a basket 3 is known.

The stirring blade 50 of this conventional example is an elongated thin plate having a thickness L4 (shown in FIG. 13) of about 1 mm, and the remaining portion 52 is twisted while the inner end 51 of the stirring blade 50 is in a horizontal state. The rotation direction (indicated by arrows in FIGS. 12 and 13) is formed so as to be gradually inclined upward from the front side to the rear side, and the horizontal inner end 51 is the lower end diameter of the headed roll 40 cooperating with the rotation shaft 4. It is attached to the major part 41.

When the stirring blade 50 is rotated in the direction of the arrow in FIG. 12 by the electric motor (not shown) via the rotating shaft 4 and the headed roll 40, the brown rice in the bran basket 3 rotates in the same direction and is stirred. The blades 50 are lifted up by the blades 50 and circulate from the outer peripheral side to the inner core side due to centrifugal force as shown by a chain line arrow in FIG. 11. It is polished by friction of 3.

[0005] However, in this conventional example, as shown by a chain line arrow in FIG. 11, the circulation of rice grains is large or small, resulting in so-called uneven grinding. If these rices having different degrees of whiteness are cooked together, it is unsatisfactory and inconvenient.

Further, in the conventional example, the pressing force on the rice grains is insufficient only by closing the fitting lid 6 on the container body 1, and the degree of milling is low. Therefore, it is necessary to increase the degree of whitening by extending the whitening time. However, when the whitening time is long, the frictional heat increases, resulting in so-called hot rice. In particular, there is a large lack of pressing force when whitening a small amount of brown rice, as in the case where brown rice is present only up to the position indicated by the chain line h1, and even if the milling time is extended, only the friction is repeated without removing the bran layer. It is well known that this high-moisture rice has an unpleasant taste due to low friction and high whiteness due to empty friction.

[0007]

The first object of the present invention is as follows.
It is an object of the present invention to provide a polished rice which is not unevenly polished and has a uniform degree of polished rice so that it is possible to cook a good-tasting rice.

[0008] The invention of claim 2 is to prevent rice from being unevenly polished, to prevent the generation of rice bran, and to prevent the rice from becoming hot rice irrespective of the amount of whitening, so that rice with better taste can be cooked. The task is to

A third object of the present invention is to provide a good milling effect in which rice grains are circulated vigorously and the rice grains are brought into strong contact with a bran-removing basket, in addition to the objects of the first or second aspect of the present invention. .

Another object of the present invention is to improve the milling efficiency and to provide polished rice having a high degree of whitening in a short time in addition to the objects of the first or second aspect of the present invention.

A fifth object of the present invention is to provide, in addition to the object of the second aspect, a method of adjusting a pressing force in accordance with the amount of whitening to provide an optimum pressing force to a group of circulated brown rice.

[0012]

According to a first aspect of the present invention, there is provided a bran collecting container detachably provided in a container main body, and a bran collecting container is removed from the bran collecting container at intervals. A bran net basket is detachably provided, a rotating shaft and a stirring body which rotates horizontally via the rotating shaft are provided in the bran mesh basket, and a flow rectifier for separating a side surface of the bran mesh basket from the rotating shaft. It is characterized in that a tube is provided in the basket. In the claims of the present specification, the rice milling machine is intended to include both home rice mills and commercial rice mills.

If the stirrer is rotated here, the brown rice group in the basket is rotated in the rotation direction of the stirrer and circulated from the side of the basket to the rotating shaft by centrifugal force. It is milled by the friction between brown rice and the friction between brown rice and the bran basket. At this time, the rice grains are blocked by the flow regulating cylinder,
As shown by the arrow in the figure, the air does not make a small turn but circulates at a constant flow through the upper end, inside the cylinder, and the lower end of the flow straightening cylinder, thereby eliminating uneven polishing.

According to a second aspect of the present invention, the bran collecting container is detachably provided in the container body, and the bran removing basket is removably provided in the bran collecting container at intervals. Providing a stirring body that horizontally rotates through the rotation shaft and the rotation shaft in the basket,
A rectifying cylinder for partitioning a side surface of the bran mesh basket and the rotation shaft is provided in the bran mesh basket, and a pressure plate for pressing rice grains circulating in the bran mesh basket is further provided. I do.

If the pressing plate is positioned above the brown rice group, the circulating rice grains are agitated while lifting the pressing plate in addition to the function of the above-mentioned claim 1, and the pressure between the rice grains is increased by the pressing of the pressing plate. It becomes dense, the contact friction between brown rice and brown rice and bran basket increases, and the grinding accuracy improves.Moreover, by improving the grinding accuracy, it is possible to prolong the milling time and prevent the occurrence of empty friction. Rice can be prevented.

According to a third aspect of the present invention, the stirring body is a stirring blade made of an elongated plate that is gradually inclined upward from the front side to the rear side in the rotation direction, and the stirring blade is below the lower end opening of the rectifying cylinder. And the outer end of the stirring blade is preferably extended outward of the rectifying cylinder. By doing so, the rice grains are vigorously scraped up and circulated, and come into strong contact with the bran-removing basket, the frictional force is large, and the polishing accuracy is improved.

Further, the stirring member is a stirring blade made of an elongated plate which is gradually inclined downward from the front side to the rear side in the rotation direction, and the stirring blade is located at a lower part in the rectifying cylinder. It is preferable that a bottom portion of the bran-removing basket, which is located and faces the stirring blade, is formed on the plate surface.

In this case, the rice grains are pressed against the bottom plate surface of the bran basket by the lower surface of the stirring blade, and the stirring blade receives the weight of the falling brown rice group in the straightening cylinder. The pressure increases, and the milling efficiency is further improved.

Further, it is preferable that the pressure plate is adjustable in weight as in the invention of claim 5. The smaller the amount of rice, the coarser the grain between the grains during circulation, and the greater the quantity, the denser the grain. Therefore, by adjusting the weight of the pressure plate in accordance with the amount of rice, for example, the weight of the pressure plate is increased when the amount is small and the weight is decreased when the amount is large.

[0020]

FIG. 1 to FIG. 10 show a rice mill according to the present invention or components thereof, which are examples applied to a household rice mill. First, the first embodiment will be described with reference to FIGS. This will be described below. A plastic container main body 1 is formed in a cylindrical shape with a bottom, a gap 10 and a shaft insertion hole 11 are formed in the center of the bottom, and a jetty 12 is provided on the upper surface.
4 are provided with a plurality of rotation stopping holes 13
The rotation shaft 15 of the electric motor M fixed to the shaft is inserted into the shaft insertion hole 11 to connect the end of the rotation shaft 15 to the toothed disk 16. If a suitable rotation speed can be obtained, the toothed disk 16 may be directly connected to the rotating shaft 15 of the electric motor M as in the present embodiment, or a reduction motor may be used instead of the electric motor M, or Needless to say, the rotating shaft 15 and the toothed disk 16 may be linked via a reduction gear.

A plastic bran collecting container 2 having a flange 20 formed at the opening end and a cylindrical portion 21 provided at the center of the bottom plate is removably fitted to the container main body 1, and the flange 20 is brought into contact with the inner upper surface 14. Pins 23, 23 projecting downward from 20 are fitted into the rotation stopping holes 13, 13, and the cylindrical portion 21 is extrapolated into the toothed disk 16.

The bran-removing net basket 3 is formed of a metal, specifically, a stainless steel net. More specifically, the center of the bottom is formed of a disc 30 made of metal, for example, stainless steel.
A boss 31 is projected from the upper surface and a cylindrical portion 32 is projected from the lower surface of the disc 30 to fix the net bottom of the basket 3 to the peripheral surface of the disc 30. Specifically, it is fixed to a cylindrical mouth portion 33 made of stainless steel, a flange 34 is formed in the cylindrical mouth portion 33, and a plurality of pins 3 are provided on the lower surface of the flange 34.
5, 35 are protruded.

A plastic rotary shaft 4 is mounted on the toothed disk 44.
Concatenate. The rotating shaft 4 has a cross section of a regular hexagon and a lower end portion 42 of a circular cross section. Then, the rotary shaft 4 is passed through the boss 31 from inside the cylindrical portion 32 to thereby make the disk 30
Then, the lower end portion 42 is rotatably inserted into the boss 31, and the toothed disk 44 is housed in the cylindrical portion 32. Bran net basket 3
Are placed at concentric positions in the bran collecting container 2 at intervals, and the flange 34 is brought into contact with the
Each of the pins 35 is fitted into the pin insertion hole 24 provided in the cylindrical portion 32, the cylindrical portion 32 is externally fitted to the cylindrical portion 21, and the toothed disk 44 is engaged with the toothed disk 16. Each pin 2 to each rotation stop hole 13
The insertion of the pins 3 into the pin insertion holes 24 prevents the horizontal rotation of the bran collecting container 2 and the basket 3.

A large-diameter lower end portion 41 is formed in a headed roll 40 made of plastic, and a gap 45 is formed in the large-diameter lower end portion 41 and a regular hexagonal cross section communicating with the gap 45 is inserted into the headed roll 40. A hole 43 is formed, and as shown in FIGS. 1 and 2, stirring blades 53 composed of a pair of left and right elongated plates are fixed as the stirring member 5 to the large diameter portion 41 at the lower end. Each stirring blade 5
3, 53 are formed in a convex arc shape in the outer end width direction a, specifically, in a semicircle having a radius of １ ／ of the plate width, and in a straight state without twisting each stirring blade 53, Moreover, the blades are gradually inclined upward from the front side to the rear side in the rotation direction indicated by arrows in FIGS. 2 and 3, and the inner end of the blade is fixed to the large-diameter lower end portion 41 by insert molding. The plate thickness L2 is larger than the major axis L1 of the brown rice grains, preferably, the major axis L1 is set to 6 mm to 15 mm for brown rice grains having a major axis of about 5 mm, and the peripheral surface of each stirring blade 53, that is, End face 53a, both side faces 53
b and 53b are convex-arc-shaped rice sliding surfaces 5 as shown in FIGS.
4 is formed. The rice sliding surface 54 is a semi-circular convex surface having a radius r1 larger than 1/2 of the major axis L1 of the brown rice grains (indicated by L3 in FIG. 4), and preferably has a radius r1 of 3 mm to 7.5.
mm. Then, the fitting hole 43 of the same shape is externally fitted to the rotary shaft 4 having a hexagonal cross section, and the lower surface of the large-diameter lower end portion 41 is brought into contact with the upper surface of the disk 30. Here is the insertion hole 4
The rotating shaft 4 does not run idle in 3 and the rotating shaft 4, the headed roller 40, and the stirring blades 53 cooperate.

When viewed from a plane, a circular metal, specifically, a stainless steel cylinder 80 is wound with the opening upper end 81 inside and the opening lower end 82 outside to form a rectifying cylinder 8 with each opening end being round. The lower ends 84 of the three equally-suspended metal, specifically stainless steel, suspension bands 83, 83, 83 are opened at the upper ends 8.
1 is fixed to the inner surface by welding. Each suspension band 83 has a horizontal portion 85 and a rising portion 8 in order from the lower end 84 upward.
6. The horizontal upper end part 87 is formed by bending it continuously.
The rectifying cylinder 8 is extrapolated to the headed roll 40 and each horizontal upper end portion 87 is suspended by abutting on the flange 34, and the rectifying cylinder 8 is fitted to the side surface of the bran basket 3 and the rotating shaft 4. The opening lower end 82 of the flow regulating cylinder 8 is located at a distance above the stirring blades 53, 53, and the outer end of each stirring blade 53 is located outward of the flow regulating cylinder 8. Extend.

In the first embodiment, the fitting lid 6 is provided so as to be able to be fitted to and detached from the jetty 12, and further comprises a pressing plate 7 for pressing the rice grains circulating in the basket 3. The pressing plate 7 is made of a metal, specifically, stainless steel and formed in a mountain shape annular shape. As shown in FIG.
The weight is adjusted by using the pressurizing plate 7 which is composed of four types of joint use, two use one use, and one use one. The stainless steel pressure plate 7
It is preferable that the bottom surface is mirror-finished, so that the rice grains can slide smoothly and the rice grains can easily circulate, and the bottom surface of each pressing plate 7 is at least large enough to allow the circulating rice grains to collide. I just need.

FIG. 5 shows the pressing plate 7 according to the first embodiment.
This shows a state in which the modified example is used, in which three concentric grooves 71, 72, 73 are formed on the inclined surface of the pressing plate 7 and fitting rings 74, 75, 76 are fitted thereto. If the amount of rice is one, the fitting rings 74 and 7
5 and 76;
In the case of the case, the fitting ring 76 is fitted in the corresponding concentric grooves 71, 72, 73, and in the case of the case of 4 cases, the weight is adjusted by not using the fitting ring. This is the same as the first embodiment, and the same parts are denoted by the same reference numerals, and the description thereof will not be repeated.

FIGS. 7 to 9 show a second embodiment, which is equivalent in principle to the first embodiment. The same reference numerals are given to the common parts, so that duplicate explanations are omitted. Hereinafter, the differences will be described. In this embodiment, the stirring blades 53 in the first embodiment are shortened, the diameter of the flow straightening tube 8 is increased, and the lower opening 82 is extended downward so that each stirring blade 53 is located below the flow straightening tube 8. In addition, each stirring blade 53 is gradually inclined downward from the front side to the rear side in the rotation direction, and the disk 30 is made larger in diameter than in the first embodiment so as to face each stirring blade 53. It was done.

FIG. 10 shows a state in which a modified example of the pressing plate 7 in the second embodiment is used, which is the same as the modified example of the pressing plate 7 in the first embodiment, and other parts. Is the same as that of the second embodiment, and the same reference numerals are given to the common parts, and redundant description will be omitted.

Next, the usage in the embodiment of the present invention will be described.
The operation will be described. In the figure, virtual lines h1, h2, h3, h4
Indicates the uppermost position when brown rice is put in one, two, three or four, respectively. A desired amount of brown rice is put in the bran basket 3, and the pressing plate 7 is placed on each horizontal part 85. And closed with the fitting lid 6. When the uppermost position of the brown rice group exceeds the horizontal portion 85 as indicated by h4, the pressing plate 7 is placed directly on the upper surface of the brown rice group.

Thereafter, when the rotating shaft 4 is rotated via the electric motor M, the headed roll 40 and the stirring blades 53, 53 cooperate, and the brown rice group is horizontally rotated by the respective stirring blades 53. In the first embodiment and its modification, the brown rice group is scraped up because each stirring blade 53 is gradually inclined upward from the front side in the rotation direction to the rear side, and as shown in FIGS. The centrifugal force vigorously blows the ball to the side of the bran basket 3, then lifts the pressure plate 7, descends to the headed roll 40, and circulates. This horizontal rotation and the friction between the brown rice and the friction between the brown rice and the bran basket 3 during the circulation, the rice is milled, and the bran enters the bran collection container 2 from the mesh of the bran basket 3.

Further, in the case of the second embodiment and this modified example, since each stirring blade 53 is gradually inclined downward from the front side to the rear side in the rotational direction, the brown rice group is The disk 30 is formed by the inclined lower surface 53 '(shown in FIG. 9).
And the rice grains between the inclined lower surface 53 'and the disk 30 bear the weight of the brown rice group descending in the rectifying cylinder 8 through the respective stirring blades 53 located in the rectifying cylinder 8, and the pressure is reduced. Largely, the brown rice group is efficiently milled by the large frictional force here, and furthermore, is rotated in the horizontal direction, circulated in the directions of arrows shown in FIGS.
The bran is milled by the friction between the brown rice and the friction between the brown rice and the basket 3 and the bran enters the bran collection container 2 through the mesh of the basket 3.
In any of the embodiments, it is preferable that the electric motor M can be rotated forward and reverse. In this case, the rotation of the electric motor M is reversed so that the electric motor M can be rotated in the first embodiment and this modified example. As in the case of the second embodiment and this modified example, the milling action of rice grains between the lower surface of the stirring blade 53 and the disk 30 becomes possible, and conversely, the first embodiment in the second embodiment and this modified example. As in the case of this embodiment and this modified example, the stirring action by the stirring blade 53 becomes possible, and a desired use method can be selected.

Here, in any of the embodiments, since the circumferential surface of each stirring blade 53 is a convexly arcuate rice sliding surface 54,
The external force is not concentrated on the brown rice and the rice grains are not easily crushed.
3a, not only the rice sliding surface 54 of both side surfaces 53b, 53b, but also the rice grains in contact with the agitating blade 53 as shown in FIGS. Has a good sliding property and is harder to be crushed. Also, in any of the embodiments, since the pressing plate 7 has the pressing plate 7, the pressure between the brown rice groups makes the brown rice group dense, and the brown rice is in contact with the brown rice basket 3 Friction is increased, empty friction can be prevented, and milling accuracy is improved, so that milling time can be shortened and generation of hot rice can be prevented. A suitable pressing force can be applied by using a pressing plate 7 having a weight corresponding to the amount of brown rice, or by increasing or decreasing or not using a corresponding fitting ring. As described above, the outer end width direction a of each stirring blade 53 Is formed into a semicircle having a radius equal to 1/2 of the plate width, the plate thickness L2 of each stirring blade 53 is made larger than the major diameter L1 of the brown rice grain, and the radius r1 of the convex arc-shaped rice sliding surface 54 is set to the radius of the brown rice grain. When the length is larger than 1/2 of the major axis L1, the rice grains hitting these portions are surely not slid and crushed, and the outer end width direction a is used for a group of brown rice having a major axis L1 of about 5 mm. A semi-circular rice sliding surface 54 having a radius r1 of 3.5 mm was formed on a 7 mm-thick stirring blade 53 formed in a semi-circle having a radius equal to 1/2 of the width. It was confirmed that there was not.

In any of the embodiments and their modifications, the rectifying cylinder 8 is provided, so that the small round circulation of the brown rice group is prevented, and the brown rice group passes through the upper end, the inside, and the lower end of the rectifying cylinder 8. It circulates at a constant flow and a constant number of times, eliminating uneven grinding. It is needless to say that the rectifying cylinder 8 having a height at which the circulation by the flow is smoothly performed is used.

The pressing plate 7 may have another shape such as a donut shape, but is preferably a mountain-shaped ring. In this case, even if rice grains jump out onto the pressing plate 7, the rice grains slide down on the upper surface and are pressed down. 7, it is preferable to wind the upper end 81 of the flow straightening cylinder 8 inward and the lower end 82 thereof outward, so that the rice grains can be circulated smoothly and the opening and Crushing of rice grains at the ends 81 and 82 can be prevented.

After the refining is finished, first, the pressure plate 7 and the rectifying cylinder 8 are taken out from the bran basket 3, the bran basket 3 is taken out from the bran collection container 2, and the polished rice is taken out from the bran basket 3. Further, the bran collecting container 2 is taken out from the container main body 1, and the bran that has entered through the mesh of the bran removing basket 3 is taken out from the bran collecting container 2. In addition, it is preferable that the rectifying cylinder 8 is detachably provided to the bran-removing basket 3, so that the rice can be smoothly removed by previously removing the rectifying cylinder 8 from the bran-removing basket 3 as described above. Can be.

[0037]

According to the first aspect of the present invention,
It is possible to obtain a polished rice having no unevenness in milling degree without fear of uneven polishing.

According to the second aspect of the present invention, there is no possibility of uneven polishing, and it is possible to prevent the generation of hot rice irrespective of the amount of whitening, while preventing the occurrence of bran residue.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect, the rice grains are circulated vigorously, and the contact friction between the rice grains and the bran-removing net basket is increased, thereby improving the quality. The effect can be improved.

According to the invention of claim 4 of the present invention, in addition to the effect of the invention of claim 1 or 2, the milling efficiency is improved, and it is possible to provide polished rice having a high degree of blasting in a short time.

According to the fifth aspect of the present invention, in addition to the effect of the second aspect, it is possible to adjust the pressing force in accordance with the amount of whitening to give an optimum pressing force to the circulating brown rice group. it can.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view showing a first embodiment of the present invention.

FIG. 2 is a plan view with a part cut away from the above.

FIG. 3 is an enlarged longitudinal sectional side view of a main part of the above.

FIG. 4 is a partially enlarged end view taken along line AA in each embodiment of the present invention.

FIG. 5 is a longitudinal sectional front view showing a state in which a modification of the pressing plate according to the first embodiment of the present invention is used.

FIG. 6 is a plan view of a modification of the pressing plate in the above and second embodiments.

FIG. 7 is a longitudinal sectional front view showing a second embodiment of the present invention.

FIG. 8 is a plan view in which a part of the above is cut away.

FIG. 9 is a longitudinal sectional side view in which main parts of the above are enlarged.

FIG. 10 is a longitudinal sectional front view showing a state in which a modification of the pressing plate according to the second embodiment of the present invention is used.

FIG. 11 is a longitudinal sectional front view of a conventional example.

FIG. 12 is a plan view in which a part of the above is cut away.

FIG. 13 is an enlarged side view of the stirrer according to the third embodiment.

[Description of Signs] 1 container body 2 bran collecting container 3 bran removing basket 4 rotating shaft 5 stirrer 7 pressurizing plate 8 rectifying cylinder 53 stirring blade

Claims (5)

[Claims] 1. A bran collecting container is removably provided in a container main body, and a bran removing basket is removably provided in the bran collecting container at intervals. A rotating shaft and the rotation are provided in the bran removing basket. A rice mill comprising a stirrer horizontally rotating through a shaft, and a rectifying cylinder for separating a side surface of the basket from the bran and the rotating shaft in the basket from the bran. 2. A bran collecting container is detachably provided in a container main body, and a bran removing basket is removably provided in the bran collecting container at intervals. Providing a stirrer that rotates horizontally via a shaft, and a rectifying cylinder that partitions the side surface of the basket and the rotation shaft is provided in the basket.
A rice mill further comprising a pressure plate for pressing rice grains circulating in the basket. 3. The stirring member is a stirring blade made of an elongated plate that is gradually inclined upward from the front side to the rear side in the rotation direction, and the stirring blade is positioned at a distance below the lower end opening of the flow regulating cylinder. The rice mill according to claim 1 or 2, wherein an outer end of the stirring blade extends outside the rectifying cylinder. 4. The agitating body is a stirring blade made of an elongated plate that is gradually inclined downward from the front side to the rear side in the rotation direction, and the stirring blade is located below the inside of the flow regulating cylinder. 3. The rice mill according to claim 1, wherein the bottoms of the opposing baskets are formed on the plate surface. 5. The rice mill according to claim 2, wherein the pressure plate is adjustable in weight.