JP4210377B2 - Rice milling blade - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a blade for rice milling, which is capable of efficiently polishing rice in a general household.
[0002]
[Prior art]
Rice mills for household use have been developed to meet the needs of storing rice in brown rice and polishing it immediately before eating in order not to impair the taste of rice, or eating brown rice without completely whitening in consideration of nutrition. Conventionally, as this kind of rice milling machine, as shown in Japanese Utility Model Publication No. 63-13793, a cylindrical outer container having a bottom, and an eye installed in the outer container with a space from the inner peripheral wall of the outer container. A cylindrical rice milling container, a rice milling roll attached to a drive shaft provided on the bottom surface of the outer container and rotatable in the rice milling container, and a motor for rotating the drive shaft, It is known that brown rice to be introduced is shed by rotating a milled rice roll.
[0003]
[Problems to be solved by the invention]
By the way, in such a conventional apparatus, brown rice was flow-circulated over the entire surface of the milled rice roll made of a grinding wheel, and rice bran was removed from the brown rice on the surface of the milled rice roll.
[0004]
Moreover, since it was made to flow-circulate by the rice mill roll and it was gradually polished rice, there existed a problem that it required time for rice milling.
Accordingly, an object of the present invention is to allow brown rice to flow and circulate efficiently and to cause the rice to be polished by rubbing each other and to shorten the time for polishing.
[0005]
[Means for Solving the Problems]
In order to solve such an object, the present invention provides an outer container that is detachably attached to a main body, a metal net-like mesh that is installed at a predetermined distance from the inner surface of the outer container and has a finer stitch than rice grains. A substantially cylindrical main body attached to the rotating shaft, used in a rice milling machine comprising a rice milling container made of wood, a rotating shaft protruding from the bottom of the rice milling container, and a motor for driving the rotating shaft; It is composed of a plurality of blades that extend horizontally from the lower side toward the inner surface of the rice milling container and whose tips are raised substantially in an L shape, and the main body is a small diameter part whose upper end extends to the vicinity of the opening of the rice milling container And a large-diameter portion that gradually and gradually expands from the lower end of the small-diameter portion, and the blade provides a blade for milling rice that is attached to the circumferential surface of the main large-diameter portion. This is the gist. The blade has a shape in which a portion raised in a substantially L shape is bent inward on the side following the rotation direction .
[0006]
【Example】
The embodiment will be described below with reference to the drawings. FIG. 1 is a front internal cross-sectional view showing a rice milling machine according to an embodiment of the present invention, and FIG. 2 is a plan internal cross-sectional view. Reference numeral 1 denotes an L-shaped rice mill main body, 2 an outer container attached to and detached from the upper surface of the L-shaped horizontal portion of the main body 1, and 3 a motor 3 provided in the L-shaped vertical portion of the main body 1. This motor 3 is of a high speed rotation type. The outer container 2 has a bottomed cylindrical shape, has a double structure in consideration of soundproofing properties, and is attached to the main body 1 by bayonet coupling that is fixed by screwing the lower side. In addition, a cylindrical portion 10 that rises in a cylindrical shape is formed on the inner bottom portion of the outer container 2, so that the koji peeled by the polished rice can be stored in the outer container 2. In addition, you may make it equip the clearance gap between the outer containers 2 used as a double structure with a sound absorption material as needed.
[0007]
9 is a rice milling container attached in the outer container 2, which has a shape that becomes smaller in cross section as it goes downward, and is formed from a metal mesh material having a mesh smaller than that of rice grains. A cylindrical attachment portion 11 that fits into a cylindrical portion 10 formed on the inner bottom portion of the outer container 2 is provided on the outer bottom surface of the rice milling container 9, and the rotary shaft 4 is penetrated from the center of the attachment portion 11. The upper coupling 5 connected to the lower coupling 6 on the main body 1 side is attached to the lower end of the rotating shaft 4. Although not shown, when attaching the milled rice container 9 to the outer container 2, the vertical rib provided on the attachment portion 11 side is fitted into the slit provided on the convex portion 10 side. When the rice milling container 9 is attached in the outer container 2 with such a configuration, the upper coupling 5 on the rice milling container 9 side and the lower coupling 6 on the main body 1 side are connected, and the rotation of the motor 3 is performed via the belt transmission unit. It is transmitted and rotates the rotating shaft 4.
[0008]
Reference numeral 12 denotes a rice milling blade attached to the tip of the rotating shaft 4. The substantially cylindrical main body 13 extends horizontally from the lower side of the main body 13 toward the inner surface of the rice milling container 9, and its tip is inclined slightly outward. It comprises a plurality of blades 14 formed in an L shape (about 95 degrees). As shown in FIG. 2, the portion of the blade 14 raised in a substantially L shape has a shape in which the side 14a following the rotation direction is bent inward (about 10 degrees). As a result, the brown rice put into the rice milling container 9 is sent upward along the inner wall of the rice milling container 9 and is transported inward again, circulates as indicated by the arrow X, and is stirred in a spiral shape so that the milled rice is Figured.
[0009]
A controller 7 exposes the operation panel 8 on the upper surface of the main body 1 above and controls the motor 3 in accordance with an input operation on the operation panel 8. 16 is a lid that covers the upper opening of the outer container 2, and 17 is a handle provided outside the outer container 2. Either or both of the outer container 2 and the lid 16 are made of a transparent material such as plastic or glass. The state inside the outer container 2 can be observed from the outside.
[0010]
FIG. 3 is a block diagram showing a control system of the embodiment. A drive circuit 19 for the motor 3 includes a detection circuit 20 that detects the number of rotations of the motor 3 and a transmission circuit 21 that increases or decreases the supply current to the motor 3 (that is, increases or decreases the energization rate). The rotation speed detection circuit 20 amplifies and pulsates a current change that appears on the power supply waveform due to contact between the brush and the coil accompanying the rotation of the motor, and obtains a relative rotation speed by measuring the time between pulses. It is. The transmission circuit 21 is configured to change the relative rotational speed by switching the current supplied to the motor 3 in units of a predetermined cycle and adjusting the ON time and OFF time.
[0011]
The operation panel 8 includes a rice milling amount selection key 22 for setting the amount of rice to be milled, a rice milling degree selection key 23 for selecting the degree of rice milling, and a start / stop key for starting and stopping the operation. 24, the motor rotates only during the input, and an additional milling key 25 is provided to compensate for the lack of milled rice. The milled rice amount ranges from 1 to 5 and the milling degree is 3 minutes. You can choose to polish.
[0012]
FIG. 4 is a table for setting the time of the rice milling operation stored in the memory 26 built in the controller 7. When polishing rice, the time required for polishing differs depending on the amount of brown rice and the degree of milling (the time required for milling increases as the amount increases and the degree of milling increases). 4 is stored, and the driving time of the motor is set in accordance with the rice polishing amount and the rice polishing degree set by the rice polishing amount selection key 22 and the rice polishing degree selection key 23. In this embodiment, the rice milling time is set in 20 steps from the lowest value a (about 2 minutes) to the highest value t (about 8 minutes).
[0013]
Hereinafter, operation and usage in the embodiment will be described. When the measured brown rice is put into the milled rice vessel 9 and the desired milling amount and milling degree are selected by the milling amount selection key 22 and the milling degree selection key 23 on the operation panel 8 and the start / stop key 24 is pressed, the milling blade 12 rotates and rice milling is started. As the blades 12 rotate, the rice at the bottom of the rice milling container 9 is pushed upward and outward by the rotating blade 14, and the rice in the center of the rice milling container 9 flows down along the blade main body 13. It circulates like line X and is stirred in a spiral. As a result, mainly the rice grains rub against each other at high speed and the epidermis is peeled off. At this time, the peeled rice cake is blown into the outer container 2 from the mesh portion of the rice milling container 9 by the rotational force of the rice milling blades 12 and is deposited mainly on the inner bottom corner of the outer container 2. Since the outer container 2 is cylindrical, the clearance between the milled rice container 9 and the outer container 2 is ensured in this easily deposited portion, so that even if the cocoon accumulates, Returning to the milled rice container 9 is avoided.
[0014]
In such a rice milling operation, the rotation speed of the motor 3 is controlled to be a constant rotation speed (preferably about 2000 to 2200 rpm) regardless of the setting of the milling amount and the milling degree. At this time, in the initial stage of rice milling, which is in the state of brown rice, the rotational load is large and the rotational speed of the motor decreases, and as the milling progresses, the rotational load decreases and the rotational speed of the motor increases. Therefore, control is performed such that the rotational speed of the motor is detected at a predetermined timing, and is increased when the rotational speed is lower than a specified value and is decreased when the rotational speed is increased.
[0015]
When the milling time corresponding to the set milling amount and degree of milling has elapsed, the motor 3 is stopped and the milling is finished. Here, if you want to refine the rice a little more by looking at the degree of actual rice polishing, press the additional rice milling key 25 to perform the rice milling operation only while you are typing, and observe the rice through the transparent lid 11. The additional rice milling key 25 may be released at an appropriate place. When the rice milling is completed in this manner, the outer container 2 is removed from the apparatus main body 1 and then the rice milling container 9 is removed from the outer container 2 so that rice remains in the rice milling container 9 and rice bran remains in the outer container 2. Take it out and use it.
[0016]
【The invention's effect】
The present invention is configured as described above, and the brown rice is fed upward along the inner wall of the rice milling container and again conveyed to the inner lower side and circulated and stirred in a spiral shape, so that the rice is rubbed evenly. Efficient rice milling can be achieved, rice milling time can be shortened, and deterioration in taste can be prevented. Further, since the blades are rotating at high speed, the cutting of the rice bran is improved, and the amount of rice bran that flows down into the sewage at the time of rice washing after milling can be reduced as much as possible.
[Brief description of the drawings]
FIG. 1 is a front internal sectional view showing a rice milling machine according to an embodiment of the present invention.
FIG. 2 is a plan internal sectional view of the rice mill.
FIG. 3 is a block diagram illustrating a control system of the embodiment.
FIG. 4 is a diagram showing a table for setting the time for the rice milling operation stored in the memory 26 built in the controller 7 of the embodiment.

Claims (2)

An outer container that is detachably attached to the main body, a rice milling container made of a metal net-like material having a stitch smaller than that of the rice grain, which is installed at a predetermined distance from the inner surface of the outer container, and a bottom of the rice milling container A blade for rice milling used in a rice milling machine comprising a rotating shaft that protrudes and a motor that drives the rotating shaft,
A substantially cylindrical main body attached to the rotating shaft, and a plurality of blades that extend horizontally from the lower side of the main body toward the inner surface of the rice milling container and have their tips raised substantially in an L shape. The main body consists of a small diameter portion whose upper end extends to the vicinity of the opening of the rice milling vessel and a large diameter portion that gradually widens from the lower end of the small diameter portion, A blade for milled rice attached to the circumferential surface of the large-diameter portion of the main body . The blade for rice milling according to claim 1, wherein the blade has a shape in which a portion that rises in a substantially L shape is bent inward on a side that follows the rotation direction .

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