Rice polishing equipment for sake brewing

Abstract

To provide a rice milling device for sake brewing that allows anyone to easily manufacture milled rice having a milling shape required for sake brewing.SOLUTION: A rice milling device for sake brewing at least includes: a storage tank for storing rice grains; a milling part for receiving supply of rice grains from the storage tank and executing milling of rice grains by a polishing roll; and a grain lifting part for lifting the milled rice discharged from the milling part to the storage tank. The rice grains can be caused to pass through the milling part a plurality of times. The rice milling device for sake brewing includes a control part capable of selecting a predetermined milling shape from a plurality of kinds of milling shapes of the milled rice. The control part causes milling of rice grains in the milling part to be executed with the use of the polishing roll corresponding to the predetermined milling shape that has been selected.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a rice polishing device for sake brewing that allows anyone to easily produce polished rice that is optimal for sake brewing, such as original polished rice and flat polished rice, which are special rice polishing processes. [Background technology]

[0002] Conventionally, known methods for polishing rice to make it suitable for sake brewing include original polishing (a method in which rice is polished while maintaining its rugby ball-like shape, which is the shape of brown rice), spherical polishing (a method in which brown rice is polished into a spherical shape from its rugby ball-like shape), and flat polishing (a method in which brown rice is polished from its rugby ball-like shape into a flattened shape like a hamburger steak) (see Patent Document 1).

[0003] Of the above rice polishing methods, spherical polishing is the most common method for sake brewing. On the other hand, original polishing and flat polishing are not practical and are only used in a very limited range. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2002-045128 A Summary of the Invention [Problem to be solved by the invention]

[0005] In other words, conventional rice polishing equipment was not designed to enable anyone to easily obtain polished rice for sake brewing with the desired polished shape (original, flat, spherical) or polishing precision; it was necessary to prepare a rice polishing equipment suitable for each polished shape and polishing precision, and furthermore, precise operational control of the rice polishing equipment was required each time the rice was polished.

[0006] Therefore, the problem that the present invention aims to solve is to provide a rice polishing device for sake brewing that allows anyone to easily produce the polished rice required for sake brewing. [Means for solving the problem]

[0007] The invention of claim 1 of the present application is a rice polishing device for sake brewing that has at least a storage tank capable of storing rice grains, a polishing section that receives rice grains from the storage tank and polishes the rice grains using grinding rolls, and a grain lifting section that can lift polished rice discharged from the polishing section to the storage tank, and is capable of passing rice grains through the polishing section multiple times, and has a control unit that can select a predetermined polishing shape from multiple types of polishing shapes for polished rice, and the control unit causes the rice grains to be polished in the polishing section using the grinding rolls that correspond to the selected predetermined polishing shape.

[0008] The invention according to claim 2 of the present application is the rice polishing device for sake brewing described in claim 1, characterized in that the polished shapes of the polished rice that can be selected by the control unit are at least two of original shape, flat, and spherical.

[0009] The invention of claim 3 of the present application is a rice polishing device for sake brewing as described in claim 1 or 2, characterized in that it has a quality inspection unit capable of detecting the milling precision of the polished rice discharged from the polishing unit, and the control unit is equipped with a milling precision setting means capable of setting the milling precision of the polished rice, and depending on the detection result of the milling precision of the polished rice in the quality inspection unit, it is possible to supply the polished rice to the polishing unit multiple times until the milling precision reaches the set precision.

[0010] The invention of claim 4 of the present application is the rice polishing device for sake brewing described in claim 3, characterized in that it has a filling rate detection unit capable of detecting the filling rate of rice grains in the polishing section, and the control unit is equipped with a supply amount adjustment means capable of adjusting the amount of rice grains supplied to the polishing section, and is capable of controlling the filling rate based on the selected polished shape of the polished rice and the polishing accuracy of the polished rice set by the polishing accuracy setting means.

[0011] The invention of claim 5 of the present application is a rice polishing device for sake brewing described in any one of claims 1 to 4, characterized in that it has a polishing roll selection mechanism that can select the grinding roll according to the polishing shape of the selected polished rice, and the polishing roll selection mechanism is capable of installing the grinding roll corresponding to the polishing shape selected in the control unit in the polishing section.

[0012] The invention according to claim 6 of the present application is a rice polishing device for sake brewing as described in any one of claims 1 to 4, characterized in that it has a polishing roll selection mechanism that can select the grinding roll according to the polishing shape of the selected polished rice, and the polishing roll selection mechanism is capable of supplying rice grains to the polishing section that is provided corresponding to the polishing shape selected in the control unit. Effect of the Invention

[0013] According to the invention of claim 1, the device has a control unit capable of selecting a predetermined polishing shape from a plurality of types of polishing shapes for polished rice, and the control unit can polish rice grains using a grinding roll corresponding to the selected predetermined polishing shape. In other words, in the past, it was necessary to prepare an apparatus configuration according to the polishing shape and perform detailed operation control each time, but the above-mentioned configuration of the present invention makes it possible for the operation manager of the rice polishing device for sake brewing to select the desired polishing shape for the control unit, and further, the effort of making detailed settings for each polishing shape each time can be significantly reduced.

[0014] According to the invention of claim 2, the polished shape of the polished rice that can be selected by the control unit is at least two of the original shape, flat, and spherical shapes, so that it is possible to select multiple types of polished shapes such as original shape and flat, rather than being limited to the spherical shape that is commonly used for sake brewing.

[0015] According to the invention of claim 3, the device has a quality inspection unit capable of detecting the milling precision of the polished rice discharged from the polishing unit, and the control unit is equipped with a milling precision setting means capable of setting the milling precision of the polished rice, and is configured to supply polished rice to the polishing unit multiple times until the milling precision reaches the set precision according to the detection result of the quality inspection unit. By configuring in this way, it is possible to significantly reduce the effort required for the operation manager or the like to frequently check the milling precision of the polished rice discharged from the polishing unit and operate the rice polishing device for sake brewing.

[0016] According to the invention of claim 4, the system has a filling rate detection unit capable of detecting the filling rate of rice grains in the polishing unit, and the control unit is equipped with a supply amount adjustment means capable of adjusting the amount of rice grains supplied to the polishing unit, and is configured to adjust and control the filling rate in the polishing unit based on the polishing shape and polishing accuracy of the selected polished rice. With this configuration, the control unit automatically maintains an appropriate filling rate, significantly reducing the effort required for the operation manager to adjust the filling rate each time.

[0017] According to the invention of claim 5, there is provided a polishing roll selection mechanism that can install in the polishing section a grinding roll that corresponds to the polishing shape selected by the control section. With this configuration, for example, as shown in Fig. 1, the grinding roll selection mechanism 7 automatically installs any one of the spherical polishing roll 28A, the original polishing roll 28B, and the flat polishing roll 28C in the polishing section 2 according to the selected polishing shape, making it possible for anyone to easily obtain polished rice of a desired polishing shape.

[0018] According to the invention of claim 6, it is possible to supply rice grains to a polishing unit provided corresponding to the polishing shape selected by the control unit. For example, as shown in Fig. 5, by providing a plurality of polishing tubes 22 corresponding to the polishing shapes of polished rice and switching the supply flow path of the rice grains according to the selected polishing shape, it is possible to obtain polished rice of the desired polishing shape. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a schematic cross-sectional view of a rice polishing device for sake brewing in one embodiment of the present invention. [Diagram 2] FIG. 2 is an enlarged cross-sectional view of a rice polishing device for sake brewing in one embodiment of the present invention. [Diagram 3] 5A to 5C are diagrams showing display modes of an operation display unit in the embodiment of the present invention. [Figure 4] 1 is a table showing a control configuration according to a refinement shape in one embodiment of the present invention. [Diagram 5] FIG. 2 is a schematic front view of a rice polishing device for sake brewing in another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of the rice polishing device for sake brewing of the present invention will be described with reference to the drawings. Fig. 1 is a schematic cross-sectional view showing the overall configuration of the rice polishing device for sake brewing 1 in this embodiment. Fig. 2 shows an enlarged cross-sectional view of the flow rate adjustment section 4, the polishing section 2, and the koku section 5 in the rice polishing device for sake brewing 1.

[0021] As shown in FIG. 1, the rice polishing apparatus 1 for sake brewing in this embodiment is a circulating vertical rice polishing apparatus, and mainly comprises a polishing section 2, a storage tank 3, a flow rate adjustment section 4, a koku section 5, a grain lifting section 6, a grinding roll selection mechanism 7, and a control section 8.

[0022] The polishing section 2 is installed on the polishing section machine base 9, and is the section where rice grains are polished by a grinding action. Above the polishing section 2, there is provided a flow rate adjustment section 4 that adjusts the flow rate of rice grains supplied to the polishing section 2, and a storage tank 3. The storage tank 3 temporarily stores rice grains during the polishing process for the circulation process of polishing.

[0023] The rice milling section 5 separates the rice grains from the bran while moving the rice grains polished in the polishing section 2 downward, and the separated rice grains are transferred to the bottom of the lifting section 6 installed on the lifting section stand 10. The lifting section 6 lifts the rice grains transferred from the rice milling section 5 to the top of the storage tank 3, where the lifted rice grains are temporarily stored and then circulated again via the flow rate adjustment section 4.

[0024] The grinding roll selection mechanism 7 in this embodiment is capable of installing the grinding roll 28 in the whitening section 2 without manual intervention. Furthermore, the grinding roll selection mechanism 7 is also capable of replacing the grinding roll 28, and it is possible to install the spherical whitening roll 28A, the original whitening roll 28B, and the flat whitening roll 28C, which will be described later, in the whitening section 2 based on a control instruction from the control unit 8.

[0025] The control unit 8 controls each part of the above-mentioned rice polishing apparatus for sake brewing 1, and executes a series of rice polishing operations based on the settings, etc., set in the control unit 8 by an operation manager or the like. That is, under the control of the control unit 8, the rice grains stored in the storage tank 3 are polished in the polishing unit 2 and then sent to the rice polishing unit 5. The rice grains separated from the bran in the rice polishing unit 5 are lifted into the inlet of the storage tank 3 by the rice lifting unit 6. The rice grains repeat this circulation cycle until they are finished into the desired sake rice.

[0026] 2 mainly shows an enlarged cross-sectional view of the polishing section 2, the flow rate adjustment section 4, and the rice polishing section 5. Between the polishing section 2 and the storage tank 3, there is provided the flow rate adjustment section 4 which adjusts the flow rate of rice grains from the storage tank 3 to the polishing section 2. The lower part of the storage tank 3 is formed in an inverted conical cylinder, and further below that is formed a cylindrical valve tube 44. Inside the inverted conical cylinder, the flow rate adjustment section 4 has a valve body 41 which is formed in an approximately conical shape and can be raised and lowered.

[0027] One side of the valve lever 42, which controls the elevation of the valve body 41, engages with a shaft portion 41a extending downward from the valve body 41, and the other side of the valve lever 42, which protrudes outside the valve cylinder 44, rotatably engages with the lower end of an electric jack 43 supported by a support arm 45. With this configuration, the jack 43 is controlled by a control signal from the control unit 8, and the flow rate of rice grains flowing into the polishing section 2 is adjusted.

[0028] The polishing section 2 includes a grinding assembly 21, a polishing tube 22, and a discharge trough 23. The polishing tube 22 has an upper portion serving as a rice grain receiving port 24, and its base is fixed to the polishing section machine base 9. A portion of the base is cut out to form a feed port 25. The grinding assembly 21 includes a vertical shaft 26, a pressing member 27, a grinding roll 28, and a roll receiving base 29, and is assembled around the vertical shaft 26. The grinding roll 28, the pressing member 27, and the roll receiving base 29 are all circular in plan view, and have a boss in the center for the vertical shaft 26. The vertical shaft 26 is supported vertically on the polishing section machine base 9, and is supported by two bearing mechanisms 30 so as to be supported in the thrust direction and to be rotatable in the radial direction.

[0029] A roll receiving base 29 is fitted on the vertical shaft 26 and fixed to the vertical shaft 26 at a boss 31. A grinding roll 28 is loosely fitted on the vertical shaft 26 at a boss 32 on the roll receiving base 29. A pressing member 27 is fitted on the vertical shaft 26 at a boss 33 above the grinding roll 28. The pressing member 27 has a lower edge that contacts the upper surface of the grinding roll 28 and is fixed to the upper end of the vertical shaft 26 by a fastening bolt 34 inserted from above the boss 33. With the above-mentioned configuration, the grinding assembly 21 is attached to the polishing unit base 9, and the grinding roll 28 is sandwiched and fixed between the roll receiving base 29 and the pressing member 27 by the fastening bolt 34. Therefore, the grinding assembly 21 rotates together with the vertical shaft 26.

[0030] A polishing chamber 35 is formed between the inner surface of the polishing tube 22 and the outer circumferential surface of the grinding roll 28, and its bottom is closed by the outer circumferential portion 36 of the roll receiving base 29. A driven pulley 37 is fixed to the lower end of the vertical shaft 26, and is connected to a driving pulley of a motor M by a V-belt so as to move in conjunction with the driving pulley. The feed port 25 provided at the base of the polishing tube 22 opens into a discharge trough 23 that guides rice grains to the koku section 5, and a pressure regulating valve 38 having an air pressure structure is disposed at this opening. The opening of the pressure regulating valve 38 changes depending on the rice grain pressure in the polishing chamber 35, and the filling rate of the polishing chamber 35 described below is adjusted and controlled depending on the air pressure of the pressure regulating valve 38 and the flow rate of rice grains into the polishing tube 22.

[0031] The grinding roll 28 is integrally formed by stacking a plurality of annular partial rolls one above the other. In this embodiment, each partial roll is made of an aluminum alloy, and CBN abrasive grains are fixed to the outer peripheral surface of each partial roll by electroplating. With conventional GC grindstones (sintered grindstones), it was difficult to eliminate millimeter-level irregularities or to sinter the grindstone into a perfect circle, but the above-mentioned electroplated grindstone with CBN abrasive grains has a machined base metal of the grinding roll 28, so that the roll body is a perfect circle and is suitable for polishing rice while aligning the rice grains with their side surfaces facing the surface of the grinding roll 28. This makes it possible to perform original polishing and flat polishing in particular. When the motor M is driven, the vertical shaft 26 is driven via the passive pulley 37, and the grinding roll 28 rotates in the polishing tube 22.

[0032] In the polishing section 2, rice grains are sent from the storage tank 3 through the receiving port 24 to the polishing chamber 35, where the rice grains are ground (polished) between the polishing cylinder 22 and the grinding roll 28. The rice grains that pass through the polishing chamber 35 are received by the outer circumferential portion 36 of the roll receiving stand 29, and are eventually sent out from the delivery port 25 to the discharge gutter 23.

[0033] The mixture of rice grains and bran sent to the discharge chute 23 is separated into rice grains and bran as it flows down the rice picking section 5, and the separated rice grains are lifted to the top of the storage tank 3 by the lifting section 6 installed on the lifting section machine base 10. The rice grains repeat this circulation cycle until they are finished into the desired sake rice.

[0034] The control unit 8 in this embodiment is capable of various setting operations in the rice polishing apparatus for sake brewing 1, and controls the rice polishing apparatus for sake brewing 1 based on the setting conditions set by the operation manager and the quality state of the polished rice as determined by a grain discriminator (not shown). As shown in Fig. 1, the control unit 8 has an operation display unit 80 that can display various setting operations and information related to quality, etc. The operation display unit 80 is composed of a liquid crystal display having a touch panel, and for example, Fig. 3 shows an example of the display mode of the setting operation screen on the operation display unit 80.

[0035] 3, an original polished rice icon 84, a flat polished rice icon 85, and a spherical polished rice icon 86 are displayed on the display screen of the operation display unit 80, which allows the selection of the polished shape of the polished rice. The polished shape is determined by the operation manager touching the desired polished shape with his finger, and the grinding roll selection mechanism 7 automatically installs one of the spherical polishing roll 28A, the original polishing roll 28B, and the flat polishing roll 28C in the polishing section 2.

[0036] Furthermore, it is possible to set the milling precision of the polished rice on the operation display unit 80, and the milling precision to be set is displayed on the milling precision display unit 87 by appropriately touching the milling precision DOWN icon 81 and the milling precision UP icon 82. Then, by touching the confirm icon 83, the set conditions are confirmed, and the rice polishing device for sake brewing 1 is configured to operate.

[0037] Next, the control mode of the rice polishing device 1 for sake brewing in this embodiment will be described based on the table shown in FIG.

[0038] As described above, in this embodiment, three types of polishing shapes shown in the figure can be selected based on the conditions set by the operation manager, and according to the type of polishing shape set, the grinding roll selection mechanism 7 installs one of the spherical polishing roll 28A, the original polishing roll 28B, and the flat polishing roll 28C in the polishing section 2. The grain size of the roll abrasive of each grinding roll 28 is 40 mesh for the spherical polishing roll 28A, 60 mesh for the original polishing roll 28B, and 80 mesh for the flat polishing roll 28C. In addition, the current value corresponding to the polishing load, the rotation speed of the grinding roll 28, and the flow rate of rice grains to the polishing chamber 35 are controlled as shown in the figure according to each polishing shape, making it possible to produce polished rice having a desired polishing shape.

[0039] As described above, in this embodiment, it is possible to set a desired milling accuracy. By presetting parameters such as those shown in Fig. 4 in the control unit 8, the current value corresponding to the milling load, the rotation speed of the grinding roll 28, and the flow rate of rice grains to the milling chamber 35 can be adjusted and controlled in more detail, making it possible to produce milled rice with a desired milling accuracy. "80% milling" corresponds to a milling accuracy of 20%, "60% milling" corresponds to a milling accuracy of 40%, and "40% milling" corresponds to a milling accuracy of 60%, respectively. For example, when flat milled rice with a milling accuracy of 60% is set on the operation display unit 80, the current value corresponding to the milling load, the rotation speed of the grinding roll 28, and the flow rate of rice grains to the milling chamber 35 are controlled as shown in Fig. 4, and the filling rate of rice grains in the milling chamber 35 is controlled to be 33 to 50%.

[0040] (Other embodiments) One embodiment of the rice polishing device for sake brewing of the present invention has been described above. However, the present invention is not necessarily limited to the above-mentioned embodiment, and includes, for example, the following modified examples.

[0041] For example, in the embodiment described above based on Fig. 1, the grinding roll selection mechanism 7 is configured to install any one of the spherical polishing roll 28A, the original polishing roll 28B, and the flat polishing roll 28C in the polishing section 2 according to the polished shape of the polished rice selected by the control unit 8. However, the present invention is not necessarily limited to this embodiment, and for example, as shown in Fig. 5, the rice polishing device for sake brewing 1 can be configured to have multiple polishing tubes 22 corresponding to the polished shape of the polished rice.

[0042] That is, it is also possible to arrange the polishing tube 22 with the spherical polishing roll 28A, the polishing tube 22 with the original polishing roll 28B, and the polishing tube 22 with the flat polishing roll 28C all on the upper part of the polishing section machine base 9, and to distribute rice grains supplied from the flow rate adjustment section 4 by the rice grain distribution section 70 according to the polished shape of the polished rice selected by the control section 8. By configuring in this way, although the rice polishing device for sake brewing 1 itself becomes large, it is possible to greatly reduce and simplify the associated equipment compared to an equipment configuration in which various grinding rolls are transported from a storage place and installed in the polishing tube 22. In addition, it is possible to share the storage tank 3, the mankoku section 5, the grain lifting section 6, etc., and it is possible to efficiently produce polished rice of the desired polished shape while suppressing equipment costs.

[0043] In addition, in the above-described embodiment, an operation display unit 80 equipped with a touch panel is installed on the side of the sake brewing rice polishing device 1, but this is not necessarily limited to such a form. For example, it is also possible to operate it remotely from an operation room or to set operations using a PC terminal.

[0044] In addition, in the above-described embodiment, the desired refinement shape is selected from three types of refinement shapes, namely, spherical, original, and flat, but it is also possible to configure the system to select at least two types of refinement shapes from the three types of refinement shapes, namely, spherical, original, and flat.

[0045] Although the embodiment and some modified examples of the present invention have been described above, the above-mentioned embodiment of the invention is intended to facilitate understanding of the present invention and does not limit the present invention. The present invention may be modified or improved without departing from the spirit thereof, and the present invention includes equivalents thereof. Furthermore, the components described in the claims and the specification may be combined or omitted within the scope of solving at least part of the above-mentioned problems or achieving at least part of the effects. [Explanation of symbols]

[0046] 1. Rice polishing equipment for sake brewing 2. Whitening section 3. Storage tank 4 Flow rate adjustment section 50,000 kokubu 6 Grain frying department 7 Grinding roll selection mechanism 8. Control Unit 9. Milling Machine 21 Grinding Assembly 22 Whitening cylinder 23 Discharge gutter 24 Underbite 25 Delivery port 25 26 Vertical axis 27 Holding member 28 Grinding Roll 28A Spherical whitening roll 28B Original whitening roll 28C Flat whitening roll 29 Roll receiving stand 30 Bearing mechanism 31 Boss 32 Boss 33 Boss 34 Retaining bolt 35 Milling Room 36 Outer area 37 Passive pulley 38 Pressure Regulating Valve 41 Valve body 41a Shaft 42 Valve lever 44 Valve tube 43 Jack 45 Support Arm 80 Operation display section 81 DOWN Pounding Precision Icon 82 pounding precision improvement icon 84 Original rice polishing icon 83 Confirm icon 85 Flat rice polishing icon 86 Spherical Polished Rice Icon 87 Pounding accuracy display section

Claims

1. A rice polishing device for sake brewing that has at least a storage tank capable of storing rice grains, a polishing section that receives rice grains from the storage tank and polishes the rice grains with a grinding roll, and a grain lifting section that can lift polished rice discharged from the polishing section to the storage tank, and that can pass rice grains through the polishing section multiple times. A control unit is provided that can select a predetermined polishing shape from a plurality of polishing shapes of polished rice, The control unit causes the polishing unit to polish the rice grains using the grinding roll corresponding to the selected predetermined polishing shape, A quality inspection unit capable of detecting the milling accuracy of the polished rice discharged from the polishing unit, The control unit includes a milling precision setting unit capable of setting the milling precision of the polished rice, and is capable of supplying the polished rice to the polishing unit a plurality of times until the milling precision reaches the set precision according to the detection result of the milling precision of the polished rice in the quality inspection unit. A rice polishing device for sake brewing.

2. A filling rate detection unit capable of detecting a filling rate of rice grains in the polishing unit, The control unit includes a supply amount adjusting means capable of adjusting the amount of rice grains supplied to the polishing unit, and is capable of controlling the filling rate based on the selected polished shape of the polished rice and the polishing accuracy of the polished rice set by the polishing accuracy setting means.

2. The rice polishing apparatus for sake brewing according to claim 1.

3. A rice polishing device for sake brewing comprising at least a storage tank capable of storing rice grains, a polishing section which receives rice grains from the storage tank and polishes the rice grains using a grinding roll, and a grain lifting section which can lift polished rice discharged from the polishing section to the storage tank, and which is capable of passing rice grains through the polishing section multiple times; A control unit is provided that can select a predetermined polishing shape from a plurality of polishing shapes of polished rice, The control unit causes the polishing unit to polish the rice grains using the grinding roll corresponding to the selected predetermined polishing shape, A polishing roll selection mechanism is provided that can select the grinding roll according to the polished shape of the selected polished rice, The polishing roll selection mechanism is capable of installing the grinding roll corresponding to the polishing shape in the polishing section according to the polishing shape selected in the control section. A rice polishing device for sake brewing.

4. A rice polishing device for sake brewing comprising at least a storage tank capable of storing rice grains, a polishing section which receives rice grains from the storage tank and polishes the rice grains with a grinding roll, and a grain lifting section which can lift polished rice discharged from the polishing section to the storage tank, and which is capable of passing rice grains through the polishing section multiple times; A control unit is provided that can select a predetermined polishing shape from a plurality of polishing shapes of polished rice, The control unit causes the polishing unit to polish the rice grains using the grinding roll corresponding to the selected predetermined polishing shape, A quality inspection unit capable of detecting the milling accuracy of the polished rice discharged from the polishing unit, The control unit includes a milling precision setting means capable of setting the milling precision of the polished rice, and is capable of supplying the polished rice to the polishing unit a plurality of times until the milling precision reaches the set precision according to the detection result of the milling precision of the polished rice in the quality inspection unit, A polishing roll selection mechanism is provided that can select the grinding roll according to the polished shape of the selected polished rice, The polishing roll selection mechanism is capable of supplying rice grains to the polishing section provided corresponding to the polishing shape selected by the control section. A rice polishing device for sake brewing.

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