Rinse-free rice production apparatus and rinse-free rice production method

Abstract

To improve the quality of rinse-free rice.SOLUTION: In a rinse-free rice production apparatus 10, polished rice is supplied into a wire mesh cylinder 20, and a roll 24 rotates within the wire mesh cylinder 20. Here, blades 24A of the rotating roll 24 generate an airflow that moves the polished rice along the inner peripheral surface of the wire mesh cylinder 20. As the polished rice moves, bran at surfaces of the polished rice is removed by areas around slits 20A on the inner peripheral surface of the wire mesh cylinder 20, thereby producing rinse-free rice. This process can suppress the application of pressure to the polished rice, thereby reducing heat generation and grain breakage of the polished rice, resulting in improved quality of the rinse-free rice.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an apparatus and method for producing rinse-free rice that removes bran from rice. [Background technology]

[0002] In the rice polishing machine described in Patent Document 1 below, polished rice is supplied into a porous container, and a rotating blade is rotated inside the porous container, thereby removing bran from the polished rice.

[0003] In this rice polishing machine, the polished rice is agitated by rotating blades and brought into contact with a porous container to produce rinse-free rice. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2004-275953 A Summary of the Invention [Problem to be solved by the invention]

[0005] In consideration of the above, an object of the present invention is to provide a rinse-free rice producing apparatus and a rinse-free rice producing method that can improve the quality of rinse-free rice. [Means for solving the problem]

[0006] The first embodiment of the no-rinse rice manufacturing apparatus of the present invention comprises a removal tube having a removal hole into which rice is supplied, and a wind generating mechanism that generates wind inside the removal tube to move the rice around the inner surface of the removal tube, thereby removing bran from the rice around the removal hole of the removal tube.

[0007] A second aspect of the present invention is a no-wash rice manufacturing apparatus according to the first aspect of the present invention, wherein the wind generating mechanism is provided within the removal tube and has a rotating body that is rotated, and a protrusion that is provided on the rotating body and generates wind within the removal tube as the rotating body rotates, causing rice to move along the inner surface of the removal tube.

[0008] A third aspect of the present invention is a rinse-free rice producing apparatus according to the second aspect of the present invention, in which the intrusion of rice radially inward from the tip of the protrusion is restricted.

[0009] A fourth aspect of the rinse-free rice producing apparatus of the present invention is the rinse-free rice producing apparatus of any one of the first to third aspects of the present invention, wherein the corner between the inner surface of the removal tube and the peripheral surface of the removal hole is sharp.

[0010] A rinse-free rice producing apparatus according to a fifth aspect of the present invention is the rinse-free rice producing apparatus according to any one of the first to fourth aspects of the present invention, wherein the removal hole extends circumferentially of the removal tube.

[0011] A sixth aspect of the no-wash rice manufacturing apparatus of the present invention is a no-wash rice manufacturing apparatus of any one of the first to fifth aspects of the present invention, which is provided with a suction mechanism that sucks up the bran removed from the rice and discharged outside the removal tube through the removal hole.

[0012] A rinse-free rice producing apparatus according to a seventh aspect of the present invention is the rinse-free rice producing apparatus according to any one of the first to sixth aspects of the present invention, further comprising a supply mechanism that adjusts the amount of rice supplied into the removal tube.

[0013] The eighth aspect of the present invention provides a method for producing no-rinse rice, comprising: a removal tube having a removal hole; and a wind generating mechanism for generating wind in the removal tube. The method comprises: supplying rice into the removal tube; Wind is generated within the removal tube to move the rice along the inner circumferential surface of the removal tube, thereby removing the bran from the rice around the removal hole of the removal tube.

[0014] A ninth aspect of the present invention is a wash-free rice production method in which, in the eighth aspect of the present invention, the wind generating mechanism has a rotating body provided within the removal tube and a protrusion provided on the rotating body, and by rotating the rotating body, the protrusion generates wind within the removal tube, thereby moving the rice along the inner surface of the removal tube.

[0015] A wash-free rice producing method according to a tenth aspect of the present invention is the wash-free rice producing method according to the ninth aspect of the present invention, in which the intrusion of rice into an area radially inward of the tip of the protrusion is restricted.

[0016] A wash-free rice producing method of an eleventh aspect of the present invention is a wash-free rice producing method of any one of the eighth to tenth aspects of the present invention, wherein the corner between the inner surface of the removal tube and the peripheral surface of the removal hole is sharp.

[0017] A rinse-free rice producing method of a twelfth aspect of the present invention is the rinse-free rice producing method of any one of the eighth to eleventh aspects of the present invention, wherein the removal hole extends circumferentially of the removal tube.

[0018] A wash-free rice producing method of a 13th aspect of the present invention is a wash-free rice producing method of any one of the 8th to 12th aspects of the present invention, in which a suction mechanism sucks up the bran removed from the rice and discharged outside the removal tube through the removal hole.

[0019] A wash-free rice producing method according to a fourteenth aspect of the present invention is the wash-free rice producing method according to any one of the eighth to thirteenth aspects of the present invention, wherein a supply mechanism adjusts the amount of rice supplied into the removal tube. Effect of the Invention

[0020] In the first aspect of the rinse-free rice production device of the present invention, rice is supplied into the removal tube. The wind generated in the removal tube by the wind generating mechanism moves the rice along the inner circumferential surface of the removal tube, and the bran is removed from the rice by the periphery of the removal hole of the removal tube, producing rinse-free rice.

[0021] This prevents pressure from being applied to the rice, suppresses temperature rise and crushing of the rice, and improves the quality of the no-rinse rice.

[0022] In the second aspect of the present invention, the rinse-free rice manufacturing device has a wind generating mechanism that rotates a rotor in the removal tube, and the rice is moved along the inner circumferential surface of the removal tube by the wind generated inside the removal tube by the protruding part of the rotor. Therefore, with a simple configuration, wind can be generated inside the removal tube, and the rice can be moved along the inner circumferential surface of the removal tube.

[0023] In the rinse-free rice producing device according to the third aspect of the present invention, the intrusion of rice into the inner side in the rotational diameter direction from the tip of the protrusion is restricted, so that the pressure applied to the rice by the rotating protrusion can be appropriately suppressed.

[0024] In the rinse-free rice producing device according to the fourth aspect of the present invention, the corner between the inner circumferential surface of the removal tube and the circumferential surface of the removal hole is sharp, which allows the bran to be effectively removed from the rice.

[0025] In the rinse-free rice production device of the fifth aspect of the present invention, the removal hole extends in the circumferential direction of the removal tube. Therefore, unlike when the removal hole extends in the axial direction of the removal tube, it is possible to appropriately prevent rice from being broken around the removal hole of the removal tube.

[0026] In the sixth aspect of the present invention, the washing-free rice manufacturing apparatus is configured to remove the water from the rice and pass it through the removal hole to the outside of the removal tube. The discharged bran is sucked up by a suction mechanism, so that the bran removed from the rice can be collected.

[0027] In the rinse-free rice producing device according to the seventh aspect of the present invention, the supply mechanism adjusts the amount of rice supplied to the removal tube, thereby making it possible to maintain an appropriate amount of rice in the removal tube.

[0028] In the eighth aspect of the method for producing no-rinse rice of the present invention, rice is supplied into the removal tube. Furthermore, the wind generating mechanism generates wind in the removal tube to move the rice along the inner circumferential surface of the removal tube, whereby the bran is removed from the rice by the air around the removal hole of the removal tube, producing no-rinse rice.

[0029] This prevents pressure from being applied to the rice, suppresses temperature rise and crushing of the rice, and improves the quality of the no-rinse rice.

[0030] In the rinse-free rice production method of the ninth aspect of the present invention, the wind generating mechanism rotates a rotor in the removal tube, and the protruding part of the rotor generates wind in the removal tube, moving the rice along the inner circumferential surface of the removal tube. Therefore, with a simple configuration, wind can be generated in the removal tube, and the rice can move along the inner circumferential surface of the removal tube.

[0031] In the rinse-free rice producing method of the tenth aspect of the present invention, the intrusion of rice into the inner side in the rotational diameter direction from the tip of the protrusion is restricted, thereby appropriately suppressing the pressure applied to the rice by the rotating protrusion.

[0032] In the rinse-free rice producing method of the eleventh aspect of the present invention, the corner between the inner circumferential surface of the removal tube and the circumferential surface of the removal hole is sharp, which allows the bran to be effectively removed from the rice.

[0033] In the rinse-free rice producing method of the twelfth aspect of the present invention, the removal holes extend in the circumferential direction of the removal tube. Therefore, unlike when the removal holes extend in the axial direction of the removal tube, it is possible to appropriately prevent rice from being crushed around the removal holes of the removal tube.

[0034] In the rinse-free rice producing method of the thirteenth aspect of the present invention, the bran removed from the rice and discharged to the outside of the removal tube through the removal hole is sucked in by the suction mechanism, so that the bran removed from the rice can be collected.

[0035] In the rinse-free rice producing method of the fourteenth aspect of the present invention, the supply mechanism adjusts the amount of rice supplied to the removal tube, thereby making it possible to keep the amount of rice in the removal tube appropriate. [Brief description of the drawings]

[0036] [Figure 1] 1 is an oblique view showing a rinse-free rice manufacturing apparatus according to an embodiment of the present invention, viewed from diagonally front right. FIG. [Diagram 2]1 is a partially cutaway front view showing a rinse-free rice manufacturing apparatus according to an embodiment of the present invention. FIG. [Diagram 3] 1 is a partially cutaway side view of a rinse-free rice manufacturing apparatus according to an embodiment of the present invention, seen from the right. [Figure 4] 1 is an oblique view showing the main parts of a rinse-free rice manufacturing apparatus according to an embodiment of the present invention, viewed from diagonally front right. FIG. [Diagram 5] 1 is a cross-sectional view from the right showing the main parts of a rinse-free rice manufacturing apparatus according to an embodiment of the present invention. FIG. [Figure 6] 1 is a front view showing a portion of the wire mesh of a rinse-free rice producing apparatus according to an embodiment of the present invention. FIG. [Figure 7] 1A to 1C are diagrams showing the discharge unit of a rinse-free rice manufacturing apparatus according to an embodiment of the present invention, in which (A) is an oblique view seen from diagonally front right, (B) is a cross-sectional view seen from the right showing the discharge shutter in a closed state, and (C) is a cross-sectional view seen from the right showing the discharge shutter in an open state. [Figure 8] (A) to (D) are side views viewed from the right showing the production status of rinse-free rice in a rinse-free rice production apparatus according to an embodiment of the present invention, where (A) shows the first stage, (B) shows the second stage, (C) shows the third stage, and (D) shows the fourth stage. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0037] Fig. 1 shows a perspective view of a rinse-free rice production apparatus 10 according to an embodiment of the present invention, as seen diagonally from the front right. Furthermore, Fig. 2 shows a partially cutaway front view of the rinse-free rice production apparatus 10 as seen from the front, and Fig. 3 shows a partially cutaway side view of the rinse-free rice production apparatus 10 as seen from the right. In the drawings, the front of the rinse-free rice production apparatus 10 is indicated by an arrow FR, the right side of the rinse-free rice production apparatus 10 is indicated by an arrow RH, and the upward direction is indicated by an arrow UP.

[0038] As shown in Figs. 1 to 3, the rinse-free rice producing apparatus 10 according to this embodiment is provided with a support frame 12 as a support body.

[0039] An approximately cylindrical outer cylinder 14 is supported on the upper part of the support frame 12. The outer cylinder 14 has an axial direction extending in the left-right direction and is closed at both the left and right ends.

[0040] A supply tube 16 is fixed to the left and right ends of the outer tube 14, and the lower end of the supply tube 16 is inserted into the outer tube 14. The supply tube 16 extends upward from the outer tube 14, and the upper end of the supply tube 16 is expanded in diameter to form a hopper 16A. The inside of the hopper 16A is open to the top, and white rice H (polished rice) is supplied (put into) the hopper 16A from above.

[0041] A supply unit 18 serving as a supply mechanism is provided below the hopper 16A in the supply tube 16, and a plate-shaped supply shutter (not shown) serving as a supply restriction member is provided in the supply unit 18. The supply shutter closes the inside of the supply tube 16, and restricts the polished rice H in the hopper 16A from flowing down inside the supply tube 16. A supply drive device 18A (e.g., an air cylinder) is connected to the supply shutter, and when the supply drive device 18A is operated to reciprocate the supply shutter, the supply shutter opens the inside of the supply tube 16 for a specified time, and a specified amount of polished rice H in the hopper 16A flows down inside the supply tube 16.

[0042] A cylindrical wire mesh 20 (see Figs. 4 to 6) is provided approximately coaxially in the outer tube 14 as a removal tube, and the left and right ends of the wire mesh 20 are closed, and the lower end of the supply tube 16 penetrates and fits into the wire mesh 20. A large number of approximately long rectangular slits 20A (partially shown in Figs. 4 and 6) are formed through the wire mesh 20 as removal holes, and the slits 20A are arranged over the entire circumferential direction (excluding the discharge hole 20B portion described below) and the entire axial direction of the wire mesh 20. The slits 20A extend in the circumferential direction of the wire mesh 20, and both ends are curved in an arc shape, and the corners between the inner peripheral surface of the wire mesh 20 and the peripheral surface of the slits 20A are sharp. A rectangular discharge hole 20B is formed through the lower front part of the wire mesh 20, and the discharge hole 20B extends over the entire axial direction of the wire mesh 20. The space between the wire mesh 20 and the outer cylinder 14 is made into a suction chamber 22, and the suction chamber 22 is in communication with the inside of the wire mesh 20 via a slit 20A.

[0043] A cylindrical roll 24 (see Figs. 4 to 6) is provided coaxially within the wire mesh 20 as a rotor constituting the wind generating mechanism, and the left and right ends of the roll 24 are closed. A removal drive device 26 (e.g., a motor) is connected to the roll 24, and when the removal drive device 26 is operated, the roll 24 rotates at high speed. The space between the wire mesh 20 and the roll 24 forms a removal chamber 28, which is connected to the inside of the lower end of the supply tube 16, and the supply tube 16 is rotated at high speed. White rice H flows down through 6 and is supplied (flows down).

[0044] A plurality of blades 24A in the form of long rectangular plates are fixed to the outer periphery of the roll 24 as protrusions constituting the wind generating mechanism, and the plurality of blades 24A are arranged at equal intervals in the circumferential direction of the roll 24 and rotate integrally with the roll 24. The blades 24A protrude radially outward from the roll 24 and are arranged perpendicular to the circumferential direction of the roll 24, and the blades 24A extend in the entire axial direction of the roll 24. The gap dimension between the inner circumferential surface of the wire netting 20 and the tip (protruding tip) of the blade 24A is approximately 1 to 2 times the longitudinal dimension of the polished rice H, and the volume between the inner circumferential surface of the wire netting 20 and the rotation trajectory of the tip of the blade 24A is made larger than the volume of polished rice H supplied at one time from the pair of supply tubes 16 to the removal chamber 28. When the roll 24 (including the blades 24A) is rotated, the blades 24A generate a wind in the radially outward and circumferential direction in the removal chamber 28, and the polished rice H is moved circumferentially around the inner peripheral surface of the wire mesh 20 by this wind (see Fig. 8 (A) to (D)), and the bran is removed from the polished rice H by the corner between the inner peripheral surface of the wire mesh 20 and the peripheral surface of the slits 20A, turning the polished rice H into no-rinse rice M. In addition, the bran removed from the polished rice H is discharged into the suction chamber 22 between the wire mesh 20 and the outer cylinder 14 through the slits 20A by the wind generated by the blades 24A.

[0045] A discharge unit 30 (see Figs. 7A-7C) serving as a discharge mechanism is provided below the discharge hole 20B of the wire mesh 20. The discharge unit 30 is elongated in the left-right direction and penetrates and is fitted into the outer cylinder 14. A discharge passage 30A is formed within the discharge unit 30, and the upper end of the discharge passage 30A is connected to the discharge hole 20B. A long, plate-like discharge shutter 30B serving as a discharge restriction member is provided within the discharge unit 30, and the discharge shutter 30B closes the upper end of the discharge passage 30A (see Fig. 7B) to close the discharge hole 20B. A discharge drive device 30C (e.g., an air cylinder) is connected to the discharge shutter 30B. When the discharge drive device 30C is operated and the discharge shutter 30B moves back and forth, the discharge shutter 30B opens the discharge path 30A and the discharge hole 20B for a predetermined time, and the unwashed rice M in the removal chamber 28 flows down the discharge hole 20B and the discharge path 30A.

[0046] A rectangular discharge tube 32 is provided below the discharge unit 30, and extends diagonally downward toward the front. The upper end of the discharge tube 32 is elongated in the left-right direction, and the left-right dimension of the discharge tube 32 gradually becomes smaller toward the bottom. The inside of the upper end of the discharge tube 32 is connected to the lower end of the discharge passage 30A of the discharge unit 30, and the unwashed rice M flows down from the lower end of the discharge passage 30A into the upper end of the discharge tube 32, so that the unwashed rice M flows down inside the discharge tube 32 and is discharged from the lower end of the discharge tube 32.

[0047] A suction tube 34 is fixed to the rear and lower side of the outer tube 14, and the inside of the suction tube 34 is connected to the suction chamber 22 between the outer tube 14 and the wire mesh 20. The suction tube 34 is connected to a suction device 36 (e.g., a blower) serving as a suction mechanism. When the suction device 36 is operated, the air in the suction chamber 22 is sucked into the suction device 36 through the suction tube 34, and the bran discharged into the suction chamber 22 is sucked into the suction device 36 through the suction tube 34.

[0048] Next, the operation of this embodiment will be described.

[0049] In the no-rinse rice manufacturing apparatus 10 configured as described above, the supply drive device 18A is operated in the supply unit 18, and the supply shutter opens the supply tube 16 for a specified time, causing the white rice H in the hopper 16A to flow down the supply tube 16 and be supplied to the removal chamber 28 between the wire mesh 20 and the roll 24.

[0050] Furthermore, by operating the removal drive device 26, the roll 24 (including the blade 24A) is rotated at high speed within the wire mesh 20, and the blade 24A is moved radially outward and circumferentially into the removal chamber 28. As a result, the polished rice H in the removal chamber 28 is subjected to radially outward wind pressure from the removal chamber 28 around the entire circumference of the wire netting 20, and is arranged in a layer between the inner circumferential surface of the wire netting 20 and the rotation trajectory of the tip of the blade 24A, and is moved in the circumferential direction by the wind while rolling around the inner circumferential surface of the wire netting 20. The polished rice H at the lower end of the wire netting 20 is also moved at the same speed (slower than the blade 24A) as the polished rice H other than at the lower end of the wire netting 20. Then, the bran is scraped off (peeled) and removed from the polished rice H by the corner between the inner circumferential surface of the wire netting 20 and the peripheral surface of the slit 20A, and the polished rice H is turned into no-rinse rice M.

[0051] Furthermore, the bran removed from the polished rice H is discharged through the slits 20A into the suction chamber 22 between the wire mesh 20 and the outer tube 14 by the wind generated by the blades 24A. This prevents the bran removed from the polished rice H from adhering again to the polished rice H. Then, by operating the suction device 36, the bran discharged into the suction chamber 22 is sucked into the suction device 36 through the suction tube 34.

[0052] Furthermore, after the white rice H has been converted into unwashed rice M, the discharge drive device 30C in the discharge unit 30 is operated, and the discharge shutter 30B opens the discharge hole 20B of the wire mesh 20 and the discharge path 30A of the discharge unit 30 for a predetermined period of time, causing the unwashed rice M in the removal chamber 28 to flow down the discharge hole 20B, the discharge path 30A and the discharge tube 32, and be discharged from the lower end of the discharge tube 32.

[0053] Moreover, the above-mentioned process from the operation of the supply driving device 18A to the operation of the discharge driving device 30C is repeated multiple times as necessary.

[0054] Here, as described above, the polished rice H is moved along the inner circumferential surface of the wire mesh 20 by the wind generated by the blades 24A of the rotating roll 24, and the bran is removed from the polished rice H by the corners between the inner circumferential surface of the wire mesh 20 and the circumferential surfaces of the slits 20A, producing pre-wash rice M. This prevents pressure from being applied to the polished rice H by the rotating blades 24A, thereby preventing the polished rice H from increasing in temperature and breaking, and improving the quality of the pre-wash rice M.

[0055] Furthermore, the roll 24 inside the wire mesh 20 is rotated, and the milled rice H is moved along the inner circumferential surface of the wire mesh 20 by wind generated by the blades 24A of the roll 24. Therefore, with a simple configuration, wind can be generated inside the wire mesh 20, and the milled rice H can be moved along the inner circumferential surface of the wire mesh 20.

[0056] Furthermore, the supply unit 18 adjusts the amount of polished rice H supplied from the supply tubes 16 to the removal chamber 28, so that the volume of polished rice H supplied at one time from the pair of supply tubes 16 to the removal chamber 28 is made smaller than the volume between the inner circumferential surface of the wire mesh 20 and the rotation trajectory of the tip of the blade 24A, thereby restricting the intrusion of polished rice H radially inward from the tip of the blade 24A. This makes it possible to appropriately prevent pressure from being applied to the polished rice H by the rotating blade 24A, and appropriately prevents the temperature rise and crushing of the polished rice H.

[0057] In addition, the corners between the inner circumferential surface of the wire mesh 20 and the circumferential surface of the slits 20A are sharp. Therefore, the corners can effectively scrape off the bran from the polished rice H, and the turbidity of the soaking water for the no-rinse rice M during cooking can be effectively reduced. Moreover, by moving the polished rice H along the inner circumferential surface of the wire mesh 20, the bran can be scraped off evenly from the polished rice H.

[0058] Furthermore, the slits 20A extend in the circumferential direction of the wire mesh 20. Therefore, unlike when the slits 20A extend in the axial direction of the wire mesh 20, it is possible to appropriately prevent the polished rice H from being broken due to the corners between the inner peripheral surface of the wire mesh 20 and the peripheral surface of the slits 20A. Moreover, it is possible to prevent the slits 20A from hindering the movement of the polished rice H in the circumferential direction of the inner peripheral surface of the wire mesh 20.

[0059] In addition, the rice H is removed from the removing chamber 28 and passes through the slits 20A to the outside of the wire mesh 20. The discharged bran is sucked by the suction device 36. Therefore, the bran removed from the white rice H can be collected.

[0060] In this embodiment, the roll 24 inside the wire mesh 20 is rotated, and the polished rice H is moved along the inner circumferential surface of the wire mesh 20 by the wind generated by the blades 24A of the roll 24. However, the polished rice H may be moved along the inner circumferential surface of the wire mesh 20 by an air supply device (e.g., a compressor) serving as a wind generating mechanism that sends air from outside the wire mesh 20 into the wire mesh 20, causing the air flow to swirl around the inner circumferential surface of the wire mesh 20 in the circumferential direction.

[0061] In this embodiment, the extension direction of the slits 20A is the circumferential direction of the wire mesh 20. However, the extension direction of the slits 20A may be inclined with respect to the circumferential direction of the wire mesh 20, or the extension direction of the slits 20A may be the axial direction of the wire mesh 20.

[0062] Furthermore, in this embodiment, the corners between the inner peripheral surface of the wire mesh 20 and the peripheral surface of the slit 20A are sharp. However, the corners between the inner peripheral surface of the wire mesh 20 and the peripheral surface of the slit 20A may be rounded.

[0063] In this embodiment, polished rice H is supplied into the wire mesh 20. However, brown rice (rice) may be supplied into the wire mesh 20. In this case, the brown rice is polished inside the wire mesh 20 to produce polished rice H, and then the bran is removed from the polished rice H to produce no-rinse rice. [Explanation of symbols]

[0064] 10 Wash-free rice production equipment 18 Supply unit (supply mechanism) 20 Wire Mesh (Removal Tube) 20A Slit (removal hole) 24 Roll (wind generating mechanism, rotating body) 24A Blade (wind generating mechanism, protruding part) 36 Suction device (suction mechanism) H White rice (rice) M Wash-free rice

Claims

1. a removal tube having a removal hole and into which rice is supplied; a wind generating mechanism that generates wind in the removal tube to move rice along the inner circumferential surface of the removal tube, thereby removing bran from the rice around the removal hole of the removal tube; A no-rinse rice manufacturing device equipped with:

2. The wind generating mechanism includes: a rotating body provided in the removal cylinder and rotated; a protrusion provided on the rotating body, the protrusion moving the rice along the inner circumferential surface of the removal tube by wind generated in the removal tube as the rotating body rotates; The rinse-free rice producing apparatus according to claim 1,

3. The no-rinse rice producing device according to claim 2, wherein the intrusion of rice into an area radially inward of the tip of the protrusion is restricted.

4. The no-rinse rice producing device according to claim 1, wherein a corner between the inner peripheral surface of the removal tube and the peripheral surface of the removal hole is sharp.

5. The no-rinse rice producing device according to claim 1 , wherein the removal hole extends circumferentially of the removal tube.

6. 2. The no-rinse rice producing apparatus according to claim 1, further comprising a suction mechanism for sucking up the bran removed from the rice and discharged outside the removal tube through the removal hole.

7. The no-rinse rice manufacturing apparatus according to claim 1, further comprising a supply mechanism for adjusting the amount of rice supplied into the removal tube.

8. a removal cylinder having a removal hole; a wind generating mechanism for generating wind within the removal tube; Equipped with Supplying rice into the removal tube; The wind generating mechanism generates wind in the removal tube, and the rice is moved along the inner circumferential surface of the removal tube, so that the bran is removed from the rice by the periphery of the removal hole of the removal tube. Wash-free rice production method.

9. The wind generating mechanism includes: A rotor provided in the removal cylinder; A protrusion provided on the rotating body; having The rotating body is rotated, and the protruding portion generates wind in the removal tube, so that the rice is moved along the inner circumferential surface of the removal tube. The method for producing no-wash rice according to claim 8.

10. The method for producing no-wash rice according to claim 9, wherein the intrusion of rice into an area radially inward of the tip of the protrusion is restricted.

11. The method for producing no-wash rice according to claim 8, wherein a corner between an inner peripheral surface of the removal tube and a peripheral surface of the removal hole is sharp.

12. The method for producing no-wash rice according to claim 8, wherein the removal hole extends in the circumferential direction of the removal tube.

13. 9. The method for producing no-wash rice according to claim 8, wherein a suction mechanism sucks up the bran removed from the rice and discharged to the outside of the removal tube through the removal hole.

14. The method for producing no-wash rice according to claim 8, wherein a supply mechanism adjusts the amount of rice supplied into the removal tube.

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