JPS6352535B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method and apparatus for polishing sake rice for obtaining ultra-shiny unwashed white rice used as sake rice.

BACKGROUND ART As a conventional rice polishing machine for sake rice, a dry rice polishing method is known in which polished rice is polished using a brush or the like.

However, the smoothness of the surface of polished sake rice is extremely low, which causes load fluctuations due to the squeaks of the polished sake rice, or reduces the flow of rice grains, resulting in unstable machine operation. In addition, the micro grooves on the surface of the rice grains are not uniform, so
A problem has arisen in that free bran adhering to the microgrooves cannot be completely removed.

In addition, a method of processing polished rice in which bran is mixed with polished rice and then rubbed using a rice milling machine was disclosed in Japanese Patent Application Laid-Open No. 57-209644.
It has been proposed as a publication number.

However, since the bran mixed in with this polished rice is bran separated from brown rice during milling or new bran separated from another brown rice, this bran is not starchy, and when mixed into polished rice, The oil and nutrients contained in the bran were transferred to the polished rice, changing the quality of the polished rice as sake rice, and this method was not suitable as a method for polishing sake rice.

Problems to be Solved by the Invention The first object of the present invention is to solve the above-mentioned problems by mixing fine powder bran made of starch with refined sake rice in the pre-process of the rice polishing process to create an appropriate smooth surface. In addition to incorporating the finishing process, the subsequent rice polishing process is a wet process, so that the oil and nutrients in the bran separated from the brown rice do not transfer to the polished sake rice, and the quality of the polished sake rice does not change, making it possible to use it as a polished sake rice. Suitable for sake rice polishing, where the fine grooves on the surface of the rice grains are made uniform, and the wet rice polishing process completely removes loose bran, which could not be completely removed with the conventional dry rice polishing method, resulting in highly accurate wash-free rice. Our goal is to provide the rice method.

The second object of the present invention is to supply polished sake rice and starchy fine powder bran at the same time, mix the fine powder bran with the polished sake rice to ensure friction polishing, and improve the quality of the polished sake rice. The fine grooves on the surface are made uniform without changing the surface to improve smoothness, and there is no load fluctuation due to the squeak of polished sake rice that was seen in conventional dry rice polishing equipment, and there is no drop in the flow of the rice grains, making it easier to operate the machine. It is an object of the present invention to provide a rice grinding device for sake rice that ensures the above stability and is efficient from the viewpoint of power energy saving and reuse of finely ground bran.

Means for Solving the Problems The method of polishing sake rice of the present invention involves mixing polished sake rice with fine powdered bran made of starch and performing friction polishing to make the micro grooves on the surface of the polished sake rice uniform. After improving the smoothness by separating the finely ground rice bran from the polished sake rice, the polished sake rice is subjected to friction grinding by applying moist air, and immediately the resulting rice bran is removed by wet grinding. The structure is characterized in that the rice is finished without being washed.

Further, the sake rice grinding device of the present invention is provided with a polished sake rice supply hopper and a supply port for fine powder bran made of starchy material, and the polishing rice is provided below the polished sake rice supply hopper and the fine powder bran supply port. A perforated rice polishing cylinder is arranged above and below the inside of the rice polishing machine, and a friction trochanter for smooth surface finishing is installed in the upper perforated rice polishing cylinder connected to the polished sake rice supply hopper and the fine powder bran supply port. is rotatably arranged, the outside of the upper porous rice polishing cylinder is connected to the supply port via a suction device, and the discharge port of the upper porous rice polishing cylinder is communicated with the supply port of the lower porous rice polishing cylinder. A hollow rice polishing friction trochanter having a through hole is rotatably arranged in the lower porous rice polishing cylinder, a humidified air supply device is connected to the hollow part of the rice polishing friction trochanter, and the lower The structure is characterized in that the outside of the multi-hole rice polishing cylinder is connected to a suction device.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

In the figure, 1 is a funnel-shaped polished sake rice supply hopper, a rice polishing machine 2 is provided below the polished sake rice supply hopper 1, and a flow port serving as a supply port is provided inside the polished sake rice supply hopper 1. A partition plate 3 is provided in the vertical direction directly below 1a, the inside of the refined sake rice supply hopper 1 is divided by the partition plate 3, and one side 1b of the partition plate 3 in the refined sake rice supply hopper 1 is provided with a grinding type plate (not shown). Rice grains 4 of polished sake rice supplied from the rice milling machine are loaded, and on the other side 1c of the partition plate 3 in the polished sake rice supply hopper 1, white rice bran 6 such as Ginjo bran, which is starchy fine powder bran, is placed. A supply device 5 is provided, the supply device 5
A motor 7 for driving the supply device 5 is provided.

The rice polishing machine 2 is divided into an upper and a lower part, and an upper perforated rice polishing cylinder 11 that communicates with the flow outlet 1a is installed horizontally on the upper side 2a of the rice polishing machine 2, and a smooth surface is installed inside the upper perforated rice cylinder 11. A finishing friction roller 12 is rotatably arranged, and an upper perforated rice polishing barrel 11 is provided on the lower side 2b of the rice polishing machine 2.
A communication port 1 serving as a supply port communicating with the discharge port 11a of the
A lower porous rice polishing cylinder 13 having a diameter of 3a is horizontally suspended, and a hollow rice polishing friction trochanter 14 having a through hole 14a is rotatably disposed inside the lower perforation rice polishing cylinder 13.

The upper part of the other side 1c of the polished sake rice supply hopper 1, where the supply device 5 is provided, and the outer peripheral space of the upper porous rice polishing cylinder 11 are connected through a circuit 8, and a suction device is provided in the middle of the circuit 8. A suction fan 9 is provided, and the suction fan 9 sucks the outer circumferential space of the upper porous polished rice cylinder 11. A cyclone rice bran collector 10 is installed downstream of the suction fan 9 in the circuit 8.
is provided.

The friction trochanter 12 for smooth surface finishing is formed hollow, and a spiral protrusion 12a is provided on the circumferential surface of the friction trochanter 12 for smooth surface finishing below the flow outlet 1a.
A blowing hole 12c is provided near the discharge port 11a of the friction trochanter 12 for smooth surface finishing.
An axial protrusion 12b is provided on the circumferential surface of No. 2 along the jet nozzle 12c.

The air outlet 12c of the friction rotor 12 for smooth surface finishing is communicated with the outside of the machine via the hollow part of the friction rotor 12 for smooth surface finishing.

A spiral protrusion 14b is provided below the communication port 13a on the circumferential surface of the friction trochanter 14 for polishing rice, and a ridge 14c is provided near the discharge part 16 of the friction trochanter 14 for polishing rice along the through hole 14a. is provided.

Note that, although the through holes 14a of the friction roller 14 for polishing rice are often slits (elongated holes), they are not limited to this.

The through hole 14a of the friction trochanter 14 for polishing rice is connected to a mist generating nozzle 20 serving as a humidified air supply device, and the mist generating nozzle 20 is connected to a water tank 18 and an air compressor 19, respectively.

Reference numeral 15 denotes a screw conveyor, which connects the discharge port 11a of the upper porous rice barrel 11 and the communication port 13a of the lower porous rice barrel 13.

16 is a discharge part of the lower porous rice polishing barrel 13 of the rice polishing machine 2, and 17 is a discharge part of the bran outside of the lower porous rice polishing barrel 13.

21 is a fan serving as a suction device, and fan 2
1, the air around the outside of the lower porous polishing cylinder 13 is sucked.

Note that the upper porous polished rice cylinder 11 and the lower porous polished rice cylinder 13 are not limited to those made of wire mesh, but may be made of porous materials including a plate with many holes.

Next, the operation of this embodiment will be explained.

Yield is 70-75% when rice polisher 2 is running.
The rice grains 4 of polished sake rice are fed to one side 1b of the polished sake rice supply hopper 1, and at the same time, the motor 7 drives the feeding device 5 for white bran 6 on the other side 1c of the polished sake rice supply hopper 1.

At this time, the rice grains 4 of the refined sake rice in the refined sake rice supply hopper 1 and the white rice bran 6, which is fine powder bran made of starch, pass through the outlet 1a of the refined sake rice supply hopper 1 and pass through the upper porous hole below it. The rice flows down into the polishing rice cylinder 11 and is mixed by the spiral protrusion 12a of the smooth surface finishing friction roller 12 rotatably provided in the upper porous polishing rice cylinder 11. The protrusion 12b in the axial direction on the circumferential surface of the child 12 is reached, and this protrusion 12b
While being subjected to a polishing action by the rotational movement of the polishing machine, the polishing rice is fed under pressure through the upper porous polishing cylinder 11 for finishing a smooth surface toward the discharge port 11a.

At this time, the rice grains 4 of the refined sake rice between the spiral protrusions 12a of the friction trochanter 12 for smooth surface finishing are mixed with the white rice bran 6, and the friction and polishing with the friction trochanter 12 for smooth surface finishing are performed. The rice grains 4 of white sake rice are properly subjected to friction between each other, and furthermore, the rice grains 4 of white sake rice between the friction trochanter 12 for smooth finishing and the upper porous polishing rice tube 11 are also the same rice grains of white sake rice. 4 and white bran 6 are mixed together, and the polished sake rice grains 4 are placed between the spiral protrusions 12a of the friction trochanter 12 for a smooth surface finish and are force-fed by the helical protrusions 12a. As a result, the friction rollers 12 are sequentially rubbed, and between the axial protrusions 12b of the friction roller 12 for smooth surface finishing,
It is sequentially rubbed by the rice grains 4 of polished sake rice that are stirred and rotated by b, and is also rubbed by the upper porous polishing rice cylinder 11 for smooth finishing.

In this way, the rice grains 4 of polished sake rice in the upper porous polishing rice cylinder 11 are mixed with each rice grain and the white bran 6, and the rice grains 4 of polished sake rice are mixed with each other, and the friction trochanter 12 for smooth surface finishing Then, the rice is appropriately friction-polished using the upper perforated polishing cylinder 11 for smooth surface finishing, and finally each surface is finished to a smooth surface, and at the end of the process, white rice bran 6
Most of the rice grains are removed from the porous portion of the upper porous polished rice cylinder 11 to the outside via the suction fan 9, and the rice grains with a smooth surface are discharged from the discharge port 11a to the starting end of the screw conveyor 15. conveyor 1
5 through the communication port 13a to the lower porous polishing rice cylinder 1.
Sent within 3.

The surface of the rice grains 4 of polished sake rice, which has gone through the smoothing process using the smoothing friction roller 12 in the upper porous polished rice cylinder 11, has uniform micro grooves and has a smooth surface.

Rice grains 4 of refined sake rice with a smooth surface supplied into the lower porous rice polishing cylinder 13 are transferred to the friction trochanter 1 for rice polishing.
4 toward the discharge section 16 in the same manner as in the smooth surface finishing process.

At this time, the water tank 18 and the air compressor 19 supply humid air made of humidified air from the mist generating nozzle 20 into the hollow part of the friction trochanter 14 for polishing rice. It is sprayed from the holes 14a onto the surface of the rice grains 4 of refined sake rice, moistening the coated part of the white rice bran 6 remaining in the micro grooves on the surface, softening it, and applying its adhesive action to the coating part of the white rice bran 6 remaining in the micro grooves on the surface. The adhering free bran is completely removed, and the free bran is immediately expelled from the porous portion of the lower porous rice barrel 13 via the fan 21.

In addition, from the mist generating nozzle 20 to the friction trochanter 1 for polishing rice,
The moisture added by the humidified air injected into the hollow part of 4 is not absorbed and permeated into the inner substance of the rice grain, so the inner substance of the rice grain is protected, and the surface of the rice grain in the moist state is friction-polished due to mutual friction between the grains. The rice is then polished to become super glossy, unwashed sake rice.

Friction trochanter 1 for polishing rice in this lower porous rice polishing tube 13
Rice grains 4 of refined sake rice that have undergone the polishing process are taken out from the discharge section 16.

In the smooth surface finishing process, the suction action of the suction fan 9 causes the air outlet 1 of the friction trochanter 12 for smooth surface finishing to
Together with the air introduced from 2c, the white rice bran 6 is sucked from the circumferential surface of the upper porous polished rice cylinder 11 and returned to the cyclone rice bran collector 10, where it is recycled and used.

Effects of the Invention As described above, according to the method for polishing sake rice of the present invention, a suitable smooth surface finishing process is carried out by mixing starchy fine powder bran with polished sake rice in the pre-process of the rice polishing process. At the same time, the subsequent rice polishing process is a wet process, and the rice bran separated from the brown rice is not mixed into the polished sake rice, so the oil nutrients of the rice bran separated from the brown rice do not transfer to the polished sake rice. The quality of polished sake rice does not change, making it suitable for sake rice.The fine grooves on the surface of the rice grains are made uniform, and the wet rice grinding process completely removes loose bran, which could not be completely removed by the conventional dry rice grinding method. It is possible to obtain high-precision, unwashed rice.

Further, according to the sake rice polishing device of the present invention, polished sake rice and starchy fine powder bran can be simultaneously supplied from the supply port into the upper porous rice cylinder. By using a friction trochanter for smooth surface finishing, fine grained bran is mixed with polished sake rice to ensure friction polishing, making the micro grooves on the surface uniform and improving the smoothness without changing the quality of the polished sake rice. This eliminates the load fluctuations caused by the squeaking of refined sake rice seen in conventional dry-type rice grinding equipment, and there is no drop in the fluidity of the rice grains, ensuring operational stability of the machine. It is efficient from the viewpoint of reusing bran, etc.

[Brief explanation of drawings]

The figure is a cutaway side view of essential parts of the sake rice polishing apparatus according to the embodiment of the present invention. 1... Refined sake rice supply hopper, 1a... Outlet, 1b... One side, 1c... Other side, 2... Rice grinder, 2a... Upper side, 2b... Lower side, 3... Partition plate , 4... Rice grains of refined sake rice, 5... Feeding device, 6
... Shiranuka, 7 ... Motor, 8 ... Circuit, 9 ... Suction fan, 10 ... Cyclone bran collector, 11 ...
...Upper porous rice cylinder, 11a...Discharge port, 12...
Friction trochanter for smooth surface finishing, 12a...Spiral protrusion, 1
2b... protrusion, 12c... blowhole, 13... lower porous rice polishing tube, 13a... communication port, 14... friction trochanter for rice grinding, 14a... through hole, 14b... spiral protrusion , 14c... protrusion, 15... screw conveyor, 16... discharge section, 17... bran discharge section, 18
...Aquarium, 19...Air compressor, 20...
Fog generation nozzle, 21...fan.

Claims (1)

[Scope of Claims] 1. Polished sake rice is mixed with starchy fine powder bran and subjected to friction polishing to make the fine grooves on the surface of the polished sake rice uniform and improve its smoothness. The fine bran is separated from the rice, and then the polished sake rice is subjected to friction grinding by applying moist air, and the resulting rice is wet-polished to immediately discharge the generated bran to finish it into wash-free rice. How to polish rice. 2. A polished sake rice supply hopper and a supply port for fine powder bran made of starchy material are provided, and a rice polishing machine is provided below the polished sake rice supply hopper and the fine powder bran supply port,
Perforated rice polishing cylinders are disposed at the top and bottom of the rice polishing machine, and a friction trochanter for smooth surface finishing is freely rotatable in the upper perforated rice polishing cylinder connected to the polished sake rice supply hopper and the fine powder bran supply port. and connecting the outside of the upper porous rice barrel to the supply port via a suction device;
The discharge port of the upper porous rice polishing cylinder is connected to the supply port of the lower porous rice polishing cylinder, and a hollow rice polishing friction trochanter having a through hole is rotatably disposed in the lower porous rice polishing cylinder, and the A device for polishing rice for sake rice, characterized in that a humidified air supply device is connected to the hollow part of the friction trochanter for polishing rice, and the outside of the lower porous rice polishing cylinder is connected to a suction device.