JPH01180254A - Circulation-type vertical-shaft rice milling machine - Google Patents

Abstract

PURPOSE:To increase the hulling and milling efficiency and to prevent the infiltration of bran into milled rice by connecting a bran removing chamber formed on the periphery of a perforated-wall bran-removing and milling cylinder and an exhauster for sucking dust through a bran collecting passage, and removing bran by ventilation. CONSTITUTION:The rice grains are sent to a spiral rotor 6 from a rice grain supply port 10, lifted by the rotor 6, hulled, and milled in the milling chamber 9 consisting of the perforated-wall bran-removing and milling cylinder 4 and friction milling rotor 8 as the essential parts. The hulled and milled rice grains are discharged from a rice-grain outlet 11 while being prevented from outflowing by the baffle 38 of a milling-degree adjuster 30, and returned to a rice-grain vessel 2. The exhauster 22 is operated at this time, hence the bran removing action is accelerated by the bran removing air sucked from an air vent and injected from an air injection port 12, and the dust such as bran generated in the hulling and milling is sent to a bran collecting chamber 21 through the penetrating hole of the cylinder 4, a bran removing chamber 14, a bran collecting passage 15, and a bran discharge chamber 16.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a circulating vertical shaft that supplies rice grains from the lower part of the milling chamber, mills them, and circulates the rice grains discharged from the upper part to finish the milling to a predetermined precision. Regarding type rice polishing machine.

[Conventional technology]

A conventional circulating rice milling machine will be explained with reference to FIG.

Reference numeral 42 is a circulation type horizontal shaft type rice milling machine, and a grain tank 43
A porous wall for removing bran 44 is provided at the bottom of the porous wall for removing bran 4-4.
A refined trochanter 46 is mounted on a horizontal shaft 45 provided above.

Reference numeral 47 is the whitening room 1, whitening room 47. Rice grain flow path 4
8. Above the rice grains, the ascending path 49 and the grain tank 43 form a circulation path for the rice grains. The lower part of the porous wall 44 for removing bran is used as a bran collecting chamber 50
51 is a discharge gutter.

The rice grains in the grain tank 43 flow into the milling chamber 47 from the rice grain flow path 48, are friction polished by the polishing trochanter 46, and are returned to the grain tank 43 from the rice grain ascending path 49. The rice grains that have been milled to a predetermined degree of polishing through this circulation process several times are discharged from the discharge gutter 51 to the outside of the machine. In addition, dust such as bran generated during milling falls through the holes in the porous wall for removing bran 44 and is collected in the bran collecting chamber 51.

However, in the conventional circulating rice mill like the one mentioned above,
Since the bran removal effect is a natural fall type, sufficient bran removal cannot be performed. Therefore, there were problems in that bran was present in the rice grains during milling, inhibiting the milling process and reducing the milling efficiency, and the rice bran was mixed into the polished rice, resulting in unpalatable rice even when cooked.

[Problem that the invention seeks to solve]

This invention solves the above-mentioned problems and provides a circulating vertical shaft that completely removes the bran, improves the milling efficiency, and produces beautiful polished rice by performing the bran removal process through ventilation. The purpose is to provide a type rice milling machine.

[Means for solving problems]

In order to achieve this object, the present invention has the following configuration.

A part of the cylinder installed upright in the machine frame that forms the container for rice grains is used as a porous-walled bran removal and polishing cylinder, and a vertical shaft rotatably installed inside the cylinder has a spiral rotor and a polishing roller attached to the top of the spiral rotor. The lower part of the milling chamber, which mainly consists of a porous-walled bran removal tube and a milling trochanter, is connected to a rice grain supply section and an upper section to a rice grain discharge section. A circulating vertical shaft type rice milling machine is constructed by providing a polishing degree adjustment device for adjusting the polishing degree of the rice milling machine. The bran removing chamber formed on the outer periphery of the porous-walled bran removing and polishing cylinder is connected to a blower for sucking dust such as bran through a bran collection channel.

[For production]

The rice grains supplied from the rice grain supply section to the spiral trochanter are lifted from the spiral trochanter and milled in a milling chamber whose main parts include a porous-walled rice bran removal polishing cylinder and a milling trochanter. The milled rice grains are
The rice grains are discharged from the rice grain discharge section and returned to the rice grain container while the outflow is suppressed by the polishing level control device. The rice grains are then circulated within the rice grain container until they are milled to a predetermined milling precision.

In addition, dust such as bran generated during polishing is sucked by the blower through the holes in the porous-walled bran removing and polishing tube through the bran collection channel.

〔Example〕

Embodiments of the invention will be described with reference to the drawings. 1st
The figure is a side sectional view of a circulation type vertical rice milling machine implementing the present invention.
FIG. 2 is an enlarged view of the whiteness adjustment device.

Reference numeral 1 denotes a circulating vertical shaft type rice polishing machine, in which a spiral rotor 6 is installed at the bottom of a main shaft 5 rotatably installed in a perforated-walled bran removal and polishing cylinder 4 installed upright in the center of a machine frame 3 that forms a rice grain container 2. , a friction polishing trochanter 8 having a stirring protrusion 7 on its upper part is mounted on the shaft. The lower part of the whitening chamber 9, whose main parts are a porous-walled bran removal whitening cylinder 4 and a friction whitening trochanter 8, is a rice grain supply port 10, and the upper part is a rice grain discharge port 11.
Please contact each of them.

Reference numeral 12 denotes a blowing hole provided on the friction whitening trochanter 8, which is formed by the porous-walled bran-refining cylinder 4 and the cylinder body 13.

A gap is formed in the bran removal chamber 14. The rice bran removal room 14 is connected to the rice bran collection room 15 from the rice bran removal room 16. The bran collector 18 passes through the blast pipe 17
It is connected to the suction port 19.

A filter plate 52 for removing rice bran is mounted on the upper part of the rice bran collecting device 18, and the upper part thereof is formed as a ventilation chamber 20, and the lower part thereof is formed as a rice bran collecting chamber 21. Reference numeral 22 is an exhaust fan, and the exhaust I! 22 communicates with the ventilation chamber 20 via an air passage 23, and 24
is a through hole for discharging the clear M after removing the bran.

A blade wheel 25 for scraping out bran is attached to the main shaft 5 at the bottom of the spiral rotor 6.
Further, a pulley 26 provided at the lower end of the main shaft 5 and a pulley of an electric motor (not shown) are connected via a belt 27. Refined product outlet 2 provided at the bottom of the rice grain container 2
8 is fitted with a rice discharge valve 29, and the refined product discharge port 28 is connected to the discharge gutter 29.
is in contact with.

Reference numeral 30 denotes a polishing level adjustment device, and a rotating rod 32 is rotatably connected to a fixed base 31 attached to one side wall of the machine frame 3 via a shaft 33. A shaft 36 with a stopper 35 on which a weight 34 is mounted is provided at the tip of the rotating rod 32, and a ball 37 at the lower end of the shaft 36 is loosely fitted into a resistor 38. A large number of ventilation holes are provided in the resistor 38, and the resistor 38 is slidably fitted into an air intake pipe 39 at the upper end of the friction whitening trochanter 8.

Next, the operation of the above configuration will be explained. When an electric motor (not shown) is driven, the rice grains in the rice grain container 2 are sent from the rice grain supply port 10 to the spiral rotor 6, and are lifted by the spiral rotor 6 and rubbed against the porous-walled bran removal and polishing cylinder 4. The semen is extracted in a semen chamber 9 whose main part is a semen trochanter 8. The milled rice grains are discharged from the rice grain outlet 11 and returned to the rice grain container 2 while their outflow is suppressed by the resistor 38 of the milling degree adjusting device 30.

Then, by operating the exhaust fan 22, the resistor 38
The air is sucked from the air vent of the air outlet 1 through the air suction pipe 39.
The rice bran removal air blowing out from the rice bran can reduce the rise in rice temperature and promote the bran removal effect. Dust such as bran generated by the polishing action in the polishing chamber 9 is discharged into the bran removing chamber 14 through the through hole of the porous-walled bran removing and polishing cylinder 4.

Dust such as bran discharged to the bran removal chamber 14 is sent from the bran collection channel 15 to the bran removal chamber 16, scraped out by the impeller 25, and sent to the bran collection chamber 21 via the air pipe 17 and the suction port 19. It will be done. Dust such as bran separated by the bran removal filter plate 52 is deposited in the bran collection chamber 21, and purified air is discharged from the exhaust chamber 20 through the air passage 23 and out of the machine from the through hole 24.

The polished rice that has been circulated through the milling chamber 9 several times and milled to a predetermined milling precision is discharged from the refined product outlet 28 through the discharge gutter by rotating the discharge valve 29 to the outside of the machine.

The degree of polishing of rice grains is adjusted using the weight 34 of the degree of polishing adjustment device 30.
Depends on the number of sheets. In other words, for example, set the pounding precision too high (
If not, pounding is performed with one weight 34A, and if the pounding accuracy is to be increased, a weight 3'4B is added, and if the pounding accuracy is to be increased, a weight 34G is added.

Next, when replacing the friction polishing trochanter 8, the porous-walled bran removal cylinder 4, etc., or cleaning the rice grain container 2, this can be done very easily by rotating the polishing level adjustment device 30. can. That is, first remove the weight 34 from the shaft 36,
Next, the rotating rod 32 is rotated about the shaft 33 to the position indicated by the two-dot chain line. Then, the resistor 38 separates from the suction pipe 39, and the top surface of the rice grain container 2 is opened, making it easy to replace the friction polishing trochanter 8, etc. and to clean the rice grain container 2 in a short time. Can be done.

Further, FIG. 3 shows another embodiment of the present invention, in which the friction whitening trochanter 8 has three stirring protrusions 7A-8, and the maximum diameter portions r1 to r3 of each stirring protrusion A-8 are as follows. Maximum diameter part "1" to "3"
Formed so that it gradually decreases in the process of reaching .

The brown rice is transported to the milling chamber 9 by the spiral trochanter 6, and is milled by the milling action generated by the rotation of the friction milling trochanter 8. At that time, each stirring protrusion 7A-C as shown in FIG.
Since the maximum diameter portions r1 to r3 are formed so as to gradually decrease in the process of reaching the next maximum diameter portions r1 to r3, for example, the pressure state at point A and point B in the stirring protrusion 7A is balanced (the stirring The same applies to protrusions B and C). Therefore, the rice grains at point B do not form a line, and unmilled rice grains do not move upward along the stirring protrusions A to C and are discharged out of the machine.

Further, FIG. 4 shows another embodiment of the present invention, in which a large number of blowholes 41 are provided around the entire circumference of the friction whitening trochanter 8, so that the bran removal effect can be effectively performed.

(Effects of the Invention) According to the circulation type vertical rice milling machine of the present invention, the bran removing chamber formed on the outer periphery of the porous-walled bran removing and polishing cylinder and the blower for sucking dust such as bran are connected through the bran collection path. Because it is configured to contact
The bran removal action can be performed by a ventilation method, and dust such as bran can be completely discharged from the machine. Therefore, the rice grains being milled are not interposed and the milling is not inhibited, improving the milling efficiency, and the mixing of rice bran in the polished rice can be completely prevented, resulting in delicious rice when cooked.

4. Brief description of the drawings Figure 1 is a side sectional view of a circulating vertical shaft type rice mill embodying the present invention, Figure 2 is an enlarged view of the polishing level adjustment device, and Figures 3 and 4 are other implementations. A diagram showing an example, FIG. 5, is a diagram showing a conventional example.

1...Small rice polishing machine, 2...Container for rice grains, 3...Machine frame, 4...Porous wall bran removal polishing cylinder, 5...Main shaft, 6...
・Spiral trochanter, 7... Stirring protrusion, 8... Friction polishing trochanter, 9... Refining chamber, 10... Rice grain supply port, 11...
Rice grain discharge port, 12... Blower port, 13... Cylindrical body, 14
...Blank removal room, 15...Shinnuji, 16...Blank removal,
17... Air pipe, 18... Bran collecting device, 19... Suction port, 20... Ventilation chamber, 21... Bran collecting chamber, 22...
・Exhaust fan, 23... Air path, 24... Ventilation hole, 25...
・Purchase car, 26...Pulley, 27...V belt, 2
8... Refined product discharge port, 29... Discharge valve, 30... Polishing level adjustment device, 31... Fixed stand, 32... Rotating rod,
33... Axis, 34... Weight, 35... Stopper, 36... Axis, 37... Ball, 38... Resistor, 3
9... Air suction pipe, 40... Discharge gutter, 41... Blower port, 42... Circulating horizontal shaft type rice mill, 43... Grain tank, 44... Porous wall for bran removal , 45...horizontal axis, 46...
... Refining trochanter, 47 ... Refining room, 48 ... Rice grain flow path, 49 ... Rice grain ascending path, 50 ... Collection 1g seedling, 51
...Discharge gutter, 52... Filter plate for removing bran.

Claims (3)

[Claims] (1) A part of a cylinder installed upright in a machine frame forming a container for rice grains is used as a porous-walled bran removal and polishing cylinder, and a spiral rotor is attached to a vertical shaft rotatably provided in the cylinder, and the spiral A milling trochanter is inserted into the upper part of the trochanter, and the lower part of the milling chamber, whose main parts are the porous-walled bran removal tube and the milling trochanter, is connected to the rice grain supply section, and the upper part is connected to the rice grain discharge section. In a circulation type vertical rice milling machine, which is equipped with a polishing level adjustment device above the discharge section to adjust the polishing level of rice grains, dust such as rice bran is sucked through a bran removal chamber formed on the outer periphery of a porous-walled bran removal polishing cylinder. A circulating vertical shaft type rice mill characterized in that the blower is connected to the rice bran through a rice bran collecting channel. (2) The cross-sectional shape of the outer peripheral surface of the body of the refined trochanter has a plurality of maximum diameter parts, and is formed so that the radius on the rear side in the rotational direction of the maximum diameter part gradually decreases in the process of reaching the next maximum diameter part. A circulating vertical shaft type rice milling machine according to claim (1). (3) The circulating vertical shaft type rice milling machine according to claim (1) or (2), wherein the polishing trochanter is provided with a large number of blowholes.