JPH0746350Y2 - Rice mill - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice polishing machine.

[0002]

2. Description of the Related Art In a conventional rice milling machine, for example, a circulation type rice milling machine, a whitening roll is inserted into a whitening chamber equipped with a bran removal net, and a drive motor is provided on the drop gutter side of the whitening chamber. The rear end of the whitening roll is directly connected to the front end of the rotary shaft.
Then, the grains in the tank are dropped into the whitening chamber through the drop gutter, and then the grains are pressure-fed by the whitening roll rotated by the drive motor while being pressure-fed to the vertical circulation path, and by the bran removal net during the pressure feeding. The bran is removed. Furthermore,
The grain returns to the inside of the tank while rising in the vertical circulation path, falls again into the fall trough, and circulates.

[0003]

[Problems to be Solved by the Invention] The conventional rice milling machine has the following problems. a: Since the grains in the whitening chamber are pressed by the whitening roll,
The temperature of the grain rises. Therefore, the generated white rice bran may adhere to the whitening roll to clog the whitening chamber. b: Good removal of bran by rotation of whitening rolls. The bran adhered to the grain is difficult to separate because the bran is difficult to remove, so it is difficult to obtain clean white rice. c: Rice bran that has fallen from the bran removal net is deposited in the bran box, but does not collapse due to the angle of repose when it has a predetermined mountain shape. Therefore, in a small bran box, the operator must frequently replace the bran box, so that the rice polishing work cannot be completely automated. Therefore, if a large bran box is used to solve this problem, the machine height becomes high and the rice milling machine becomes large. d: The temperature of the drive motor rises and overheats, causing a failure. To prevent this, the motor can be operated only with a small output.

In view of the above circumstances, the present invention aims to prevent the temperature rise of the grain and the drive motor. Another purpose is to clean the polished rice and prevent the rice bran accumulated in the bran box from becoming piled up.

According to this invention, a whitening roll is inserted in a whitening chamber equipped with a bran removal net, a drive motor is provided on the drop gutter side of the whitening chamber, and the rear end of the rotary shaft of the drive motor is provided after the whitening roll. The end portion is directly connected, the outer periphery of the drive motor is covered with a motor case through an air passage, and a fan that connects the air passage to the rear end portion of the rotating shaft is provided to discharge the air passage and the drop gutter. In a rice milling machine communicating through an outlet: Inside the drop gutter
Regulates the flow of grains and discharges from the discharge port into the falling gutter.
Wind flow guidance that controls the flow direction of the outside air discharged downward
By a rice milling machine characterized in that a plate is provided at the discharge port,
It is intended to achieve the above object.

[0006]

[Operation] When the drive motor is started and the fan is rotated,
Outside air enters the air duct. This outside air is pressure-fed from the discharge port into the drop gutter through the air passage. Then, the outside air enters the whitening chamber while flowing down in the falling trough, contacts the grains in the whitening chamber, and goes through the bran removal net to the bran box. Then, after colliding with the upper surface of the rice bran accumulated in the bran box, the rice bran is discharged from the exhaust port to the outside of the machine.

[0007]

Embodiments of the present invention will be described with reference to the accompanying drawings. The circulation type rice milling machine 1 has a whitening roll 4 inserted into a whitening chamber 3 provided with a bran removal mesh 2, a drive motor 6 is provided on a drop gutter 5 side of the whitening chamber 4, and a rotary shaft 7 of the motor 6 is provided. The rear end portion 4b of the whitening roll 4 is directly connected to the front end portion 7a. The outer periphery 6a of the drive motor 6 is covered with a motor case 9 through an air passage 8. At the rear portion 9a of the motor case 9, an intake port 10 communicating with the air passage 8 is provided.

A fan 11 communicating with the air passage 8 is provided at the rear end portion 7b of the rotary shaft 7, and the air passage 8 and the drop gutter 5 are provided.
And are communicated with each other through the discharge port 13. An airflow guide plate 13a is provided downward on the discharge port 13 and the flow direction of the outside air S discharged from the discharge port 13 into the drop gutter 5 is controlled downward. The outside air S discharged to the drop gutter 5 passes through the polishing chamber 3 and further through the bran removal net 2 and then flows into the bran removal chamber 14.
An exhaust port 15 for discharging the outside air S is provided in the bran removing chamber 14.
Is provided, and the bran box 16 is housed therein.

Next, the operation of this embodiment will be described. When a predetermined amount of grain K is put in the tank 17 and the drive motor 6 is started, the whitening roll 4 and the fan 11 rotate at the same time. Then, the grain K passes through the falling gutter 5 and passes through the polishing chamber 3
Then, the whitening chamber 3 is dropped into the vertical circulation path 18 while being pressurized by the whitening roll 4 inside the whitening chamber 3. At this time, the grain K advances in the whitening chamber 3 while being debranched by the debranching net 2. Then, the grain K rises while receiving the resistance of the protrusion resistor 19 in the vertical circulation path 18 and returns to the tank 17.
It falls into the fall gutter 5 again. Grain K is refined while circulating in this way.

The outside air S is sucked into the intake port 1 by the rotation of the fan 11.
When sucked into the motor case 9 from 0, part of the outside air S flows into the drive motor 6 to cool the inside, and the other part cools the outer periphery 6a of the drive motor 6 while passing through the air passage 8. . Then, the outside air S passing through the air passage 8 is blown into the drop gutter 5 while being guided by the air flow guide plate 13a from the discharge port 13.

The outside air S blown into the drop gutter 5 becomes pressured air and moves into the polishing chamber 3 and the grain K in the polishing chamber 3
Contact with. Therefore, the grain K is cooled and the bran attached to the grain K is easily separated.

The outside air S that has come into contact with the grain K enters the bran removal chamber 14 through the bran removal net 2 and collides with the bran 20 which is a mountain M in the bran box 16 and scrapes the mountain M. After that, the gas is discharged from the exhaust port 15. Therefore, the bran 20 stored in the bran box 16
The upper surface F of is in a nearly horizontal state as shown by the chain line.

The present invention can be applied not only to the circulation type rice milling machine but also to the single-passing type rice milling machine, but in the case of this single-passing type rice milling machine, the outlet side of the whitening chamber is upward. By tilting like this (so-called tilt type rice milling machine), it is possible to further improve the whitening efficiency.

[0014]

[Effects of the Invention] Since the present invention is constructed as described above, it has the following remarkable effects. When the fan rotates, the outside air is sucked into the motor case and the drive motor is cooled. Therefore, since overheating does not occur, powerful rice polishing can be performed using a low output drive motor. B. Outside air in the air duct is guided by the wind flow guide plate and falls in the gutter
Flows down into. Therefore, the outside air flows through the fall trough.
Flows in the same direction as the descending grain and pulls in the grain
Since it heads to the polishing room while doing so, it facilitates the flow of grains
Can be made . C. The outside air discharged from the discharge port flows into the polishing chamber,
Contact with grain. Therefore, the grains in the whitening chamber are cooled by the outside air, so that the temperature rise of the grains can be prevented. In addition, since the bran adhered to the grain is also easily peeled off, the bran-removing effect can be improved. D. The outside air in contact with the grains blows through the bran removal net into the bran removal chamber and collides with the upper surface of the bran in the bran box. Therefore, since the bran does not pile up like a mountain, the bran can be accommodated over the entire volume of the bran box. Therefore, the bran box can be downsized, and the overall height of the rice polishing machine can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 2 Bran removal net 3 Whitening chamber 4 Whitening roll 5 Drop gutter 6 Drive motor 7 Rotating shaft 8 Air duct 9 Motor case 11 Fan 13 Discharge port

Claims (1)

[Scope of utility model registration request] 1. A whitening roll is inserted into a whitening chamber equipped with a bran removal net, a drive motor is provided on the drop gutter side of the whitening chamber, and the rear end of the whitening roll is provided at the tip of the rotary shaft of the drive motor. Part is directly connected, the outer periphery of the drive motor is covered with a motor case through an air passage, and a fan communicating with the air passage is provided at the rear end of the rotary shaft, and the air passage and the drop gutter are discharged. In the rice milling machine connected through the :
It regulates the flow and is discharged from the discharge port into the drop gutter.
The airflow guide plate that controls the flow direction of the outside air downward
A rice milling machine characterized by being installed at the exit .