JPS6242761Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a suction bran removal device for a rice milling machine that uses the power of a rotating fan to remove rice bran, broken rice, hulls, etc. generated during the milling operation of rice grains.

In general, as a means of removing rice bran during rice milling, a method is often used in which wind is passed through the rice grains in the milling chamber, and the rice bran and husk are forcibly taken out of the rice milling chamber. Since the heat generated in rice milling can also be cooled down by the above-mentioned ventilation effect, at present, ventilation-type bran removal devices are the mainstream in rice mills. In this case, there are two ways to take in air: one is to make the milling rolls and main shaft hollow and the air is taken in from the center, and the other is to take air from the outside of the bran removal cylinder regardless of the rolls or shafts. It is suitable for large machines that have space to make hollow rolls, etc., and the latter is advantageous for rice milling machines with relatively small power in terms of the size of rolls etc. and manufacturing cost.

The suction bran removal device for a rice milling machine according to the present invention belongs to the latter category, and a pair of partition bars are installed in parallel on the left and right sides of the frame supporting the bran removal cylinder, so that the external space of the rice bran removal cylinder can be used up and down. At the same time, two ventilation gaps are formed on each side on the left and right between the partition bar, the bran removal cylinder, and the suction case, thereby adjusting the ventilation conditions of the interior of the bran removal cylinder and the space outside thereof to improve the removal of rice grains. It is designed to be in the optimal condition for removing bran, broken rice, and paddy husk, and to perform extremely efficient suction and bran removal operation with low power.

Hereinafter, this invention will be explained in detail with reference to the drawings of the embodiments. In the drawings, reference numeral 1 is the cabinet of the rice milling machine M, 2 is the hopper, 3 is the shutter, 4 is the main shaft, 5 is the milling roll, 6 is the resistor, and 7 is the discharge gutter,
8 is a suction cylinder, 9 is a suction fan, 10 is a cyclone, 11 is an input pulley, 12 and 13 are fan drive pulleys, and 14 is a V-belt, and the structure and operation of each of these parts is the same as the conventional one. Since it is completely the same as the one-time milling rice mill, the explanation will be omitted.Next, the structure of the most important part of the device of the present invention will be explained using an enlarged sectional view (FIG. 2) of the main part.

That is, reference numeral 15 in the drawings indicates a pair of left and right mesh bodies 15.
It is a bran removing cylinder 15 formed into a hexagonal shape by a and 15a, and this bran removing cylinder 15 is inserted into the inside of a frame 16 which is divided into two bodies 16a and 16a, and the bolt 1 is inserted into the frame 16.
7 and 17, and is supported and fixed at a fixed position in the machine so that the center of the frame 16 coincides with the axis of the polishing roll 5, and a polishing chamber 18 is formed between it and the polishing roll 5 inside. has been done. Reference numeral 19 denotes an air intake case that surrounds the external space S of the frame body 16. An air intake port 20 for taking in air from the outside is provided at the upper part of this air intake case 19, and a suction fan 9 is provided at the lower part of the air intake case 19. A suction cylinder 8 is connected to communicate with the suction cylinder 8. Reference numerals 21 and 21 are partition bars that play the most important role in the suction bran removal device of the present invention, and a pair of left and right partition bars are installed parallel to the bran removal cylinder 15 between the front and rear flanges 16b, 16b of the frame 16. The external space S of the bran removing tube 15 is divided vertically by this partition bar 21, and the left and right partition bars 21, 21 and the bran removing tube 15
Gaps C ₁ , C ₁ are provided between the partition bars 21 , 21 and the air intake case 19 , and gaps C ₂ , C ₂ are provided between the partition bars 21 , 21 and the air intake case 19 . In this case, the size of the gaps C ₁ and C ₂ is such that the inner gap C ₁ (on the bran removing cylinder side) is equal to or smaller than the outer gap C ₂ (on the air suction case side) depending on the bran removal conditions. It is made larger than that. Further, in the case of this embodiment, the outer gap _C2 is formed between the guide plate 19a protruding from the air intake case 19, but without providing this guide plate 19a, the outer gap C2 is formed between the inner wall surface of the air intake case 19 and A gap C ₂ may also be formed directly between them.

Since the suction bran removal device according to the present invention has the above-described structure, during rice polishing, rice bran, hulls, broken rice, etc. are discharged to the outside through the mesh on the circumferential surface of the bran removal cylinder 15.
At the same time, rice bran and the like are drawn out by the wind passing through the whitening chamber 18. At that time, the partition bar 21
The rice bran pushed out from the mesh located above (on the suction port side of the suction case) is mainly sucked through the gap _C1 along the outer surface of the bran removal tube 15, but the broken rice and hulls are The air is ejected as if being ejected from the mesh of the tube 15, collides with the inner wall of the air suction case 19, falls, and is sucked downward through the outer gap _C2 .

As mentioned above, in the suction bran removal device of this invention,
A pair of partition bars are installed parallel to each other on the left and right sides of the frame supporting the bran removal tube, and the external space of the bran removal tube is divided vertically, and there are two partitions between the partition bars, the bran removal tube, and the suction case, inside and outside. Of the two gaps C _{1 and} C ₂ , the inner gap (on the bran removing cylinder side) C ₁ is formed _.
The gap C 1 not only plays the role of blowing the air introduced from the intake port along the surface of the rice bran removing cylinder, sucking up the rice bran pushed out from the mesh of the rice bran removing cylinder and discharging it outside the machine _. The size of the gap is equal to or larger than the outer gap _C2 , and since it is located closer to the center than the outer gap _C2 , the amount of suction is large, and the amount of air passing through the milling room is reduced. It plays the role of regulating it to an appropriate state at all times. Also, the gap _C2 on the outside (on the suction case side) mainly serves as a passage for suctioning crushed rice, paddy hulls, etc. that have been pushed outward, so unlike the case where suction is concentrated from one place, there is no possibility of clogging with rice bran, etc. Failures due to dirt or adhesion will not occur.

Therefore, according to the present invention, the ventilation conditions inside and outside the bran removing cylinder can always be maintained in the optimal state for removing the bran from rice grains, and extremely smooth suction and bran removing operation can be performed efficiently with a small amount of power. It is something.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an example of a concrete implementation structure of a rice milling machine equipped with a suction bran removal device according to the present invention;
FIG. 2 is an enlarged sectional view taken along the line A--A in FIG. 1, showing the structure of the main parts of the device. M... Rice mill, 1... Cabinet, 2... Hopper, 3... Shutter, 4... Main shaft, 5...
Sekisei roll, 6...Resistor, 7...Discharge gutter, 8...
... Suction cylinder, 9 ... Suction fan, 10 ... Cyclone, 11 ... Input pulley, 12, 13 ... Fan drive pulley, 14 ... V-belt, 15 ... Bran removal cylinder, 15a ... Net body, 16 , 16a...frame body,
16b...flange, 17...bolt, 18...
Whitening room, 19...Air intake case, 19a...Guide plate, 20...Air intake port, 21...Partition bar, C ₁ , C ₂
……gap.

Claims (1)

[Scope of utility model registration request] The outer frame 16 supports the bran removing cylinder 15 at a fixed position inside the machine, and forms a milling chamber 18 between it and the inner milling roll 5, and also connects the external space S of the frame 16 to a suction case 19. Surround it with this air intake case 1
In a rice milling machine having an air intake port 20 at the upper part of the frame 1 and a suction pipe 8 communicating with the suction fan 9 at the lower part, the frame 1
Partition bars 21 are installed in parallel with the bran removing cylinder 15 on the left and right sides of 6, and the partition bar 21, the bran removing cylinder 15, and the partition bar 2 are connected to each other.
1 and the air suction case 19, and among the gaps _C1 and _C2 , the size of the gap C1 between the partition _{bar 21} and the bran removal tube 15 is determined by the size of the gap _C1 between the partition bar 21 and the bran removal tube 15. A suction bran removal device for a rice milling machine, characterized in that the gap is equal to or larger than the gap _C2 between the air suction case 19 and the air suction case 19.