JPH0244847Y2 - - Google Patents

Description

[Detailed description of the invention] "Field of industrial application" The present invention relates to an improvement of a circulating rice mill.

``Conventional technology'' As is conventionally known, in a circulating rice milling machine, a grain feeding cylinder containing a milling roll and a hopper filled with rice grains are connected through a downstream grain feeding section and a pressure reflux section, and the milling roll is It is rotated to circulate the rice grains while milling. Therefore, the grain feeding cylinder in this rice milling machine is provided with a bran removal net portion in the middle portion for discharging rice bran. This part is where rice grains are agitated and transferred by the rotation of the milling rolls to remove the bran, and in order to enhance the bran removal effect, it has a cross-sectional structure as shown in FIG. 3.

That is, the upper cylinder part 8 of the grain feeding cylinder 2 facing the bran removal net 9 is formed so that its inner surface has a distance D larger than the distance d between the milling roll 3 and the bran removal net 9,
The rice grains are actively stirred.

``Problem that the invention seeks to solve'' However, with this conventional method, as rice is polished repeatedly, rice bran adheres and accumulates on the inner surface of the upper cylinder part 8 of the grain feeding cylinder 2, making it difficult to improve stirring performance. The space provided for this purpose becomes full, leading to problems such as reduced bran removal performance and increased time required for rice polishing.

The inventor of the present invention has investigated various causes of such problems, and as a result, the rice grains are transferred while being repeatedly rotated and stirred in the grain feeding tube 2 as the milling roll rotates. At that time, grain feeding cylinder 2
The rice grains filling the upper cylinder part 8 are large on the push-up side a, and are small on the push-down side b, so that the rice grains are strongly pressed against the inner surface of the upper cylinder part 8 on the push-up side a. On the push-down side b, the rice grains are transferred in such a manner that they do not come into contact with the inner surface of the upper cylinder part 8, so that the rice bran on the surface of the rice grains adheres to the inner surface of the upper cylinder part 8, and this progresses further. In the end, it was found that this had an effect on the drilling performance.

The present invention was developed based on this knowledge, and improves the shape of the inner surface of the upper cylinder in the bran removal part of the grain feeding cylinder, so that the rice grains are transferred while constantly pressing against the entire inner surface, and the rice grains are transferred to the inner surface of the upper cylinder. It is an object of the present invention to provide a circulation type rice milling machine which can prevent the adhesion and accumulation of rice bran, has good agitation properties, and has a good bran removal effect.

"Means for Solving the Problems" The structure of the present invention for achieving the above object will be explained with reference to FIGS. 1 and 2, which correspond to embodiments. In the rice milling machine, the inner surface shape of the upper cylinder part 8 facing the bran removal net 9 in the rice grain removing part 7 of the grain feeding cylinder 2 is adjusted by the rotation of the milling roll 3, and the rice grains transferred while being agitated. Pumping roll 3 on push-up side a
In addition to widening the distance between
It is characterized in that it is formed with a narrow interval that is almost the same as the interval between the milling roll 3 and the bran removal net 9.

``Example'' Below, an example of the rice polishing machine of the present invention is shown in Figure 1.
This will be explained with reference to FIG.

In the figure, 1 is the cabinet of the rice milling machine, 2 is the grain feeding cylinder, 3 is the milling roll, 4 is the hopper, 5 is the downstream grain feeding cylinder, 6 is the pressure reflux part, and 7 is the groove formed in the middle part of the grain feeding cylinder 2. In the bran portion, approximately the lower half of the grain feeding cylinder 2 is removed, and a approximately semi-cylindrical bran removal net 9 is attached to that portion, and the remaining portion is an approximately semi-cylindrical upper cylinder portion 8. It is becoming. The structural parts of these rice milling machines are basically the same as those of conventional circulation type rice milling machines, and the rice grains stored in the hopper 4 fall from the hopper 4 through the grain feeding section 5 and into the grain feeding tube 2. The refined grain is supplied, is transferred through the grain feeding cylinder 2 by the polishing roll 3 rotated by the motor 10 via the main shaft 11, and flows into the hopper 4 again through the pressure reflux part 6. By repeating this operation, the polishing degree is gradually increased. The bran produced by polishing is discharged through a bran removal screen 9.

The present invention is characterized by the configuration of the bran removal section 7 in the above-mentioned circulation type rice milling machine.

That is, the shape of the inner surface of the upper cylindrical part 8 in the bran removal part 7 is determined by the distance D from the milling roll 3 on the pushing-up side a of the rice grains and the distance from the milling roll 3 on the pushing-down side b of the rice grains in the cross section. It is formed to be wider than d. In this case, the distance d between the upper cylinder part 8 and the milling roll 3 on the pushing-down side b of the rice grains is approximately the same as the distance between the milling roll 3 and the bran removal net,
Further, the inner surface of the upper cylinder part 8 is preferably formed such that the distance from the milling roll 3 gradually decreases from the starting end of the rice grain pushing side a to the terminal end of the rice grain pushing side b.

The present invention is constructed as described above, and the rice grains flowing from the hopper 4 through the grain feeding section 5 and into the grain feeding tube 2 are rotated in the grain feeding tube 2 as the milling rolls 3 rotate. The grains are transferred to the pressure reflux section 6 while being repeatedly stirred, but at this time, the grains filling the upper part of the grain feeding tube 2 are larger on the push-up side a, and only a small amount on the push-down side b. Since the inner surface of the upper cylinder part 8 of the grain feeding cylinder 2 is wider on the push-up side a and narrower on the push-down side, rice grains are constantly transferred to the upper cylinder part 8 of the grain feeding cylinder.
Since the rice bran is transferred while being pressed against the entire inner surface of the upper cylinder part 8, the rice bran is well stirred without adhering to the inner surface of the upper cylinder part 8, and the rice bran is effectively discharged from the rice bran removal screen.

"Effects of the invention" As explained above, the rice milling machine of the present invention is a circulating rice mill, in which the inner surface shape of the upper barrel part facing the bran removal net in the bran removal part of the grain feeding barrel is changed by the rotation of the milling rolls. The distance between the rice grains, which are rotated and agitated by the rice grains, and the milling rolls on the pushing up side is wide, and the space on the pushing down side of the rice grains is made as narrow as the spacing between the milling rolls and the bran removal net. The upper barrel of the grain feeder is shaped to match the movement of the rice grains, so the rice grains are transferred while constantly pressing against the entire inner surface of the upper barrel of the grain feeder. It has many advantages, such as no rice bran adhering to the inner surface of the part, smooth and even stirring, and significantly improved bran removal effect.

[Brief explanation of drawings]

Figure 1 is an overall side sectional view showing one embodiment of the rice milling machine of the present invention, Figure 2 is a sectional view taken along line A-A in Figure 1, and Figure 3 is a sectional view taken along line A-A in Figure 1.
The figure is a sectional view showing the main parts of a conventional machine. 2... Grain feeding barrel, 3... Milling roll, 7... Bran removing section, 8
...Upper cylinder part, 9...Blank removal net.

Claims (1)

[Scope of utility model registration request] In a circulating rice mill, the inner surface of the upper barrel facing the bran removal net in the bran removal section of the grain feeding barrel is rotated by the rotation of the milling roll, and the rice grains are pushed up and milled on the side that is transferred while being stirred. A circulating rice milling machine characterized by widening the distance between the rolls and forming a narrow distance on the side where the rice grains are pushed down, which is almost the same as the distance between the milling roll and the bran removal net.