JPS58128152A - Refining method and rotor of shaft type rice refining machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention is a general food! Chapter 1, of course, concerns the polishing chamber and polishing plate of a vertical rice mill that exhibits high efficiency even in rice milling for sake brewing, which has severe rice milling conditions.

Sake brewing rice milling, unlike -Kinshoku rice milling, requires a high degree of polishing. In other words, the milling rate is around 90% for general food rice.
About lo% becomes bran, but in sake milled rice, it may be less than 50 measles at the lowest milling rate, which is 77-1. It is necessary to mill the rice sufficiently to make high-grade sake such as special grade sake, and completely remove components that have a negative impact on sake brewing, such as proteins, fats, ash, and vitamins that exist in the outer layer of brown rice. rate will be higher.

Therefore, rice milling machines for sake brewing must have high rice milling capacity, and many of the recent rice milling machines for sake brewing use large grinding wheels and are equipped with elevators that allow them to continuously grind and mill the rice while circulating it. It became so.

In order to efficiently mill rice with a large grinding wheel, it is necessary to perform powerful grinding using a large amount of power. However, this increases the amount of broken rice and decreases the amount of effectively polished rice, and also reduces the amount of polished rice. The higher the rate, the more the rice becomes stagnant within the milled rice and does not flow. This stagnation is called the kisimi phenomenon by luxury goods makers, and although the cause is unknown, as the grains of rice gradually become smaller, the quality of the rice hardens. It is conceivable that rice milling*m, in which rice grains touch each other and revolve while rotating, will no longer work due to factors such as evaporation of water in the rice due to heat.

This phenomenon of intermediate staining is hardly a problem in general food rice, but it becomes more severe as the milling rate increases, so it is the most troublesome interlayer in sake milling, and it significantly reduces efficiency and is a problem for sake brewers. It was considered a source of trouble.

As a countermeasure against the squeak phenomenon, conventional methods have been to add additional rice bran to the rice milling machine to promote the flow of rice grains, and to increase the number of discharge ports to 20. Temporary measures have been taken to encourage IP production and reduce the pressure inside the milling room, but no full-scale solution has yet been achieved.

The present invention solves this problem, which is the most difficult problem, through the configuration of a rice milling machine, and enables highly efficient milling of rice for general food as well as rice for sake brewing under difficult conditions. The explanation will be based on.

A polishing plate (1) made from a grinding wheel for a vertical rice milling machine has a large diameter at the top and a small diameter toward the bottom, and has multiple annular grooves (2) between the top and bottom, which are wider than the groove bottom. The outer periphery of the polished plate (1) other than the annular groove (2) is surrounded by a shell e) having an inner wall surface extending at approximately the same interval, and an annular groove is formed with a depression as a whole. The groove is wide and the outer periphery is narrow, forming a whitening chamber (4). On the inner surface of the shell, there are resistance pieces (4) in several places around the circumference to effectively grind the same machine as before 6) is pasted.

Although not shown in the figure, this vertical rice milling machine has a tank at the top and discharges a mixture of rice and bran from the # outlet (6) provided on one side of the lower part of the milling chamber (6). After passing through a vibrating net-type rice bran remover called a ``Packet Compare'' lifting device, the rice is returned to the upper tank for continuous *m milling.

The polished trochanter (1) of the present invention, which is made of a grinding wheel and generally called a Kongo-ru, has three stages: an upper stage, a middle stage, and a lower stage separated by an annular groove a) as illustrated in FIG. Exercising the law,
In some cases, the upper stage has a larger diameter and gradually becomes smaller in diameter in the middle and lower stages, and as shown in FIG. 2, the outer diameter becomes smaller in the upper, middle, and lower stages.

Each stage has a tapered shape with the upper side having a larger diameter and the lower side having a smaller diameter, and some have an inverted truncated cone shape as a whole.

In the illustrative drawings of Figures 1 and 21i, two annular grooves 6) are shown in three stages, but the number of annular grooves may be increased to five stages of 4M1°. Further, although the white board (1) is shown as a single piece in the drawing, there are cases in which the manufacturing committee divides the pieces into 2 to 8 stages and overlaps them.

The above-mentioned two types of white platelets are generally similar, and their functions and effects are not significantly different.

In the whitening board (1) configured as described above, the circumferential speed is high in the upper part and small in the lower part, so the grinding force is large in the upper part, and the grinding force decreases as it goes downward. 4) The pressure inside is lower at the top and higher at the bottom due to the weight of the lifted rice and the grinding force.

Therefore, high-speed grinding is performed in areas with low pressure, and low-speed grinding is performed in areas with high pressure, and as forced grinding is not performed in the lower part where high pressure is applied to the bones, the force exerted on the rice grains is small and the pressure is reduced. Because it has the effect of mitigating the rise, it reduces the mid-stain phenomenon, and furthermore, the annular groove (in the genai, the flow direction changes and the rice grain turns in various directions, which helps to evenly grind the outer layer of the rice grain. At the same time, the pressure also changes due to the change in flow, so that the phenomenon of water leakage can be prevented.

Kono point, l118m, 4th @, 11151! ! In the conventional product shown in Figure 3, the white trochanters are both upper and lower **
* Therefore, excessive grinding is performed at the lower part where the pressure is high, and the pressure increases more and more, causing the phenomenon of staining in the middle and reducing rice milling efficiency.

In addition, in the case of Fig. 4, a white plate with an inverted truncated conical shape is used, and the peripheral speed decreases at the bottom where the pressure is high.
Since there is no annular groove, the long length of the entire outer circumference is made into a narrow polishing path, which results in forced grinding, resulting in wrinkles.
The broken rice rate also increases.

Furthermore, the 5th v! In the case of J, it is a shell along the annular groove, and the gaps are formed in the same way throughout, so when the flow direction changes in the annular groove, the resistance is large, so in this part It is easy to get clogged, and it also causes a problem.

As a result of actually comparing the rice milling machine according to the present invention with a conventional rice milling machine with the same horsepower, it was found that although there are some differences depending on the model of the conventional rice mill, the rice polishing machine according to the present invention does not cause the "kiss hawk" phenomenon, so it is 150% or more.
A 180% improvement in efficiency has been achieved.As described above, the present invention eliminates the conventional drawbacks and prevents the whitening phenomenon with the ideal shape of the whitening trochanter and whitening chamber.
It is capable of highly efficient rice polishing.

[Brief explanation of drawings]

FIG. 1 is a plan view showing one embodiment of the present invention, FIG. 2 is a vertical cross-sectional view showing another embodiment, and FIG. Figures 1i4 and 5th WJ are longitudinal sections miA showing typical examples of different conventional products. 1. Semen trochanter 2. Annular groove 8. Shell body 4. Semen chamber 5. Resistor 6. Exhaust shelf life Applicant
Haruhiko MasuiFigure 1Figure 2Figure 3Figure 4Figure 5

Claims (1)

[Scope of Claims] ■ The diameter of the vertically placed whitening trochanter is large at the top and becomes small toward the bottom, and the circumference of the plurality of annular grooves provided between the top and bottom is approximately the same on the outer periphery other than the grooves. Surrounded by a shell having inner walls adjoining at intervals, the whole being lowered,
This is the whitening chamber of a vertical rice mill, with a wide groove and a scooped outer periphery that acts as a whitening chamber. ■ A vertical rice mill made of a grinding wheel, with a large diameter at the top and a smaller diameter toward the bottom, with multiple annular grooves between the top and bottom, with the grooves wider than the groove bottom. Machine's polished plate.