JPS5884050A - Automatic control apparatus of polishing degree - 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 The present invention relates to an automatic polishing level control device, which automatically controls the load on a rice milling machine based on the value of a polishing level needle, and mills brown rice to a predetermined level of polishing. It is a processing device.

The degree of polishing of rice for rice refers to the thickness of the aleurone layer that remains on the surface of the rice grains after processing the rice grains.

Brown rice grains consist of a starch layer, or endosperm, which forms the core, and a bran layer surrounding the outer periphery of the starch layer, which consists of a bran layer, an outer bran layer, and an inner bran layer, and the outer bran layer consists of the outer pericarp and its inner wall surface. It consists of a seed coat, an inner bran layer, an ectosperm layer and an aleurone layer. The bran layer becomes thinner as the rice matures, and in mature rice it is so thin that it becomes good quality rice. As the fruit matures, the skin becomes thinner and the aleurone layer thickens.

The powder from which the outer bran layer has been removed is called brown sugar, and the powder from which the inner bran layer has been removed is commonly called white rice bran. The outer bran layer is usually 42 to 48 microns, and the inner bran layer is 25 to 40 microns.The polishing degree is determined by the thickness of the aleurone layer of the inner bran layer, and the quality of polished rice is evaluated. The aleurone layer contains proteins and fats and oils that give it flavor, so the aleurone layer becomes an important component of white rice for eating.When the aleurone layer is removed, nine white rice becomes starch white rice, which is not suitable for sake brewing. Even if it is suitable, it cannot be used as food.

Conventionally, the grain surface of polished rice was measured and used as a substitute for the degree of polishing, but this value is determined by the amount of light diffused by the rough surface generated on the grain surface of the white rice, that is, the surface of the aleurone layer. This value is completely unrelated to degree. For example, white rice with a slight amount of white bran adhering to it immediately after milling will show a much lower value of rice bran than white rice that has been thoroughly polished to remove this white bran. Since this value is the opposite of the progressing whitening level, it is clear that the value is unrelated to the whitening level. That is, white discoloration is the amount of diffusely reflected light, and when the surface of the rice grain becomes glossy and dense, the amount of diffusely reflected light decreases due to the tendency of surface reflection. The thickness of the aleurone layer, which indicates true whiteness, is such that even the slightest amount of diffusely reflected light on the circumferential surface of the endosperm through that thin film becomes white along with the amount of diffusely reflected light on the outer circumferential surface of the aleurone layer. The true polishing level is determined by the amount of light that passes through the polished rice grains, the amount of diffusely reflected light on the surface of the polished rice, and the yield:
gI! The votes can be determined by experimenting in relation to each other and using nine statistical curve values.

Next, since the rice milling amount is controlled by the load of the rice milling machine and the rice flow 11, it is possible to connect the milling needle to the load control device of the rice milling machine and automatically control the load so that the rice is milled to a predetermined level of polishing. K makes it possible to maintain and control the polishing level of white rice at a constant level.

The load on the rice milling machine is the resistance to the rotational force of the milling trochanter, so it is the multiplicative product of the frictional force between the milling trochanter and the rice grains and the circumferential speed of the milling trochanter, and therefore the normal stress of friction, i.e. Load is controlled by adjusting either pressure or speed.

The pressure is regulated by the outlet or the degree of pressure on the walls of the refinery chamber.
When an external force is applied, there is a time difference in the trench that responds to the rotational force of the milled trochanter, making instantaneous load adjustment difficult, and this time difference has the disadvantage of being accompanied by a hunting phenomenon. On the other hand, if the rotation speed of the refined trochanter is adjusted, the adjustment will be responsive and sensitive load adjustment will be possible.

When pressure is adjusted, the characteristics of the whitening action are not significantly modulated, but if one load has wave characteristics, there is an inconvenience that the adjustment may be incorrect during hunting. When using IT speed adjustment, instead of carefully modulating the characteristics of the whitening action, it is convenient to be able to quickly and accurately make stable adjustments even if one load has wave characteristics. Equipment costs are lower for pressure regulation.

These two types of adjustments are optionally applied and may be coupled to a fineness needle to combine pressure and speed.

In the present invention, by connecting a polishing needle to a load control device of a rice milling machine, which did not exist in the past, it is possible to expect the effect of being able to mill rice of any constant polishing level at any time.

The present invention will be explained with reference to embodiment figures. The first cabinet is an overall view of the polishing needle (1), and the symbol (2) is an integrating sphere with a mirrored inner surface.On the right side of it is the sample flow path (8), and on the opposite side is the condensing lens. (4) is provided, and the condenser lens (4) is provided at the neck.
) are provided with a light source lamp (6), a heat ray absorption filter (6), and a monochromatic light filter σ), and a light source lamp (6) and a heat wave absorption filter (II).

A monochromatic light filter (7) and a condensing lens (4) form a light m* position. (8) is equipped with a reference white board installed in the sample flow path (to) and is sampled with a nine-marker pillar, and a flow path resistance increase/decrease device (not shown) is installed at the bottom of the sample flow path (8).
) to adjust the sample density in the flow channel appropriately, and the optical axis of the optical a device is tiltable so that grains such as grains, grains, etc. passing through the sample flow channel (8) can be freely tilted. It is formed so that it can provide optimal transmitted light. In one run, a transmitted light receiving element (9mm) serving as a transmitted light measuring device for capturing transmitted light from the sample is provided on the opposite side of the light source device of the sample flow path (8), and an amplifier (10mm) K is connected to the transmitted light receiving element (9mm). Further, at the bottom of the integrating sphere (2), which is in the direction crossing the line connecting the light source device and the transmitted light receiving element (9), there is a reflected light receiving element (9) which serves as a reflected light measuring device that captures the reflected light from the sample. 9B) ti[tte amplifier (IOB) K411m! do. Then, both the amplifiers (10 MU) (IOB) are connected to analog-to-digital converters (hereinafter referred to as A-D converters) (11 MU)' (II
B) is connected to the arithmetic device (12) K consisting of arithmetic elements, and its output side is branched and one side is connected to the precision indicator (18) and the other side is connected to the process control device (14). , the control device (14) includes a fineness setting device (1
5), and its output side is connected to the drive device (16
) is connected to the adjusting motor (17), and (18) is a nine-person optical shutter installed on the integrating sphere.

In the above configuration, the calculated value of the arithmetic element provided in the arithmetic unit (12), which is calculated from the amount of reflection from the amplifier (10 μm) and the amount of transmission from the amplifier (IOB), that is, the precision is as follows. It is expressed by the formula.

Clarity=reflection quantum X×transmission amount, where X is a coefficient (experimentally determined and a rounded value is used) for converting the transmittance to 1 degree.

Therefore, when sample grains flow into the sample flow path (8) and are adjusted to an appropriate density, a signal from the flow path resistance increase/decrease device causes the reflected light receiving element (9B) and the transmitted light receiving element ( 9A)
The reflectance and transmittance of the polished rice are each measured, and the signals are sent to the arithmetic unit (10 MU) (IOB) and the digital converter (11 MU) (IIB). Igl K is input, and in the arithmetic unit (12), it is calculated according to the above-mentioned nine precision calculation formulas. (14) is input to the fineness setting device (16) to set K and is compared with an arbitrary standard fineness, and the comparison signal is used to drive the adjusting motor (17) in the normal direction via the drive device (16). Maku turns into a reversal, and Mourning turns into Jin, which rotates like a variable speed.

Next, the rice milling machines shown in FIGS. 1 and 2 will be explained.

Refining m with a grinding type refining trochanter (19) mounted inside a porous wall refining cylinder (20) (21) K supply port (22) and discharge port (
(28)K
The rice polishing machine (29) is a grinding type rice polishing machine (29) connected together, and on one side of the upper part of the machine frame of the rice polishing machine (29), there is a discharge port (2B) of the milling chamber (21). ) compression degree is al
A load adjusting device (81) is provided, and a V provided in the downflow gutter (82) connected to the outlet (28) is provided.
Install the polishing needle (1) at the bottom of the material outlet (8B).

The load adjustment device (81) connects a horizontal screw shaft (84) to an adjustment motor (17A) that rotates in forward and reverse directions and a rotation mechanism (85).
), and the screw shaft (84) has a weight (86).
are screwed together and moved back and forth, and the screw shaft (84) itself moves up and down to move the compression lid (80) diagonally up and down via the connecting rod (γ) and the screw rod (88). The specimen box (89) is a sample receiving box.

Therefore, a part of the polished rice sample flowing down the downflow gutter (82) of the grinding rice polishing machine (29) is diverted from the sample discharge port (88) and installed at the bottom of the milling whiteness meter (1), - Supply port (4)
It flows down and is supplied. Then, the sample is placed in the sample flow path (8
), the grain density is adjusted as described above, and the reflectance and transmittance of the milled rice are adjusted by Iw, and the milling degree is calculated using the milling degree calculation formula, and the calculated value is compared with the standard milling degree. The adjustment electric motor (1
? Since the electric motor (17mm) rotates forward and backward, the weight (8s) of the load adjustment device (81) moves back and forth, and the connecting rod (87), Ii'7-rod (88)
), the pressure lid (8o) moves back and forth, and the degree of pressure is automatically adjusted to ensure that the rice is milled at any standard level of polishing.
It has the effect of not only being able to remove K, but also being able to always maintain a constant level of whitening by eliminating the modulation of the whitening action.

Next, the rice milling machines shown in FIGS. 4 and 6 will be explained.

A polishing mold in which a friction type polishing trochanter (40) is mounted inside a multi-hole polishing tube (41) and a discharge port (44) are provided. Sample outlet (46)
At the same time, a round flow down machine (4s) is installed, and a polishing needle (1) is installed at the bottom of the sample discharge port (45), and a part of the sample of the milled rice flowing down the flow gutter (46) is polished. The rice milling machine (47) or (48) is designed to flow down to the supply port (4) of the degree needle (1).
47) has a pulley attached to its rotating main shaft (49), and a load adjustment device (8) that adjusts the rotation speed of the milling trochanter.
Adjustment electric motor (17B) that rotates at variable speeds (1 mm), K pulley (51) is attached to the shaft, and both pulleys (50) (6!) are connected to the belt (
62) It is connected by K. The rice milling machine shown in Figure 5 (
48) has a pulley (64) attached to its rotating main shaft (thigh) and a split pulley (56) for speed change attached to the main electric motor (56) provided at the bottom, and a pulley 1. A control motor (17 (
and both pulleys (54) and (56) are attached to the belt (57).
).

Therefore, a part of the polished rice sample flowing down the downflow gutter (46) of the friction type rice mill (47) (48) is diverted from the sample discharge port (46) and placed at the lower part of the rice mill (48) through the flow gutter (46). 1) and is supplied to the supply port (4). While the sample flows down the sample channel (8), the grain density is adjusted and the reflectance and transmittance of the polished rice are measured as described above.
The whiteness level is calculated using the whiteness level calculation formula, and the calculated value is compared with the standard whiteness level, and the adjustment electric motor (17B) t AH (170) l is set in forward or reverse direction according to the number of seats (excess or deficiency). Since the motor (17B) is rotated, the motor (17B) is (
The rotation speed of the milling trochanter is increased/decreased by the rotation of 170), and the load in the milling chamber (42) is automatically adjusted, making it possible to reliably mill rice to any standard milling level.
The load adjustment is performed stably on the enemy aircraft, and the polishing level can always be maintained at a constant level, and the mass production of highly polished 0JIL quality milled rice can be achieved reliably and quickly. It is.

[Brief explanation of drawings]

The drawings are illustrations of embodiments of the present invention. Fig. 1 is an explanatory diagram of the polishing needle, Fig. 2 is a nine-part partially cutaway view of a large grinding rice mill equipped with a polishing needle, and No. 81m is a perspective view of its load adjustment device.
4 and 6 are both partially cut away large side views of a nine-friction rice polishing machine equipped with polishing needles. 1... Polishing needle 2... Integrating sphere 8... Sample channel 4... Condensing lens b... Light source lamp 6... Heat ray absorption filter 7... Monochromatic light filter 8... - Signpost 9m...Transmitted light receiving element 9B-...Reflected light receiving element 10A, l0B-...
・Amplifier 11, IIB-...Analog-digital converter 12...Arithmetic unit 18...Fineness indicator port...Process control device 15...Fineness setting device 16...Drive device 17 .17A,
17B, 17C... Adjustment electric motor 18... Entering shutter 19... Grinding type whitening trochanter 20... Porous wall whitening tube 21... Whitening chamber 22... Supply port
28...Discharge port 24...Rotating main shaft
25...Tune wheel 26...Electric motor 27
... Adjusting wheel 28 ... Belt 29 ... Grinding rice polisher 80 ... Pressure lid 81.81^811
3...Load adjustment device 82...Downflow gutter 8
8...Sample discharge port 84...Horizontal spiral shaft 86.
...Rotating mechanism 86...Heavy joist 87...Connecting rod 88...Thropper rod Brocade...Sample receiving box 40...Friction type whitening trochanter 41...Porous wall whitening tube 42. ... Refining room, 48... Supply port 44.
...Discharge port 45...Sample discharge port 46...
・Drop down machine 47.48...Friction type rice milling machine 4
9... Rotating main shaft 50.61... Tone wheel 5
2... Bell) 68... Rotating main shaft 54
...Tune wheel 56...Main motor 56...
- Chive splitting wheel 67...Belt A...Fineness needle supply port Patent issuer Figure 2 Figure 3 C No. 510

Claims (1)

[Claims] A polishing device characterized in that a polishing degree needle that measures the polishing degree by applying reflected light and transmitted light from the rice grains is connected to a device for adjusting the rice grain pressure in the polishing chamber of the rice milling machine or the rotation speed of the polishing trochanter in the polishing chamber. degree automatic control device.