JPS6133242A - Small scale rice refining apparatus - 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 Field of the Invention The present invention relates to a small-sized rice milling apparatus that automatically stops operation at any predetermined milling degree or yield during milling work.

Conventional technology and its problems Conventionally, the yield control of this type of rice milling equipment has been carried out by measuring the milling time in several stages from low whiteness to high whiteness using a milling tester equipped with predetermined conditions, and The scale plate of the rice milling adjustment dial, which is a timer installed in the device, displays the classification of low milled rice, normal milled rice, high milled rice, etc., and the milling action continues according to the standard milling time corresponding to the classification. However, raw brown rice varies in its moisture content, the thickness of the bran layer, and the shape of each grain due to differences in variety, production area, and growing conditions. The rice milling condition (yield or whiteness) of the milled rice is not necessarily constant, which poses a problem in quality control of the milled rice.

Purpose of the Invention In view of the above points, the present invention aims to reliably mill raw brown rice having different conditions as described above into polished rice with a desired polishing state (whiteness or yield), and to ensure high quality rice. The polishing work is done automatically.

The purpose is to provide a high-performance compact rice milling device that can be controlled easily.

Constituent Structure of the Invention A rice grain device that integrally forms a rice grain tank by installing a rice grain tank on the upper part of a base equipped with a rotation device, and polishes the rice grains in the tank while rotating a spiral rotor provided in the rice grain tank. A rice milling state detection device is provided on the rice grain tank or the base of the tank, and a control device is provided that automatically stops the rotating device when the detection signal of the detection device reaches an arbitrarily determined set value. It has a configuration characterized by the following.

DESCRIPTION OF EMBODIMENTS The structure of the present invention will be explained with reference to FIGS. 1 and 2. A porous wall plate 2 for removing bran is provided at the bottom of a mortar-shaped rice grain tank 1, and a spiral rotor 4 is mounted on a vertical shaft 3 erected at the center of the porous wall plate 2.
At the same time, the vertical shaft 3 is connected to a rotating device 6 provided on the base 5 for rotation, and a bran scraping impeller 7 is mounted on the vertical shaft 3 at the bottom of the porous wall plate 2. A whitening trochanter 9 is provided at the lower end of the spiral trochanter 4, and a whitening chamber 10 is provided between the whitening trochanter 9 and the porous wall plate 2 for bran removal. 11 is a fixed outer cylinder provided on the outer periphery of the perforated wall plate 2;
12 is a rice draining gutter provided on the fixed outer cylinder, 13 is a rice draining valve that opens and closes the rice draining port provided in the porous wall board 2, 14 is a bearing part that supports the vertical shaft, and 15 is connected to the rice bran removal chamber. 16 is an air outlet provided in the rice grain collecting device 15, 17 is a lid of the rice grain tank 1, 18 is a resistance ring, 19 is a horizontal rod suspended in the container; The adjustment fitting 21 screwed onto the suspended vertical adjustment screw shaft 20 and the ring body 18 are connected by a connecting rod 22, and 23 is a deceleration electric motor that rotates the screw shaft 20 in forward and reverse directions;
Reference numeral 24 denotes a blower pipe made of a flexible material that connects the bran removal chamber 8 and the bran collection container 15.

A rice milling state detection device 25 is provided on the rice grain tank 1 or the base 5 of the tank 1, and the detection device 25 is composed of a whiteness meter 26 and a weight detection device 27, and the whiteness meter 26 is composed of rice grains. The weight detecting device 27 is attached to the wall of the tank 1 to detect the whiteness of the brown rice supplied to the tank 1 and the whiteness of the polished rice being milled. Tank 1 installed at the bottom of 5
The weight of the brown rice supplied to the machine and the weight of the white rice being milled (weighed together with the prosthesis) are detected respectively, and each detection signal of the rice milling state detection device 25 is transmitted to the control device 28 and the digital display 29.
are input respectively. The digital display 29 calculates whiteness or yield based on the measured detection signal and digitally displays each numerical value (%) one after another, and the control device 29 uses a whiteness setting device provided in the device 29. 30 or each arbitrary setting value set in the yield setting device 31, and is configured to turn off the rotating device @6 and stop the operation according to each matching signal,
32 is a grain temperature sensor.

Next, the milling yield is expressed as the ratio (%) of the weight of polished rice before and after milling divided by the brown rice type, and the relationship between yield and whiteness is generally determined by the increase in whiteness from brown rice whiteness to white skin (21). %, the yield is approximately 90%, and the yield is 0.5 per 1% increase in white skin.
% changes, so detecting the whiteness of brown rice and the whiteness of milled rice and managing the whiteness respectively means managing the milling yield.

Further, the setting value set in the yield setting device 31 provided in the control device 28 of the present invention is the desired yield rate (%) as is, and the setting value set in the whiteness setting device 30 is the whiteness setting device 31 provided in the control device 28 of the present invention. Correction table based on skin increase of 21% (created through experiment)
A corrected whiteness (%) appropriately selected from the above is used, and the corrected whiteness is added to the brown rice whiteness (%) detected by the whiteness meter 26 in the control device 28 to obtain the polished rice whiteness.

The operation of the above-mentioned configuration will be explained below.

The rice grains (brown rice) put into the rice grain tank 1 are transferred to the spiral trochanter 4.
is sent to the lower part of the milling trochanter 9, polished while being stirred in the milling chamber 10, and excavated in a circumferential manner. The grains that descend and circulate through the grains 4 are milled, but the grains that flow upstream along the inner circumferential wall of the tank 1 pass through the resistance ring 1.
Since the flow is suppressed by 8, the frictional force increases and an extremely high-efficiency pumping action is performed.

In the rice polishing process, when whiteness is controlled,
When raw brown rice is put into the rice grain tank 1, an arbitrary setting value (for example, corrected white melon 20%) is set in the white skin setting device 30, and the whiteness meter 26 is started, the whiteness meter 26 will read the whiteness inside the rice grain tank 1. The control device 28 that detects the whiteness of brown rice and inputs the detection signal detects the whiteness of brown rice (for example, 19%).
and the corrected white melon (20%) from the setting device 30 are added, and the milled white peel (39%) is stored in the device. Next, when the whitening action begins, the whiteness meter changes to 0 degrees, which is 26 degrees.
are detected one after another and displayed on the digital display 29. Further, when the 0 degrees detected by the whiteness meter 26 reaches the milled white skin (39%) stored in the control device 28, the rotating device 6 is automatically stopped by the coincidence signal, and the whitening action is completed. The rice is milled accurately to a desired degree of polishing (39%) and taken out of the machine.

In addition, when controlling the yield in the rice milling process, the raw brown rice is put into the rice grain tank 1, and the yield setting device 31
When the weight detection device 25 is started by setting an arbitrary setting value (for example, yield 90.5%), the load cell of the weight detection device/device 25 detects the total weight including the weight of brown rice in the rice grain tank 1. The control device 28, which receives the detection signal, subtracts the weight of the machine from the total weight and stores the brown rice weight in the device. Subsequently, when the whitening action is started, the weight detection device 27 detects the total weight including the weight of polished rice that is reduced in weight through polishing and removal of bran, and inputs it one after another to the control device 28. Calculate the weight of white rice and
The calculated yield rate is displayed on the digital display 29 by comparing it with the stored brown rice weight. At that time, the yield rate based on the weight of polished rice detected by the weight detection device 27 is determined by the yield setting device 3.
When the set value (90.5%) set in 1 is reached, the rotating device 6 is automatically stopped based on the matching signal, the polishing action is completed, and the milled rice with the desired yield rate (90.5%) is produced. It is then precisely milled and taken out of the garden.

As described in detail, according to the present invention, raw brown rice having different conditions as described above is polished to a desired rice polishing state (0 degree or yield).
- It is possible to accurately mill the milled rice at all times, the quality of the milled rice can be reliably improved, and furthermore, each milling operation can be automatically controlled in a small rice milling device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view of this device, and FIG. 2 is a front view of its control device. 1... Rice grain tank 2... Porous wall plate for bran removal 3.
... Vertical shaft 4 ... Spiral rotor 5 ... Base
6...Rotating device 7...Blank scraping impeller
8...Blank removal empty 9...Refining trochanter 10...Refining to 11...Fixed outer cylinder 12...Discharge gutter 13...
・Rice discharge valve 14... Bearing part 15... Container for collecting rice bran 16... Air exhaust port 17... Lid body 18
...Resistance ring 19...Horizontal rod 20...
Vertical adjustment screw shaft 21... Adjustment fitting 22... Connecting rod 23... Electric deceleration 17M 24... Blower pipe 25
... Rice polishing state detection device @ 26 ... Whiteness meter 27 ...
Weight detection device 27A...Load cell 28...Control device 29...Digital display 30...White bark setting device 31...Yield setting device 32...Sensor for grain temperature

Claims (3)

[Claims] (1) A rice grain tank is installed on the top of a base equipped with a rotating device, and the rice grains are polished by rotating a spiral rotor installed in the rice grain tank to circulate the rice grains in the tank. In the apparatus, a rice milling state detection device is provided on the rice grain tank or the base of the tank, and a control device is provided that automatically stops the rotating device when the detection signal of the detection device reaches an arbitrarily determined set value. A small rice milling device characterized by: (2) The small-sized rice milling device according to claim (1), wherein the rice milling state detection device is a whiteness meter that detects the whiteness of brown rice and polished rice. (3) The small-sized rice milling device according to claim (1), wherein the rice milling state detection device is a weight detection device that detects the weight of brown rice and polished rice.