JPS5879142A - Measurement of broken rice grain and device therefor - Google Patents

Abstract

PURPOSE:To make it possible to detect broken rice grains exactly and automatically by means of a simple device by leaving rice grains in the water and making them flow with the water and directing light to the flowing rice grains and detecting variation in the amount of light received. CONSTITUTION:An outlet 6 is provided at the deepest part of the bottom of a hopper 1. A light projector 9 and a light-receiving device 10 are arranged respectively above and below a light-passing part 8 of a chute 7, and the output of the light-receiving device 10 is connected to a counting device 11. A certain amount of sample rice grains and water are put into the hopper 1. They are left in it for a few minutes in order to enlarge the difference of the amounts of light passing through regular rice grains and broken rice grains. Then the outlet 6 is opened to make the rice grains flow with the water, and the amount of the passing light is measured when they pass the light passing part 8. If they are broken rice grains, the amount of the passing light becomes smaller in a great deal thatn if they are regular grains. The output of the light-receiving device 10 makes it possible to detect broken rice grains accurately and automatically by means of a simple device.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for measuring split rice present in rice grains such as polished rice. Afterwards, it is necessary to check the content from time to time during the rice polishing process, as it affects the taste.

-1- For checking] It is necessary to measure the number of split grains in non-pulled rice grains (polished rice). Conventionally, the number of split grains in non-pulled rice grains (polished rice) is measured. Conventionally, sample rice grains and water are placed in a carton and left to stand for 20 to 20 minutes.
Meat 11 in 25 minutes! ``The h-method is used to count C shell split grains.

Although this method has the advantage that the body side part absorbs water and is less prone to curling and turning, it is time-consuming and impractical. The present invention aims to automate this method.

The method for determining ff1l of the present invention is to release rice grains into water.
After L, the rice grains are allowed to flow down in a row along with water, and the amount of light that passes through the rice grains is received during the flow, and changes in the amount of received light are detected.

In this method, light transmission is adopted because the detection of the split grains is carried out optically, and the amount of transmitted light of the split grains is lower than that of normal grains, and this can be used as a detection element. This is because it is compatible with measurement automation.

By leaving sample rice grains in water for several minutes, the difference in the amount of transmitted light between them and normal grains such as split grains can be expanded.

When the rice grains are allowed to flow down with water, the rice grains can be passed through automatically and individually at a rate of 1111 L with respect to the transmission of light.

Therefore, according to this method, (1) the rice grains flow down with the water, and (2) the rice grains are optically detected in the middle of the flow, making it possible to automatically perform measurements.

■At that time, since the rice grains were in water, the difference in the amount of transmitted light between split grains and normal grains was magnified, so optical discrimination was reliable. ■Since the rice grains flow down with the water, the water acts as a carrier for the rice grains, requiring a special IIN transport means.
In addition, the movement is smooth and the rice grains can be easily arranged in the necessary rows for detection, and the detection of split grains can be achieved accurately. By using two receivers, one for detecting normal grains and one for detecting split grains, it is possible to detect both the number of IH split grains and the number of normal grains.There is no need to know the number of sample grains in advance. . Detection of normal grains is
This is due to the difference in the speed of transmitted light between water and normal grains.

“Next” - Measuring device of the present invention for implementing the alignment measurement method - 3 - According to the illustrated embodiment,

1 is equipped with an airtight lid 3 with a small brim and a ventilation hole 2, and a watertight opening/closing valve 5 is provided at the deepest part of the bottom of the small brim main body 4. 'Tsuru.

Reference numeral 7 is a thick coat, which is arranged in a loose diagonal direction and has a channel in the center.A light transmitting part 8 made of transparent glass or the like is formed in the middle of the thin coat 7 at least over the flow channel.

Reference numeral 9 denotes a light emitter, and 10 denotes a light receiver consisting of optical sensors such as pho-1 to I-transistors, which are placed on both sides of the light transmitting section 8 of the coat 7.

11 is a counting device connected to the light receiver 10 (1,
Counting device i! 11, the number of times of A is accumulated using a constant decrease in the amount of light received by the light receiver 10 as a signal, and the number of times of A is accumulated.

Therefore, the shoes 1 to 7 are connected to the discharge section 116 of the small collar 1, and the flow paths of the shoes 1 to 7 and the discharge port 6 of the hopper 1 are connected via the on-off valve 5.

d3. It goes without saying that each of the above-mentioned parts is fixedly distributed in a case containing a rag by appropriate means.

To use this measuring device, first, with the discharge port 6 closed with the on-off valve 5, a certain amount of rimple rice grains and sufficient water are put into the hopper 1, the airtight lid 3 is placed on the hopper, and the hopper is left for several minutes. Then, when the on-off valve 5 is opened and the drain is opened, both the water and the rimple rice grains flow out. The outflow rate depends on the size of the vent hole 2 of the sealing lid 3, that is, the vent hole 2
The force of water flowing out from the outlet 6 carries rice grains one by one Pi! The water and rice grains exiting the 1° discharge port 6, which is controlled at the same time, flow in a single line through the channel of the chute 7 and pass through the light transmitting section 8. At this time, when the split grains pass through, the amount of transmitted light decreases due to the presence of the split parts, so the light receiver emits one signal and is detected as split rice.

According to this measuring device, the measurement is reliable because it can detect even one small grain of rice that has been left in water for several minutes. Owing to the presence of the air hole 2 and the single channel, the rice grains are separated individually and pass through the light transmitting section, so that the sample rice grains can be inspected individually. ■By allowing the water and rice grains to flow down naturally through the seams 5-1 and by employing optical detection means, measurement can be performed automatically by opening the on-off valve 5.

■It has the first-class effect of being simple in structure and easy to use.

Regarding the actual FM aspect of this device, it is advantageous to make the diameter of the discharge port 6 of the hopper 1 sufficiently larger than the minor axis of the rice grains, but smaller than twice that. In this way, it becomes easy to take out one by one from the sample rice grains accumulated at the deepest part of the bottom of the hopper 1 through the discharge port 6. 1 In addition, if a pie break 12 is attached to the hopper wall near the discharge port 116, the vibration will make it easier for the rice grains to pass through the discharge port 6, preventing clogging.
゜Additionally, to specifically supplement the illustrated embodiment, 1
Reference numeral 3 denotes a seal ring such as a seal ring, which is provided along the upper edge of the hopper body 4 to ensure complete contact between the body 4 and the sealing lid 3. The main body 4 and the sealing lid 3 are screwed together with screws 14 so that they can be removed. 15 is a case, and 16 is a tilt adjustment device for the chute 7. The light receiver 10゜-〇-The light emitter 9 is housed at both ends of a cylinder 17 that is integrally named with the station names 1 to 7, and a condenser lens 18.
9 is affected by 1 (in the case of the figure, the receiver 10 is IH
There are two pieces, 108 for detecting split powder grains and 101) for detecting normal grains.When using pie break 12, part of the support of hopper 1 may be 20 for bullet + 1 body. . The on-off valve 5 is of a slide type and is operated by a solenoid 21. The on-off valve may be operated manually, or a timer may be attached to the solenoid so that the on-off valve is activated after a few minutes. Even if I set it up and make it work, it doesn't work. 22 is leakage [measured lean pull rice! There is a container that holds water.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention in cross section, and FIG. 2 is an enlarged front sectional view of the main parts of the same. 1... Small collar 12... Ventilation hole;・Sealer,
5... Opening/closing valve, 6... S1 outlet, 7... Chute, 8... Light transmitting section, 9... Emitter, 10... Light receiver, 11... Scale device, 12...Pie break. -7=221-

Claims (2)

[Claims] (1) After rice grains are left in water, the rice grains are allowed to flow down with water in a row, and light is transmitted through the rice grains along the way!
This is a method for measuring split rice, which is characterized by receiving the light with a hand and detecting changes in the amount of received light. (2) A hopper having a discharge port with a watertight on-off valve at the bottom, communicating with the discharge port and forming a light supply part in the middle;
What is claimed is: 1. A split rice measuring device comprising: an inclined chute; a light projector and a light receiver disposed relative to the light supply section; and a counting device connected to the light receiver.