JPH0136057B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to a shell crack grain detection device.

Conventional Technology Conventionally, the detection of cracked rice grains relied on the human eye.

In addition, a supply plate that vibrates with a vibrator is installed below the hopper discharge port, and an alignment plate that vibrates with another vibrator is installed below the discharge of the supply plate, and only this alignment plate has a width slightly wider than the thickness of the tablet. A tablet transfer device in which a groove having a depth close to the diameter is formed has been proposed in Japanese Patent Laid-Open No. 148557/1983.

Furthermore, a reflected light sensor and a light source are provided on one side of the flow path in a plane perpendicular to the grain flow path in the extended portion of the flow gutter, and the grains are sorted based on the change in color of the grains. A sorting mechanism has been proposed in Japanese Unexamined Patent Publication No. 51-27568.

Problems to be Solved by the Invention Incidentally, shell cracking in grains, especially rice, occurs inside the rice grain, and therefore, shell cracking in rice grains can be detected by the sorting mechanism described in JP-A No. 51-27568. However, since the sensor detects the reflected light from the surface of the paddy, not the internal state, it is difficult to detect it reliably. Further, the device described in the same publication does not require the rice grains to flow down in a longitudinal manner due to the difference in purpose, nor is it equipped with a configuration for causing the rice grains to flow down in such a manner.

The present invention uses the vibrating action of a vibrating grain feeding plate to arrange rice grains longitudinally and accurately in its grain feeding grooves, and also accelerates the rice grains into the flowing grain grooves of a tilted grain plate. Detection of transmitted light from rice grains flowing through the transparent window by transporting rice grains into the grain plate and allowing the rice grains to flow steadily down the transparent window surface at appropriate intervals using the moderate inclination of the inclined flow grain plate. By stabilizing and making the action more accurate, and by detecting the light that has passed through the rice grains in the direction across the grain cracking surface, we have improved the detection accuracy and increased the detection ability. It is an object of the present invention to provide a shell-crack grain detection device capable of detecting grains.

Means for Solving the Problems The shell cracked grain detection device of the present invention has a vibrating grain feeding plate provided with grain feeding grooves that flow rice grains in a longitudinal manner installed in a horizontal structure, and the grain feeding plate is supplied with A grain feeding hopper is disposed on the side, and an inclined flow grain plate whose inclination angle can be adjusted is provided in series on the discharge side of the grain feeding groove, which allows rice grains to flow down in a longitudinal manner. A translucent window for detecting broken grains is provided in the grain groove, and a light source and a light receiving device are arranged above and below the translucent window so as to be substantially opposite to each other to detect the front and back of the rice grains flowing through the translucent window. The structure is characterized in that crack particles are detected based on the difference in brightness of transmitted light.

Embodiments The present invention will be described with reference to embodiment figures. In Figures 1 and 2, reference numeral 1 indicates a box-shaped machine frame;
Inside the machine frame 1, a vibrating grain feeding plate 3 provided with rear grain feeding grooves 2 for flowing rice grains in a longitudinal manner is installed in a horizontal rack shape, and a grain feeding plate is installed on the supply side of the grain feeding plate 3. In addition to disposing a hopper 4, an inclined flow grain plate 6 having grain grooves 5 for flowing rice grains down in a longitudinal manner on the discharge side thereof is provided in series, and the grain grooves 5 of the flow grain plate 6 A transparent window 7 for detecting cracked grains is provided in the window 7, and a light source 8 and a light receiving device 9 are arranged above and below the transparent window 7 in a substantially opposing manner to detect the transmitted light of the rice grains flowing through the transparent window 7. It is designed to detect crack particles (shell crack particles).

The vibrating grain feeding plate 3 is provided with a vibrating device 10 at its lower part, and conveys the rice grains supplied to the grooves 2 of the grain feeding plate 3 to the discharge side by a vibration action, and transfers them to the rows of the inclined flow grain plate 6. Further, the inclined flow grain plate 6 is rotatably supported on one side by a support leg 11, and the other side end is installed directly in a discharge gutter 12 provided in the machine frame 1. In addition, a bent support rod 13 is fixed to the lower side of the grain board 6, and one end of the support rod 13 is rotated by a screw shaft and a screw tube to adjust the inclination angle. A condenser lens 15 and a light source 8 are attached and fixed to the lower part of the transparent window 7 in the center of the support rod 13, and the light receiving device 9 is connected to the optical fiber 1 with two strips.
One side end surface of 6, 17 is provided facing the light-transmitting window 7, and light receiving elements 18, 19 are provided facing the other side end surface.
will be established. Moreover, each light receiving device 18 of the light receiving device 9,
19 is connected to a fuselage ratio indicator 20 on the upper part of the machine frame 1 by a conductive wire. 21 is a rice receiving gutter provided on the vibrating grain feeding plate 3.

Further, in the second aspect of the present invention, the inclined flow grain plate 6 is provided with an inclination angle adjustment device 14 for adjusting the inclination angle of the plate surface, so that the flow of grains in the flow grain groove 5 is improved. When grains often change depending on the grain surface roughness, variety, and moisture content and stay in the grooves, the angle of inclination of the grain surface can be easily increased by operating the adjustment device. The detection effect can be smoothed by adjusting the grain to slide, which has the effect of increasing the work efficiency.

Further, in the third aspect of the present invention, a micro-vibration coupling device 22 is provided on the inclined flow grain plate 6, so that the grains in the flow grain groove 5 intermittently flow down or flow slowly. In such a case, the rotary connecting rod 23 of the connecting device 22 is folded up and fixed and brought into contact with the lower surface of the grain flow plate 6, and the vibration force of the vibrating grain feeding plate 3 is transmitted through the connecting rod 23 to the oblique grain flow. The information is transmitted to the plate 6 to moderately increase the flow rate of the grains, promote the sliding of the grains, and increase the speed of detection.

In the above configuration, when the sample unhulled rice is put into the grain feeding hopper 4 and the device is started, the unhulled rice flowing down from the grain feeding hopper 4 to the rice receiving gutter section 21 of the rear vibrating grain feeding plate 3 is As a result of this action, the long axes of the rice grains are aligned with the grain feeding grooves 2, and the rice grains move forward in a longitudinal direction and in an accurate arrangement, and the rice grains are placed in the grain feeding grooves 5 of the front inclined flow grain plate 6. The rice is carried in at an accelerated speed, and due to the moderate inclination of the grooves 5, the unhulled rice smoothly and stably flows down without jumping, passing through each of the slit-shaped transparent windows 7. The unhulled rice located at
At this time, even if the optical axis of one light-receiving element 18 becomes parallel to the shell crack surface, the other light-receiving element 18
The optical axis of 9 crosses the shell-split surface, and the shell-split grains are detected based on its brightness, and the total number of grains passing through the transparent window 7 is detected to calculate the shell-split ratio;
The ratio is displayed on the body division ratio display 20.

Effects of the Invention According to the split grain detection device of the present invention, the vibration action of the vibrating grain feeding plate allows the rice grains to be arranged longitudinally and accurately in the grain feeding groove, and the rice grains are accelerated and tilted. The rice grains are carried into the flow grain grooves of the flow grain plate, and the longitudinal rice grains are made to flow stably down the transparent window surface at appropriate intervals due to the appropriate inclination of the inclined flow grain plate. The detection effect of the light transmitted through the rice grain flowing through the grain becomes stable and accurate, and by detecting the light transmitted through the rice grain in the direction across the cracked surface, the detection accuracy is improved and the detection ability is improved. It is possible to increase the amount of cracked grains in the shell and to detect cracked grains with high precision.

[Brief explanation of drawings]

The drawings are illustrations of embodiments of the present invention. FIG. 1 is a side sectional view of the apparatus, and FIG. 2 is a plan view of its vibrating grain feeding plate and inclined flow grain plate. 1... Box-shaped machine frame, 2... Grain feeding groove, 3... Vibrating grain feeding plate, 4... Grain feeding hopper, 5... Flowing grain groove, 6... Inclined grain plate, 7...Transparent window for detecting cracked grains in the shell, 8...Light source, 9...Light receiving device, 10...
Vibration device, 11... Support leg, 12... Discharge gutter, 13
...Support rod, 14...Inclination angle adjustment device, 15...
Condensing lens, 16, 17... Optical fiber, 18, 19... Light receiving element, 20... Body division ratio indicator, 21... Rice receiving gutter section, 22... Micro-vibration coupling device, 23... Rotating connecting rod.

Claims (1)

[Scope of Claims] 1. A vibrating grain feeding plate provided with grain feeding grooves that flow rice grains in a longitudinal manner is installed in a horizontal rack shape, and a grain feeding hopper is arranged on the supply side of the grain feeding plate. At the same time, a tilted flow grain plate whose inclination angle can be freely adjusted is installed in series on the discharge side of the rice grain groove, which is provided with grain grooves that allow the rice grains to flow down in a longitudinal manner. In addition to providing a transparent window for rice grains, a light source and a light receiving device are arranged above and below the transparent window in a substantially opposing manner, and the difference in brightness between the transmitted light rays before and after the rice grain flowing through the transparent window is used. A shell crack particle detection device characterized by detecting crack particles. 2. The cracked shell grain detection device according to claim 1, wherein the oblique flow grain plate has an inclination angle adjustment device for adjusting the inclination angle of the plate surface. 3. The cracked shell grain detection device according to claim 1 or 2, wherein the oblique flow grain plate has a micro-vibration coupling device.