JPH06167454A - Device for grading rice grain - Google Patents

Abstract

PURPOSE:To effect correct grading of rice grains by a method wherein a vibrating grain-transfer parts are constituted of a first and a second parts, the speed of the second grain-transfer part is made faster than that of the first part thereby to arrange grains one by one with intervals. CONSTITUTION:Rice grains are discharged to a first vibrating grain-transfer part 13 by the rotation of a supply valve 5, in a state continuously lined up, and are transferred into a second vibrating grain-transfer part 14. For rice grains on the grain- transfer part 14, suitable spaces are arranged, and the grains are lined up, because the grain-transfer speed of the grain-transfer part 14 is greater than that of the grain- transfer part 13. With the start of the vibrating grain-transfer part 12, a transfer body 24 proceeds from an initial position A to a measuring position B, rice grains are fed from the grain-transfer part 14. These rice grains are analyzed by a device 30 for measuring the quantity of light applied to the position B, and the measured value is analyzed in an arithmetic and control part 42. Hereupon, the grading of the rice grains can correctly be carried out in every grain, because spaces among rice grains are arranged one by one, and the grains are measured. As the result of the analysis, the rice grains of low grade are sucked in by a suction pipe 44 to be sent to a rice grain receiving box 46.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice grain quality discriminating apparatus for discriminating the quality of brown rice, white rice or paddy rice, and more particularly to a device for discriminating the quality of each rice grain.

[0002]

2. Description of the Related Art Grains such as rice grains are inspected according to the agricultural product standard rule based on the agricultural product inspection method and the grade is determined in comparison with standard products, but this inspection is appointed by a person who is familiar with inspection of cereals. The correct grade determination is always made,
Not perfect due to visual inspection.

Therefore, as a grain quality discriminating device for brown rice and the like, the reflected light and the transmitted light are detected by a linear image sensor or the like by irradiation with visible light or infrared light, and the quality of the rice grain is utilized by digitally processing the signal. There has been a demand for a grain quality discriminating device for discriminating.

The present applicant has already proposed this device (Japanese Patent Laid-Open No. 3-140845). In this device, the supplied rice grains and the like are arranged in a row in a plurality of rows continuously in the vibrating and feeding unit, and are dropped and supplied to the rice grain conveying unit with appropriate intervals between the rice grains.

[0005]

However, when rice grains or the like are successively supplied from the vibrating grain feeding section to the rice grain feeding section as described above, after falling from the vibrating grain feeding section, the grains are mixed with each other in the rice grain feeding section. However, there is a problem that they are not recognized as proper quality at the determination stage because they contact or polymerize.

In view of the above problems, it is an object of the present invention to provide a rice grain quality discriminating apparatus capable of accurately discriminating rice grains by arranging them one by one with an appropriate interval.

[0007]

Means for Solving the Problems In order to achieve the above-mentioned object, the rice grain quality discriminating device value of the present invention is a rice grain transporting unit for transporting rice grains by moving a transportable body capable of transmitting a light beam in a horizontal direction at a constant speed. A vibrating grain feeding section for forming grain grooves for vertically flowing rice grains to feed the rice grain to the rice grain feeding section, a rice grain feeding section provided on the feeding side of the vibrating grain feeding section, and the rice grain feeding section From the visible light source consisting of visible light radiated from above the carrier at the front and rear positions of an arbitrary point within the moving range after the rice grain supply, and infrared light radiated from below the carrier to rice grains provided below the carrier. And an infrared light source, and a light amount measuring unit that measures the amount of reflected light and the amount of transmitted light above the carrier in relation to the arbitrary point, and an arithmetic control unit that arithmetically processes the measurement values of the measuring unit and selects rice grains into a plurality of grades. In a sorting device having a Constituted by the OkuKoku portion and the second vibrating OkuKoku unit.

[0008]

[Function] The rice grains and the like supplied from the rice grain supply unit are continuously aligned in a plurality of rows by the first vibrating grain feeding unit and then fed to the second vibrating grain feeding unit. Due to the fact that there is almost no step with the vibrating grain feeding section and the difference in grain feeding speed between the first vibrating grain feeding section and the second vibrating grain feeding section, rice grains and the like on the second vibrating grain feeding section are arranged in a plurality of rows. The rice grains are aligned and the rice grains are appropriately spaced. Since the rice grains and the like are successively sent to the rice grain transporting unit in this state, the rice grains and the like on the rice grain transporting unit are aligned in a plurality of rows with appropriate intervals for each grain.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

The rice grain supply unit 1 is provided at the upper end of the machine frame 2. The rice grain supply unit 2 includes a supply hopper 4 supported by a support frame 3,
A supply valve 5 provided below the supply hopper 4 for discharging rice grains and the like in appropriate amounts, a pulley 7 mounted on a rotary shaft 6 of the supply valve 5, a motor 8, and the motor 8 and the pulley 7 are connected to each other. It is composed of a timing belt 9. Further, a scattering prevention cover 10 is provided so as to make a circumferential contact with the lower part of the supply hopper 4 to the outer periphery of the supply valve 5, and a groove 11 is formed on the circumference of the supply valve 5 in the direction of the rotating shaft 6.

A vibrating grain feeder 12 is provided below the rice grain feeder 1.
To provide. The vibrating grain feeding unit 12 is composed of a first vibrating grain feeding unit 13 and a second vibrating grain feeding unit 14. The first vibrating grain feeding section 13 includes a base portion 16 fixed to the machine casing 2 by a vibration-proof spring 15 and a first grain feeding body 17 provided on the upper portion of the base portion 16, and a second vibrating grain feeding portion. The reference numeral 14 includes a base portion 19 fixed to the machine casing 2 by a vibration spring 18, and a second grain feeding body 20 provided on the upper portion of the base portion 19. First
A plurality of grain-feeding grooves 21 are formed in each of the grain-transporting body 17 and the second grain-transporting body 20, and further, a plurality of step portions 22 that descend according to the transport direction are formed in the first grain-transporting body 17. The second grain transfer body 20 has a slope 2 that descends in the transport direction.
3 is formed. In addition, the grain transfer speed of the second grain transfer body 20 is the first
It is configured so that the grain feeding speed of the grain feeding body 17 can be made higher.

A rice grain transporting section 25 is formed in the vicinity of the lower portion of the second grain feeder 20 by providing a transporter 24 capable of passing a light beam so as to move at a constant speed in the horizontal direction. The carrier 24 is formed to be horizontally reciprocable by a driving device (not shown). A discharge device 27 having a discharge cleaning blade 26 is provided above the transport body 24 at an arbitrary point.

A visible light source 28 made of visible light is provided above and below the arbitrary point of the rice grain transport section 25, and an infrared light source 29 made of infrared light is provided below the arbitrary point. The light amount measuring unit 30 is provided on the upper side to form the light amount measuring device 31. The light quantity measuring unit 30 includes a bran collecting lens 32 that collects transmitted light of infrared rays such as rice grains and reflected light of visible rays such as rice grains, and a lower half mirror 33 that separates visible light and infrared light. , The lower half mirror 33
The upper half mirror 34 that further separates the light that has passed through the red wavelength band and the green wavelength band, the cut filter 35 that cuts unnecessary light, the infrared light amount measurement element 36 including a linear image sensor, and the red light amount measurement It is composed of an element 37 and a green light amount measuring element 38.

Next, the arithmetic and control unit 39 for analyzing the measurement values obtained by the light quantity measuring unit 30 will be described. The infrared light amount measuring element 36, the red light amount measuring element 37, and the green light amount measuring element 38 are connected to the arithmetic and control unit 39 via the A / D conversion 40 and the differentiating circuit 41, respectively. The arithmetic and control unit 39, the A / D converter 40 and the differentiating circuit 41 form an arithmetic and control section 42. Further, the motor 8 of the supply valve 5, the vibrating grain feeder 12, the rice grain transporter 25, and the sorting device 43 are connected to the arithmetic and control unit 39.

Next, the sorting device 43 will be described. The sorting device 43 exposes the suction port 45 of the suction pipe 44 on the carrier 24. The suction pipe 44 has an inner diameter through which rice grains and the like can pass, one end of each suction pipe 44 is connected to an air compressor (not shown), and the other end is a rice grain provided in an appropriate space in the machine frame 2. Face the inside of the inbox 46. These suction tubes 44 are formed so as to be operated by an output signal from the arithmetic control unit 42. As a result, when the arithmetic control unit 42 analyzes the measurement value of the light amount measuring device 30 and determines that a certain rice grain is a low-grade grain, the sorting device 43 is activated by the signal from the arithmetic control unit 42 to suck the grain. It is sucked from 45 and conveyed to the rice grain receiving box 46.

The operation of the above configuration will be described. Rice grains or the like are put into the supply hopper 4, and the calculation control unit 42 activates the supply valve 5 and the vibrating and feeding unit 12.

Rice grains and the like are discharged to the first vibrating and feeding section 13 by the rotation of the supply valve 5 and then flow to the second vibrating and feeding section 14. The rice grains and the like on the first vibrating and feeding unit 13 are sent to the second vibrating and feeding unit 14 in a state where they are continuously aligned in a plurality of rows.
Since the grain feeding speed of the vibrating grain feeding unit 14 is faster than the grain feeding speed of the first vibrating grain feeding unit 13, the rice grains and the like on the second vibrating grain feeding unit 14 are aligned in a plurality of rows and are appropriate between the rice grains. The rice grains are sent to the rice grain transport unit 25 at intervals.

When the vibrating and feeding unit 12 is activated, the carrier 24
Moves toward the measurement position B while moving at a constant speed from the initial position A. Rice grains and the like are supplied from the second vibrating and feeding unit 14 while heading to the measurement position B. The supplied rice grains and the like are analyzed by the light quantity measuring device 30 provided at an arbitrary point of the measurement position B, and the obtained measured values are analyzed by the arithmetic control unit 42.

When the carrier 24 is moved from the measurement position B to the sorting position C, a plurality of sorted low-quality rice grains and the like are sucked by the suction pipes 44 of the sorting device 43 according to the analysis result of the arithmetic control unit 42. It is then sent to the rice grain receiving box 46.

When the transport body reaches the sorting position C, the transport body 24 reversely moves toward the initial position A by the detection of the sensor 47 provided at the limit position. The particle size on the carrier 24 is discharged by the discharging device 27 while moving toward the initial position A.
The particles are scraped off by the sizing receiver 48 provided below, and dirt on the carrier 24 is removed.

When the carrier 24 reaches the initial position A, it is detected by a sensor 49 provided at a limit position.
Is further reversed to the measurement position B. The above operation is repeated.

By the way, the rice grain supply section 1 and the vibrating grain transfer section 12
The reason is that if the carrier 24 is stopped after a predetermined time from when the carrier 24 starts moving from the initial position A toward the measurement position B, rice grains and the like will not stick out of the carrier 24 and fall.

[0023]

EFFECT OF THE INVENTION The vibrating grain feeding section is composed of the first vibrating grain feeding section and the second vibrating grain feeding section, and the grain feeding speed of the second vibrating grain feeding section is set to the grain feeding speed of the first vibrating grain feeding section. By making the speed faster than the above, the rice grains and the like sent from the first vibrating and feeding unit to the second vibrating and feeding unit have appropriate intervals between the grains. Since the rice grains are successively sent to the rice grain conveying section in this state, the rice grains and the like on the conveyer have proper intervals one by one. Therefore 1 grain of rice
It is possible to determine the quality for each grain.

[Brief description of drawings]

FIG. 1 is a block diagram of the present invention

FIG. 2 is a top view of a first grain sending body, a second grain sending body, and a carrier.

FIG. 3 shows the first grain sending body, the second grain sending body, and the carrier seen from the arrow D.

FIG. 4 is a control block diagram of this device.

[Explanation of symbols]

 1 Rice Grain Supply Section 2 Machine Frame 3 Support Frame 4 Supply Hopper 5 Supply Valve 6 Rotating Shaft 7 Pulley 8 Motor 9 Timing Belt 10 Scattering Prevention Cover 11 Groove 12 Vibratory Grain Part 13 1st Vibratory Grain Transfer Section 14 2nd Vibratory Grain Transfer Part 15 Anti-vibration spring 16 Base 17 First grain transfer body 18 Anti-vibration spring 19 Base 20 Second grain transfer body 21 Grain feeding groove 22 Step part 23 Inclination 24 Carrier 25 Rice grain conveyor 26 Discharge cleaning blade 27 Discharge device 28 visible light source 29 infrared light source 30 light quantity measuring unit 31 light quantity measuring device 32 condensing lens 33 lower half mirror 34 upper half mirror 35 cut filter 36 infrared light quantity measuring element 37 red light quantity measuring element 38 green light quantity measuring element 39 arithmetic control device 40 A / D conversion 41 Differentiation circuit 42 Arithmetic control unit 43 Sorting device 44 Suction tube 45引口 46 rice grains receiving box 47 sensor 48 Seitsubu受 49 sensor

Claims (1)

[Claims] 1. A rice grain transporting unit for transporting rice grains by moving a transporter capable of transmitting light rays in the horizontal direction at a constant speed, and a grain feeding groove for vertically flowing rice grains to form the rice grain transporting unit. A vibrating grain feeding unit for feeding rice grains, a rice grain feeding unit provided on the feeding side of the vibrating grain feeding unit, and a front and rear position of an arbitrary point within a moving range after the rice grain feeding unit of the rice grain feeding unit from above the carrier. A visible light source consisting of visible light to irradiate, an infrared light source consisting of infrared light provided below the carrier to irradiate the rice grains from below the carrier, and an amount of reflected light above the carrier in relation to the arbitrary point. In a sorting device comprising a light quantity measuring unit for measuring the amount of transmitted light and a calculation control unit for calculating a measurement value of the measuring unit and sorting rice grains into a plurality of grades, the vibrating grain sending unit is a first vibrating grain sending unit. And a second vibrating grain feeding section, which determines the quality of the rice grain. Another device.