JPH03116B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hulling and sorting machine having a husking device, an oscillating sorting device, etc., and more particularly to a counting device for grains flowing down from a sampling device of the oscillating sorting device.

Conventionally, devices are well known in which grains are passed through, for example, an optical detection section using a counting gutter and the amount of grains passing through is counted. Because they were similar in shape, if the length of the counting gutter was short, the grains that were sent sequentially from upstream of the counting gutter could not maintain a predetermined distance between each other when passing through the detection part. For example, they have the drawback of being in a continuous state or in an overlapping state, resulting in a counting error. Additionally, if the length of the counting gutter is set to a length that maintains the grain interval at a predetermined length in order to eliminate the above-mentioned drawbacks, the above-mentioned counting errors can be avoided; The drawback was that it was large.

Therefore, the present invention comprises a counting gutter with an inclined straight flow section disposed in its upper part and an acceleration curved flow section disposed in its lower part, and further provided with an exciter in the counting gutter, so that the counting gutter is It is configured to vibrate in a direction approximately perpendicular to the lower part of the inclined straight flow, and the amount of grains such as brown rice, mixed rice, and paddy flowing down from the grain selection plate through the sampling tube can be accurately measured using a compact device. It is an object of the present invention to provide a counting device for an oscillating sorting device that can perform counting.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the hulling and sorting machine 1 includes a husking device 2, a grain lifting device 3, and a swing sorting device 5. The pulverizing device 2 includes a charging hopper 6, a supply amount control valve 7, a pulverizing roll 9 consisting of a pair of rubber rolls 9a and 9b, and a dust removal fan 1.
The paddy B supplied into the loading hopper 6 flows between rubber rolls 9a and 9b which are driven to rotate at a flow rate set by the supply amount control valve 7, where it is slid out and turned into brown rice. A mixture of grains consisting of .

Further, the grain lifting device 3 is composed of a bucket conveyor in which a brown rice bucket row 11 and a mixed rice bucket row 12 are arranged side by side. The mixed rice bucket row 12 transports the mixed rice from the screw conveyor 16 for transporting the mixed rice.
AB is received, transferred upward and guided to a supply gutter 17, and the mixed rice is supplied to a swing sorting device 5, which will be described later.

The oscillating sorting device 5 includes an equalizing tank 19 and a sorting tank 20, which are integrally configured.
A large number of grain selection plates 21a, 21b, and 21c are arranged inside, and the equalization tank 19 is communicated with the supply gutter 17 and communicated with the upper part of the grain selection plate 21 via the equalization valve 22, The number of grain selection plates 21 to be used can be selected by the equalizing valve 22 as necessary. The sorting tank 20, that is, the grain sorting board 21... is inclined three-dimensionally, that is, as shown in the figure, it is inclined downward to the right in the horizontal direction, and inclined so that the front side is downward relative to the plane of the paper in the vertical direction. A swing device 23 using a parallel link mechanism provides reciprocating vibration motion in a predetermined direction. And grain selection board 21...
The horizontal inclination angle θ can be adjusted, and a brown rice partition plate 25 and a paddy partition plate 26 are disposed at the lower end in the vertical direction, that is, at the exit portion, and these partition plates 2
5 and 26 are arranged so that their respective lateral positions X and Xm can be adjusted. Furthermore, brown rice partition plate 2
5 and the paddy partition plate 26 are provided with transfer troughs 27 and 2, respectively.
9 are connected, and the brown rice A, paddy B, and their mixed rice AB flowing down from the grain selection plate 21... are connected to the partition plate 25,
26 and gutters 27 and 29, and are guided to the brown rice induction chute 13, mixed rice induction chute 30, and paddy return port 31, and further to the brown rice induction chute 1.
3 is guided to the bucket row 11 for transporting brown rice as described above, the mixed rice guiding shutter 30 is guided to the screw conveyor 16 for transporting mixed rice together with the scraped mixed rice at the bottom of the roll 9, and the paddy return port 31 is electrically connected to the tensioning hopper 6. In addition, as shown in Fig. 2, a predetermined portion is placed in the horizontally upper portion of the outlet portion of the grain selection plate 21, that is, in the portion Xa where brown rice A is always located and has a constant layer thickness without being affected by the side plates. A brown rice sampling cylinder 32 consisting of a hole (round or square) or a notch is formed, and the paddy sampling tube 32 is also formed in the horizontal lower part, that is, the part Xb where the paddy B is always located and has a constant layer thickness. A cylinder 33 is formed. Further, a mixed rice sampling cylinder 35 is provided at the lower end of the mixed rice flow between the grain selection plates 21 and the brown rice partition plate 26 so as to move together with the brown rice partition plate 25. These sampling cylinders 32, 33, and 35 each collect sampled grains from a counting device 37 provided at the bottom of the sorting tank 20.
It is arranged to lead to. Note that since the sampling tube 35 has a structure that can move widely from side to side, a funnel-shaped intermediate gutter 36, for example, is provided so as to stably guide the grains therefrom to the counting device 37.

As shown in FIGS. 2 to 5, the counting device 37 includes a machine frame 40 whose lower end is pivoted to a stationary fulcrum 39 provided on the body of the hulling and sorting machine 1,
On the machine frame 40, there are provided a counting gutter 41 for brown rice, a counting gutter 42 for mixed rice, and a counting gutter 43 for paddy, which are integrally formed of, for example, a metal plate or synthetic resin. Further, a vibrator 45 is provided at the upper end of the machine frame 40, and vibrates the machine body 40 about the fulcrum 39 in a substantially orthogonal direction to the inclined straight flow sections 41a to 43a of the counting troughs 41 to 43. It's summery. In addition, the counting channels 41 to 43 have, at their upper ends,
As shown in detail in FIG. 3, the corresponding sampling tubes 32, 33, 35 are arranged at different heights depending on their positions, and at their lower ends,
As shown in FIG. 5, they are arranged at the same height, and as shown in detail in _{FIG .} Inclined straight flow parts 41a to 43a arranged in a straight line at P
and parabolic acceleration curve flow portions 41b to 43b with equal horizontal distances l and heights h ₁ to _{h 2} as boundary points a,
It is configured to be connected at b and c.

As shown in FIG. 5, optical detectors 46, 47, and 49 are provided at the lower ends of the counting channels 41, 42, and 43 of the machine frame 40, respectively.
A light cover 50 is provided from the vicinity of the lower end of the detectors 43 to the intermediate part to prevent the detectors 46, 47, 49 from causing erroneous counts due to external light. Although it differs depending on the detection method of the detector, for example, in a detector that detects reflected light from grains, the cover 50 and the inner surfaces of the counting channels 41 to 43 in the portions covered by the general light cover 50 are coated with gloss. In the case of a type that is painted black and absorbs light from the grains, the inner surface of the cover 50 is black and the counting channels 41, 43 are
The inner surface of the sensor is made smooth and mirror-like, increasing the detection accuracy of the detector.

Since the present embodiment has the above-described configuration, the hulling and sorting machine 1 is equipped with the husking hopper 7 of the hulling device 2.
The paddy B from the rice is rolled out by a rubber roll 9 and flows down, and the unfit C is screened and separated by a straw discharging fan 10, and the mixed rice AB from which the straw has been separated is sent to a screw conveyor 16. The mixed rice is sent to the feed gutter 17 of the swinging sorting device 5 via the bucket row 12, and then from the equalizing tank 19 to the grain sorting plate 21...
flowed down to. Then, the grain sorting board 21 shakes and sorts brown rice A, mixed rice AB, and paddy B, and brown rice A
Brown rice induction shutter 13 and brown rice bucket row 11
The mixed rice AB is taken out from the brown rice take-out port 15 through the paddy intake port 15, and the mixed rice AB is again sent to the supply gutter 17 together with the mixed rice from the mixed rice induction shooter 30, and the paddy B is again sent from the paddy return port 31 to the hopper 6. will be reduced to
A series of optimal hulling sorting operations are automatically continued based on the operation of various sensors such as the detectors 46, 47, and 49 shown in FIG. 5, various actuators not shown, and control devices such as a microcomputer. Let's do it. At that time, the brown rice, mixed rice, and paddy sorted on the grain selection plate 21 of the oscillating sorting device 5 are transferred to the corresponding sampling cylinders 32, 33, 35, respectively.
through which an amount exactly proportional to the total amount of each grain is sampled and guided to the inlet of each corresponding counting trough 41, 42, 43 of the counting device 37. Then, since the inclination angle P of the inclined straight flow parts 41a to 43a is set to an angle less than the static friction angle, each grain remains in the inclined straight flow part 4.
1a to 43a and do not flow down, but since the machine frame 40 is vibrated around the fulcrum 39 by the vibrator 45, the grains that are about to be deposited are As shown in the figure, the liquid flows down while being aligned at approximately the same speed along the inclined linear flow parts 41a to 43a. In addition, each counting gutter 41, 42, 4
3 is vibrated by the vibrator 45 at its upper end, the vibration becomes smaller as it approaches the fulcrum 39, that is, as the grains flow down. Then, each grain exceeds each boundary point a to c and reaches the acceleration curve downstream part 41.
From b to 43b, the velocity of each grain gradually increases, and the grains that were continuous or partially overlapped near the boundary points a to c become smaller as they flow down, and the distance between each grain d ₁ to d ₄ gradually expands, counting channels 41-4
At the detectors 46, 47, and 49 located at the lower end of the grain, each grain is completely separated and counted by each detector as a single grain. At this time, in the inclined linear flow parts 41a to 43a, each grain flows down due to the excitation force by the vibrator 45 and the weight of the grain itself _{. 3} , that is, assuming that the sampled flow rate of each grain is the same, the grain interval just before the boundary point a of the short inclined straight flow section 41a with length S ₁ is equal to the length S ₃ However, since the height _h1 of the acceleration curve flow part 41b is higher than the height _h3 of the acceleration curve flow part 43b, each The grain interval immediately before the detector 46 at the lower end of the acceleration curve 41b before reaching the detectors 46, 49 at the lower end is:
This becomes longer than the grain interval immediately before the detector 49 in the downstream part 43b of the acceleration curve. Therefore, even if the ratio of the length S ₁ to _{S 3} of the inclined straight flow portions 41 a to 43 a of the counting gutter 41 to 43 and the height h ₁ to h ₂ of the acceleration curve flow portion 41 b to 43 b is different, the counting gutter 41 to If the flow rate of each grain entering 43 is the same, the grains will fall at approximately constant intervals in front of the detector depending on the flow rate, so that the same count will be made in each detector 46, 47, 49. become. Moreover, if the counting gutter 41 to 43 of the counting device 37 is configured by combining the inclined straight flow portions 41 a to 43 a of different lengths and the acceleration curve flow portions 41 b to 43 b of different heights as described above, the counting gutter 41 to 43 of the counting device 37 The arrangement of the counting channels 41 to 43 can be freely arranged.
Moreover, the height of the device can be reduced and the width of the device can be made narrower.

As explained above, according to the present invention, in the counting device 37 of the oscillating sorting device 5, the counting gutter 4
1 to 43, the upper part of the inclined straight flow part 41a to 43
a, configured by arranging acceleration curve flow sections 41b to 43b in the lower part, further providing a vibrator 45 in the counting gutter 41 to 43, and disposing the counting gutter 41 to 43 in the inclined linear flow section 41a to 43a; Since the structure is configured to vibrate in substantially orthogonal directions, the grains flowing down each counting gutter 41 to 43 are always held at a predetermined interval so that the detector 4
6, 47, and 49, it is possible to accurately count each grain, which makes it possible to understand how the total amount of each grain changes from moment to moment. , huller sorting machine 1
It becomes possible to carry out automatic control more precisely. In addition, since the entire counting device 37 can be configured extremely compactly, the hulling and sorting machine 1
The degree of freedom in design will increase.

[Brief explanation of the drawing]

Fig. 1 is an overall schematic diagram showing a hulling and sorting machine to which the present invention is applied, Fig. 2 is an enlarged view of the counting device of the swing sorting device, Fig. 3 is a sectional view taken along the line A-A in Fig. 2, 4 is a sectional view taken along the line BB in FIG. 2, FIG. 5 is a sectional view taken along the line CC in FIG. 2, and FIG. 6 is an explanatory diagram of the operation of the counting gutter. 5... Oscillating sorting device, 21a, 21b, 21c
... Grain sorting board, 32, 33, 35 ... Sampling cylinder, 37 ... Counting device, 39 ... Fulcrum, 41, 4
2, 43... Counting gutter, 41a, 42a, 43a...
... Inclined straight flow section, 41b, 42b, 43b...
Acceleration curve downstream part, 45...exciter.

Claims (1)

[Scope of Claims] 1. A grain sorting plate, a sampling tube disposed at the grain flow lower end of the grain sorting plate, and a counting gutter that guides grains sampled from the sampling tube to a detector;
In the counting device of the oscillating sorting device, which is equipped with a detector for counting the grains flowing down the counting gutter, the counting gutter is provided with an inclined linear flow section having a predetermined inclination angle, which is substantially linear in the upper part, and a lower part of the counting gutter. An accelerating curve flow lower part consisting of a predetermined curve is disposed in the counting gutter, and a vibrator is provided in the counting gutter so as to vibrate the counting gutter in a direction substantially perpendicular to the inclined straight flow flow part. Counting device in the oscillating sorting device. 2. Claim 1, wherein a plurality of counting troughs having different length ratios of the inclined straight flow section and the acceleration curve flow section are disposed in parallel with their lower ends brought together in one place. Counting device in oscillating sorting equipment.