JPS6150665B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an automatic adjustment device for an oscillating grain sorter.

The grain sorting board of the present invention tilts upward in the front and swings, so light grains (paddy) with a large friction coefficient are placed at the rear, and heavy grains (brown rice) with a small friction coefficient are placed at the front. They are concentrated in the opposite direction and flow out to the terminal part in the lateral direction, but at this time, the drift phenomenon changes slightly depending on the amount of grain on the grain selection plate surface, especially at the beginning or end of the oscillating sorting. Sometimes the flow changes drastically. and,
This drifting phenomenon is caused by foreign grains flowing down and getting mixed into the brown rice passageway of the discharge gutter provided at the end of the grain sorting plate until the flow change becomes normal. It is necessary to automatically switch the brown rice passageway to the circulation circuit for the re-sorting process, and to immediately switch the brown rice passageway to the discharge passageway leading to the outside of the machine as soon as the grain flow state is restored to normal.

The present invention provides a weighing container that moves up and down depending on the change in the amount of grain flowing down from the grain selection plate in the discharge gutter of the oscillating grain sorting machine, and also includes a discharge passage leading to the outside of the brown rice passage and the grain selection plate. A switching valve is provided at a branch part that branches into a circulation circuit that passes through the plate multiple times, and the switching valve is connected to the grain selection plate by an interlocking device that switches in relation to the vertical movement of the measuring container. This is a high-performance machine that automates the switching of the brown rice outflow passage at the branching section based on changes in the amount of grain flowing down from the surface, completely preventing the contamination of different grains, and always mass producing high-quality selected grains reliably and quickly. The aim is to develop and provide the equipment.

To explain the present invention with reference to the drawings, Fig. 1 is an overall view of the apparatus in which the oscillating grain sorter A is combined with the removing devices B and C. In the figure, B is a rectangular aspirator base; This is a sorting device that is integrally formed by mounting a roll shaft removing machine C on one side in the upper length direction of a base B and a swinging grain sorting machine A on the other side. The raw paddy fed into the supply hopper 1 of the demasher C flows down between the derolls 2 and 2 in the demasher C and is dehulled. The mixed grains of paddy and brown rice are discharged outside the machine through the exhaust pipe 3, and the mixed grains of paddy and brown rice are collected at the bottom of the base and sent to the grain selection plate of the oscillating grain sorter A through the storage tank 5 of the elevator 4. 6. Then, by the swinging action of the grain selection plate 6, the mixed grains on the plate are separated into front and rear directions, flowing laterally, and flowing down into the discharge gutter 8 provided at the end 7 of the plate. The mixed grains of paddy and brown rice flowing through the central area flow out from the mixed grain outlet 11 and enter the circulation circuit 1.
0, from the circuit 10, passes through the base B and elevator 4, circulates through the grain sorting plate 6, and is re-sorted. The machine is also shaped so that brown rice flows out from the brown rice outlet 9 and is taken out of the machine via the thrower 12, and paddy flows out from the paddy outlet 13 and is returned to the hopper 1 via the thrower 14. be.

Next, FIG. 2 is a side sectional view of the discharge gutter 8, in which a guide wall 1 is provided at an appropriate interval in the discharge gutter 8.
5 and 15 are installed movably, and brown rice passage 16, paddy brown rice passage 17, and paddy passage 18 are installed at the bottom of the gutter.
are provided on the outflow side of each passage.
1 and 13, respectively, and the unhulled brown rice passage 1 of the circulation circuit 10 passes through the discharge passage 19 through which the brown rice passage 16 communicates with its take-out port 9 and the grain selection board 6 a plurality of times.
A switching valve 21 is pivotally connected to a branching part 20 that branches into 7 and 7 so as to be openable and closable, and a fulcrum 22 is provided on the side wall of the discharge gutter 8 to support a lever rod 23, and the lever rod 23 projects outside the gutter. One end is fixed to the wall by a stopper 24 and a bullet 25, and a measuring container 26 is attached to the other end protruding into the gutter. The container 26 has an adjustment outlet 28 at the lower part of the hopper 27, which has an open top, to receive the grains flowing down from the grain sorting plate 6, and also discharges a portion of the grains from the outlet 28 as appropriate. A predetermined amount of grain is stored,
The container 26 is formed to move up and down as the grain amount increases and decreases, and an interlocking device 29 is provided so that the switching valve 21 of the brown rice passage 16 is switched in relation to the up and down movement of the container 26. They are connected together. The interlocking device 29 shown in the figure connects the shaft of the switching valve 21 and the locking fitting of the hopper 27 by a connecting rod 30, and 31 is a locking slot provided at one end of the connecting rod. The interlocking device 29 shown in FIG. 3 has a solenoid 33 that operates the switching valve 21 in response to a contact signal from a limit switch 32 fixed at an opposite position of the lever 23 facing the bullet 25. be.

With the above-mentioned structure, the mixed grains supplied to the grain sorting plate 6 are moved by the swinging action of the inclined grain sorting plate so that the paddy is placed at the rear (below) of the inclined sorting surface, and the brown rice is placed at the rear (below) of the inclined sorting surface. The rice is concentrated toward the front and flows to the horizontal plate end portion 7, where it is separated into brown rice, paddy, brown rice, and paddy, and flows down into the passages 16, 17, and 18, respectively. The grain flowing state on this board surface is such that if the grains move while maintaining an appropriate layer height (standard grain amount) on the grain selection board surface, the sorting action will be performed accurately and smoothly, so the discharge gutter 8 Only brown rice flows down the brown rice passage 16, and the flow rate of grains flowing down each passage 17, 18 is approximately constant. When the number of grains on the grain sorting board surface is less than the standard grain amount, the drifting phenomenon on the board surface changes drastically, and the brown rice mixed with paddy flows down into the brown rice passage 16, and the brown rice mixed with paddy flows down into each passage 17 and 18. The flow rate of grains flowing down decreases and becomes unstable. Therefore, when the oscillating grain sorting machine comes to the end of its sorting work,
In particular, in the oscillating grain sorter attached to the threshing machine, there is a shortage of raw materials for threshing, which causes a drift phenomenon, and the amount of grain flowing into the weighing container 26 suspended in the discharge gutter 8 decreases, causing Due to the tensile force of the bomb 25, the container 26 is lifted from the lower position shown by the two-dot chain line in FIG. 2 and moved to the upper position shown by the solid line. The switching valve 21 is automatically operated to close the brown rice discharge passage 19, and the circulation circuit 10 is opened.
Since the grains flowing down flow into the circulation circuit 10,
This prevents brown rice mixed with paddy from being mixed with the brown rice that flowed out earlier, and by automating the opening, closing, and switching operations of the passage, it is effective in saving labor, increasing efficiency, and improving sorting accuracy.

In the interlocking device shown in FIG. 3, while the weighing container 26 is lowered to the lower position by a predetermined grain weight, the solenoid 33 is activated by a switch signal generated by the contact between the end of the pin switch 32 and the end of the screw rod 23, and the solenoid 33 is switched. The valve 21 opens the brown rice discharge passage 19 to discharge the brown rice flowing down the brown rice passage 16 to the outside of the machine, and when the amount of grains in the container 26 decreases, the container floats up and leaves the contact with the switch 32. In response to this signal, the switching valve 21 opens the circulation circuit 10 side and returns the brown rice flowing down the passage 16 to the grain selection plate 6, exhibiting the same special effect as the connecting rod 30, and always producing high quality selected grains. This is to mass-produce grains reliably and quickly.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention, and FIG. 1 is a side view of the present desorting device, FIG. 2 is a side view of the main parts thereof, and FIG. 3 is a side view of the main parts of the second embodiment. 1... Supply hopper, 2... De-rolling, 3...
...Exhaust pipe, 4...Elevator, 5...Storage tank, 6
... Grain sorting board, 7 ... Board surface terminal part, 8 ... Discharge gutter,
9...Brown rice outlet, 10...Circulation circuit, 11...
Mixed grain outlet, 12...Thrower, 13...Paddy removal port, 14...Thrower, 15...Guide wall, 16
...Brown rice passageway, 17...Paddy brown rice passageway, 18...Paddy passageway, 19...Discharge passageway, 20...Branch section, 21
...Switching valve, 22...Fully point, 23...Rice lever, 2
4... Stopper, 25... Bullet machine, 26... Measuring container, 27... Hopper, 28... Adjustment outlet,
29... Interlocking device, 30... Connecting rod, 31... Locking slot, 32... Limit switch, 33...
Solenoid, A...oscillating grain sorter, B...aspirator base, C...roll shaft removing machine.

Claims (1)

[Claims] 1. Vibrating the grain selection plate with a rough surface back and forth,
The mixed grains supplied to the grain sorting board are separated into the front and rear, flowing laterally, and discharged from three passages for paddy, paddy brown rice, and brown rice in a discharge gutter provided at the end of the plate. A switching valve is provided at a branching part of the brown rice passageway that branches into a discharge passage leading to the outside of the machine and a circulation circuit that passes through the grain selection plate a plurality of times, and a change in the amount of grain flowing down into the discharge gutter is provided. Accordingly, a passage switching device for an oscillating grain sorting machine is provided with a measuring container that moves up and down, and is connected by an interlocking device so that the switching valve switches in relation to the up and down movement of the container. 2. The path switching device for an oscillating grain sorting machine according to claim 1, wherein the weighing container is a hopper provided at the other end of a screw rod whose one end is secured by a bullet. 3. The path switching device for a swing grain sorting machine according to claim 1 or 2, wherein the interlocking device is a connecting rod that directly connects the measuring container and the switching valve. 4. The passage of the oscillating grain sorting machine according to claim 1 or 2, wherein the interlocking device is a solenoid that operates a switching valve based on a signal from a limit switch provided on the bullet side of the lever. Switching device.