JP2000202366A - Stone removing sorter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recover grain without wastefulness by supplying grain to be sorted to a sorting metal net and subsequently further separating the grain and stone particles remaining on the sorting net. SOLUTION: A grain discharge port 38 is provided to the front end portion of a sorting metal net 5 having a large number of cut and raised tongue pieces provided on the surface thereof and also having a large number of air vent fine holes provided thereto, and a stone gathering portion is provided to the rear portion thereof and a stone particle discharge port is provided to the bottom surface thereof, and a residual rice discharge metal net 6 having a residual rice outlet provided to the front end portion thereof and having a large number of air vent fine holes provided to the surface thereof is provided on one side of the sorting net 5 through a side plate and these nets are inclined so as to become low forwardly and a residual take-out port is provided to the side plate in a freely openable and closable manner. A windmill box 7 having a windmill 29 mounted therein is integrally attached under the sorting net 5 and the residual rice discharge metal net 6 through a wind tunnel portion, and air is sent through the air vent fine holes and air vent holes and the nets 5, 6 are obliquely shaken up and down to separate grain and stone particles and, when the supply of unseparated grain is completed, the air blow of the windmill 9 and the shaking of the sorting metal net 5 and the residual rice discharge metal net 6 are intesified for a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a stone removing and sorting apparatus for removing foreign matter such as pebbles from grains such as rice.

[0002]

In a stone removing and sorting apparatus, a sorting wire mesh is provided at an inclination, and while the wind is being blown up from below, the rocking device is swung up and down so that a stone having a large specific gravity is inclined. The rice that has a low specific gravity is swept downstream to separate the two, and even if the wire mesh swings up and down diagonally, the rice does not flow downstream and remains unseparated from the stone in the sorted wire mesh. Remains as rice. An object of the present invention is to collect such residual rice as quickly as possible.

[0003]

According to the present invention, a grain discharge port is provided at the front end of a sorting wire net which is erected from left and right and has a low slope at the front, and a large number of cutouts are formed on the surface of the sorting wire mesh toward the rear. In addition to providing a tongue piece, opening a large number of ventilation pores toward the rear, narrowing the left and right spacing of the side plate at the rear of the sorting wire mesh to form a stone gathering part, and at the bottom bottom of the stone gathering part An openable stone grain discharge port is provided, a remaining rice discharge wire mesh is installed adjacent to either the left or right side plate of the sorting wire mesh and inclined in the same direction as the sorting wire mesh, and a remaining rice outlet is provided at the front end of the wire mesh. A guide plate is erected on the outer edge of the remaining rice discharging wire mesh except for the exit, and a large number of ventilation holes are formed in the remaining rice discharging wire mesh to penetrate perpendicularly to the plane of the guide plate. A remnant rice take-out port is provided in the sorting wire mesh side and the remnant rice discharging wire mesh side can be opened and closed freely to connect with the sorting wire mesh. A windmill box with a windmill inside it is attached to the lower part of the rice discharge wire mesh through a wind tunnel unit to form a sorting unit, and a swinging mechanism is connected to the sorting unit to swing the whole sorting unit up and down diagonally, and swing A variable-speed drive source is connected to the mechanism and the windmill, and the stone is driven at a higher speed than when sorting stones.

[0004]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view along the length direction of the stone sorting apparatus, and FIG. 2 is a cross-sectional view along the width direction. Machine frame 1
Is provided with a funnel-shaped tank 2 having a grain supply port 3 at the bottom. Upper rice sensor 3 on top of tank 2
3. A lower rice sensing sensor 34 is provided at the lower part,
Is provided with an insertion shutter 4. A sorting unit A is provided below the tank 2, and the sorting unit A includes a sorting wire mesh 5, a remaining rice discharging wire mesh 6, and a windmill box 7, and a wind tunnel portion 8 covering the lower surfaces of the sorting wire mesh 5 and the remaining rice discharging wire mesh 6. The windmill box 7 is integrally mounted through the intermediary.

[0005] A pair of support plates 9 are erected along the left and right sides at the lower portion of the machine frame 1, a sorting portion A is sandwiched between the support plates 9, and a windmill box 7 is provided in front of the pair of support plates 9. Windmill rotation axis 10
Is rotatably supported. The left and right side walls of the sorting unit A are rotatably supported by one end of a pair of front and rear support rods 11, and the other end of each of the support rods 11 is rotatably supported at a predetermined position above the support plate 9. A is held swingably. Further, an electric motor 17 is arranged on one outside of the support plate 9, and a crank rotation shaft 13 of the swinging crank 12 is supported in parallel between the support plates 9, and a windmill pulley 14 is provided on the electric motor 17 side of the support plate 9. , A windmill rotating shaft 10 and a crank rotating shaft 1 via a swing pulley 15 and a motor pulley 16.
3 are connected by one belt 18.

FIG. 3 is a plan view of the sorting section A, and FIG. 4 is a side sectional view of the same. The sorting wire mesh 5 has right and left side plates 19a and 19b, and a grain discharging port 38 is provided at the front end of the sorting wire mesh 5. The distance between the left and right side plates 19a and 19b is narrowed at the rear portion of the sorting wire mesh 5 to form a stone gathering portion 20, and the stone gathering portion 20 is formed.
A stone discharge port 21 is opened on the bottom surface. Ventilation pore 2 cut and raised rearward on the bottom surface of sorting wire mesh 5 and having tongue piece 40 erected
3 are opened. A stone discharge shutter 22 is provided at the stone discharge port 21. A stone discharge chute 39 is provided on the machine frame 1 so as to face the stone discharge port 21 and beneath it.

FIG. 5 is a cross-sectional view of the stone discharge port. A guide rail 41 for supporting the stone discharge shutter 22 is provided below the stone discharge port 21. The stone discharge shutter 22 is formed of an elastic steel plate. A part of the corrugated portion is formed in a corrugated shape except for a portion covering the granule discharging port 21, and the corrugated portion is pressed against the guide rail 41 to fix the granule discharging shutter 22 at an arbitrary position. If a part of the stone discharge shutter 22 is formed in a waveform as described above, the vibration of the stone discharge shutter 22 during operation can be suppressed, and the noise level of the stone separation device can be reduced. Adjacent to the side plate 19b of the sorting wire mesh 5, a remaining rice discharging wire mesh 6 inclined forward and low is provided similarly to the sorting wire mesh 5, and a remaining rice outlet 24 is provided at the front end thereof. Remaining rice discharge wire net 6
Are provided with a large number of ventilation holes 25 on a flat board surface. The guide plate 26 is erected on the other side of the remaining rice discharge wire mesh 6, and
Is integrally surrounded with the rear end of the sorting wire net 5. A plurality of remaining rice outlets 27 are opened in the side plate 19b of the sorting wire net 5 looking into the stone gathering portion 20, and a remaining rice discharging shutter 28 is provided in the remaining rice outlet 27 so as to open and close in conjunction therewith. Connect to 6. The remaining rice discharge shutter 28 is opened and closed by a plunger 42 and a spring 43 provided at the rear. As a method of opening and closing the remaining rice discharge shutter 28, a dedicated motor may be provided, and the shutter may be opened and closed by this motor. The windmill box 8 is provided with a wind tunnel portion 30 provided with a windmill 29 at a lower front portion.

The oscillating mechanism B drives an electric motor 17 to rotate a wind turbine rotating shaft 10 and a crank rotating shaft 13 via a belt 18 by a motor pulley 16 and to blow a wind through a wind tunnel 30 by a wind turbine 29. In addition to being spouted above the sorting wire mesh 5 and the remaining rice discharging wire mesh 6, the swinging crank 12 is rotated by the crank rotation shaft 13, the windmill box 7 is pushed up by the tip of the swinging crank 12, and the sorting portion A is moved obliquely up and down. Rocks in the direction. In this embodiment, the sorting unit A is pivotally supported by a pair of left and right support plates 9 by four support rods 11 to swing the sorting unit A. It is rotatably supported by a pair of support plates 9 and two rear portions of the sorting unit A are 2
It may be supported by one support rod 11. Alternatively, the selection unit A may be directly attached to a vibration source such as a vibration motor, and the vibration may swing the selection unit A.

FIG. 6 is a control block diagram of the stone sorting apparatus. A control processing unit 35 is connected to the motor 17 via a motor control circuit 36. The motor 17 is activated to rotate the motor 17 in rotation speed. The number of rotations is detected by the number detection circuit 37 and fed back to the motor control circuit 36 to control the rotation speed of the motor 17 to a predetermined rotation speed to continue the operation. The control processor 35 includes an upper rice sensor 33 provided in the tank 2.
The lower rice sensor 34 is connected to the lower rice sensor 34. The upper rice sensor 33 or the lower rice sensor 34 sends a signal from the upper rice sensor 33 or the lower rice sensor 34, following the increase or decrease of the grain mixed with the stones put into the tank 2.
The motor control circuit 36 is controlled to control the rotation speed of the motor 17 within a predetermined range. As the rice sensing sensor, a capacitance sensor, a granular material sensor, a pressure sensor, a micro switch, or the like is used.

[0010] Here, the grains mixed with the stones are put into the tank 2, and the grains cover the lower rice sensor 34, and the control processor 35 sends a signal from the lower rice sensor 34 to the motor control circuit 36. To start the operation of the electric motor 17 and blow up the blast from the ventilation hole 23 of the sorting wire mesh 5 and the ventilation hole 25 of the remaining rice discharge wire mesh 6 by the wind turbine 29, and simultaneously swing the swing mechanism B by the swing crank 12. Swing up and down diagonally.

Then, the grains mixed with the stones are supplied to the sorting wire mesh 5 through the grain feeding port 3, and the crushing of the sorting wire mesh 5 and the blowing air blown out from the ventilation holes 23 cause the grains having a small specific gravity. Floats on the upper layer of the sorting wire mesh 5, and the stone having a large specific gravity sinks in the lower layer. The upper grain is slid down by its own weight along the inclination of the sorting wire mesh 5 by rocking, and is discharged from the grain discharge port 38. The lower grain is cut and raised, shaken up by the tongue piece 40, and moved upward. It moves and gathers at the stone gathering unit 20, and periodically opens the stone discharge shutter 22 by the plunger 42 to discharge the stone from the stone discharge port 21, and discharges the stone to the outside by the stone discharge chute 39.

With the stone particles almost recovered, the side plate 19b
Rice discharge shutter 28 of a plurality of remaining rice outlets 27 provided in
Are simultaneously opened, and the grains are sequentially transferred to the remaining rice discharging wire net 6 from the remaining rice outlet 27. Here, since the remaining rice outlet 27 has a plurality of openings along the inclination of the remaining rice discharging wire netting 6, a plurality of openings are provided.
The remaining grains can be transferred from the nearby remaining rice outlet 27 to the remaining rice discharging wire net 6 in a relatively short time without swinging the grains left to the vicinity of the stone gathering section 20. The grains transferred to the remaining rice discharging wire net 6 float by the blast from the vent 25,
The remaining rice is discharged from the remaining rice outlet 24 below by the swinging of the remaining rice discharge wire net 6. When the amount of kernels remaining on the sorting wire mesh 5 decreases, the blast generated by the windmill 29 flows more toward the sorting wire mesh 5 where the ventilation resistance of the grains is low, and the amount of blast of the remaining rice discharging wire mesh 6 decreases. Since the rice discharging wire mesh 6 has a smooth surface, it does not have the swinging action of the sorting wire mesh 5, and even if the blast is slightly reduced, the rice is quickly slid down to the remaining rice outlet 24 along the slope by the swing.

When untreated kernels are continuously being supplied to the sorting wire net 5, this operation is continued, but the kernels in the tank 2 decrease, and the lower rice sensor 34 removes the kernels. When the detection is stopped, the signal is sent to the control processing unit 35, and the motor control circuit 36 is controlled to increase the rotation speed of the motor 17 by, for example, about 20% and continue the idling operation for, for example, about 8 seconds. During this time, the blast from the wind turbine 29 and the rocking of the rocking mechanism B are strengthened, and the stones having a high specific gravity are collected faster by the rocking unit 20 by the stronger rocking, and the kernels having a low specific gravity are blown off and the kernels are blown away. The amount of grains discharged from the grain discharge port 38 and remaining on the sorting wire net 5 is reduced. The grains of the remaining rice discharging wire net 6 are also quickly sent to the remaining rice outlet 24 by the strong blast through the ventilation holes 25 and the strong swing of the remaining rice discharging wire mesh 6. Thereafter, the stone discharge shutter 22 is opened, and the kernel mixed with the remaining stone is discharged to stop the stone removal and sorting apparatus. As a method of changing the rotation speed of the swing crank 12 and the wind turbine 29, a variable speed motor control of the electric motor 17, an inverter control, and the like are used. The swing crank 12 and the wind turbine 29 are operated by different motors, respectively. There is a method of changing the rotation speed to an optimum rotation speed.

[0014]

As described above, conventionally, when the number of grains to be sorted in the sorting wire mesh is reduced, the grains and stones of the sorting wire mesh remain dispersed in the sorting wire mesh without being easily separated. Whereas the grains remaining with the stones were discarded as they were, in the present invention, when the number of grains to be selected was reduced, the number of rotations of the electric motor was increased, the blast from the windmill was increased, and By increasing the rocking force, the grains with a lower specific gravity will rise and be more easily sent to the grain outlet, and the grains with a higher specific gravity will be cut and raised, and will be more easily collected by the tongue pieces at the upper rock-side. In addition, the effect of promoting the separation of the grains from the stones and reducing the amount of the grains discharged without being separated from the stones is produced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view along the length direction of a stone sorting device.

FIG. 2 is a sectional view along a width direction of the stone sorting apparatus.

FIG. 3 is a plan view of a sorting unit A.

FIG. 4 is a sectional view taken along the line P-OP of FIG. 3;

FIG. 5 is a cross-sectional view of a stone outlet.

FIG. 6 is a control block diagram of the stone sorting apparatus.

[Explanation of symbols]

 Reference Signs List A sorting unit B swing mechanism 1 machine frame 2 tank 3 grain supply port 4 insertion shutter 5 sorting wire net 6 remaining rice discharge wire net 7 windmill box 9 support plate 10 windmill rotation shaft 11 support rod 12 swing crank 13 crank rotation shaft 14 Windmill pulley 15 Swing pulley 16 Motor pulley 17 Motor 18 Belt 19a, 19b Side plate 20 Stone gathering part 21 Stone discharge port 22 Stone discharge shutter 23 Vent pore 24 Remaining rice outlet 25 Vent hole 26 Guide plate 27 Remaining rice removal Exit 28 Residual rice discharge shutter 29 Windmill 30 Wind tunnel 33 Upper rice sensor 34 Lower rice sensor 35 Control processor 36 Motor control circuit 37 Rotational speed detection circuit 38 Grain discharge port 39 Stone discharge chute 40 41 Guide rail 42 Plunger 43 Spring

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuichi Haruki 2nd Wakasugi, Kamiichi-cho, Nakashinkawa-gun, Toyama F-term in Marumas Machinery Co., Ltd. (reference) 4D021 FA09 GA03 GA08 GA16 GA23 GB01 HA03

Claims (1)

[Claims] 1. A grain discharge port is provided at a front end of a sorting wire net having a side plate standing upright and inclined forward at a low angle, and a large number of cut-and-raised tongue pieces are provided rearward on the surface of the sorting wire mesh. A large number of ventilation holes are opened toward the rear, the left and right spaces of the side plates are narrowed at the rear part of the sorting wire mesh to form a stone gathering part, and a stone grain outlet that can be opened and closed at the bottom of the innermost part of the stone gathering part A remnant rice discharge wire mesh is installed adjacent to one of the left and right side plates of the segregation wire mesh and inclined in the same direction as the segregation wire mesh. A guide plate is erected on the outer edge, and a large number of ventilation holes are formed in the remaining rice discharging wire net vertically penetrating the plane thereof, and a remaining rice outlet is provided at a rear portion of a side plate in contact with the remaining rice discharging wire mesh of the sorting wire mesh, The sorting wire mesh side and the remaining rice discharging wire mesh side are openably and closably communicated with each other, and further below the sorting wire mesh and the remaining rice discharging wire mesh. A windmill box with a windmill inside is integrally attached to form a sorting unit, and a swinging mechanism is connected to the sorting unit to swing the entire sorting unit obliquely up and down. A stone removal sorting device that connects to a drive source and drives at a higher speed during stone removal than during stone sorting.