JPS6234431B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in grain sorting equipment.

Conventionally, it is common knowledge that grains on a porous wall plate are subjected to specific gravity sorting while being floated in the form of a jet using wave-like wind. All of these wavy winds are intermittent wave winds, and at the same time, the wind blows intermittently over the entire surface of the grain layer synchronously, causing the grain layer to flow irregularly and causing confusion, and also against the entire surface of the sorting plate. It is difficult to supply air in a uniformly distributed manner, which disrupts the sorting accuracy, and the problem is that intermittent blast sounds are generated as loud noise.

The present invention is intended to solve the above-mentioned drawbacks, and the present invention is to solve the above-mentioned drawbacks. A window hole is opened at an angle where the wind blows toward the surface, and an endless belt is rotatably mounted to allow the wind to flow all over the grain layer in the direction that advances the position of the grains on the sorting plate surface. By tracking and moving the grains forward while floating in a jet so that the grain waves are surging in a waveform, the grains are sprayed uniformly and regularly over the entire surface of the sorting plate, and moreover, in a wavy and tracking manner. The purpose is to develop and provide a device that levitates grains and performs high-precision specific gravity sorting.

To explain the present invention with reference to an embodiment diagram, a sorting plate 1 with an uneven surface tilted in either the front or rear or left or right direction.
The lower side plate end of the plate 1 is opened to form a grain discharge port 2, and the plate ends in the other three directions are surrounded by side walls 3 to form a sorting frame 4. A lower air chamber 5 of the sorting plate 1 is provided and fixed to the sorting frame 4, and the air chamber 5 is connected to a blower 7 through an air passage 6, and one end of the sorting frame 4 is horizontally mounted on a base 8. The operating handle 13 is rotatably mounted on a rotating shaft 9, and the other side end is supported by an angle adjusting device 12 consisting of a support rod 10 and a screw shaft 11.
The sorting frame 4 is moved up and down by the rotation of the sorting plate 1, thereby adjusting the inclination angle α of the sorting plate 1 in the front-rear direction.

The sorting plate 1 has a large number of small holes 14 on its plate surface.
Examples of the small holes are shown in FIGS. 7 and 8. Further, inside the air chamber 5, there are axle pulleys 1 at the front and rear of the lower side walls of the sorting frame 4, which are the side walls thereof.
5 and 16 are rotatably attached to the shafts, and the endless tuning band 17 is suspended around both shaft pulleys 15 and 16 so as to rotate. A large number of window holes 18 are opened at an angle where the wind blows forward and are brought close to the upper sorting plate 1, and the wind moving by the rotation of the endless band 17 is used to blow the air onto the sorting plate 1. The grain layer is formed so that the grain layer is floated by continuous wave motion, and the discharge port 2 of the sorting plate 1 is provided with a boundary plate that separates and discharges three types of grain groups: paddy, paddy rice, mixed rice, and brown rice. 19,20
A discharge gutter 21 is installed. 22 is a supply hopper provided on one side of the upper part of the sorting plate 1, 23 is a blower electric motor, 24 is a forward/reverse rotation electric motor provided on the angle adjustment device 12, and 25 and 26 are both placed on the upper and lower parts of the discharge side of the sorting plate, respectively. This is a photoelectric device that measures the flow state of grains provided.

Next, FIGS. 3 and 4 show the second embodiment,
One end of the sorting plate 1 in the left and right lateral directions is rotatably attached to a base 27 by a rotation shaft 28, and the other end is attached to an angle adjustment device 31 consisting of a support rod 29 and a screw shaft 30. The sorting frame 4 is moved up and down by rotation of the operating handle 32 to adjust the inclination angle β of the sorting plate 1 in the left and right directions. A photoelectric device consisting of a light source and a light receiving element provided on both sides of the lower side of the plate surface in the left and right lateral directions, and each of the photoelectric devices 33 and 34 measures the flow state of grains passing through the respective portions.

With the above-mentioned configuration, when the raw material grains of mixed paddy rice and brown rice are fed into the supply hopper 22 and the device is driven, the mixed grains flow down onto the first surface of the sorting plate and flow to the lower side to be properly distributed. Forms a layer of grains distributed in layer height. This grain layer floats up due to the wind flowing from the air chamber 5 at the bottom of the sorting plate 1 through a large number of small holes 14 provided on the surface of the plate, and the specific gravity of each type of grain is sorted. , the device of the present invention provides a large number of small holes 14 in the tilted sorting plate 1 having an uneven surface, and
In the air chamber 5 provided at the bottom of the sorting plate, the upper circumferential surface of the strip 17 has window holes 18 regularly opened in various places on the strip surface at an angle that blows the air obliquely upward and forward. Since the grain layer on the sorting plate 1 is floated by a continuous wave jet flow by rotating the adjustment belt 17 close to the lower surface and subjected to specific gravity sorting, the grain layer formed on the one side of the sorting plate is When the layer is moved diagonally forward from the small holes in the plate surface, the wind that flows out forms a wave shape, and the grain waves float up and move forward while chasing the grains, so that the grains on the entire surface of the sorting plate are On the other hand, the grains are blown uniformly and regularly, and are floated in a wave-like and tracking manner to sort the grains by specific gravity. Brown rice with a low specific gravity drifts toward the front of the board, and unhulled rice with a high specific gravity flows toward the rear of the board. The mixed rice of unhulled rice and brown rice flows in the middle part of the drifting flow, flows out to the side of the discharge port 2 in the horizontal direction, is separated by the boundary plates 19 and 20 in the discharge gutter 21, and is discharged to the outside of the machine. be done.

In addition, FIG. 4 shows the window hole 18 provided in the adjustment belt 17, and FIGS. 5 and 6 are both examples of the uneven surface and the small hole 14 used in this device, and the discharge gutter 21. The boundary plates 19 and 20 provided on the sorting plates can be adjusted to move left and right, respectively, according to changes in grain flow on the sorting plate. In addition, the photoelectric devices 25 and 26
In some cases, the electric motor 24 of the angle adjustment device 12 and the blower electric motor 23 are electrically and relatedly connected to form an automatic adjustment device. Also, the shaft pulley 1
In some cases, the number of rotations of 5 or 16 may be increased or decreased.

Therefore, this grain sorting device blows air evenly and regularly over the grains all over the surface of the sorting plate, levitates the grains in a wavy and tracking manner, and adjusts the elevation angle of the sorting plate in two directions. Since specific gravity sorting is carried out by adjusting the grain layer and stabilizing the grain layer, it is possible to achieve extremely high-precision specific gravity sorting, improve the sorting performance, and improve the environment without generating the above-mentioned blast-like noise. This has the effect of improving work efficiency by maintaining it in good condition, and ensuring mass production of high-quality carefully sorted grains at all times in a smooth and prompt manner.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention; FIGS. 1 and 3 are side sectional views of the entire device, and FIGS.
Both figures are a front view, FIG. 5 is an enlarged perspective view of the endless tuning belt, FIG. 6 is a partially enlarged sectional view of the endless tuning belt, and FIG.
8 and 8 are both sectional views of a part of the sorting plate, and FIG. 9 is a plan view of the sorting plate. 1... Sorting board, 2... Grain discharge port, 3... Side wall, 4... Sorting frame, 5... Air chamber, 6... Air duct,
7...Blower, 8...Base, 9...Rotary axis, 10...
... Support rod, 11 ... Screw shaft, 12 ... Angle adjustment device, 13 ... Operation handle, 14 ... Small hole, 1
5, 16... Axial pulley, 17... Endless tuning band, 18...
... Window hole, 19, 20 ... Boundary plate, 21 ... Discharge gutter, 22 ... Supply hopper, 23 ... Electric blower motor, 24 ... Forward/reverse rotation motor, 25, 26 ...
...Photoelectric device, 27... Base, 28... Rotation axis, 29
... Support rod, 30 ... Screw shaft, 31 ... Angle adjustment device, 32 ... Operation handle, 33, 34 ... Photoelectric device, α ... Anteroposterior inclination angle, β ... Left and right inclination angle .

Claims (1)

[Scope of Claims] 1. A sorting plate with an uneven surface tilted either forward or backward or left or right is provided with a large number of small holes so as to blow air, and the wind is sprayed regularly in places on the belt surface diagonally upward and forward. The upper circumferential surface of the belt, which has a window hole opened at an angle that blows the wind, is suspended between pulleys so that it rotates close to the lower surface of the sorting plate, and the said belt is formed at the bottom of the sorting plate. The air chamber and the blower are connected by an air passage, and the grain layer on the sorting plate is jetted in a continuous wave motion due to the jet moving by the rotation of the adjustment band. Gravity sorting is carried out while floating, and brown rice is placed near the front.
In addition, while the paddy is being diverted to the rear, three grain groups of paddy, paddy rice, mixed brown rice, and brown rice are separated and flowed out to the lower end of the plate tilted to either the left or right side of the sorting plate. Characteristic grain sorting equipment. 2. The grain sorting device according to claim 1, wherein a boundary plate is provided on the lower side of either the left or right side of the sorting plate to separate each flow of paddy, paddy rice, brown rice, and brown rice in a movable and adjustable manner. . 3. Claim 1, which is provided with an angle changing device that adjusts the longitudinal inclination angle of the sorting plate together with the adjustment band.
The grain sorting device described in section. 4. Claim 1, further comprising an angle changing device that adjusts the horizontal inclination angle of the sorting plate together with the adjustment belt.
The grain sorting device described in section.