JPS59276B2 - stone grain sorting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a stone-pulling grain sorting machine, and in order to equalize the thickness and flow of the grain flow layer on the sorting plate, uniform wind is applied over the entire width of the grain flow layer. It was developed to concentrate and increase the mixing rate of mixed grains by blowing grains almost parallel to the board surface from the high side to the low side, blowing down only the grains and accumulating them on the high side. It is something.

In general, the greatest requirements for the accuracy of soil grain selection in grains are the distribution of wind blowing through the sorting plate, the thickness of the grain flow layer tilting over the sorting plate, and the uniformity of the flow over the entire surface. be.

However, the mixing ratio of soil and sand particles is extremely small, usually 0.00.
Since it is about 1 to 0.03%, a large amount of grains are mixed in the above-mentioned mixed grains of earth and sand.

The sorting action of an ordinary stone removal sorter is that the wind blowing through the perforated wall of the sorting plate gives buoyancy to light grains and makes them float, and the heavy soil grains that settle on the sorting plate are separated from the grains on the same side, which is larger than the angle of inclination and elevation of the sorting plate. Due to the action of a type of vibrating conveyor that swings at an elevation angle, grains are sent upwards to the high-level side of the sorting board and concentrated, and the floated grain flow layer flows down to the low-level side, distributing foreign grains on both the high and low sides. They are to be discharged separately. In this way, the transport of particles by mechanical rocking force is limited to the higher side of the territory for both soil and grain, and the only transport force in the lower side is the flow down due to the grain's own weight. It is inevitable that the sorting ability will be small.

The present invention allows grains that are lighter than earth and sand grains to float through the perforated wall of the sorting board by wind blowing from below, and
Since the grains floating on the inclined sorting plate are blown down in the direction of the lower side in a direction almost parallel to the plate surface, the falling speed of the grains is uniform over the entire width of the grain flow layer formed on the sorting plate. The soil grains and grains are efficiently sorted on both high and low sides of the sorting board.
It also has the advantage of being able to be separated quickly, ensuring a highly accurate sorting action, and mass producing high quality selected grains.

The present invention will be explained with reference to embodiment figures. The mounted porous wall sorting board 1 is tilted at an elevation angle β of the same side that is larger than its inclined elevation angle α.
The machine is made to reciprocate by swinging to supply mixed grains of soil and sand to any position on the sorting board 1, concentrate and concentrate the soil and sand grains in the direction of the higher territory side A, and then opens a discharge port 2 that discharges only the soil grains. In addition, a grain outlet 3 is provided at the edge of the sorting board 1 in the direction of the lower area B.
A wind turbine 4 blows the grains floating on the sorting plate 1 in the direction of the high side A, and a blower port C of the wind turbine 5 blows the grains floating on the sorting plate 1 toward the low side B in a direction substantially parallel to the plate surface. Mount it. According to the second aspect of the present invention, the wind turbine 5 is specifically a cross fan to achieve a uniform effect of sweeping air across the entire width.

In addition, the windmill 5 of the present invention may be connected to a blower port C provided at an arbitrary position by a blower pipe.

[Brief explanation of drawings]

The drawings are examples of the present invention, with FIG. 1 being a side sectional view and FIG. 1 being a plan view. 1... Porous wall sorting board, 2... Sediment grain discharge port, 3... Grain discharge port, 4... Windmill, 5
... Wind turbine, A ... High tilted side, B ...
...Low tilted side, C...Blowout.

Claims (1)

[Scope of Claims] 1. A tilted porous wall sorting board is reciprocated at an elevation angle on the same side that is larger than the tilted elevation angle, and mixed grains of earth and sand are supplied to any position on the sorting board, and the grain is tilted. A discharge port is provided to concentrate and concentrate the soil grains in the direction of the higher side and discharge only the grains, and the grains floating on the sorting plate are blown down in the direction of the lower side almost parallel to the plate surface. A stone-pulled grain sorting machine characterized by being equipped with a windmill spout. 2. The stone-pulled grain sorting machine according to claim 1, wherein the windmill is a cross fan.