JPS6323986Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to a grain sorting machine for rice and other grains, and more specifically, to an improvement of the grain lifting spiral that is installed upright in the center and influences the grain sorting performance. It is.

"Conventional technology" Conventionally, prior art related to grain sorting machines is as follows:
It is disclosed in JP-A-58-14976, JP-A-58-27676 and JP-A-58-27677. As shown in Fig. 1, these grain sorting machines have a sorting net 1 that is rotatably installed upright, and a sorting net 1 that is fitted into the inside of the sorting net 1 and installed concentrically so that it can rotate in reverse. A grain lifting spiral body 2 is both installed inside the outer grain body 3. Among the above-mentioned publications, the contents described in JP-A-58-27677 are as follows:
It is related to. That is, the spiral blade 5 provided on the outer periphery of the shaft 4 of the grain lifting spiral body 2 is characterized by having a downward slope radially outward, which improves the sorting performance and removes residual grains. This has the effect of making processing easier.

``Problem to be solved by the invention'' However, in the above-mentioned conventional technology, the grain-floating spiral body 2 only has its spiral blades 5 having a uniform downward slope, and in this case, the centrifugal force Since the grains are scattered by the release action of a chisel, the scattering range of grains is narrow, so a sufficient sorting effect cannot be expected. Furthermore, since the spiral blades 8 were uniformly sloped downward, there was no reinforcement for the spiral blades 8 themselves, and the phenomenon occurred in which they were bent downward due to the amount of load during sorting.

The present invention was developed by focusing on these conventional problems, and consists of a spiral blade with an inclined part, a stepped part, and an edge bent upwardly in the radial direction. Strong and has a wide scattering range.
It is an object of the present invention to provide a grain sorting machine that improves sorting performance and sorting accuracy by sorting using spiral blades.

"Means for Solving the Problems" The gist of the present invention for achieving the above purpose is to provide a cylindrical sorting net and a lift rotatably provided concentrically inside the sorting net. In a grain sorting machine comprising a grain spiral and an outer grain body standing upright covering the outside of the sorting net, the spiral blades located within the sorting area among the spiral blades provided on the outer periphery of the helical shaft of the grain lifting spiral are tilted. The present invention relates to a grain sorting machine comprising a section, a stepped section, and an edge bent radially outward at an upward slope.

“Embodiment” An embodiment of the present invention will be described below based on the drawings.

Since the structure of the grain sorter is shown in FIG. 1, the grain sorter will be further explained with reference to FIG. 1. The sorting net body 1 is the lower cylinder 1
2. It has a cylindrical shape composed of an intermediate mesh tube 13 and an upper tube 14. The sorting network 1
A grain lifting spiral body 2 is provided concentrically inside the grain lifting spiral body 2, and the upper and lower ends of a shaft 4 are rotatably supported by an outer grain body 3 that covers the grain lifting spiral body 2. The grain lifting spiral body 2 is provided with a spiral blade 5 on the outer periphery of a shaft 4.
3 is the sorting area 16, and the upper cylinder 14
The area opposite to is designated as the extraction area 17. Furthermore, the lower end shaft 26 of the grain frying spiral body 2 is connected to the gear box 1.
8 to a drive motor 19, which rotates the grain frying spiral 2 at about 300 rpm and rotates the sorting net 1 at about 30 rpm to 70 rpm in the forward or reverse direction.

Next, the action will be explained.

In the grain sorting machine configured in this manner, the grain lifting spiral body 26 according to the present invention will be described below. As shown in FIG.
It is divided into 7 areas of action. The supply area 35 divides the pitch P between the spiral bodies 26 into the sorting area 36 and the extraction area 3.
It is made smaller than the pitch P' of 7 to enhance the grain frying effect. The sorting area 36 has a downward slope and a step, and the edge 21 thereof is bent upward in the radial direction. Furthermore, the extraction area 37 is horizontal or has a downward slope. In this way, the edge of the spiral blade 25 is separated into the sorting area 3.
By bending only 6 with an upward slope in the radial direction, the grains fried and supplied to the sorting area 36 are discharged to the screen tube 1 and sieved. At this time, as shown in FIG. 3, the edge 21 scatters the grains over a wide range by the force of the monkey's mind and the action of sliding over the edge and flying upwards.
3, the small grains pass through the mesh 29 and are efficiently sieved out of the sorting mesh 1, and are discharged through the discharge port (first
It is discharged to the outside from 27) in the figure. On the other hand, the grains remaining in the sorting net 1 are gradually fried and reach the removal area 37. In the extraction area 37, the upper cylinder 14 is struck by the edge 22 of the spiral blade 25,
While being sorted, the grains are fried to the top and taken out from the takeout port (center 28 in Figure 1). The grains that are sorted, fried, and taken out are then weighed with a scale, packed in bags, and sent out.

``Effect of the invention'' Therefore, according to the invention, even the inclined part, the step part, and the edge of the spiral blade in the sorting area where the spiral blade is bent with an upward slope toward the radial outward direction. Even with this simple structure, the range in which grains are scattered is widened, and the effective area for ejection toward the sorting net and sieving is widened, which greatly improves sorting ability and improves sorting accuracy. Furthermore, since the stepped portion provides reinforcement to the spiral blade, it will not bend downward even when subjected to a load during sorting.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a grain sorter, FIG. 2 is a partial sectional view of a grain lifting spiral body showing an embodiment of the present invention, and FIG. 3 is a partially enlarged view of a spiral blade. 21... Edge, 24... Spiral shaft, 25... Spiral blade, 26... Grain frying spiral body, 36... Sorting area.

Claims (1)

[Scope of utility model registration request] a cylindrical sorting net; a grain frying spiral provided concentrically and rotatably inside the sorting net;
In a grain sorting machine comprising an outer grain body standing upright covering the outside of the sorting net, the spiral blades located within the sorting area among the spiral blades provided on the outer periphery of the helical shaft of the grain lifting spiral body are divided into inclined parts and stepped parts. and an edge bent radially outward at an upward slope.