JPS6326213Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a grain sorting machine for sorting and removing fine grains such as immature grains and crushed grains while frying grains such as rice.

[Prior art]

Regarding this type of grain sorting machine, please refer to Japanese Patent Application Laid-open No. 58-
It has already been disclosed in JP-A No. 14976, JP-A-58-27676, and JP-A-58-27677.
As shown in Fig. 1, these grain sorting machines include 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. The grain frying spiral body 2 and the grain frying spiral body 2 are both installed inside the outer shell body 3.

The sorting net 1 has a cylindrical shape composed of a lower tube 4, an intermediate net tube 5, and an upper tube 6, and as shown in FIG.
The holes are drilled in an orderly manner in the direction of rotation. A grain frying spiral 2 is provided inside the sorting net 1 with the same rotating shaft 8 as the sorting net 1, and the rotating shaft 8 has a helical shaft 9.
The upper and lower ends thereof protrude on the same axis, and are rotatably supported by the outer shell 3.

The grain lifting spiral body 2 has a spiral blade 1 on the outer periphery of a spiral shaft 9.
0, the spiral blade 10 acts on the supply area 11 at the part facing the lower cylinder 4, the sorting area 12 at the part facing the mesh cylinder 5, and the extraction area 13 at the part facing the upper cylinder 6. It is organized by region. Further, as shown in cross section in FIG. 3, in this grain lifting spiral body 2, the spiral blades 10 are inclined downwardly toward the outside in the radial direction. moreover,
The rotating shaft 8 at the lower end of the grain lifting spiral body 2 is connected to a drive motor 15 via a gear box 14, and the grain lifting spiral body 2 is rotated at approximately 300 rpm, and the sorting net body 1 is rotated in the forward or reverse direction at approximately 30 to 70 rpm. I'm letting you do it.

In the conventional fried grain sorting machine configured in this way,
When grains are supplied from the supply port 16, they fall into the lower cylinder 4, are raised by the supply area 11 of the spiral blades 9, and are fed and conveyed to the sorting area 12. In the sorting area 12, the supplied grains are scattered and discharged onto the screen cylinder 5 of the sorting net body 1 which rotates forward or backward. Small grains and the like pass through the mesh 7, are sieved out of the sorting net 1, and are discharged to the outside from the discharge port 17. On the other hand, the grains remaining in the sorting net 1 are gradually fried and reach the removal area 13. In the take-out area 13, the grains are fried to the top and taken out from the take-out port 18.

By the way, in the above-mentioned conventional fried grain sorting machine, the spiral blades are sloped downward in the radial direction to increase the area of the grain group in contact with the mesh tube in each pitch, but this reduces the sorting rate. In addition, there is a drawback that broken rice is likely to occur.

In other words, in conventional fried grain sorting machines, the perforation direction of the mesh of the sorting net is set to be long and thin parallel to the rotating surface, so when sorting, grains are kept in a horizontally long state (lateral state). ) to hit the mesh. However, in the above-mentioned fried grain sorting machine, since the spiral blades are inclined downward, the grains tend to become vertically elongated, and fine grains remain unsorted, resulting in poor sorting efficiency.

In addition, in the above-mentioned conventional fried grain sorting machine, since the spiral blade has a downward slope, the grains tend to fall from the gap between the peripheral edge of the spiral blade and the mesh tube, and the grains are likely to fall into the lower area of the sorting area and even into the supply area. In this region, the packing density of the grains becomes abnormally high, and friction between the grains often causes broken rice, or the rice polishing action causes the sugar layer to peel off.

[Purpose of invention]

The present invention was developed to solve the above-mentioned drawbacks, and it improves the sorting rate by holding the grains in a horizontally stable state as much as possible and bringing them into contact with the screen tube, and also prevents the grains from falling. An object of the present invention is to provide a fried grain sorting machine that prevents the occurrence of broken rice and rice polishing due to abnormally high density.

[Structure of the idea]

In order to achieve the above object, the present invention provides a cylindrical sorting net and a grain frying spiral fitted inside the sorting net so that they can rotate concentrically with each other, and In a grain sorting machine comprising an outer shell body that covers the outside, the spiral blades provided on the outer periphery of the helical shaft of the grain lifting spiral body, at least those in the sorting area, have their portions close to the helical shaft radially It is characterized in that it has an inclined part that slopes downwardly toward the outside, and that, following the inclined part, the outer part thereof is formed as an orthogonal part that is not inclined in the radial direction.

In such a configuration, by making the part of the helical blade in the sorting area that is close to the helical axis downward in the radial direction,
Combined with the centrifugal force caused by the rotation of the helical shaft, the grains can be brought into smooth contact with the mesh tube, and the sorting performance can be improved.

In addition, by making the outer part of the above-mentioned inclined part a perpendicular part that does not incline in the radial direction,
By holding the grain in a horizontal position, which is originally a stable position,
In addition to preventing omissions during sorting,
This prevents grains from falling from the edges of the spiral blades, the screen tube, and the gaps.

〔Example〕

FIG. 4 shows an embodiment of the fried grain sorting machine of the present invention.
The embodiment shown in the figure includes a cylindrical sorting net 1 and a grain lifting spiral 20 fitted inside the sorting net 1
are provided concentrically and rotatably with each other, and an outer shell 3 that covers the outside of the sorting net 1 is erected. Here, the structure of the other parts except for the grain frying spiral body 20 is the same as that of the conventional one described above,
Since it has already been explained, the same reference numerals are given and the explanation is omitted.

As shown in FIG. 4, the grain lifting spiral body 20 has a spiral blade 22 provided on the outer periphery of a spiral shaft 21. This grain lifting spiral body 20 has a part corresponding to the lower cylinder 4 of the spiral blade 22 in the feeding area 11, a part corresponding to the mesh cylinder 5 in the sorting area 12, and a part corresponding to the upper cylinder 6. However, extraction area 13
It is divided into two parts according to their functions.

In the sorting area 12 and the extraction area 13, the helical blade 22 has an inclined part 23 having a downward slope toward the outside in the radial direction at a part near the outer periphery of the helical shaft 21, and an outer part following the inclined part 23. is configured as an orthogonal portion 24 that is not inclined in the radial direction.

FIG. 5 shows the specific structure of the spiral blade 22. In the figure, the helical blade 22 is fixed to the helical shaft 21 at a mounting portion 25, and has an inclined portion 23 integrally formed from the lower end of the mounting portion 25, followed by a perpendicular portion 24 on the outside thereof. A rubber plate 26 is attached to the orthogonal portion 24, which protects the spiral blade 22 and the grain from each other and applies an appropriate frictional force to the grain. The rotational force caused by force and centrifugal force makes it easier to take the grain into a horizontal state, and the large frictional force makes it easier for grains in the horizontal state to maintain a stable posture.

Further, in this embodiment, the gap between the peripheral edge of the spiral blade 22 and the mesh tube 5 is set to a width equal to two grains arranged vertically. This prevents horizontal grains from falling, and also prevents vertical grains from falling and preventing damage to sorting in the screen tube 5.
As a result, the selection rate is further improved.

In addition, in this embodiment, the spiral blade of the supply area 11 is
It is formed using only orthogonal lines. The reason for this structure is to smoothly raise the grains supplied from the supply port 16.

In such a structure, the fried grain sorting machine of the present invention rotates the spiral shaft 21 with the drive motor 15 via the gearbox 14, and when grains are supplied from the supply port 16, the grains are transferred from the supply area 11 to the sorting area. 12, further rise to the take-out area 13, and discharged to the outside from the take-out port 18.

In the sorting area 12, the grains filled between the pitches of the spiral blades 22 are discharged toward the screen tube 5 side by the inclination of the slope portion 23 and the centrifugal force, and are sorted by the screen tube 5. At this time, since there is an orthogonal part 24, the grain in the horizontal state remains stable since it is originally in a stable state, whereas the grain in the vertical state generates a rotational moment due to centrifugal force and frictional force, and becomes in the horizontal state. .

In the mesh tube 5, the grains are sorted through the mesh 7. That is, fine particles smaller than the mesh 7 are sieved out through the mesh 7. The sieved fine particles are discharged from the discharge port 17. On the other hand, the grains that do not pass through the mesh 7 are transported to the take-out area 13 by the spiral blades 22. In this case, if the grain size is in a horizontal state, it is difficult for the grains to fall through the gap between the spiral blade 22 and the mesh tube 5, so that the packing density in the lower region will not become abnormally high.

[Effect of idea]

As explained above, the present invention improves the sorting rate by keeping the grains in a horizontally stable state as much as possible and bringing them into contact with the screen tube, and also prevents the grains from falling and preventing broken rice due to abnormally high density. It has the effect of preventing the occurrence of rice-polishing and rice-polishing effects.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view showing a conventional grain sorting machine, Fig. 2 is a perspective view showing a sorting net used in the sorting machine, and Fig. 3 is a helical structure used in the sorting machine. 4 is a vertical sectional view showing an embodiment of the fried grain sorting machine of the present invention, and FIG. 5 is a partially enlarged sectional view of the spiral blade used in the above embodiment. 1... Sorting net body, 3... Outer shell body, 5... Net tube,
7...Mesh, 11... Supply area, 12... Sorting area,
13... Removal area, 2, 20... Grain frying spiral, 9,
21... Spiral shaft, 10, 22... Spiral blade, 23
... Inclined part, 24 ... Orthogonal part, 25 ... Mounting part,
26...Rubber plate.

Claims (1)

[Claims for Utility Model Registration] A cylindrical sorting net and a grain frying spiral fitted inside the sorting net are provided concentrically and rotatably with each other. In a grain sorting machine comprising an upright outer shell that covers the grain-lifting spiral, at least the spiral blades located in the sorting area, which are provided on the outer periphery of the spiral shaft of the grain-lifting spiral, have their portions close to the spiral shaft radially outward. 1. A fried grain sorting machine characterized by having a sloped part having a downward slope in the direction, and continuing from the sloped part, an outer part of the sloped part is formed as a perpendicular part that is not sloped in the radial direction.