JPS63116786A - Vertical type cereal grain selector - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is a method for sorting large grains and removing waste such as small grains or crushed grains by feeding grains such as rice or wheat from below to above in a sorting cylinder set upright. This invention relates to a vertical grain sorter that sorts grains into grains.

The vertical grain sorter has a structure in which a grain lifting body equipped with a spiral conveyor blade is housed in an upright sorting cylinder, and the grain is placed on the conveyor blade and the grain lifting body is rotated. While unloading, small particles and crushed particles leak out from the sorting hole provided in the sorting cylinder.
Take out the large grains from the top of the sorting tube. The grains are sorted into regular grains and waste grains.

While the grains are trying to degray, as the grains are sorted in the sorting cylinder of the vertical grain sorter, as they are sent upwards, waste grains leak out of the sorting cylinder, so that the whole grain is The proportion of waste grains contained in the surface decreases as it moves upward, and the amount of waste grains that break out tends to be larger in the lower part and smaller in the upper part.

The present invention aims to improve the sorting rate and effectively utilize the sorting tube by increasing the amount of waste particles leaking above the sorting tube.
The aim is to enable efficient sorting.

to solve the problem Therefore, the present invention is configured as follows.

That is, in a vertical grain sorter in which a grain lifting body 3 provided with a spiral conveyor blade 2 is fitted in a sorting tube 1 that is set upright, the area where the sorting hole 4 of the sorting tube 1 is provided is Correspondingly, a stirring action promoting mechanism is provided to promote the stirring action of the grains sent and lifted by the conveying blades 2 from the bottom to the top.

The grains that are sent up on the conveyor blades 2 by the rotation of the grain lifting body 3 are separated by the waste grains that encounter the sorting hole 4 of the sorting tube 1 due to the stirring action of the grains that accompanies the sending up. The waste grains leak out of the sorting tube 1 through the sorting hole 4, but since the proportion of waste grains contained in the whole grain is high in the lower part of the sorting tube 1, the stirring action does not work very well (even if the waste particles Many grains leak out, and the proportion of waste grains in the total grains decreases above the sorting tube 1.
Due to the stirring action promotion mechanism, there are more opportunities for waste particles to encounter the sorting hole 4, and more waste particles leak out.

As mentioned above, the agitation mechanism promotes grain agitation in the upper part of the sorting tube 1, where it is difficult for waste particles to leak out, so that the grains are stirred from the bottom to the top of the sorting tube 1. Compared to a configuration in which the stirring action is strongly applied over the entire area, the rotational load on the grain lifting body 3 is reduced, damage to the grains is less, and a short sorting tube 1 is used.
Therefore, efficient sorting action can be performed.

As shown in FIG. 5, the overall structure of the 11-through vertical grain sorter is such that the sorting tube 1 is installed upright within a vertically long rectangular cylindrical shell 6. Unsorted grains are supplied from a supply hopper 7 into the shell 6, and grains according to the sorting method are stored in a grain tank 8 protruding from the upper side of the shell 6.

Inside the shell 6, a base 9 is installed horizontally at the bottom, and this base 9
A sorting cylinder 1 has a particle receiving cylinder 10 connected to the supply hopper 7 fixed thereon, and a sorting hole 4 is provided on the particle receiving cylinder 10.
is rotatably provided, and a grain lifting body 3 for sending and lifting grains is fitted and installed vertically through these grain receiving cylinder 10 and sorting cylinder 1.

A gear box 11 is attached to the lower side of the base 9 to rotate the sorting tube 1 and the grain lifting body 3 in opposite directions, and power is transmitted by a belt 13 from a motor 12 attached to the lowest part of the shell body 6. I'm trying to drive it.

The sorting tube 1 includes, from the top to the bottom, an upper tube 15 that is covered and has a discharge port 14 in its peripheral wall, and a perforated tube 1 that has a horizontally long sorting hole 4 in an annular groove 16 that bulges outward in the peripheral wall.
7 and a bottomless lower cylinder 18 are integrally connected.

The grain frying body 3 has plate-shaped conveying blades 2 on the outer periphery of a cylindrical body 19.
It is wrapped in a substantially continuous manner so that the grain feeding action is carried out continuously, whether continuous or discontinuous.
In the part corresponding to the upper cylinder 15 and the lower cylinder 18 of the sorting cylinder 1, the upper surface of the conveyor blade 2 is made horizontal with respect to the radial direction, and in the part corresponding to the perforated cylinder 17, the conveyor blade is configured with a stirring action promoting mechanism described later. I have wing 2.

Furthermore, a jump plate 20 is provided near the upper end of the fried grain body 3,
The grains sent up on the conveyor blades 2 are thrown out from the discharge port 14 of the sorting cylinder 1 by the jumping plate 20.

Reference numeral 21 denotes a clogging prevention plate that is brought into sliding contact with the outer peripheral surface of the perforated tube 17 of the sorting tube 1, and is used to prevent grains that are stuck inside the shell 6 and clog the sorting holes 4 of the porous tube 17 as the sorting tube 1 rotates. I try to scrape it off.

On the base 9 in the shell body 6, a grain regulating light 22 provided around the bottom of the upper tube 15 of the sorting tube 1 and a waste particle receiver 23 provided around the bottom of the porous tube 17 are provided. There is.

Scraping tools 24 and 25 protruding from the sorting tube 1 go around the upper part of the grain sorting light 22 and the waste grain receiver 23, respectively, and the ejection port 14 of the sorting tube 1 is moved by the ejecting plate 20 of the grain frying body 3. The sized grains that are splashed out and accumulate on the sized grain light 22 are scraped into a grain tank 8, and the waste grains leaking from the sorting hole 4 and accumulated in a waste grain receiver 23 are scraped into a waste grain take-out chute 26.

The sorted grains accumulated in the grain container 8 are thrown into a grain bag (not shown) installed below by opening and closing the shack 28 provided at the outlet 27 as appropriate. It will become.

In the above embodiment, the clogging prevention plate 21 may be made to revolve around the sorting tube 10 without rotating the sorting tube 1.

Next, a stirring action promoting mechanism provided in a portion of the sorting cylinder 1 corresponding to the porous cylinder 17 will be explained.

In the embodiment shown in FIG. 1, the inner diameter (
D) is constant, the outer peripheral end diameter (d
) from the bottom to the top, the diameter of the perforated tube 1 is gradually decreased from the bottom to the top.
The gap (Sl) between the inner wall of
, the upper gap (S2) is larger than the lower gap (sl).

Reference numeral 5 denotes a feeding resistor that makes the dynamic frictional resistance larger than that of the metal surface in order to stir the grains.

Instead of this embodiment, the outer diameter (d) of the conveyor blade 2 may be kept constant and the inner diameter (D) of the perforated cylinder 17 may be increased from the bottom to the top, or the outer diameter (d) of the transfer blade 2 may be increased from the bottom to the top. There is also a method of increasing the inner diameter (D) of the porous tube 17 while decreasing d).

Also, the gap (S
l) and (32) may be widened stepwise instead of being widened continuously from the bottom to the top.

In this way, in the part where the gaps (31) and (S2) are wide, many grains fall from the gaps (s2) and fall back to the conveyor blade 2.
The stirring action of the grains is promoted by repeatedly sending and frying them.

In the embodiment shown in FIG. 2, the inner diameter (D) of the porous cylinder 17 and Ip
Assuming that the outer diameter (d) of the sending blade 2 is the same from the bottom to the top,
Downward inclination angle (θ1) of the upper surface of the conveyor blade 2 with respect to the radial direction,
(θ2) is set so that the lower part is smaller and the upper part is larger,
More grains fall from the gap (S) between the inner wall of the perforated tube 17 and the outer peripheral end of the conveyor blade 2 in the upper part, and the stirring action of the grains is promoted.

In the embodiment shown in FIG. 3, the stirring action of the feed resistor 5 is promoted upward by increasing the height of the feed resistor 5, which is a protrusion or the like provided on the upper surface of the conveyor N2, from the bottom to the top. I try to do that.

It should be noted that, instead of this embodiment, the distribution of the feed resistance elements 5 made of protrusions of equal size and height on the conveyor blade 2 may be made smaller in the lower part and more in the upper part (by doing so, the resistance becomes larger). good.

In the embodiment shown in FIG. 4, the number of windings of the spiral blade is one in the lower part and two or three in the upper part, so that the amount lifted by each conveyor blade 2 is reduced in the upper part to promote agitation. I try to do that.

Although the number of windings is increased, the winding pitch of the conveyor blade 2 (
By shortening P) from the bottom to the top, the time during which the grains are conveyed while being stirred may be lengthened to promote the stirring action.

Further, two or three examples of the configurations of the above embodiments may be combined.

[Brief explanation of the drawing]

FIG. 1, FIG. 2, FIG. 3, and FIG. 4 are partially enlarged front sectional views showing different embodiments, and FIG. 5 is a partially sectional front view of the whole.

Claims (1)

[Scope of Claims] [1] In a vertical grain sorting machine in which a grain lifting body 3 provided with a spiral conveyor blade 2 is housed in a sorting tube 1 which is set upright, sorting of the sorting tube 1 is performed. The conveyor blade 2 corresponds to the area where the hole 4 is provided.
A vertical grain sorter is provided with a stirring action promotion mechanism that promotes the stirring action of the grains being fed and fried from the bottom to the top. [2] The stirring action promoting mechanism is connected to the inner wall of the sorting cylinder 1 and the conveyor blade 2
2. The vertical grain sorter according to claim 1, wherein the gap (S) between the outer peripheral edge of the grain sorter and the outer circumferential edge of the grain sorter is larger in the upper part than in the lower part. [3] The vertical grain sorter according to claim 1, wherein the agitation action promoting mechanism has a configuration in which the downward slope (θ) of the conveying blades 2 in the radial direction is made stronger in the upper part than in the lower part. [4] The vertical grain sorter according to claim 1, wherein the agitation action promoting mechanism has a configuration in which the resistance action of the feed resistor 5 on the upper surface of the conveyor blade 2 is greater in the upper part than in the lower part. [5] The vertical grain sorter according to claim 1, wherein the stirring action promoting mechanism is configured such that the pitch (P) of the conveying blades 2 is shorter in the upper part than in the lower part. [6] The vertical grain sorter according to claim 1, wherein the agitation action promoting mechanism has a structure in which the number of windings of the conveyor blades 2 is increased in the upper part than in the lower part.