JPH0889895A - Grain screening machine - Google Patents

Abstract

PURPOSE: To constitute a screening machine which can easily screen grains into three sorts of large sized, middle-sized, and small-sized grains and discharge the screened grains of only large-sized grains or a mixture of the large-sized grains and the middle-sized grains. CONSTITUTION: In a grain screening machine in which the first frame 2 in which the first screening cylinder 1 having a larger screening mesh size is set and the second frame 4 in which the second screening cylinder 3 having a smaller screening mesh size are installed in parallel, and middle/small-sized grains discharged from the first screening cylinder 1 are supplied to the second screening cylinder 3 to re-screen into middle-sized grains and small-sized grains, the first hopper 5 and the second hopper 6 are installed respectively in the first frame 2 and the second frame 4, and a middle-sized grain supply change- over means is installed which supplies the middle-sized grains screened in the second screening cylinder 3 to the first hopper 5 or the second hopper 6.

Description

Detailed Description of the Invention

[0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain sorter which sorts grains such as rice and wheat into three stages of large, medium and small by grain size.

[0004]

2. Description of the Related Art As a grain sorting machine, for example, Japanese Patent Publication No. 59-
There is a vertical type grain sorting machine as shown in Japanese Patent No. 14269, which is small and has good sorting efficiency. In this vertical grain sorter, the sorting holes have a fixed size, and the sorting holes are sorted into large-sized grains and small grains or scrap grains smaller than the sorting holes.
Then, the size of the grain to be taken out as the sized grain is changed by exchanging it with a sorting cylinder having different diameters of the sorting holes.

[0003]

As described above, the conventional sorting machine requires the work of exchanging the sorting cylinder in order to change the size of the grain to be taken out as the sized grain. Therefore, in the present invention, it is possible to easily change the grain size to be extracted as sized grains, and to sort into three types of large, medium and small, and to take out only large grains as sized grains or to mix large grains and medium grains. It is an object to be able to take out grains as sized grains.

[0004]

According to the present invention, a second machine equipped with a first machine frame 2 having a first selection cylinder 1 having a large selection mesh and a second selection cylinder 3 having a small selection mesh. By providing the frame 4 side by side and supplying the medium / small grains discharged from the first sorting cylinder 1 to the second sorting cylinder 3 to re-sort into medium grains and small grains, large grains, medium grains, and small grains can be obtained. And the waste particles can be sorted into three stages, the first machine frame 2 and the second machine frame 4 are provided with the first hopper 5 and the second hopper 6, respectively, and the middle particles to be sorted by the second sorting cylinder 3 are By providing the medium grain supply switching means 7 for supplying to the one hopper 5 or the second hopper 6, each of the large grain, the medium grain and the small grain can be taken out separately, or the medium grain or larger grain and the smaller grain or the scrap grain smaller than that. It is possible to take it out separately in two types.

[0005]

[Advantageous Effects of the Invention] With the above configuration, since the grains are sorted by the two types of the first sorting cylinder 1 and the second sorting cylinder 3 having different sorting meshes, grains such as brown rice are classified into large, medium, It can be divided into three types of small, and when removing small grains and scrap grains with wheat etc., the medium grain supply switching means 7 is operated to determine that the medium grains are the first hopper 5.
If it is supplied to the first hopper 5, large and medium particles can be taken out.

Incidentally, the small particle supply switching means 8 for switching between the path A for directly discharging the small particles selected by the second selection cylinder 3 to the outside of the machine and the path B for supplying the second hopper 6 with the above-mentioned construction,
If the small grain supply switching means 8 is interlocked with the medium grain supply switching means 7 and the small grains are supplied to the second hopper 6 when the medium grains are supplied to the first sized hopper 5, large, medium and small grains can be obtained. When sorting out separately, small particles and waste particles are taken out of the machine directly from the second machine frame 4, and when large and medium particles are taken out collectively from the first hopper 5, small particles and waste particles are taken out of the second machine frame 4. Since it can be taken out from the hopper 6, post-work such as bag packing becomes easy.

Further, if the first hopper 5 and the second hopper 6 are arranged side by side on the same side surface of the first machine frame 2 and the second machine frame 4 in the above-mentioned structure, a large grain from the first hopper 5 or a large grain or a medium grain. The work of packing and taking out the bag and the work of packing and taking out the medium particles or the small particles and the scrap particles from the second hopper 6 can be performed at almost the same position, and the moving distance during the work is small and the work is easy. Further, in the above configuration, if the selection cylinder exchange opening / closing portions 9 and 10 of the first machine frame 2 and the second machine frame 4 are provided on the opposite side of the mounting side surfaces of the first hopper 5 and the second hopper 6, the first selection is performed. The replacement work of the cylinder 1 and the second selection cylinder 3 can be performed at substantially the same position.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. The inside of the first machine frame 2 that houses the first sorting cylinder 1 and the second machine frame 4 that houses the second sorting cylinder 3 is formed in a square tube shape, and is integrally fixed on the base 11 to stand upright. It is set up.
The inside of the first machine frame 2 is vertically divided by a base 12,
The first selection cylinder 1 and the first granulation cylinder 13 are vertically installed on the upper and lower sides of 2,
A first spiral shaft 14 is provided upright through the first sorting cylinder 1 and the first grain receiving cylinder 13. A first gear case 15 that rotationally drives the first selection cylinder 1 and the first spiral shaft 14 is attached to the lower side of the base 12, and is driven by the first motor 16.

A chute 1 is provided on the lower rear side of the first machine casing 2.
7 is provided so as to communicate with the chute 17 into the first grain receiving cylinder 13. Further, a lid plate 18 for opening the inside of the first machine frame 1 is provided as an opening / closing section 9 on the upper rear side of the first machine frame 1, and the lid plate 18 is opened for replacement or cleaning work of the first sorting cylinder 1. I can do it. A first hopper 5 is projectingly provided on the upper front side of the first machine casing 2, and large grains discharged from the upper part of the first sorting cylinder 1 are discharged into the first hopper 5 and stored therein.
The grain bag 20 installed on the lower scale 19 is packed in a predetermined amount. The first machine frame 2 and the second machine frame 4 are
While communicating with the chute 21, the small particles leaking from the sorting hole of the first sorting cylinder 1 are supplied into the second grain receiving cylinder 22 in the second machine frame 4.

The inside of the second machine casing 4 is divided into upper and lower parts by a base 23 in the same manner as the first machine casing 2, and the second sorting cylinder 3 and the second grain receiving cylinder 22 mounted on the base 23 are installed. A second spiral shaft 24 is erected therethrough, and the second sorting cylinder 3 is provided below the base plate 23.
And a second gear case 25 that rotationally drives the second spiral shaft 24.
Is attached and driven by the second motor 26. The upper part of the rear side of the second machine frame 4 serves as the opening / closing part 10 for the cover plate 2
7 is provided and the cover plate 27 is opened so that the second selection cylinder 3 can be replaced or cleaned. A second hopper 6 is projectingly provided on the upper front side of the second machine frame 4, and by the structure described below,
The medium-sized grains that have not been sorted by the second sorting cylinder 3 or the sorted small-sized grains are collected and packed in a predetermined amount in a grain bag 29 installed on a scale 28 installed below. ing.

Inside the second hopper 6, a guide path 30 communicating with the inside of the first hopper 5 and the discharge direction of the medium particles discharged from the second sorting cylinder 3 are defined by the guide path 30 and the second hopper 6. A medium particle discharge switching valve 31 for switching the inside is provided to configure the medium particle supply switching means 7. On the side surface of the second machine frame 4, there is provided a lifting pellet 32 for feeding the small particles or scrap particles leaking from the sorting holes of the second sorting cylinder 3, and the outlet of the lifting pellet 32 goes into the second hopper 6. The small particle supply switching means 7 is configured by branching into a path B that communicates with a path A that communicates with the outside of the machine, and providing a small particle discharge switching valve 33 at the branch portion.

The medium-grain discharge switching valve 31 and the small-grain discharge switching valve 33 are connected by a connecting rod 34, and the medium-grain discharge switching valve 31 is connected to the first hopper 5.
The small particles are supplied into the second hopper 6 when supplied inside, and the small particles are discharged outside the machine when the intermediate particles are supplied into the second hopper 6. A switching lever 35 performs this switching. As shown in FIG. 3, a partition plate 36 is inserted in the middle of the second hopper 6 to divide it into a medium grain reservoir 37 and a small grain reservoir 38, and the small grains discharged from the lifting grain tube 32. You may make it collect all. In this case, the shutter 39 provided at the outlet of the second hopper 6 slides to alternately open and close the small grain outlet 40 or the medium grain outlet 41.

With the above-mentioned structure, the relationship of the sorting degree of the first sorting cylinder 1 and the second sorting barrel 3 differs depending on the type and the quality of the grain, but the first sorting barrel 1 has only one grain. An ideal selection size of about / 3 is extracted as large grains. In the case of brown rice, the selection size of the first selection cylinder 1 is 1.80 mm and the selection size of the second selection cylinder 2 is about 1.70 mm. Becomes

[Brief description of drawings]

FIG. 1 is a side sectional development view showing an embodiment of the present invention.

FIG. 2 is a plan sectional view showing an embodiment of the present invention.

FIG. 3 is a partial side sectional view showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st selection cylinder 2 1st machine frame 3 2nd selection cylinder 4 2nd machine frame 5 1st hopper 6 2nd hopper 7 Medium particle supply switching means 8 Small particle supply switching means 9 Opening / closing part of 1st machine frame 10 2nd Opening / closing part of machine frame

Claims (4)

[Claims] 1. A first machine casing (2) containing a first sorting cylinder (1) with a large sorting mesh and a second machinery casing (2) containing a second sorting cylinder (3) with a small sorting mesh (1). 4) is provided in parallel and the medium and small grains discharged from the first sorting cylinder (1) are supplied to the second sorting cylinder (3) to re-sort into medium grains and small grains. The machine frame (2) and the second machine frame (4) are provided with a first hopper (5) and a second hopper (6), respectively, and the intermediate particles sorted by the second sorting cylinder (3) are fed to the first hopper (5). ) Or a grain sorting machine provided with a medium grain feeding switching means (7) for feeding to the second hopper (6). 2. A small particle supply switching means for switching between a path (A) for directly discharging the small particles selected by the second selection cylinder (3) to the outside of the machine and a path (B) for supplying them to the second hopper (6). 8)
The small particle supply switching means (8) is interlocked with the medium particle supply switching means (7) to supply the small particles to the second hopper (6) when supplying the intermediate particles to the first sized hopper (5). The grain sorter according to claim 1, which is adapted to be supplied. 3. The grain according to claim 1, wherein the first hopper (5) and the second hopper (6) are provided side by side on the same side surface of the first machine casing (2) and the second machine casing (3). Sorting machine. 4. The first hopper (5) and the second hopper (6) are attached to the opening / closing parts (9), (10) for exchanging the selection cylinders of the first machine casing (2) and the second machine casing (4). The grain sorter according to claim 3, which is provided on the opposite side of the side surface.