JPS5935673B2 - grain sorting machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the improvement of a coarse sorting machine for grains, sediment, and other grains, and in particular, streamlines the sorting action for dissimilar grains in which the coarse widths are the same and differ only in length. This was developed to prevent clogging of the sorting hole and ensure smooth sorting function.

In general, particles with the same width and different lengths, such as elongated or oblong particles such as rice grains and wheat grains, are generally 1/2
It is impossible to sort human crushed particles using the normal sorting method that passes through the width of a through hole.

This is because the width and thickness of crushed grains are equal to the width and thickness of whole grains. In order to sort out these types of particles, it is natural to form an impenetrable blue flame with a bottom on the inner circumferential surface of the sorting cylinder, and then pour a mixture of particles of different lengths and short lengths into this cylinder and fit them into the blue flame near the bottom of the cylinder. As the sorting tube rotates and the injected particles rise, the angle of the green flame becomes tilted, and the long particles fall out of the blue flame earlier than the short particles and fall into the mixed grains near the bottom of the cylinder, and the short particles also fall into the mixed grains near the bottom of the cylinder. Only the particles rise while infiltrating the blue flame, and when the blue flame tilts to a certain angle, they finally fall out of the blue flame, so at that phase, all of the short particles that have penetrated the blue flame are separated from the blue flame on the cylinder wall. falling off,
It is customary for long particles to fall into an upwardly open hopper located below and be discharged outside the machine, and long particles to be discharged from an outlet near the end of the sorting tube to be sorted into individual particles.

However, in this sorting method, some of the short particles may fit inside the blue flame and become permanently stuck due to the frictional force, meaning that the sorting tube rotates and the particles fall out. Even if the particle reaches the phase where it is, the particles may get stuck in the blue flame and become clogged, making it impossible for them to escape from the blue flame, resulting in an adverse effect that the separator is no longer useful as a sorter. In other words, it can be said that blue-fire type sorting machines will remain in a state of incompleteness forever unless this fatal flaw, clogging, can be completely prevented. In the present invention, the sorting tube is formed of an elastic material, and the bottom part of the numerous blue flames provided on the inner circumferential surface of the sorting tube is made thinner than the thickness of other cylinder wall parts of the sorting tube, and the outer circumferential surface of the sorting tube is made of an appropriate amount. A roll mounted on the shaft at a position where short particles are dropped from the blue flame is pressed inward of the sorting tube, so that only the bottom of the green flame provided in the sorting tube is elastically deformed inward. The short particles stuck in the protruding blue flame are pushed out of the blue flame, so clogging never occurs. In short, the present invention solves the problem of clogging of the pot hole, which has been considered a fatal common flaw in the blue flame sorting method, which separates particles by length and depth, and for which no countermeasures have been taken. This makes it possible to completely prevent clogging of the blue flame by changing the depth of the green flame to a shallow one, removing the intruded particles from the blue flame, and allowing them to fall out.This is the first blue flame type sorter to sort particles by length. The successful completion of the project is a remarkable effect.

To explain the present invention using an example, a porous-walled sorting tube 1 made of an elastic material, such as plastic, is supported on wheels 2, 3, 4, and 5 in the form of an oblique shaft and rotated. The wheels 2, 3, 4, and 5 are in circumscribed contact with the circumferential trunk ring 6 fitted on the rim.

The roll T that presses the outer circumferential surface of the sorting tube 1 has its passive wheel 8 circumscribing the circumferential trunk ring 6 and is rotated by the drive of the sorting tube 1.
The sorting tube 1 is rotated with a belt 10 suspended between a pulley 9 provided on its outer periphery and a driving pulley. Inside the sorting cylinder 1, a socket 12 for a hopper 11 with an open upper part in a substantially V-shape is provided at a position approximately below the axis of the roll 7, and the hopper 11 is supported so that its rotation can be adjusted. The bottom of the hopper 11 is formed in an inclined shape, and a discharge port 13 is opened in the outflow side wall thereof. As shown in FIG. 3, when the outer circumferential surface P of the pot hole 15 in which the short particles 14 of the porous wall sorting tube 1 are inserted reaches the position of the roll 7, the bottom surface of the pot hole Ib, which has a thin wall cross section, 16 elastically deforms and protrudes inward, deforms the depth of the pot hole 15 to be shallower, and pushes the inserted short particles 14 out of the pot hole 15, causing them to fall out. Since even particles 14 can escape easily, the pot hole 15 is constantly cleaned, eliminating any fear of clogging, and successfully completing a particle length sorter that does not cause any clogging. The effect of being able to implement selection based on length for the first time in both name and reality is remarkable.

The short particles 14 that have fallen out of the pot hole 15 fall into the hopper 11 and are taken out of the machine from the outlet 13 provided on the outflow side wall of the hopper 11, and the long particles are placed on one side of the sorting tube 1. The particles are discharged to the outside of the machine from the provided discharge port 17, and long and short particles are sorted out. Reference numeral 18 denotes a hopper for supplying raw materials into the sorting cylinder 1.

The cylinder wall of the sorting cylinder of the present invention is of course made of a thicker layer than the bottom of the pot hole in order to maintain strength to prevent deformation of the cylindrical shape of the cylinder, but it is also made of a harder material than the bottom of the pot hole. It is also possible to do so.

Further, the shape of the porous wall pot hole is arbitrary and not particularly limited. Further, the roll may be made of any material such as elastic material or metal.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is a side sectional view, FIG. 2 is a front sectional view, and FIG. 3 is an enlarged front sectional view of the main part. 1... Porous wall sorting tube, 2, 3, 4, 5...
... Wheel, 6 ... Circumferential ring, 7 ... Roll, 8 ... Passive wheel, 9 ... Pulley, 1
0...Belt, 11...Hopper, 1
2... Socket, 13... Discharge port, 14.
...Short particle, 15...Pot hole, 16...
...Bottom, 17...Discharge port, 18...
・Hopper, P...Outer surface of pot hole.

Claims (1)

[Claims] 1. A porous-walled sorting tube with a large number of holes on its inner circumferential surface is rotatably mounted horizontally or diagonally, and an arbitrary roll is mounted on the axis to press the outer circumferential surface of the sorting tube inward. In a sorting device in which an upwardly open hopper is supported inside a sorting tube, the sorting tube is formed of an elastic material, and the wall thickness of the bottom of the pot hole is formed to be thinner than the thickness of other cylinder wall portions of the sorting tube, A grain sorting machine in which only the bottom of the sorting tube hole is elastically deformed and protruded inward by the pressure of the roll.