JPS5950393B2 - Sorting machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a grand sorting machine for grains, sediment, and other grains, and particularly for sorting different grains in which the width of the grand is the same and differs only in length. It was developed to streamline the process, prevent clogging of the sorting holes, and ensure smooth sorting performance.

In general, grand sorting of particles involves sieving, in which a porous wall plate is vibrated or rocked to remove small particles from the holes in the porous wall, leaving large particles on the porous wall plate to separate them into small and large particles. Although there is another method, this sorting method that passes through the holes can only exclude small particles that are 1/2 or less of the particles.

For example, if elongated or oblate particles such as rice grains or wheat flour are crushed to 1/2 size, the width and thickness of the crushed grains are equal to the width and thickness of the whole grain, so sorting is impossible. In addition, a rice sorter using a rotating sorting tube with a large number of long slots on the outer periphery is known as Japanese Utility Model Application Publication No. 52-39775. It is possible to sort into large-diameter particles and small-diameter particles depending on the width and thickness of the particle, but it is also possible to sort into perfect particles and 1/2-sized crushed particles, which have the same particle size but different lengths. I can't. As a method for sorting particles with the same width and thickness but different lengths that cannot be sorted by the sorting method described above, a large number of pot holes are formed in the peripheral wall of the sorting tube,
Long and short mixed particles are fed into the sorting cylinder, and the mixed particles are fitted into the pot holes near the bottom of the cylinder. As the sorting tube rotates and the particles that fit in rise, the angle of the pot hole is inclined, and the long particles are faster than the short particles. It falls out of the hole in the pot and enters the mixed grains near the bottom of the tube.
Only the short particles sneak into the pot hole and rise up, and when the pot hole tilts to a certain angle, they finally fall out of the pot hole, so in that phase, all of the short particles that have sneaked into the pot hole are stuck in the pot hole on the cylindrical wall. The long particles fall into the top-open hopper below and are removed from the machine, and the long particles are discharged from the discharge port near the end of the sorting cylinder and sorted into long and short particles by the urn hole and centrifugal action. However, in this sorting method, some of the short particles fit into the pot hole while remaining in the pot hole, and due to the frictional force of the fitting, some particles are permanently prevented from escaping out of the pot hole. Even when the machine rotates to the point where the particles fall out, the holes in the pot are clogged with particles, making it impossible to escape, and the machine eventually becomes useless as a sorter.

In other words, pot-and-hole type sorters will never be able to escape from the state of being unfinished unless this fatal flaw, clogging, can be completely prevented. The present invention utilizes the structure and function of the general pot-and-hole type sorter as described above, and further forms the pot holes by a combination of holes in a porous wall and a belt surface in contact with the lower outer periphery of the sorting tube as the bottom. Therefore, when the sorting tube rotates and comes out of contact with the belt, the pot hole becomes a through hole in the porous wall, so the outer circumferential surface of the sorting tube exposed to the outside can be directly cleaned with a cleaning tool such as a rotating brush, rubber roll, or plastic. The through holes that are clogged with short particles fitted by the impeller of the material are cleaned, and in the circular stroke section, the through holes are always renovated to avoid clogging, which eliminates the conventional method of grain size sorting. The objective is to develop a sorting machine that can eliminate defects and maintain good sorting performance for a long time.

To explain the present invention with reference to embodiment figures, rings 2 and 3 are fitted to both ends of the outer periphery of a porous wall sorting tube 1, and wheels 4, 5, 6
, 7 rotatably support the sorting tube 1.

Inside the sorting tube 1, a hopper 14 with an open top for receiving short particles is supported substantially parallel to the length direction of the sorting tube 1. An arcuate stroke 9 is provided on the outer periphery of the lower part of the sorting tube 1 in contact with a belt 8 made of rubber or the like suspended from a plurality of pulleys. A rotary brush, a rubber roll, . A cleaning tool 12, such as a plastic wheel, is provided. Note that 13 is an outlet for long particles, and 15 is an outlet for short particles. With the above configuration, the long and short mixed particles are transferred from one side of the sorting tube 1 to the sorting tube 1.
When fed inside, it becomes a pot hole. The long and short mixed particles that fit into 11 gradually rise as the sorting cylinder 1 rotates, and when they come out of contact with the belt 8, the bottom of the pot hole 11 opens, and the long particles preferentially lose stability and pass through. The particles fall through the hole 10 to the bottom of the sorting tube 1 and are discharged from the long particle outlet 13 to the outside of the machine. Then, the short particles tilt upward to a higher phase and pass through hole 1.
The particles fall from the hopper 14 and are discharged outside the machine from the short particle discharge port 15, where they are sorted into long and short particles.

In the process of this sorting action, the lower part of the sorting cylinder 1 comes into contact with the belt 8, and the sorting cylinder 1 itself is driven and rotated (see Figure 3), and in the circular stroke 9 where the belt 8 contacts the lower outer periphery of the sorting cylinder 1. In this case, the through hole 10 in the porous wall is formed by the belt 8 into a pot hole 11 with a bottom surface, but when it leaves the arcuate stroke 9, it becomes a through hole 10 and is inserted into the through hole 10 by the cleaning tool 12. The clogging caused by short particles is cleaned, and the renewed pot hole 11 is always free from clogging in the circular stroke section 9.
Since the filter is formed in a straight line, the sorting action can be maintained in the correct position for a long time. In summary, the present invention uses a porous-walled sorting tube to sort out the grain length of the particles. A belt is brought into contact with the outer circumferential surface of the through-hole, and the hole is intermittently covered to form a pot hole. The alternating action created by the holes constantly cleans the through holes or pot holes to prevent clogging, so the sorting action can be maintained in the correct position for a long time, making it possible to use the pot hole sorting method, which had no countermeasures in the past. This has the remarkable effect of eliminating defects.

Note that the shapes of the through hole and pot hole of the present invention are arbitrary and not particularly limited.

[Brief explanation of the drawing]

The drawings are illustrations of embodiments of the present invention. FIG. 1 is a side sectional view, FIG. 2 is a front sectional view, and FIG. 3 is a front sectional view of main parts. 1... Sorting tube, 2...
...ring ring, 3... ring ring, 4...
Wheels, 5...Wheels, 6...Wheels,
7...Wheels, 8...Belts, 9.
...Circular stroke, 10...Through hole, 11...
...Curn hole, 12...Cleaning tool, 13...
...Long particle discharge port, 14...Hopper, 15
...Exhaust port for short particles.

Claims (1)

[Claims] 1. A hopper with an open top is supported approximately parallel to the length direction of the sorting tube inside a porous-walled sorting tube that is rotatably supported laterally or diagonally, and a plurality of pulley wheels are installed on the outer periphery of the lower part of the sorting tube. The through hole in the porous wall is formed into a pot hole having a bottom surface by providing an arcuate stroke in which the belt suspended in contact with the belt contacts, and the through hole in the porous wall is formed on the outer peripheral surface of the sorting tube outside the arcuate stroke. A sorting machine characterized by being provided with an optional cleaning tool for cleaning.