JPS6244787Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention supplies grains such as rice or wheat and other grains to the lower part of a cylindrical sorting cylinder in which the grains are stored. The present invention relates to a vertical granule sorting machine which separates granules into regular granules and fine granules by causing fine particles with a diameter smaller than a sorting hole provided in a sorting tube to leak out of the sorting tube while being fed up by a body.

Prior Art Vertical granule sorting machines are disclosed in Japanese Patent Application Laid-open No. 159583/1983 and Japanese Patent Application Laid-Open No. 177381/1983, which were filed and published by the applicant.
This is already known from publications such as No.

Its structure consists of a cylindrical sorting tube with a sorting hole in its peripheral wall, and a grain lifting body with spiral blades formed on the outer periphery of the cylinder.The sorting tube and the grain lifting body are rotated in opposite directions. At the same time, a clogging prevention plate is brought into sliding contact with the outer peripheral surface of the sorting tube.

Problems that the invention aims to solve In the vertical granule sorter, the granules are sorted while being sent up by the granules rotating in the opposite direction inside the rotating sorting cylinder, so the granules are not damaged. It is easy to break or break.

If the granules are broken, the quality of the granules will be reduced, and if the granules are grains, the flavor will be reduced if they are damaged.

Therefore, it is necessary to minimize the damage and cracking of the grains that occur during grain sorting, but the sorting tube is made by rolling a plate with sorting holes and joining the ends by stacking them inside and out. Since the plate is formed in a cylindrical shape, the particles may hit the inner end surface of the joined plate and cause breakage or damage.

Damage to the granules when they come into contact with the joint end surfaces of the plates often occurs when the direction of movement of the granules is toward the joint end surfaces.

Means to solve problems Therefore, the present invention is constructed as follows.

That is, a cylindrical sorting tube 2 is formed by winding a plate provided with sorting holes 1 into a cylindrical shape and joining the ends of the plates by overlapping them inside and out, and forming a spiral wing body 12 around the outer periphery of the cylindrical body. The sorting tube 2 and the granule lifting body 3 are installed upright inside the shell 4 so that the sorting tube 2 and the grain lifting body 3 can be concentrically rotated in opposite directions A and B.
In a vertical granule sorter in which a clogging prevention plate 5 is brought into sliding contact with the outer peripheral surface of the sorting tube 2, the rotation direction A of the sorting tube 2 is such that the outer joint end surface 6 of the sorting tube 2 is aligned with the inner joint end surface 7.
I decided to go ahead of the curve.

Effect of the device The granules fed downward into the cylindrical sorting tube 2 are
As the grain lifting body 3 rotates, it rotates while sliding on the spiral wing body 12 in the same direction as the rotation direction of the grain lifting body 3, and is pressed against the inner wall of the sorting tube 2 by centrifugal force, and the grains in the sorting hole 1 are Fine particles with a diameter smaller than the pore size are sorted into the sorting tube 2.
The particles leaking out and having a diameter larger than the hole diameter are sent to the upper part of the sorting cylinder 2 by the lifting body 3 and are sorted.

In addition, particles having approximately the same particle diameter as the diameter of the sorting hole 1 will clog the sorting hole 1, but as the sorting tube 2 rotates, the outer peripheral surface of the sorting tube 2 will slide against the clogging prevention plate 5. While the particles are in contact with each other, the particles clogging the sorting hole 1 are scraped off by the clogging prevention plate 5 or pushed into the sorting tube 2 to remove the clogging.

Effects of the invention Since the rotation direction A of the sorting tube 2 is the direction in which the outer joint end surface 6 of the sorting tube 2 precedes the inner joint end surface 7, the rotation direction B of the lifting body 3 is
In the rotation direction A and the opposite direction B, the grains on the grain lifter 3 do not move in the direction of jumping over the joint end surface 7 of the inner wall of the sorting cylinder 2 and directly collide with the joint end surface 7,
Damage or cracking of the granules is less likely to occur.

Also, the clogging prevention plate 5 that slides on the outer circumferential surface of the sorting tube 2 comes into contact with the joint end surface 6 and rides on it, and the sorting tube 2 rotates in the opposite direction and the clogging prevention plate 5
This creates a quiet working environment without producing any noise such as the collision sound caused when the metal jumps over the joint end surface 6 and hits the outer circumferential surface.

Embodiment Next, an embodiment of this invention will be described based on the drawings.

The vertical granule sorter has a rotatably installed sorting tube 2 and a granule lifter 3 that fits inside the sorting tube 2 and rotates in the opposite direction concentrically with the sorting tube 2. It has a structure built into the shell body 4.

The sorting tube 2 has a cylindrical shape, which is made by rolling a plate having a sorting hole 1 into a cylindrical shape and joining the ends by overlapping them inside and out. The upper blade mounting tube 9 to which the blade 8 is attached is
Lower blade tube 11 to which fine-grain blades 10 are attached
are integrally connected. This cylindrical sorting tube 2 rotates at a speed of about 70 to 80 rpm in a direction in which the outer joint end surface 6 of the plate bodies stacked and joined on the inside and outside precedes the inner joint end surface 7, that is, in the direction of arrow A in the figure. ing. The grain lifting body 3 has a spiral wing body 12 fixed to a cylindrical body having a relatively large diameter.
Then, this lifted grain body 3 moves approximately 300 degrees in the direction of arrow B in the figure.
It rotates at a speed of 400 rpm.

Inside the shell body 4, an area corresponding to the upper scraper attachment tube 9 of the cylindrical sorting tube 2 is divided into an upper particle size removal area 13,
The area corresponding to the central part where the sorting holes 1 are present is referred to as a sieving area 14, and the area corresponding to the lower scraper attachment cylinder 11 is referred to as a lower fine particle extraction area 15.
A fixed supply cylinder 16 is provided at the lower part of 5 to form a supply area 17, and an upper sieving area 13 and a sieve area 14 are provided.
is divided by an upper partition plate 18, and a lower fine grain extraction area 1
5 and the supply area 17 are separated by a lower partition plate.
In addition, 20 is a supply port for supplying granules to the supply cylinder 16, 21 is a fine grain outlet for taking out the fine grains sieved out in the sieving area 14, and 22 is a fine grain outlet for taking out the fine grains sieved out from the upper sieving area 13. This tank 22 is a tank for temporarily storing water, and a shutter 23 that opens and closes as appropriate is provided at the bottom opening of the tank 22.

24 is a motor that rotates the cylindrical sorting tube 2 and the granule lifting body 3 via a V-belt 25 and a variable speed gear box 26.

Reference numeral 5 denotes a clogging prevention plate, which is made of an elastic member such as a rubber plate, and one end of which is in sliding contact with the outer peripheral surface of the cylindrical sorting tube 2 to prevent particles from clogging the sorting hole 1 of the sorting tube 2. It has the effect of scraping off the particles and maintains the sorting function of the sorting machine in good condition. This clogging prevention plate 5 is installed approximately parallel to the axis of the sorting tube 2 by bolting it to a shell opening/closing lid 7 provided for maintenance and inspection inside the shell 4.
It is fixed with nuts etc.

In the granule sorting operation, the granules to be sorted are fed into the supply cylinder 16 from the supply port 20, and the granules supplied into the supply cylinder 16 are subjected to centrifugal force by the rotation of the granule lifter 3. The fine grains are gradually lifted upwards, and when they reach the center of the cylindrical sorting cylinder 2, the fine grains are sieved out from the sorting hole 1 to the sieving area 14, and are finely refined by the fine grain blades 10 in the lower fine grain removal area 15. The grains are discharged to the outside of the shell 4 through the grain outlet 21. The large particles remaining after sorting in this way, that is, the sized granules, reach the upper sized granule removal area 13 and are discharged into the tank 22 by the sizing blades 8, where they are packed into bags by opening the shutter 23 as appropriate. Ru.

As described above, the vertical granule sorter according to this invention has the joint end surfaces 6 and 7 that are formed when manufacturing the cylindrical sorting tube 2 for sorting granules as described above with respect to the rotational direction A, so that it is lifted up during sorting. This eliminates the possibility that particles receiving centrifugal force from the particles 3 and trying to fly out in the same direction as the rotational direction B of the lifted particles 3 collide with the inner joint end surface 7 of the sorting tube 2 and cause damage. be.

[Brief explanation of the drawing]

The figures show one embodiment of this invention, and FIG. 1 is a side view of the entire device with a portion cut away, and FIG. 2 is a sectional view taken along the line AA in FIG. 1. 1... Sorting hole, 2... Cylindrical sorting tube, 3... Granule body, 4... Shell body, 5... Clogging prevention plate, 6...
Outer joint end surface, 7...Inner joint end surface.

Claims (1)

[Scope of utility model registration request] A pellet body 3 in which a spiral wing body 12 is formed on the outer periphery of the cylinder inside a cylindrical sorting tube 2 in which a plate having a sorting hole 1 is wound into a cylindrical shape and the ends thereof are overlapped inside and outside and joined together. At the same time, these sorting tubes 2
and a lifting granule body 3 are installed upright in a shell body 4 so as to rotate concentrically in opposite directions A and B, and a clogging prevention plate 5 is brought into sliding contact with the outer peripheral surface of the sorting tube 2. In the sorting machine, the rotation direction A of the sorting tube 2 is set to the sorting tube 2.
A vertical granule sorter in which the outer joint end face 6 of the granule sorter is arranged in a direction that precedes the inner joint end face 7.