JPS6084188A - Selecting cylinder for rotary selector - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sorting tube for a rotary grain sorter, and more particularly to a sorting tube for a rotary grain sorter.

Conventionally, a rotary grain sorting machine has a rotatable sorting tube with many recesses and a catch gutter inside, and while the sorting tube is slowly rotated, a mixture of paddy and brown rice is collected from one end of the tube. supply,
As the mixture flows in the axial direction inside the sorting tube, it tries to be scooped up by the rotation of the sorting tube, but the brown rice sinks and becomes crumbs, gets stuck in the dents, and becomes even more difficult. After being lifted up to , it falls down in a large parabola. On the other hand, the paddy can also be picked up, but since it does not fit into the concave, it falls in a small parabola.

A drain is installed at the point where the brown rice falls, so the paddy and brown rice are separated.

By the way, the sorting performance of this rotary grain sorter depends largely on the size of the indentation iJ, the rotational speed of the sorting cylinder, the l+ of the mixture, the feed amount, etc. Among these factors, if the supply of the mixture at the same rotational speed decreases, the mixture will not flow stably and the brown rice stuck in the concave will cause phenomena such as dancing and scattering. 27j''', l, the sorting performance decreases.

The present invention was devised in response to this inconvenient phenomenon, and its purpose is to improve the sorting performance by adding very simple means.

Hereinafter, an embodiment shown in the accompanying drawings will be described with reference to jjQL. Figure 1 shows the cross section of the entire hull of the rice cracker; i:: L7
, the huller A has a wind selection device 13 (
,') 1. A rice huller C is placed on one side of the rice cracker, and a rotary sorter is placed side by side with this to form the whole structure.

The wind sorting device B includes a sludge rice screw conveyor 1 having a shaft that also functions as a thrower shaft, and a brown rice screw conveyor 2 that has a shaft that also functions as a thrower shaft. A brown rice screw conveyor 2 is installed at the bottom of the sliding rice sorting chamber 3, and a brown rice screw conveyor 2 is installed at the bottom of the finishing brown rice sorting chamber 4. A suction dust extractor 5 is provided at one longitudinal end of the wind sorting device B, and a suction port 6 is provided at the other end, and the sorting air flows above the fallen rice sorting chamber 3 and the brown rice sorting chamber 4. are doing.

On the machine side, there are a polished rice thrower 7 that communicates with the polished rice screw conveyor 1 and is driven by the conveyor shaft, and a finished brown rice thrower 8 that communicates with the brown rice screw conveyor 2 and is driven by the conveyor shaft. has been established.

The hulling section C incorporates a pair of dehulling rolls 9, and has a bobber 10 provided above them, so that the scraped rice screw conveyor 1 is placed below the dehulling rolls 9.

The rotary sorting machine has sorting tubes LII horizontally suspended in a box-like case 12 in two lower and two lower stages.

These sorting tubes 1. The axial direction of II is perpendicular to the axis of the dehulling roll 9 in the hulling section C.

These sorting tubes 1. A hemispherical recess 13 large enough to fit brown rice is formed over the entire inner circumference of II. The diameter of the recess 13 is suitably a hemisphere with a diameter of 5 to 6.5-1 and a depth of 3 to 4 cages. Selection Clause 1. Both ends of II are open, and there is a brown rice receiving trough 14. with a cross section shaped like a square for receiving brown rice.
17 are inserted respectively.

Separately from the brown rice receiving trough 14, a dropped rice supply conveyor 15 is inserted in parallel and suspended in the upper sorting tube I. The scraped rice supply conveyor 15 is connected to the scraped rice thrower 6 on the side of the hulling section C.
The upper end of the tank communicates with a supply tank 16, which is provided temporarily.

The lower sorting tube ■ communicates with the terminal end of the brown rice receiving trough 14 in the upper sorting tube I, and further sorts the brown rice sorted in the sorting tube I with some paddy mixed in.

The paddy and some of the brown rice that were not scooped up by the lower sorting tube ■ flow down to the suri-rachi rice sorting room 3 and join with the new suri-rachi rice. The brown rice scooped up into the brown rice receiving gutter 17 of the lower sorting tube H is flowed down from the end of the receiving gutter 17 to the finished brown rice sorting chamber 4, and is carried out of the machine by the finished brown rice thrower 8.

Here, the present invention particularly provides, as shown in FIGS. 2 and 3,
A cylinder 20 made of a flat surface with a weir 19 on the end face is provided on the discharge side 18 of the sorting cylinder I (or ■) to prevent the discharge of paddy or brown rice that has not been scooped up into the brown rice receiving trough 15 or 17. It forms a layer of () that prevents phenomena such as dancing.

Since it has the above configuration, the working conditions are as follows: If paddy is fed by hand from the bomper 10 paddy bag,
The mixture of paddy and brown rice is dehulled in the hulling section C, and is wind-selected on the way down in the wind sorting section B to remove the rice husks and second grains. The rice scraped from the supply tank 16 is transported to the supply tank 16 by the rice thrower 7, and the rice is sorted in the upper sorting tube I by the supply conveyor 15.
After being transferred to the right end in the figure, it is dropped and supplied to the inner surface of the sorting tube. Since the sorting tube I is rotating, the supplied and deposited mixture tends to be scooped up by the rotation of the sorting tube I. The brown rice tends to sink, gets stuck in the depression 13, is lifted upwards, and falls into the brown rice receiving trough 14 while drawing a large parabola. The paddy is also scooped up, but since its parabola is small, it falls again onto the inner surface of the sorting tube I and is returned to the omper 10 through the discharge port 18 of the sorting node I.

Here, since there is a weir 19 at the discharge port, the paddy and brown rice that is not scooped are placed in the sorting tube 1. The brown rice that has entered the concavity 13 due to the rotation of the sorting tube I does not sag, but flows stably and falls from the discharge port 18. Moreover, when the unweighing rate is good, most of the brown rice is scooped up into the brown rice receiving trough 15, and since the cylinder 20 has a smooth surface and has no scooping action, the sorting performance becomes more stable. In addition, when looking at the state of paddy and brown rice that cannot be scooped up in Figure 3, which is a sectional view taken along line XX in Figure 2, at the sorting tube I with the recess 13, the inner surface of the tube is in the condition shown in a. However, at the cylinder 20, which is a smooth surface, it is held longer than a in the state shown in b.
I can't give up. In other words, in the case of a and b, there is a fault section 21 in that layer, which is shown in Fig. 4. Due to the fault section 21, the material in the cylinder 20 flows backwards and returns to the sorting cylinder I having the recess 13. Subject to sorting action.

On the other hand, the brown rice with some paddy mixed in that has fallen into the brown rice receiving trough 14 of the sorting tube I is supplied from its end to the lower sorting tube H by the screw conveyor in the brown rice receiving trough 14, and is then stored in this sorting tube ■. Carefully selected.

The paddy that was not scooped up in the lower sorting tube 1■ joins with the new dropped rice as described above, and the finished brown rice that was scooped up into the brown rice receiving trough 17 falls onto the finished brown rice screw conveyor 2. The finished brown rice is carried out of the machine by the thrower 8.

In Fig. 2, reference numeral 22 is a weir on the supply side of the sorting tube (2), which prevents the dropped rice being supplied from falling. 23 shows the supporting rotation roller of the sorting cylinder I, and both the sorting cylinders I.

(2) is rotationally driven by a motor M.

In summary, the present invention has a sorting tube with a rough surface formed on its inner circumferential surface, which is rotatably suspended horizontally in a substantially horizontal manner, and inside the sorting tube, there is a sorting cylinder that engages with the rough surface. In a rotary sorting machine equipped with a receiving gutter for receiving grains, one end of the sorting cylinder is used as the supply side for mixed grains, and a cylinder body formed with a smooth surface is connected to the other end so as to apply braking to the discharged mixed grains. Since it is a sorting cylinder of a rotary sorting machine, it has the following effects.

(2) Since the 0 sorting tube is rotated approximately horizontally and the mixed grains are successively passed through, the scooping up of the sorted grains becomes steady and the sorting performance is highly efficient.

■The mixed grains gradually cool down as they move towards the discharge side.
Although the flow of the mixed grains becomes unstable, by installing a cylindrical body that brakes the discharge of the mixed grains, the layer of the flow becomes thicker, the layer becomes constant, and the coarse and coarse particles of the mixed grains are reduced. Prevents scattering from the surface and prevents deterioration of sorting performance.

(2) A fault occurs in the mixed flow lifted up by the rough surface and the smooth surface, and because of the fault, a part of the mixed flow within the smooth surface flows back into the rough surface and is subjected to the sorting action again.

Note that FIG. 5 shows another embodiment of the present invention, in which the cylinder is a truncated conical cylinder 25, and 11i119 shown in FIG. 2 is omitted.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional front view of the whole, FIG. 2 is an enlarged sectional view of the sorting tube, and FIG.
-X cross-sectional view, Figure 4 is a Y-Y cross-sectional view of Figure 3,
This figure is a diagram showing another embodiment of FIG. 2. 1, II... Sorting tube, 14.17... Genki uke b
m, 19...weir, 20... cylinder, 25...
Judgment FI LIE, i:? i. Patent applicant Seirei Kogyo Co., Ltd.

Claims (1)

[Claims] (J) A sorting cylinder with a rough surface formed on its inner circumferential surface is rotatably suspended horizontally, and brown rice is received in the sorting cylinder, which engages with the rough surface and is scooped up. In a rotary sorting machine equipped with a receiving gutter, one end of the sorting cylinder is used as the supply side for mixed grains, and a cylinder body formed with a smooth surface is connected to the other end to provide braking to the discharged mixed grains. The sorting tube of the machine.