JPH054150B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotary sorting device for grains in a huller or the like.

[Problem that the invention seeks to solve]

A rotary grain sorting device used in rice hullers, etc.
A rotating sorting tube scoops up mixed rice and separates brown rice from paddy using a receiving gutter installed in the sorting tube. Only brown rice is collected in the gutter, but when adjusting the position of this gutter, adjusting it in a way that increases sorting efficiency will make it easier for paddy to get mixed in, and conversely, it should be done in the direction of preventing paddy from getting mixed in. Adjustment has contradictory effects such as a decrease in efficiency, and it is extremely difficult to select a point where these conflicting effects are neutralized.

[Means to solve the problem]

In this invention, the sorted grains are sorted by the receiving gutter 1 at the end of the sorted grain transfer in the rotary sorting cylinder 2 which scoops up the grains by rotation and sorts the scooped grains into the receiving gutter 1. The grain sorting device has a structure in which a take-out part is provided at the boundary part to take out a part of the grains at the sorting boundary part to the outside of the sorting tube (2).

[Operation and effect of the invention]

mixed rice scooped up by the rotary sorting tube 2;
Brown rice is separated into the receiving trough 1 and paddy is separated from the receiving trough 1, but during the sorting process, the ratio of remaining paddy increases as it approaches the end from the starting end of the sorting tube 2. This increases the chances of paddy getting mixed into the receiving trough (1). Therefore, by taking out a part of the sorted grains at the sorting boundary of the receiving trough 1 under these conditions to the outside of the sorting tube 2, if there is any paddy mixed in the taken out sorted grains, it is possible to immediately prevent the grains from being mixed in. On the other hand, if there is no paddy mixed in, the receiving gutter (1) can be adjusted in a direction that increases efficiency.This contradictory work can be taken out of the sorting tube (2). Accurate adjustment can be made by checking the sorted grains.

〔Example〕

In the illustrated example, a paddy receiving hopper 3 is provided at the upper left side when viewed from the front, a pair of rubber rolls 4 are provided below the hopper 3, and an inverted eight-shaped sliding shelf 5 is provided below the rubber rolls 4. On the lower side of the sliding shelf 5, there are provided a grain frying cellan 6 for transferring the mixed rice that has been rubbed down to the rotary sorting cylinder 2, a sorting rack 7 for the mixed rice, and a rice cake take-out screw 8 that takes out the grains from the machine. , the sliding shelf 5
The space between and the sorting shelf 7 is defined as a sorting air passage 9, and a suction fan 10 is provided in communication with the terminal end of the sorting air passage 9. On the other hand, on the upper right side of the front side, there is provided a rotary sorting tube 2 having a large number of semicircular small recesses on its inner surface, with the cylinder axis being horizontal. a discharge helix 11 for discharging brown rice of approximately the same length out of the sorting tube 2;
Grain partition plates 12 and 13 projecting upward in a V-shape
A receiving trough 1 of a discharge helix 11 is provided on the right side of the center of the sorting tube 2 in side view, and a supply helix 14 for supplying mixed rice to the sorting tube 2 adjacent to the discharge helix 11 side is provided on the upper left side. A receiving trough 16 for the supply helix 14 having a grain partition plate 15 projecting obliquely to one side is provided, and a dropping port 17 for mixed rice is provided at the lower side of the right end of the receiving trough 16 when viewed from the front. The left side grain partition plate 12 of the receiving trough 1 is rotatable and fixed in the left and right direction when viewed from the side about the upper end position of the outer diameter of the discharge helix 11 of the receiving trough 1 as a fulcrum. A sample take-out gutter 18 for receiving the sorted grains and taking out the sample out of the sorting cylinder 2 is fixed near the sorting boundary at the upper left end of the plate 12 when viewed from the front, and extends over the rotation range of the grain partition plate 12. A communication hole 20 is provided in the side plate 19 of the sorting chamber so that the sample can be taken out corresponding to the take-out gutter 18, and the communication hole 20 and the paddy detection sensor 22 fixed to the side plate 21 of the huller main body are connected to the sample guide tube 23. Rotate and connect. Further, on the lower side of the rotary sorting tube 2, a paddy return screw 24 for returning the remaining paddy in the sorting tube 2 to the hopper 3 and a brown rice frying screw 25 for discharging brown rice out of the machine are arranged. Set up

The mixed rice that has been slid down by the rubber rolls 4 and air-selected by the suction fan 10 is fried by the grain-frying helix 6 and is discharged to the rotary sorting cylinder 2. The mixed rice discharged to the sorting tube 2 is discharged by the mixed rice supply helix 14 to the right end of the sorting tube 2 when viewed from the front, and then transferred to the receiving trough 1.
The mixed rice is fed into the sorting tube 2 through the drop opening 17 opened at 6, and the mixed rice scooped up by the rotation of the sorting tube 2 is adjusted by the grain partition plate 12 so that only brown rice falls into the receiving gutter 1 and is collected. The grains are then discharged out of the machine by the discharge helix 11 and the hoisted grain helix 25. On the other hand, the mixed rice that could not fall into the grain partition plate 12 and fell into the grain partition plate 15 is again discharged by the supply helix 14 to the drop opening 17 of the receiving trough 16 and supplied to the sorting tube 2. . In addition, most of the paddy falls outside the grain plate partition 15 and is discharged through the inner peripheral surface of the sorting tube 2.
The rice is discharged outside and returned to the hopper 3 again by the rice-reducing helix 24. In addition, the sample taken out by the sample take-out gutter 18 is guided to the paddy detection sensor 22 by the sample guide 23, and the presence or absence of paddy contamination is quickly detected. can be adjusted accordingly.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front sectional view, FIG. 2 is a side sectional view, and FIG. 3 is a partial oblique view. In the figure, numeral 1 indicates a receiving gutter and 2 indicates a rotary sorting tube.

Claims (1)

[Claims] 1 At the end of the sorted grain transfer in the rotary sorting cylinder 2 which scoops up grains by rotation and sorts the scooped grains into the receiving gutter 1, at the sorting boundary of the sorted grains by the receiving gutter 1. , a grain sorting device provided with a take-out part for taking out a part of the grains at the sorting boundary to the outside of the sorting cylinder 2.