JP2008006321A - Foreign matter sorting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foreign matter sorting apparatus which is remarkably enhanced in sorting capacity by sufficiently agitating sorting objects at low cost, without angular adjustment of the agitation member by a worker. <P>SOLUTION: The section of a sorting cylinder 6 is composed so as to have a polygon of an octagon or decagon, and a long agitation member 31 is attached to the inside corner parts in a sorting cylinder 6. The agitation member 31 comprises: first and second agitation members 31A, 31B respectively disposed at the two inside corner parts facing each other in the polygon; and a third agitation members 31C disposed at an inside corner part deviated in the rotation direction of the sorting cylinder 6 from any one of the first and second agitation members 31A, 31B. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a foreign matter sorting apparatus that separates foreign matter such as wood chips, damaged grains attacked by pests and the like from normal grains by a rotating sorting cylinder.

  Conventionally, as this kind of foreign material sorting apparatus, a transverse feed path whose end is communicated with the lifting path is provided horizontally at the bottom of the machine casing, and a number of sorting holes are formed on the peripheral surface above the transverse feed path. One end side of the sorting cylinder is rotatably mounted at the high end, and the other end side is rotatably mounted, and among the grains supplied from the one end side of the sorting cylinder, normal straw is allowed to leak from the sorting hole and traverse route While lifting and discharging through the wood, foreign particles such as large pieces of wood, and damaged grains with large deformations (molds are attached to the entire surface or part of the straw, generally rice straw There is known a foreign material sorting device that separates and sorts cocoons according to particle size, such as potatoes (which are said to be rice cakes), which are transported to the other end of the sorting cylinder and then discharged from the bottom of the machine casing. (See Patent Document 1).

The sorting device uses a sorting cylinder having a dodecagonal cross section having a large number of sorting holes, and a stirring member is attached in the sorting cylinder to give a stirring action. The stirring member will be described in detail with reference to FIGS. A plurality of lead plates 138 are mounted on the inside of each of the plane portions of the twelve-side sorting cylinders 102, and the vicinity of the center is fixed with a knob bolt 140 so that the rotation of the lead plate 138 can be adjusted. . Thereby, it is possible to make adjustments that facilitate the conveyance of the object to be sorted to the inclined lower side or increase the stirring force in the sorting cylinder.
JP 2006-026466 A

  However, if the plurality of lead plates 138 are mounted inside the flat portions of the sorting cylinder 102 as described above, the operator needs to adjust the angle of the plurality of lead plates 138 each time. There was also a problem that the manufacturing cost was high.

In view of the above-described problems, the present invention provides a foreign matter sorting apparatus in which the sorting ability is remarkably improved by sufficiently stirring the object to be sorted without requiring the operator to adjust the angle of the stirring member. Doing this is a technical issue.

In order to solve the above-mentioned problems, the present invention has a transverse feed path whose end is communicated with the lifting path at the bottom of the machine casing, and a number of sorting holes are formed in the peripheral surface above the transverse feed path. One end of the sorting cylinder is rotatably mounted at the high end and the other end is rotatably mounted. Among the grains supplied from the one end of the sorting cylinder, normal straw is allowed to leak from the sorting hole and the transverse feed. In the foreign matter sorting device that discharges from the bottom of the machine casing, while the foreign matter having a large particle size is transported to the other end side of the sorting cylinder while being lifted and discharged through the path,
A cross-sectional shape of the sorting cylinder is a regular octagonal to regular decagonal polygon, and a long stirring member is attached to an inner corner of the sorting cylinder. The first and second stirring members respectively disposed at the two inner corners facing each other in the polygon and the first or second stirring member shifted from the first or second stirring member to the rotation direction side of the sorting cylinder. The technical means of being comprised from the 3rd stirring member arrange | positioned at an inner corner | angular part was taken.

According to the foreign matter sorting apparatus of the present invention, since the cross-sectional shape of the sorting cylinder is a regular octagonal to regular decagonal polygon, it is a cylindrical shape or a polygon having 10 or more corners. The effect of agitation can be improved over that of the product, and the removal of small grains mixed in the material to be selected can be promoted, while the angle of the inner angle is larger than that of a small number of corners such as a regular hexagon. The effect of stirring the selected item is low, and the area passing through the selection hole is widened to facilitate the leakage of the selected item.

In addition, the stirring member in the sorting cylinder includes the first and second stirring members respectively disposed at two opposing inner corners in the polygon, and the first or second stirring member from the first or second stirring member. And a third agitating member arranged at the inner corner portion shifted to the rotation direction side of the sorting cylinder, so that the agitating member is fixedly mounted in the sorting cylinder and the operator adjusts the angle of the agitating member. There is no need to perform this, and since the number of the stirring members is the first, second and third, the stirring member can be provided easily and at low cost. In the polygon, the side where the third stirring member is not present has a low effect of stirring the object to be sorted. The amount can be greatly promoted, and as a result, the sorting ability can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal side view showing an outline of the foreign matter sorting apparatus of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG.

1 and 2, the foreign matter sorting apparatus 1 includes a machine casing 2 having a bottom 3 with an inverted C shape and a rectangular shape, and a screw conveyor that is installed horizontally from one end to the other end of the center 3 of the bottom 3 of the casing 2. 4 and a lifting path consisting of a bucket conveyor 5 communicating with the terminal end side of the transverse feeding path 4 and above the transverse feeding path 4, one end side is set high and the other end side is set low. The main part is composed of a sorting cylinder 6 that is rotatably mounted (for example, inclined by 2.5 degrees from the horizontal) and has a large number of sorting holes in the peripheral surface.

Sorting holes 13 formed in the sorting cylinder 6 have an elliptical shape and are arranged in a large number. The sorting cylinder 6 has bosses 7 and 8 fitted to the support rods 9 and 10 at the axial center position, and the boss 7 is rotatably supported on the support shaft 11 on one end side. The boss 8 is rotatably supported on the rotary shaft 12. Reference numeral 14 denotes a motor, which is configured to rotate the screw conveyor 4 via a V-belt 15. Below the screw conveyor 4, a conveyor rod 3a (see FIG. 2) connected to the bottom portion 3 is provided, and the conveyor rod 3a is configured such that a part of the conveyor rod 3a can be opened. Later residues can be easily removed.

The screw shaft 4a on the other end side of the screw conveyor 4 drives the inner wheel of the bucket conveyor 5, and further protrudes outward from the machine frame 5a of the bucket conveyor 5, and a transmission pulley 16 is connected to the protruding portion. Is attached. The bucket conveyor 5 is rotatably provided with a relay shaft 17 parallel to the screw shaft 4a. A V belt 20 is wound between the transmission pulley 18 of the relay shaft 17 and the transmission pulley 16 of the screw shaft 4a. Thus, the relay shaft 17 is formed to be rotatable. Further, a V-belt 22 is wound between the transmission pulley 19 of the relay shaft 17 and the transmission pulley 21 of the rotating shaft 12 that rotates the sorting cylinder 6, and the sorting cylinder 6 is slowly moved in the direction of the arrow as shown in FIG. And low-speed rotation (for example, 71 to 72 rotations / minute).

Reference numeral 23 denotes a raw material hopper. A supply port 23a of the hopper 23 faces the opening 6a of the sorting cylinder 6. The supply port 23a is provided with a raw material charging shutter 24, and manually supplied by a knob bolt 25. 23a can be opened and closed. Reference numeral 26 denotes a belt cover on the motor 15 side, and reference numeral 27 denotes a belt cover on the bucket conveyor 5 side, which are detachably formed with a butterfly bolt or a Ulyss decorative screw, respectively.

A lid 2a is provided on the upper part of the machine casing 2 so that the sorting cylinder 6 is hidden, and a pair of wheels 28 are provided on the bucket conveyor 5 side of the machine casing 2 so as to facilitate movement. Then, at the bottom of the center of the machine casing 2 and in the vicinity of the wheel 28, foreign matter such as wood particles having a large particle diameter or rice straw having a large particle diameter are taken out from the apparatus from the lower inclined side of the sorting cylinder 6. For this purpose, a foreign matter discharge rod 29 is provided. Reference numeral 30 denotes a tank portion for storing the sorted soot provided at the upper part of the bucket conveyor 5.

FIG. 3 is a perspective view of the sorting cylinder 6 of the foreign matter sorting apparatus 1 according to the present invention, in which an enlarged view of the elliptical shape of the sorting hole 13 formed in the sorting cylinder 6 and a cross-sectional view of the sorting cylinder 6 are shown. Is. Referring to FIG. 3, the sorting cylinder 6 has a length of about 940 mm and a diameter of about 400 mm. The cross-sectional shape of the sorting cylinder 6 can be a regular octagon with one interior angle of 135 degrees or a regular decagon with one interior angle of 144 degrees, and a regular decagon is particularly preferable. That is, the effect of agitation can be enhanced more than that of a cylindrical shape or a regular polygon having more than 10 corners, and the removal of small grains mixed in the selection object can be promoted. In addition, for example, a regular decagonal shape with a smaller number of corners such as a regular hexagon has a large inner angle, so that the effect of stirring the object to be sorted is low, and the amount trapped in the sorting hole 13 Can increase the leakage of the selection. Further, the sorting hole 13 has a width W of about 3 mm and a length L of about 30 mm. As a result, in addition to normal rice cake, small rice having a smaller particle diameter, immature grains, etc. can be leaked from the sorting hole 13, but foreign matter such as wood pieces having a larger particle diameter than normal rice cake, Rice straw that has been greatly deformed to a diameter of 5 to 8 mm cannot leak.

In the sorting cylinder 6, long stirring members 31 are attached to the inner corners, and the stirring members 31 are arranged at two inner corners α and β facing each other in the polygon. The first agitating member 31A, the second agitating member 31B, and the first agitating member 31B, the first agitating member 31A or the second agitating member 31B are arranged at the inner corner γ shifted from the one of the first agitating member 31A or the second agitating member 31B toward the rotation direction of the sorting cylinder 6. 3 stirring members 31C.

That is, the agitation members 31 are fixedly attached to the inner corners of the sorting cylinder 6 so that the operator does not have to adjust the angle of the agitation members 31 and the number of the agitation members 31. Since there are three of the first stirring member 31A, the second stirring member 31B, and the third stirring member 31C, the stirring members 31 can be provided simply and at low cost. Further, in the polygon of the sorting cylinder 6, the side where the third stirring member 31 </ b> C does not exist has a low stirring effect on the sorting object, so that the amount of the sorting object captured in the sorting hole 13 increases. Therefore, it is possible to remarkably promote the amount of leakage of the selected item, and as a result, it is possible to improve the sorting ability.

FIG. 4 is an embodiment showing the number of stirring members in the sorting cylinder and their mounting positions. With reference to FIG. 4, it is confirmed that the sorting cylinder of the present invention is excellent in sorting ability.

The sorting cylinder 6 shown in FIG. 4 (a) (invention) is provided with three stirring members 27, one set of two being arranged at opposing inner corners, and the remaining one being shifted. . The sorting cylinder 6 shown in (b) of FIG. 4 (Comparative Example 1) is provided with a set of two agitation members 31 arranged at opposing inner corners. The sorting cylinder 6 shown in (c) of FIG. 4 (Comparative Example 2) is provided with two sets of four stirring members 31, which are arranged at opposing inner corners.

The sorting cylinders 6 shown in (a) to (c) were incorporated in the foreign matter sorting apparatus 1 shown in FIG. 1 and the sorting rates when the objects to be sorted were supplied from the raw material hopper 23 were compared. The sorting rate at this time is such that the larger the amount of normal soot collected in the sorting hole 13 and the smaller the amount of normal soot collected in the foreign material discharge rod 29, the better the sorting rate. The smaller the amount trapped in the hole 13 and the greater the quality of normal soot collected in the foreign matter ejector 29, the poorer the sorting rate.

Then, the supply port 23a is adjusted to a certain opening degree by the raw material charging shutter 24 (flow rate: 3,600 kg / h), and the collection cylinder 6 is rotated by 71 to 72 rotations / min. The amount of soot was measured (see Table 1).

As shown in Table 1, it has been found that the sorting rate is poor even if the number of stirring members is large or the number of stirring members is small. This is because if the number of agitating members is large, the force for transferring the object to be sorted to the inclined lower side of the sorting cylinder 6 becomes strong, and even if it is a normal soot, it is not captured in the sorting hole 13 and the other end of the sorting cylinder 6 It is considered that this is caused by being discharged to the foreign matter discharge rod 29 from the part side. Also, if the number of stirring members is small, the conveyance resistance does not occur, the stirring effect is low, the normal soot is laminar and does not leak into the sorting hole 13, and foreign matter is discharged from the other end of the sorting cylinder 6. It seems to be caused by being discharged to 樋 29. On the other hand, in the case of the present invention with three stirring members, the side where the third stirring member 31C is not present in the polygon of the sorting cylinder 6 has a low effect of stirring the sorting object. It seems that the amount of segregated material leaked can be greatly promoted because the amount captured by the water increases.

FIG. 5 is a perspective view showing the outline of the foreign matter sorting apparatus of the present invention, and the grains thrown by the buckets are thrown into the tank portion 30 above the bucket conveyor 5 shown in FIG. Deposited from portion 32. At this time, if the bucket shape of the bucket conveyor 5 is shallow, grains can be stored along the front wall portion 33 of the tank portion 30. Reference numeral 34 denotes a grain sensor installed on the tank inclined surface 35. When the grain sensor 34 senses the weight of the grain, the motor 14 is stopped, and the screw conveyor 4, the bucket conveyor 5 and the sorting cylinder 6 are all moved. It is configured to stop.

It is a vertical side view which shows the outline of the foreign material selection apparatus of this invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. In the perspective view of the sorting cylinder of the foreign matter sorting apparatus of the present invention, an enlarged view of the sorting hole formed in the sorting cylinder and a cross-sectional view of the sorting cylinder are shown. It is the Example figure which showed the number of the stirring members in a selection cylinder, and its attachment position. It is a perspective view which shows the outline of the foreign material selection apparatus of this invention. It is a sectional side view which shows the conventional foreign material selection apparatus. It is front sectional drawing same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Foreign material sorter 2 Machine casing 2a Cover part 3 Bottom part 3a Conveyor cage 4 Screw conveyor 4a Screw shaft 5 Bucket conveyor 6 Sorting cylinder 6a Opening portion 7 Boss portion 8 Boss portion 9 Support rod 10 Support rod 11 Support shaft 12 Rotating shaft 13 Sorting Hole 14 Motor 15 V belt 16 Transmission pulley 17 Relay shaft 18 Transmission pulley 19 Transmission pulley 20 V belt 21 Transmission pulley 22 V belt 23 Material hopper 23a Supply port 24 Material input shutter 25 Knob bolt 26 Belt cover 27 Belt cover 28 Wheel 29 Foreign matter discharge樋 30 Tank part 31 Stirring member 32 Input part 33 Front wall part 34 Grain sensor 35 Tank part inclined surface

Claims (1)

At the bottom of the machine casing, there is a transverse feed path whose end is in communication with the lifting path, and one end of a sorting cylinder with a large number of sorting holes in the peripheral surface above the transverse feed path is placed at a higher position. While the end side is rotatably mounted at a low position, among the grains supplied from one end side of the sorting cylinder, normal straw is allowed to leak from the sorting hole and be lifted and discharged through the transverse feed path, In the foreign matter sorting device for discharging the foreign matter having a large particle diameter from the bottom of the machine casing after being transported to the other end of the sorting cylinder,
A cross-sectional shape of the sorting cylinder is a regular octagonal to regular decagonal polygon, and a long stirring member is attached to an inner corner of the sorting cylinder. The first and second stirring members respectively disposed at two opposing inner corners in the polygon and the first or second stirring member shifted from the first or second stirring member to the rotation direction side of the sorting cylinder. A foreign matter sorting apparatus comprising: a third stirring member disposed at an inner corner portion.

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