JP2009000629A - Grain elevating sorter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To resolve problems in a grain elevating sorting form of conveying grains through a sorting cylinder having a rotary screw and sorting out crushed grains from sorting hole of the sorting cylinder wherein the sorting efficiency can be hardly enhanced, as the falling direction of the grains is different from the discharge direction to the lateral outer peripheral direction from the sorting holes, being hard to perform smooth sorting work, easily causing clogging of the sorting holes, to thereby use the grain elevating sorter by setting it together with a main sorter in many occasions, and to improve handleability as a sorting cylinder of the smallest possible diameter and as the smallest possible sorting cylinder form. <P>SOLUTION: The grain elevating sorter comprises the rotary screw 3 conveying grains through the sorting cylinder 2 formed with the sorting holes 1, a mounting lug 21 having a plate face 4 tilted to have a receding angle E in relation to the radial direction D between pitches of the screw 3, and an elastic plate 6 with an end 5 slidingly and contactingly bendable on the inner periphery of the sorting cylinder 2 on the mounting lug 21. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cereal sorter that sorts cereal grains into sized grains and waste grains while conveying the cereals, and is intended to effectively prevent clogging of the sorting holes and improve the sorting performance.

There is known a technique (see, for example, Patent Document 1) in which a sorting cylinder is set in the vertical direction, a helix for conveying a grain is provided inside, and the grain is sorted while cerealed.
Japanese Unexamined Patent Publication No. 2000-262773 (second page, FIG. 1)

  In the grain sorting form that leaks and sorts waste grains from the sorting hole of this sorting cylinder while conveying the grain in the sorting cylinder having a rotating helix, the grain falling direction and from the sorting hole to the lateral outer circumference direction Since the leakage direction is different, the sorting operation is difficult to be performed smoothly, the sorting holes are easily clogged, and it is difficult to increase the sorting efficiency. Moreover, the cereal sorter is often installed and used together with a main sorter or the like, and it is desired to improve handling as a small-diameter sorting cylinder and a small sorting cylinder as much as possible.

  According to the first aspect of the present invention, a rotating helix 3 for conveying the grain is provided inside the sorting cylinder 2 in which the sorting hole 1 is formed, and the plate surface 4 is arranged in the radial direction D between the pitches of the helix 3. A mounting lug 21 inclined to have a receding angle E is provided, and the mounting lug 21 is provided with an elastic plate 6 whose tip 5 is slidable and bendable on the inner peripheral surface of the sorting cylinder 2. A grain sorter is used. By rotating the spiral 3 in the sorting cylinder 2, the grain supplied to the lower end portion of the sorting cylinder 2 is conveyed upward, and the waste grains are removed from the sorting hole 1 on the circumferential surface of the sorting cylinder 2 on the way. The remaining sized particles can be transported to the upper end and taken out. In the mashing action by the rotation of the spiral 3, the plate surface 4 that forms the receding angle E of the elastic plate 6 provided between the spirals 3, and the slidable contact surface portion that is slidably curved on the inner peripheral surface of the sorting cylinder 2, The grain is sandwiched between the inner peripheral surface of the sorting cylinder 2 that forms the sorting hole 1 to appropriately prevent the fall and maintain the cerealability of the grain, and the grain sorting hole. The extrusion discharge force from 1 is strongly maintained, and the waste particles are rapidly discharged from the sorting hole 1 to prevent clogging and to maintain good sorting performance.

  According to a second aspect of the present invention, the elastic plate 6 is divided at regular intervals and arranged along the pitch of the spiral 3, and the front and rear edges of the elastic plate 6 adjacent to each other are overlapped in the rotational direction. It is a cereal sorter characterized by being provided to F. The elastic plate 6 as described above is arranged in a form divided at regular intervals, but each adjacent elastic plate 6 at the time of three rotations of the spiral rotates with the front and rear end edges overlapping. The maintenance of the grain holding and conveying action by sliding contact with the inner peripheral surface of the sorting cylinder 2 formed with the sorting hole 1 as described above, and the maintenance of the extrusion discharge of waste grains, A sorting action can be performed.

  In the first aspect of the invention, since the plate surface 4 is inclined so as to have the receding angle E with respect to the radial direction D, the length of the elastic plate 6 in the radial direction D is increased in the small diameter sorting cylinder 2. It is possible to guide and hold the cereal grains between the inner peripheral surface of the sorting cylinder 2 and the plate surface 4 to the tip portion 5 of the elastic plate 6 between the rotating spirals 3. While preventing clogging by the extrusion discharge force from the sorting hole 1, it is possible to perform the cerealing and sorting well. Further, since the plate surface 4 is inclined so as to have the receding angle E, it is possible to appropriately prevent the fall of the cereal grains and to reduce the driving load of the rotating helix 3.

  The invention according to claim 2 conveys the cereal grains along the inner peripheral surface of the sorting cylinder 2 and the waste grain from the sorting hole 1 by the polymerization allowance of the rotation trajectory of the front and rear ends of each elastic plate 6. The extrusion leakage can be performed smoothly and accurately, and the cerealing and sorting performance can be improved.

  Based on the illustrated example, the cereal sorting machine 7 includes a sorting cylinder 2 that houses a rotating spiral 3 for transferring grains, and an electric motor 9 that rotates at the lower end of the sorting cylinder 7 by connecting the shaft 8 of the spiral 3; The stand 10 that supports them on the floor, the supply hopper 11 that supplies the grain to the lower end of the sorting cylinder 2, the scrap shooter 12 that takes out the grain leaked from the sorting hole 1 of the sorting cylinder 2, and this sorting It is mainly composed of a sizing shooter 13 and the like for taking out the sized particles remaining and conveyed to the upper end of the cylinder 2. Such a cereal sorter 7 causes the waste grains to leak out from the sorting hole 1 of the sorting cylinder 2 to the outer periphery while conveying the grains supplied to the supply hopper 11 upward in the sorting cylinder 2 by the rotation of the spiral 3. The sizing is leaked from the sizing shooter 13 at the upper end. For example, if the brown rice sorter 14 that receives and sorts the brown rice taken out from the rice huller is the primary sorter, the brown rice sorter 14 It is also possible to use as a secondary sorter that sorts again by receiving supply of small rice from the primary sorter to be taken out and brown rice mixed with waste rice.

  Here, the cereal sorter according to the present invention is provided with a rotating spiral 3 for conveying the grain inside a sorting cylinder 2 in which a sorting hole 1 is formed, and the plate surface 4 is radiated between the three pitches of the spiral. A mounting lug 21 that is inclined so as to have a receding angle E with respect to D is provided, and the mounting lug 21 is provided with an elastic plate 6 whose tip 5 can be slidably curved on the inner peripheral surface of the sorting cylinder 2. It shall be the structure of the characteristic cereal sorter. By rotating the spiral 3 in the sorting cylinder 2, the grain supplied to the lower end portion of the sorting cylinder 2 is conveyed upward, and the waste grains are removed from the sorting hole 1 on the circumferential surface of the sorting cylinder 2 on the way. The remaining sized particles can be transported to the upper end and taken out. In the mashing action by the rotation of the spiral 3, the plate surface 4 that forms the receding angle E of the elastic plate 6 provided between the spirals 3, and the slidable contact surface portion that is slidably curved on the inner peripheral surface of the sorting cylinder 2, The grain is sandwiched between the inner peripheral surface of the sorting cylinder 2 that forms the sorting hole 1 to appropriately prevent the fall and maintain the cerealability of the grain, and the grain sorting hole. The extrusion discharge force from 1 is strongly maintained, and the waste particles are rapidly discharged from the sorting hole 1 to prevent clogging and to maintain good sorting performance.

  The elastic plate 6 is divided at regular intervals and arranged along the pitch of the spiral 3 so that the front and rear edges of the elastic plate 6 adjacent to each other are overlapped in the rotation direction. Is a cereal sorter characterized by The elastic plate 6 as described above is arranged in a form divided at regular intervals, but each adjacent elastic plate 6 at the time of three rotations of the spiral rotates with the front and rear end edges overlapping. The maintenance of the grain holding and conveying action by sliding contact with the inner peripheral surface of the sorting cylinder 2 formed with the sorting hole 1 as described above, and the maintenance of the extrusion discharge of waste grains, A sorting action can be performed.

The upper and lower end portions of the spiral shaft 8 are rotatably supported by the upper and lower metals 15 and 16 via bearings and the like. The joining edges 17 of the semi-cylinders 2A and 2B in the form) are superposed and joined to support the upper and lower ends of the sorting cylinder 2 having a cylindrical shape inside. The joint edges 17 of the half cylinders 2A and 2B can be fastened and fixed by bolts and nuts 20 inserted into the bolt holes 25. The sorting cylinder 2 is formed with concave and convex strips 18 and 19 along the circumferential direction, and the narrow sorting holes 1 are formed in parallel along the bottom surface of the concave strip 18 on the inner circumferential surface of the sorting cylinder 2. .
The sorting cylinder 2 is not limited to the form in which the right and left split form (semi-cylindrical form) is superposed and joined, and may be a cylindrical shape or a substantially cylindrical polygonal shape.

  The spiral 3 is spirally formed at a constant pitch along the direction of the spiral axis 8, and the rotation B of the spiral 3 axis 8 conveys the grain B so as to scoop up the grain on the conveyance surface of the spiral 3. Can do. An appropriate space C is formed between the inner peripheral surface of the sorting cylinder 2 and the rotating surface of the spiral 3. The elastic plate 6 is formed in a substantially parallelogram shape, and is shorter than the pitch interval of the spiral 3 (for example, 1/2 pitch). An integral mounting lug 21 is provided along the direction of the spiral axis 8 on the side (lower side) opposite to the conveying surface (upper side) of the spiral 3, and the elastic plate 6 is superposed on the mounting lug 21 and fixed by the rivet 22. It is. The mounting lug 21 is provided on the outer periphery of the spiral shaft 8 so as to be inclined so as to have a receding angle E with respect to the radial line D. Therefore, the elastic plate 6 superposed and attached thereto is similarly inclined on the plate surface 4. Form. The upper end edge of the elastic plate 6 attached to the rotation side of the attachment lug 21 is made to approach the back surface (lower surface) side of the spiral 3, but the lower end edge is appropriately disposed between the front surface (upper surface) side of the spiral 3. A conveyance interval 23 is formed. In addition, between the elastic plates 6 arranged adjacent to each other before and after these, a rotation locus line K between the upper edge of the lower elastic plate 6 and the lower edge of the upper elastic plate 6 is slightly overlapped F. To a form having And the front-end | tip part 5 of each of these elastic board 6 is protruded to outer periphery longer than the attachment lug 21, is made to project | hang over the space | interval part C of the said spiral 3 rotation diameter outer periphery, and is slidably contacted to the inner peripheral surface of the selection cylinder 2. . The tip of the elastic plate 6 is slidably contacted with the inner peripheral surface of the sorting cylinder 2 and curved into an arcuate curved surface, widening the sliding contact area with respect to the inner peripheral surface of the sorting cylinder 2 and lightly sorting the cereal grains. It presses to the hole 1 side. It is also possible to superimpose the elastic plate 6 on the feeding surface side of the mounting lug 21 or attach it to the back surface side.

  An outer cylinder 26 is provided on the outer peripheral portion of the sorting cylinder 2 to cover it, receive the waste particles leaking from the sorting hole 1 and guide the flow down, and take out from the waste grain shooter 12 provided at the lower end of the outer cylinder 26. Can do. When the sorting cylinder 2 is configured by attaching the half cylinders 2A and 2B between the upper metal 15 and the lower metal 16, the clip ring 27 is fitted between the holes 40 formed at one end of the half cylinders 2A and 2B. In this state, the sorting cylinder 2 that is half-opened is fitted and supported on the outer periphery of the spiral 3 and the upper and lower metals 15 and 16 so that the opposing joint edges 17 of the sorting cylinder 2 are opposed to each other. After joining and superposing, bolts and nuts 20 are inserted into the respective bolt holes 25 and tightened. That is, since the semi-openable sorting cylinder 2 can be assembled around the spiral 3, the assembling configuration of the sorting cylinder 2 can be made simple, easy and safe. Further, when the half cylinders 2A and 2B are disassembled and removed from the peripheral portion of the spiral 3, since the grip ring 27 is fitted, it can be easily disassembled.

  The stand 10 raises the cereal sorter 7 on the floor. At this time, the sorting cylinder 2 can be installed at an appropriate inclination angle with respect to the floor surface, and this angle can be adjusted α. Then, the supply hopper 11 is put under the take-out port of the brown rice sorter 14. The brown rice grains including the waste grains taken out by the brown rice sorter 14 are cerealed by the rotating spiral 3, and small grains, waste grains, etc. are leaked from the sorting hole 1 along with the cereal transportation, It is taken out from the grain shooter 12. The remaining sized particles are raised in the sorting cylinder 2 and taken out from the sized particle shooter 13 at the upper end. In such cerealing and sorting action in the sorting cylinder 2, the grains that are scooped and conveyed by the rotation A of the spiral 3 are conveyed so as to be pushed up along the inner peripheral surface of the sorting cylinder 2. In the vicinity of the lower end of the sorting cylinder 2, the amount supplied from the supply hopper 11 is large and the amount of cerealing is sufficient, so that the transport interval 23 between the lower end edge of the elastic plate 6 and the transport surface of the spiral 3 is exceeded. The grains that are fed in a large amount are guided so as to be sandwiched between the elastic plate 6 and the inner peripheral surface of the sorting cylinder 2, and are moved to the inner peripheral surface of the sorting cylinder 2 by the tip 5 of the elastic plate 6. Pressed. At this time, particularly small crushed particles are fitted into the sorting hole 1 or are likely to remain in the recess 18 and are easily subjected to the pressing force of the elastic plate 6 tip 5. is there. For this reason, the waste particles are extruded and discharged from the sorting hole 1 to the outside under the pressing force of the elastic plate 6. Further, the sized particles having a large particle size are not leaked from the sorting hole 1 and are easily slid onto the conveying surface of the spiral 3 in the sorting cylinder 2, and are cerealed by the on-line conveying action by this conveying surface.

  In addition, the rotation of the spiral 3 performs the grain lifting and conveying action and the leakage and sorting action of the waste grains from the sorting hole 1. Simultaneously with these actions, the tip 5 of the elastic plate 6 is moved to the sorting cylinder. 2 is slidably contacted with the inner peripheral surface, and the waste particles located in the first part of the sorting hole are pushed outward to be cleaned so as not to be clogged. Therefore, the sorting hole 1 is always maintained in a state where sorting leakage is easily performed, and the sorting efficiency can be increased. In addition, the elastic plate 6 that is intermittently arranged with the pitch of the spiral 3 has a configuration in which the rotation regions of the front and rear end portions overlap each other, so that the tip portion 5 slides on the circumferential surface of the sorting cylinder 2. The contact area can be set over the entire length of the sorting hole 1 of the sorting cylinder 2, the clogging of the sorting hole 1 over the entire length area can be eliminated, and the sorting efficiency can be increased. It can be made small and a simple configuration.

  Further, a slit or a slit 24 having an appropriate depth is formed at the front edge of each elastic plate 6 so that the elastic plate 6 fits into the recess 18 on the inner peripheral surface of the sorting cylinder 2 or into the sorting hole 1. By making it easy to perform the sliding contact action, it is also possible to adopt a configuration that favorably performs the sorting and discharging action of the waste particles.

  As described above, the brown rice sorter 14 for the primary sorting work installed in the form of performing the secondary sorting operation by looking through the cereal sorter 7 is rotated in the cylindrical sorting cylinder and the sorting cylinder. Is arranged in the vertical direction, and the brown rice taken out from the rice huller is sorted by leaking from the sorting hole of the sorting cylinder to the outer periphery while being conveyed upward by the spiral. By having a sizing tank 30 for storing the grain brown rice and opening the lower shutter 31, it can be supplied and stored in a bag 33 supported on a bagging table 32. 34 is a bag mouth holder, and 35 is a shooter that takes out brown rice containing small sized particles leaked to the outer periphery of the sorting cylinder. The shooter 35 can be put into the supply hopper 11 of the cereal sorter 7.

A side view of a cereal sorter. Part of the enlarged view. FIG. The partial perspective view of the selection cylinder part. The perspective view which shows the structure of a selection cylinder part. The side view which shows the usage example of a cereal sorter. The side view which shows the usage example of a cereal sorter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sorting hole 2 Sorting cylinder 3 Spiral 4 Plate surface 5 Tip part 6 Elastic plate 21 Mounting lug D Radiation direction E Receding angle F Polymerization

Claims (2)

  A rotating spiral (3) for conveying the grain is provided inside the sorting cylinder (2) in which the sorting hole (1) is formed, and the plate surface (4) is arranged in the radial direction (D) between the pitches of the spiral (3). A mounting lug (21) that is inclined so as to have a receding angle (E) with respect to the mounting lug (21) is provided, and the tip end (5) can be slidably curved on the inner peripheral surface of the sorting cylinder (2). The cereal sorter characterized by providing an elastic plate (6).   The elastic plate (6) is divided at regular intervals and arranged along the pitch of the spiral (3), and the front and rear edge portions of the elastic plate (6) adjacent to each other in front and rear are superposed in the rotation direction (F). The cereal sorter according to claim 1, wherein the cereal sorter is provided.

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