JP2006231256A - Stone removing sorting apparatus of unpolished rice - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To dissolve the problem that many of stone removing sorting apparatuses for removing stones from unpolished rice have a form using a swinging shelf for carrying out swinging transportation of the unpolished rice, at a stone removing pathway pebbles are transported to a lower layer and the unpolished rice is transported to its upper layer to apply specific gravity sorting action and thereby unpolished rice blended with pebbles is transported from a terminal of the stone removing pathway to a sorting port to make perfect sorting work hard to be performed and that since transportation of pebbles from the stone removing pathway to the sorting port takes much time, it is difficult to perform stone removal and discharge by opening the shutter for a short time and when the shutter at the bottom part of the sorting port where there is more pebble layers at a relatively lower layer is opened to discharge pebbles only, the unpolished rice at the upper layer is apt to be discharged altogether with the pebbles. <P>SOLUTION: In the stone removing sorting apparatus of the unpolished rice, the sorting port 3 and a shutter 4 for opening/closing the sorting port 3 are provided at a terminal part of the stone removing pathway 2 of the swinging shelf 1 for carrying out stone removing sorting while swinging transporting the unpolished rice when the unpolished rice is supplied and the shutter 4 is opened/closed a plurality of times at the time of removing the stone. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a stone extraction and sorting apparatus that removes stones and gravel by mixing with brown rice supplied in a rice milling facility or the like, and improves the sorting performance between brown rice and stones.

A technology is provided in which a shutter is provided at the end of the stone extraction path of the swing shelf, and the brown rice and stone discharged by opening the shutter are switched to the brown rice opening and the stone extraction opening with a switching valve (for example, Patent Document 1). See).
Japanese Patent Laid-Open No. 10-146666 (page 3, FIG. 1).

  In many forms, the rock removal sorting device for removing the stone from the brown rice uses a rocking shelf for rocking and transferring the brown rice. In this form, the gravel is transferred to the lower layer in the stone removal path, and the brown rice is transferred to the upper layer. Is transported and a specific gravity sorting action is performed. For this reason, the brown rice mixed with stones is transferred from the end of the stone extraction path to the selection port, and it is difficult to perform a complete selection operation. In addition, it takes time to transfer stones from the stone extraction route to the sorting port, and it is difficult to remove this stone removal by opening the shutter for a short time. Even if you try to open only the stones by opening the shutter at the bottom at the mouth, it will easily discharge both the upper brown rice.

  According to the first aspect of the present invention, the sorting port (3) is provided at the end of the rock removal path (2) of the rocking shelf (1) that receives the supply of brown rice and rocks and moves while rocking and moving. A shutter (4) for opening and closing the mouth (3) is provided, and this shutter (4) is configured to open and close a plurality of times when removing stones, and is configured as a stone extraction device for brown rice. In the brown rice mixed with stones transferred through the stone extraction path (2) of the swing shelf (1), stones are transferred to the lower layer, and the brown rice is transferred to this upper layer part. For this reason, a part of the brown rice is partly selected by flowing back the stone extraction route (2). The brown rice discharged from the end of the stone extraction route (2) to the sorting port (3) also forms a stone layer in the lower layer. Here, after a predetermined sorting process, the shutter (4) at the bottom of the sorting port (3) is opened once, and the lower stone layer portion is mainly discharged downward and immediately closed. After this shutter (4) is closed, the subsequent brown rice and stones are discharged and collected in the sorting port (3), so that the lower stone layer is mainly discharged by opening and closing the shutter (4) after a certain period of time. Let

  According to the second aspect of the present invention, there is provided a switching valve (7) provided on the lower side of the shutter (4) of the sorting port (3) and switched between the brown rice port (5) and the stone outlet (6). It is characterized by switching so that the brown rice entrance (5) is opened after the shutter (4) is opened and closed a plurality of times at the extraction opening (6). As described above, the shutter (4) repeats opening and closing a plurality of times, and performs the stone removal of the lower layer of the sorting port (3). At this time, the switching valve (7) below the stone removes stones ( 6) It is switched to guide to the side. Then, when the shutter (4) is opened and closed several times, this switching valve (7) is switched to guide to the brown rice door (5) side, and the unpolished rice after stone removal by opening the shutter (4) Can be discharged to the brown rice entrance (5).

  According to a third aspect of the present invention, when the shutter (4) is opened, the swinging of the coarse sorter (8) that receives and sorts brown rice supplied from the swinging shelf (1) is stopped. It is a feature. The brown rice flowing down from the brown rice path of the swing shelf (1) is supplied to the coarse sorting machine (8), and the straw scraps and the like mixed in the brown rice are selected. When the shutter (4) is opened a plurality of times, the coarse selector (8) stops the swinging action for the coarse selection, and when the shutter (4) is closed, the coarse selector ( 8) The rocking is performed. When the shutter (4) is closed, the gravel is stored in the lower layer of the sorting port (3), and the brown rice layer is stored in the upper layer. By opening the shutter (4), the lower gravel Since the oscillating action of the rocking shelf (1) and the sorting port (3) when removing the stone is kept constant, the rocking resonance of the coarse sorter (8) Will not be disturbed by.

  According to the first aspect of the present invention, the time required for each opening of the shutter (4) at the sorting port (3) at the end of the stone extraction path (2) is shortened, and the lower layer accumulated at the bottom of the sorting port (3) is mainly used. It is possible to discharge the stone layer part and reduce the discharge of the brown rice layer in the upper layer part. By repeating the opening and closing of the shutter (4) a plurality of times, it is possible to cope with a large amount of stone extraction. Efficient stone removal can be performed with little loss of brown rice discharge.

  According to the second aspect of the present invention, in a state where a predetermined amount of stone-mixed brown rice is stored in the sorting port (3) and a stone layer is formed in the lower layer portion, the shutter (4) is short-time and is applied a plurality of times. Since it is intended to discharge only this stone layer part to the stone extraction opening (6) by opening, the related operation control of these shutter (4) and switching valve (7) is simple, and stone extraction selection Accurate stone removal can be performed.

  According to the third aspect of the present invention, when the stone discharged by opening the shutter (4) of the sorting port (3) is removed, the rocking of the coarse sorting machine (8) is stopped. ) Can reduce the turbulence such as diffusion mixing between the gravel layer to be discharged from the upper part and the upper brown rice layer, and can perform stone extraction with stable and high accuracy of sorting.

  Based on the drawings, a rice milling apparatus having a stone extraction and sorting device will be described. In a coin milling machine that performs rice milling by inserting a predetermined amount of brown rice and coins, the machine room 12 in the house 11 is provided with a stone extraction and sorting device 13, a rice milling device 14, etc., and a brown rice supply hopper 16 from the work room 15 is provided. The rice milling operation can be performed by supplying brown rice to the machine, supplying coins to the coin mech 18 of the operation panel 17, and the polished rice can be removed from the white rice hopper 19 by filling the bag 20. The brown rice put into the brown rice supply hopper 16 is supplied to the elevator 22 after being identified by the rice bran and brown rice discrimination sensor 21. If it is brown rice as judged by the discrimination sensor 21, it is transferred from the elevator 22 to the branching motor 23 and transferred to the stone extraction and sorting device 24 side. It is taken out to the outlet 50. The stone extraction / separation device 24 is provided with a peristaltic shelf 1 that perishes and transports brown rice mixed with stones supplied by opening the shutter 26 of the brown rice hopper 25, a sorting port 3 on the inclined upper end side of the peristaltic shelf 1, The shutter 4 that opens and closes the bottom portion, and the switching rice 7 that guides the brown rice discharged from the sorting port 3 to the brown rice port 5 or guides it to the stone outlet 6 are configured.

  The gravel that is switched to the stone extraction port 6 and discharged is discharged to a container 51 outside the machine, and the brown rice discharged to the brown rice port 5 is supplied to an elevator 27 that is transported to the rice milling device 14. A swinging protrusion is formed on the upper surface of the perforated shelf 1, and receives the unpolished rice 2 mixed with stones supplied from the hopper 25 for the peristaltic operation of the perforated shelf 1, It is possible to transfer and sort to the brown rice path 28 on the side. At the end portion of the brown rice path 28, a coarse sorter 8 configured integrally with the stone extraction sorter 13 is disposed. In the coarse selector 8, a tilting plate 29 and a motor 31 that rotates the plate 29 via a crankshaft 30 are mounted on a mounting base 32. A brown rice port 33 and a straw waste port 34 are formed on the lower side of the peristaltic plate 29 and are placed on the chutes 35 and 36 provided on the mounting base 32. The straw scraps taken out from the straw scrap chute 36 are discharged out of the machine, but the brown rice taken out from the brown rice chute 35 is supplied to the rice mill hopper 37 of the rice milling device 14 through the elevator 27.

  The rice milling device 14 receives brown rice from the rice milling hopper 37 and can perform the rice milling action. The polished white rice can be taken out to the white rice hopper 19, but this white rice is switched to the polished rice hopper 238 and reduced again to the polished rice hopper 37 via the elevator 27, so that the re-polished rice (or polished rice) action is achieved. Can be done.

  The peristaltic shelf 1 of the stone extraction / separation device 24 is provided with a blower chamber 42 for rotating the fan 41 on the lower side to blow air, and the peristaltic shelf 1 is blown to the side of the stone extraction path 2 through the slit 42. The end portions of the stone passing path 2 and the brown rice path 28 of the perforated shelf 1 are narrowed to a width-shifting form and are put on the sorting port 3 or the coarsely selected moving board 29. The sorting port 31 is provided with a front and rear horizontal shutter 4 at a position lower than the surface of the peristaltic shelf 1 at the end of the stone path 2, and the shutter 4 is opened and closed by operating the front and rear by the expansion and contraction of the cylinder 44. The When the shutter 4 is closed, the sorting port 3 is in the form of a bottomed container, in which the brown rice B mixed with stone A that is transported and discharged from the peristaltic shelf 1 can be stored. The switching valve 7 is pivoted back and forth around the valve shaft 45 between the stone outlet 6 and the brown rice outlet 5, and when it is discharged to the brown rice outlet 5, the switching valve 7 is rotated to the rear side. When the top of 6 is closed and discharged to the stone outlet 6, it is turned to the front side to close the top of the brown rice entrance 5. Such operations of the shutter 4 and the switching valve 7 are interlocked by an output from the controller 46. On the input side of the controller 46 is a stone extraction switch 47 for manually performing a stone extraction operation, or a stone extraction operation for detecting that a predetermined amount of stone A mixed with the brown rice B has accumulated in the sorting port 3 and performing a stone extraction operation. A sensor 48 and the like are provided, and a cylinder 44 that opens and closes the shutter 4 and an actuator that switches the switching valve 45 are provided on the output side.

  When the brown rice is supplied to the hopper 25 and the shutter 26 is opened, this brown rice is supplied to the center of the upper surface of the swing shelf 1. By the swing of the swing shelf 1 and the air blown from the blower chamber 42, the brown rice B mixed with the stone A is swing-transferred to the stone extraction path 2 side. At this time, the gravel A is moved to the lower layer and the brown rice B is lifted to the upper layer by the specific gravity sorting, and the stone A is transferred as it is along the stone extraction route 2, but the upper layer brown rice B passes this upper layer portion into the brown rice route 28. The stones A and the brown rice B are sorted. However, the sorting of the brown rice B in the stone extraction route 2 is not performed completely, and a small amount of the brown rice B is often mixed with the stone A and sent to the sorting port 3. Here, the brown rice mixed with stones sent out from the stone extraction path 2 to the sorting port 3 is collected when the shutter 4 is closed, and the stone A layer is accumulated in the upper layer, and the brown rice B layer is accumulated on the upper side. It becomes a state. When the storage amount is full, the cylinder 44 is activated by the detection of the stone removal sensor 48 and the shutter 4 is opened for a short period of time at the first constant instant by the timer, and the switching valve 7 closes the brown rice entrance 5. By opening the shutter 4, the lower-layer stone A is discharged to the stone outlet 6. The shutter 4 is immediately closed to block the fall of the stone A and the brown rice B discharged after the sorting port 3. Then, when a certain time by the timer elapses, the shutter 4 is opened for a second short time, the stone A layer portion accumulated in the lower layer is discharged during this time, and the shutter 4 is closed again. The number of times the shutter 4 is opened can be increased not only twice but three times or four times.

  In this way, when the stone extraction action is performed a plurality of times, the switching valve 7 closes the stone extraction port 6 and the shutter 4 is opened for a certain period of time by the timer, so that the upper layer of the selection port 3 The brown rice B collected up to is discharged and closed. Such stone extraction action can be repeated to remove gravel mixed in brown rice.

  Brown rice B mixed with straw scraps fed along the brown rice path 28 on the rocking shelf 1 is supplied to the rocking plate 29 of the adjacent coarse selection 8, and foreign matters such as straw scraps are selectively removed. . A rough selection clutch 49 is provided on the crankshaft 30 of the swinging plate 29, and swinging can be stopped regardless of the rotation of the motor 31 by disengaging the first selection clutch 49. The roughing clutch 49 is disengaged when the shutter 4 is first opened by detection of the stone removal sensor 48. In addition, the coarse selection clutch 49 is engaged simultaneously with the closing of the shutter 4 opened for the second time. In this way, when the shutter 4 of the stone extraction / selection port 3 is opened and the stone extraction operation is performed, by temporarily stopping the swinging of the coarse selection device 8, the stone extraction / selection operation is disturbed by resonance or the like. As a result, it is possible to perform stable and accurate stone extraction.

  Since the brown rice supply hopper 16 is provided with a discrimination sensor, when rice bran is supplied to the hopper 16 of the coin rice mill dedicated to brown rice, the coin rice mill is not activated. The straw supplied to the hopper 16 is returned from the branching shutter 23 to the outlet 50 on the working chamber 15 side, and clogging of the rice milling device 14 and the stone extraction and sorting device 13 due to the supply of the straw can be prevented.

  Also, in coin milling machines, additional coins are often thrown into the coin mech 18 due to misunderstandings of customers. Therefore, when it is determined that the operation is idle, the entire amount of coins used is returned, and the usage amount is notified to the effect that the operation is idle. In addition, an idle operation display and a coin ¥ 0 are printed on the data printer. As a result, it can be determined that the vehicle is idling if it is driven, and the user can be provided by returning coins and guiding the idling.

A side view of a part of the stone extraction sorting device and a block diagram of stone extraction sorting control. The whole side view. Plan layout of the rice milling facility. The rice milling route map. The inside front view of a rice milling facility. The side view of a coarse selection machine part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rocking shelf 2 Stone extraction route 3 Sorting opening 4 Shutter 5 Brown rice opening 6 Stone extraction opening 7 Switching valve 8 Coarse selection machine

Claims (3)

  A sorting port (3) and a shutter that opens and closes the sorting port (3) are provided at the end of the rock removal path (2) of the rocking shelf (1) for rock removal and sorting while rocking and receiving the supply of brown rice. 4), and the shutter (4) is opened and closed a plurality of times at the time of stone removal.   A switching valve (7) provided on the lower side of the shutter (4) of the sorting port (3) and switched between the brown rice port (5) and the stone port (6) is connected to the shutter (4) in the stone port (6). 2) The unpolished stone extraction device for brown rice according to claim 1, wherein the brown rice opening (5) is switched after opening and closing a plurality of times.   3. When the shutter (4) is opened, the swinging of the coarse sorter (8) that receives and sorts the brown rice supplied from the swinging shelf (1) is stopped. The unpolished stone extraction machine for brown rice described in 1.

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