JP5229202B2 - Color sorter - Google Patents

Description

  The present invention relates to a color sorter that sorts granular materials such as grains and resin pellets by color.

  Conventionally, the color of raw materials consisting of grains such as rice and wheat, resin pellets, coffee beans, and other granular materials is classified into non-defective products and defective products by color, and foreign substances mixed in the raw materials are sorted and removed by color. Sorters are known. (See Patent Document 1).

FIG. 15 is a schematic perspective view of the color sorter described in Patent Document 1, and FIG. 16 is a side sectional view of a primary sorting unit in the color sorter described in FIG.
As shown in FIG. 15, the color sorter described in Patent Document 1 includes a plurality of primary sorting units 102A and secondary sorting units 102B arranged side by side. Here, the primary sorting unit 102A and the secondary sorting unit 102B have substantially the same configuration except for the chute surface.

As shown in FIGS. 15 and 16, the color sorter described in Patent Document 1 is provided with a front door 130 that can be turned up and down by an air cylinder 135 on an inclined wall in front of the machine frame F. It is.
Then, as shown in FIG. 16, the primary sorting unit 102A of the color sorter is arranged at an angle of about 60 degrees in order to move down the grain for primary sorting in a state of being expanded in the width direction. A chute 103A, a storage tank 104 for storing grains for primary sorting, and a vibration feeder 105 for conveying the grains for primary sorting from the storage tank 104 to the chute 103A are provided. Further, the primary sorting unit 102A includes a pair of optical detection units 106a and 106b provided across the top and bottom of the grain flow trajectory flowing down from the lower end of the chute 103A, and an ejector nozzle 107 provided further below. It is. Further, the primary sorting unit 102A is on the same inclination line as the chute 103A below the ejector nozzle 107, and receives a non-defective primary waste discharging rod 108A that receives grains that flow down without receiving a blast from the ejector nozzle 107, and It is formed in a hopper shape so as to surround the periphery of the primary good product discharge basket 108A, and is provided with a primary defective product discharge basket 109A in order to collect defective products from normal grains in response to a blast from the ejector nozzle 107.

  The optical detectors 106a and 106b are respectively formed of boxes 115a and 115b. The box 115a above the grain flow trajectory has a visible light CCD camera 116a and a near infrared light NIR camera 117. In addition, visible light sources 118a and 118a made of fluorescent lamps, a near-infrared light source 119a made of a halogen lamp and the like, and an opposing background 120a for the optical detection unit 106b are incorporated. On the other hand, the box 115b below the grain flow trajectory has a visible light CCD camera 116b, visible light sources 118b and 118b made of fluorescent lamps, a near-infrared light source 119b made of halogen lamps and the like, optical Opposing backgrounds 120b and 120c for the detection unit 106a are provided. And the window members 121a and 121b which consist of transparent glass are engage | inserted by the flow trajectory side of the grain in each box 115a, 115b. An inspection door 122 that can be opened and closed by an air cylinder is provided on the upper side of the upper box 115a.

  The color sorter described in Patent Document 1 performs maintenance of the chutes 103A and 103B, the ejector nozzle 107, and the like inside the sorter by lifting the front door 130 upward. Further, the inspection door 122 is opened with the front door 130 lifted upward, and the optical detection unit 106a is maintained.

  By the way, the raw material supplied to the color sorter as described above is a mixture of fine dust and the like. Especially when farmers use unpolished rice immediately after removing straw and removing rice husks as raw materials, the brown rice contains a lot of fine dust such as rice husk debris, shavings, straw and straw. When brown rice containing is supplied to a color sorter as a raw material, dust rises inside the sorter and adheres to and accumulates on the optical detection unit and the like, and the sorting performance of the sorter decreases.

  In order to solve this problem, a cleaning means for the window member such as transparent glass provided on the side of the flow path of the raw material in the optical detection unit, that is, on the raw material detection position side is arranged in the sorting machine and adheres to the window member at regular intervals.・ It is conceivable to secure the performance of the sorter by removing the accumulated dust, etc., but it is not possible to discharge all of the removed dust out of the sorter, and dust collected near the optical detector There was a risk that it would rise again and adhere to and accumulate on the window member, reducing the performance of the sorter.

JP 2007-283204 A

  Therefore, the present invention provides a color sorter by which fine dust or the like mixed in the raw material is removed in advance, so that dust or the like does not collect near the optical detection unit, thereby preventing the sorting performance from being deteriorated. With the goal.

In order to achieve the above object, the present invention detects an input part of an object to be sorted, a transfer means for transferring the object to be sorted put into the input part, and an object to be sorted that falls from the end of the transfer means. an optical detector for detecting at position a color sorter comprising a ejector means for selecting an object to be sorted matter on the basis of the detection result of further said optical detection means disposed below the optical detection means, wherein In addition to a discharge trough for discharging the object to be sorted below the ejector means, the suction duct provided on the side wall of the discharge trough is communicated to the outside through a suction fan.
The charging unit includes a wind power sorting unit including a separation unit that separates foreign matters mixed in the object to be sorted and a discharge unit that discharges the foreign matter separated by the separation unit, and the separation unit of the wind sorting unit is a loading hopper. while being disposed in the opening upper part of the discharge portion of the wind sorting means communicates with the outside through the suction fan and is characterized in Rukoto.

  In the present invention, it is preferable that the wind power sorting means is separable from the color sorter body.

  According to the present invention, the optical detection unit is disposed behind the detection position in the imaging direction of the imaging unit, an illuminating unit that illuminates the detection position, an imaging unit that images the object to be sorted at the detection position. It is preferable that a transparent plate is disposed on the front surface of the illumination means, and a wiper body that cleans the transparent plate is slidably provided.

  The color sorter according to the present invention is equipped with a wind power sorting means for separating and removing foreign matters mixed in the object to be sorted, so that the fine dust or the like mixed in the raw material can be removed in advance and optical detection is performed. Since dust or the like does not collect near the portion, the sorting performance of the sorter does not deteriorate.

  In the color sorter according to the present invention, the wind power sorting means includes a separation unit that separates and removes foreign matter mixed in the object to be sorted, and a discharge unit that discharges foreign matter having a small specific gravity separated and removed by the separation unit to the outside. Assuming that the separation part is arranged at the upper part of the opening of the input hopper, the raw material input to the wind power sorting means is automatically input to the input part after removing fine dust and the like. The work efficiency is improved.

  The color sorter of the present invention further comprises a discharge basket for discharging the object to be sorted below the ejector means, and a suction duct provided on the side wall of the discharge basket is communicated with the outside through a suction fan. If the discharge part of the wind power sorting means is communicated to the outside of the machine via the suction fan, a new unit for discharging the fine dust separated and removed by the separation part of the wind power sorting means to the outside of the machine. There is no need to provide a suction fan.

  In the color sorter of the present invention, if the wind sorting means is separable from the color sorter main body, the wind sorting means is used when sorting a raw material with little contamination such as fine dust. It is efficient. In addition, when the place where the color sorter is used is small, it can be flexibly handled by separating the wind sorting means, and one wind sorting means can be shared by multiple color sorters. It is possible and effective.

  In the color sorter according to the present invention, the optical detection means includes an illumination means for illuminating the detection position, an imaging means for imaging the object to be selected at the detection position, and an imaging direction of the imaging means and behind the detection position. A transparent plate is disposed on the front surface of the illumination means, and a wiper body for cleaning the transparent plate is slidably provided on the transparent plate. It is possible to remove adhering / depositing dust and the like, and in combination with removing fine dust and the like mixed in the raw material in advance, it is more effective in preventing a reduction in sorting performance of the sorting machine.

The whole perspective view from the front upper right of the color sorter | selector in embodiment of this invention. The schematic explanatory drawing of the internal structure in the color sorter | selector of FIG. FIG. 2 is an explanatory diagram of a trough of a vibrating conveyor constituting the color sorter of FIG. FIG. 3 is an enlarged explanatory view in the vicinity of an optical detection unit in FIG. 2. The perspective view which shows the state which rotated the front side optical detection part of the color sorter | selector of FIG. 1 upwards. The whole perspective view of the state which rotated the front side optical detection part upwards in FIG. In FIG. 2, explanatory drawing of the state which rotated the front side optical detection part upwards. Explanatory drawing which shows the relationship between the pin and hole for performing position alignment of both front and rear optical detection parts. In FIG. 6, explanatory drawing of the state which removes the inferior goods discharge basket from a sorter main body. In FIG. 7, explanatory drawing of the state which removes the inferior-goods discharge basket from a sorter main body. In FIG. 9, it is explanatory drawing which shows the relationship between the defective article discharge rod removed from the sorter main body, and a cover body. Explanatory drawing which looked at the inferior goods discharge rod in FIG. 11 from the other side. Explanatory drawing which shows the relationship between the angle change board in FIG. Explanatory drawing which shows the state which provided the wind power sorter in the color sorter. The schematic perspective view of the conventional color sorter. FIG. 16 is a side sectional view of a primary sorting unit in the color sorter of FIG. 15.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall perspective view from the front upper right of a color sorter according to an embodiment of the present invention. FIG. 2 is a schematic explanatory diagram of the internal structure from the right side of the color sorter and shows a primary sorting unit. FIG. 3 is an explanatory view of the trough of the vibration conveyor constituting the color sorter.

  The color sorter according to the embodiment of the present invention can sort non-defective products and defective products or foreign matters mixed in the raw materials by color using grains, resin pellets, coffee beans, and other granular materials as raw materials. is there.

  The color sorter 1 according to the embodiment of the present invention includes an elevating unit 2 for sieving raw materials located on the back side, and an optical sorting unit 3 for segregating raw materials located on the front side of the elevating unit 2. And an oscillating conveyor 4 that is located below the optical sorting unit 3 and returns the sorted raw material to the elevating unit 2.

  The raising / lowering part 2 is comprised in the state which arranged the 1st thru | or 3rd bucket conveyors 5-7 in the front view width direction of the color sorter 1, and as shown in FIG. 7 is housed compactly in the housing.

  The optical sorting unit 3 is discriminated as a defective product or a foreign substance as a result of detection by the optical detection unit 32 that detects a plurality of raw materials falling in a state of spreading in the front view width direction of the color sorter 1 and the detection by the optical detection unit 32. And an ejector 33 that removes an object by air, and a primary sorting section and a secondary sorting section are arranged side by side in the width direction. The primary sorting unit and the secondary sorting unit have substantially the same structure except for the chute surface.

  The vibration conveyor 4 is disposed below the optical sorting unit 3 and includes a trough 40 that can receive the material sorted by the optical sorting unit 3 as shown in FIG. The trough 40 is formed with a first rod 401, a second rod 402, and a third rod 403 corresponding to the positions of the raw materials discharged from the first to third discharge rods 16 to 18, which will be described later. Each of the sorted raw materials is conveyed toward the corresponding bucket conveyors 6, 7, and 5. Although a vibrating conveyor is used here, other means such as a belt conveyor may be used as long as the selected raw material can be conveyed toward the corresponding bucket conveyor.

  As shown in FIG. 2, in the color sorter 1, the raw material charged into the charging hopper 8 is granulated by the first bucket conveyor 5 and stored in the first storage tank 15, and then the first rotary valve 18. Is supplied to the first chute 24 at a constant flow rate.

  The raw material flowing down on the first chute 24 is detected by the primary sorting unit, and the raw material determined as a non-defective product as a result of the detection (hereinafter referred to as “primary good product”) is provided below the primary sorting unit. The first discharge rod 16 is dropped onto the first rod 401 of the vibrating conveyor trough 40. In addition, a raw material determined as a defective product (hereinafter referred to as “primary defective product”) is bounced by the ejector 33 and is supplied from the second discharge rod 17 provided corresponding to the lower side of the primary sorting unit to the vibrating conveyor. It falls on the second trough 402 of the trough 40.

Then, the primary non-defective product is conveyed by the vibration conveyor 4 to the second bucket conveyor 6 installed on the left side of the color sorter as viewed from the front, and is granulated, and discharged outside the machine for bagging and the like.
Further, the primary defective product is conveyed to a third bucket conveyor 7 installed on the right side of the color sorter as viewed from the front, is granulated, and is stored in a second storage tank (not shown), and then is passed through a second rotary valve. It is supplied to the second chute 25 (see FIGS. 5 and 6) at a constant flow rate.

The raw material flowing down on the second chute 25 is detected by the secondary sorting unit, and the raw material determined as a non-defective product as a result of the detection (hereinafter referred to as “secondary good product”) corresponds to the lower part of the secondary sorting unit. The third discharge rod 18 is then dropped onto the third rod 403 of the vibrating conveyor trough 40.
The secondary non-defective product is conveyed to the first bucket conveyor 5 installed in the center of the color sorter by the vibrating conveyor 4 and is granulated together with the raw material charged into the charging hopper 8, and again in the primary sorting section. Selected.
On the other hand, a raw material which is regarded as a defective product (hereinafter referred to as “secondary defective product”) is bounced by the ejector 33 and is sent from the fourth discharge rod 19 provided corresponding to the lower side of the secondary sorting unit to the machine frame. It is directly discharged out of the machine through a discharge pipe 19a provided in the cover body.

  Here, the configuration of the optical detection unit 32 of the color sorter 1 in the embodiment of the present invention will be described.

  FIG. 4 is an explanatory diagram of the internal structure of the optical detector 32 in the color sorter of the present embodiment, and FIG. 5 is a perspective view of the state where the front optical detector 32a of the color sorter is rotated. It is shown.

  As shown in FIGS. 4 and 5, the optical detection unit 32 in the present embodiment is arranged with the first chute 24 and the second chute 25 sandwiched between the front and rear optical detection units 32 a and the rear optical detection. Part 32b. Here, the rear optical detection unit 32b is fixed to the sorter body.

  As shown in FIG. 4, the front optical detection unit 32a includes a front sensor 34a including a CCD line sensor, a mirror 35a, a light source 36a including a fluorescent lamp, and a background 37a serving as background means in a cover box. It is arranged. A transparent plate 38a made of glass or the like is provided on the raw material flow path side where the light source 36a is arranged to prevent dust or the like of the raw material from entering the box of the cover, and the background is placed inside the transparent plate 38a. 37a is attached. Here, the background 37a is disposed to face the visual field center axis (optical axis) of the rear sensor 34b in the rear optical detection unit 32b. The light source 36a is shorter than the combined width of the first chute 24 and the second chute 25, and is disposed inside the outer ends of the chutes 24 and 25.

  As shown in FIG. 5, the front optical detection unit 32 a is provided with a handle 43 on the lower side outside the front face of the cover, and with a patch ending metal fitting 442 at the lower end thereof. As shown in FIGS. 1 and 6, the patching metal fitting 442 is locked by a patching lock body 441 attached to the sorting machine body side below the front optical detection unit 32a. .

On the other hand, the rear optical detection unit 32b is similarly provided with a rear sensor 34b composed of a CCD line sensor, a mirror 35b, a light source 36b composed of a fluorescent lamp, and a background 37b as background means in the cover box. It will be. A transparent plate 38b made of glass or the like is provided on the raw material flow path side where the light source 36b is disposed in order to prevent dust and the like of the raw material from entering the box of the cover, and the background is placed inside the transparent plate 38b. 37b is attached. Here, the background 37b is disposed opposite to the visual field center axis (optical axis) of the front sensor 34a in the front optical detection unit 32a. Further, the light source 36b of the rear optical detection unit 32b is also used with a length shorter than the combined width of the first chute 24 and the second chute 25, and is arranged on the inner side of the outer ends of the chutes 24, 25. Has been.
Yes.

  As shown in FIG. 5, the chute 24 is formed on the inner surfaces of both side walls of both the cover where the light source 36a is disposed in the front optical detection unit 32a and where the light source 36b is disposed in the rear optical detection unit 32b. , 25 are provided with reflecting plates 51a, 51b made of mirrors or the like, respectively, in order to ensure the light quantity at the outer end portions of the mirrors. The reflecting plates 51a and 51b may be any members that can secure the light amount at the outer ends of the chutes, and other members having a mirror finish can be used in addition to the mirrors.

  As shown in FIG. 4, the optical detection units 32a and 32b in the present embodiment illuminate the raw material falling from the lower ends of the chutes 24 and 25 with the light sources 36a and 36b, and the raw material passing through the detection position with the mirror 35a and Images are taken by the sensors 34a and 34b via 35b. At that time, the light quantity at the outer ends of the chutes 24 and 25 can be secured by the reflecting plates 51a and 51b attached to the inner surfaces of both side walls of both covers located on the side of the detection position.

  As shown in FIG. 5, the rear optical detection unit 32b includes transparent plate wiping wipers 52a and 52b for cleaning the transparent plates 38a and 38b of both optical detection units 32a and 32b, and both optical detection units 32a and 32b. A rectangular cleaning wiper 53 in which reflecting plate wiping wipers 52c and 52c for cleaning the reflecting plates 51a and 51b attached to the inner surfaces of both side walls of the cover 32b are integrated. The cleaning wiper 53 slides up and down in the cover by driving means such as an air cylinder, and wipes and cleans the transparent plates 38a and 38b and the reflecting plates 51a and 51b.

  Both optical detectors 32a and 32b in the present embodiment can wipe and clean dust and the like adhering to and depositing on the transparent plates 38a and 38b and the reflecting plates 51a and 51b by the cleaning wiper 53, and sorting by reducing the amount of light. A reduction in accuracy can be prevented.

  In the present embodiment, the front optical detection unit 32a and the rear optical detection unit 32b are connected to each other via a pair of left and right hinges 41 at the upper part of the cover. Therefore, as shown in FIG. 5, the operator holds the handle 43 provided on the cover of the front optical detection unit 32a, removes the patch lock 44 (see FIG. 1), and the front optical detection unit. By rotating 32a upward, it is possible to open a space where the raw material formed between the optical detection units 32a and 32b flows down and to expose the inside. FIG. 6 is an overall perspective view of the color sorter of the present embodiment with the front optical detection unit 32a rotated upward, and FIG. 7 is a schematic explanatory diagram of the internal structure from the right side of the color sorter. In addition, each of the drawings illustrates a state in which the front optical detection unit 32a is rotated upward.

  For example, a gas spring 45 is disposed between the front optical detection unit 32 a and the rear optical detection unit 32 b, and the front optical detection unit 32 a rotated upward is opened by the gas spring 45. It is configured to be maintained. If the front optical detection unit 32a is supported at the open position by the gas spring, the front optical detection unit 32a will not be closed without permission, so that the operator can safely perform a cleaning operation or the like.

  In addition, a shock absorber 46 is provided below the surface of the rear optical detection unit 32b facing the front optical detection unit 32a, and the front optical detection unit 32a is rotated downward to close the space. It is configured to reduce the impact.

  Then, as described above, the front optical detection unit 32a locks the patchon lock main body 441 provided on the sorter main body side to the patchon stop fitting 442 provided on the lower end portion on the outer front side of the cover. It is comprised so that it can fix to the position which closes the space which flows down. Therefore, the front optical detection unit 32a is kept closed by the patch lock 44 and does not open without permission, so that the operator can perform a sorting operation and the like safely.

At the four corners of the facing surfaces of the front optical detection unit 32a and the rear optical detection unit 32b, holes are formed on one side and pins are inserted into the other. FIG. 8 shows a case where holes 47 and 48 are formed on the front optical detection unit 32a side, and pins 49 and 49 are formed on the rear optical detection unit 32b side.
As shown in FIG. 8, the hole formed on the side of the front optical detection unit 32a is a long hole 47 on the side close to the hinge 41, and both optical detection units are rotated by rotating the front side optical detection unit 32a downward. When closing the space between 32a and 32b, the pin 49 formed on the side close to the hinge 41 of the rear optical detection unit 32b can be engaged with the elongated hole 47 smoothly. Therefore, the front optical detection unit 32a can be accurately returned to the position before being rotated upward by the engagement of the pins 49 and 49 and the holes 47 and 48, and the visual field central axis (light Advanced technology is not required to align the axis.
Needless to say, a pin may be formed on the front optical detection unit 32a and a hole may be formed on the rear optical detection unit 32b.

  The optical detection unit 32 in the embodiment of the present invention rotates the lower part of the front optical detection unit 32a upward to easily open the space where the raw material formed between the rear optical detection unit 32b flows down. Since the inside can be exposed, dust or the like adhering to and depositing on the chutes 24 and 25, the optical detection units 32a and 32b, and the like can be easily removed. Further, since the front optical detection unit 32a is rotated upward, dust or the like adhering to and accumulating in the space can be dropped to the open side.

  Further, the front optical detection unit 32a includes a light source 32a that illuminates the raw material at the detection position, a front sensor 34a that images the raw material that passes through the detection position, and an imaging direction of the rear sensor 34b of the rear optical detection unit 32b, That is, since the background located on the visual field center axis (optical axis) of the rear sensor 34b and behind the detection position is arranged in the box of the cover, the front optical detection unit 32a is compact. In addition, it is possible to facilitate handling when rotating upward and to reduce the size of the color sorter.

  Next, the discharge basket disposed below the optical detection unit 32 in the color sorter 1 according to the embodiment of the present invention will be described in detail.

FIG. 9 is an explanatory diagram of a state in which the front optical detection unit 32a is rotated upward in the color sorter of the present embodiment, and a defective product discharge basket is removed from the sorter body. . FIG. 10 is a schematic explanatory view of the internal structure from the right side of the color sorter, in a state in which the defective product discharge basket is removed from the sorter body with the front optical detection unit 32a rotated upward. An explanatory view is shown.
FIG. 11 shows an explanatory diagram of the relationship between the defective product discharge rod removed from the sorter main body and the cover body. FIG. 12 is an explanatory view of the defective product discharge rod in FIG. 11 as viewed from the opposite side.

  In the present embodiment, further below the optical detection unit 32, the discharge rods 16 to 19 that receive the raw materials sorted in each sorting unit, that is, the first discharge rod 16 that receives the primary non-defective product, and the second that receives the primary defective product. As described above, the discharge rod 17, the third discharge rod 18 for receiving secondary good products, and the fourth discharge rod 19 for receiving secondary defective products are provided. Each of these discharge baskets is arranged in the sorting machine in a state of being covered with a cover body 72 constituting a part of the machine frame, for example, as shown in FIGS.

  The second discharge rod 17 and the fourth discharge rod 19 among the discharge rods are formed by partitioning the defective product discharge rod 80 with a partition wall 85, as shown in FIGS. As shown in FIG. 11, the defective product discharge rod 80 is fixed to the inner surface of the front wall portion of the cover body 72 by a plurality of bolts 74. As shown in FIGS. 9 and 11, the cover body 72 is fixed to the color sorter main body by a plurality of urea decorative screws 73 on both side walls 72a and 72b. Is configured to be removable from the main body of the sorter in a state integrated with the cover body 72.

  Also, as shown in FIGS. 11 and 12, suction ducts 76 and 77 are provided on the side walls of the second discharge rod 17 and the fourth discharge rod 19, respectively, for example, via a suction fan 71 shown in FIG. The exhaust pipe 79 shown in FIG. 9 communicates with the outside of the apparatus, and is configured to suck and discharge dust and the like that have risen by the ejector means 33 and the like.

  Further, an angle changing plate 75 shown in FIG. 11 is arranged between the first discharge rod 16 and the second discharge rod 17 and between the third discharge rod 18 and the fourth discharge rod 19 shown in FIG. By changing the inclination of the angle changing plate 75, it is possible to finely adjust the discharge ratio between the non-defective product and the defective product sorted by each sorting unit, that is, the sorting rate.

  FIG. 13 is an explanatory diagram showing the relationship between the angle changing plate 75 and the defective product discharge rod 80. As shown in FIG. 13, the angle changing plate 75 includes a first angle changing plate 75 a and a second angle changing plate 75 b, and is pivotally connected to each other by a pivot 91 at the lower portion of each side wall located inside. . Further, the angle changing plates 75a and 75b are rotatably attached to the inner sides of the defective product discharge rod 80 by the support pins 92a and 92b at the lower portions of the outer side walls. Further, the angle changing plates 75a and 75b are pivotally attached to the lower portions of the levers 93a and 93b, respectively, in the upper portion of the side wall located on the outer side. The levers 93a and 93b are fixed by the decorative screws 96a and 96b through the long holes 95a and 95b of the support plates 94a and 94b fixed to the upper portions of the side walls of the defective product discharge rod 80 at the upper part. It is fixed to each side wall of the non-defective product discharge rod 80. The angle changing plates 75a and 75b are loosened with the decorative screws 96a and 96b, and the levers 93a and 93b are swingable around the decorative screws 96a and 96b. The angle can be changed by moving up and down along the long holes 95a and 95b of 94a and 94b.

  In the embodiment of the present invention, the defective product discharge basket 80 is detached from the main body of the sorter by removing the patchon lock 44 and rotating the front optical detection unit 32a upward as shown in FIGS. This can be easily performed by screwing the urea decorative screws 73 on the both side walls 72a and 72b of the cover body 72 in a state where the cover 45 is supported at the open position by the support means such as the spring 45. The defective product discharge rod 80 removed from the sorter main body together with the cover body 72 is cleaned by compressed air from the cleaning air nozzle 82 shown in FIG. As shown in FIG. 12, the defective product discharge rod 80 is screwed off from the inner surface of the front wall portion of the cover body 72 and separated from the cover body 72 as necessary. Can be cleaned up.

  After the defective product discharge rod 80 is removed from the sorter main body, as shown in FIGS. 9 and 10, the first discharge rod 16 and the third discharge rod 18 constituting the non-defective product discharge rod left on the sorter main body side are provided. Although they are exposed to the outside, they are similarly cleaned by compressed air from the cleaning air nozzle 82. At this time, the first and second chutes 24 and 25 and other members disposed between the optical detectors 32a and 32b, the ejector 33 disposed below the optical detectors 32a and 32b, and the like are simultaneously provided. If cleaning is to be performed, the inside of the sorter can be efficiently and effectively cleaned.

  When the defective product discharge rod 80 is attached to the main body of the sorter, the procedure can be performed in the reverse order of the above removal. That is, the defective product discharge rod 80 may be attached to the inside of the cover body 72 with a plurality of bolts 74, and then the cover body 72 may be attached to the sorter body with a plurality of urea decorative screws 73. At that time, the angle changing plate 75 is attached between the first discharge rod 16 and the second discharge rod 17 and between the third discharge rod 18 and the fourth discharge rod 19.

  The color sorter in the present embodiment can remove the defective product discharge rod 80 from the sorter body together with the cover body 72 by a simple operation of unscrewing the urea decorative screw 73, and is left on the sorter body side. As a result, it is possible to easily remove the ejector provided below the optical detector and the dust that adheres to and accumulates on each discharge rod, even if you are not a specialized worker. it can. Also, the defective product discharge rod 80 can be easily separated from the cover body 72 by screwing the bolt 74, and dust and the like adhering to and depositing on each discharge rod can be more effectively cleaned. . The color sorter according to the present embodiment removes the defective product discharge basket from the sorter main body in a state where the front optical detection unit 32a is rotated upward as described above to open the space where the sorted portion flows down. Therefore, the chutes 24 and 25 and other members disposed between the optical detection units 32a and 32b, and the ejector 33 and the like disposed below the optical detection units 32a and 32b are disposed together with the discharge rods. At the same time, it becomes possible to clean easily, and the entire inside of the sorter can be efficiently cleaned. The color sorter according to the present embodiment is suitable not only for cleaning each discharge basket but also for performing other maintenance.

  The color sorter in the above embodiment can remove the defective product discharge rod 80 from the sorter main body by rotating the front optical detection unit 32a upward, but the front optical detection unit 32a is moved upward. It may be possible to remove the defective product discharge rod 80 from the main body of the sorter without rotating it. In that case, unlike the above embodiment, the color sorter may be one in which the optical detection unit does not rotate. In addition, the color sorter of the above embodiment removes the defective product discharge basket from the main body of the sorter, but the removed discharge basket may be a non-defective product discharge basket, or a defective product discharge container and a non-defective product discharge container. Both may be used. In this case, the defective product discharge rod and the non-defective product discharge rod may be integrally removable, or may be separately removed.

  The color sorter in the above embodiment is configured such that the cover body 72 to which the defective product discharge rod 80 is fixed can be attached to and detached from the sorter main body with the urea decorative screw 73, but can be easily operated. It may be detachable by fixing means. Further, the cover body 72 may be slide-mounted or fitted to the sorting machine main body.

  Although the color sorter in the above embodiment fixes the defective product discharge rod 80 to the cover body 72 with a bolt, it may be detachable by other means.

  The color sorter in the above embodiment uses an inclined chute as means for transferring the raw material to the optical detection unit, but may use a horizontally arranged conveyor. The color sorter uses air as an ejector for removing defective products, foreign matters, etc., but may use a leaf spring driven by a solenoid or the like. Further, in the color sorter, the optical detectors 32 are arranged in a pair on the top and bottom or front and back with the chute interposed therebetween, but the optical detectors 32 may be arranged only on either one.

  The color sorter in the above embodiment includes a primary sorting unit and a secondary sorting unit, but may include only a primary sorting unit, or may include a tertiary or higher sorting unit. Moreover, although the said color sorter uses a line sensor as an imaging means which images a raw material in a detection position, an area sensor may be used.

  The color sorter in the above embodiment uses a gas spring as means for supporting the front optical detection unit 32a rotated upward, but uses a support member such as another damper member. Also good. Moreover, although the said color sorter uses a Patchon lock as a means to fix the front side optical detection part 32a to a sorter main body, it may use another fixing member.

  By the way, in the color sorter in the present embodiment, as shown in FIG. 14, a wind power sorter 200 that separates and removes fine dust and the like mixed in the raw material before the raw material is put into the charging hopper 8. Can be provided.

  The wind power sorter 200 includes a separation unit 210 that separates and removes fine dust and the like mixed in the raw material, and a discharge unit 230 that discharges the fine dust and the like separated and removed by the separation unit 210 to the outside.

  The separation unit 210 is composed of a box-shaped machine frame 213 having a raw material charging port 211 formed in the upper portion and a lower portion opened as a fine grain discharge port 212, and the machine frame 213 includes a plurality of pieces. The drift cereal plates 214 to 221 are sequentially arranged alternately to form a zigzag drop passage. The fine grain outlet 212 of the machine casing 213 is arranged on the charging hopper 8.

  Further, in the machine casing 213, a shutter mechanism 222 is arranged in a state of being constantly urged in a direction to close the gap with the flow cereal plate 215 at the lower part of the flow cereal plate 214. The amount of the raw material passing through is limited, and the raw material falls in a flat state.

  Further, a sorting air passage 224 for sending fine dust or the like separated from the raw material to a suction air passage 231 described later is formed below the machine casing 213, and the sorting air passage 224 is provided at the entrance of the sorting air passage 224. An air passage shielding plate 223 is provided for adjusting the flow rate of the air flowing into the.

  On the other hand, the discharge unit 230 includes a suction air passage 231 extending from the machine casing 213 and communication pipes 232 and 233 that connect the suction air passage 231 to a suction fan 235 provided at the lower part of the color sorter 1 main body. Yes.

  Further, the suction air passage 231 is provided with an outside air inlet 238 for biasing the opening / closing damper 237, and the suction force of the suction fan 235 can be adjusted by adjusting the opening degree of the opening / closing damper 237. ing.

  The suction fan 235 can also be used as a suction fan for communicating the suction ducts 76 and 77 provided on the side walls of the second and fourth discharge rods 17 and 19 with each other (FIG. 10). ~ 12). The connecting pipe 234 shown in FIG. 14 is for communicating the suction ducts 76 and 77 with the suction fan 235. In FIG. 14, dust and the like sucked by the suction fan 235 are discharged out of the apparatus by the discharge pipe 236.

  In the wind power sorter 200 used in the present embodiment, the raw material input from the raw material input port 211 formed at the upper part of the machine frame 213 is fed to the drifting slab by the shutter mechanism 222 disposed at the lower part of the cerealing plate 214. The amount of passage is limited between the 215 and the flat plate, that is, a flat state, that is, a substantially uniform thickness, and falls into a zigzag drop passage. At that time, for example, when the raw material is brown rice, fine dust that is lighter than brown rice, such as rice husk fragments, swarf, rice cake, and rice cake, is separated by the air flow generated by the action of the suction fan 235 and sucked from the sorting air passage 224. The air is conveyed to the air passage 231 and discharged from the discharge pipe 236 to the outside through the connection pipes 232 and 233. And in this Embodiment, since the wind power sorter 200 is arrange | positioned so that the fine grain discharge port 212 of the machine frame 213 may be located on a charging hopper, the raw material from which fine dust etc. were separated and removed is the said fine grain. Directly supplied from the discharge port 212 to the charging hopper 8.

  In addition, if the suction fan 235 is also used as a fan for discharging dust and the like from the suction ducts 76 and 77 provided on the side walls of the discharge rods 17 and 19, dust that has risen by the ejector means and the like inside the color sorter is simultaneously obtained. It can be discharged out of the machine, and it is possible to prevent the sorting function from being lowered efficiently.

  Although the color sorter in the present embodiment is provided integrally with the wind sorter 200, the wind sorter 200 may be separable from the color sorter body. By making the wind power sorter 200 separable from the color sorter main body, it is efficient without using the wind power sorter when sorting the raw material with little mixing of fine dust and the like. In addition, even when the space for using the color sorter is small, it is possible to deal with it by separating the wind sorter. Furthermore, it is effective because a single wind power sorter can be shared by a plurality of color sorters.

  Needless to say, the configuration of the color sorter of the present invention is not limited to the above embodiment, and the configuration thereof can be changed as appropriate without departing from the scope of the present invention.

  The color sorter of the present invention can remove fine dust mixed in the raw material supplied to the sorter in advance, and dust does not accumulate near the optical detection unit, thus reducing the sorting performance of the sorter. I will not let you.

DESCRIPTION OF SYMBOLS 1 Color sorter 2 Elevating part 3 Optical sorting part 4 Vibrating conveyor 8 Loading hopper 16 1st discharge rod 17 2nd discharge rod 18 3rd discharge rod 19 4th discharge rod 24 1st chute 25 2nd chute 32 Optical detection part 33 Ejector 40 Trough 52a, 52b Transparent plate wiping wiper 53 Cleaning wiper 71 Suction fan 76, 77 Suction duct 79 Discharge pipe 200 Wind sorter 210 Separating part 211 Raw material inlet 212 Fine grain outlet 213 Machine frame 214-221 222 Shutter mechanism 223 Air passage shielding plate 224 Sorting air passage 230 Discharge portion 231 Suction air passage 232 to 234 Communication pipe 235 Suction fan 236 Discharge pipe 237 Opening / closing damper 238 Outside air intake

Claims (3)

An input part for an object to be sorted, a transfer means for transferring an object to be sorted put into the input part, an optical detection means for detecting an object to be sorted falling from an end of the transfer means at a detection position, and the optical a further color sorter comprising a ejector means for selecting an object to be sorted matter based on the result of detection by the optical detection means is provided below the detection means, to discharge the objects to be sorted matter below said ejector means In the case of further comprising a discharge trough, and connecting the suction duct provided on the side wall of the discharge trough to the outside through a suction fan,
The charging unit includes a wind power sorting unit including a separation unit that separates foreign matters mixed in the object to be sorted and a discharge unit that discharges the foreign matter separated by the separation unit, and the separation unit of the wind sorting unit is a loading hopper. while it is disposed in the opening upper part of the, color sorter the discharge portion of the wind sorting means and said Rukoto communicates with the outside through the suction fan.   2. The color sorter according to claim 1, wherein the wind power sorting means is separable from the color sorter main body. The optical detection means includes an illumination means for illuminating the detection position, an image pickup means for picking up an object to be sorted at the detection position, and a background arranged behind the detection position in the image pickup direction of the image pickup means. 3. A color according to claim 1, wherein a transparent plate is disposed on the front surface of the illumination means, and a wiper body for cleaning the transparent plate is slidably provided. Sorting machine.