WO2013175870A1

WO2013175870A1 - Color sorter

Info

Publication number: WO2013175870A1
Application number: PCT/JP2013/060156
Authority: WO
Inventors: 悟佐々本; 昌昭西本
Original assignee: 株式会社サタケ
Priority date: 2012-05-24
Filing date: 2013-04-03
Publication date: 2013-11-28
Also published as: TWI589363B; JPWO2013175870A1; CN104334288B; CN104334288A; BR112014029162B1; TW201347860A; KR20150013844A; JP6052287B2; BR112014029162A2; KR102074536B1

Abstract

Provided is a color sorter that easily carries out flow rate adjustments for raw materials in a slip flow on a shoot for an optical sorting unit and, when the raw material is supplied from a huller at a rate greater than the maximum throughput, automatically restricts the amount input to an input hopper and can prevent damage and burn out of a delivery system motor. An input hopper (6) for receiving the raw material is formed from: a left and right pair of side walls; an elevator unit housing (7) side front wall (6b); a back wall (6c) facing the front wall (6b); an inclined shelf plate (6d) extending at an incline from the lower part of the front wall (6b); and an inclined shelf plate (6e) positioned lower than the inclined shelf plate (6d) and provided so as to extend at an incline towards a supply opening (7a) of the elevator unit housing (7) from the lower part of the back wall (6c). In addition, a flow rate adjusting valve (12) that adjusts the amount of raw material received is provided on the lower part of the inclined shelf plate (6e), and a temporary retaining tank (21) and the flow rate adjusting valve (12) are connected so as to restrict the received flow of raw material when the temporary retaining tank (21) moves downward.

Description

Color sorter

The present invention relates to a color sorter for sorting grains such as rice and wheat and granular materials such as resin pellets into good and defective products and removing foreign substances mixed in the granular materials.

The present applicant has developed a small color sorter based on the concept of realizing the performance and low price suitable for a rice hull line in a farmer, and has filed a plurality of patent applications.
Among these, according to the color sorter described in Patent Document 1, the elevator includes a plurality of elevators that raise the raw material, and the optical selection unit that sorts the raw materials that are raised by at least one of the elevators. In the color sorter, a discharge unit that discharges non-defective products is provided at the height of the color sorter, and one of the elevators supplies the raw material determined by the optical sorting unit to the discharge unit. The color sorter is characterized by being raised toward the front.
Thereby, the raw material determined to be a non-defective product by the optical sorting unit is raised by one of the elevators and discharged from the discharge unit provided at a high position of the color sorter. The raw material can be directly supplied to the weighing machine and the bagging machine, and there is an operation and effect that each device of the hulling line can be easily arranged.
Moreover, according to the color sorter described in claim 2 of Patent Document 1, the lift unit is formed by arranging a plurality of lifts adjacent to each other in the width direction of the color sorter behind the optical sorting unit. It is characterized by.
As a result, the elevating part can be made compact, and since the elevating part is arranged behind the optical sorting part and along the width direction, the apparatus can be installed without increasing the width of the apparatus. There is an effect that the space can be kept small.
Furthermore, according to the color sorter according to claim 3 of Patent Document 1, a charging hopper for feeding the raw material to the color sorter is provided at a lower position of the color sorter behind the lifting unit. It is characterized by that.
Thereby, it becomes possible to easily convey the raw material from the hulling machine in the previous process, the apparatus can be easily arranged, and there is an effect and effect that the width of the apparatus is not widened.
And according to the color sorter of Claim 4 of patent documents 1, it has a transverse feed conveyor which conveys the raw material sorted by an optical sorting part to a predetermined elevator.
Thereby, there exists an effect | action and effect that a new space for arrange | positioning a transverse feed conveyor is not required.

However, in the color sorter described in Patent Document 1, since the raw material is directly fed into the feeding hopper from the hulling machine in the previous process, for example, a defective product mixing rate is high from the hulling machine. When the raw material is charged, an operation for reducing the flow rate of the raw material flowing on the chute of the optical sorting unit to improve the sorting accuracy is required. Conventionally, an operator visually determines the amount of raw material that slides on the chute and adjusts the flow rate. In addition, if raw materials exceeding the maximum processing capacity of the color sorter are supplied from the previous huller, the elevator will become clogged and overload may occur, leading to damage to the transport system motor such as the elevator motor or burning. There was (fear).

JP 2011-92861 A

In view of the above problems, the present invention easily adjusts the flow rate of the raw material that slides on the chute of the optical sorting unit, and when a raw material having a maximum processing capacity or more is supplied from the previous huller, It is a technical problem to provide a color sorter that can automatically limit the amount of charging to the charging hopper and prevent damage and burnout of the transport motor.

In order to solve the above-described problems, the present invention provides an elevating part (2) provided with a charging hopper (6) for receiving a raw material at the lower back of the elevating part case (7), and the elevating part case (7). An optical sorting unit (3) that is disposed in the front side intermediate portion of the plate and optically sorts the raw material raised by the elevating unit (2) by flowing down, and below the optical sorting unit (3) And an external discharge unit (4) for separating the product into a non-defective product and a defective product or a foreign object according to the result of optical sorting, and discharging from the machine, and an upper part on the front side of the elevating unit (2) In the color sorter configured to include a storage tank unit (5) provided between the optical sorting unit (3) and temporarily storing the raw material raised by the lifting unit (2), The charging hopper (6) for receiving the raw material has a pair of left and right side walls (6f), (6g), A front wall (6b) on the lifting / lowering unit housing (7) side, a rear wall (6c) facing the front wall (6b), and a short shape extending inclined from the lower part of the front wall (6b) The inclined shelf board (6d) and the inclined shelf board (6d) are located below the inclined shelf board (6d) and from the lower part of the rear wall (6c) toward the supply port (7a) of the elevating part housing (7) A flow rate adjusting valve (12) that adjusts the amount of raw material received is formed at the lower portion of the elongated inclined shelf (6e). ) And a temporary storage tank (21) that moves up and down according to the storage amount, and further, the temporary storage tank (21) and the flow rate adjustment valve (12). Connected to limit the amount of raw material received when the temporary storage tank (21) is moved down. And features.

The temporary storage tank (21) is attached to the upper part of the lifting / lowering part casing (7) by a link mechanism including an upper link (22) and a lower link (23), and the lifting / lowering part casing ( 7) A dredging basin (25) is provided on the front side of the upper part, and the downdraft (25) and the temporary storage tank (21) are arranged so that the temporary storage tank (21) moves up and down below the downflow basin (25). ) Was held by a suspension spring (24).

The flow rate adjusting valve (12) is locked to the charging hopper (6) by an arm (14) centering on the rotating shaft (13), and the flow rate adjusting valve (12) is always pulled by a pulling force of a spring (15). While the adjustment valve (12) is rotated so as to approach the inclined shelf (6b), the flow rate adjustment valve (12) limits the amount of raw material received when the temporary storage tank (21) is moved downward. The flow control valve (12) and the temporary storage tank (21) were connected by a first rod (17), a second rod (19) and a relay arm portion (18).

The outlet (21a) of the temporary storage tank (21) is provided with an opening / closing shutter (27) whose opening degree can be adjusted, and the opening / closing shutter is provided on the side surface of the optical sorting section (3). An open / close lever (28) is provided so that an operator can manually open and close the shutter (27), and the open / close lever (28) and the open / close shutter (27) can be linked by a wire (29). .

According to the first aspect of the present invention, the charging hopper (6) for receiving the raw material has a pair of left and right side walls (6f), (6g) and a front wall (6b) on the side of the elevating part housing (7). A rear wall (6c) opposed to the front wall (6b), a short inclined shelf board (6d) that is inclined and extended from the lower part of the front wall (6b), and the inclined shelf board (6d) ) And a slanted long shelf plate extending from the lower part of the rear wall (6c) to the supply port (7a) of the lifting / lowering unit housing (7) ( 6e). Accordingly, the plurality of inclined shelf boards (6d) and (6e) alleviate the drop impact force when the raw material is received, and the inclined shelf board (6e) is formed longer than the inclined shelf board (6d). In addition, since the inclined surface is asymmetrical, the possibility that the grains form an arch structure is low, and the raw material can be quickly supplied toward the supply port (7a). And when the raw material more than the maximum processing capacity of the color sorter is supplied from the hulling machine in the previous process, the temporary storage tank (21) is filled with the raw material and becomes heavy, and the temporary storage tank (21) by its own weight. Since the flow rate adjustment valve (12) is closed and adjusted as the valve moves downward, the amount of charging to the charging hopper (6) is automatically limited, and the transport system motor is damaged or burned out due to clogging of the lifting part. Can be prevented.

Moreover, according to invention of Claim 2, a temporary storage tank (21) is attached by the link mechanism which consists of an upper link (22) and a lower link (23) between raising / lowering part housing | casings (7) upper part. At the same time, a spillway (25) is provided on the front side of the upper part of the elevating part housing (7), and the sluice basin (21) is moved up and down below the sag (25). Since the suspension spring (24) holds between (25) and the temporary storage tank (21), the vertical movement mechanism of the temporary storage tank (21) can be configured easily.

According to the third aspect of the present invention, the flow rate adjusting valve (12) is locked to the closing hopper (6) by the arm (14) centering on the rotating shaft (13), and is always a spring. While the flow control valve (12) is rotated so as to approach the inclined shelf (6b) by the pulling force of (15), when the temporary storage tank (21) moves down, the flow control valve (12) The first rod (17), the second rod (19) and the relay arm portion (18) are connected to each other between the flow control valve (12) and the temporary storage tank (21) so as to limit the amount received. Therefore, the responsiveness of closing adjustment of the flow rate adjusting valve (12) accompanying the downward movement of the temporary storage tank (21) is remarkably improved. As a result, it is possible to quickly prevent damage and burnout of the transport system motor.

Furthermore, according to the invention described in claim 4, the opening / closing shutter (27) capable of adjusting the opening degree is provided at the outlet (21a) of the temporary storage tank (21), and the optical sorting section (3). An opening / closing lever (28) is provided on the side of the opening / closing shutter (27) so that an operator can manually open and close the opening / closing shutter (27), and a wire (29) is provided between the opening / closing lever (28) and the opening / closing shutter (27). It is configured so that it can be linked. As a result, when the mixing ratio of defective products in the raw material is high, the operator operates the opening / closing lever (25) and flows on the chute while checking the object to be sorted flowing on the chute of the optical sorting unit (3). The flow rate of the raw material can be changed. This is, for example, much more responsive compared to the case where a conveying device such as a vibration feeder is used to supply raw materials to the chute, and it is possible to reduce the waiting time until an appropriate flow rate is achieved, and thus the sorting efficiency. Will be greatly improved.

It is a perspective view showing the whole color sorter of the present invention. It is a right view of the same color sorter. It is a partially broken sectional view for explaining an internal structure by partially cutting out the same color sorter. It is an enlarged view of the raising / lowering part lower part of a color sorter same as the above. It is an enlarged view of the raising / lowering part upper part of a color sorter same as the above.

DETAILED DESCRIPTION Embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the entire color sorter of the present invention, FIG. 2 is a right side view of the same color sorter, and FIG. 3 is a partially broken sectional view of the same color sorter. 4 is an enlarged view of the lower part of the elevating part, and FIG. 5 is an enlarged view of the upper part of the elevating part.

The color sorter 1 according to 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.

As shown in FIGS. 1 to 3, the color sorter 1 according to the present invention includes an elevating unit 2 having a charging hopper 6 for receiving a raw material in a lower part on the back side of the elevating unit housing 7, and the elevating unit 2. An optical sorting unit 3 that performs optical sorting when the raw material flows down at the front side intermediate portion, and is provided below the optical sorting unit 3 to separate non-defective products from defective products or foreign materials for discharge outside the machine. An out-of-machine discharge unit 4, and a storage tank unit 5 that is provided between the upper part on the front side of the lifting unit 2 and the optical sorting unit 3 and temporarily stores the raw material raised by the lifting unit 2. Configured.

The elevating unit 2 is provided with a driving pulley 8 and a driven pulley 9 at the upper and lower positions in the elevating unit housing 7, and a large number of buckets 10 are attached between the driving pulley 8 and the driven pulley 9. Further, the endless belt 11 is configured so as to be pivotable (see FIGS. 2 and 3). When the endless belt 11 rotates between the pulleys 8 and 9, the raw material received from the charging hopper 6 is lifted and conveyed, and at the moment when a large number of buckets 10 are rotated by the driven pulley 9. The raw material is conveyed by being thrown into the storage tank 5.

A feeding hopper 6 is provided in the lower part on the back side of the elevating unit 2. The feeding hopper 6 is inclined and extended from a pair of left and

right side walls

6f and 6g, a front wall 6b on the side of the lift housing 7 side, a rear wall 6c facing the front wall 6b, and a lower portion of the front wall 6b. A short inclined shelf 6d, which is positioned below the inclined shelf 6d, and is inclined and extended from the lower portion of the rear wall 6c toward the supply port 7a of the elevating unit housing 7. And a long inclined shelf 6e.

A flow rate adjusting valve 12 that adjusts the amount of raw material received in cooperation with the storage tank unit 5 is provided below the inclined shelf 6e of the charging hopper 6 (see FIGS. 2, 3 and 4). The flow rate adjusting valve 12 is pivotally attached to a rotating shaft 13, and the rotating shaft 13 fixes an arm 14. One end of a spring 15 is fixed to the arm 14, while the other end of the spring 15 is fixed to the arm 14. It fixes to the fixing | fixed part 16 installed in the raising / lowering part housing | casing 7, and is always rotated so that the flow volume adjustment valve 12 may approach the inclination shelf 6e with the pulling force of the spring 15. FIG. On the other hand, one end side 17a of the first rod 17 is fixed at a position facing the rotation shaft 13 of the arm 14, and the other end side 17b of the first rod 17 is connected to one end side of the relay arm portion 18. Fix it. And the one end side 19a of the 2nd rod 19 is fixed to the position which opposes the 1st rod other end side 17b of this relay arm part 18, and the other end side 19b of this 2nd rod 19 is the said storage tank part. 5 to the tank intermediate fitting 20.

By the way, the temporary storage tank 21 forming the storage tank unit 5 is attached with a structure having a degree of freedom by a link mechanism including an upper link 22 and a lower link 23 between the upper part of the elevator unit housing 7 of the elevator unit 2. (See FIGS. 3 and 5). Further, a drop rod 25 protrudes from the front side of the upper part of the lift housing 7, and a suspension spring 24 is attached to the upper link portion 22 so as to hold the temporary storage tank 21 below the drop rod 25. While fixing one end side, the other end side of the suspension spring 24 is fixed to the fixing part 26 installed in the flow-down rod 25, and the temporary storage tank 21 is suspended.

Thus, the second rod 19 is moved up and down by the amount of the storage in the temporary storage tank 21, and the flow rate adjusting valve 12 can be rotated between the solid line position and the one-dot chain line position. That is, if the storage amount of the temporary storage tank 21 is small, the second rod 19 is not moved downward, the flow rate adjustment valve 12 is in the position of the solid line, and the supply port 7a is greatly opened. It is supplied to the case bottom 7b. On the other hand, if the storage amount of the temporary storage tank 21 is large, the downward movement of the second rod 19 is increased due to its own weight, and the flow rate adjustment valve 12 is in the position of the one-dot chain line and the opening degree of the supply port 7a is limited. The raw material whose flow rate is limited is supplied to the case bottom 7b.

The outlet 21a of the temporary storage tank 21 is provided with an open / close shutter 27 whose opening degree can be adjusted, and an open / close lever 28 on the side of the optical sorting unit 3 so that the open / close shutter 27 can be manually opened / closed. The opening / closing lever 28 and the opening / closing shutter 27 can be linked by a wire 29 (see FIG. 2). Moreover, it is good also as a structure which an operator can open and close the opening / closing shutter 27 directly irrespective of the interlock | cooperation of the wire 29. FIG. As a result, when the mixing ratio of defective products in the raw material is high, the operator operates the opening / closing lever 25 and the opening / closing shutter 27 and flows on the chute while checking the object to be sorted flowing on the chute of the optical sorting unit 3. The flow rate of the raw material can be changed.

Next, the configuration of the optical sorting unit 3 will be described in detail. The optical sorting unit 3 is dropped from the chute 30 disposed at an angle of about 60 degrees from the horizontal position, the shelf 31 for conveying the raw material from the temporary storage tank 21 to the chute 30, and the lower end of the chute 30. The optical detection part 32 provided on both sides of the upper and lower sides of the dropping locus | trajectory of the raw material to perform, and the ejector nozzle 33 provided further downward are provided.

The surface shape of the chute 30 is preferably formed in a flat plate shape without a groove portion so that the granular material as a raw material slides in a wide band shape. And in order to prevent the overflow of the granular material from the chute 30 and to prevent the granular material to be selected from floating from the bottom surface while sliding the chute 30, the chute cover 30a is spaced from the bottom surface at a predetermined interval. May be provided (see FIG. 3).

Further, the external discharge unit 4 below the optical sorting unit 3 is on the same inclination line as the chute 30 below the ejector nozzle 33, so that the particles of the dropping trajectory are directly received without receiving the blast from the ejector nozzle 33. A non-defective product collecting hopper 34 is provided, and a non-defective product collecting hopper 35 is provided in parallel with the non-defective product collecting hopper 34 and receives a blast from the ejector nozzle 33 to collect defective products from normal raw materials. Further, a non-defective product discharge hopper 34 is connected to the non-defective product collection hopper 34, and a defective product discharge tub 37 is connected to the defective product collection hopper 35.

The optical detection unit 32 includes

sensors

38 and 39 including CCD line sensors, light sources 40, 41, 42 and 43 including fluorescent lamps,

backgrounds

44 and 45 as background means, and mirrors 46 and 47. It is provided. The

sensors

38 and 39 image the raw material falling from the lower end of the chute 30 at a detection position, and determine whether the raw material is good or defective, or foreign matter mixed in the raw material based on the imaging signal. The ejector nozzle 33 blows out a defective product and a foreign matter determined to be ejected from the flow of the raw material and removes the defective product to the defective product recovery hopper 35 side. In addition, the ejector nozzle 33 may use a leaf spring or the like using a solenoid or the like as a driving means instead of the one that repels the raw material by air.

Hereinafter, the operation in the embodiment of the present invention will be described.
When the raw material is supplied from the opening 6a of the input hopper 6, the material flows down while the impact is reduced by the

inclined shelf boards

6d and 6e, and reaches the lower part of the inclined shelf board 6e. A flow rate adjusting valve 12 that adjusts the amount of raw material received in cooperation with the storage tank unit 5 is provided at the lower portion of the inclined shelf 6 e of the charging hopper 6. At this time, since the temporary storage tank 21 is still empty, the flow rate adjustment valve 12 is in the position of the solid line in FIG. 4 and the supply port 7a is fully opened. For this reason, a relatively large flow rate of raw material is supplied to the case bottom 7b. The raw material supplied to the case bottom portion 7 b is raised in the elevating unit housing 7 by the bucket 10, thrown at the moment when it is rotated by the driven pulley 9, and stored in the temporary storage tank 21 from the flow-down rod 25. . At this time, if the outlet 21 a of the temporary storage tank 21 is closed by the opening / closing shutter 27, the temporary storage tank 21 is filled with the raw material and becomes heavier and moves downward against the suspension spring 24. Along with this, the second rod 19 connected to the tank intermediate fitting 20 also moves downward. As a result, the relay arm 18 linked to the second rod rotates (see FIG. 4), and the first rod 17 moves downward in the lower right direction in the drawing. As a result, the arm 14 rotates about the rotation shaft 14, and the flow rate adjusting valve 12 becomes the position of the one-dot chain line in FIG. 4, and the opening degree of the supply port 7 a is limited. Is supplied to the case bottom 7b. When the temporary storage tank 21 becomes full, the supply port 7a is closed by the flow rate adjustment valve 12.

Then, when the operator operates the open / close lever 25 to open the outlet 21a at the stage where the amount stored in the temporary storage tank 21 is full, the raw material falls on the shelf 31 at a flow rate corresponding to the degree of opening. Then, it will be supplied onto the chute 30. On the other hand, since the temporary storage tank 21 becomes lighter as the storage amount decreases, the second rod 19 moves up. As a result, the flow rate adjusting valve 12 is opened from the closed state, and new raw material is supplied from the charging hopper 6.

The raw material flowing down on the chute 30 falls from its lower end and is detected by the

sensors

38 and 39 of the optical sorting unit 3. Based on the imaging signals of the

sensors

38 and 39, the non-defective and defective raw materials or the foreign matters mixed in the raw materials are determined. Those determined to be defective and foreign matter are ejected from the flow of the raw material by the blast of the ejector nozzle 33 and discharged out of the machine from the defective product discharge rod 37 via the defective product recovery hopper 35. On the other hand, those determined to be non-defective products are discharged from the non-defective product collecting hopper 34 through the non-defective product discharge rod 36 to the outside without receiving the jet of the ejector nozzle 33.

As described above, in the present invention, the charging hopper 6 for receiving the raw material includes the pair of left and

right side walls

6f and 6g, the front wall 6b on the lifting unit housing 7 side, and the front wall 6b. The opposing rear wall 6c, a short slanted shelf 6d extending from the lower part of the front wall 6b, and a position lower than the inclined shelf 6d, and from the lower part of the rear wall 6c It is formed by an elongated inclined shelf 6e that is inclined and extended toward the supply port 7a of the elevating unit housing 7. Thereby, the drop impact force when the raw material is received is alleviated by the plurality of

inclined shelf boards

6d and 6e, the inclined shelf board 6e is formed longer than the inclined shelf board 6d, and the inclined surface is asymmetrical in the left-right direction. Therefore, the possibility that the grains form an arch structure is low, and the raw material can be quickly supplied toward the supply port 7a. When the raw material exceeding the maximum processing capacity of the color sorter is supplied from the previous hulling machine, the temporary storage tank 21 is filled with the raw material and becomes heavy, and the temporary storage tank 21 is moved down by its own weight. Accordingly, since the flow rate adjusting valve 12 is closed and closed, the amount of charging to the charging hopper 6 is automatically limited, and it is possible to prevent damage and burnout of the transport system motor due to clogging of the lifting part. . The color sorter of the present invention is not limited to the above embodiment, and various design changes can be made.

INDUSTRIAL APPLICABILITY The present invention can be applied to a color sorter that sorts grains such as rice and wheat and granular materials such as resin pellets into non-defective products and defective products, and removes foreign matters mixed in the granular materials. .

DESCRIPTION OF SYMBOLS 1 Color sorter 2 Elevating part 3 Optical sorting part 4 External discharge part 5 Storage tank part 6 Loading hopper 7 Elevating part housing 8 Drive pulley 9 Followed pulley 10 Bucket 11 Endless belt 12 Flow control valve 13 Axis 14 Arm 15 Spring DESCRIPTION OF SYMBOLS 16 Fixed part 17 1st rod 18 Relay arm part 19 2nd rod 20 Tank intermediate metal fitting 21 Temporary storage tank 22 Upper link 23 Lower link 24 Suspension spring 25 Flowing drop 26 Fixed part 27 Opening / closing shutter 28 Opening / closing lever 29 Wire 30 Chute 31 Shelf Plate 32 Optical detector 33 Ejector nozzle 34 Non-defective product collection hopper 35 Non-defective product collection hopper 36 Non-defective product discharge rod 37 Defective product discharge rod 38 Sensor 39 Sensor 40 Light source 41 Light source 42 Light source 43 Light source 44 Background 45 Back Ground 46 mirror 47 mirror

Claims

An elevating part (2) provided with a charging hopper (6) for receiving the raw material at the lower back of the elevating part case (7);
An optical sorting unit (3) that is arranged in the front side intermediate portion of the lifting unit casing (7) and optically sorts the raw material raised by the lifting unit (2) by flowing down;
An out-of-machine discharge unit (4) that is disposed below the optical sorting unit (3) and separates into a non-defective product and a defective product or a foreign object according to the result of optical sorting;
A storage tank part (5) provided between the front side upper part of the elevating part (2) and the optical sorting part (3) and temporarily storing the raw material raised by the elevating part (2); In a color sorter configured with
The charging hopper (6) for receiving the raw material includes a pair of left and right side walls (6f), (6g), a front wall (6b) on the side of the lift housing (7), and the front wall (6b) An opposing rear wall (6c), a short inclined shelf board (6d) extending obliquely from the lower part of the front wall (6b), positioned below the inclined shelf board (6d), and While formed by an elongated inclined shelf plate (6e) that is inclined and extended from the lower part of the rear wall (6c) toward the supply port (7a) of the lifting / lowering unit housing (7),
A flow rate adjusting valve (12) for adjusting the amount of raw material received is provided at the lower part of the elongated inclined shelf (6e), and the storage tank (5) moves up and down according to the storage amount. A temporary storage tank (21),
Further, the temporary storage tank (21) and the flow rate adjusting valve (12) are connected so as to limit the amount of raw material received when the temporary storage tank (21) is moved down. Sorting machine.
The temporary storage tank (21) is attached to the upper part of the lifting / lowering part casing (7) by a link mechanism including an upper link (22) and a lower link (23), and the lifting / lowering part casing (7). A downcomer (25) is provided on the upper front side, and the downcomer (25) and the temporary storage tank (21) are arranged so that the temporary storage tank (21) moves up and down below the downcomer (25). The color sorter according to claim 1, wherein the space is held by a suspension spring (24).
The flow rate adjusting valve (12) is locked to the charging hopper (6) by an arm (14) centered on a rotating shaft (13), and is always at the same time by the pulling force of a spring (15). (12) is rotated so as to approach the inclined shelf (6b), while the temporary storage tank (21) is moved downward, the flow control valve (12) limits the amount of raw material received. The flow rate adjusting valve (12) and the temporary storage tank (21) are connected by a first rod (17), a second rod (19) and a relay arm portion (18). Color sorter.
The outlet (21a) of the temporary storage tank (21) is provided with an opening / closing shutter (27) whose opening degree can be adjusted, and the opening / closing shutter (27) is provided on the side surface of the optical sorting section (3). 27) is provided with an open / close lever (28) so that the operator can manually open and close it, and the wire (29) can be linked between the open / close lever (28) and the open / close shutter (27). The color sorter according to any one of claims 1 to 3.