JPS6171878A - Color selector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to improvements in color sorting devices.

This type of color sorting device uses a light-receiving element to detect the amount of light that is obtained by projecting light onto falling particles, transmits the output to a control circuit, operates a spray nozzle, and uses the jet action to separate particles of different colors. It is equipped with a photoelectric sorting room.

In order to increase the amount of particles to be sorted as much as possible, by increasing the flow rate of particles in the downflow gutter, the flux of the falling trajectory expands, and the uniform particles near the unique particles are ejected together by the jet action during sorting. . In order to deal with this, if the flux of the flow trajectory is made to flow one particle at a time, the amount of sorting will decrease, so it is unavoidable to increase the amount of sorting, and remove the different color particles mixed with regular particles. Re-selection is the norm.

In view of the above points, the present invention provides efficient and cyclical communication between the primary sorting section and the secondary sorting section.
In addition to increasing the particle flow m in the photoelectric sorting room as much as possible, particles mixed with different colors are circulated several times to effectively sort them, thereby ensuring the mass production of carefully selected, high-quality particles. The purpose is to develop and provide a high-performance color sorting device that achieves this goal smoothly and quickly.

The present invention will be explained with reference to embodiment figures. Figures 1 to 3
The figure shows a storage tank 1 or 1A at the top and vibration conveyance! Ti
A feeding section 3 or 3A consisting of 2 or 2 A is provided, and an inclined sorting mallet section 6 that houses a downflow gutter 4, a photoelectric sorting chamber 5, etc. is provided inside, and a plurality of the mallet sections 6 are connected to a box-shaped machine. Frame 7
A plurality of the photoelectric sorting chambers 5...
is divided into an arbitrary number of primary sorting sections A and secondary sorting sections B,
A spray nozzle 8 is provided in the photoelectric sorting chamber 5, and the nozzle 8 is connected to a light receiving element 11 provided in a photoelectric device 10 via a control circuit 9, and a light source 12 emits light onto the particles flowing down from the stream 14. The light receiving element 11 detects the amount of light obtained by
13 is a grain collection cylinder for particle conditioning, 14 is a different color particle discharge port, and 15 is a vibrating device for a vibrating conveyance gutter.

And each light i! provided in the primary sorting section A! Sorting room 5...
・The different color particle discharge port 14... and the secondary sorting section B
A supply port 17 of the secondary fried grain 16 that connects to the supply section 3 of
The grains are rated M by the cross-feeding conveyor 18, and the grains are collected for grading in each photoelectric sorting room 5 provided at the side of the secondary sorting section.
! 13 and the supply port 17A of the primary lifter 19 that connects to the supply section 3 of the primary sorting section A is connected to the supply port section 17A of the primary sorting section A, which is connected to the supply section 3 of the primary sorting section A.
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With the above-described configuration, when the raw material mixed with different color grains is supplied to the storage tank 1 provided in the supply section 3 of the primary sorting section A through the primary grain lifting machine 19 and the device is started, the storage tank 1 is activated. The mixed particles flowing down from the tank 1 to the vibrating conveyance gutter 2 flow down from the gutter end of the grain feeding gutter 2 to the downflow gutter 4 due to the photographing operation of the vibrating device @15, and each particle flowing in the gutter is transferred to the photoelectric sorting chamber. 5
The water flows down in a flying manner along a predetermined flow trajectory X. In the photoelectric sorting chamber 5, a light source 12 is applied to each of the particles flowing down.
The light receiving element 11 detects the amount of light obtained by emitting light from The grains are discharged from the discharge port 14 and flowed down to the transverse conveyor 18 to be placed thereon, and the sorted grains are conveyed out of the machine via the grain grain collector 13 for grain straightening and are entrusted to the next process. This primary sorting action increases the flow rate of particles in the downflow gutter 4 due to the need for mass production, so the flux of the downflow trajectory The particles are discharged from the discharge port 14 with some regular particles mixed in with the different color particles.

The particles loaded on the transverse conveyor 18 in this way are
It is fed horizontally and flows into the supply port 17A of the secondary grain lifting machine 16, and is also supplied by the grain lifting machine 16 to the storage tank 1A of the supply part 3A provided in the secondary sorting part B. The particles flow down into the photoelectric sorting chamber 5 from the flow fa4 via the vibrating conveyance gutter 2A, and the mixed different colored particles are sorted out in the same way as the above-mentioned sorting action, and the different colored particles are discharged from the different colored particle outlet 14 to the outside of the machine. The discharged and sorted granules flow through the grading grain barrel 13 to the transverse conveyor 20, are loaded on top of them, and are conveyed via the primary grain cylinder 12. It is returned to the supply section 3 of the primary sorting section A, circulates through the aforementioned sorting process, and performs the highly accurate sorting operation again.

Claim (2) provides that the primary field grain I
! 119 and each discharge port 21 of the secondary frying bin 16
．． 21A to the primary sorting section A and the secondary sorting section B.
Storage tanks 1, 1 provided in each supply section 3.3A of
Since it is connected to the side wall opening 22.22A of A, compared to a conventional device in which the tank is suspended below the discharge port of the grain lifting machine, particles can be spread across the entire surface of the tank from the opening in the side wall in the lateral direction. Because it flows out in a dispersed manner and accumulates in a uniform manner in the tank,
This has the effect of increasing the storage capacity of the tank and lowering its machine height, making it possible to downsize the entire device.

Claim (3) provides that the secondary sorting section B
The particle amount detector 23 provided in the supply section 3A of the primary sorting section and the supply amount adjustment device 24 provided in the supply section 3 of the primary sorting section are connected to a control circuit 9.
Since the storage tank 1 of the secondary sorting section B is connected via
The vibration device 15 of the vibrating conveying gutter 2 provided in the supply section 3 of the primary sorting section A is activated by the detection signals of the particle amount upper limit sensor 23A and the particle amount lower limit sensor 23B provided on the side wall of A.
Since it is controlled to be N and OFF, the flow rate of particles flowing through the sorting process is stabilized with just enough or too little, which has the effect of ensuring that efficient sorting action can be continued at all times.

Claim (4) provides that the primary sorting section A
Since the particle pot detector 24 provided in the supply section 3 of the primary sorting section is connected to the alarm 25 via the control circuit 9,
The raw material supplied to the storage tank is a sensor for the upper limit of particle amount.
When the 24A position is reached, a waste warning is issued, so the raw material supply operation is immediately stopped and only the sorting operation is continued, which has the effect of completely preventing accidents caused by overflow of excess particles.

Claim (5) is a storage tank A provided in a supply section 3A of a secondary sorting section B as a return reserve tank for collecting particles overflowing from an overflow window 26 provided on a side wall of the storage tank A. 27, the storage tank IA of the secondary sorting section B
Since the excess grains flow down to the supply port 17A of the secondary grain miller 16 through the return path 28 and are returned, it is possible to completely prevent accidents in which excess grains overflow into the storage tank of the secondary sorting section. In addition, there is an effect that the secondary sorting operation can be safely continued at all times without interrupting the particle flow.

Claim (6) provides support legs 29...
Since it is provided in a space 30 isolated from the internal machine frame surface, the vibrations generated by the conveyor are not directly transmitted to each device inside the machine frame, so the accuracy of the sorting action can always be maintained well and stably. effective.

The color sorting device of the present invention is used for color sorting grains (1) synthetic resin pellets, glass granules (9) tablets, etc. mixed with different colored particles. Further, the above-mentioned transverse conveyance means a scraper, a screw conveyor, a belt conveyor, a vibrating conveyance device, and the like. In some cases, the vibration device 15 of the vibrating conveyance gutter 2A provided at the lower part of the storage tank 1A may be stopped based on a detection signal from the particle amount lower limit sensor 23B of the storage tank 1A provided in the supply portion 3A of the secondary sorting portion B. Further, the supporting legs may be provided to be vertically adjustable as necessary.

In this way, the color sorting device of the present invention efficiently and cyclically communicates between the primary sorting section and the secondary sorting section.
The particle flow rate in the photoelectric sorting chamber can be increased as much as possible to greatly improve the sorting efficiency, and the particles mixed with different colors can be circulated several times to effectively sort and mass-produce carefully selected, high-quality particles. This has the effect of being able to reliably, smoothly and quickly achieve the following.

[Brief explanation of drawings]

The drawings are illustrations of embodiments of the present invention. Fig. 1 is a side sectional view of this device, Fig. 2 is a perspective view of the main parts of this device, Fig. 3 is an explanatory diagram of the flow stroke of the m-piece, and Fig. 4 is a side sectional view of the bottom of the machine frame. be. 1.1A... Storage tank 2.2A... Vibrating conveyance gutter 3.3A... Supply section 4... Downflow gutter 5... Photoelectric sorting room 6... Sorting seed section 7... Box-shaped machine frame 8... Injection nozzle 9... Control circuit
10... Photoelectric device 11... Light receiving element 12
...Light source 13...Grain collection tube for particle conditioning 14...Unusual particle discharge port 15...Vibration device @ 16...Secondary grain lifting machine 17.17A...Feeding port section 18. ... Conveyor for cross-feeding 19... Primary grain lifting machine 20... Conveyance removal for cross-feeding 21.21A... Discharge port section 22.22A... Side wall opening 23... Particle amount Detector 23A...Particle amount upper limit sensor 23B...Particle amount lower limit sensor 24...Particle one color detector

Claims (6)

[Claims] (1) The amount of light obtained by projecting light onto the falling particles is detected by a light receiving element, the output is communicated to the control circuit to operate the injection nozzle, and the different color particles are separated by the blast action. In a sorting device in which a plurality of photoelectric sorting chambers are arranged side by side in a machine frame, the plurality of photoelectric sorting chambers are divided into an arbitrary number of primary sorting sections and a secondary sorting section; The different color particle discharge port of each of the provided photoelectric sorting chambers is connected to the supply port of the secondary grain lifting machine, which is connected to the supply section of the secondary sorting section, by a traversing conveyor, and The grain collecting tubes for grading in each photoelectric sorting room provided in the secondary sorting section and the supply port of the primary grain lifting machine that connects to the primary sorting section are connected by a transverse conveyor. Characteristic color sorting device. (2) A side wall portion of a storage tank in which each discharge port of the primary grain lifting machine and the secondary grain lifting machine is provided in each supply part of the primary sorting part and the secondary sorting part. A color sorting device according to claim (1) connected to an aperture. (3) The particle amount detector provided in the supply section of the secondary sorting section and the supply amount adjustment device provided in the supply section of the primary sorting section are connected via a control circuit. The color sorting device according to item 1) or item (2). (4) Claims (1), (2), or (3), in which a particle amount detector provided in the supply section of the primary sorting section is connected to an alarm via a control circuit. ) The color sorting device described in section 2. (5) The storage tank provided in the supply section of the secondary sorting section is connected to a return reserve tank that collects particles overflowing from an overflow window provided on the side wall of the tank.
1) Description sorting device described in section 1). (6) The color sorting device according to claim (1), wherein the transverse conveyor is provided in a space separated from the machine frame surface inside a support leg that supports the machine frame bottom.