JPS621489A - Cleaner for light source for 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 Field of the Invention The present invention relates to a cleaning device for cleaning dust adhering to a light source in a color sorter that sorts granular materials such as grains based on their color differences.

Prior Art In an apparatus for color sorting grains and other granular materials, a reference color plate and a light receiving element are arranged to face the granular material flowing down from a supply section, and the granular material, the reference color plate, and the light receiving element are arranged to face each other. is irradiated from a light source, the light receiving element detects the amount of reflected or transmitted light obtained from the particles, compares the detected value with a reference light amount value, communicates a signal that deviates from the reference light amount value to the injection nozzle device, and outputs the reference value. The system uses high-pressure air from the injection nozzle to remove foreign particles of different colors from the normal flow path for sorting. The light source, the reference color plate, which separates the dust that attacks the different color particles with the jet of high-pressure air, and the separated dust becomes suspended and serves as a sorting mechanism.
It adheres to the light-receiving element, etc., resulting in a decrease in sorting accuracy, and the operation of the device must be frequently interrupted to clean the sorting mechanism, which causes problems such as a decrease in work efficiency and the need for manpower. Met.

In order to solve the above problems, the dust-proof casings are completely covered with glass and have a light source, pack ground, sensor, etc. inside, and are made to face each other so that there is a hole for the material to be sorted to flow through the center of the casings. A color sorting machine was developed in the 1990s, and was equipped with a wiper mechanism in which a wiper blade was installed in the flow hole of the material to be sorted so that the wiper mechanism could slide freely on the surface that came into contact with the glass plate. 56-1377
It has been proposed as Publication No. 82.

Problems to be Solved by the Invention According to the color sorting machine equipped with the wiper mechanism described above, the front surface of the dust-proof tube in which the background, sensor, etc. are arranged is closed by a glass plate, and the wiper blade comes into contact with the glass plate. When the spray nozzle is used to sort out particles with different colors, the dust that separates from the particles and adheres to the glass plate can be cleaned, saving labor. Detected as particles, even normal particles are injected - To avoid malfunctions caused by being blown away by the jet of the nozzle device, when the wiper mechanism is activated, the supply of raw materials is temporarily interrupted and operation is restarted after cleaning the entire surface of the glass plate. However, the problem of decreased work efficiency remained unresolved.

In order to solve the above-mentioned problems, the present invention makes it possible to clean the light source without interrupting the operation of the sorting action even when cleaning the light source, and to operate the sorting action with high precision and continuously for a long time. It is an object of the present invention to provide a cleaning device for a light source.

Means for Solving the Problems In order to solve the above problems, the present invention provides, in the vicinity of the trajectory of particles mixed with different color particles flowing down from the raw material supply section in an orderly manner,
A reference color plate, an injection nozzle device, a light receiving element, and a light source consisting of a fluorescent lamp are provided, and the amount of light obtained by irradiating particles flowing down along the trajectory from the light source and the amount of light from the reference color plate are detected by the light receiving element. In a color sorter that detects particles of different colors based on the detection signal and operates a jet nozzle device to separate the particles of different colors, a cleaning device that cleans dust, etc. that adheres to the fluorescent lamp and reduces the amount of light. It has a configuration in which a cleaning body is installed so as to be in relative contact with the outer peripheral surface of the fluorescent lamp.

The light source irradiates the particles mixed with different color particles flowing down from the raw material supply section along the flow trajectory, and the detection signal of the light receiving element that detects the amount of light obtained from the falling particles and the reference color plate detects values other than the reference light amount value. If it is a signal, the signal is communicated to the injection nozzle device, and the injection nozzle device is activated to eliminate the abnormal particles outside the standard light amount value to a place outside the falling trajectory of normal particles using the jet from the injection nozzle device. It is a color sorter.

By the way, during the sorting action of the different-colored particles, the dust that separates from the different-colored particles and floats as the different-colored particles are blast-sorted out adheres to the light source and attenuates the amount of light, causing the different-colored particles in the granules of the light-receiving element to be removed. Particle detection becomes inaccurate, leading to a decrease in sorting accuracy, but in the present invention, the light source is equipped with a separate cleaning device, so the cleaning body that comes into contact with the light source removes dust and other particles whenever necessary. The cleaning device always irradiates the particles with a uniform amount of light, and even if the cleaning device is operated during the sorting operation, it does not affect the reference color plate or the light receiving element, so the highly efficient and highly accurate sorting operation can be maintained for a long time. It can be carried out continuously for hours.

Example Embodiments of the present invention will be described based on FIGS. 1 to 3.

In FIG. 1, the lower part of the feed hopper 1 is connected to a vibrating feed gutter 2 equipped with an electromagnet 3, and the particulate discharge part of the feed gutter 2 is connected to a falling gutter 4 to form a raw material feed part. Inside the sorting chamber 5, there are light source supports 7, 7 on the upper partition wall 6 (see Fig. 2).
is suspended, and a light source 8 consisting of fluorescent light 18A is mounted on a support stand 7.7.
8 is fitted. Flowing 1! Sorting chamber 5 from the lower end of M4
A reference color plate 12 rotatably supported on a support shaft 11 having a lever is placed behind a transparent wall 10 attached to the side wall 9 of the sorting chamber 5, facing the falling trajectory A of the particulate matter flowing into the air. A reference color adjusting plate 13 is provided through the side wall 9 so as to be freely accessible. A transparent wall plate 16 is attached to the side wall 15 of the sorting chamber 5 on the opposite side of the reference color plate 12, and a lens barrel 17 having a lens and a slit inside is disposed on the rear surface.
The light receiving element 16 is attached to the end of the lens barrel 17 and the light source 8.
A light amount adjusting plate 14 that can be freely entered and removed is installed between the two.

A fine product discharge pipe 19 is arranged on an extension line of the flow trajectory A,
While fixing the discharge tube 19 to the bottom wall 20 of the sorting chamber 5,
The injection nozzle device 21 is attached to the discharge pipe 19 in relation to the flow trajectory A, the bottom opening 22 of the sorting chamber 5 is used as the unusual particle discharge port 23, and the lower end of the flow gutter 4 and the upper end of the fine product discharge pipe 19 are connected. A mountain-shaped partition wall 25 having a through hole 24 through which particulate matter flows is horizontally installed between the separation walls 25 and 25. The upper part of the sorting chamber 5 divided by the partition wall 25 is used as the photoelectric detection part 26, and the lower part is used as the particle sorting part 2. Form.

The light source 8 suspended from the upper partition wall 6 has a ring receiver 28 fixed to the light source support stand 7 (see FIG. 3), and the ring receiver 28 is fixed to the light source support 7 (see FIG. 3). ! 8
The end of A is inserted into the socket 30, the socket 30 is inserted into the rotating ring 29 and fixed, and the rotating ring 29 is rotatably inserted into the ring receiving ring 28. A rotating shaft 35 is installed on the light source support base 7°7, and a plurality of blades made of an elastic material such as rubber are attached to the rotating shaft 35 as a cleaning body 34 so as to contact the outer peripheral surface of the fluorescent light 8A. A driving gear 38 is attached to an operating shaft 37 to which a handle 39 is fixed at the end, and the operating shaft 37
is a passive small gear 36 that is mounted on the light source support stand 7 and the side plate 42 of the sorting chamber 5, and is pivoted on the rotating shaft 35, and a rotating ring 29.
The cleaning device 40 is formed by meshing with a driving gear 38 and a passive large gear 33 fixedly attached to the cleaning device 40 . 32 is the light source support stand 7
The light receiving element 18 and the injection nozzle device 21 are connected to the control device 43, and 41 is the code of the light source 8. .

The operation of the above configuration will be explained below.

The mixed particles of the sorted raw material that have flowed down from the supply hopper 1 to the vibrating supply 12 flow from the discharge part of the vibrating supply gutter 2 to the downflow gutter 4 of the raw material supply part by the vibration action of the electromagnet 3, and the mixed particles of different colors flow down. The water slides down the gutter 4 and is discharged from the end of the gutter to a downward trajectory A in the air within the photoelectric detection unit 26 .

It is released on the downstream trajectory A. A light source 8 irradiates particles flowing down a flowing path A, the amount of light obtained from the particles and a reference color plate 12 is detected by a light receiving element 18, and the detection signal is communicated to a control device 43.

The light receiving element 18
When the detection signal deviates from the reference light amount value, the control device 43 issues an output signal to the injection nozzle device 21 of the particle sorting section 27, operates the injection nozzle device 21, and uses the jet to send the different color particles down the trajectory A. The different color particles are discharged outside the machine from the different color particle discharge port 23, and the normal particles within the reference light amount value flow down the flow path A and are taken out from the fine product discharge tube 19.

During the above-mentioned sorting operation, since the inside of the sorting chamber 5 is divided by the partition wall 25 into the photoelectric detection section 26 and the particle sorting section 27, the dust attached to the different color particles is separated from the particles as the injection nozzle device 21 operates. However, the dust does not flow back to the photoelectric detection unit 26, and the dust and the different-colored particles are discharged from the different-colored particle outlet 23. However, during long-term operation, the particles that are attached to the particles discharged from the lower end of the flow R4 to the flow path A are suspended due to detachment, and the dust adheres to the light source 8, causing the particles to flow down the flow path A. and reference color plate 12
The amount of light irradiated to the object is attenuated, and the accuracy of detecting different color particles by the light receiving element 18 is reduced. Therefore, the control device 43 establishes the quality of the product flowing out from the product discharge tube 19 at regular intervals or the control device 43.
When a decrease in sorting accuracy is detected using an oscilloscope or the like installed in the light source 8, dust adhering to the light source 8 is cleaned. (See Fig. 3) When the handle 39 of the cleaning device 4o is rotated, the cleaning body 34 contacts the outer peripheral surface of the fluorescent lamp 8A and rotates, and the fluorescent lamp 8A rotates with the passive large gear 33 fixedly attached. It rotates integrally with the ring 29 at a slower speed than the cleaning body 34, and when the fluorescent ff18A rotates once, the locking piece 31 fixed to the rotary ring 29 locks on the stopper 32, and the handle 39
rotation is restrained. Next, when the handle 39 is rotated in the opposite direction and the locking piece 31 comes into contact with the stopper 32 again, the dust adhering to the fluorescent light is completely cleaned and removed, and the light source 8 irradiates the normal amount of light into the charge sorting section 26 to ensure a good condition. Adjusted to sorting conditions. During the cleaning of the light source 8, the cleaning body 34 moves the particles flowing down the flow trajectory A, the reference color plate 12. Light receiving element 1
8, and the cleaning device 40 can be operated even during the particle sorting operation, which is different from conventional devices that require temporary interruption of raw material supply. In addition, since the light source is placed inside the sorting chamber 5, it is easy to dissipate heat, and there is no heat-generating device installed at the location where the light receiving element is placed, so the light receiving element can work accurately. be. The light intensity of the light source 8 and the reflected light intensity of the reference color plate 12 can be adjusted to be optimal for the raw material particles to be sorted by adjusting the entry and exit of the reference color adjustment plate 13 and the light intensity control plate 14 into and out of the photoelectric sorting section 26. By doing so, the reference color plate 12 can be finely adjusted by operating a lever to adjust the inclination angle of the reference color plate 12. In addition to the cleaning device described above, a cleaning body that contacts the outer peripheral surface of a rotating fluorescent light may be fixedly provided.

Although the description has been made regarding only one direction in which the light-receiving element 18 and the reference color plate 12 are arranged opposite to each other, another reference color plate is provided on the light-receiving element 18 side, and another reference color plate is provided on the reference color plate 12 side. In some cases, the light-receiving elements are installed opposite each other, and in some cases, the standard color plate is made long and installed horizontally, and multiple light-receiving elements are arranged in parallel to achieve the aforementioned increase in the capacity of the sorting action. It is possible to freely choose to combine the downflow gutter, the light receiving element, and the injection nozzle device in a related manner and use them as the primary sorting section and the secondary sorting section.

Next, the configuration of the operating mechanism of the cleaning body that operates the cleaning device intermittently will be explained based on FIGS. 4 and 5.

One end of the fluorescent ff18A that forms the light source 8 is inserted into a socket 30, and the socket 30 is inserted into and fixed to a rotating ring 29, and the rotating ring 29 is connected to the light source suspended from the upper partition wall 6. It is rotatably inserted into a ring receiver 28 fixed to the support base 7.

A rotating shaft 35 is installed on the light source support base 7, a plurality of blades made of elastic material are attached to the rotating shaft 35 as a cleaning body 34, and the blades are made of a plurality of elastic materials that contact the outer peripheral surface of the fluorescent light 8Δ. A large gear 33 and a passive small gear 36 are respectively fixed to the rotating shaft 35, and the passive large gear 33 and the passive small gear 36 are meshed in relation to a driving gear 38 that is pivotally attached to a forward/reverse rotation reduction motor 44. It is. Note that the opposite end of the fluorescent light 8A is also connected to the passive large gear 33. The only difference is that the passive pinion 36 is not provided, and the other configurations are the same as the above.

The configuration of the control mechanism of the forward/reverse rotation deceleration motor 44 provided in the control device 43 is as follows: (See Fig. 5) A timer 45 with a variable set time is interposed at the power supply terminal S, and the forward/reverse rotation speed is controlled by the power supply R-3. A forward rotation electromagnetic contactor (F-MC
) and the contacts of the reverse magnetic contactor (R-MC) are interposed appropriately, and the forward rotation magnetic contactor (F-MO),
Interlock contact of reversing magnetic contactor (R-MC),
and the A contact of the unit timer (TM) are connected in series, and the interlock contacts of the reverse magnetic contactor (R-MC), the forward magnetic contactor (F-MC) and the unit timer (TM) are connected in series. The B contacts are connected in series, and each of the above connected in series and a unit timer (TM') are connected in parallel between both busbars branched from the terminal R-8.

At each time set in the timer 45, the forward/reverse rotation deceleration motor 45 is energized from the power terminal R-8, the unit timer (TM) is driven, and the forward rotation electromagnetic contactor (F-MC) is alternately activated.
) and the reverse electromagnetic contactor (R-MC) to open and close their respective contacts to rotate the forward/reverse rotation deceleration motor 44 forward or reverse. When the forward/reverse rotation deceleration motor 44 rotates forward or reverse, the driving gear 36 pivoted to the motor 44 rotates the passive large gear 33 and the passive small gear 35, causing the fluorescent light to appear! t8A is rotated at a low speed and the cleaning body 34 is rotated at a high speed, and the cleaning body 34 comes into contact with the outer peripheral surface of the fluorescent light 8A to clean and remove deposits such as dust, and there is no light intensity attenuation of the light source. It is possible to carry out a highly accurate sorting operation for a long time without reducing the sorting accuracy, and it does not require human labor.

FIG. 6 shows another embodiment of a control mechanism that automatically operates the cleaning device. Connect the output side of the device 49 to the input side - side terminal of the comparator 5o,
The output side of the light l setting device 51 that has set the reference light amount value is connected to the other input terminal of the comparator 50, and the output side of the comparator 40 is connected to the control circuit 52. A timer 53 is connected to the control circuit 52, and the output side of the circuit 52 is connected to a forward/reverse rotation deceleration motor 44 via a drive circuit 54.

With the above configuration, light 'f! The light amount irradiated from the A8 is detected by the light amount detector 49, the signal is sent to the comparator 50, and the comparator 50 compares the light amount value set in the setting device 52 with the detected light amount of the light amount detector 49, and sets the value. When the light amount value detected by the light amount detector 49 is smaller than the light amount value set in the light amount detector 51, the forward/reverse rotation deceleration motor 44 is controlled by the timer 53 from the comparator 50 via the control circuit 54.
The forward rotation speed reduction motor 44 is rotated in the forward direction for the time set in the timer 53, and the forward/reverse rotation deceleration motor 44 is rotated in the reverse direction by a signal output to the control circuit 52° drive circuit 54 for the time set in the timer 53, thereby reciprocating the fluorescent ff18A and the cleaning body 34. Then, the cleaning body 34 cleans and removes dust and the like adhering to the outer peripheral surface of the fluorescent ff18A.

7 and 8 show another embodiment of the cleaning device. Attach the fluorescent light mounting rings 57 and 57 to the light source support stands 7 and 7, and attach the rubber to the fluorescent light ff18A.

Fit the annular cleaning body 58 made of a sponge, brush, etc., and insert the fluorescent ff18A into the socket 30.
0 is fixed to the fluorescent ffi mounting ring 57. A groove wheel 55A is rotatably provided on the light source support stands 7, 7.

55B, 55C, 55D and groove wheels 56A, 56B are installed, and wires 61A, 61B are wound from a drive groove wheel 60 which is pivoted to a small motor 59 on each groove wheel 55A and 56A, each having two grooves. There is. The annular wire 62, a part of which is fixed to the locking part 58A of the cleaning body 58, is connected to the groove wheel 55A,
55B, 55G, and 55D, and a part of the annular wire 63 is fixed to the locking part 58B of the cleaning body 58, the groove wheel 56A
, 56B, and the small motor 59 rotates forward and backward to make the cleaning body 58 fluorescent! It is formed to slidably reciprocate in contact with the outer peripheral surface of t8A.

With the above configuration, when the motor 59 is started, the cleaning body 58 becomes fluorescent due to the rotation of the groove wheels 55A and 56A!
It touches the outer peripheral surface of 18A and moves in a sliding manner, and the fluorescent ff1
This is to clean dust etc. attached to the outer peripheral surface of 8A.
In this embodiment, either the control l1 mechanism shown in FIG. 5 or FIG. The device may be moved in a sliding manner, and if the fluorescent lamp is rotated together with the sliding movement of the cleaning body 58, the cleaning effect will be further improved.

Effects of the Invention As explained above, the present invention uses a cleaning body that comes into contact with the fluorescent lamp of the light source to clean the dust and the like that adheres to the outer peripheral surface of the fluorescent lamp and attenuates the light intensity, so that the light intensity is always uniform due to particulate matter and the like. By irradiating the reference plate, it is possible to carry out a highly accurate and highly efficient sorting operation for a long period of time, and it has various effects such as achieving labor savings and allowing the cleaning device to operate without interrupting the sorting operation. It is something.

[Brief explanation of drawings]

Fig. 1 is an overall view showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main part of Fig. 1, Fig. 3 is a perspective view showing the configuration of the cleaning device of the present invention, and Fig. 4 is a cleaning device. FIG. 5 is a circuit diagram showing the control mechanism of the cleaning device, FIG. 6 is a block diagram showing another embodiment of the control mechanism of the cleaning device, and FIG.
8 and 8 are views of another embodiment of the cleaning device. 1... Supply hopper 2... Vibrating supply gutter 3...
・Electromagnet 4... Downstream gutter 5... Sorting room
6... Upper partition wall 7... Light source support stand
8...Light source 8A...Fluorescence ffi 9
... Side wall 10 ... Transparent wall body 11 ... Fulcrum shaft 12 ... Reference color plate 13 ... Reference color adjustment plate 14 ... Light amount adjustment plate 15 ... Side wall 16 ...
Transparent wall plate 17... Lens barrel 18... Light receiving element 19... Precious product discharge tube 20... Bottom wall
21... Injection nozzle device 22... Bottom opening 23... Different color particle outlet 24... Through hole
25... Mountain-shaped partition wall 26... Photoelectric detection section
27... Particle sorting section 28... Ring receiver
29...Rotating ring 30...Socket 31
... Locking piece 32 ... Stopper 33 ... Passive large gear 34 ... Cleaning body 35 ...
・Rotating shaft 36... Passive small gear 37... Operating shaft 38... Drive gear 39... Handle 40.
...Cleaning device 41...Code 42...Side plate 43...Control device 44...Forward/reverse rotation deceleration motor 45...Timer 46...Main coil
48... Auxiliary coil 49... Light amount detector
50... Control circuit 53... Timer 54
...Drive circuits 55A, 55B, 55C, 55D...
Groove wheel 56A, 56B... Groove wheel 57... Fluorescent light mounting ring 58... Cleaning body 58A, 58B... Locking part 59... Small motor 60... Drive groove wheel 6
1A, 61B... Wire 62... Annular wire 63... Annular wire R-3... Power terminal F-MC... Magnetic contactor for forward rotation R-MO... Magnetic contactor for reverse rotation TM ...Unit timer

Claims (6)

[Claims] (1) A light source consisting of a reference color plate, a jet nozzle device, a light receiving element, and a fluorescent light is provided near the trajectory of particles mixed with different colors flowing down from the raw material supply section in an orderly manner, and the particles flow down along the trajectory. The amount of light emitted from the light source and the amount of light from the reference color plate are detected by a light receiving element, and based on the detection signal, the different color particles are discriminated and the injection nozzle device is operated to remove the different color particles. In the color sorting machine for sorting, a cleaning body of a cleaning device for cleaning dust, etc. that adheres to the fluorescent lamps and reduces the amount of light is installed so as to be in relative contact with the outer peripheral surface of the fluorescent lamps. A light source cleaning device for a color sorter. (2) A light source cleaning device for a color sorter according to claim (1), wherein the fluorescent light is rotatably mounted. (3) The light source cleaning device for a color sorter according to claim (1), wherein the cleaning body is rotatably formed in contact with the outer peripheral surface of the fluorescent light. (4) A light source cleaning device for a color sorter according to claim (1), wherein the cleaning body is slidably formed in contact with the outer peripheral surface of the fluorescent light. (5) A timer is connected to the cleaning body drive mechanism so that the cleaning device operates intermittently. A light source cleaning device for a color sorter as described in the above. (6) Claim (1), wherein the cleaning device is electrically connected to an illuminance detector that detects the illuminance of the light source so that the cleaning device is activated when the illuminance of the light source decreases.
The light source cleaning device for a color sorter according to any one of Items 1, 3, and 4.