JPS6322195B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a heating device for a color sorter.

The requirements for the sorting accuracy and sorting efficiency of a color sorting machine are to maximize the velocity of grain particles flowing down the sorting down trough and to minimize the grain bundle cross-sectional area of the particles.

In a normal downflow gutter, the moisture held by the particles and dust flowing down may condense on the sliding surface inside the gutter, or
Dust adheres to this and acts as a resistance to the flow of particles, stalling the particles and causing them to flow in the form of scattering, reducing the degree of sorting. It is necessary to prevent dew condensation and dust from sticking.

Next, a heating device for a conventional color sorter will be explained with reference to FIG. A vibrating grain feeding trough 3 equipped with a vibrating device 2 is installed on the upper wall of a vertical box-shaped machine frame 1, and a feeding hopper 4 is mounted on the feeding side thereof to form a grain feeding device 5. A photoelectric detection device 6, an injection nozzle device 7, and a grain collecting cylinder 8 are installed on the lower side inside the machine frame 1.
A photoelectric sorting chamber 10 equipped with a different-color grain discharge port 9 is permanently installed, and the sorting chamber 10 and the gutter end of the vibrating grain feeding gutter 3 fixedly installed on the upper part of the machine frame 1 are connected by an inclined flow gutter 11. At the same time, since an electric heater 12 such as a heater is attached to the gutter wall of the downstream gutter 11, the electric heater 1
2, when the downflow gutter 11 is heated, the hot air diffuses into the interior of the color sorting machine, infiltrates the control device located inside the machine, heats the semiconductors in the internal electric circuit, and causes malfunction. In addition, in cold weather, moisture evaporated from the gutter surface condenses on indoor electrical equipment, causing dust to adhere to the machine surface and causing problems such as electrical leakage.

In view of the above-mentioned points, the present invention includes fitting and covering the downflow gutter inside a heat-retaining gutter tube, providing a heating chamber in the gutter tube, and connecting the gutter tube to the heat-retaining gutter tube so as to allow ventilation. At the same time, by housing the power supply section of the photoelectric separation chamber inside the heat chamber, the hot air generated in the power supply section is guided to the heat-insulating gutter tube to warm the downstream gutter, thereby preventing the above-mentioned occurrence of dew condensation in the downstream gutter. In addition to preventing the adhesion of dust, the gutter tube prevents the hot air that warms the gutter and the steam evaporated from the gutter from dispersing to the surroundings, and failure of the electrical equipment provided in the control device described above. This device prevents this from occurring, effectively utilizes the thermal energy generated in the power supply section to carry out efficient sorting, and also maintains the highest sorting accuracy and efficiency at all times with a heating device with a simple structure. We aim to develop and provide this service.

The present invention will be explained with reference to embodiment figures. In FIG. 1, reference numeral 13 denotes a heat-retaining gutter tube in which a downflow gutter 11 is inserted and housed, a photoelectric sorting chamber 10 is installed in the lower half of the gutter tube 13, and a grain feeding device is installed in the upper end of the gutter tube 13. 5 are connected to each other to integrally form a sorting cylindrical body. A grain feeder 3 is installed, and a photoelectric sorting room 1 is installed.
0, a light source 14, a light receiving element 15, and a reference color plate 16 are arranged in relation to each other around the flow path A of the grain bundle flowing out from the flow gutter 11, and the inside of the gutter tube 13 below. The injection nozzle device 7 is arranged at
Further, a grain collection tube 8 is fixedly installed on the extension line of the flow path A, and a unique grain discharge port 9 is opened at the lower end of the gutter tube 13. A heating chamber 17 is provided in the heat-retaining gutter tube 13, and a ventilation window 18 is provided to allow mutual ventilation.
The power supply section 19 of the photoelectric sorting chamber 10 is housed inside the heat chamber 17.
The power supply unit 19 is composed of a stabilized power supply circuit, a drive circuit for the injection nozzle device, a transformer, and the like. 20 is the heating chamber 17
It is a pillar installed in the

With the above-mentioned configuration, particles mixed with different color grains of the raw material flowing down from the supply hopper 4 to the vibrating grain feeding trough 3 flow down the lower downflow trough 11 due to the vibration action of the vibration device 2, and flow into the photoelectric sorting chamber 10. The liquid flows out in a flight shape along a predetermined flow trajectory A. The sorting room 10
Inside, a light-receiving element 15 receives reflected light from the different-color particles and emits a signal, and the detection signal causes the spray nozzle device 7 to operate and spray air at a timely manner. Due to the blast action, the different colored particles are separated from the flow trajectory A, and the separated particles flow down from the different color particle discharge port 9 and are removed, and the regular particles flowing out along the flow trajectory A are left as they are in the grain collecting pipe. 8 and taken out of the machine for the next process. Meanwhile, the heating chamber 1
Each device in the power supply section 19 installed in the power supply section 7 generates heat, and the hot air (approximately 70 degrees Celsius) flows into the heat-retaining gutter tube 13 through the ventilation window 18 and flows into the downstream gutter fitted inside the gutter tube 13. 11 is heated, the occurrence of dew condensation and the adhesion of dust in the above-mentioned down-flow gutter are prevented, and the hot air or steam emanating from the gutter surface is prevented from scattering to the surroundings by the heat-retaining gutter tube 13. Infiltration of hot air or steam into the control device, etc. is eliminated, and the above-mentioned problems such as malfunctions caused by heating semiconductors, adhesion of dust caused by dew condensation in electrical equipment, and electrical leakage are completely prevented.

According to the second aspect of the present invention, the heat-retaining gutter tube 13 is a cylindrical tube made of aluminum material 21, so it is easy to manufacture, improves airtightness, and makes the device lightweight. It has the effect of being able to be converted into

According to the third aspect of the present invention, the heating heat chamber 17 is provided with a ventilation fan 22, so that the amount of air can be increased to cool the power supply unit, and the hot air can be forced into the heating chamber 17. It has the advantage that it can be supplied to the gutter pipe 13 and perform an efficient heating action.

Claim 4 provides that the heating heat chamber 17 has a dust removal filter 2 in its air supply window 23.
4, each device inside the heat chamber 17 can be cleaned with purified air.

In this way, the heating device of the color sorter of the present invention is
The heating device has a simple structure, can completely avoid the above-mentioned drawbacks that occur with the conventional device in which an electric heater is installed in the downflow gutter, can effectively utilize the thermal energy generated in the power source to carry out an efficient sorting operation, and has a simple structure. This makes it possible to reduce the size of the entire apparatus, and also to maintain the highest sorting accuracy and efficiency at all times.

[Brief explanation of drawings]

The drawings are illustrations of embodiments of the present invention. FIG. 1 is a partially cutaway side view of the present device, and FIG. 2 is a side view of the conventional device. 1... Machine frame, 2... Vibrating device, 3... Vibrating grain feeder, 4... Supply hopper, 5... Grain feeding device, 5A
... Box frame, 6 ... Photoelectric detection device, 7 ... Injection nozzle device, 8 ... Grain collection cylinder, 9 ... Different color grain discharge port, 1
0... Photoelectric sorting room, 11... Downflow gutter, 12... Electric heater, 13... Heat retention gutter tube, 14... Light source, 15
... Light receiving element, 16 ... Reference color plate, 17 ... Heat chamber for heating, 18 ... Ventilation window, 19 ... Power supply section, 20
...Strut, 21...Aluminum material, 22...
Ventilation fan, 23...Air supply window, 24...Dust removal filter.

Claims (1)

[Scope of Claims] 1. Particles mixed with different color grains are allowed to flow down from a grain feeding device through a down-flow gutter, and a photoelectric sorting chamber consisting of a photoelectric detection device and an injection nozzle device is provided around the flow trajectory of the grain bundle to separate the different color particles. In an apparatus for sorting out water, the downflow gutter is fitted and covered inside a heat-retaining gutter tube, a heating chamber is provided in the gutter tube, and the gutter tube is connected to the inside of the heat-retaining gutter tube so as to allow ventilation. A heating device for a color sorting machine, characterized in that a power supply section of the photoelectric sorting chamber is housed inside a heating heat chamber. 2. The heating device for a color sorter according to claim 1, wherein the heat-retaining gutter tube is a tube made of aluminum material. 3. The heating device for a color sorting machine according to claim 1 or 2, wherein the heating heat chamber uses a ventilation fan in combination. 4. The heating device for a color sorter according to claim 1, 2, or 3, wherein the heating heat chamber is provided with a dust removal filter on its air supply window.