Belt Color Sorters FAQs Guide
METKEY Belt Color Sorter, also called Track-type Color Sorter, is an advanced color sorting machine with horizontal transfer belts.
METKEY Belt Color Sorter sorts help to improve the quality of foreign materials by collecting, analyzing, and identifying the material color, size, and shape differences.
Graphic: Belt Color Sorter for Grains Sorting
METKEY Belt Color Sorter is an ideal sorting solution for light, irregular, fragile materials and it is widely applied to Nuts, Cashew, Almond, Pistachio, Sunflower Seeds, Watermelon Seed, Raisin, Lyceum Chinese, Jujube, Cotton Seed, Chili, Shrimp Skin, Ore, Coal, Salt, Sugar, Glass, Plastic, Pearl, Pill, Gum, Industrial products, etc.
METKEY Belt Color Sorter has three indicators measure the quality:
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Sorting Capability
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Sorting Precision
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Carryout rate
METKEY Belt Color Sorter is able to support approximate capacity from 1.2 to 1.8 tons for regular grains but totally depends on the nature of the material. Sorting precision is beyond the expectation of approximately 99.9%. The carryout rate of METKEY Belt Color Sorter is over 15:1 (good: bad).
The voltage rating for European markets is 220Vac and American markets are 240Vac.
On the other hand, you can customize any rated voltage of color sorters to meet your local markets’ requests.
Features
The featured belts are used to transport objects to be screened to the image acquisition area.
Graphic: Belt Color Sorter for Nuts Sorting
High Definition CCD Camera– Collecting a high range of material Red, green blue color detection with high resolution.
High Definition Sensor– Sensor uses DSP+FPGA, linear screening technology to differentiate in different colors.
Ejector Assembly– Helps to improve accuracy level, defective product rejection efficiency. METKEY is adopting the solenoid valves which support high-frequency sorting.
METKEY Belt Color Sorter has two opposite sorting modes: Normal Sorting and Invert Sorting.
Normal sorting mode – used to separate good grains from the raw foreign mixture containing a lower proportion of impurities.
Invert sorting mode – Also used to pick out the good grains from the original mixture containing a higher proportion of impurities.
Advantages:
Damage Rate is Low
During the process of transporting the tracked product to the sorting area, the product remains relatively stationary between the track and the track, thereby reducing collisions between the products and reducing breakage.
Lightweight product screening
The crawler has a wide range of applications. The most unique advantages are lightweight product screening to sort light things.
The selection rate is high.
The belt conveys the material smoothly and steadily. The material is not embossed for color recognition while reducing the takeout rate.
Irregular products screening
METKEY Belt Color Sorter help to sort products with large volumes as well as irregular shapes products, However, the chute color sorter is designed according to the shape and size of the product, so the range of screening is relatively narrow.
How does it work?
METKEY Belt Color Sorter is equipped with a high-resolution camera, an advanced color detector that diagnoses color differences with accuracy.
Graphic: Belt Color Sorter for Ore Sorting
According to the different color selection of materials, detecting the colors of the granular materials that pass before them, and using mechanical or pneumatic ejection devices to divert the material whose colors do not fall within the acceptable range.
According to the color combination of material, collecting, analyzing, identifying, and separating from raw material is the workflow of METKEY Belt Color Sorter.
Raw materials are transported on the belt from one side to another side after leaking from the hopper.
When the materials arrive at the end of the belt, they would be imaged by high-speed CCD cameras.
Meanwhile, the sensors are analyzing the images and sending out a signal of acceptance or rejection.
When the CPU receives the signal from the sensors, it controls ejectors to open or close the nozzles.
Where all the material that does not meet pre-set criteria is removed and the acceptable material will be sent to going out for packaging during this process.
The color separator is used to choose a specific color, with a single track color separator or double track color separator.
Structure
METKEY Belt Color Sorter has Double-Layer Design and Single-layer Design. Various Structure Designs are developed to meet different screening needs.
METKEY Belt Color Sorter diagnoses defective particles with a high-resolution CCD digital camera. CCD sensor used for color sorting, material sorting, and shape sorting.
The difference is that two layers structure allows double sorting programs to be performed at the same time.
Graphic: Single-Layer Belt Color Sorter
In the actual application process, the upper layer can roughly filter the materials, while the lower layer selects or classifies the materials.
Both Types of Color Sorters have an external operation interface. This device can be easily controlled through this operating platform. Includes start, close, color process selection, and more.
The METKEY Belt Color Sorter requires a separate support platform and lift machine during installation.
The support platform lifts the machine to a certain height, which makes it easy to collect materials.
Lifting the machine will transport the material that needs to be recycled through the corresponding feed port.
METKEY designs color sorters according to the nature of materials and requirements of the market.
For example, ore color sorting machine, pepper color sorting machine, corn color sorting machine, and so on.
Even though most of them have a little different structure, but they also have some common features.
METKEY Belt Color Sorter consists of some core components include an operating system, image acquisition system, image analysis system, screening system and etc.
Specifically, it includes a hopper, Vibratory Feeder, transfer belt, CCD camera, LED light, ejector, and air compressor.
Material Hopper
METKEY Belt Color Sorter’s material hopper is made of #304 stainless Steel that is food-grade materials. #304 stainless steel can touch the food directly according to CE and CA65 standards.
METKEY provides a material hopper with a fast, clean, and simple structure with an easily removable polycarbonate hopper.
Vibratory Feeder
Vibratory Feeder on the METKEY Belt Color Sorter is usually used to ensure the sorted grain evenly arrives at the chutes without any overlap.
METKEY unique vibratory feeder has a big characteristic that vibration is even and frequency is stable, which could make sure all raw material drops from the feeder evenly and form a layer of waterfall flow.
Transfer Belt
The track is made of PVC that meets food safety requirements.
Its main function is to transfer the material level to the candidate area.
In this process, it is necessary to ensure that there is no mutual collision between the materials and damage.
Also ensure that the material speed is constant, which is good for camera capture.
As a result, the surface of the conveyor belt is designed to be textured, which ensures that the material moves with the conveyor belt and that there is no collision between the materials.
The width of the conveyor belt and the quick freezing of the conveyor are specific, which also helps the camera to capture the material.
CCD Camera
with High Revolution Sensor High-Speed CCD Linear array Cameras take photos for the accelerated grains and the recognition accuracy up to 0.08mm.
A High-Resolution sensor could quickly and exactly recognize the 0.01mm2 defects.
LED Light
The LED light provides a very good fill light for imaged products and it is installed in front of the shooting area. In order to improve the images’ sharpness, METKEY adds in a row of cold LED light, which is a benefit for identification.
Ejector
The ejector is a solenoid valve for color sorters.
It is made of high-strength alloy material.
It has strong suction, no residual magnetism, and outputs linear airflow to the outside.
It is able to accurately strike rejected materials and significantly reduce the take-up ratio.
High-speed mini ejectors help to improve sorting activities with reliable network transmission.
The working frequency is above 1200hz per second, the fastest response time is within 0.6ms;
the service life is 5-10 billion times.
After receiving the digit signals from the CPU, the ejectors respond quickly and release the compressed air.
The air would change the rejected or accepted products’ movement routes, which separates the bad or good grain from the raw materials.
METKEY selects a powerful and precise nozzle with a 4.75MM port size.
Air Compressor and Filter
Air compressor allows to continuously provides compressed air.
It is always required to work together with an air filter.
And the air filter quickly filters out solid impurities in the compressed air, which helps to bring out rejected products.
In order to increase the accuracy of the sorting, we adopt the original SMC air filter.
It is a safe and stable color sorting machine.
METKEY has a 10-year of manufacturing experience as a color sorter, and we can manufacture 100 pieces of grain color sorter each month.
Regularly, we can arrange the delivery in 10 days.
Every METKEY Belt Color Sorter is required to do 100% performance testing before packing, which ensures all functions are good.
Meanwhile, we would organize a professional engineer team to provide free on-site installation, operation training, and 24 hours online troubleshooting.
Installation & Customization:
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Our team is responsible for Site Installation and our professional engineer provides proper training.
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Come and spend time in our factory to understand the belt color sorter mechanism of working.
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Contact us any time via Telephone, Email, Video call and get a technical solution to your problems.
METKEY Belt Color Sorter helps to protect the operator from danger, the auto-notification system stops the machinery to avoid great loss.
All METKEY Color Sorters have been approved by CE and CSA.
Meanwhile, we provide 2 years warranty and lifetime accessories Supports. Features of Belt color sorter
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Advance processing technique provides highly efficient sorting.
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Smart LED cold light helps to identify the products precisely without shadow.
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High-speed CCD image sensor to identify the fine or bad material.
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Reasonable cost, linear flow, and strong sucking ability.
