CSG™ Color Sorter

Optical Sorting Solutions


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    Color Sorting / Shape Sorting / Size Sorting / Materials Sorting / Optical Sorting

  • Optical Sorting Machine

    Focus on Sorting Technology for 30 Years

    Provide OEM customized sorting solutions for your business



COLOR SORTER also named color sorting machine, color sorter machine or optical sorting machine, it is according to the color differences of granular materials, using high-resolution CCD optical sensor to drive solenoid valve to sorting different granular materials.

CSG Color Sorter has been widely used in many industry in the world. Such as agricultural products, food and mining industries, The most common use is sorting rice, wheat, corn, peanut, a variety of beans, seeds, tea, herbs, dried vegetables, recycled plastic, salt and ore etc

Color Sorter machine


Chute Type Color Sorter Machine

64 Channels Color Sorter

64 Channels Sorting Machine

1 chute 64 channels color sorter

128 Channels Color Sorter

128 Channels Sorting Machine

2 chutes 128 channels color sorter

192 Channels Color Sorter

192 Channels Sorting Machine

3 chutes 192 channels color sorter

256 Channels Color Sorter

256 Channels Sorting Machine

4 chutes 256 channels color sorter

320 Channels Color Sorter

320 Channels Sorting Machine

5 chutes 320 channels color sorter

384 Channels Color Sorter

384 Channels Sorting Machine

6 chutes 384 channels color sorter

512 Channels Color Sorter

512 Channels Sorting Machine

8 chutes 512 channels color sorter

640 Channels Color Sorter

640 Channels Sorting Machine

10 chutes 640 channels color sorter

768 Channels Color Sorter

768 Channels Sorting Machine

12 chutes 768 channels color sorter

technology innovation for Chute Color Sorter

Chute Color Sorter

Apply to sorting: Rice, Wheat, Corn, Maize, Millet, Sorghum, Quinoa, Buckwheat, Oats, Barley, Cardamon, Sesame Seeds, Groundnut, Peanut, Soybean, Coffee Bean, Pea, Mung Bean, Lentil, Vicia Faba, Fava Bean etc.

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technology innovation for Multilayer Color Sorter

Multilayer Color Sorter

Apply to sorting: Tea, Dehydrated Vegetables, Herb, Dried Flower, Leaf Products etc

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technology innovation for Belt-type Color Sorter

Belt-type Color Sorter

Apply to sorting: Nuts, Cashew, Almond, Pistachio, Sunflower Seeds, Watermelon Seed, Raisin, Lycium Chinense, Jujube, Cotton Seed, Chili, Shrimp Skin, Ore, Coal, Salt, Sugar, Glass, Plastc, Pearl, Pill, Gum, Industrial products etc.

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Excellent performance with reasonable price.

Focusing on sorting technology, with more than 30 years of industry experience, annual production capacity of 5,000 color sorter.

China's first ccd color sorter manufacturer and pioneer. Subordinate body of United Nations (U.N.)is our client, it's strict procurement process can prove our product quality and service.

10 Billion Times
Color Sorter Export to world


Export to 60+ countries

CSG have more than 500 employees


300+ Employees

CSG have many patents for invention


Patent for Invention

CSG production capacity


Production Capacity(sets)


World leading sorting solutions for different products

rice color sorter

Rice Sorting

rice optical sorting machine

bean color sorter

Bean Sorting

bean optical sorting machine

corn color sorter

Corn Sorting

corn optical sorting machine

wheat color sorter

Wheat Sorting

wheat optical sorting machine

peanut color sorter

Peanut Sorting

peanut optical sorting machine

nuts color sorter

Nuts Sorting

nuts optical sorting machine

tea color sorter

Tea Sorting

tea optical sorting machine

seeds color sorter

Seeds Sorting

seeds optical sorting machine

vegetables color sorter

Vegetables Sorting

vegetables optical sorting machine

salt color sorter

Salt Sorting

salt optical sorting machine

ore color sorter

Ore Sorting

ore optical sorting machine

plastic color sorter

Plastic Sorting

plastic optical sorting machine

CSG is dedicated to continuously improve our service levels and help our customers through the entire sorting project planning and implementation process. Our primary goal: to meet and then exceed our client's expectations.

  1. Chute's maintenance. When cleaning the chute, please do not use hard or sharp objects to prevent scratching the channels. For dust on the surface, you can use a dust cleaning air gun to clean it. The dust stuck to the chute can be wiped with a soft cotton cloth.
  2. Maintenance and replacement of the cleaning brush. The cleaning brush must be replaced and calibrated regularly, otherwise it will affect the cleaning quality.
  3. Whether there is dust in the sorting room glass. If there is a lot of glass dust in the sorting room, the effect of the sorting will be affected. You can use a cotton cloth to wipe, or dipped a little alcohol on the cotton cloth to wipe, the air valve must be closed before wiping.
  4. Maintenance of touch screen. When removing dust from the touch screen of a color sorter, you can use a soft cotton cloth to gently wipe it, or use a dust-cleaning air gun to blow the dust on the surface gently. Do not use an air gun to blow the touch screen surface directly, otherwise the surface will be damaged by excessive force.
  5. Clean the dust outlet. The dust removal port must be cleaned regularly, once a week to prevent the dust removal filter from being blocked by dust for a long time, which is not conducive to dust removal and affects the separation effect.
  6. Air valve maintenance. Due to environmental dust, moisture in the air, etc., foreign objects caused by the solenoid valve spool cause air leakage. There are two ways for general users to solve the problem on the spot: find out which nozzle is leaking, perform high frequency test on the nozzle in front of it, or use high pressure gas to directly blow the solenoid
  7. Change the air filter regularly

1. Installation Cautions
1.1. The sorting machine should be installed on a horizontal plane, and no anchor bolts need to be buried. Machine must have a good grounding, with the bar at the grounding terminal to get into the ground for at least 50 cm.Installation should be made in well-ventilated places rather than places of low or high temperature, or with high humidity or many dusty.
1.2. Pay attention to prevent electromagnetic interference on the scene or in the vicinity, such as from electric welders or high frequency transmitters.Static interference from nearby static sources should be avoided. For this reason, the feed pipes and exhaust tubes used by customers must be made of iron, rather than plastics or other non-metallic materials.
1.3. Don't expose color sorters to sunlight or light emitted from lighting equipment, so as to avoid its interference with light sources of color sorters.

2. Unpacking and Inspection
After receiving the machine, unpack it carefully to avoid any damage to it; check the quantity of parts according to the packing list and keep it safe.

3. Installation
3.1. The Device should be placed on a enclosed solid platform or a hard ground (with the platform around 2.0 meter from the ground). the installed machine should be leveled with a leveling instrument to adjust the levelness of the machine to 2/1000 mm or below. a passage of more than 50 cm on each side should be made so as to facilitate the operation, inspection and maintenance.
3.2. According to actual applications on the scene, the feed inlet at the upper side should match the customers' feed pipes, and a flow control plate and a storage tank should be installed at the passageway, pay attention not to overlay feed tubes on feed hoppers so as to avoid vibration and adversely affect sorting results, two pipes should be installed at outlets to convey qualified goods and inferior goods obtained through first and secondary sorting operations respectively.
3.3. Users may need to install a lifter according to actual application on the scene by referring to the installation instructions.

4. Installation of Electrical Components
4.1 Warning: Users are required to strictly follow the circuit wiring instructions or precautions, so as to avoid personal injuries or electrical shock.
4.2. Users are required to offer a three-phase AC 380V ± 5% power supply (for air compressors), and a single-phase 220V ± 5% power supply with good grounding wires.
4.2.1. Power Supply for Sorting Machine.
A 20A or above air switch should be installed at the inlet of power supply wires (knife switches undesirable); the power supply should be 220V ± 5% (single-phase AC, 50/60 Hz).
4.2.2. Power supply for Air Compressor.
Air compressor should be installed at a place near to the sorting machine, with the pipe not farther than 10 meters in length; based on the actual application on the scene, an air switch of three-phase (380V) 60A should be installed.
4.3. In order to avoid interference and lightning, separate grounding wires with good grounding performance should be connected to the machine, with the grounding terminal getting into underground for 50 cm.

5.Installation of Air Supply
5.1. Users must use a water and oil-free air compressor, and install a water filter.
5.2. Screw type air compressor must be fitted with an oil filter, with the air components connected with each other with 25mm diameter galvanized pipes or pipes of higher classes (such as PPR pipes).
5.3. It is recommended to install the air system equipment at an insulated rooms near to the sorting machine (no more than 15 meters), thus reducing noise while offering adequate pressure.

6.Installation of Dust Collection Pipes
Users must install dust collection pipes to avoid the accumulation of ashes in the enclosed chamber, affect the sorting effect.

Chapter 1: How to sort products by machine

With the progress of society and the development of science and technology, robots have begun to enter the production process and daily life. Various types of sorting machines are playing an increasingly important role in specific working environments. Common solid sorting equipment can perform sorting according to the different physical and chemical properties of the product. Such machines are often fully automatic sorting equipment. You can choose different sorting machines according to your needs

Chapter 2: How color sorter machine works

Color sorter machine is mainly composed of a feeding system, an optical detection system, a signal processing system and a separation execution system. A device that automatically sorts out heterogeneous particles in granular materials based on the differences in optical characteristics of the materials. The selected materials enter the machine from the hopper on the top, and the selected materials are transmitted along the channel through the vibration of the vibrator device. Enter the observation area in the sorting room and pass between the sensor and the background board. Under the action of the light source, according to the intensity of the light and the color change, the system generates an output signal to drive the solenoid valve to blow out different-colored particles to the waste hopper, and the good selected materials continue to fall to the finished hopper, thereby achieving the purpose of sort.

Chapter 3: Installation and commissioning of color sorter machine

The optical color sorter must be installed at an overall level. It should be installed in a place without vibration to avoid vibration and reduce the accuracy of color selection. Do not install the color sorter in a place where it can be directly exposed to sunlight, as it will affect its photoelectric system to collect signals. Do not install the color sorter in a humid, hot, dusty place. If possible, install it in a separate and isolated room, and install air conditioning maintenance. As for the color sorter commissioning, senior engineers generally need to work on site, because work experience and professional knowledge are required.

Chapter 4: Repair and maintenance of color sorter machine

Open the upper and lower sorting boxes, and clean the inside of the upper glass, the surface of the lower light source, the lens of the lower camera, the double-sided double-sided lower camera reflector and its lens, and clean the high-precision parts of the camera. To be careful and slight, consider using a cotton ball alcohol to wipe off the dust, and finally close the sorting box cover tightly. Check whether there are screws inside or outside the machine, and the terminals are loose, such as the screws near the vibrator and the terminals in the sorting box. For greaseable bearings, consider adding butter. For the wearing parts, if the small belt of the cleaning brush is worn out, you need to consider whether to replace it. Test each valve. If abnormal, repair or consider replacing the solenoid valve. Depending on the conditions of use, the use time of the filter element varies, and it is generally replaced once a year.

Chapter 5: Technical parameters of color sorter machine

RGB full color tri-chromatic CCD image acquisition system. High camera resolution 5340 pixel identifying tiny defects up to 0.01mm2. High quality ejector with 5-10 billion ejections life low air consumption. Most unique intelligent LED with cold shadowless light source and super long life span, high lighting efficiency. Strong industry-grade digitization processor, image acquisition and processing in high speed, consistency of signal path and signal reliability is secured. International high-end full-color line scan technology, DSP+FPGA processing the international forefront of technology, combining a variety of colors and shapes model complex algorithms, to provide "color selection shape selected" function for different materials.

Chapter 6: Application of color sorter machine

The automatic color sorting machine can directly replace the manual sorting work to achieve the purpose of improving production efficiency, improving accuracy and reducing labor, and reducing enterprise operating costs and labor costs. The automatic sorting machine can select product combinations with different weights, sizes, colors and other characteristics to select the working line, eliminating the financial and time of manual operation, and more accurate and precise. Widely used in food sorting, fruit sorting, food sorting, ore sorting, garbage sorting and other industrial product sorting industries.

Chapter 7: Factors for evaluating color sorter machine

The main purpose of the color sorter is to select high-quality materials. Therefore, the net selection rate is one of the main technical indicators for evaluating the performance of the color sorter. The rejection rate refers to the ratio of the heterogeneous particles removed from the material to the heterogeneous particles contained in the product before color selection after the material is sorted. The higher the rejection rate, the cleaner the selection. In the case of a certain amount of processing, the higher the selection rate of the color sorter, the higher the sensitivity of the color sorter, instead of blindly increasing the sensitivity to complete it. Of course, stable machines and timely after-sales service are also key factors in evaluating machines.

Chapter 8: Technical development trend of color sorter machine

The color sorter machine evolved from single-sided to double-sided, and the sensor was upgraded from CMOS to CCD. Sorter technology is constantly improving. China has mastered the core technology of producing color sorters, and its products have gradually occupied more than 70% of the global market share. As industry companies continue to increase the amount and proportion of R & D investment in color sorting machinery, and promote technological innovation capabilities, product performance gradually catches up to and even exceeds similar foreign products. In the future, the technology will tend to be large-volume, intelligent, high-precision, and multi-purpose Innovative technology.

Chapter 9: References for optical sorting

The color sorting machine is a high-tech product. Involving multi-disciplinary fields such as optics, aerodynamics, physical sorting, chemical sorting, etc. To learn more about sorting equipment, you can get a lot of reference materials about sorting equipment from Wikipedia and Baidu Encyclopedia.

Learn more about color sorting machine

Other technical documents about COLOR SORTER GROUP

color sorter working principle


CSG Color Sorting Machine's working principle is according to the difference of the optical properties of the material, use photoelectric detection technology and Full-color high-definition CCD camera image acquisition system, get (RGB) red, green, and blue color information, depth identification of small and fine impurities, send signal to ejector, and use compressed air drive ejector to automatic sorting the heterochromatic granule from raw material.

CSG Color Sorter use world top SENSOR-BASED OPTICAL SORTING TECHNOLOGY, sorting range from 0.01mm to 5 cm, sorting precision more than 99.9%. Solve the high dust, high output, complex colors, etc sorting problems under harsh environment.