Your Reliable Chute Color Sorter
Manufacturer and Partner
SG has been developing and manufacturing professionally Chute Color Sorter for 20 years and our partners cover more than 26 countries.
Free Onsite Installation
Free Operation Training
Free Trouble Shooting

Chute Color Sorter

Chute-Type Color Sorter is an affordable smart grain screening device that helps you quickly remove the annoying impurities like sands, glass, mildewed seeds in your grain.

  • Chute color sorter performs Color Sorting and Shape Sorting at the same time;
  • Suitable for tiny things such as seed, grains, rice, nuts, etc
  • Free On-site Installation and Commissioning;
  • High Quality with Competitive Price
  • CE and CSA Approved

Reject Impurities, Using Color Sorter

Using a color sorter can help you quickly screen out grains that is full and free of impurities. Because of unique chute design, it is only used to small-sized solid seeds like grains, rice, beans, etc. You can find a detailed sorting list in the following description. Currently, SG can provide a complete range of sorting solution to match your various processing scale.

Mini Color Sorter
One Chute Color Sorter With 64 Channels.
shape and color sorter
128 channels Color Sorter for small-sized materials
ccd color sorter
It can sort corps and other materials which diameter ranges from 1 to 50 mm
optical sorting equipment
It sorts and grades the materials by two sorting modes
color sorter machine
It can perform multiple screenings at the same time.
optical separator
The Sorting Capability maybe a little different to all kinds of materials.
automatic sorting machine
It is mainly used to sort and grade corps, grains, tea, plastic and more
640 channels optical sorter
Optical Sorter can be used to large scale production workshop.
Grain & Rice Color Sorter
Grain & Rice Sorting

The chute-type color sorter is designed for grain and rice sorting. The built-in CPU is easy to detect and analyze the color and size difference between the impurities and the fruit. However, it is not only a grain cleaning machine because the device can find out close to 0.01mm2 mildew spot.

  • Sorting Objects: Grain, Rice, Beans, and etc.
  • Capability: 0.5 ~12 ton/h depends on your requests;
  • Sorting Precision: 99.9%
  • Language Setting: English, French, Spanish, Portuguese
  • Free Service: Commissioning + Startup + Training
  • OEM is welcome
Plastic & Ore Sorting Machine
Plastic & Ore Sorting

Due to the chute limit, the chute-type color sorter can only be used to plastic flakes sorting and ore sand sorting. It can pick out same color flakes or ore sands. The size range of sorting is around 200 mesh ~ 4 cm. If you are not sure whether the device can work on your material, please contact us for a free sorting test.

  • Sorting Objects: Plastic Flakes, Ore Sand, and etc.
  • Capability: 0.5 ~12 ton/h depends on your requests;
  • Sorting Precision: 99.9%
  • Language Setting: English, French, Spanish, Portuguese
  • Free Service: Commissioning + Startup + Training
  • OEM is welcome

Why SG Was Trusted By 200+ Customers

  • Top 2 Manufacturer of Color Sorters in China On the 100,000 Square Meter Manufacturing Center and about 500 Staff. SG is able to provide complete Ranges of Color Sorting Machines includes Belt Type Color Sorters and Chute Type Color Sorters.
  • 20 Years R&D and Manufacturing Experience SG can develop and manufacture our own CPU boards independently. All Control Programs are designed and optimized by our R&D Team, So we can provide Customize Services as well.
  • CE and CSA Approved All Regular SG Color Sorters have been approved by Shanghai SGS Testing Lab According to CE and CSA Standards. Most Models have worked in 26+ countries for many years.
Catalog Cover

Chute Color Sorter Guide

SG Chute Color Sorter is available with 1 to 12 chutes customization. SG provides high performance with single-layer color sorter and multi-layer color sorter.

Best used for tiny products like rice, grain, beans, minerals, and plastic particles, etc.

SG Color Sorter is widely seen in distribution, packaging, food processing, mining, recycling, waste management, chemical, plastic industries.

Chute Color Sorter

Graphic: SG Chute Color Sorter

SG Chute Color Sorter has two main functions of sorting and grading.

The sorting function is designed to diagnose the defective, broken, and deformed objects from the raw materials and then get the classified products.

The Grading Function is required for fine screening. For example, Tea and Coffee beans.

People who prefer tea have big requests for top-level tea leaves, and this function could quickly grade the tea based on color, weight, size, shape, etc.


There is a wide range of sorting capabilities for different products, and every chute generally has 0.2~3t/h sorting capability according to different materials.

Color Sorters in the warehouse

Graphic: Chute-Type Color Sorters in the warehouse


The color sorting accuracy is not less than 99% and the carryover rate(bad: good) around 10:1.


SG develops various types of color sorters to match different markets’ requests.


For the United States, the rated voltage is 240Vac. And in Europe, it is 220Vac. Besides, SG Color Sorter is available for the voltage of 380V and 415V.


There are two different sorting modes for practical products processing: Normal Sorting and Invert Sorting.


Both sorting methods are used to separate quality objects from the raw mixture. But there is a little difference between these two modes.


Normal sorting mode is suitable for materials with a small proportion of impurities and defects. However, the reverse sorting mode is better for the materials with a large percentage of impurities and defects.


The two sorting modes can work individually. Also, they work together.


SG Chute Color Sorter has two typical structures:

single layer color sorter

multi-layer Color Sorter.


Multi-Layer means many sorting modes and bigger sorting capacity.


Each layer may have one or more independent sorting groups, and each sorting group could select a specific sorting mode.


Therefore, Single layer Optical Sorter could only separate the impurities and the right things at one time. but the multi-layer color sorter could do twice sorting.


That means the multi-layer structure could separate the mix grains but also grade the fine products.

SG Chute Color Sorter is easy to operate.

There is a built-in humanized operation panel in the sorting machine. SG optimizes the operational flow to make it more logical.

On the hardware, the optical sorting machine uses original American chips. It can guarantee the long-term stable operation of the device.


 A network control module is available as well, and it supports TP/TCP protocol. Let Color Sorter connect to the internet, and you can easily control the machine through your smart devices such as iPad, iPhone, and Android phones.  


One machine = 100 labor


SG Chute Color Sorter has both unique image correction technology and full-color screening technology.


This unique image correction technology, also called non-linear aberration correction technology, can automatically correct the non-linear images because of distortion and aberration caused by signal errors during image collecting.


SG Chute Color sorter usually separates the raw material according to RGB color difference. And it adds another camera to collect image saturation information. Both these unique technologies can raise the accuracy of sorting.


SG chute color sorter is an automatic tool with a CCD camera and integrating light. It uses the high tech photoelectric diagnostic system to classify the heterogenic particles.

How does it work?

Color Sorter Working Principle

Graphic: Color Sorter Working Principle

SG Chute Color Sorter is a complete optical sorting system, and every component needs to work together to finish the sorting task.

  1. The Raw Material Mixture drops down from the Material Hopper first and passes through vibratory feeder enter the chutes.
  2. The vibratory feeder can make sure the objects fly to the chute in a line at the same speed.
  3. The CCD high revolution Cameras image them, the sensor mounted on the back of the cameras will analysis images and send a message of acceptance or rejection to chip processor.
  4. Finally, ejectors would release the compressed air and change defective grain’s motion track to separate them from the fine grain after receiving rejection signals from the chip.



There are about 1000+ accessories for every sorting machine. Following seven main components can help well understand how they work together to finish sorting task.


1. Material Hopper

Made of #304 Stainless Steel, the material hopper is the starting point for the entire sorting process. Original mix will enter the hopper and start their sporting journey.


#304 Stainless steel is food-grade materials, and it can touch the food directly according to LFGB and FDA standards.


2. Vibratory Feeder

The vibrator adjusts the uniformity of the material drop and ensures the sorted objects evenly arrive the chutes without any overlap. It is connected to the hopper and chute.


The material falls evenly into the chute, which reduces the proportion of material that is brought out.



Graphic: Chutes

The primary function of the chute is to give these materials at the same speed. There usually are 64 channels on each chute.


Plenty of objects leave from the vibratory feeder enter sorting area along with the channels.


On the other hand, fixed-length chute makes it easy to catch the objects and take photos.


During this process, it is necessary to select a smooth and durable channel. Smooth Channel would raise the speed of the grain, and High Speed will affect the sorting capacity.


We also design a dust cover for the chute, which will significantly reduce the influence of external impurities on the sorting process.


What’s more, A tracing heater is available that can mount at the back of the chute. The heater is a benefit for objects drying.


4.CCD Camera with High Revolution Sensor


Graphic: Color Sorter’s Sensor

High-Speed CCD Linear array Cameras take photos for the accelerated objects and the recognition accuracy up to 0.06mm.


Be able to provide HD image as high as 200 million pixels per second.

High Revolution sensor could quickly and accurately recognize the 0.01mm2 defects.


5.LED Light

The LED light provides a perfect fill light for imaged products, and it requires to install in front of the shooting area.


SG adds in a row of cold LED light, High luminance, low power consumption, 5k hours long life, which is a benefit for identification.




Graphic: Ejectors in the semi-warehouse

After receiving the digit signals from CPU, the ejectors that are 1 Billion times. High-Frequency Solenoid Valve responds quickly and releases 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.

SG selects a powerful and precise nozzle with 4.75MM port size.


7.Air Compressor and Filter

Air compressor allows providing compressed air continuously. 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 extend the lifetime of the machines. Besides, it increases the accuracy of the sorting.  

How to install and test?

debug Color Sorter

Graphic: SG Engineer is Debugging the Machine


SG will provide you the installation diagram and operation instruction with packaging.


Every Color Sorting Machine requires a separate metal support platform and material lifting system. The Metal Support Platform will lift the machine in a specific height, which will facilitate the collection of the material at the outlet.


The lifting system is used to deliver the material to the hopper.   CE and CSA approve SG Chute Color Sorters.

It is a safe and stable color sorting machine. SG has a 20-year manufacturing experience of the color sorter, and we can manufacture 500 pieces of Chute Color Sorter each month.


Regularly, we can arrange the delivery in 10 days.   Every SG Chute Color Sorter is required to do 100% performance testing before packing, which ensures all functions are useful.


Meanwhile, we would organize a professional engineer team to provide free on-site installation, operation training, maintenance, and 24 hours online troubleshooting.


Never stop yourself from contacting us we are here to provide the best solution for your business.

Rice SortingWhite Rice, Black Rice, Red Rice, Glutinous rice, Raw Rice, Steamed rice,
Boiled & Parboiled Rice, Basmati Rice, Vietnamese Rice, Long-Grain Rice,
Thai Fragrant Rice, Brown Rice, Sticky Rice, Jasmine Rice, etc
Grains & Seeds SortingCorn, Wheat, Peanuts, Beans (White beans, Soybeans, Broad beans, Mung
beans, Red beans,  Coffee beans, Black beans, Pattern beans, Castor bean,
Kidney bean, Lima bean) Cowpeas, Pellet, Hominy, Corn flakes, Gritz, Cherry,
Paddy, Maize, Oats, Rye, Barley, Chia, Peas, Chickpeas, Lentils,Flaxseed,
Lupine, Popcorn, Mustard, Quinoa, Millet, Pepper, Musk rose,Buckwheat, Lotus
seed,  Rapeseed, Poppy, Pumpkin, Watermelon, Tamarind,Coriander, Safflower,
Sunflower seeds, Sesame, Jatoba, Linseed, Grazing seeds,Maize, Sorghum, Pigeon
pea, Raisin, Myotonin, Chana Dal, Melon seeds, etc
Leafs & Tea SortingCTC, Tea(Green Tea, Ceylon Tea, Black Tea, White Tea, Dark Tea, Rock Tea,
Herbal Tea, Oolong Tea, Yellow Tea, Fermented Tea, Pekoe, Puer Tea, etc),
Tobacco, Dehydrated Vegetables to name just but a few that fall into this category
Seafood SortingShrimp Skin, Dried shrimp, Sleeve-fish, Clam etc
Plastic SortingMainly used to recycling. PC, PP, ABS,  PET, PVC, PE, PA, PMMA, Engineering Plastic, Polymer and Glass etc
Mining SortingOre, Stone, Quartz, Powder, Diamond, Salt, ect

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