Azuki bean Cleaning Solution

What cleaning machine do Azuki bean importers usually use?

When selecting cleaning equipment, mung bean importers should consider their own business positioning, the characteristics of impurities in the raw Azuki bean, and production capacity to choose suitable equipment.The main machine includes the following categories:

● Select equipment based on the characteristics of impurities in raw Azuki bean.

1、Long stalks and large clumps of soil → Must be equipped with a mung bean cylindrical pre cleaner or a mung bean vibrating pre cleaner (for initial coarse cleaning to protect downstream equipment).

2、Pebble and clods of soil similar in size to Azuki bean → Must be equipped with a mung bean gravity destoner (ordinary sieves cannot remove them).

3、Dust, broken grass, shriveled beans, and mixed beans of different sizes → Select a mung bean double air screen cleaner.

4、Moldy beans, black spots, insect holes, and weed seeds → Must be used with a mung bean color sorter.

5、A surface with floating dust and a dull, unsightly appearance → Add a mung bean polishing machine.

● Equipment Selection Based on Production Capacity

Small importers: 3-7 tons/hour

Typically, they choose single equipment such as air screen cleaners, gravity separators, destoners, and elevators. This requires little space, low investment, and can be operated by one person.

Medium-sized importers: 7-15 tons/hour

Typically, they choose pre cleaner + air screen cleaner + destoner + gravity separator + grading mahcine, operating as a production line.

Large importer processing plants: 30 tons/hour and above

Equipped with a complete production line, including pre cleaner + air screen cleaner + destoner + gravity separator + grading machine + color sorter + polishing machine + dust removal system, enabling continuous production.

How can the purity of Azuki bean be improved through the use of cleaning machine?

To achieve a purity of ≤0.1% for Azuki bean, free from stones, weed seeds, and mold, the entire set of equipment must be used sequentially; a single machine cannot achieve such high purity. Multiple cleaning devices remove straw, stones, clods of soil, shriveled beans, broken beans, moldy beans, dust, and other impurities from the Azuki bean layer by layer, transforming the raw beans into high-purity refined Azuki bean.

1、 Azuki bean Pre-cleaner:Remove large impurities

The first pre-processing step is to intercept large pieces of straw, bean stalks, large clods of soil, weeds, and bean pods. Removing these large impurities in advance prevents them from clogging the subsequent screens, reduces the burden on the fine cleaning process, and improves the basic purity from the source.

2、 Azuki bean air screen cleaner:Remove large and small impurities, as well as light impurities.

The Azuki bean air screen cleaner removes light impurities, bean shells, broken grass, dust, small impurities, broken beans and shriveled grains through air separation and screening, initially improving the cleanliness.

3、 Azuki bean Gravity de-stoner:Remove the Stones from Azuki bean

The mung bean destoner is specifically designed to remove small stones the same size as Azuki bean. Ordinary sieves cannot separate them; only gravity, vibration, and airflow stratification can thoroughly separate heavy and impurities, a crucial step in achieving the required purity.

4、 Azuki bean Gravity Separator:Remove shriveled and damaged Azuki bean.

Based on the differences in the fullness and density of the Azuki bean, they are classified. At the same time, the shriveled, infested and damaged Azuki bean are removed.

5、 Azuki bean Magnetic Separator:Removing Clods of Soil from Azuki bean

The Azuki bean magnetic separator uses magnetic force to remove soil and soil clumps. It is mainly used to remove soil from Azuki bean.

6、 Azuki bean Color Sorter:Precisely removes moldy, blackened, and discolored Azuki bean.

The mung bean color sorter can remove moldy, black-spotted, insect-damaged, sprouted, and discolored beans, directly raising the purity of Azuki bean to the high standards of supermarkets and export.

7、 Azuki bean grading machine

The Azuki bean grading machine sorts the Azuki bean by particle size, separating large particles, normal particles, small particles, and broken pods.

By using a complete set of equipment to screen Azuki bean for impurities, following a process from coarse to fine, precisely adjusting equipment parameters, and performing routine maintenance, it is easy to achieve high purity Azuki bean with low impurity content, free of stones and damaged grains.

一、What technical problems exist in the Azuki bean cleaning production line?

1、Mung bean raw materials have poor adaptability; fluctuations in dryness, moisture content, and size can lead to unstable cleaning.

The raw Azuki bean have high moisture content, uneven particle size, and are muddy and clumpy, which easily sticks to the screen surface and clogs the screen holes, resulting in a significant decrease in screening efficiency and excessive impurities.

2、Technical defects of the cleaning machine itself

The screen structure and vibration are not properly matched: the vibration frequency and tilt angle are not universally compatible, causing Azuki bean to slide too quickly and have a short residence time, resulting in insufficient screening; the screen mesh is prone to wear, deformation, and clogging: with long-term operation, the screen mesh aperture becomes larger and deformed, leading to leakage and cross-contamination of materials; damp materials are extremely prone to clogging, requiring frequent manual cleaning.

3、Issues related to the process layout and conveying technology of the entire production line

Inappropriate process sequence: Pre-cleaning followed by primary cleaning, or skipping primary cleaning and directly feeding the material into the air sieve, leads to large impurities clogging subsequent equipment and accelerated wear.

Damage to elevators and conveying equipment: Bucket elevators operate at excessively high speeds and have large drop heights, causing thin-skinned Azuki bean to easily crack, break, and peel.

4、Mechanical damage and yield issues

The high number of equipment transfers and impacts/frictions results in a high breakage and peeling rate across the entire production line. Light impurities are carried over, beans are missed during screening, and beans are carried over during stone removal, leading to significant overall cleaning losses and substantial raw material waste.

Regarding these issues, how should we design a Azuki bean cleaning solution?

In response to the problems of difficult separation of impurities and unstable purity in Azuki bean raw materials, we have designed a complete cleaning production line equipment. Through processes such as "pre-treatment → rough cleaning → fine cleaning → classification → polishing → color sorting", along with intelligent debugging and interlocking control, we achieve a closed-loop cleaning process throughout the entire process, and solve various pain points one by one.

Each process is designed specifically to address the corresponding technical issues.

(1) Azuki bean pre-cleaner ---Raw material pre-treatment

 Function:

✅ Remove large impurities, such as straw, grass ropes, burlap sheets, large pieces of soil, bricks, large stones, metal blocks, etc.

✅ The Azuki bean pre-cleaner adopts a multi-layer sieve surface vibration classification structure. The upper layer with large holes is responsible for intercepting large impurities, while the middle and lower layers successively separate fine sand, debris and small impurities. This single machine can complete multiple levels of initial cleaning.

Advantages:

✅ The initial cleaning effect is excellent： It can not only remove large debris such as straw, plastic bags, and large soil clumps, but also simultaneously screen out fine sand, soil powder, and small seedlings of grass.

✅ By relying on the mechanical self-cleaning structure, the problem of sieve holes being blocked due to the presence of mud on the surface of Azuki bean and slight moisture is solved.

✅ The materials are evenly layered, protecting the subsequent equipment, with a low crushing rate and reducing the loss of raw materials.

(2) Azuki bean air screen cleaner ---Solve the problems of blocked nets, residual fine and coarse materials, and imbalance of air volume.

Capacity:5-10 Tons per hour

Purity: 99%

Function:

✅ By combining air selection with screening, large impurities, small impurities, light impurities and dust in the Azuki bean are removed.

Advantages:

✅ Multifunctional impurity removal：It integrates vibrating screening and air separation functions, allowing one piece of equipment to simultaneously complete the separation of various impurities.

✅ Low material damage rate： Adopting flexible vibration and gentle material conveying design, the material flows smoothly without strong compression or violent collisions.

✅ High versatility, multiple functions in one machine:After replacing the screen mesh and adjusting the air volume parameters, it can be compatible for the separation of crops such as Azuki bean and soybeans, suitable for importers of various types of agricultural products, and the equipment utilization rate is high.

(3) Azuki bean destoner ---Remove the stones from the Azuki bean.

Capacity:5-10 Tons per hour

Purity: 99%

Function:

✅ By adjusting the vibration frequency and air volume, the stones in the Azuki bean can be removed.

Advantages:

✅ Food-grade stainless steel material：Stainless steel woven countertop, which can directly come into contact with food.

✅ High quality motor:for Azuki bean cleaning machine, high quality Japan bearing.

✅ Wide range of application：can adjust the vibration frequency to suitable for different types of beans materials .

(4) Azuki bean Gravity Separator  ---Remove the damaged or injured beans from the Azuki bean.

Capacity:5-10 Tons per hour

Purity: 99%

Function:

✅ The gravity separator can effectively remove diseased Azuki bean, damaged Azuki bean, rotten Azuki bean, deteriorated Azuki bean, moldy Azuki bean and ineffective Azuki bean from Azuki bean.

Advantages:

✅ Precisely sorted according to the proportion：By using differences in density and bulk density for separation, it is easy to distinguish: full and good Azuki bean, shriveled Azuki bean, insect-infested Azuki bean, and moldy Azuki bean..

✅ Adopting a design with anti-clogging screens： for Azuki bean cleaning machine, high quality Japan bearing.

✅ Wide range of applications： One machine can be used for various types of beans.

(5) Azuki bean Magnetic separator  ---Remove the clods from the Azuki bean.

Capacity:5-10 Tons per hour

Purity: 99%

Function:

✅ The gravity separator can remove all metals or clods and soils from Azuki bean.

Advantages:

✅ Stainless steel surface :  Used for food processing

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✅ Low speed no broken bucket elevator:  Transports Azuki bean to the magnetic separator without any damage occurring during the process.

✅ Advanced frequency converter: Can adjust the vibration frequency according to different materials to achieve the best results.

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(6) Azuki bean grading machine  --- separate the Azuki bean to different size.

Capacity:5-10 Tons per hour

Function:

✅ Vibration Grader for removing the the big & small impurities or separate different size for Azuki bean.

Advantages:

✅  Simple operation: Replaceable screen mesh allows for adaptation to different material classification requirements

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✅ Surface undergoes sandblasting treatment: Prevents rusting and moisture absorption.

✅ Advanced frequency converter: Can adjust the vibration frequency according to different materials to achieve the best results.

(7) Azuki bean polishing machine  ---Polish the surface of the Azuki bean.

Capacity:5-10 Tons per hour

Function:

✅ Clean the dust, mud spots and loose soil off the surface of the Azuki bean to ensure they have a uniform, smooth and shiny color.

Advantages:

✅  Excellent polishing results: The polishing cloth is made of pure cotton fabric and features good adsorption properties, thereby enhancing the polishing effect.

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✅ Durable and with a long service life: The outer cylinder is made of 304 stainless steel mesh, which has excellent durability.

✅ Protect the Environment: The entire polishing chamber operates under a suction negative pressure condition. The generated dust can be promptly removed, preventing the accumulation of dust which could affect the polishing effect.      .

(8) Azuki bean color sorter  --- Detect and remove moldy Azuki bean, discolored beans particles, as well as foreign objects such as glass. 

Function:

✅ Azuki bean color sorter relies on high-speed image acquisition, intelligent recognition and jet removal principles. By taking advantage of the differences in color, hue, defects and texture among different materials, it can precisely separate abnormal color particles, moldy particles, impurities and various types of particles.

Advantages:

✅  Precisely remove any non-uniform or deteriorated particles: Relying on high-definition optical recognition and intelligent algorithms, it accurately eliminates moldy  beans, diseased spots, insect-infested  beans, blackheads, and abnormal color mixed  beans.

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✅ Intelligent operation, simple to operate: Intelligent screen, adjustable parameters, simple operation, stable operation for long-term continuous use.

✅ Highly adaptable and suitable for a variety of materials: The Azuki bean color sorter can be switched with one click and is suitable for raw materials from different production areas such as Mexico and Peru.

(9) Azuki bean Auto packing machine  --- Automatically complete Azuki bean quantitative measurement and packaging.

Function:

✅ The Azuki bean auto packing machine used for packing the Azuki bean, From 10kg-50kg per bag, electronic controlled automatic.At the end of the Azuki bean production line, automatic feeding, weighing, discharging and bagging are carried out in a continuous process, replacing manual filling and weight estimation, significantly improving the packaging efficiency.

Advantages:

✅  Precise measurement and weighing: Accurate weighing, small quantitative error, and unified measurement standards.

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✅ Save manpower: Reduce the need for multiple people to weigh, carry bags, and prepare ingredients, thereby lowering labor costs.

✅ The operation is simple:One-click setting of weight, automatic adjustment of speed and capacity. Easy to switch specifications. Compatible with various packaging types of beans.

一、The advantages of the Azuki bean processing plant?

1、The process is seamless, and impurity removal is comprehensive and thorough.

First, the Azuki bean processing plant includes the pre-cleaner, Air screen cleaner, De-stoneer,Gravity separator,magnetic separator, grading machine, polishing machine,color sorter, and Auto packaging machine.The entire production line employs a closed-loop process comprising initial cleaning, air-screen separation, destoning, gravity separation, color sorting, and automated packaging. This sequence systematically removes coarse impurities, dust, grit, stones, shriveled grains, moldy kernels, and off-color contaminants; through this multi-stage, progressive purification, the finished product achieves a high level of purity.

2、High degree of automation, saving manpower

Our entire  Azuki bean production line is highly automated. The entire process features continuous mechanical transportation, automatic sorting, and quantitative packaging, eliminating the need for manual screening, handling, and weighing. This reduces reliance on human labor and significantly increases processing efficiency.

3、All the components of the entire machine are made from the world's top brands.

The Azuki bean processing plant core electrical, transmission, sealing, and sensing components are sourced exclusively from leading international top-tier brands, ensuring that all critical parts feature high-standard configurations. By addressing potential issues—such as wear and tear, aging, electrical faults, and mechanical jamming—at the source, the equipment achieves exceptional operational stability. This results in a significantly reduced failure rate, minimizes downtime for maintenance, and guarantees the long-term, continuous, and efficient operation of the Azuki bean processing line.