Spotted Beans Cleaning Solution

一、What problems might be encountered in the cleaning and processing of spotted beans?

When spotted beans are freshly harvested, they contain a lot of impurities, such as straw, bean stalks, broken stems and leaves, soil clods, pebbles, sand, grass seeds, weeds, etc. There are also shriveled, moldy, worm-eaten and broken beans, which vary in size and weight, making it difficult to sort them out completely in one go.

1、Cleaning machine operation-related issues.

● Insufficient screening and classification:

Improper selection of screen mesh size, unreasonable inclination angle of the screen surface, and inappropriate vibration frequency all contribute to the leakage of large impurities, incomplete cleaning of small impurities, and failure to separate good beans from crushed beans and grass seeds. Insufficient screening and classification.

● Equipment blockage, material clogging:

The long stalks of straw got entangled in the feed inlet, the screen, and the hopper of the elevator; the damp spotted beans stuck to the inner walls of the equipment and the pipelines, causing poor material discharge and machine blockages, which required frequent shutdowns for cleaning.

2、Quality and mold/pest infestation issues

●  Mold spots and rotten beans are difficult to remove:

The naked eye and ordinary screening methods cannot accurately distinguish slightly moldy or internally infested spotted beans. If these are mixed into the finished product, they will affect storage and food safety.

●  Fungal growth and spoilage:

Due to the accumulation of materials during processing with poor ventilation and excessive moisture content, the spotted beans that have accumulated will heat up, resulting in rapid moisture absorption, mold growth, and color changes within a short period of time.

3、Problems related to processes and production operations

● Inconsistent feed volume:

Fluctuating between excessive and insufficient. When the equipment is overloaded, the sorting accuracy significantly decreases; too little feed results in waste of production capacity and low cleaning efficiency.

● The process sequence is unreasonable:

The order of initial cleaning, wind selection, screening, stone removal, and classification is incorrect. The fine processing is carried out after the initial cleaning, which results in a large amount of impurities wearing down the equipment and increasing the wear of the screen mesh.

What cleaning machine do spotted beans importers usually use?

To remove impurities such as stalks, shredded leaves, soil clumps, stones, and moldy beans from spotted beans, importers generally adopt a multi-stage combined approach of "initial cleaning → stone removal → magnetic separation → specific gravity measurement → polishing → grading → color sorting → dust removal".The main machine includes the following categories:

1、 Spotted Beans Air Screen Cleaner

Function: Can remove large particles (such as straw, leaves, etc.), small particles (such as weed seeds) and light impurities (such as dust, empty shells).

2、 Spotted Beans Gravity De-stoner

Function:  It can remove small stones similar in size and weight to spotted beans.

3、 Spotted Beans Gravity Separator

Function: Remove unripe spotted beans, infested spotted beans and moldy spotted beans kernels.

4、 Spotted Beans Polishing machine

Function: Clean the dust, mud spots and loose soil off the surface of the spotted beans to ensure they have a uniform, smooth and shiny color.

5、 Spotted Beans Color Sorter

Function: It can quickly detect color changes, mold, glass and plastic impurities in spotted beans and precisely remove them.

6、 Spotted Beans Dust System

Function: It can remove light impurities and dust; prevent the workshop from being contaminated and prevent dust from adhering to the surface of spotted beans.

7、 Spotted Beans Packaging Scale

Function:  Automatic weighing (10–50 kg/bag), bag sewing / heat sealing.

How can the purity of spotted beans be improved through the use of cleaning machine?

By combining multiple devices, parameter matching and process technology, dust, straw, grass seeds, stones, soil clumps, shriveled spotted beans, broken beans and moldy spotted beans in spotted beans are removed layer by layer, transforming raw spotted beans into high-purity refined spotted beans.

1、 Spotted beans Pre-cleaner:Remove large impurities

The first pretreatment step involves screening out large straws, big clumps of soil, ropes and large debris to reduce the load on subsequent equipment, prevent machine blockages and lay a foundation for the subsequent thorough cleaning.

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

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

3、 Spotted beans Gravity de-stoner:Remove Stones from spotted beans

The spotted beans destoner is specifically designed to remove stones that are stuck together and cannot be removed by the air sieve. This significantly reduces the stone content and improves the purity for edible use.

4、 Spotted beans Gravity Separator:Remove substandard and damaged spotted beans.

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

5、 Spotted beans Magnetic Separator:Removing Clods of Soil from spotted beans

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

6、 Spotted beans Color Sorter:Precisely removes moldy, blackened, and discolored spotted beans.

The spotted beans color sorting machine remove moldy spotted beans , discolored spotted beans , impure spotted beans  of different colors, and spotted beans of different varieties. Ensure that the products meet the national standards with high purity and no damaged spotted beans .

7、 Spotted beans grading machine

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

From raw spotted beans to finished refined spotted beans, various levels of impurities are removed step by step. The major impurities are cleared first, then light impurities are removed by air, heavy impurities are removed by sieving, irregular spotted beans are sorted, and damaged spotted beans are selected. The purity gradually increases.

二、What technical problems exist in the spotted beans cleaning production line?

1、The problems caused by spotted beans raw materials

Impurities are complex and difficult to separate: they contain long stalks, soil clumps, boulders, crushed bean skins, and moldy particles. A single sieve hole is unable to meet all requirements, resulting in small particles being lost, large particles being mixed in, and a decrease in sieve separation accuracy.

2、Selection equipment structure and process challenges

Both impurity removal and particle size classification are required. A single piece of equipment cannot handle both at the same time. When connected in series, there is a risk of transportation damage and seedling injury. The long stalks, weeds and hemp ropes in spotted beans are prone to entangle the elevator, the sieve shaft, the sieve surface, resulting in poor material feeding, blockage of the sieve surface and interruption of the production line.

3、Production operation and commissioning challenges

The feed flow is unstable and the parameter adaptation relies on experience. Different types of spotted beans from different origins, with varying levels of dryness and size, require re-adjustment of sieve holes, air volume, amplitude, and inclination angle. There is a lack of adaptive intelligent regulation, making it difficult for beginners to operate.

4、The overall integration problem of the production line

After the initial cleaning, upgrading, wind screening, and stone removal processes are connected in sequence, the conveying speeds at the beginning and end are not coordinated, resulting in blockage, overflow, and accumulation of materials. The spotted beans have a lot of dust during the sorting process, and the dust removal design of the ventilation duct is unreasonable, resulting in excessive dust in the workshop.

Regarding these issues, how should we design a spotted beans cleaning solution?

In response to the problems of difficult separation of impurities and unstable purity in spotted beans 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) Spotted beans 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 spotted beans 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 spotted beans 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) Spotted beans 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 spotted beans 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 spotted beans and mung beans, suitable for importers of various types of agricultural products, and the equipment utilization rate is high.

(3) Spotted beans destoner —Remove the stones from the spotted beans.

Capacity:5-10 Tons per hour

Purity: 99%

Function:

✅ By adjusting the vibration frequency and air volume, the stones in the spotted beans 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 spotted beans cleaning machine, high quality Japan bearing.

✅ Highly adjustable： accommodating diverse material types and specifications.

(4) Spotted beans Gravity Separator  —Remove injured beans from the spotted beans.

Capacity:5-10 Tons per hour

Purity: 99%

Function:

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

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 spotted beans, shriveled spotted beans, insect-infested spotted beans, and moldy spotted beans..

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

✅ Highly adjustable： One machine can be used for various types of spotted beans.

(5) Spotted beans Magnetic separator  —Remove the clods from the spotted beans.

Capacity:5-10 Tons per hour

Purity: 99%

Function:

✅ The gravity separator can remove all metals or clods and soils from spotted beans.

Advantages:

✅ Stainless steel surface :  Used for food processing

✅ Low speed no broken bucket elevator:  Transports spotted beans 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.

(6) Spotted beans grading machine  — separate the spotted beans to different size.

Capacity:5-10 Tons per hour

Function:

✅ Vibration Grader for removing the the big & small impurities or separate different size for spotted beans.

Advantages:

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

✅ 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) Spotted beans polishing machine  —Polish the surface of the spotted beans.

Capacity:5-10 Tons per hour

Function:

✅ Clean the dust, mud spots and loose soil off the surface of the spotted beans 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.

✅ 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) Spotted beans color sorter  — Detect and remove moldy spotted beans, discolored spotted beans particles, as well as foreign objects such as glass.

Function:

✅ spotted beans 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 spotted beans, diseased spots, insect-infested spotted beans, blackheads, and abnormal color mixed spotted beans.

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

✅ Adaptable, suitable for multiple sources of supply: It can be switched between spotted beans and mung beans in one click, and is suitable for raw materials from different production areas such as Mexico and Peru.

(9) Spotted beans Auto packing machine  — Automatically complete spotted beans quantitative measurement and packaging.

Function:

✅ The spotted beans auto packing machine used for packing the spotted beans, From 10kg-50kg per bag, electronic controlled automatic.At the end of the spotted beans 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.

✅ 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.

三、The advantages of the spotted beans processing plant?

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

First, the spotted beans 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 spotted beans, moldy spotted beans; through this multi-stage, progressive purification, the finished product achieves a high level of purity.

2、High degree of automation, saving manpower

Our entire  spotted beans 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 spotted beans 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 spotted beans processing line.