Peanuts Cleaning Solution

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

When peanuts are freshly harvested, they contain a lot of impurities, such as straw, 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、Raw material pre-treatment stage.

● High content of soil and sand particles:

During the field harvest and drying process, a large amount of wet mud, dry soil, soil clumps, and sand stones are brought in. The soil is prone to get stuck in the gaps of the fruit shells and the wrinkles on the surface of the peanut kernels. It is difficult to completely remove them through drying. The fine sand, small stones, and peanut kernels have similar densities, making them difficult to separate and remove.

● Comprises a wide variety of impurities and contaminants:

The raw materials are mixed with vines, stems, leaves, crushed fruit shells, weeds, shriveled fruits, empty shells, moldy fruits, and insect-eaten fruits. The long fibrous vines are prone to entangle the screen net and the conveying shaft, causing blockage of materials, jamming of the machine, and interruption of the feeding process.

2、Problems in the crushing and gravity separation stages

●  The problem of the joint stones is difficult to solve:

Fine sand grains, hard mud clumps have a density similar to that of peanut kernels. Any fluctuations in the feed flow rate, any slight deviation in the tabletop inclination or wind speed will cause stone leakage. Hard impurities entering the subsequent equipment are very likely to damage the shell removal machine, polishing machine and grinding tools.

●  The inferior peanuts were not sorted thoroughly:

Rotten kernels, insect-eaten kernels, germinated kernels, and diseased and rotten fruits cannot be completely removed merely by their size and weight. Peanut spoilage is prone to produce antitoxins, and missed detection can lead to food safety risks.

What cleaning machine do peanuts importers usually use?

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

1、 Peanuts 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、 Peanuts De-stoner

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

3、 Peanuts  Gravity Separator

Function: Remove unripe peanuts, infested peanuts and moldy peanuts kernels.

4、 Peanuts Color Sorter

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

5、 Peanuts  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 peanuts.

6、 Peanuts Packaging Scale

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

How can the purity of peanuts 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 peanuts, broken peanuts and moldy peanuts in peanuts are removed layer by layer, transforming raw peanuts into high-purity refined peanuts.

1、 Peanuts 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、 Peanuts air screen cleaner:Remove large and small impurities, as well as light impurities.

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

3、 Peanuts Gravity de-stoner:Remove the peanuts Stones

The peanuts 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、 Peanuts Gravity Separator:Remove substandard and damaged peanuts.

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

5、 Peanuts Magnetic Separator:Removing Clods of Soil from peanuts

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

6、 Peanuts grading machine

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

From raw peanuts to finished refined peanuts, 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 peanuts are sorted, and damaged peanuts are selected. The purity gradually increases.

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

1、The problems caused by peanuts raw materials

Impurities are complex and difficult to separate: they contain long stalks, soil clumps, boulders 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 peanuts 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 peanuts 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 peanuts 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 peanuts cleaning solution?

In response to the problems of difficult separation of impurities and unstable purity in peanuts raw materials, we have designed a complete cleaning production line equipment. Through processes such as "pre-treatment → rough cleaning → fine cleaning → classification→ 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) Peanuts 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 peanuts 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 peanuts 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) Peanuts 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 peanuts 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 peanuts and mung beans, suitable for importers of various types of agricultural products, and the equipment utilization rate is high.

(3) Peanuts destoner —Remove the stones from the peanuts.

Capacity:5-10 Tons per hour

Purity: 99%

Function:

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

✅ Highly adjustable： accommodating diverse material types and specifications.

(4) Peanuts Gravity Separator  —Remove the injured peanuts from the peanuts.

Capacity:5-10 Tons per hour

Purity: 99%

Function:

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

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 peanuts, shriveled peanuts, insect-infested peanuts, and moldy peanuts..

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

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

(5) Peanuts Magnetic separator  —Remove the clods from the peanuts.

Capacity:5-10 Tons per hour

Purity: 99%

Function:

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

Advantages:

✅ Stainless steel surface :  Used for food processing

✅ Low speed no broken bucket elevator:  Transports peanuts 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) Peanuts grading machine  — separate the peanuts to different size.

Capacity:5-10 Tons per hour

Function:

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

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) Peanuts color sorter  — Detect and remove moldy peanuts, discolored peanuts particles, as well as foreign objects such as glass.

Function:

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

✅ 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 peanuts and soybeans in one click, and is suitable for raw materials from different production areas.

(8) Peanuts Auto packing machine  — Automatically complete peanuts quantitative measurement and packaging.

Function:

✅ The peanuts auto packing machine used for packing the peanuts, From 10kg-50kg per bag, electronic controlled automatic.At the end of the peanuts 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 peanuts processing plant?

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

First, the peanuts processing plant includes the pre-cleaner, Air screen cleaner, De-stoneer,Gravity separator,magnetic separator, grading 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 peanuts, moldy peanuts; through this multi-stage, progressive purification, the finished product achieves a high level of purity.

2、High degree of automation, saving manpower

Our entire  peanuts 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 peanuts 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 peanuts processing line.