Automatic Yellow Onion Powder Production Line
Yellow Onion Process Flow
- Yellow Onion Washing Machine
- Yellow Onion Pealing and Cutting Machine
- Yellow Onion Drying Machine
- Yellow Onion Grinding Machine
- Yellow Onion Powder Mixing Machine
- Yellow Onion Powder Filling Machine
- Yellow Onion Powder Packing Machine
Yellow Onion Automatic Productino Line Design:x`
The Automatic Yellow Onion Powder Production Line is a comprehensive, integrated system engineered to transform fresh yellow onions into fine, shelf-stable powder through a continuous, highly efficient, and automated process, significantly enhancing production capacity and product consistency compared to manual or semi-automated methods.
The Journey of Core Production: From Raw Bulbs to Powder
The trip begins with the raw material handling and pre-treatment facility. Automated belt or vibratory feeders are used to transport freshly harvested yellow onions into the system. The first crucial stage is thorough cleaning. A multi-stage washing system, commonly incorporating bubbling wash tanks, high-pressure spray rinses, and sometimes brush rollers, effectively removes grime, dust, and surface contaminants. This procedure is critical for final product hygiene and to prevent abrasive particles from damaging subsequent machinery like the grinding machine. After washing, onions are routinely peeled, either mechanically or via automated air-jet peeling devices. The peeled bulbs next move to an automatic cutting-type slicer or dicer, which uniformly slices or dices them into pieces of consistent thickness. For eventual drying rates to be even, this consistency is essential.
The Crucial Process of Drying and Dehydration
After being sliced, the onion pieces go into the dehydration and drying module, which is the center of the moisture removal stage. This is a carefully regulated environment rather than a straightforward heating chamber. The majority of contemporary lines use either a multi-layer conveyor drier or a continuous belt dryer. Heated, clean, and regulated air is circulated over and through the layers of onions inside. The temperature and airflow are rigorously regulated to produce low-temperature drying.This mild method, typically emulating natural wind-drying principles, is vital for conserving the onion’s volatile aromatic compounds (which produce flavor), its natural yellow hue, and heat-sensitive nutrients. Here, automation plays a crucial role. The wet material automatically enters one end, moves at a predetermined speed through various temperature zones, and exits the other end as dry, crisp onion slices or flakes that are ready to be ground. This increases efficiency by doing away with the requirement for manual tray loading and unloading.
Reduction of Size: From Flakes to Fine Powder
The part responsible for size reduction and grinding receives the dried, brittle onion bits. This is where the actual transformation into powder occurs, and depending on the required final granulation, equipment selection is crucial. For normal onion powder, a Hammer Mill or a Universal Grinder often serves as the first coarse crusher, breaking the large flakes into smaller particles. For finer, more uniform powder appropriate as a premium spice, the material may next be passed into a secondary Ultrafine Grinder or an Airflow Pulverizer. These devices generate powders with mesh sizes ranging from 8 to more than 80 using fast rotors and accurate internal classifiers.Some sophisticated lines may use Cryogenic Grinding Machine technology, which cools onions with liquid nitrogen both before and during grinding to produce a higher-quality powder, for heat-sensitive compounds or to preserve even more volatile oils. The grinding chamber and other contact parts are normally constructed of stainless steel for food safety and corrosion resistance. A well-designed Universal Grinder with the right screens can efficiently handle dried onions, even though there are specialist grinders for different goods, such as a Dry Fruit Powder Grinder Machine, Dry Ginger Grinder Machine, Licorice Grinder Machine, or Black Pepper Grinder. To maintain a clean industrial environment and recover product, the system is frequently enhanced with a central dust collector or an integrated dust collector grinder configuration.
Final Processing and Automated Packaging
It’s not yet time to bag the freshly ground onion powder. To guarantee uniform particle size and eliminate any excessive particles that might be recirculated for more grinding, it often goes through a sifting or screening equipment. In some designs, especially when greater hygiene standards are required, a Vacuum Mill or closed-system Dust Grinder might be utilized to contain all fines. The automatic packaging device receives the final, authorized powder.Here, the powder is precisely measured into pre-made bags or pouches by automated weigh-fillers, which frequently use auger filler technology. This might be food-grade plastic woven sacks or 25 kg paper bags for large industrial sales. For consumer packaging, it could be small retail sachets. After being filled, the bags are sealed, date-coded, and transported for palletizing or cartoning. A central control panel oversees the synchronized operation of the entire line, from the first charger (feeding unit) to the finished package.
Equipment Versatility and Compliance
The inherent flexibility of such modular automated lines is a major benefit. The core grinding machine and dryer can process a variety of dried vegetable, herb, and spice products, even if they are best suited for onions. For instance, with minimal tweaks, the same 500KG Grinder or 200KG grinder capacity system used for onions could theoretically turn mushroom, tea leaves into flour, or other dried herbs. The concepts are comparable to those found in commercial coffee grinders, maize grinders, and cassava grinders for flour.To avoid cross-contamination, however, stringent hygienic procedures unique to the product must be adhered to. Reputable producers make sure that their equipment, particularly vital parts like electric grinder motors and control systems, bear international safety and quality certifications like the CE Certificate grinder designation, guaranteeing purchasers that it complies with vital environmental, health, and safety regulations. The designs emphasize ease of washing and upkeep, and the structure is primarily made of stainless steel.
Fulfilling Various Market Requirements
The installation of a complete Automatic Yellow Onion Powder Production Line responds to the increasing demand for reliable, superior dried food components worldwide. It guarantees product homogeneity, enhances sanitation, and significantly boosts output by automating labor-intensive procedures like loading dryers and hand grinding (which might employ a tiny grinder machine in a boutique setting but is impracticable for scale).This automation is essential to competitive, dependable production, whether producing branded consumer spice goods or delivering bulk powder to manufacturers of soup, sauce, and snacks. The technique echoes that used in other food processing sectors, from making bean powders to grinding sesame or peanut for pastes, but is perfectly calibrated for the special properties of the modest yet pungent yellow onion, converting it into a versatile, long-lasting, and profitable commodity.

Automatic Yellow Onion Powder Production Line
From raw material intake to final packing, the Automatic Yellow Onion Powder Production Line is a smoothly integrated industrial system that effectively turns fresh yellow onions into a consistent, shelf-stable, and superior food-grade powder with little user involvement.
Pre-treatment of Raw Materials
The method begins with the pre-treatment of raw onions. Fresh yellow onions are fed into the line, often via an automated charger or conveyor system. To ensure the purity of the finished food product, they first go through a rigorous cleaning stage when all surface dirt, soil, and debris are removed using air bubble washers or high-pressure water sprays.Subsequently, peeling is performed utilizing mechanical friction peelers or steam peeling technology. Effective peeling is essential because it reduces wastage and guarantees that only the best flesh is used, avoiding any unpleasant flavors. The cleaned and peeled onions are then ready for size reduction. It’s important to note that this first step of preparation is identical to procedures for other vegetable and spice goods, such as preparing cassava for a cassava grinding machine or ginger for a dry ginger grinding machine.
Slicing and Primary Size Reduction
After peeling, the onions are moved to slicers with automatic cutting. These devices perfectly slice the bulbs into uniform thin slices or dices. For the next step, even drying, consistency is crucial. Uneven slices would lead to variable moisture content, impacting the ultimate powder quality. The slicing mechanism, often incorporating rotary blades, is designed for high throughput and low juice loss, conserving the powerful flavor compounds of the onion. This stage is analogous to pretreatment for other drying and grinding activities, be it for mushroom, fruit, or specific plants.
Dehydration and Drying
This is the most essential stage for flavor and color preservation. In order to prevent microbial growth, the onion slices are carefully dehydrated to a moisture content of less than 5%. While hot air drying in conveyor dryers is common for its efficiency, advanced lines may employ vacuum or freeze-drying for premium products to better retain volatile aromatics and nutrients. To avoid excessive browning (the Maillard process) and nutrient degradation, precise temperature control is essential. The dried product turns into brittle, crisp slices that are ideal for grinding. The idea is comparable to drying herbs for a herb grinder, tea leaves, or ingredients for a licorice grinder.
Grinding and Milling into Powder
Here, the dried onion pieces are turned into powder. This stage frequently comprises a two-step milling process. The brittle slices are first broken up into smaller granules by feeding them into a Hammer Mill or a coarse crusher. The material is subsequently treated by a high-precision grinding equipment to produce the final, fine powder needed by the food industry (usually 80–100 mesh). The best option is an ultrafine grinder or an airflow pulverizer, sometimes referred to as a turbo grinder. These devices create an incredibly fine and uniform powder without producing too much heat, which could deteriorate flavor, by using high-speed rotors and internal air classification.For ultimate quality preservation, certain lines might use a cryogenic grinding machine, where onions are refrigerated with liquid nitrogen during milling. Similar to a dry fruit powder grinder, a black pepper grinder, or a universal grinder used for rice, coffee, or spices, the grinding unit is the center of the line. It must be manufactured from stainless steel for food safety and simple cleaning. Depending on the size of the facility, a 500KG or 200KG grinder may be chosen to control capacity.Additionally, a vacuum mill or integrated dust collector grinder system is necessary to preserve a clean plant environment, recover valuable product, and guarantee operator safety—a characteristic that is equally crucial in a flour mill, chemical processing with a dust grinder, or when milling sugar or salt.
Quality Control, Sifting, and Homogenization
The onion powder goes via a vibrating pulverizer or sifter after being ground. By eliminating any large particles or agglomerates, this vibrating screen guarantees a consistent distribution of particle sizes. After being sifted, the powder is placed in a mixing or homogenization silo. Similar to blending spice mixes, medication powders, or protein powders from bean sources, this step is essential for attaining batch-to-batch uniformity by combining powder from several drying or grinding runs to ensure a consistent color, flavor, and potency.
Sterilization, Cooling, and Final Processing
To meet high food safety requirements (such ISO or HACCP) and ensure a long shelf life, the onion powder undergoes a low-temperature sterilization process. Techniques like microwave sterilization and radiation are favored because they efficiently lower the microbiological load (bacteria, yeasts, and molds) without using excessive heat that could degrade the product’s quality. Immediately after sterilization, the powder is immediately cooled to ambient temperature to prevent any leftover heat from causing clumping or flavor loss. This chilled, sterile powder is now ready for packaging.
Automated Handling and Packaging
The final stage involves fully automated packaging. An automatic weighing and filling equipment receives the powder and precisely divides it into bags. For maximum preservation, many packages use nitrogen flushing (replacing oxygen) before sealing to avoid oxidation and keep the rich color and aroma. A multi-layer aluminum foil composite bag, which provides superior barriers against moisture, oxygen, and light, is commonly used as the packaging material. After that, bags are date-coded, sealed, and sent to automated palletizing or cartoning processes. To ensure compliance with international manufacturing standards, all equipment in this area, such as the electric grinder used in the milling step, should have the appropriate safety certifications, such as a CE Certificate grinder or its equivalent for the packaging machinery.
To sum up, the Automatic Yellow Onion Powder Production Line is an example of an advanced fusion of automation technology and culinary engineering. By precisely managing each step—from washing and drying to the precision of an Ultrafine Grinder—it offers a superior, consistent product that fulfills the needs of global food makers, spice blenders, and consumer markets. Its design principles and core machinery, such as the stainless steel universal grinder with dust collector, share common ground with lines processing diverse dry materials, from peanut and sesame to tobacco and specialized chemicals, but are expertly tailored to handle the unique challenges and quality objectives presented by the pungent and flavorful yellow onion.


Parameters:

Model Name | SG-600 | |
| Crushing Capacity(kg/h) | 1000~2000 | |
| Power(kw) | 11 | |
| Feeding Size(mm) | <5mm | |
| Fineness(mesh) | 20~40mesh |
Model Name | SG-800 | |
| Crushing Capacity(kg/h) | 2000~4000 | |
| Power(kw) | 15 | |
| Feeding Size(mm) | <5mm | |
| Fineness(mesh) | 20~40mesh |
Trade Capacity
| International Commercial Terms(Incoterms): | FOB, CIF, CFR | Terms of Payment: | LC, T/T, PayPal, Western Union |
| Average Lead Time | 60 working days | Main Markets | North America, South America, Europe, Southeast Asia/ Mideast, East Asia(Japan/ South Korea), Australia, Domestic |
| Nearest Port: | Ningbo Port; Shanghai Port | Factory Address: | JiangSu, China |
Ampere of Motors Customization for Seeds Grinder:
| KW | HP | Ampere |
| 75kw | 100HP | 135A |
| 55kw | 75HP | 99A |
| 30kw | 40HP | 54A |
| 22kw | 30HP | 39A |
| 2.2kw | 3HP | 3.9A |
| 1.5kw | 2HP | 2.7A |
Test Report for Flax Seed Grinder:






A flax seed grinder is a type of seed nut grinder specifically designed for grinding flax seeds. Flax seeds are small, hard seeds that are packed with nutrition and are commonly used in baking and cooking. Grinding flax seeds helps to unlock their nutrients and make them easier to digest.
Flax seed grinders typically feature sharp blades or burrs that rotate to crush the flax seeds into a fine powder. This powder can then be used in a variety of recipes, such as smoothies, baked goods, and yogurt toppings. Some flax seed grinders are manual and require hand-cranking, while others are electric and feature powerful motors for faster grinding.
When choosing a flax seed grinder, it’s important to look for one with durable blades or burrs that can withstand the hard texture of flax seeds.
There are 3 ways of cooling down the grinder: water cooling system; air cooling system and liquid nitrogen freezing system. You can choose the right one if the grinder gets too hot. When machines goes too hot, the metal can expand, causing the grinding wheel to get stuck.
| Business Type: | Manufacturer/Factory | Main Products: | Mill, grinder, granulator, mixer, Crushing Equipment |
| Number of Employees: | 100 | Year of Establishment: | 2014.05 |
| Production Capacity | 5000Set/Year | After-sales Service: | Technical Support; on-line teach lessons |
| R&D Capacity: | ODM, OEM | Annual Output Value: | US$5 Million – US$10 Million |
| No. of R&D Staff: | 5 | No. of Production Lines: | 6 |
LK Mixer is a professional manufacturer for grinder, mixer and pulverizer. These machines are widely used in pharmaceutical, cosmetic, health care products and chemical industries. Our main product including granulating machine, grinder, mixer, dryer, etc. All mechanical products in accordance with the China GMP design requirements. And also we have other certifications such as CE, UL for motors.
Business Philosophy
“Quality is the main policy of sales” and “integrity is the principle of success” are the business philosophy of our people. We carry out one-year warranty, lifelong maintenance service, with technical consultation, with material test machine and other services, and long-term supply of equipment. Welcome new and old customers to negotiate cooperation!
Certifications:

Customer Side Machine Groups Showcase Videos:
Dust Collector Shipment
Shipment – Packing Method
Two Large Industrial Grinder Ready to Ship
Domestic Shipment Show Case:

Operation Instruction
General Provisions
The operation instructions for a commercial grinder may vary depending on the specific model and manufacturer. However, here are some general guidelines that may apply to many high speed grinders:
- Safety precautions: Before operating the high speed grinder, it is important to review all safety precautions and warnings provided in the user manual. Safety precautions may include wearing appropriate personal protective equipment, such as eye protection and hearing protection, and avoiding loose clothing or jewelry that could become caught in the grinder.
- Preparation: The high speed grinder should be placed on a stable and level surface, and all necessary components should be assembled according to the manufacturer’s instructions. The grinder should also be connected to a power source that is appropriate for its voltage and wattage.
- Loading the grinder: The material to be ground should be loaded into the grinder according to the manufacturer’s instructions. Overloading the grinder may cause damage to the machine and result in poor grinding performance.
- Starting the grinder: The grinder should be started according to the manufacturer’s instructions. This may involve pressing a button, turning a dial, or flipping a switch. The user should ensure that their hands are clear of the grinder and that the material to be ground is positioned properly.
- Adjusting the speed and settings: The speed and other settings of the high speed grinder may be adjusted according to the material being ground and the desired outcome. The user should follow the manufacturer’s instructions for making adjustments to the grinder.
- Monitoring the grinding process: The user should monitor the grinding process to ensure that it is progressing smoothly and that the material is being ground to the desired size and consistency. Any issues or abnormalities should be addressed promptly to prevent damage to the machine.
- Shutting down the grinder: When the grinding process is complete, the grinder should be shut down according to the manufacturer’s instructions. The user should ensure that the machine is completely stopped and that all moving parts have come to a complete stop before attempting to clean or service the grinder.
Overall, the operation instructions for a commercial grinder may involve a number of steps and safety precautions. It is important to carefully review the manufacturer’s instructions and follow proper operating procedures to ensure safe and effective use of the machine.
Preparation Work
Before running a commercial grinder, there are several important preparation steps that should be taken to ensure safe and effective operation of the machine. Here are some general guidelines for preparing to run a high speed grinder:
- Read the user manual: The first step in preparing to run a high speed grinder is to carefully read the user manual provided by the manufacturer. The user manual will provide important information about the specific model of grinder being used, including its features, specifications, and safety precautions.
- Select the appropriate grinding wheel: The grinding wheel used in a high speed grinder should be selected based on the material being ground and the desired outcome. It is important to use the correct type of grinding wheel to prevent damage to the machine and ensure optimal grinding performance.
- Inspect the grinder: Before running the grinder, it is important to inspect it for any signs of damage or wear. The user should check for loose or missing components, cracks or other signs of damage to the machine’s housing or other parts, and any other issues that could affect the grinder’s operation.
- Install the grinding wheel: The grinding wheel should be installed according to the manufacturer’s instructions, making sure that it is securely fastened and aligned properly. The user should also check the wheel for any cracks or other signs of damage before installation.
- Secure the workpiece: The workpiece to be ground should be securely clamped or held in place before starting the grinder. This will help to ensure safe and effective operation and prevent the workpiece from becoming dislodged or damaged during grinding.
- Connect the power source: The high speed grinder should be connected to a power source that is appropriate for its voltage and wattage. It is important to use a properly grounded power source to ensure safe and reliable operation of the machine.
- Test run: Before beginning actual grinding operations, it may be useful to perform a test run to ensure that the grinder is functioning properly and that the grinding wheel is aligned and balanced properly. The user should follow the manufacturer’s instructions for performing a test run.
By following these preparation steps, users can ensure safe and effective operation of a high speed grinder and achieve optimal grinding results.
Treatment of inspection
Inspection of a commercial grinder is an important maintenance procedure that helps ensure safe and effective operation of the machine. Here are some general guidelines for inspecting a high speed grinder:
- Disconnect power source: Before performing any inspection or maintenance on a high speed grinder, the power source should be disconnected to prevent accidental startup.
- Check for wear and damage: The user should inspect the grinder for any signs of wear or damage, such as cracks in the housing, worn or damaged grinding wheels, or loose or missing parts. Any issues should be addressed promptly to prevent further damage to the machine.
- Check alignment and balance of grinding wheel: The grinding wheel should be inspected for proper alignment and balance, as these factors can affect the quality of the grinding operation. If the grinding wheel is not properly aligned or balanced, it should be adjusted or replaced as necessary.
- Check for proper lubrication: The high speed grinder should be inspected for proper lubrication, as inadequate lubrication can cause excessive wear and damage to the machine’s moving parts. The user should follow the manufacturer’s instructions for lubrication, and add lubricant as necessary.
- Inspect electrical components: The electrical components of the high speed grinder, including the wiring, switches, and control panel, should be inspected for any signs of wear, damage, or loose connections. Any issues should be addressed promptly to prevent electrical problems.
- Test run: After completing the inspection, it may be useful to perform a test run of the high speed grinder to ensure that it is functioning properly and that any issues have been addressed.
By following these inspection guidelines, users can help ensure safe and effective operation of a high speed grinder and minimize the risk of damage or injury during grinding operations.
Operation Attention
Running a commercial grinder can be a dangerous operation if proper precautions are not taken. Here are some general guidelines for safe operation of a high speed grinder:
- Personal protective equipment: The user should wear appropriate personal protective equipment, such as safety glasses, hearing protection, and gloves, to prevent injury from flying debris, noise, and contact with the grinding wheel.
- Secure workpiece: The workpiece being ground should be securely clamped or held in place to prevent it from becoming dislodged during grinding.
- Use proper grinding wheel: The user should select the appropriate grinding wheel for the material being ground and ensure that it is installed correctly and securely. The grinding wheel should be inspected for cracks or other damage before use.
- Adjust grinding wheel speed: The speed of the grinding wheel should be adjusted according to the manufacturer’s instructions to ensure optimal grinding performance and prevent damage to the machine or workpiece.
- Avoid excessive pressure: The user should avoid applying excessive pressure to the grinding wheel, as this can cause the wheel to overheat and wear out more quickly.
- Avoid overheating: The high speed grinder should not be operated continuously for extended periods of time, as this can cause overheating and damage to the machine.
- Monitor grinding operation: The user should closely monitor the grinding operation to ensure that the workpiece is being ground properly and that the grinding wheel is functioning correctly.
- Disconnect power source: After completing grinding operations, the power source should be disconnected to prevent accidental startup.
By following these guidelines, users can operate a high speed grinder safely and effectively, and achieve optimal grinding results. It is important to follow the manufacturer’s instructions and all applicable safety regulations when operating any type of machinery.
Applications of Industrial Seed Grinder
Industrial seed grinders are used in a variety of applications across many industries. Here are some of the most common applications of industrial seed grinders:
- Food industry: Industrial seed grinders are used extensively in the food industry to grind seeds, nuts, and spices into fine powders or pastes. These powders and pastes are then used in a variety of products such as sauces, seasonings, and spreads.
- Pharmaceutical industry: In the pharmaceutical industry, industrial seed grinders are used to grind plant material into a fine powder, which is then used to make medicines and supplements.
- Cosmetics industry: Industrial seed grinders are also used in the cosmetics industry to grind plant material into a fine powder or paste, which is then used in products such as face masks, scrubs, and exfoliants.
- Agricultural industry: Industrial seed grinders are used in the agricultural industry to process seeds, such as soybeans, into animal feed.
- Chemical industry: In the chemical industry, industrial seed grinders are used to grind materials such as resins, pigments, and dyes into a fine powder.
- Renewable energy industry: Industrial seed grinders are also used in the renewable energy industry to process biomass into a fine powder, which is then burned to generate electricity.
Overall, industrial seed grinders are versatile machines that are used in many different industries for a variety of applications. They are essential for processing plant material into fine powders and pastes that can be used in many different products.
Food Producing Process Flow:
Ultrafine grinding is one of the very key procedure in whole production line. It depends how many mesh that customer need to produce. That’s to say this machine can decide what kind of material will get finally before mxing.
Coarse Crusher Machine —>Grinding Machine —> Vibrating Table Sifter Machine—>Mixing Machine—>Packing Machine —> (Printed Packaging Film Roll or bags ) —> Filling, sealing machine, capping and Labeling Machine —>Pack into Box.
Contact us for detail proposal and cost:


Automatic Banana Powder Production Line Youtube Video
Customization Seeds Grinder According to your Capacity:
We can customize the capacity according to your special requirement, we can also customize the vacuum feeder connect with your production line (the dimension and width of grinder), for detail contact with our sales for proposal and price.

Videos of Seeds Grinder Machine:
Many model of Seeds Grinder, the universal grinder is suitable to cut the seeds into 12-120mesh, the high efficient grinder is useful, but cost a little bit higher than universal. The super fine grinder can grind into 100mesh to 320mesh. Customer can choose according to your own requirement. here show some example:
About LKMixer
LKMixer is a professional manufacturer for fertilizer production line, grinder, mixer and granulator, shredder. These machines are widely used in food, pharmaceutical, cosmetic, health care products and chemical industries. The Food materials like Peanut, mushroom, seeds, potato, bean, tobacco, salt, cannabis, tea, Sugar, corn, Coffee, rice, pepper, grain as so on. Grinders have many types such as Pulse Dust Grinder which suitable for zero pollution environment, Turbine Mill which is suitable for coffee bean, 12-120mesh all can meet, Ultrafine Grinding Mill covers 80-200mesh, and also Winnowing Dust Grinder or other grinding machines like SF Hammer. Welcome to contact us for details. Contact us for more information. Proposal, catalog, quotation. Mobile/WhatsApp: +86 18019763531 Tel: +86 21 66037855 Email: sales@lkmixer.com
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