Over 10,000+ customers' choice, Focus on screening industry 40+ years
Peanut powder is an important raw material in the food processing industry. From peanut protein powder and peanut butter base to peanut powder for baking, different applications have completely different fineness requirements. Ordinary peanut powder needs to pass through 80‑120 mesh screens, while peanut protein powder requires higher fineness – 150 mesh, 200 mesh, or even ultra‑fine powder above 500 mesh.
However, when screening mesh size exceeds 200 mesh, traditional screening equipment begins to lose its effectiveness.
The material characteristics of peanut powder make it a recognised "difficult‑to‑screen" material. Peanuts themselves have a high oil content, and after grinding, the powder surface becomes oily, making it prone to adhering to the screen during screening. Ultra‑fine peanut powder has a low bulk density and is easily dispersed, making it difficult to pass through the screen on ordinary vibrating screens. The powder also tends to generate static electricity during high‑speed motion, causing fine powder to adhere to the screen surface and form a "powder film" that gradually blocks the mesh openings.
When traditional vibrating screens handle ultra‑fine peanut powder, they often fall into the repetitive cycle of "blinding – stoppage – cleaning – blinding again." For peanut powder processors that require continuous production, every stoppage for blinding represents lost capacity and increased costs.
Even more challenging is the dust problem. Peanut powder is light and easily becomes airborne. During operation, ordinary screening equipment allows large amounts of fine powder to escape into the workshop air – not only causing costly material loss (peanut protein powder is valuable, and every gram of powder that drifts away represents a direct economic loss) but also contaminating the workshop environment and affecting the occupational health of operators.
To address the above pain points in peanut powder screening, the Gaofu WSA series peanut powder centrifugal sifter, with its enclosed negative pressure structure and airflow atomisation + centrifugal classification as core technologies, provides a professional and efficient solution for dust‑free classification of ultra‑fine peanut powder.
The Gaofu peanut powder centrifugal sifter uses a screening principle that is fundamentally different from ordinary vibrating screens. The equipment is based on the core technology of "airflow atomisation + centrifugal classification", completely changing the traditional method of relying on gravity for passage through the screen.
Airflow Atomisation and Material Dispersion
The screen is cylindrical and placed inside a sealed housing. After material is fed smoothly through a screw conveying system, it is thoroughly mixed and atomised with high‑speed airflow inside the sealed chamber. The high‑speed airflow thoroughly breaks down agglomerates formed by oil and static electricity in the peanut powder, keeping the material in a uniform suspended state – individual micro‑particles move forward at a constant speed with the airflow, fundamentally solving the problems of blinding and screen adhesion.
This step is particularly critical for peanut powder screening. Peanut powder has a high oil content and tends to form lumps during storage and conveying. Airflow atomisation achieves pre‑dispersion before the material reaches the screen, allowing every particle to enter the screening area as an independent unit.
Dual Action of Centrifugal Force and Spiral Pushing Force
The atomised material enters the inner cavity of the cylindrical screen. Inside the cavity, high‑speed rotating impeller blades (with a main shaft speed of 800 to 1,500 rpm) subject the material to two forces simultaneously: centrifugal force throws the material toward the inner wall of the screen, while spiral pushing force moves the material forward along the screen cylinder.
Under the combined action of centrifugal force and spiral pushing force, the material passes through the screen in a "jetting" manner – fine powder smaller than the mesh openings exits through the screen and is discharged from the fines outlet, while coarse particles and impurities larger than the openings move along the inner wall of the screen cylinder and are finally discharged from the coarse outlet.
The key breakthrough of this technical approach is that material no longer relies on gravity to "fall" through the screen, but "flies" through the screen under airflow propulsion. For ultra‑fine peanut powder, which is oily, prone to adhesion, and has a low bulk density, the airflow‑through‑screen method effectively reduces the contact time and contact area between the material and the screen, fundamentally reducing the probability of screen blinding from a physical principle perspective.
One of the most troublesome problems in peanut powder screening is dust escape during operation.
Peanut protein powder, ultra‑fine peanut powder and other products have high economic value – every gram of powder that drifts away is a direct economic loss. More critically, peanut powder is rich in protein and oil. Once it escapes into the workshop air, it not only pollutes the environment but may also cause allergic reactions and other occupational health issues.
The Gaofu peanut powder centrifugal sifter completely solves this problem through structural design.
1. Fully Enclosed Negative Pressure Circulation System
The equipment features a fully enclosed sealed structure , with the screening process taking place inside a sealed chamber. The entire process of conveying, atomisation, screening and collection is completed inside a completely enclosed chamber. Fine powder is discharged through enclosed pipelines directly to the next process or collection system; coarse material is collected through an automatic sealed discharge port.
The entire screening process operates under negative pressure semi‑circulation – the internal pressure is lower than the external environment, so dust cannot escape. Negative pressure operation + sealed structure ensures no material escape during operation, with high recovery rates and significant improvement in the workshop environment.
2. Practical Value of Dust‑Free Classification
The fully enclosed negative pressure structure brings multi‑dimensional value to peanut powder processors:
Improved environment – Workshop dust concentration is effectively controlled. The sealed structure prevents dust escape at the source, and operators no longer have to work in a "dust‑filled" environment.
Material savings – Dust dispersion means raw material waste. The fully enclosed structure greatly improves material recovery rates, significantly reducing the loss of high‑value peanut powder.
Compliance assurance – The fully enclosed negative pressure structure ensures that the equipment meets increasingly strict environmental and food safety production requirements. The equipment can be connected in series with pneumatic conveying systems, enabling continuous enclosed screening from drying to packaging.
Advantage 1: Efficient Anti‑Blinding – Completely Eliminating the Screen Blinding Problem
Peanut powder has a high oil content and is prone to adhesion. Traditional vibrating screens frequently blind. The Gaofu centrifugal sifter features continuous high‑speed airflow scouring of the screen , eliminating blinding and enabling strong continuous operation, with efficiency 2 to 3 times that of traditional screens.
The screen is vertically mounted , so during operation it does not suffer from continuous gravitational pressure from the material – the mesh maintains its natural state and is less prone to deformation, significantly extending service life.
Advantage 2: High Screening Accuracy – Suitable for Ultra‑Fine Peanut Powder Classification
The Gaofu centrifugal sifter covers a mesh range of 20 to 500 mesh. The fine classification of ultra‑fine peanut powder – from conventional 80‑mesh screening to ultra‑fine 500‑mesh classification – can all be completed on the same machine simply by changing the screen mesh.
Screening efficiency can reach over 95%, and throughput is 5 to 10 times or more that of vibrating screens. Taking the Gaofu WSA‑800 model as an example, screening accuracy can be stably controlled at 500 mesh (25 microns) with a passing rate of over 95%.
The product fineness is precise, with no oversize cross‑contamination. For food ingredients such as peanut protein powder that have strict fineness requirements, this accuracy ensures finished product quality consistency.
Advantage 3: Enclosed and Dust‑Free – Environmentally Friendly
The whole machine features a fully enclosed design with negative pressure operation and sealed structure – no material escape during operation. No dust, no noise.
The fully enclosed structure, combined with the micro‑negative pressure design inside the system, ensures no dust escape during screening – not only improving the workshop working environment but also reducing material loss and meeting increasingly strict environmental production requirements.
Advantage 4: Long Screen Life – Low Maintenance Costs
The vertical screen mounting is not subject to pressure and wears less, significantly extending service life. The equipment has a compact size, light weight, smooth operation without vibration, and a well‑designed structure with simple routine maintenance.
The equipment can be used as a single unit or in combination with multiple units , supports long‑term continuous operation , and is safe and reliable. The equipment supports 24‑hour uninterrupted continuous operation.
Advantage 5: Food‑Grade Materials – Ensuring Food Safety
Peanut powder is used directly in food processing, so equipment materials must meet strict hygiene requirements. All material‑contact parts of the Gaofu peanut powder centrifugal sifter are made of 304/316L food‑grade stainless steel.
The equipment can be customised in materials and configuration to meet the hygiene requirements of the food industry. The equipment is also equipped with a gas protection system that can deliver purified air to both ends of the equipment, forming an air barrier around the bearings to prevent dust ingress and extend bearing life.
From the perspective of actual production conditions in peanut powder processing, the Gaofu WSA series centrifugal sifter delivers value in four dimensions:
Accuracy value – Screening accuracy can reach over 95%, with stable passing rates for ultra‑fine powder screening at 500 mesh. Finished peanut powder has uniform particle size and high purity, meeting the strict requirements of food processing for ultra‑fine peanut powder.
Efficiency value – Throughput is 5 to 10 times that of vibrating screens; continuous high‑speed airflow scouring eliminates screen blinding; the equipment can run 24 hours continuously. The production line no longer needs to stop frequently because of blinding, and overall capacity is fully utilised.
Environmental value – The fully enclosed negative pressure structure effectively controls workshop dust concentration. Material loss of high‑value peanut powder is significantly reduced, the workshop environment is clean, and operator occupational health is protected.
Compliance value – Food‑grade stainless steel and the fully enclosed structure ensure that the equipment complies with food production hygiene standards. In food safety audits and customer factory inspections, standardised classification equipment and regulated process flows give products stronger compliance credibility.
Food Industry Client Testimonials
Nestlé, CP Group, Haitian Flavour & Fragrance, Yihai Kerry, Yili, Mengniu,Shuanghui, Wahaha, Master Kong, Want Want, Anjoy Foods, Angel Yeast,Yangyuan Foods, Uni-President Enterprises, Qiaqia Food, Luhua Group,Alpenliebe, Golden Monkey, Orion, Xizhilang,Sanquan Foods, Synear Food, Oishi, Wong Lo Kat, Yanjing Beer, Seamild,Jinpai, Chubang, Hengshun Vinegar Industry, Longda Group, Beijing Daoxiangcun, Anhe Dairy,Weiwei Group, Xiangpiaopiao, Maiquer, Tianbing, Binqi Food, Ligao Okun
About Gaofu
Xinxiang Gaofu Machinery Co., Ltd. was founded back in the 1980s. With over 40 years of development, it has been certified as a National-level Specialized, Refined, Unique & Innovative Little Giant Enterprise, National Green Factory, National High-tech Enterprise, and National Intellectual Property Advantage Enterprise, and serves as the President Unit of China Vibration Screening Industry Association.
The company is accredited with the Henan Provincial Industrial Design Center, Henan Provincial Engineering Technology Research Center for Intelligent On-line Screening System, and Xinxiang Municipal Engineering Technology Research Center for Fine Screening.
Gaofu has obtained more than 500 patents including invention patents, utility model patents and design patents, been awarded the Science and Technology Achievement Prize issued by the Ministry of Industry and Information Technology of China, and participated in drafting and formulating 4 national standards.
Gaofu's product portfolio covers multiple series and hundreds of specifications, including vibrating screening equipment, conveying equipment, coal crushing equipment, filtration equipment and automatic material handling systems.
Core products include vibrating screens, screening machines, vibratory sifters, rotary vibrating screens, ultrasonic vibrating screens, linear vibrating screens, airflow screens, gyratory screens, roller screens, dewatering screens, bar screens, vacuum feeding machines, dust-free feeding stations, bulk bag feeding stations, feeding systems, automatic powder feeding systems, automatic slag-discharging filters, leaf filters, clay filters, toothed roll crushers, coal crushers and other machinery.
These products are widely applied in food, pharmaceutical, chemical, metallurgy, construction materials, mining, thermal power, environmental protection and many other industries, winning recognition and trust from over 10,000 clients worldwide.
Gaofu products enjoy strong sales across Greater China, and are exported to more than 100 countries and regions such as Russia, Canada, the United States, New Zealand, Japan, Brazil and South Africa.
Upholding the corporate mission of Improving material quality & efficiency to fully satisfy customer demands, Gaofu maintains long-term partnerships with clients to achieve win-win development.
At present, Gaofu is an official qualified supplier for numerous Fortune Global 500 enterprises, including CNPC, Sinopec, Sinochem Holdings, China Resources Group, Sinopharm Group, COFCO, China National Building Material, China Aerospace Science and Technology Corporation, Jinchuan Group and more.
Gaofu Machinery ranks No.1 in global sales volume of vibrating screens.
In May 2024, Frost & Sullivan, a world-renowned international consulting firm, issued a Market Position Verification Certificate confirming that Gaofu achieved the world's largest shipment volume of vibrating screens in the global market in 2023.
