Over 10,000+ customers' choice, Focus on screening industry 40+ years
Soybean powder is one of the most widely used raw materials in the food processing industry. From traditional soymilk and tofu to modern plant‑based protein beverages, baked goods and meat product additives, soybean powder – with its rich plant protein content and functional properties – holds an irreplaceable position in the food industry.
However, different applications require vastly different fineness levels of soybean powder.
Soybean powder for baking typically requires a particle size of 100 mesh or finer to ensure uniform mixing with other powders and a smooth finished product texture. For soy protein isolate production, 97% of the soybean powder must pass through a 100‑mesh screen – only by achieving this fineness can the efficiency of subsequent extraction processes and product purity be ensured. Coarse soybean powder products, on the other hand, are required to pass through 10 to 40 mesh screens. From coarse grinding to ultra‑fine milling, from defatted soybean powder to full‑fat soybean powder, each product has its own specific particle size standards.
More importantly, in the production process of soybean powder, screening is a critical step that connects upstream and downstream operations. Taking soy protein isolate powder production as an example, the raw material undergoes multiple processes including extraction, acid precipitation separation, neutralisation, flash evaporation and drying. After drying, the soy protein powder must undergo a final impurity removal and de‑agglomeration treatment before entering the packaging stage. The core task of this screening step is to remove lumps, agglomerates and impurities, ensuring the purity of the semi‑finished raw material.
If the screening equipment cannot achieve precise multi‑stage classification – with coarse and fine powders mixed together, and lumps and impurities entering the finished product – it will directly affect the solubility, texture and quality stability of downstream food processing applications.
The Gaofu S49 series soybean powder rotary vibrating sieve is a specialised screening machine designed specifically for the above requirements. With its multi‑deck design for "one feed, multi‑fraction separation", three‑dimensional gyratory motion for screening accuracy, and food‑grade stainless steel for hygiene safety, it provides a professional solution for soybean powder processors to screen raw materials to different fineness levels on demand.
The Gaofu S49 series soybean powder rotary vibrating sieve uses a vertical vibration motor as the excitation source. Eccentric weights installed at the upper and lower ends of the motor shaft convert the rotational motion into horizontal, vertical and tilting three‑dimensional compound motion, which is then transmitted to the screen deck. By adjusting the phase angle of the upper and lower eccentric weights, the motion trajectory of the material on the screen surface can be changed.
The value of this three‑dimensional gyratory motion for soybean powder screening lies in three aspects:
First, thorough material loosening and natural breaking of lumps. Soybean powder continuously tumbles and shifts on the screen surface, and moisture‑induced lumps and agglomerates are naturally broken apart during the motion – preventing lumps from blocking the mesh openings or being rejected as waste.
Second, extended screening path and high accuracy. The material travels along a spiral trajectory, giving every particle multiple opportunities to contact the screen. The S49 series rotary vibrating sieve can achieve screening fineness up to 600 mesh (0.02 mm) and filtration precision down to 5 microns. From coarse impurity removal to ultra‑fine classification, a single machine covers the full range of requirements.
Third, high processing capacity suited to large‑scale production. The equipment covers a capacity range of 0.5 to 15 tonnes per hour , with classification efficiency reaching 92% to 98% . Whether it is a small to medium‑sized processor handling a few tonnes per day or a large enterprise handling hundreds of tonnes per day, there is a capacity configuration to match.
Soybean powder products often require more than one particle size grade. Different end‑use applications have different fineness requirements – baking powders, plant‑based protein beverage powders, soy protein isolate raw materials, coarse granular products – each with its own specific mesh standards.
The Gaofu S49 series rotary vibrating sieve supports 1 to 5 screen decks , enabling simultaneous separation into 2 to 6 grades. Taking the most typical three‑deck configuration for soybean powder screening as an example:
First deck (coarser mesh): Intercepts insufficiently ground large particles, bean hull fragments and foreign matter that may be introduced during processing. Oversize material is discharged from the top outlet and can be returned to the grinding stage for reprocessing or used for other purposes.
Second deck (target mesh): Collects the acceptable‑size finished soybean powder. Depending on the product type, this deck can be configured with 10 to 40 mesh for coarse granular products, or 100 mesh or finer for fine soybean powder.
Third deck (finer mesh): Separates ultra‑fine powder. Ultra‑fine powder is discharged from the bottom outlet and can be used for high‑value‑added products (such as protein beverages and nutritional supplements) or for other purposes.
One machine, one feed – simultaneously completes the three steps of coarse impurity removal, target classification and fine powder separation. For manufacturers that need to produce different grades of soybean powder, the multi‑deck design greatly reduces equipment investment and process transfer time, while also avoiding the risk of secondary contamination from material transfer between multiple machines.
Advantage 1: Food‑Grade Stainless Steel – Ensuring Food Safety
Soybean powder is used directly in food processing, so equipment materials must meet strict hygiene requirements. All material‑contact parts of the Gaofu soybean powder rotary vibrating sieve are made of food‑grade 304 stainless steel , with finely polished surfaces, no hygiene dead corners, and easy to clean. For production lines requiring even higher cleanliness, 316L stainless steel is available. The equipment complies with food GMP standards, eliminating the risk of metal contamination at the material source.
Advantage 2: Fully Enclosed Sealed Structure – Dust, Moisture and Contamination Protection
Soybean powder tends to generate dust during screening, causing material loss and workshop contamination. The Gaofu soybean powder rotary vibrating sieve features a fully enclosed sealed structure , with screening taking place inside a sealed chamber – no mesh blockage, no powder escape. The fully enclosed design also effectively blocks external moisture, preventing secondary moisture absorption and caking of the soybean powder during screening.
Advantage 3: Multiple Anti‑Blinding and Screen Cleaning Mechanisms – Solving the Blinding Problem
Soybean powder has high protein content and strong adhesion, making it prone to adhering to the screen during screening. The Gaofu soybean powder rotary vibrating sieve incorporates multiple anti‑blinding solutions:
Bouncing ball cleaning system. Food‑grade silicone balls are placed under the screen deck. During screening, the balls continuously tap the underside of the screen, dislodging adhering soybean powder and keeping the mesh clear.
Ultrasonic cleaning system (optional). For ultra‑fine soybean powder (above 200 mesh) or more sticky materials, an optional ultrasonic system can be added. High‑frequency vibration is transmitted to the screen surface, effectively breaking material adhesion and solving the problems of electrostatic adhesion and micro‑fine particle blinding.
Mother‑child screen frame structure. The mother screen provides structural support, while the fine screen (working screen) performs the screening. When the fine screen wears out or a different mesh size is needed, only the fine screen needs to be replaced; the mother screen can be used for a long time. Screen changes take only 3 to 5 minutes.
Advantage 4: Automatic Discharge of Impurities – Supporting Continuous Operation
During screening, impurities and oversize material automatically move along the screen surface to the reject port and are discharged. The equipment can run 24 hours continuously without frequent stoppages for cleaning, with a normal service life of 15 to 20 years and controllable long‑term operating costs.
Advantage 5: Robust Design with Simple Operation
The Gaofu S49 series rotary vibrating sieve is efficient, robust and user‑friendly – easy screen changes, simple operation and convenient cleaning. The compact size saves space and is easy to move. Operators can perform routine operation and maintenance without specialised skills.
The Gaofu S49 series soybean powder rotary vibrating sieve is suitable for the following soybean powder and related material screening applications:
Defatted soybean powder finished product classification. Classifying defatted soybean powder produced by low‑temperature desolventising – fine powder must have 97% passing through a 100‑mesh screen, while coarse granular products are required to pass through 10 to 40 mesh. Multi‑deck screens complete multi‑stage classification with a single feed, ensuring that different product grades meet particle size standards.
Full‑fat soybean powder fine screening. Full‑fat soybean powder typically requires particle size not exceeding 100 mesh. The high‑precision screening capability of the rotary vibrating sieve meets this requirement, ensuring solubility and texture in baking, beverage and other applications.
Soy protein isolate raw material screening. After drying, soy protein powder requires final impurity removal and de‑agglomeration to remove lumps, agglomerates and impurities, ensuring the purity of the semi‑finished raw material. The rotary vibrating sieve performs the final quality check before the product enters the silo.
Soy fibre powder impurity removal and classification. Soy fibre powder is light, easily agglomerated and highly adsorptive, making it prone to screen blinding. The combined cleaning system of the Gaofu rotary vibrating sieve (bouncing balls intelligently paired with ultrasonics) continuously applies cleaning force to the screen, significantly breaking down agglomerates and fundamentally reducing the risk of blinding.
Plant‑based protein beverage raw material pre‑treatment. Before soybean powder enters the blending tank as a beverage ingredient, it must undergo impurity removal and fineness control to ensure uniform fineness and good solubility.
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.
