Over 10,000+ customers' choice, Focus on screening industry 40+ years
Challenge 1: Lumps – where do they come from, and where do they go?
Protein powder lumps originate from two main pathways. First is the inherent agglomeration tendency of the raw material – protein powder particles are fine, and during storage and transport, electrostatic adhesion and intermolecular forces cause them to form agglomerates of varying sizes. Second is moisture‑induced lumping – whey protein powder, soy protein isolate, and other materials have a certain degree of hygroscopicity, absorbing moisture from the storage environment and forming hard lumps.
The impact of lumps is cascading. During screening, lumps block the screen mesh, reducing screening efficiency. During mixing, lumps cannot be uniformly blended with other ingredients, affecting product formulation consistency. During end‑use application, lumps impair solubility and mouthfeel, directly diminishing the consumer experience.
Challenge 2: Fines – why are they "hard to separate"?
The difficulty in separating protein powder fines stems from the material's physical properties. Whey protein powder, for example, has particle fineness down to 43 microns, making it a typical ultra‑fine powder. Plant protein powders are typically lighter in density and prone to electrostatic charge generation during screening – fine particles adhere to the screen surface and gradually accumulate, forming a "powder film" that blocks the mesh.
The consequences of incomplete fines separation are equally serious. Excessive fines in the finished product lead to broad particle size distribution, affecting dissolution rate and mouthfeel consistency. In subsequent packaging, high fines content also affects material flowability and filling accuracy.
Gaofu's S49 series rotary vibrating sieve uses a vertical vibration motor as the excitation source. Eccentric weights installed at the top and bottom of the motor convert rotary motion into a three‑dimensional compound motion (horizontal, vertical, and inclined), which is transmitted to the screen surface. By adjusting the phase angle of the upper and lower eccentric weights, the material's movement trajectory and residence time on the screen can be flexibly changed to suit different protein powder characteristics.
To address the two major challenges of lumps and fines separation in protein powder screening, the rotary vibrating sieve provides systematic solutions in the following aspects:
1. Lump breaking – built‑in flexible de‑agglomeration mechanism
Soy protein powder, with its high protein content and strong adhesion, is prone to lumping and agglomeration. Gaofu's rotary vibrating sieve incorporates a flexible de‑agglomeration mechanism that gently breaks up protein powder lumps during screening without causing material degradation. After lumps are broken into individual particles, they enter the screening zone for classification – fundamentally eliminating the impact of lumps on screening efficiency and finished product quality.
2. Three‑dimensional anti‑blinding vibration – fines "don't linger"
On conventional two‑dimensional vibrating screens, fine protein powder tends to accumulate statically on the screen surface, gradually blocking the mesh. The three‑dimensional compound motion of the rotary vibrating sieve causes material to spread outward on the screen surface in a spiral path, with constant tumbling and bouncing – this reduces the static residence time of fines on the screen surface, inherently lowering the probability of blinding. Paired with a bouncing ball cleaning system that continuously strikes the screen surface through vibration, material passes through the screen smoothly.
3. Multi‑deck grading – lumps and fines separated in one pass
Gaofu's rotary vibrating sieve supports flexible configurations of 1 to 5 screen decks , enabling 2 to 6 grades of separation or filtration in a single feed. For protein powder processing, the upper deck intercepts large lumps and foreign matter, the middle decks achieve fine classification, and the lower deck acts as a safety screen to remove ultra‑fine powder – one feed completes lump breaking, foreign matter interception, and fines separation in three steps. Classification efficiency reaches 92% to 98%.
4. Ultrasonic cleaning – overcoming ultra‑fine powder blinding
For ultra‑fine protein powder screening above 100 mesh, traditional bouncing ball cleaning has limited effectiveness. Gaofu's rotary vibrating sieve can be equipped with an ultrasonic cleaning system – high‑frequency vibration keeps fine powder in a "suspended" state on the screen surface, effectively inhibiting adhesion and blinding. The ultrasonic system is self‑cleaning and requires no additional cleaning devices – particularly suitable for ultra‑fine, blinding‑prone materials such as whey protein powder.
5. Food‑grade materials – hygiene and safety assured
Protein powder is widely used in food and health supplement applications, placing high demands on equipment hygiene standards. Gaofu's rotary vibrating sieve uses 304 food‑grade stainless steel for all material‑contact parts (316L available on request), with finely polished surfaces and no dead corners. The fully enclosed structure prevents dust emission during operation, complying with food industry hygiene requirements.
Soy protein powder – solving the challenge of sticky materials
Soy protein powder, with its high protein content and strong adhesion, is prone to screen blinding and lumping. Gaofu's rotary vibrating sieve uses a flexible de‑agglomeration mechanism to break lumps, combined with multi‑deck screens (customisable from 80 to 200 mesh) to achieve separation of coarse powder, fine powder, soybean hulls, and dust impurities. Screening fineness reaches up to 600 mesh (0.02 mm) , with filtration precision down to 5 microns.
Whey protein powder – precise separation of ultra‑fine powder
Whey protein powder has a particle fineness of approximately 43 microns – an ultra‑fine powder with good flowability but prone to moisture absorption, lumping, and containing small amounts of sediment that need effective separation. Gaofu's rotary vibrating sieve uses three‑dimensional vibration to create spiral motion on the screen surface – fine particles pass through the screen while larger particles and sediment are separated. Paired with the ultrasonic cleaning system, it effectively resolves ultra‑fine powder blinding.
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
Fortune 500 Client Testimonials
CNPC、CSCEC、Sinochem Holdings、CRCC、China Minmetals Corporation、CNOOC、CR、Sinopharm、CHN Energy、COFCO Corporation、Huawei Technologies、PowerChina、CITIC Group、Wuchan Zhongda Group、NORINCO、Chalco、CNBM、 Shaanxi Coal and Chemical Industry Group、Ansteel Group、CETC、CSSC、CASC、CEC、Jinchuan Group、CASIC、Conch Cement、CNNC、SPH、Shanxi Coking Coal Group、 Zhongtai Chemical、GPHL、DEC、Sinosteel Corporation、MCC、China National Salt Industry Chemical、China Baowu Steel Group、China Animal Husbandry Industry Co., Ltd.、CECEP
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.
