Over 10,000+ customers' choice, Focus on screening industry 40+ years
The biggest difference between protein powder and ordinary powdered materials lies in its high value and high fineness. Whey protein powder, for example, has a particle fineness of up to 43 microns – an ultra‑fine powder. The challenges at the feeding stage for such materials far exceed those of general industrial powders:
Dust emission makes workshop environment difficult to meet standards. Protein powder is lightweight – the moment a bag is opened and tipped, large quantities of fine powder disperse with air currents throughout the workshop. Dust not only settles on equipment surfaces, increasing cleaning burdens, but can also migrate to other clean areas, compromising the segregation between different cleanliness zones. For sports nutrition plants seeking GMP certification, inadequate dust control is often a "deduction point" during audits.
Material loss – direct economic loss. Protein powder is a high‑value material – the cumulative dust loss at the feeding stage in large‑scale production is a cost that cannot be ignored. In large‑scale production, raw material waste alone can amount to significant economic losses.
Cross‑contamination risks. Sports nutrition plants typically handle multiple product varieties and formulations – whey protein, soy protein, pea protein, collagen, and more – with frequent changeovers between different materials. If the feeding stage lacks effective enclosed and clean design, cross‑contamination between different materials will directly affect product quality and regulatory compliance.
As a food ingredient consumed directly, protein powder places strict requirements on production equipment materials. All parts of the dust‑free feeding station that contact materials must meet food‑grade hygiene standards.
304/316L food‑grade stainless steel is the basic requirement. Gaofu's dust‑free feeding station uses 304 stainless steel for all material‑contact parts (316L available on request), with welded joints polished to eliminate dead corners – complying with food industry clean production standards. For production scenarios with higher corrosiveness or stricter hygiene requirements, 316L stainless steel – with its added molybdenum content offering superior resistance to chloride ions – is the preferred choice.
Polished surfaces prevent material residue. All material‑contact surfaces are mirror‑polished – the dead‑corner‑free design makes cleaning easy, thoroughly eliminating food safety risks caused by equipment contamination. Smooth surfaces resist material adhesion, reducing residue and bacterial growth.
Hygienic‑grade design – easy to clean, residue‑free. Gaofu's dust‑free feeding station is designed to hygienic standards – easy to clean, residue‑free. The equipment structure has no dead corners and supports quick disassembly and cleaning – effectively preventing cross‑contamination between different product types.
Compliant with GMP standards. The equipment is constructed of stainless steel and meets GMP standard requirements. For sports nutrition plants requiring GMP certification, whether equipment materials and design comply with GMP specifications is a mandatory selection criterion.
Dust control at the protein powder feeding stage cannot rely on end‑of‑pipe measures that deal with dust "after it is generated" – it must be addressed at the source by preventing dust from ever having the chance to disperse into the workshop air. Gaofu's dust‑free feeding station uses a "negative‑pressure dust collection + screening and impurity removal + enclosed conveying + automatic pulse‑jet cleaning" integrated dust‑free feeding technology.
Micro‑negative‑pressure dust collection system – actively capturing dust. Gaofu's dust‑free feeding station uses a micro‑negative‑pressure dust collection system that maintains negative pressure on the feeding platform. During operation, the fan creates negative pressure inside the working chamber, drawing dust generated during feeding into the filter system – preventing it from escaping outside the cabinet. The dust collection fan prevents material dust from dispersing during bag opening. This active collection method is more effective than simply relying on an enclosed structure – as soon as dust is generated, it is captured and processed, with no opportunity to disperse.
High‑precision filtration ensures clean emissions. Gaofu's dust‑free feeding station achieves filtration precision of 0.2‑0.3 μm , with working area dust concentration controlled to below 5 mg/m³ and near‑zero dust leakage. The feeding platform operates under negative pressure – no dust leakage, no material loss during feeding – protecting the clean environment. For ultra‑fine powders like protein powder, high‑precision filtration systems are key to ensuring workshop cleanliness.
Pulse‑jet automatic cleaning – sustained high‑efficiency operation. The equipment is equipped with a pulse‑jet cleaning device (Gaofu holds relevant patent technology, Patent No.: CN201821299592.1) that automatically cleans filter elements at regular intervals. The uniquely designed dual‑filter, pulse‑type vacuum reverse‑cleaning / fan dust collection structure thoroughly solves dust emission and material loss problems. Recovered dust falls into the hopper – no waste, while ensuring workshop cleanliness. This design ensures sustained filtration efficiency while minimising raw material waste.
Dust collection efficiency and material recovery. There is no material loss during feeding – protecting the clean environment. Collected dust is returned to the hopper through the pulse‑jet cleaning system, achieving material reuse and ensuring no raw material loss.
Protein powder may form lumps due to moisture absorption during storage and transport, or become contaminated with packaging debris, threads, and other foreign matter. Gaofu's dust‑free feeding station integrates a vibrating screening system (safety screen) – as material is fed, it passes through the screen to intercept packaging debris, thread impurities, and lumped material. The vibrating screen (safety screen) retains oversized material and foreign matter, ensuring only合格 material proceeds to the next process. This "feeding‑and‑screening‑in‑one" design ensures protein powder purity at the source, eliminating the need for a separate screening step and reducing equipment investment.
Gaofu's dust‑free feeding station can be seamlessly integrated with positive‑/negative‑pressure pneumatic conveying systems – material flows from bag opening, screening, and conveying to the next process (storage hoppers, reactors, packaging machines, etc.) in a fully enclosed system. No manual handling – eliminating secondary contamination. The system supports integration with PLC control systems – preset recipe parameters enable fully automated "feeding‑screening‑conveying‑metering" operation. The station can be connected to positive‑ or negative‑pressure conveying systems for material supply to the production line, achieving fully enclosed operation from feeding to conveying.
When selecting a dust‑free feeding station for protein powder processing, consider the following dimensions:
| Evaluation Dimension | Key Selection Points |
| Material requirements | All material‑contact parts must be 304 or 316L food‑grade stainless steel – polished surfaces, no dead corners, compliant with GMP standards |
| Dust collection system | Micro‑negative‑pressure dust collection – filtration precision 0.2‑0.3 μm, working area dust concentration ≤5 mg/m³, equipped with pulse‑jet automatic cleaning |
| Screening function | Built‑in vibrating screening module – capable of intercepting packaging debris, threads, lumps, and other foreign matter |
| Enclosed conveying | Seamless integration with positive‑/negative‑pressure conveying systems – fully enclosed material flow throughout the process |
| Hygienic design | Hygienic‑grade design – easy to clean, residue‑free – supporting quick disassembly and cleaning |
| Intelligent control | PLC control system – supporting recipe presets and fully automated operation |
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
Originated in the 1980s, Xinxiang Gaofu Machinery Co., Ltd. has developed into a leading enterprise after more than 40 years of steady development. The company holds authoritative national qualifications including National-level Specialized, Refined, Unique and Innovative Little Giant Enterprise, National Green Factory, National High-tech Enterprise, and National Intellectual Property Advantage Enterprise, and acts as the President Unit of the Vibration Industry Association.
It has established three provincial and municipal R&D platforms: Henan Provincial Industrial Design Center, Henan Provincial Engineering Technology Research Center for Intelligent On-line Screening System, and Xinxiang Municipal Fine Screening Engineering Technology Research Center. Up to now, Gaofu has obtained more than 500 patents covering invention, utility model and design. It has been awarded the Science and Technology Achievement Prize by the Ministry of Industry and Information Technology of China and has participated in drafting and formulating 4 national standards.
Gaofu’s product portfolio covers multiple series and hundreds of specifications, mainly including vibrating screening equipment, conveying equipment and intelligent automatic material handling systems. We provide one-stop overall solutions such as automatic feeding systems, powder supply systems, pneumatic conveying systems, metering and weighing systems, batching systems, micro-ingredient batching systems, water supply systems, oil supply systems, fluid conveying systems, central kitchen powder supply systems, powder conveying systems and feeding systems.
In terms of food production lines, our mature supporting systems cover two major categories: baking production lines and pasta production lines. The baking series includes production lines for bread, cake, crisp cake, croissant, toast, pizza, biscuit and hamburger. The pasta series includes intelligent production lines for steamed buns, stuffed buns, twisted rolls, sesame paste cakes, steamed dumplings, boiled dumplings, fried dough sticks and pies.
Gaofu products sell well across Greater China and are exported to more than 100 countries and regions worldwide, including Russia, Canada, the United States, New Zealand, Japan, Brazil and South Africa. Widely applied in food, pharmaceutical, chemical, metallurgical, building materials, mining, thermal power, environmental protection and other industries, our products have won the trust and recognition of over 10,000 global customers.
Adhering to the corporate mission of improving material quality and efficiency to meet customer needs, Gaofu has long-term stable cooperative relationships with global clients to achieve harmonious and win-win development. At present, Gaofu has become an official qualified supplier of many Fortune Global 500 enterprises, including CNPC, Sinopec, Sinochem Group, China Resources Group, Sinopharm Group, COFCO, China National Building Material, China Aerospace and Jinchuan Group.
