Over 10,000+ customers' choice, Focus on screening industry 40+ years
Milk powder, as a core raw material in infant formula, dairy products, baking and health foods, has production hygiene and safety that directly affect the health of end consumers. In the entire milk powder production process, feeding is the first step and one of the most difficult stages for dust control.
Under traditional manual feeding methods, operators open bags of milk powder and pour them into the feed port, causing large amounts of fine powder to instantly disperse into the workshop air, forming a visible "dust cloud." The hazards of milk powder dust are multi‑dimensional. At the occupational health level, milk powder dust is classified as "other dust," and long‑term exposure places a continuous burden on the respiratory systems of operators. Measured data show that at some dairy enterprises, milk powder dust concentrations at feeding stations have exceeded occupational exposure limits. At the safety level, milk powder is listed in the "Catalogue of Key Combustible Dusts in the Industrial and Trade Sectors," and its dust poses an explosion risk when it reaches certain concentrations in the air. Sugar powder feeding and milk powder drying areas are classified as major hazard zones in the dairy manufacturing industry. At the compliance level, GB 14881 "General Hygienic Practice for Food Production" clearly requires that equipment in clean processing areas must not generate additional dust. The dust dispersion from traditional open feeding has become a prominent obstacle for food enterprises in passing GMP audits and environmental inspections.
Dust control at the milk powder feeding stage requires a systematic solution covering source control, enclosed processing, and end‑of‑line recovery.
The Gaofu Machinery milk powder feeding station integrates three core technologies – negative pressure dust collection, vibrating screening and intelligent control – to solve the dust dispersion problem at the source.
Fully Enclosed Negative Pressure Feeding – Locking Dust at the Source
The equipment uses a fully enclosed bag‑opening and feeding structure, with the feed platform located inside a sealed chamber. The dust collection fan operates continuously, creating a stable negative pressure environment at the feed port – the milk powder dust generated at the moment of bag opening is drawn into the filtration system before it can disperse.
Core performance parameters: Dust collection efficiency reaches 99.9%, and workshop dust concentration can be controlled to ≤0.1 mg/m³. This value is far below the national limit for airborne dust concentration inside workshops, and far better than the occupational exposure limit requirements for feeding stations in the dairy industry. The dust collection system is equipped with a pulse reverse‑cleaning dust collector. When the dust adhering to the filter cartridges reaches a certain thickness, the system automatically triggers a compressed air pulse, shaking off the dust and recovering it into the hopper. 100% of the collected dust is recovered, and material loss can be controlled to ≤0.5%. For high‑value raw materials such as milk powder, reduced material loss directly translates into improved production efficiency.
Built‑In Vibrating Screen – Impurity Removal Completed Simultaneously with Feeding
Milk powder raw materials may contain foreign matter such as packaging threads, sealing debris and moisture‑induced lumps. The Gaofu feeding station is equipped with a vibrating screen (safety screen) below the feed hopper. After material passes through the feed port, it first undergoes online screening – lumps and debris larger than the mesh openings are effectively intercepted, while acceptable material continues to the next process.
This design integrates the two steps of "feeding" and "impurity removal" into a single machine. Milk powder completes foreign matter interception before entering the production line, reducing the risk of finished product foreign matter complaints at the source. Physical hazards in milk powder production – string ends, paper debris, metal fragments – are effectively removed at this stage.
Intelligent Control and Automated Integration – Reducing Manual Intervention
The equipment supports PLC intelligent control , allowing preset feeding parameters and interlocked operation with upstream and downstream equipment. Feeding efficiency can reach 500 to 2,000 bags per hour , which is 3 to 5 times faster than traditional manual feeding. One machine can replace the feeding workload of 3 to 5 people, reducing labour costs by over 60%.
The equipment supports connection to positive or negative pressure conveying systems. From feeding to conveying, the material runs entirely inside enclosed pipelines without manual transfer, achieving fully automated integration throughout milk powder production.
Milk powder is used directly in food processing, so equipment materials and structural design must comply with food production hygiene standards.
Food‑grade stainless steel. All parts of the Gaofu feeding station that contact material are made of food‑grade 304 stainless steel. 304 stainless steel offers good corrosion resistance and oxidation resistance, and does not release harmful substances into the material. For production lines requiring even higher cleanliness, 316L stainless steel is available.
Dead‑corner‑free design. All internal corners feature rounded transitions, and welds are ground smooth – no hygiene dead corners. Milk powder is rich in nutrients, and residual material can easily breed bacteria and mould at room temperature, contaminating subsequent batches. The dead‑corner‑free structure allows the equipment to be cleaned quickly and thoroughly, effectively preventing cross‑contamination.
Fully enclosed moisture‑proof design. Milk powder is highly hygroscopic. The fully enclosed structure effectively blocks external moisture from entering the feeding system, preventing the milk powder from absorbing moisture and caking during feeding. Seals are made of food‑grade silicone, non‑toxic and odourless, ensuring that the entire feeding process does not contact any non‑food‑grade materials.
The explosion risk of milk powder dust is an unavoidable safety issue for dairy manufacturers. According to the guidelines for identifying and preventing major hazard factors in the dairy manufacturing industry, factors such as friction, collision and static electricity in sugar powder feeding, milk powder drying and packaging equipment areas can easily cause dust explosions. Electrical devices in relevant areas must meet explosion‑proof rating requirements, and dust collection system design must be calculated so that dust concentration in ducts does not exceed 25% of the lower explosive limit.
The Gaofu feeding station fully considers the explosion‑proof requirements of milk powder production in its safety configuration. The equipment can be equipped with an explosion‑proof electrical control system to meet the requirements for use in dust explosive environments. The design of the pulse reverse‑cleaning dust collection system ensures that dust on the filter cartridge surface is removed promptly, preventing dust accumulation inside the equipment. The fully enclosed structure physically limits the spread of dust, reducing the probability of dust explosions.
From the perspective of actual production conditions in milk powder processing, the Gaofu milk powder feeding station delivers value in four dimensions:
Compliance value – With dust collection efficiency of 99.9% and dust concentration of ≤0.1 mg/m³, the equipment meets the requirements of GB 14881 food production hygiene standards, food GMP standards and dust explosion‑proof safety regulations. This helps enterprises present a more convincing compliance record during food safety audits, environmental inspections and occupational health assessments.
Quality value – The built‑in vibrating screen completes foreign matter interception at the feeding stage, effectively removing lumps, debris and packaging debris from the milk powder. The fully enclosed structure prevents external foreign matter and moisture from entering the feeding system, systematically ensuring the purity of the milk powder.
Efficiency value – A single machine achieves feeding efficiency of 500 to 2,000 bags per hour, 3 to 5 times faster than traditional manual feeding. The pulse reverse‑cleaning self‑cleaning mechanism ensures continuous high‑efficiency operation of the dust collection system without frequent stoppages for cleaning. The equipment can run 24 hours continuously, effectively supporting large‑scale production.
Cost value – Labour input is reduced by over 60%; material loss is controlled to ≤0.5%; food‑grade stainless steel extends equipment service life. For high‑value raw materials such as milk powder, reduced material loss and lower labour costs directly translate into economic benefits.
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.
