Over 10,000+ customers' choice, Focus on screening industry 40+ years
In the production of dairy products such as infant formula, adult nutritional powder and whey protein powder, feeding is the first process step. Milk powder particles are extremely fine, typically between 100 and 200 mesh, with some ultra-fine products reaching 500 mesh or finer. At the moment a worker opens a packaging bag and pours the milk powder into the feed port, a large amount of fine powder rapidly disperses into the air, forming a visible "dust cloud."
Behind this dust cloud lies a set of safety data that cannot be ignored. 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. The guidelines for identifying and preventing major hazard factors in the dairy manufacturing industry explicitly list "milk powder production sugar powder feeding, milk powder drying and packaging equipment areas" as major hazard zones, noting that friction, collision and static electricity in these areas can easily cause dust explosions. In actual cases, the feeding room of the second workshop at Mengniu Dairy's Chaozhou milk powder plant was specifically identified as having dust explosion venting risks, and a dedicated project was initiated to add explosion venting measures to the dust collection device.
In addition to safety risks, milk powder dust also creates an occupational health burden. Milk powder dust is classified as "other dust" and is controlled in accordance with the "Occupational Exposure Limits for Hazardous Agents in the Workplace – Part 1: Chemical Hazardous Agents" (GBZ 2.1-2019). The occupational disease hazard assessment report for Yili Dairy shows that milk powder dust detection values must be continuously monitored to ensure they remain below the national occupational exposure limits.
Feeding dust and material contamination are two core problems that must be solved simultaneously in powder feeding in food workshops.
The core logic for solving feeding dust dispersion is "control the source, prevent leakage, enhance recovery, and ensure traceability." With "enclosure + negative pressure + recovery" as the core, it matches the mainstream feeding scenario for bagged powders and reduces dust exposure from the root.
The Gaofu Machinery milk powder feeding station is a specialised machine designed around this logic. It integrates the two steps of "feeding" and "impurity removal" into a single machine, providing systematic assurance for clean milk powder production from the very first step.
Negative Pressure Dust Collection – Directional Dust Collection
The dust collection fan operates continuously, creating a stable negative pressure environment inside the feed platform and the sealed chamber – the milk powder dust generated at the moment of bag opening is drawn into the filtration system before it can disperse. After passing through high-density filter cartridges, clean air is discharged while the dust is collected.
Dust collection efficiency can reach 99.9%, and workshop dust concentration can be controlled to ≤0.1 mg/m³. This value is far below the general control requirements for dust concentration in food workshops, providing reliable technical support for dairy enterprises to meet environmental and GMP compliance requirements.
Pulse Reverse Cleaning – Filter Self-Cleaning and Material Recovery
The equipment is equipped with a pulse reverse-cleaning dust removal device. 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. This automatic reverse-cleaning mechanism delivers three benefits: the filter cartridges maintain high permeability without frequent manual cleaning; 100% of the collected dust is recovered into the hopper, and material loss can be controlled to ≤0.5%; and automatic reverse cleaning replaces manual ash removal, eliminating secondary dust dispersion.
Food-Grade Stainless Steel – Eliminating Metal Contamination
All parts of the equipment that contact material are made of food-grade 304 stainless steel, with 316L stainless steel available upon request. The lactose and lactic acid components in milk powder have a certain corrosive effect on metals. Ordinary carbon steel tends to rust after prolonged contact, and rust particles mixed into the product would directly cause a food safety incident. 304 stainless steel offers good corrosion resistance and oxidation resistance, does not release harmful substances into the material, and eliminates the risk of metal contamination at the material source.
Dead-Corner-Free Design – Preventing Microbial Growth
Milk powder is rich in protein and fat, making it an ideal medium for microbial growth. All internal corners of the equipment feature rounded transitions, and welds are ground smooth – no hygiene dead corners. The whole machine has a simple structure with nowhere for material residue to hide. The equipment supports rapid disassembly for cleaning, and the dead-corner-free structure allows cleaning operations to cover every area of the internal walls, effectively preventing cross-contamination during batch changeovers.
Fully Enclosed Sealing Structure – Blocking External Foreign Matter and Moisture
The equipment uses a fully enclosed structural design with food-grade silicone seals. The fully enclosed design provides three assurances: dust, hair, insects and other foreign matter in the outside air cannot enter the feeding system; external moisture is effectively blocked, preventing the milk powder from absorbing moisture and caking during feeding; and when switching between different batches or formulations of milk powder, the fully enclosed structure combined with the dead-corner-free design enables thorough cleaning and effectively isolates residual material.
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.
The explosion risk of milk powder dust is an unavoidable safety issue for dairy manufacturers. According to the requirements of the "Safety Regulations for Dust Explosion Prevention and Protection" (GB 15577-2018), equipment and facilities in dust explosion hazardous areas must comply with explosion-proof safety regulations.
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:
Safety value – With dust collection efficiency of 99.9% and dust concentration of ≤0.1 mg/m³, the risk of dust explosions is reduced at the source. The equipment can be equipped with an explosion-proof electrical control system, helping enterprises present a more convincing compliance record during safety assessments and occupational health inspections.
Quality value – The built-in vibrating screen completes foreign matter interception at the feeding stage; the fully enclosed structure prevents external foreign matter and moisture from entering the feeding system; and food-grade stainless steel eliminates metal contamination. The purity of the milk powder is systematically assured.
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.
