Over 10,000+ customers' choice, Focus on screening industry 40+ years
In powder processing workshops in the food, dairy, pharmaceutical and chemical industries, dust has never been a minor issue that can be solved by simply "sweeping it away."
Take the dairy industry as an example. 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 25 kg 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 are three risks that must be taken seriously:
Safety risk. 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.
Occupational health risk. 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). Long-term exposure places a continuous burden on the respiratory systems of operators.
Compliance risk. GB 14881 "National Food Safety Standard – 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 reduction in powder processing workshops requires a systematic solution covering source control, process enclosure, and end-of-line recovery.
The Gaofu Machinery milk powder feeding station builds a complete dust reduction solution for powder feeding around three core steps: "control the source, prevent leakage, and enhance recovery."
Source enclosure. The feed platform is located inside a sealed chamber. Bag opening and pouring operations are completed inside the chamber, physically isolating the external environment from the dust source. A dust cover and sealing strip are fitted at the top of the chamber to further suppress dust escape.
Negative pressure collection. The dust collection fan operates continuously, creating a stable negative pressure environment inside the feed platform and the sealed chamber – the 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.
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. 100% of the collected dust is recovered, and material loss can be controlled to ≤0.5%.
Core performance parameters: 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 national limit for airborne dust concentration inside workshops, providing reliable technical support for powder processing enterprises to meet environmental and GMP compliance requirements.
The Gaofu milk powder feeding station features a modular structural design, consisting of six core modules:
Feeding chamber. A fully enclosed structure with the feed platform located inside a sealed chamber. A large viewing port is provided on the chamber for real-time observation of the feeding status.
Negative pressure dust collection system. The dust collection fan operates continuously, creating a stable negative pressure environment at the feed port and drawing dust directionally into the filtration system.
High-precision filtration system. After dust-laden air enters the filtration system, the dust is intercepted by high-density filter cartridges, and clean air is discharged. The filter cartridge material can be flexibly selected according to milk powder fineness and hygiene requirements.
Pulse reverse-cleaning system. When the dust on the filter cartridge surface reaches a certain thickness, the system automatically triggers a compressed air pulse, shaking off the dust and recovering it into the hopper.
Built-in vibrating screen. A vibrating screen (safety screen) is installed below the feed hopper. After milk powder enters through the feed port, it first undergoes online screening – lumps, packaging debris, fibre impurities and other foreign matter are effectively intercepted, while acceptable material continues to the next process.
Discharge integration module. The equipment supports connection to positive or negative pressure conveying systems, with fully enclosed operation from feeding to conveying. The discharge port can be rotated 360° around the axis.
The milk powder feeding station is suitable for bag opening and feeding in a variety of dairy and powder food applications. Here are several typical application scenarios.
Scenario 1: Multi-Variety, Small-Batch Feeding of Infant Formula
Infant formula has a rich product line, and products for different stages and formulations require frequent changeovers. The feeding stage must both control dust and prevent cross-contamination between different formulations.
Key application points: The fully enclosed structure of the feeding station, combined with its dead-corner-free design, allows the equipment to be cleaned quickly and thoroughly when switching between formulations. Food-grade stainless steel eliminates metal contamination, and the fully enclosed sealing structure blocks external foreign matter and moisture, ensuring the purity of the formula milk powder. The equipment achieves feeding efficiency of 500 to 2,000 bags per hour, adapting to multi-variety, small-batch production rhythms.
Scenario 2: High-Volume Continuous Feeding of Adult Nutritional Powder
Adult nutritional powder, meal replacement powder and similar products have large volumes and frequent feeding, placing high demands on the continuous operation capability and feeding efficiency of the equipment.
Key application points: 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, with a single machine achieving feeding efficiency of 500 to 2,000 bags per hour – 3 to 5 times faster than traditional manual feeding. One machine can replace the feeding workload of 3 to 5 people.
Scenario 3: Feeding of High-Value Raw Materials Such as Whey Protein Powder
High-value raw materials such as whey protein powder and whey protein isolate have extremely high requirements for material loss control and hygiene standards.
Key application points: The pulse reverse-cleaning system recovers 100% of the collected dust, and material loss can be controlled to ≤0.5%. For high-value raw materials such as whey protein powder, reduced material loss directly translates into improved economic benefits. Food-grade 304 stainless steel and the dead-corner-free design ensure product purity.
Scenario 4: Raw Material Pre-Treatment for Baking Milk Powder
The baking industry uses milk powder and dairy powder as raw materials, and the feeding stage also faces requirements for dust control and foreign matter prevention.
Key application points: The built-in vibrating screen completes foreign matter interception at the feeding stage, effectively removing lumps and packaging debris from the milk powder. The fully enclosed structure prevents external foreign matter and moisture from entering the feeding system, ensuring raw material purity.
From the perspective of actual production conditions in powder processing workshops, 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 to meet the requirements for use in dust explosive environments.
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, and the equipment can run 24 hours continuously.
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.
