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 product safety that directly affects the health of end consumers. Throughout the entire milk powder production process, feeding is the first step and one of the most likely points where contamination risks can be introduced.
Under traditional manual feeding methods, operators open bags of milk powder and pour them into the feed port, causing dust to instantly disperse into the workshop air. This dispersed milk powder dust not only causes raw material loss but also settles on equipment surfaces, worktables and workshop corners, creating conditions for microbial growth and cross‑contamination. When different batches and different formulations of milk powder are produced alternately in the same workshop, the risk of cross‑contamination between residual material and new products becomes even more pronounced.
According to GB 14881 "National Food Safety Standard – General Hygienic Practice for Food Production", food manufacturers must effectively prevent cross‑contamination. Milk powder, as a highly nutritious substrate, once contaminated during production, will allow microorganisms to multiply rapidly, directly threatening product safety and consumer health.
The contamination risks in the milk powder feeding step come from two main sources: dust dispersion leading to environmental contamination and material cross‑contamination; and inappropriate equipment materials leading to metal leaching and material residue. The Gaofu milk powder feeding station is a professional machine designed specifically to address these two core risks.
In food production equipment, material selection is the first line of defence in ensuring food safety. Ordinary carbon steel equipment, after prolonged contact with milk powder and other high‑humidity, high‑nutrition materials, is prone to rusting and corrosion, and may even introduce rust and heavy metal ions into the product – an unacceptable quality risk for milk powder production.
All material‑contact parts of the Gaofu milk powder feeding station 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. The surfaces are mirror‑polished with low roughness (Ra ≤ 0.8μm), effectively reducing dust and microbial adhesion.
Three assurances provided by 304 stainless steel in milk powder feeding:
First, eliminating metal contamination. 304 stainless steel complies with food contact material safety standards and will not rust or leach metals even after prolonged contact with milk powder, ensuring the purity of the milk powder from the material source.
Second, easy cleaning and sanitation. The mirror‑polished surface is smooth and dense, so material does not readily adhere. The equipment can be quickly disassembled for cleaning with no dead corners, effectively preventing microbial growth and cross‑contamination between batches caused by milk powder residue.
Third, corrosion resistance and long service life. 304 stainless steel has good resistance to weak acids and alkalis that may be present in milk powder processing environments. The equipment maintains structural stability during long‑term operation without frequent replacement.
For production lines requiring even higher cleanliness, Gaofu also offers 316L stainless steel as an option to meet more stringent hygiene standards.
While material safety addresses the issue of "the equipment itself not contaminating the material", dust dispersion and cross‑contamination during milk powder feeding also need to be controlled through structural design.
The Gaofu milk powder feeding station uses a fully enclosed feeding structure. The feed platform is located inside a sealed chamber, and the operator completes bag opening and pouring inside the chamber, physically isolating the external environment from the dust source.
The dust collection fan creates a continuous negative pressure environment at the feed port – the milk powder dust generated at the moment of bag opening is directionally drawn into the filtration system before it can disperse. After the dust‑laden air passes through the 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.
Three contamination‑prevention assurances provided by the fully enclosed negative pressure structure:
Assurance 1: Preventing dust dispersion. Milk powder dust is locked inside the equipment and does not disperse into the workshop environment. Cross‑contamination through air between different production lines in the workshop is effectively blocked.
Assurance 2: Preventing foreign matter from entering. The fully enclosed structure effectively blocks dust, hair, insects and other foreign matter from the outside air, ensuring that the milk powder is not contaminated by external sources during feeding.
Assurance 3: Blocking moisture to prevent caking. Milk powder is highly hygroscopic. The fully enclosed structure effectively blocks external moisture, preventing the milk powder from absorbing moisture and caking during feeding.
The contamination‑prevention design of the Gaofu milk powder feeding station is not limited to the feeding step, but extends throughout the entire process from feeding to discharge.
Pulse reverse‑cleaning self‑cleaning system. The equipment is equipped with a pulse reverse‑cleaning dust removal device. When the dust on the filter cartridge surface reaches a certain thickness, the system automatically triggers a compressed air pulse, blowing the dust off the filter cartridges and recovering it into the hopper. The collected dust is 100% recovered into the hopper , and material loss can be controlled to ≤0.5% . This automatic reverse‑cleaning mechanism eliminates the risk of secondary contamination during manual filter cleaning.
Food‑grade seals. All seals on the equipment are made of food‑grade silicone material, which is heat‑resistant, corrosion‑resistant and odourless. The seals are non‑toxic and have no odour, ensuring that the entire feeding process does not contact any non‑food‑grade materials.
Dead‑corner‑free design. The internal walls of the equipment are designed with rounded corners and sloped surfaces to prevent material from accumulating in corners. The whole machine has a simple structure with no complex gaps or recesses, supporting rapid disassembly for cleaning.
Can be connected to upstream and downstream equipment. The Gaofu milk powder feeding station can be connected to positive or negative pressure conveying systems. From feeding to conveying, the material runs entirely inside enclosed pipelines without manual transfer, fundamentally eliminating the risk of material exposure to the external environment during transfer.
The Gaofu milk powder feeding station is suitable for feeding the following milk powder and dairy product raw materials:
Infant formula feeding. Infant formula has extremely strict hygiene standards, and any cross‑contamination may pose a threat to infant health. The fully enclosed structure and food‑grade stainless steel of the feeding station ensure product safety from the very first step.
Adult nutritional powder and whey protein powder feeding. Adult nutritional powder and whey protein powder are both high‑value, high‑hygiene powder materials. The feeding station ensures purity while keeping material loss at a low level, reducing waste of high‑value raw materials.
Baking milk powder and dairy ingredient feeding. The baking industry uses large quantities of milk powder with frequent feeding operations. The high feeding efficiency of the feeding station matches the feeding rhythm of large‑scale production lines while ensuring raw material purity.
Health foods and foods for special medical purposes feeding. Health foods and foods for special medical purposes have higher requirements for raw material purity and production process traceability. The food‑grade materials and fully enclosed structure of the feeding station meet the GMP production standards for such products.
From the perspective of actual production conditions in milk powder processing, the Gaofu milk powder feeding station delivers value in four dimensions:
Compliance value – Food‑grade 304 stainless steel and the fully enclosed negative pressure structure ensure that the equipment complies with GB 14881 food safety standards, food GMP standards and HACCP system requirements. Dust collection efficiency reaches 99.9%, and dust concentration is ≤0.1 mg/m³, meeting clean workshop standards. This helps enterprises present a more convincing compliance record during audits and factory inspections.
Quality value – 304 stainless steel eliminates metal contamination; the fully enclosed structure prevents dust dispersion and foreign matter entry; the pulse reverse‑cleaning system achieves 100% material recovery. From feeding to discharge, the milk powder does not contact the external environment, and the purity of the finished product 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 equipment can run 24 hours continuously, effectively supporting large‑scale production. Automated feeding reduces manual intervention, lowering the contamination risk from human operation.
Cost value – Material loss can be controlled to ≤0.5%; the fully enclosed structure reduces raw material waste; food‑grade stainless steel extends equipment service life and reduces long‑term replacement costs. Total operating costs are effectively controlled.
About Gaofu Machinery
Xinxiang Gaofu Machinery Co., Ltd. was originally founded in the 1980s. After more than 40 years of development, the company has become a "National Specialized and Sophisticated 'Little Giant' Enterprise", a "National Green Factory", a "National High-tech Enterprise", a "National Intellectual Property Advantage Enterprise", and the "President Unit of the Vibration Association". It also hosts the "Henan Provincial Industrial Design Center", the "Henan Provincial Engineering Technology Research Center for Intelligent Online Screening Systems", and the "Xinxiang Municipal Engineering Technology Research Center for Fine Screening". The company has been granted more than 500 invention, utility model and design patents, has received the "Science and Technology Achievement Award" issued by the Ministry of Industry and Information Technology, and has participated in drafting four "National Standards".
Gaofu's product portfolio covers several series and hundreds of varieties, including vibrating screening equipment, conveying equipment, and automated material handling systems. Its main products include one-stop solutions such as automatic feeding systems, powder feeding systems, pneumatic conveying systems, weighing and batching systems, minor ingredient batching systems, water supply systems, oil supply systems, fluid conveying systems, central kitchen powder feeding systems, powder conveying systems, and top-loading feeding systems. The food system production lines mainly include:
Bakery production lines: bread production line, cake production line, shortbread production line, croissant production line, toast production line, pizza production line, biscuit production line, hamburger production line;
Dough product production lines: steamed bun production line, stuffed bun production line, twisted roll production line, sesame paste baked bun production line, steamed dumpling production line, dumpling production line, youtiao (fried dough stick) production line, stuffed pancake production line.
Gaofu products are not only popular in Greater China but are also exported to more than 100 countries and regions, including Russia, Canada, the United States, New Zealand, Japan, Brazil, South Africa, etc. They are widely used in many industries such as food, pharmaceuticals, chemicals, metallurgy, building materials, mining, thermal power, and environmental protection, earning the trust and praise of over 10,000 customers worldwide. The company adheres to its mission: "Enhance material quality and efficiency, meet customer needs", walking side by side with customers for harmonious and win-win cooperation. Today, Gaofu has become an approved supplier to many Fortune 500 companies, including CNPC, Sinopec, Sinochem Group, China Resources Group, Sinopharm Group, COFCO Group, China National Building Material Group, China Aerospace, and Jinchuan Group.
