Over 10,000+ customers' choice, Focus on screening industry 40+ years
Food powders are consumed directly or indirectly – their screening process places extremely strict demands on equipment hygiene and safety. These requirements run through materials, structure, cleaning, and operation:
Materials must comply with food contact standards. Material selection for screen boxes, screens, feed hoppers, discharge outlets, and other components that come into direct contact with food powders is the first line of defence for food safety. Ordinary carbon steel equipment is prone to rusting after prolonged contact with food powders – rust particles contaminating the material directly affect product quality and food safety. Equipment materials must comply with food contact metal material standards to prevent metal ion migration into food.
Structures must be dead‑corner‑free and easy to clean. Food powders are nutrient‑rich – if the equipment interior has dead corners such as weld recesses or sharp corners, residual material cannot be completely removed and readily supports microbial growth at room temperature – directly affecting the quality and safety of subsequent batches. Equipment design must have no dead corners, with all welds finely ground.
Fully enclosed dust‑proof design – eliminating cross‑contamination. Food powder particles are fine and lightweight – during screening, they readily generate dust. Fine powder escaping through equipment gaps into the workshop air not only pollutes the production environment but can also cause cross‑contamination between different materials. Equipment must have good sealing performance to effectively prevent dust emission during screening.
Cleaning validation must be convenient and reliable. Food production regulations require that cleaning effectiveness can be verified. Smooth surfaces and rational structural design facilitate visual inspection and sampling – ensuring the effectiveness of cleaning and sanitisation procedures.
Gaofu's SZF series food powder linear vibrating screen strictly follows food industry hygiene standards in material selection:
304/316L food‑grade stainless steel construction. All food powder‑contact parts – screen boxes, screens, feed hoppers, discharge outlets, and other components – are made of 304 or 316L food‑grade stainless steel. 304 stainless steel offers excellent corrosion resistance and oxidation resistance – capable of withstanding attack from salts, acidic components, and moisture in food powders – ensuring no heavy metal contamination and no rust particle contamination during screening. 316L stainless steel – with its added molybdenum content – offers even better corrosion resistance, making it suitable for production scenarios with higher hygiene requirements.
Polished surfaces – no hygiene dead corners. Internal and external surfaces are finely polished to a sanitary‑grade finish. All welds are finely ground – no recesses, no gaps for material to hide. For the food and pharmaceutical industries, hygienic stainless steel models with rounded corners – no dead corners, easy to clean are available.
Compliant with GMP and food hygiene standards. The entire machine design complies with GMP (Good Manufacturing Practice) standards – meeting the clean production requirements of the food and pharmaceutical industries. The equipment is widely used in the food, pharmaceutical, chemical, and other industries.
While stainless steel solves the "what material" question, structural design determines the ultimate result of "whether it can be cleaned thoroughly":
Dead‑corner‑free design – eliminating material residue. The screen box interior features rounded transition design (radius ≥5mm) – replacing right‑angle designs – preventing food powder accumulation. All welds are smooth and flat – no protrusions, no recesses. Internal and external surfaces are easy to clean with no hygiene dead corners.
Quick‑release structure – more thorough cleaning. Screens use a clamp‑type fixing structure – removable and replaceable quickly without special tools. Components such as the feed hopper and discharge chute use quick‑connect connections – can be quickly detached. Each component can be cleaned independently – ensuring no residue. For companies requiring multi‑product changeover production, the quick‑release structure means shorter downtime and higher equipment utilisation.
Fully enclosed sealing structure – eliminating dust emission and external contamination. The equipment features a fully enclosed design with food‑grade silicone seals – effectively preventing dust emission during screening. The fully enclosed frame can be paired with a negative‑pressure dust extraction interface – further improving the workshop environment. The enclosed structure effectively isolates external moisture and impurities – preventing secondary material contamination.
Easy internal and external cleaning – no hygiene dead corners. The equipment structure is well‑designed – both internal and external surfaces are easy to clean. Cleaning is as simple as rinsing with water and wiping with a cloth – significantly reducing cleaning time. Smooth surfaces facilitate visual inspection and cleaning validation – complying with food industry GMP requirements for equipment cleaning validation.
Gaofu's SZF series food powder linear vibrating screen meets food‑grade high standards in screening performance while satisfying hygiene requirements:
High‑precision grading – precise, controllable fineness. The equipment uses dual vibrating motors operating in synchronised opposite directions – causing material to move forward in a parabolic bouncing motion on the screen surface – quickly loosening, stratifying, and passing through the screen. Screening accuracy reaches over 95% , with screening particle size covering 0.074‑5 mm and screen mesh covering 8‑120 mesh (up to 400 mesh) .
Multi‑deck grading – multiple specifications from one feed. The equipment supports flexible configurations of 1 to 5 screen decks , enabling a single machine to produce 2 to 6 different particle size fractions simultaneously. For food powder production, the upper deck intercepts lumps and foreign matter, the middle decks achieve different particle size fractions, and the lower deck acts as a safety screen to ensure finished product purity – one machine, multiple functions – reducing material transfers between units.
Large throughput – matching large‑scale production rhythm. Models cover SZF‑520 to SZF‑1540 , with throughput of 15‑500 t/h – suitable for both small‑batch fine screening and large‑scale continuous production line operations.
Stable operation – suitable for 24‑hour continuous production. The vibration motors are optimised for low noise, low energy consumption, and long service life – ensuring 24‑hour continuous stable 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
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.
