Over 10,000+ customers' choice, Focus on screening industry 40+ years
Dust emission during feed screening mainly originates from the following areas:
Inadequate equipment sealing. In conventional screening equipment, gaps often exist at connections between the screen frame and the machine body, as well as at feed and discharge interfaces. Fine powder materials are "squeezed" through these gaps during vibration and disperse into the workshop air.
Air currents generated by material movement. During screening, material moves at high speed on the screen surface, driving surrounding air flow and creating localised air currents. Fine powder particles are carried by these air currents and escape through open sections or gaps in the equipment.
Open exposure during manual operations. Some screening equipment requires manual intervention during feeding, discharging, or cleaning – during these operations, material is exposed to the workshop environment, allowing dust to disperse naturally.
The dust control capability of Gaofu's enclosed feed rotary vibrating sieve is primarily reflected in its fully sealed structural design.
Totally enclosed machine – no dust emission. The equipment features a fully enclosed structure with efficient dust‑proof flexible connections, ensuring that material remains in a closed environment throughout the entire screening process. All potential leakage points – feed inlet, discharge outlet, inspection ports, and others – are securely sealed. The screening process takes place in a closed chamber – fine feed powder cannot escape through equipment gaps.
Food‑grade seals – eliminating leak points. All connections use high‑quality seals to ensure the airtightness of the entire screening system. For feed processing workshops, the reliability of seals directly determines the success or failure of dust control – aged seals can become "breakthrough points" for dust emission.
Fully enclosed stainless steel construction – suitable for demanding environments. The entire machine is constructed of stainless steel with a fully enclosed structure, effectively preventing dust emission and meeting the strict clean production environment requirements of the food, feed, and other industries.
The value of enclosed design goes far beyond simply "containing dust" – it delivers a series of cascading benefits:
Significantly improved workshop environment. The fully enclosed structure prevents dust from escaping during screening – workshop dust concentration is greatly reduced. Equipment surfaces no longer accumulate powder frequently, floor cleaning frequency is significantly reduced, and operator working conditions are fundamentally improved.
Greatly reduced material loss. Dust emission is essentially material loss. The enclosed design retains every particle of feed powder within the equipment, reducing raw material spillage and waste. For large‑scale feed producers, this loss control accumulates into substantial economic benefits over time.
Compliance with environmental and food safety requirements. The fully enclosed structure ensures no dust emission – meeting environmental production requirements. At the same time, the enclosed environment prevents external impurities from entering the material, safeguarding feed purity and safety.
Reduced dust explosion risk. Feed dust mixed with air at certain concentrations poses an explosion hazard. The enclosed design reduces workshop air dust concentration at the source, lowering dust explosion risks.
While the enclosed design solves the dust emission problem, the core mission of screening equipment remains high‑efficiency screening. Gaofu's S49 series enclosed feed rotary vibrating sieve delivers excellent screening efficiency and anti‑blinding performance while maintaining enclosure:
Three‑dimensional vibration for high screening accuracy. The equipment uses a vertical vibration motor as the excitation source – eccentric weights at the top and bottom generate horizontal, vertical, and inclined three‑dimensional compound vibration, causing material to move in a spiral path on the screen surface. Screening accuracy typically exceeds 90%.
Multi‑deck grading – multiple specifications from one feed. Supports flexible configurations of 1 to 5 screen decks , enabling a single machine to produce 2 to 6 different particle size fractions simultaneously – classification efficiency reaches 90% to 98%.
Anti‑blinding design – eliminating frequent stoppages. To address the blinding tendency of feed materials, the equipment is equipped with a bouncing ball cleaning system that continuously knocks the screen surface to prevent blinding. For ultra‑fine powders or electrostatic materials, an ultrasonic cleaning system is optionally available.
Quick screen changes – easy maintenance. A quick‑release clamp ring design allows screen changes in just 3‑5 minutes , and can be performed by general operators – significantly reducing downtime and maintenance costs.
Gaofu's enclosed feed rotary vibrating sieve is used in the following feed processing applications:
Livestock and poultry feed screening: Raw material cleaning and finished product grading for pig, poultry, duck, and other feeds – fully enclosed operation prevents dust emission
Aquatic feed screening: Fine powder or particle screening for fish, shrimp, and other aquatic feeds with strict particle size requirements – enclosed environment ensures product purity
Pet food screening: Grading of dry kibble – removing broken particles and dust
Premix and additive screening: Fine screening of vitamins, trace minerals, and other premixes – preventing cross‑contamination
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.
