Liquid coating adds significant value to animal feed. Enzymes, fats, molasses, and flavor enhancers are sprayed onto pellets to boost energy, improve palatability, or deliver medications. However, these expensive liquids only perform well when they coat a clean, dust‑free surface. A vibro separator—a rotary vibrating sieve from Gaofu Machinery—plays a crucial role in preparing feed for this coating stage. It removes the fines and broken particles that would otherwise waste coating liquid and compromise product quality.
Why dust‑free feed is essential for liquid coating
Liquid coating systems are designed to apply a precise, even layer of liquid to the surface of whole pellets. Fines and dust disrupt this process. They have a much larger total surface area than whole pellets. Consequently, they absorb a disproportionate amount of the liquid. This wastes expensive coating agents and leaves less for the intact pellets. In addition, fines that become saturated with liquid can clump together. These sticky masses can build up inside the coater, causing blockages and requiring cleaning stops. Furthermore, coated dust does not flow well. It can segregate during transport, leading to an inconsistent product at the farm.
A vibro separator placed directly before the liquid coater eliminates these problems. The machine removes dust and broken pieces so that only clean, whole pellets enter the coating chamber. As a result, the liquid coats the pellets evenly and efficiently. You use less coating agent to achieve the target application rate. The finished product flows freely and looks uniform.
Gentle, three‑dimensional motion preserves pellet integrity
The screening step must not damage pellets before they reach the coater. Aggressive, high‑frequency screens can crack pellets and create the very dust you are trying to remove. A Gaofu vibro separator uses a gentle three‑dimensional spiral motion. The feed rolls and tumbles across the mesh without bouncing or experiencing impact. Consequently, the machine removes existing fines without breaking whole pellets. In addition, operators can adjust the vibration amplitude by repositioning the eccentric weights. For fragile, low‑density pellets, a soft motion protects product integrity. For harder, denser pellets, a slightly stronger motion maintains throughput. Therefore, a single vibro separator handles a wide range of feed types gently and effectively.
Adjustable screening for different coating recipes
Different coating processes demand different carrier pellet sizes. An enzyme spray for broiler feed might require a fine crumble base. A fat coating for dairy feed works best on larger, robust pellets. A Gaofu vibro separator adapts easily. Operators can swap lightweight screen frames in minutes without tools. They can also fine‑tune the vibration amplitude to match the pellet size. For fine crumbles, a softer motion and a finer mesh produce the right carrier. For large pellets, a coarser mesh and a stronger motion maintain throughput. Consequently, one machine prepares feed for a wide range of coating applications.
Hygienic design prevents cross‑contamination
Many plants apply medicated coatings on some products and non‑medicated coatings on others. Complete cleanout between batches is essential to prevent carryover. A Gaofu vibro separator supports this requirement. All product‑contact parts are polished SUS304 or SUS316L stainless steel. Quick‑release clamps allow operators to open the machine without tools. The interior wipes clean in minutes. There are no crevices where residues can hide. As a result, there is zero risk of medicated dust contaminating a non‑medicated batch.
Enclosed, dust‑tight operation
The screening step itself should not generate airborne dust that could settle on downstream equipment. A Gaofu vibro separator operates fully enclosed. Continuous silicone gaskets seal the housing. A dust extraction port connects to the plant's central collection system. Consequently, dust is captured at the source. The surrounding area stays clean, and the freshly screened pellets move directly to the coater without recontamination.
Conclusion
A vibro separator plays a critical role in preparing feed for liquid coating. It removes fines that waste coating liquids, preserves pellet quality, and supports rapid product changeovers. Gaofu Machinery understands the demands of high‑value feed processing. Contact our sales engineering team today to discuss your liquid coating preparation needs or to arrange a material test.
Client Testimonials
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
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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. started back in the 1980s. Over more than 40 years, it has earned certifications 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 holds accreditation for 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, and received the Science and Technology Achievement Prize issued by the Ministry of Industry and Information Technology of China. It also 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 serve 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 the company exports them 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.
