Over 10,000+ customers' choice, Focus on screening industry 40+ years
Nut milk is one of the fastest‑growing categories in the plant‑based beverage market. From almond milk and walnut milk to cashew milk and macadamia milk, different nut raw materials give beverages distinct flavour profiles, but consumers share a common expectation for nut milk – smooth, refined and free from grittiness.
However, the refinement of nut milk is not a fixed standard. Different nut milk varieties, different consumption scenarios and different target audiences have completely different requirements for texture refinement. The grinding fineness of conventional nut milk typically exceeds 200 mesh, while premium blended nut beverages can require a fineness of 2 to 5 microns. Freshly pressed walnut milk, for example, can demand filtration as fine as 500 mesh.
From 200 mesh to 500 mesh, such a wide range means that nut milk producers must be able to flexibly adjust filtration accuracy according to product positioning. The era of "one screen fits all" is over. When product lines extend from mainstream to premium offerings, and when raw materials extend from single nuts to blended nuts, screening equipment must have the capability to "switch on demand."
The Gaofu S49 series nut milk rotary vibrating sieve with interchangeable screens is a solution designed specifically for this requirement. With a quick‑change screen structure for flexible mesh switching, three‑dimensional gyratory motion for filtration accuracy, and food‑grade stainless steel for hygiene safety, it enables nut milk producers to flexibly control beverage texture standards according to product positioning.
From grinding to filling, filtration is a critical process step that runs throughout nut milk production.
After grinding, the nut slurry contains a large amount of solid impurities: nut fibre, insufficiently ground kernel particles, skin fragments, and flocculent agglomerates formed by protein and fibre. If these impurities are not effectively removed, they will directly affect the taste and stability of the nut milk. More critically, different nut raw materials and different product positioning require different filtration accuracy.
Different nuts, different fineness. Almonds are relatively hard and produce coarser fibre after grinding, requiring finer screens to remove fibre impurities. Cashews are soft and produce a relatively fine slurry, with less demanding screen mesh requirements. If the same machine can only use one type of screen, it cannot accommodate the filtration requirements of different nut raw materials.
Different products, different standards. Mainstream nut milk products prioritise cost‑effectiveness and can accept relatively loose filtration accuracy while maintaining basic texture. Premium nut milk products pursue ultimate smoothness and refinement, requiring higher filtration accuracy. If a production line has only one filtration accuracy, it cannot simultaneously cover product lines of different positioning.
Different batches, different conditions. The moisture content and oil content of nut raw materials may vary between batches, affecting the viscosity and impurity content of the slurry after grinding. If the filtration equipment cannot flexibly adjust according to raw material conditions, it will either fail to be fine enough when needed, or waste capacity when coarser filtration would suffice.
The interchangeable screen design is precisely intended to meet this "precision flexibility" requirement. One machine, multiple screens, switched on demand – from coarse de‑slagging to fine purification, from mainstream to premium products, from almond milk to cashew milk – flexible adaptability.
The quick‑change screen capability of the Gaofu S49 series nut milk rotary vibrating sieve comes from its unique mother‑child screen frame structure.
Mother‑Child Screen Structure: Change Screens Without Changing Frames
Traditional screening equipment uses an integrated screen and frame structure. Changing the screen requires removing the entire frame, peeling off the old screen, laying a new screen, and refastening – a time‑consuming process that typically takes over half an hour. When switching between different products, the equipment is down for extended periods, and line efficiency is significantly compromised.
The Gaofu mother‑child screen frame structure completely simplifies this process. The mother screen provides structural support and is permanently fixed to the frame for long‑term use. The child screen (working screen) is responsible for screening and can be replaced independently. When changing the screen, simply remove the clamp ring of that deck, take out the screen frame, remove the old child screen, lay a new child screen, and clamp it tight. No other components need to be disassembled, and the mother screen does not need to be replaced.
Screen change time is reduced from over half an hour to just 3 to 5 minutes. For nut milk production lines that need to switch between different mesh sizes frequently, this efficiency improvement directly translates into increased capacity.
One Machine, Multiple Screens, Switched on Demand
The Gaofu S49 series rotary vibrating sieve supports 1 to 5 screen decks , enabling simultaneous separation into 2 to 6 grades. In nut milk filtration, this multi‑deck configuration provides great flexibility:
Coarse filtration deck (80‑120 mesh): Removes large nut fibre and skin fragments – suitable for pre‑filtration or mainstream products
Medium filtration deck (150‑200 mesh): Achieves the refinement of conventional nut milk – suitable for most product lines
Fine filtration deck (300‑500 mesh): Achieves the ultimate refinement of premium nut milk – suitable for premium products and specific nut raw materials
One material enters, screen combinations are selected as needed, and products of different refinement levels are discharged from different outlets. One machine, multiple screens, flexible switching – enabling nut milk producers to achieve "filtration on demand."
While quick‑change screens solve the problem of "flexible switching," the core task of nut milk filtration – efficient solid‑liquid separation – also requires solid technical support.
The Gaofu S49 series nut milk rotary vibrating sieve operates on the three‑dimensional gyratory motion principle. The equipment uses a vertical vibration motor as the excitation source, with eccentric weights installed at the upper and lower ends of the motor shaft converting the rotational motion into compound vibration in horizontal, vertical and tilting directions, which is then transmitted to the screen deck. By adjusting the phase angle of the upper and lower weights, the motion trajectory of the material on the screen surface can be changed to suit nut slurries of different viscosities and impurity contents.
The value of this three‑dimensional gyratory motion for nut milk filtration lies in three aspects:
First, rapid spreading of the slurry for efficient passage through the screen. The high‑frequency, low‑amplitude excitation force causes the highly viscous nut slurry to spread quickly into a thin layer on the screen surface, reducing flow resistance and allowing the liquid to pass through the screen rapidly. The equipment can achieve filtration precision down to 5 microns and screening fineness up to 600 mesh or 0.02 mm. From 80‑mesh coarse filtration to 500‑mesh fine purification, a single machine with multiple screens covers the full range of requirements.
Second, automatic discharge of impurities for continuous operation. Solid impurities retained on the screen surface – such as nut fibre and kernel particles – move along the screen under vibration and are automatically discharged from the reject port. The equipment can run 24 hours continuously without frequent stoppages for cleaning.
Third, adjustable screening accuracy for different materials. By adjusting the phase angle of the motor weights, the motion trajectory and residence time of the material on the screen surface can be changed to suit the filtration requirements of different nut raw materials and different slurry concentrations.
Nut milk is consumed directly as a beverage, so the material and hygiene standards of the filtration equipment are non‑negotiable. The Gaofu S49 series nut milk rotary vibrating sieve incorporates systematic design in the following areas:
Food‑grade stainless steel. All material‑contact parts are made of food‑grade 304 stainless steel , with 316L stainless steel available upon request. Surfaces are finely polished to meet hygiene requirements. Welded joints are seamlessly polished with no hygiene dead corners. Seals are made of food‑grade silicone, temperature‑resistant, aging‑resistant, and compliant with food contact safety requirements.
Fully enclosed sealed structure. The equipment has a fully enclosed structure, effectively preventing liquid splashing and dust escape during screening, and avoiding cross‑contamination. For high‑nutrition, easily contaminated materials such as nut milk, the fully enclosed design physically ensures product purity.
GMP‑compliant construction. The equipment meets food GMP standards and HACCP certification requirements, providing equipment‑level support for nut milk producers to pass food safety audits.
Optional screen materials. Screens are made of stainless steel woven mesh , with different materials and apertures available according to material characteristics, ensuring both filtration accuracy and food safety.
From the perspective of actual production conditions in nut milk processing, the Gaofu S49 series nut milk rotary vibrating sieve with interchangeable screens delivers value in four dimensions:
Flexibility value – The mother‑child screen frame structure enables screen changes in just 3 to 5 minutes. One machine, multiple screens, switched on demand from 80 mesh to 500 mesh. The same machine can simultaneously cover the production needs of both mainstream and premium nut milk products, without requiring multiple sets of filtration equipment for different product lines.
Quality value – By flexibly changing screens, the filtration accuracy of nut milk is precisely controlled. Mainstream products use 150‑200 mesh screens to ensure basic texture, while premium products switch to 300‑500 mesh screens for ultimate refinement. The finished nut milk is smooth, refined and free from grittiness, with improved product grade and market competitiveness.
Efficiency value – Quick screen changes reduce product changeover time from over half an hour to 3 to 5 minutes; three‑dimensional gyratory motion ensures stable and efficient throughput; impurities are automatically discharged without manual intervention; the equipment can run 24 hours continuously. The overall capacity of the production line is fully utilised.
Hygiene value – Food‑grade 304/316L stainless steel, dead‑corner‑free design and fully enclosed structure make the equipment easy to clean with no material residue. This helps enterprises meet the hygiene requirements of food GMP and HACCP systems.
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
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.
