Over 10,000+ customers' choice, Focus on screening industry 40+ years
Conventional vibrating screens operate on the logic of "particle‑by‑particle screening" – every salt particle must bounce repeatedly on the screen surface until it finds a suitable mesh opening. When the material bed is thick and throughput is high, material congestion occurs on the screen surface, fine particles are buried under the layer and struggle to pass through, and screening efficiency drops.
The probability screen uses a fundamentally different logic. Probability screening theory states that: the residence time of particles on the screen surface is inversely proportional to their particle size – fine particles pass through the screen quickly, while particles close to the mesh size have extended residence time. The probability screen actively leverages this principle, allowing fine particles to "pass quickly" and coarse particles to "discharge rapidly," completing screening in an extremely short time.
The advantage of this principle in practice is: the screening time required for material is only 1/3 to 1/20 of that of conventional vibrating screens, and the processing capacity per unit screen area is 5 to 10 times that of conventional vibrating screens. For salt production lines requiring large‑volume continuous screening, this means the same equipment footprint can yield several times the output of traditional equipment.
In screening materials such as manufactured sand and natural sand, Gaofu's GLS series probability screen achieves 3‑6 times the throughput of conventional screens, with single‑machine hourly output reaching 10‑300 tonnes. For salt material grading, production capacity covers 15‑500 tonnes/hour.
This processing capacity is achieved through the following design features:
High‑inclination screen surface for rapid material passage. The probability screen's screen inclination is far greater than conventional screens (typically 15° to 30°), giving material high initial velocity at the feed end – the material bed rapidly thins and moves forward quickly. Salt particles move rapidly across the screen surface like "riding a slide" – fine particles have sufficient opportunity to pass through quickly, while coarse particles are discharged rapidly without accumulating on the screen surface.
Large‑aperture screen mesh effectively reduces blinding. The screen aperture is designed at 1.2 to 2.2 times the separation particle size. Because the mesh openings are larger than the target particles, particles are less likely to become wedged – greatly reducing blinding probability. Combined with high‑frequency low‑amplitude vibration and self‑cleaning screen surfaces, this effectively alleviates wedging caused by irregular salt crystal shapes.
Multi‑deck grading – multiple specifications from one feed. The equipment is configured with 2 to 5 screen decks , with screening mesh covering 5 mm down to 0.075 mm (200 mesh) . Coarse salt, medium salt, fine salt, and ultra‑fine salt powder are produced simultaneously in one feed – no need for multiple screening passes or machines in series.
Gaofu's GLS series salt probability screen is clearly applicable for grading granulated white sugar, raw salt, and edible salt. Whether for industrial salt or edible salt, suitable screen configurations are available.
Industrial salt screening – large throughput, continuous and stable. Industrial salt production typically operates in large‑volume continuous mode, demanding high processing capacity and operational stability from screening equipment. The probability screen's large single‑machine throughput enables it to match the capacity rhythm of industrial salt production lines. The equipment features a fully enclosed box structure with a dust extraction port on the top – effectively controlling salt dust emission during screening.
Edible salt screening – precise grading, hygienic and reliable. Edible salt has strict requirements for particle size uniformity and product purity. The probability screen's multi‑deck grading design precisely separates salt particles into different specifications – coarse salt (8‑20 mesh) for curing and fermentation, medium salt (20‑40 mesh) for everyday cooking, fine salt (40‑80 mesh) for seasoning production and baking. Material between decks does not mix, effectively eliminating size mixing and cross‑contamination.
Salt (sodium chloride) is corrosive to metals in humid environments. Gaofu's GLS series salt probability screen incorporates multiple targeted design features for durability:
Arched screen surface design extends screen life. The arched screen surface disperses impact forces by changing the material impact point angle. The external ratchet tensioning device allows operators to easily adjust screen tension from the outside, ensuring the screen remains flat at all times. Under normal operating conditions, continuous screen service life can be maintained for over 60 days.
Fully enclosed structure reduces dust and corrosion. The equipment features a fully enclosed box structure with good sealing – reducing salt dust corrosion on external equipment structures and preventing salt dust from entering bearings and other precision components, accelerating wear.
Integrated transport and installation for easy maintenance. The equipment is transported and installed as an integrated unit – only amplitude adjustment is required on site according to site conditions. Front and rear discharge ports use detachable design, making screen replacement relatively simple.
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.
