Over 10,000+ customers' choice, Focus on screening industry 40+ years
The physical characteristics of flour determine its screening difficulty. Flour particles are typically 80 mesh or finer, with some specialty flours requiring screening accuracy of 200 mesh or above. On conventional vibrating screens, flour screening faces three main issues:
Frequent screen blinding limits production efficiency. Fine flour particles tend to accumulate on the screen surface, and combined with static electricity generated by friction, they adhere around the mesh openings, gradually blocking them. Frequent stoppages for cleaning not only reduce throughput but also increase labour costs.
Dust emission affects the workshop environment. Flour is lightweight and easily becomes airborne during screening. Traditional open or semi‑enclosed screening equipment struggles to effectively control dust dispersion – affecting the workshop environment and causing material loss.
Difficulty balancing screening accuracy and throughput. To achieve high accuracy (e.g., 200 mesh or above) on conventional vibrating screens, throughput often has to be sacrificed; to increase throughput, accuracy suffers. Balancing accuracy and throughput has long been a challenge in flour screening.
Gaofu's QLSP series centrifugal sifter abandons the conventional vibrating screen's reliance on gravitational force, instead using air kinetic energy for screening. Its working principle is: material is mixed and atomised with airflow after passing through a screw conveying system, then enters a cylindrical screen drum. Inside the drum, rotor blades subject the material to both centrifugal force and propelling force, forcing the material to pass through the screen. Fine particles that pass through are discharged from the fines outlet, while oversize material travels along the screen wall and is discharged from the oversize outlet.
The core of this technical approach is that flour no longer relies on gravity to settle through the screen, but is "actively" carried through the screen by airflow. This fundamental difference gives the centrifugal sifter inherent advantages over conventional vibrating screens when processing ultra‑light, sticky, and easily agglomerated powders like flour.
Gaofu's QLSP series centrifugal sifter is an upgraded model based on the WSA series, specifically designed for 80 to 635 mesh ultra‑fine powders and developed for ultra‑light, sticky, electrostatic, and easily agglomerated materials. In flour screening applications, this series offers the following core features:
1. Self‑cleaning screen eliminates frequent stoppages
The root cause of screen blinding in conventional vibrating screens is that fines settle through the screen by gravity and accumulate on the mesh surface. The centrifugal sifter is different – the screen is continuously scoured by the rotating airflow, achieving automatic self‑cleaning. Material remains suspended in the airflow and cannot accumulate on the screen surface. This design effectively reduces stoppages caused by blinding and supports continuous production.
2. High screening efficiency and significantly increased throughput
The centrifugal sifter's output is 5 to 10 times or more than that of conventional vibrating screens, with screening efficiency reaching over 95% . For flour, QLSP series models offer processing capacities ranging from 3,000 to 5,000 kg/hour. Product fineness is precise with no oversize or mis‑grading. For flour processors, this means significantly more qualified finished product in the same amount of time.
3. De‑agglomeration function breaks up soft lumps
Flour may form soft lumps during storage or conveying. The QLSP series is equipped with a de‑agglomeration function that breaks up soft lumps. Lumps are dispersed into individual particles before entering the screening zone, preventing screening efficiency loss and material waste caused by agglomerates.
4. Fully enclosed negative‑pressure structure prevents dust emission
The equipment features a fully enclosed structure with no dust emission during operation. For flour – a material with a high fines content that is prone to dust – this design improves the workshop environment and reduces material loss. The equipment can be integrated into pneumatic systems and withstands 0.1 MPa of operating pressure , making it suitable for positive‑pressure systems in flour processing.
5. Easy cleaning, suitable for multi‑product production
Flour processors typically handle multiple product varieties. The QLSP series is easy to clean and suitable for small‑batch, multi‑product screening – effectively preventing cross‑contamination from material mixing. The equipment can operate as a single unit or in multiple units, supporting long‑duration continuous operation.
6. Food‑grade stainless steel construction meets hygiene standards
All parts that contact material are made of food‑grade stainless steel, with finely polished surfaces, no dead corners, and easy cleaning. The equipment complies with food production hygiene requirements and is suitable for screening flour, starch, and other food ingredients.
Gaofu's QLSP series centrifugal sifter is used in the following flour processing scenarios:
Flour grading: separating flour into different fineness grades to meet various food processing requirements;
Impurity removal screening: removing lumps, foreign matter, and off‑spec particles from flour;
Integration with positive‑pressure pneumatic systems: connecting in series with pneumatic conveying lines for seamless operation;
Multi‑product changeover production: suitable for flour mills with diverse product lines and small‑batch requirements.
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.
