Over 10,000+ customers' choice, Focus on screening industry 40+ years
Flour, as a typical ultra‑light, sticky, and easily agglomerated powder, presents numerous technical challenges during screening. 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 major problems: fine particles tend to accumulate on the screen surface and, combined with static electricity generated by friction, adhere around mesh openings, gradually blocking them. Flour is lightweight and easily becomes airborne during screening, affecting the workshop environment and causing material loss. To achieve high accuracy on conventional vibrating screens, throughput often has to be sacrificed – balancing accuracy and throughput has long been a persistent challenge in flour screening.
Against this backdrop, flour processors have placed higher demands on screening equipment in terms of both energy efficiency and screening accuracy. How to effectively control energy consumption while ensuring screening accuracy, and how to reduce operating costs while increasing throughput, have become key considerations for flour processors during equipment selection.
The 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 it 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 by airflow. The lightweight, easily floating nature of the powder is fully utilised – material is thoroughly dispersed in the airflow, breaking down agglomerates, so that individual particles pass through the screen sequentially with the airflow. This fundamental innovation gives the centrifugal sifter inherent advantages over conventional vibrating screens when processing ultra‑light, sticky, and easily agglomerated powders like flour.
The centrifugal sifter's energy efficiency advantage is not accidental – it stems from a fundamentally different working principle, reflected in systematic design across multiple levels.
1. Airflow replaces mechanical vibration, reducing drive energy
Conventional vibrating screens rely on high‑power motors to drive the entire screen body into violent vibration – energy consumption is concentrated in the mechanical motion itself. The vibration motor must continuously output significant excitation force to maintain the screen body's high‑frequency vibration, consuming considerable power. The centrifugal sifter uses air as the carrier and kinetic energy as the driving force – material is mixed with airflow and enters the screening chamber, where rotor blades generate centrifugal force to throw material toward the screen. The power required to drive the rotor is far less than that required to drive an entire screen body into violent vibration – this is the fundamental reason for the centrifugal sifter's lower energy consumption.
From an energy conversion perspective, the efficiency of converting electrical energy into mechanical vibration in conventional vibrating screens is limited by the damping losses of the vibration system. In contrast, the centrifugal sifter converts electrical energy into air kinetic energy with higher efficiency and lower energy loss. This difference accumulates into particularly significant energy savings over long‑term continuous operation.
2. Continuous operation reduces start‑stop energy losses
Conventional vibrating screens require repeated stoppages for cleaning due to frequent blinding – each start‑up and shutdown cycle adds extra energy consumption. The current surge during motor start‑up is far higher than during normal operation. Frequent start‑stop cycles not only increase energy consumption but also place additional burden on motors and electrical systems. The centrifugal sifter's screen is continuously scoured by rotating airflow, achieving automatic self‑cleaning. The equipment can run continuously for extended periods without frequent starts and stops. Continuous operation not only improves equipment utilisation but also avoids the energy waste and electrical system wear associated with repeated start‑stop cycles.
3. Air‑seal system reduces operating losses
The centrifugal sifter incorporates an air‑seal system that delivers purified air to both ends of the equipment. This effectively reduces operating temperatures, creates an air barrier around the bearings to prevent dust ingress, extends bearing service life, and reduces maintenance frequency. This design minimises energy losses caused by bearing wear and maintenance stoppages. Bearings operating in a well‑lubricated, clean environment experience lower friction resistance and higher energy transmission efficiency, indirectly reducing overall equipment energy consumption.
4. Integration with pneumatic systems enables resource sharing
The centrifugal sifter can be integrated with pneumatic conveying systems, directly connected into the air circuit to save resources. For flour processors with existing pneumatic conveying lines, this design eliminates the need for separate power and dust collection systems for the screening equipment, enabling intensive energy utilisation. Sharing air circuits not only reduces equipment investment but also lowers energy consumption per unit of product.
Energy efficiency does not mean sacrificing performance. The centrifugal sifter's fine screening capability is equally impressive – a key reason why flour processors are taking notice.
Wide screening fineness coverage. The centrifugal sifter covers screening fineness from 80 to 500 mesh, efficiently screening powders within this range. For flour processing – whether conventional flour screening or specialty flour fine grading – suitable configurations are available. From routine impurity removal screening of regular flour to fine grading of high‑precision specialty flours, the centrifugal sifter delivers consistent screening results.
High screening efficiency. Screening efficiency reaches over 95%, with precise product fineness and no oversize or mis‑grading. This means screened flour has uniform particle size and consistent fineness, providing stable raw material quality assurance for subsequent food processing. For flour processors, improved screening efficiency directly translates to higher yield rates and more stable product quality.
Airflow self‑cleaning ensures sustained accuracy. 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 rotating airflow, achieving automatic self‑cleaning. Material remains suspended in the airflow and cannot accumulate on the screen surface. This design not only reduces cleaning stoppages but also ensures that screening accuracy remains stable over long operating periods – precision does not degrade as the screen gradually becomes blocked.
De‑agglomeration function breaks up soft lumps. Flour may form soft lumps during storage or conveying. The centrifugal sifter 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, ensuring that every particle of flour is fully screened.
In actual flour processing applications, the centrifugal sifter's energy efficiency and fine screening performance have been well validated.
In flour screening scenarios, the centrifugal sifter's throughput is 5 to 10 times or more than conventional vibrating screens. This capacity advantage means that for the same screening task, the centrifugal sifter runs for a shorter time, with lower cumulative energy consumption. For flour processors with large daily throughput, the energy savings from this difference are substantial.
In terms of screening accuracy, the centrifugal sifter consistently achieves fine screening from 80 to 500 mesh, with precise product fineness and no oversize or mis‑grading. This is particularly important for processors that need to produce multiple fineness grades of flour – whether coarse, medium, or ultra‑fine, stable screening results can be achieved by adjusting the screen mesh.
In applications such as soft‑sugar coating powder recovery, the centrifugal sifter achieved efficient screening and recovery of ultra‑fine, high‑viscosity materials. Screening efficiency was high, throughput reached 5 tonnes per hour, and continuous airflow scouring thoroughly solved the problems of fine powder adhesion and agglomeration – enabling 24‑hour continuous operation without screen cleaning. This case fully demonstrates the centrifugal sifter's energy and accuracy advantages when processing challenging materials.
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.
