Over 10,000+ customers' choice, Focus on screening industry 40+ years
The reason sugar performs poorly on conventional screening equipment lies in its unique physical properties:
Electrostatic attraction is the primary culprit. Sugar particles are very fine — during screening, friction between particles generates static electricity. Charged fine particles attract each other to form agglomerates while adhering firmly to the screen surface — ordinary screens quickly become "clogged."
Moisture absorption and lumping worsen blinding. Powdered sugar is highly hygroscopic — it readily absorbs moisture from the air during storage and screening, forming hard lumps of varying sizes. These lumps become wedged in the mesh openings, further aggravating blinding.
Fine powder agglomeration is difficult to break. Ultra‑fine sugar particles (e.g., above 200 mesh) have strong intermolecular forces — on conventional vibrating screens, they are difficult to disperse effectively, and material passes through the screen as agglomerates, resulting in extremely low passage efficiency.
Conventional vibrating screens rely on gravitational potential energy and mechanical excitation force to make material bounce on the screen surface — this works well for heavier granular materials. However, for ultra‑light, sticky, static‑prone powders like sugar, fine particles agglomerate under electrostatic forces before they even have a chance to reach the screen surface. The higher the vibration intensity, the more intense the friction, the stronger the static charge, and the faster the blinding occurs — creating a vicious cycle of "more vibration, more blinding."
The design philosophy of Gaofu's QLSP series centrifugal sifter is to fundamentally abandon traditional vibration modes and adopt an innovative aerodynamic design. It no longer relies on mechanical vibration to make material "bounce" through the screen — instead, it allows sugar powder to be screened within an airflow.
Its core working process can be broken down into three key steps:
Step 1: Screw conveying – airflow mixing and atomisation. After material enters the equipment through the screw conveying system, it is thoroughly mixed and atomised with high‑speed airflow. Sugar powder particles are dispersed by the airflow — agglomerated fines are broken down into individual particles suspended in the airflow. High‑speed airflow effectively breaks material agglomerates while reducing contact time and area between material and the screen.
In simple terms: sugar powder no longer enters the screening zone as agglomerates — it is suspended in the airflow as individual particles.
Step 2: Centrifugal propulsion – dual forces driving particles through the screen. The dispersed individual particles enter the cylindrical screen drum with the airflow. Through the rotation of the rotor blades inside the drum, the material is subjected to the dual action of centrifugal force and propelling force. Driven by these two forces, powder particles are propelled through the screen.
The essence of this process is: material does not "wait" to pass through the screen — it is "driven" through the screen. Qualified fine powder is discharged from the fines outlet, while oversize material travels along the screen wall and is automatically discharged from the oversize outlet.
Step 3: Continuous airflow scouring – automatic screen cleaning for sustained permeability. During screening, the airflow continuously scours the screen surface — fine particles cannot accumulate on the screen surface, achieving automatic screen cleaning. The screen remains open at all times, eliminating the need for frequent stoppages.
"Air‑carried material, air‑driven screening" — this is the most fundamental difference between the centrifugal sifter and conventional vibrating screens. 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.
Addressing the three major pain points of ultra‑fine sugar screening, the centrifugal sifter provides corresponding solutions:
1. Electrostatic agglomeration → airflow dispersion, preventing agglomeration at the source
Sugar powder entering the sifter is first thoroughly mixed and atomised with high‑speed airflow. Under the strong impact of the airflow, existing agglomerates are rapidly broken apart, and individual particles become suspended in the airflow. Material is thoroughly dispersed in the airflow, with no agglomeration. This process is completed before the material even contacts the screen — fundamentally preventing agglomerates from entering the screening zone.
2. Adhesion and blinding → cyclone scouring, automatic screen cleaning
On conventional vibrating screens, fine sugar powder tends to accumulate statically on the screen surface, gradually blocking the mesh. 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. Fine particles cannot adhere to the screen — blinding is fundamentally eliminated.
3. Ultra‑fine powder difficult to pass → centrifugal propulsion, forced passage
For ultra‑fine sugar above 200 mesh, conventional screening equipment often falls short. The centrifugal sifter uses the dual action of centrifugal force and propelling force to "propel" powder particles through the screen. Sugar particles no longer "wait" to pass through — they are "actively" driven through the mesh, achieving passage rates of over 95%.
Gaofu's QLSP series centrifugal sifter is specifically designed for 5‑500 mesh ultra‑fine powders, developed for ultra‑light, sticky, electrostatic, and easily agglomerated materials. In sugar screening applications, this series offers the following core features:
High screening efficiency. Screening efficiency reaches over 95% , with throughput 5‑10 times that of conventional vibrating screens. For sugar processors, this means significantly more合格 finished product in the same amount of time.
Wide screening fineness coverage. Screen mesh covers 5‑500 mesh. Whether for commercial sugar conventional screening or ultra‑fine baking sugar fine grading, suitable configurations are available.
Fully enclosed negative‑pressure structure prevents dust emission. The equipment features a fully enclosed structure with excellent sealing performance — no dust escapes during operation. For high‑value, easily airborne materials like sugar, this design improves the workshop environment and reduces material loss.
Food‑grade stainless steel construction. All sugar‑contact parts are made of food‑grade stainless steel — meeting food industry hygiene standards.
Compatible with pneumatic conveying systems. The QLSP series can be connected in series with positive‑ or negative‑pressure pneumatic systems — for plants with existing pneumatic conveying lines, seamless integration is achievable.
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.
