Over 10,000+ customers' choice, Focus on screening industry 40+ years
The reason sugar is "difficult to screen" lies in its unique physical properties:
Electrostatic adhesion – fine powder agglomeration. 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." The finer the sugar, the stronger the electrostatic effect, and the faster the blinding.
Moisture absorption and lumping – worsening blockage. Powdered sugar is highly hygroscopic. When ambient humidity is high, liquid bridges form between particles, causing micron‑sized particles to stick together. During storage and screening, it readily absorbs moisture from the air, forming hard lumps of varying sizes. These lumps become wedged in the mesh openings, further aggravating blinding.
Conventional vibrating screens – "more vibration, more blinding." Conventional vibrating screens rely on high‑frequency, high‑amplitude mechanical vibration to make material "bounce" through the screen — for ultra‑light, sticky, static‑prone sugar, this approach often backfires. 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." More critically, when processing ultra‑fine powders above 200 mesh, conventional vibrating screens experience a sharp decline in screening efficiency — the trade‑off between throughput and accuracy becomes increasingly difficult to reconcile.
The design philosophy of Gaofu's QLSP/QLSZ series centrifugal sifter is to fundamentally abandon traditional vibration modes and adopt an 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.
The 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.
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. 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 — the screen is scoured by the rotating airflow, achieving automatic self‑cleaning. Fine particles cannot accumulate on the screen surface — the screen remains fully permeable, eliminating the need for frequent stoppages. The equipment also features a de‑agglomeration function for powder lumps — lumps formed by moisture absorption are broken into individual particles before entering the screening zone.
In simple terms: sugar powder no longer "squeezes" through the screen as agglomerates – it is thoroughly dispersed in the airflow and passes through as individual particles "floating" with the airflow. This technical approach fundamentally solves the problems of electrostatic agglomeration and blinding.
1. Significantly increased throughput – 5 to 10 times higher capacity
This is the most direct competitive advantage of the centrifugal sifter. The centrifugal sifter's throughput is 5 to 10 times or more that of conventional vibrating screens. In ultra‑fine powder screening, this advantage is even more pronounced — for 200‑500 mesh ultra‑fine sugar, the centrifugal sifter's throughput is 8 to 10 times higher than conventional screening equipment.
For sugar processors, this means significantly more合格 finished product in the same amount of time. A single centrifugal sifter can replace the capacity of multiple vibrating screens — saving equipment investment while significantly reducing floor space.
2. High screening efficiency – over 95% passage rate
The centrifugal sifter achieves screening efficiency of over 95%. This is due to its "air‑carried material" screening approach — material is thoroughly dispersed in the airflow, and individual particles pass through the screen uniformly with the airflow. There is none of the efficiency loss caused by "material accumulation and local overloading" common in conventional vibrating screens. Screening accuracy is high, product fineness is precise, with no oversize or mis‑grading.
3. Completely eliminates blinding – automatic screen cleaning for continuous operation
The most frustrating problem of conventional vibrating screens processing sugar — screen blinding — is fundamentally solved on the centrifugal sifter. The screen is continuously scoured by the rotating airflow, achieving automatic self‑cleaning with no blinding. Material remains suspended in the airflow and cannot accumulate on the screen surface. This enables 24‑hour continuous production without frequent stoppages for cleaning.
4. Fully enclosed negative‑pressure operation – no dust, no pollution
The centrifugal sifter 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, reduces material loss, and complies with food production hygiene standards.
5. Wide fineness range – covers 80‑500 mesh in one machine
The centrifugal sifter can continuously screen powders ranging from 80 to 500 mesh. Whether for commercial sugar conventional screening or ultra‑fine baking sugar fine grading, suitable configurations are available. One machine covering such a wide fineness range means the equipment can handle different order requirements without frequent equipment changes.
1. Capacity matching
The centrifugal sifter's throughput is 5‑10 times that of vibrating screens, but different models still have varying processing capacities. Gaofu's QLSP/QLSZ series offers multiple specifications, with processing capacities ranging from hundreds of kilograms to several tonnes per hour. During selection, choose the appropriate model according to the production line's peak capacity requirements, while reserving some capacity margin.
2. Screening fineness
Sugar fineness ranges from 80 mesh to 500 mesh. The centrifugal sifter covers screen mesh from 5‑500 mesh. During selection, choose the appropriate screen configuration according to the target fineness of the product. For ultra‑fine sugar above 200 mesh, the throughput advantage of the centrifugal sifter is even more pronounced.
3. Material characteristics
Sugar is hygroscopic and static‑prone. The centrifugal sifter's design principles — airflow dispersion, cyclone scouring, automatic screen cleaning — are specifically suited to these material characteristics. During selection, confirm whether the equipment is equipped with a de‑agglomeration function — this is particularly important for processing moisture‑prone sugar.
4. Hygiene standards
Sugar is widely used in food applications — equipment materials must meet food‑grade hygiene standards. Gaofu's centrifugal sifter uses food‑grade 304 stainless steel for all material‑contact parts — with polished surfaces, no dead corners, and easy cleaning — fully compliant with food‑grade hygiene standards. The fully enclosed structure with no dust emission meets GMP clean production requirements.
5. System integration
The centrifugal sifter can be connected in series with positive‑ or negative‑pressure pneumatic systems — seamlessly integrating with existing pneumatic conveying lines. For plants with existing pneumatic conveying systems, this feature enables rapid equipment integration without major production line modifications.
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.
