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 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 screening – "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."
The automatic screen cleaning advantage of Gaofu's QLSP series centrifugal sifter is not simply a matter of "adding a cleaning device" — it stems from a fundamental innovation in the working principle.
Continuous airflow scouring – persistent cleaning. The centrifugal sifter features a cylindrical screen housed inside the machine body. Material is mixed and atomised with airflow after passing through a screw conveying system, then enters the 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. Throughout this process, the screen is continuously scoured by the rotating airflow, achieving automatic self‑cleaning.
In simple terms: conventional screens passively "wait" for material to pass through, while the centrifugal sifter's screen is actively "scoured" by airflow — material is screened while airflow continuously cleans the screen. This "screening‑while‑cleaning" design keeps the screen fully permeable, eliminating the need for frequent manual cleaning stoppages.
De‑agglomeration function – breaking lumps. For lumped material formed by moisture absorption, the centrifugal sifter also features a re‑breaking function. Lumps are broken into individual particles before entering the screening zone, preventing screening efficiency loss and material waste caused by agglomerates. This function is particularly important for handling moisture‑prone sugar — sugar inevitably absorbs moisture and forms lumps during storage and transport, and the de‑agglomeration function resolves these lumps before they reach the screen, eliminating the risk of blinding at the source.
Reduced contact – lower adhesion. High‑speed airflow effectively breaks material agglomerates while reducing contact time and contact area between material and the screen — fundamentally lowering the probability of blinding. Sugar fines remain suspended in the airflow and cannot accumulate on the screen surface, naturally preventing adhesion and blinding.
For sugar processors, whether equipment can support large‑scale production depends on three key indicators: continuous running time, maintenance frequency, and throughput stability. The automatic screen cleaning advantage of the centrifugal sifter brings qualitative improvements across all three dimensions.
Significantly extended continuous running time. Conventional vibrating screens processing sugar often require stoppages for cleaning shortly after operation begins. The centrifugal sifter's automatic screen cleaning keeps the screen fully permeable, allowing the equipment to run continuously for extended periods. For sugar processors requiring 24‑hour production, this means higher equipment utilisation and more stable output.
Significantly reduced manual intervention. Automatic screen cleaning reduces the frequency of manual screen cleaning — operators no longer need to stop frequently to disassemble and clean screens, greatly reducing labour intensity and costs. It also reduces the risk of screen damage from improper manual cleaning.
Consistently stable screening efficiency. Conventional vibrating screens experience declining screening efficiency over time — as screens gradually blind, effective screening area shrinks. The centrifugal sifter's screening efficiency does not degrade with extended operation — the screen remains fully permeable, and screening accuracy and throughput remain consistently stable.
Fully enclosed negative‑pressure structure – no dust emission. 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.
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.
Food‑grade stainless steel construction. All sugar‑contact parts are made of food‑grade stainless steel — with polished surfaces, no dead corners, and easy cleaning — fully compliant with food‑grade 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.
