Over 10,000+ customers' choice, Focus on screening industry 40+ years
On confectionery and bakery production lines, sugar takes various forms with different fineness requirements – from coarse granulated sugar to ultra‑fine sugar above 200 mesh – the range is vast. When processing these materials, conventional screening equipment often falls into a vicious cycle of "more vibration, more blinding." The higher the vibration intensity, the more intense the friction, the stronger the static charge, and the faster the blinding occurs.
The reason sugar is "difficult to screen" lies in its unique physical properties: electrostatic adhesion causes fine powder agglomeration, and moisture absorption and lumping worsen blinding. Charged fine particles attract each other to form agglomerates while adhering firmly to the screen surface – ordinary screens quickly become "clogged." Powdered sugar is highly hygroscopic – after absorbing moisture, it forms hard lumps of varying sizes that become wedged in the mesh openings, further blocking the screen.
The Centrifugal Sifter – Replacing "Mechanical Vibration" with "Air Kinetic Energy"
The design philosophy of Gaofu's QLSP 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.
Gaofu's food‑grade centrifugal sifter is used in the following specific application scenarios in the confectionery and baking industries:
Bakery production lines – sugar purification and grading. Used for cake surface dusting, dough mixing, icing preparation, and other processes. The fineness of powdered sugar directly affects the colour, texture, and appearance of baked products. Through airflow dispersion and centrifugal propulsion, the equipment effectively removes lumps and fibre impurities from sugar – ensuring that sugar entering the production process is fine, uniform, and reliably pure.
Confectionery production lines – icing and filling powder purification. Used for sugar coating and filling processes. The fineness and smoothness of icing directly determine the gloss and texture of confectionery surfaces. The fully enclosed structure of the centrifugal sifter effectively prevents dust emission during screening – avoiding material cross‑contamination and complying with food production hygiene standards.
Multi‑product changeover production – flexible adaptation to different fineness. From coarse sugar to ultra‑fine sugar, from white sugar powder to flavoured sugar powder – different products require different fineness levels. The QLSP series covers screen mesh from 5‑500 mesh – screens can be flexibly changed according to different product requirements, with one machine meeting multiple production needs. The equipment is easy to clean and suitable for small‑batch, multi‑product screening – effectively preventing cross‑contamination from material mixing.
Continuous production – 24‑hour stable operation. The equipment can operate as a single unit or in multiple units – supporting long‑duration continuous operation with high safety and reliability. For confectionery and bakery companies requiring 24‑hour production, this means higher equipment utilisation and more stable output.
Gaofu's QLSP series food‑grade centrifugal sifter fully considers the special requirements of food production in its materials and design:
304 food‑grade stainless steel construction – safeguarding food safety. All sugar‑contact parts are made of food‑grade 304 stainless steel – with polished surfaces, no dead corners, and easy cleaning. This fundamentally prevents heavy metal contamination, ensuring every grain of sugar is pure and safe.
Fully enclosed negative‑pressure structure – no 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.
High screening efficiency – significantly increased throughput. Screening efficiency reaches over 95% , with throughput 5‑10 times that of conventional vibrating screens. For sugar processors, this means significantly more qualified finished product in the same amount of time.
Automatic screen cleaning – no frequent stoppages. The screen is continuously scoured by the rotating airflow – automatic self‑cleaning, no screen blinding. Operators no longer need to stop frequently to disassemble and clean screens – greatly reducing labour intensity and costs.
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.
