Over 10,000+ customers' choice, Focus on screening industry 40+ years
During the processing and use of powdered sugar, three major challenges constantly test production managers:
Challenge 1: Moisture absorption and lumping cause screen blinding. Powdered sugar is highly hygroscopic — it readily absorbs moisture from the air during storage and screening, forming hard lumps of varying sizes. Once these lumps enter the production line, they not only block the screen mesh but also cause formulation imbalances, affecting finished product quality. Powdered sugar absorbs moisture easily, and the screen mesh quickly becomes blocked by lumps, causing screening efficiency to drop sharply and requiring frequent stoppages for cleaning.
Challenge 2: Electrostatic adhesion causes material retention. Powdered sugar tends to generate static electricity during high‑speed motion, causing powder to adhere to the screen, equipment walls, and piping. This not only wastes material but also adds the麻烦 of frequent stoppages for cleaning, severely impacting production efficiency.
Challenge 3: High fineness requirements make grading difficult. From coarse granulated sugar to ultra‑fine icing sugar, different applications require different fineness levels. The baking industry needs powdered sugar as fine as flour; the confectionery industry requires specific particle sizes for icing; and the beverage industry needs fine sugar that dissolves quickly.
The reason powdered sugar is prone to moisture absorption and lumping lies in its physical and chemical properties. Sugar particles are fine with a large specific surface area — they have extensive contact with air and readily absorb environmental moisture. Once moisture is absorbed, the surface of the sugar particles dissolves to form a syrup film, and adjacent particles recrystallise and bond together during drying, forming hard lumps.
More troublesome is that fine sugar particles generate static electricity through friction during screening. Charged fines attract each other to form agglomerates. The combination of moisture‑induced lumps and electrostatic agglomeration makes powdered sugar significantly more difficult to screen than ordinary powdered materials. Conventional screening equipment processing sugar often suffers from "blinding shortly after starting" — frequent stoppages for cleaning not only reduce throughput but also increase labour costs.
With over 40 years of experience in screening, Gaofu Machinery has built a three‑line defence system in its S49 series rotary vibrating sieve specifically to address the core challenge of powdered sugar moisture absorption and lumping:
Defence Line 1: Fully Enclosed Structure — Isolating External Moisture
The primary condition for moisture absorption and lumping is "contact with moisture." Gaofu's powdered sugar rotary vibrating sieve features a fully enclosed structural design — from the feed inlet to the discharge outlet, all connections are sealed. Food‑grade seals are used at all joints, effectively preventing external moisture from entering the screening chamber and reducing the risk of material moisture absorption and lumping at the environmental level.
The value of the fully enclosed design goes beyond moisture protection: it also prevents dust emission, improves the workshop environment, and reduces material loss. For high‑value, easily airborne materials like powdered sugar, this design protects product purity while minimising raw material waste.
Defence Line 2: Bouncing Ball Cleaning System — Continuous Knocking, Real‑Time Cleaning
Even if moisture is isolated at the source, powdered sugar may still form slight lumps due to static electricity or trace moisture during screening. Gaofu's powdered sugar rotary vibrating sieve is equipped with food‑grade silicone bouncing balls beneath the screen. During operation, the balls continuously knock against the screen with vibration, automatically dislodging adhering sugar particles and "popping" lumps wedged in the mesh — keeping the screen fully permeable at all times.
This "screening‑while‑cleaning" design keeps the screen open throughout the screening process. The bouncing balls are made of food‑grade silicone — with good elasticity and wear resistance — complying with food contact material standards and causing no secondary contamination to the sugar.
Defence Line 3: Ultrasonic Cleaning System — Breaking Electrostatic and Ultra‑Fine Powder Adhesion
For ultra‑fine powdered sugar (e.g., above 200 mesh), conventional bouncing ball cleaning is no longer sufficient. Gaofu's powdered sugar rotary vibrating sieve can be optionally equipped with an ultrasonic cleaning system. The ultrasonic system generates high‑frequency, low‑amplitude mechanical energy that effectively disrupts electrostatic adhesion and surface tension between powder particles — allowing ultra‑fine powder to "float" and pass through the mesh, fundamentally solving the screen blinding problem.
The value of the ultrasonic cleaning system in powdered sugar screening is systematic. High‑frequency vibration keeps fine powder continuously dispersed — preventing accumulation on the screen surface; ultrasonic waves break the adhesion between powder and screen; and electrostatic adhesion and fine powder blinding are effectively resolved — particularly critical for ultra‑fine sugar screening above 200 mesh.
Moisture absorption and lumping in powdered sugar may seem like a "detail issue" at the screening stage — but it is a critical bottleneck affecting the efficiency and product quality of the entire production line. Gaofu Machinery's S49 series powdered sugar rotary vibrating sieve — with its fully enclosed moisture‑proof structure isolating moisture, bouncing ball continuous cleaning for real‑time blinding prevention, and ultrasonic high‑frequency vibration breaking electrostatic adhesion — provides bakeries and food processors with a systematic screening solution that addresses powdered sugar moisture absorption and lumping at the source.
All material‑contact parts are made of high‑quality 304 stainless steel — with polished surfaces, no dead corners, and easy cleaning — fully compliant with food‑grade hygiene standards. The fully enclosed structure effectively isolates external moisture — preventing secondary moisture absorption during screening.
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.
