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Mirror‑Polished Powdered Sugar Rotary Vibrating Sieve – Easy to Clean and Sanitise, Compliant with Food Processing Plant Production Standards

Mirror‑Polished Powdered Sugar Rotary Vibrating Sieve – Easy to Clean and Sanitise, Compliant with Food Processing Plant Production Standards



  • The Cleaning and Sanitisation Challenge in Food Processing Plants

On cake, confectionery, solid beverage, and other food production lines, powdered sugar screening equipment faces unique cleaning challenges:


Strong sugar adhesion makes cleaning difficult. Powdered sugar is fine and readily adheres to equipment walls, welds, and dead corners during screening. If equipment surfaces are rough or have dead corners, residual sugar is difficult to remove completely — not only affecting the purity of subsequent batches but also potentially becoming a breeding ground for microorganisms.


Frequent product changeovers demand high cleaning efficiency. Food processing plants typically handle multiple product varieties — white sugar powder, rock sugar powder, moisture‑proof sugar powder, flavoured sugar powder, etc. — with frequent changeovers between different products. Equipment that is difficult to disassemble and time‑consuming to clean directly impacts line utilisation and production efficiency.


Increasingly stringent food safety regulations put pressure on cleaning validation. As food safety regulations continue to improve and regulatory oversight intensifies, food processors face ever‑higher cleaning validation requirements. Surface finish, elimination of dead corners, and cleaning effectiveness reliability have all become key focus areas in audits.


  • Mirror‑Polished Surfaces – The Structural Foundation for Cleaning and Sanitisation

The material and surface finish design of Gaofu's S49 series powdered sugar rotary vibrating sieve directly addresses the core cleaning and sanitisation needs of food processing plants.


304/316L food‑grade stainless steel – safe and contamination‑free.

All material‑contact parts are made of food‑grade 304 stainless steel (316L available on request) — fundamentally preventing heavy metal contamination and ensuring every grain of sugar is pure and safe. 304 stainless steel is an internationally recognised food‑grade material — non‑toxic and odourless — widely used in the food processing industry.


Mirror‑polished finish – surface roughness Ra≤0.4μm.

The equipment interior is finely mirror‑polished to a surface roughness of Ra≤0.4μm. In simple terms, this is a "mirror finish" — surfaces are as smooth as glass, preventing sugar and oils from adhering.


The practical value of mirror‑polished surfaces:

No material adhesion, no residue. Mirror‑polished surfaces are extremely smooth — sugar cannot adhere to equipment walls. Cleaning is as simple as rinsing with water and wiping with a cloth — significantly reducing cleaning time.


No dead corners. The entire machine is integrally polished — all welds are smooth with no material‑trapping dead corners — leaving no room for bacterial growth. All corners are rounded and polished — no recesses, no gaps for material to hide.


Easy cleaning validation. Smooth surfaces facilitate visual inspection and cleaning validation — complying with food industry GMP requirements for equipment cleaning validation.


Fully enclosed structure with food‑grade seals – eliminating cross‑contamination.

The equipment features a fully enclosed design — effectively preventing dust emission during screening, avoiding material cross‑contamination and external foreign matter intrusion. Paired with food‑grade silicone seals — the entire machine has excellent sealing performance. During operation, dust cannot escape — improving the workshop environment while reducing material loss.


Quick‑release structure – easy disassembly and cleaning.

Screens, seals, and other wear parts feature a quick‑release design — facilitating routine cleaning and maintenance — reducing downtime between batches. The entire machine has a compact structure — easy to disassemble and clean — reducing labour maintenance costs.


  • Beyond Cleaning – Balancing Screening Efficiency and Blinding Prevention

While the mirror‑polished surface solves the cleaning and sanitisation problem, the core requirements of sugar screening — high‑efficiency screening and blinding prevention — must also be ensured. Gaofu's S49 series sugar rotary vibrating sieve delivers excellent performance in both screening efficiency and blinding prevention while maintaining ease of cleaning:


Three‑dimensional vibration – high screening accuracy. The equipment uses a vertical vibration motor — converting rotary motion into horizontal, vertical, and inclined three‑dimensional compound motion — with material spreading in a spiral path for screening. Screening fineness reaches up to 600 mesh (0.02 mm) , with filtration precision down to 5 microns. Impurities and oversize material are automatically discharged, supporting continuous operation.


Bouncing ball cleaning system. Food‑grade silicone bouncing balls are installed below the screen — during operation, they continuously knock against the screen, automatically dislodging adhered sugar particles and keeping the screen fully permeable.


Optional ultrasonic cleaning system. For ultra‑fine sugar (above 200 mesh), an optional ultrasonic cleaning device can be added — using ultrasonic energy to break adhesion forces between particles — truly solving electrostatic adhesion and fine powder blinding.


Quick screen changes – completed in 3‑5 minutes. Quick‑release clamps or flange connections allow tool‑free access — screen changes take only 3‑5 minutes. For production lines requiring frequent changes between different sugar specifications, this feature significantly reduces downtime.


Multi‑deck grading – one machine, multiple functions. Supports flexible configurations of 1 to 5 screen decks — one feed completes impurity removal, coarse/fine grading, and multi‑particle separation. The upper deck removes fibre impurities, packaging debris, and large lumps; the middle decks separate sugar into coarse, medium, and fine grades; fine screening with the ultrasonic system easily achieves precise screening of ultra‑fine sugar above 200 mesh.


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  • Complete Value for Food Processing Plants

Gaofu's S49 series mirror‑polished powdered sugar rotary vibrating sieve delivers systematic value for food processing plants:


More efficient cleaning. Mirror‑polished surfaces resist material adhesion and have no dead corners — cleaning time is significantly reduced. Rinsing with water and wiping with a cloth completes the cleaning process.


More thorough sanitisation. The dead‑corner‑free design ensures sanitisers fully contact all surfaces — providing more reliable sanitisation and effectively preventing microbial growth.


Faster changeovers. The quick‑release structure with rapid screen change design reduces changeover downtime from "hours" to "minutes" — significantly improving equipment utilisation.


Easier compliance. The equipment design complies with GMP clean production requirements — meeting increasingly stringent food industry regulatory standards — helping food processors confidently pass various food safety audits.


More stable quality. The fully enclosed structure effectively prevents dust emission during screening — avoiding material cross‑contamination and external foreign matter intrusion — ensuring reliable purity for every batch of sugar.


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.


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