Over 10,000+ customers' choice, Focus on screening industry 40+ years
The Gaofu S49 series starch rotary vibrating sieve uses a vertical vibration motor as the excitation source. Eccentric weights installed at the upper and lower ends of the motor shaft convert the rotational motion into a horizontal, vertical and tilting three‑dimensional compound vibration – known as “three‑dimensional vibration”. This compound vibration is transmitted to the screen deck, causing the material to move in a spiral outward trajectory on the screen surface.
This three‑dimensional motion offers three core advantages for starch screening:
First, thorough material loosening and natural breaking of lumps. Starch continuously tumbles and shifts under three‑dimensional vibration, and moisture‑induced lumps are naturally broken apart during the motion, avoiding accumulation and blockage on the screen surface.
Second, extended screening path and high accuracy. The material travels along a spiral trajectory on the screen surface, giving every starch particle more opportunities to contact the screen. Screening accuracy can reach up to 600 mesh (0.02 mm) and filtration precision down to 5 microns.
Third, adjustable motion trajectory for different starch characteristics. By adjusting the phase angle of the upper and lower eccentric weights, the motion trajectory and residence time of the material on the screen surface can be changed. For different starch varieties, moisture contents and fineness levels, the parameters can be flexibly adjusted to achieve the optimal screening effect.
1. Food‑Grade Stainless Steel for Hygiene Safety
Starch is widely used in food and pharmaceutical applications, so the equipment material must meet strict hygiene standards. All material‑contact parts of the Gaofu starch rotary vibrating sieve are made of food‑grade 304 stainless steel, with 316L stainless steel available upon request. The surfaces are mirror‑polished (Ra ≤ 0.8μm) with no welded dead corners. The equipment has a simple structure, no hygiene dead corners, and supports rapid disassembly for cleaning, meeting food‑grade production hygiene requirements.
2. Fully Enclosed Structure – Dust, Moisture and Contamination Protection
During starch screening, dust escape causes both material loss and workshop contamination. The Gaofu starch rotary vibrating sieve has a fully enclosed sealed structure with food‑grade silicone seals, and screening takes place inside a sealed chamber. The fully enclosed design provides three assurances: it prevents dust escape, improving the workshop environment; it effectively blocks external moisture, preventing secondary moisture absorption of the starch during screening; and it prevents foreign matter from entering the screening system, ensuring the purity of the starch.
3. Multiple Anti‑Blinding Mechanisms – Tackling Caking and Screen Blinding
To address the core problems of caking and screen blinding in starch, the Gaofu starch rotary vibrating sieve incorporates multiple anti‑blinding solutions:
Bouncing ball cleaning system. Food‑grade silicone balls are placed under the screen deck. During screening, the balls continuously tap the screen cloth, dislodging adhering starch and keeping the mesh clear.
Mother‑child screen frame structure. The mother screen provides structural support, while the fine screen (working screen) performs the screening. When the fine screen wears out or a different mesh size is needed, only the fine screen needs to be replaced; the mother screen can be used for a long time. Screen changes take only 3 to 5 minutes without special tools.
Adjustable vibration parameters. By adjusting the phase angle of the eccentric weights, the motion trajectory of the material on the screen surface is optimised, fundamentally reducing the residence time and adhesion probability of starch on the screen.
For ultra‑fine starch or more sticky materials, an optional ultrasonic cleaning system can be added, using high‑frequency vibration to effectively break the adhesion between the material and the screen.
4. Multi‑Deck Classification – One Feed, Multiple Fractions
The Gaofu S49 series rotary vibrating sieve supports 1 to 5 screen decks, with mesh accuracy covering 80 to 600 mesh (0.02‑0.18 mm) . A single feed completes multiple steps simultaneously – coarse screening removes large impurities such as fibre, bran and lumps, fine screening achieves precise starch classification, and ultra‑fine powder is discharged from the bottom deck.
One machine can simultaneously produce 2 to 6 grades of starch in a single pass. For manufacturers that need to produce different starch grades, this design greatly reduces equipment investment and process transfer time.
The Gaofu S49 series starch rotary vibrating sieve is suitable for multiple stages of starch processing:
Raw material pre‑cleaning. Corn, potatoes, cassava and other raw materials need to have stones, dirt, twine, lumps and other impurities removed before entering the processing line. The rotary vibrating sieve performs preliminary cleaning at the raw material receiving stage, providing clean raw materials for subsequent processes.
Fibre and protein separation in wet processing. In wet starch processing, the gluten and starch after germ separation need to be separated and washed. The rotary vibrating sieve effectively separates coarse fibre and protein impurities from starch through precise screen mesh configuration.
Finished starch classification and pre‑packing inspection. Safety inspection of finished starch before silo entry, removing lumps generated during transport or drying. The rotary vibrating sieve precisely classifies starch by mesh size, ensuring uniform particle size and high purity, meeting the production requirements of different starch grades.
From the perspective of actual production conditions in starch processing, the Gaofu S49 series rotary vibrating sieve delivers value in four dimensions:
Quality value: Fibre, bran, lumps and foreign matter are effectively intercepted, resulting in uniform particle size and high‑purity starch. The fineness uniformity and purity of the finished starch are reliably assured.
Efficiency value: Multi‑deck screens complete multi‑stage classification with a single feed; the bouncing ball cleaning and mother‑child screen structure effectively reduce screen blinding frequency; the equipment can run 24 hours continuously. The production line no longer needs to stop frequently because of screen blinding.
Hygiene value: Food‑grade stainless steel and the dead‑corner‑free design make the equipment easy to clean with no material residue; the fully enclosed structure effectively controls dust escape. This helps enterprises meet the hygiene requirements of food GMP and HACCP systems.
Cost value: The mother‑child screen structure extends screen service life; the quick‑change screen design shortens downtime; the fully enclosed structure reduces material loss. The combined effect of these three design features keeps long‑term operating costs under control.
About Gaofu
Xinxiang Gaofu Machinery Co., Ltd. was originally founded in the 1980s. After more than 40 years of development, the company has become a "National Specialized and Sophisticated 'Little Giant' Enterprise", a "National Green Factory", a "National High-tech Enterprise", a "National Intellectual Property Advantage Enterprise", and the "President Unit of the Vibration Association". It also hosts the "Henan Provincial Industrial Design Center", the "Henan Provincial Engineering Technology Research Center for Intelligent Online Screening Systems", and the "Xinxiang Municipal Engineering Technology Research Center for Fine Screening". The company has been granted more than 500 invention, utility model and design patents, has received the "Science and Technology Achievement Award" issued by the Ministry of Industry and Information Technology, and has participated in drafting four "National Standards".
Gaofu's product portfolio covers several series and hundreds of varieties, including vibrating screening equipment, conveying equipment, coal crushing equipment, filtration equipment, and automated material handling systems. Its main products include vibrating screens, screening machines, vibrating sifters, rotary vibrating screens, ultrasonic vibrating screens, linear screens, air flow screens, gyratory screens, roller screens, dewatering screens, bar screens, vacuum feeders, dust-free feeding stations, ton bag feeding stations, feeding systems, automatic powder feeding systems, automatic slag discharge filters, leaf filters, clay filters, toothed roll crushers, coal crushers, and other equipment. These are widely used in many industries such as food, pharmaceuticals, chemicals, metallurgy, building materials, mining, thermal power, and environmental protection, earning the trust and praise of over 10,000 customers worldwide.
Gaofu products are not only popular in Greater China but are also exported to more than 100 countries and regions, including Russia, Canada, the United States, New Zealand, Japan, Brazil, South Africa, etc. The company adheres to its mission: "Enhance material quality and efficiency, meet customer needs", walking side by side with customers for harmonious and win-win cooperation. Today, Gaofu has become an approved supplier to many Fortune 500 companies, including CNPC, Sinopec, Sinochem Group, China Resources Group, Sinopharm Group, COFCO Group, China National Building Material Group, China Aerospace, and Jinchuan Group.
Gaofu Machinery – Global No.1 in Vibrating Screen Sales. In May 2024, Frost & Sullivan, an international authoritative advisory firm, based on its research on the global vibrating screen market and calculated according to global vibrating screen sales volume in 2023, issued a market position confirmation certificate to Gaofu Machinery.
