Over 10,000+ customers' choice, Focus on screening industry 40+ years
The Gaofu S49 series food powder 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. 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 to suit different food powder screening requirements.
This three‑dimensional motion offers three core advantages for food powder screening:
First, thorough material loosening and natural breaking of lumps. Food powders such as milk powder and starch continuously tumble and shift under three‑dimensional vibration, and moisture‑induced or electrostatic lumps are quickly loosened and de‑agglomerated during the motion. The material spreads evenly in a spiral pattern on the screen surface, achieving layered separation.
Second, extended screening path and high accuracy. The material travels along a spiral trajectory on the screen surface, giving every 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. Whether it is the ultra‑fine classification of milk powder or the fine screening of starch, the requirements can be met.
Third, adjustable motion trajectory for different materials. By adjusting the phase angle of the eccentric weights, the motion trajectory and screening time of the material on the screen surface can be flexibly adjusted to suit different moisture levels, fineness and types of food powders.
Advantage 1: Food‑Grade Stainless Steel for Hygiene Safety
Food powders are used directly in food processing, so the equipment material that contacts them must meet strict hygiene requirements. All material‑contact parts of the Gaofu food powder 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, and food‑grade silicone seals are used. The equipment has a simple structure, no hygiene dead corners, and supports rapid disassembly for cleaning, fully complying with food production licensing and GMP cleanliness requirements.
Advantage 2: Fully Enclosed Sealed Structure – Dust, Moisture and Contamination Protection
During food powder screening, dust escape causes both material loss and workshop contamination. The Gaofu food powder rotary vibrating sieve has a fully enclosed sealed structure, with screening taking place inside a sealed chamber – no powder escape, no material leakage. 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 food powder during screening; and it prevents foreign matter from entering the screening system, ensuring product purity.
Advantage 3: Multiple Anti‑Blinding Mechanisms – Tackling Caking and Electrostatic Blinding
To address the core problems of caking, electrostatic adhesion and screen blinding in food powders, the Gaofu food powder 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 material and keeping the mesh clear. For milk powder, which is hygroscopic, prone to caking and easy to blind screens, this cleaning system ensures that the screen remains clear for long periods, effectively separating lumps and impurities from the raw material.
Ultrasonic cleaning system (optional). For ultra‑fine powders 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. It is particularly suitable for fine powders below 200 mesh or easily agglomerated materials such as milk powder and starch, achieving a screening accuracy of over 95%.
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.
Advantage 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 and lumps, fine screening achieves precise powder classification, and ultra‑fine powder is discharged from the bottom deck.
One machine can simultaneously produce 2 to 6 grades of classified or filtered products. For manufacturers that need to produce different grades of food powders, this design greatly reduces equipment investment and process transfer time.
Advantage 5: Automatic Discharge of Impurities for Continuous Operation
During screening, impurities and oversize material automatically move along the screen surface to the reject port and are discharged without manual intervention, enabling 24‑hour continuous operation. The mesh openings do not block, and powder does not escape. The equipment has a normal service life of 15 to 20 years.
Advantage 6: High Efficiency, Robust and User‑Friendly Design
The Gaofu S49 series rotary vibrating sieve is efficient, robust and user‑friendly, with simple operation and easy cleaning. The compact size saves space and is easy to move. Classification efficiency can reach 95% to 99% . Screening accuracy can reach 99.56% .
The Gaofu S49 series food powder rotary vibrating sieve is suitable for screening the following food powders:
Milk powder screening. Infant formula, adult nutritional powder and other milk powders need to have lumps and fine foreign matter removed to ensure uniform particles and better solubility. To address the hygroscopic, caking and blinding characteristics of milk powder, the equipment is equipped with efficient cleaning devices to keep the screen clear for extended periods. Conventional screening capacity ranges from 1 to 8 tonnes per hour.
Starch screening. Corn starch, potato starch, tapioca starch and other starches – impurity removal, classification and filtration. Removes fibre, protein impurities, metal fragments, lumps and other foreign matter from starch, improving purity and food safety. Integrates impurity removal, classification and purification in one machine.
Protein powder screening. Soy protein powder, whey protein powder and others – removal of lumps, agglomerates and foreign matter. Screening fineness can reach 600 mesh or 0.02 mm.
Sugar powder, rice flour and other food powder screening. Baking ingredients such as flour, sugar powder and starch may contain fine impurities or have formed lumps due to moisture during processing. The equipment effectively separates foreign matter and removes lumps, ensuring the raw materials are fine and uniform.
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.
