Over 10,000+ customers' choice, Focus on screening industry 40+ years
Solid beverage production involves a wide range of powdered raw materials, and the causes of screen blinding vary depending on the material:
Electrostatic adhesion blinding. Milk powder, protein powder, and similar fine materials generate static electricity due to particle friction during screening. Charged fine particles adhere to the screen surface and around mesh openings, gradually forming a "powder film" that blocks the holes. This type of blinding is especially prominent in dry environments.
Fat‑related adhesive blinding. Non‑dairy creamer, whole milk powder, and other fat‑containing materials have a sticky nature. During screening, fine particles readily adhere to the screen surface, and ordinary vibration cannot effectively remove them. Blinding worsens as screening time increases.
Hygroscopic lump blinding. Some solid beverage powders (such as sugar substitutes and fruit/vegetable powders) are highly hygroscopic and tend to absorb moisture from the air during storage or conveying, forming lumps. These lumps can become wedged in mesh openings and are difficult to remove by conventional vibration.
Fine powder agglomeration blinding. Ultra‑fine powders tend to agglomerate due to van der Waals forces and other interactions during screening, forming agglomerates much larger than individual particles. These agglomerates can easily become stuck in the mesh, causing blockages.
Gaofu's S49 series rotary vibrating sieve (three‑dimensional rotary vibrating sieve) uses a vertical vibration motor as the excitation source. Eccentric weights installed at the top and bottom of the motor convert rotary motion into a three‑dimensional compound motion (horizontal, vertical, and inclined), which is transmitted to the screen surface. By adjusting the phase angle of the upper and lower eccentric weights, the material’s movement trajectory and residence time on the screen can be flexibly changed to suit different solid beverage powders.
In terms of anti‑blinding design, Gaofu's rotary vibrating sieve offers a systematic solution across several dimensions:
1. Three‑dimensional vibration trajectory reduces static material accumulation
Traditional two‑dimensional vibrating screens move material only in the horizontal plane, allowing fines to accumulate statically on the screen surface. Gaofu's three‑dimensional compound motion causes material to spread outward on the screen surface in a spiral path, with constant tumbling and bouncing – this reduces the static residence time of fines on the screen surface, inherently lowering the probability of blinding.
2. Bouncing‑ball cleaning system continuously knocks the screen to prevent blinding
Below the screen, Gaofu’s rotary vibrating sieve is equipped with a bouncing‑ball cleaning system. During operation, bouncing balls continuously bounce between the screen and the support grid, striking the screen to dislodge adhered fines and wedged particles. This "screen‑while‑cleaning" design keeps the screen open throughout the screening process, eliminating the need for frequent manual stoppages.
3. Ultrasonic cleaning system tackles ultra‑fine powder blinding
For screening ultra‑fine powders above 100 mesh, traditional bouncing‑ball cleaning has limited effectiveness. Gaofu's rotary vibrating sieve can be equipped with an ultrasonic cleaning system that superimposes high‑frequency ultrasonic vibrations on the screen. This system converts electrical energy into high‑frequency mechanical vibration, subjecting ultra‑fine powders to ultrasonic acceleration that inhibits adhesion, friction, settling, and wedging – the main causes of blinding. The material on the screen undergoes low‑frequency rotary vibration combined with ultrasonic vibration, keeping fine particles in a "suspended" state on the screen surface, preventing adhesion. The ultrasonic system is self‑cleaning and requires no additional cleaning devices.
4. Automatic impurity discharge supports continuous operation
During screening, impurities, lumps, and oversize material are automatically discharged without manual intervention. This allows the equipment to run continuously for extended periods, reducing capacity losses from stoppages. This is particularly suitable for continuous production modes in solid beverage manufacturing.
5. Fully enclosed structure controls dust and moisture
The equipment features a fully enclosed design that prevents dust from escaping during operation. For hygroscopic solid beverage powders, the enclosed structure also effectively isolates external moisture, reducing the risk of moisture‑induced lumping during screening.
With over 40 years of experience in screening equipment, Gaofu Machinery has developed the S49 series three‑dimensional rotary vibrating sieve as high‑precision equipment for fine screening of powders and granular materials. For solid beverage powder screening and impurity removal, this series offers the following technical features:
High screening accuracy. Achieves up to 600 mesh (0.02 mm) and filtration precision down to 5 microns. For typical solid beverage de‑dusting and grading needs, this accuracy capability provides ample margin.
Multi‑deck grading completes multiple steps in one pass. Supports flexible configurations of 1 to 5 screen decks, enabling simultaneous impurity removal and multi‑stage grading in a single feed. The upper deck intercepts lumps and foreign matter, while the lower decks achieve fine grading, maximising material utilisation.
Separate mother‑screen / fine‑screen design extends screen life. Gaofu's unique mother‑screen and fine‑screen separation design means the mother screen fully supports the working fine screen, effectively distributing impact forces and extending service life. Screen changes take only 3‑5 minutes.
Food‑grade stainless steel construction. All contact parts are made of 304 stainless steel (316L available on request), with finely polished surfaces and no dead corners, meeting food industry hygiene standards for milk powder, creamer, protein powder, and other solid beverage ingredients.
Multiple models for different capacities. Effective screening diameters range from Φ450 mm to Φ1920 mm, covering various production scales.
Normal service life of 15‑20 years.
When choosing an anti‑blinding rotary vibrating sieve for solid beverage production, consider the following aspects:
| Evaluation Dimension | Key Points to Consider |
| Material characteristics | Fineness, fat content, hygroscopicity, static tendency – assess whether ultrasonic cleaning is needed |
| Capacity matching | Choose the appropriate model based on your line’s hourly processing volume |
| Screening accuracy | Select mesh size based on the target fineness of your solid beverage product |
| Cleaning method | Bouncing‑ball for conventional materials; ultrasonic recommended for ultra‑fine, electrostatic, or sticky powders |
| Material construction | Carbon steel, 304 or 316 stainless steel are optional to meet your diverse requirements. |
| Grading requirements | Determine if multi‑stage grading is needed; choose number of decks (1‑5) accordingly |
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.
