Over 10,000+ customers' choice, Focus on screening industry 40+ years
Fibre entanglement forming physical agglomerates. Mustard seeds contain plant fibres, and during grinding, some fibres are cut into fine strands. These strands easily entangle and interlock during screening, forming fibre agglomerates of various sizes. These agglomerates themselves are oversized particles, and they also wrap around the mesh openings, progressively blocking the screen.
Electrostatic adhesion creating a "powder film" barrier. Mustard powder particles accumulate a large amount of static charge during grinding and conveying. Charged fine powder is strongly attracted to the wire surfaces of the screen by electrostatic forces, forming a dense "powder film". This film thickens over time, continuously reducing the effective screening area and causing screening efficiency to drop rapidly.
Low bulk density causing unstable motion. Mustard powder has a low bulk density, so its particles settle slowly and have low momentum on the screen surface. The single‑direction vibration of ordinary vibrating screens cannot provide sufficient kinetic energy to light powders, causing the material to "float" rather than "jump" on the screen surface, resulting in incomplete separation of fines and impurities.
The Gaofu S49‑AC series ultrasonic vibrating sieve is not simply an ordinary screen with an added device; it establishes an independent "force field" system. The equipment uses a dual screening principle of "macroscopic mechanical vibration + microscopic ultrasonic vibration":
Macroscopic three‑dimensional vibration. The vibration motor at the base generates excitation force, driving the material in a compound three‑dimensional motion on the screen surface. This mechanical force is responsible for the overall flow conveying of the material and rough particle size stratification – large particles move along the screen to the reject port, while fine particles get an initial chance to pass through.
Microscopic ultrasonic vibration. The ultrasonic generator converts mains frequency electrical energy into high‑frequency electrical signals (18KHz‑40KHz), which are then converted by a transducer into high‑frequency mechanical vibration of the same frequency, uniformly transmitted to the screen surface. The screen itself vibrates at tens of thousands of times per second, instantly breaking up agglomerated powder and keeping particles in a suspended state.
Synergistic effect of dual vibration. While the material is being "thrown" macroscopically, the screen itself is also "trembling" microscopically at high frequency. The macroscopic vibration keeps the material moving overall, while the microscopic ultrasonic vibration continuously disrupts the van der Waals forces and electrostatic adhesion between particles. When the two vibrations are superimposed, fibre agglomerates in the mustard powder are effectively broken up, electrostatic adhesion is continuously disrupted, and fine powder passes smoothly through the mesh openings.
Mechanism 1: Ultrasonic De‑agglomeration – Breaking Fibre Aggregates at the Source
Fibre agglomerates in mustard powder are the primary cause of screen blinding. Ordinary vibrating screens cannot effectively break these agglomerates; large lumps either block the mesh openings or are rejected as waste, causing material loss.
The microscopic ultrasonic vibration of the Gaofu ultrasonic vibrating sieve acts directly on the screen surface. The high‑frequency micro‑vibration has a "crushing" and "pushing apart" effect on agglomerates. When fibre agglomerates come into contact with the high‑frequency vibrating screen, the entangled fibres are shaken apart and dispersed, giving individual particles the opportunity to pass through the screen. This mechanism effectively reduces screen blinding and raw material waste caused by fibre agglomeration.
Mechanism 2: Electrostatic Reduction – Preventing Fine Powder from "Sticking" to the Screen
Electrostatic adhesion of mustard powder is the direct cause of "powder film" blinding. Ordinary vibrating screens cannot address this because static charge is an inherent physical property of the powder and cannot be eliminated by conventional mechanical vibration.
The high‑frequency micro‑vibration of the Gaofu ultrasonic vibrating sieve keeps the screen surface in constant microscopic motion, preventing charged fine powder from forming a stable adsorbed layer on the screen. The ultrasonic energy continuously disrupts the electrostatic adhesion between fine powder and the screen, keeping the powder in a suspended state rather than "sticking" to the mesh, effectively inhibiting the formation of the "powder film".
Mechanism 3: Self‑Cleaning Screen – No Frequent Stoppages for Cleaning
When ordinary vibrating screens handle mustard powder, once the screen blinds, the only solution is to stop and clean, severely affecting line efficiency. The high‑frequency vibration of the Gaofu ultrasonic vibrating sieve itself has a self‑cleaning function. The high‑frequency micro‑vibration continuously cleans the screen, forcibly dislodging near‑size particles trapped in the mesh openings, ensuring the apertures remain clear. Measured data shows that after adopting ultrasonic technology, screen permeability can be maintained at a high level, and the blinding rate is significantly reduced.
Mechanism 4: Fully Enclosed Food‑Grade Structure – Two Lines of Defence – Hygiene and Safety
Mustard powder is a direct‑contact seasoning, so the hygiene standards for production equipment are extremely strict. All material‑contact parts of the Gaofu ultrasonic vibrating sieve are made of 304 food‑grade stainless steel, with finely polished surfaces, and 316L stainless steel is also available upon request. The equipment has a fully enclosed sealed structure, effectively preventing dust escape during screening, avoiding cross‑contamination, and improving the workshop environment.
1. Effectively solves screen blinding, ensuring continuous line operation. Fibre agglomeration and electrostatic adhesion are the main causes of screen blinding in mustard powder. The ultrasonic vibrating sieve continuously breaks up agglomerates and disrupts electrostatic adhesion through high‑frequency micro‑vibration, keeping the screen clear. The equipment can run continuously for long periods without frequent stoppages for cleaning, effectively supporting the continuous operation requirements of large‑scale seasoning production lines.
2. Improves screening accuracy and throughput. Compared with traditional vibrating screens, the Gaofu ultrasonic vibrating sieve can improve screening accuracy by over 80% and increase throughput by 2 to 5 times. For seasonings such as mustard powder that require fine classification, improved accuracy directly translates into upgraded product quality.
3. Does not alter material characteristics – preserves original flavour. The ultrasonic vibrating sieve achieves screening through high‑frequency micro‑vibration without changing the original properties of the mustard powder. The pungent flavour and physical characteristics of the mustard powder are fully preserved during screening, with no quality loss from excessive mechanical action.
4. Dual compliance – hygiene and environmental protection. The fully enclosed food‑grade stainless steel structure effectively controls dust dispersion during screening, improving the workshop environment. The food‑grade material ensures the purity of the mustard powder during screening, helping enterprises meet increasingly stringent food safety and environmental regulatory requirements.
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.
