Over 10,000+ customers' choice, Focus on screening industry 40+ years
Mustard powder screening is not straightforward. Its material characteristics give rise to three interrelated practical difficulties during screening:
1. Easy agglomeration. Mustard powder contains fibrous components. During grinding and storage, the powder tends to adhere and form lumps due to fibre entanglement, increasing particle size and directly reducing screening efficiency.
2. Easy screen blinding. Mustard powder has strong adsorption properties and is prone to static electricity. The powder readily adheres to the screen surface during screening, gradually blocking the mesh openings. After ordinary screening equipment runs for several hours, screening efficiency drops noticeably, requiring frequent stoppages for cleaning.
3. Low bulk density. Mustard powder particles settle slowly, and their motion trajectory on the screen surface is unstable, affecting screening accuracy. If the screening equipment cannot provide sufficient dispersion force and stable motion control, fine powder and impurities cannot be effectively separated.
The Gaofu S49 series 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 motion, which is then transmitted to the screen deck. After material enters from the feed port, it moves on the screen surface in a spiral outward trajectory under the action of the three‑dimensional vibration.
This three‑dimensional motion has two direct benefits for mustard powder screening:
First, thorough material dispersion. The three‑dimensional vibration causes the mustard powder to continuously tumble and disperse on the screen surface. Fibres do not concentrate and tangle into lumps, and the light powder also gains sufficient kinetic energy to keep moving, avoiding settling and accumulation caused by low bulk density.
Second, more thorough screening. Every mustard powder particle, along its spiral outward path, has more opportunities to contact the screen, resulting in a higher passage rate and more complete separation of fine powder from impurities.
The S49 series rotary vibrating sieve supports 1 to 5 screen decks. For mustard powder impurity removal, a single deck can be configured for basic impurity removal, or multiple decks can be used for coarse and fine classification – the top deck removes large fibre particles and seed coat fragments, while the bottom deck obtains the target‑size finished mustard powder. Screening accuracy can reach up to 600 mesh (0.02 mm) and filtration precision down to 5 microns.
1. Multi‑Deck Classification – One Feed, Multiple Fractions
Mustard powder impurity removal typically requires a mesh size of 30 to 45 mesh. The Gaofu S49 series rotary vibrating sieve supports multi‑deck configuration, allowing a single feed to complete multiple steps simultaneously. In a two‑deck configuration, for example: the top deck intercepts large fibre particles, seed coat fragments and foreign impurities, while the bottom deck performs a secondary fine screening of the passed material to obtain uniformly sized finished product. One machine replaces multiple single‑deck screens in series, reducing equipment investment and process transfer time.
2. Efficient Screen Cleaning – Solving the Blinding Problem
To address the core problems of static electricity and screen adhesion in mustard powder, the Gaofu rotary vibrating sieve for mustard powder can be equipped with a bouncing ball cleaning system or an ultrasonic system. During screening, the bouncing balls continuously tap the screen, dislodging adhering mustard powder. For more severe electrostatic adhesion, the ultrasonic system uses high‑frequency vibration to effectively break the adhesion between the material and the screen, keeping the mesh clear.
Multiple cleaning solutions can be flexibly selected according to the fineness of the mustard powder and process requirements, ensuring that the equipment maintains a high throughput rate and high screening accuracy during continuous production.
3. 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 rotary vibrating sieve for mustard powder 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. The simple design has no hygiene dead corners and supports rapid disassembly for cleaning, meeting food‑grade production hygiene requirements.
4. Continuous Automatic Discharge – Supporting Large‑Scale Production
After traditional screening equipment runs for a period, residue accumulates on the screen surface and requires stoppage for cleaning. With the Gaofu rotary vibrating sieve for mustard powder, impurities and oversize material automatically move along the screen surface to the reject port and are discharged. The equipment can run 24 hours continuously without frequent stoppages for cleaning, effectively supporting the continuous operation requirements of large‑scale seasoning production lines.
5. Quick Screen Change – Reducing Downtime
Different mustard powder products may require different particle sizes. The Gaofu S49 series rotary vibrating sieve uses a separate mother‑child screen frame structure, allowing screen changes in just 3 to 5 minutes. The mother screen provides structural support, while the fine screen (working screen) is responsible for 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. This design reduces consumable screen costs while shortening production line downtime.
From the perspective of actual production conditions, the Gaofu rotary vibrating sieve delivers value to seasoning manufacturers in four dimensions:
1. High impurity removal accuracy – safeguarding product purity. Mustard powder raw materials may contain seed coat fragments, fibre lumps, packaging threads and other foreign matter. Through precise screen mesh configuration and stable three‑dimensional vibration, the rotary vibrating sieve effectively intercepts all impurities larger than the mesh openings. A conventional 30‑45 mesh configuration meets the core impurity removal requirements for mustard powder, ensuring that the mustard powder entering the downstream packaging process is pure and free of contaminants.
2. Stable classification accuracy – ensuring batch‑to‑batch product consistency. The seasoning industry requires stable product particle size, with no significant variation between batches. Through stable vibration parameters and precise screen configuration, the rotary vibrating sieve maintains screening accuracy at a high level. Coarse particles, acceptable product and fines are each directed to their proper outlets, with minimal batch‑to‑batch variation.
3. Significant anti‑blinding performance – supporting continuous line operation. The electrostatic and adhesive nature of mustard powder makes screen blinding a major constraint on line efficiency. The bouncing ball or ultrasonic cleaning system keeps the screen clear, allowing the equipment to run continuously for long periods. For production lines with a throughput of 500 to 700 kg/hour, this means no loss of capacity and no interruption of efficiency.
4. Dual compliance – hygiene and environmental protection. Seasoning manufacturers face increasingly stringent requirements for workshop cleanliness. The fully enclosed structure of the rotary vibrating sieve effectively controls dust dispersion during screening, improving the workshop environment. Food‑grade stainless steel ensures the purity of the mustard powder during screening.
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.
