Over 10,000+ customers' choice, Focus on screening industry 40+ years
Spice powder screening differs significantly from screening ordinary powdered materials. This "difficulty" stems from the inherent material characteristics of spices:
High fines content – blinding is "the norm." Sichuan pepper powder, cumin powder, chilli powder, and other spices generate large quantities of fines during grinding. These fines tend to block the screen mesh during screening, causing screening efficiency to decline steadily. Conventional equipment often requires stoppages for cleaning after short operating periods – frequent start‑stop cycles not only reduce throughput but also cause fluctuating screening accuracy and batch‑to‑batch quality variation.
High grading accuracy requirements – fineness control is "essential." Different spice types and applications have different particle size requirements – Sichuan pepper powder and cumin powder used for surface dusting require higher fineness, while spices used for simmering have specific particle size ranges. If screening equipment lacks grading accuracy, off‑spec particles may contaminate the finished product, affecting dissolution rate and flavour release.
Long continuous operation – equipment stability is the "baseline." Modern seasoning production lines typically operate continuously – if equipment stops due to blinding, failure, or accuracy drift, the rhythm of the entire line is disrupted. Screening equipment must maintain stable grading accuracy during long‑duration continuous operation, without accuracy degradation over extended running time.
The operational stability of Gaofu's S49 series spice rotary vibrating sieve is not a collection of isolated technical features – it is a systematic engineering achievement encompassing vibration principles, structural strength, anti‑blinding design, and material selection.
Stable three‑dimensional rotary vibration – accuracy does not degrade over time.
Gaofu's spice 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. Material moves on the screen surface in a spiral outward trajectory – ensuring both high screening accuracy and considerable throughput.
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 spice materials such as Sichuan pepper powder, cumin powder, chilli powder, and five‑spice powder. This adjustability enables the equipment to maintain stable screening accuracy across different materials and operating conditions.
Reinforced frame design – capable of long‑duration continuous operation.
Modern seasoning production lines demand high equipment stability. Gaofu's spice rotary vibrating sieve features a reinforced frame design with strong load capacity, supporting long‑duration continuous operation and effectively reducing maintenance downtime. Optimised vibration damping results in low noise – ≤75 dB – and reasonable energy consumption, helping reduce long‑term operating costs.
Normal service life reaches 15‑20 years. For seasoning producers, this means a single investment with long‑term benefits – without frequent equipment replacement and associated production stoppages and re‑commissioning.
Anti‑blinding design – preventing "blinding" from becoming a production bottleneck.
Spices contain a high proportion of fines, which tend to block the screen mesh during screening. Gaofu's spice rotary vibrating sieve incorporates several targeted optimisations to address this industry pain point:
Bouncing ball cleaning system: Bouncing balls installed below the screen continuously strike the screen surface through vibration, enabling smooth material passage and effectively solving blinding.
Ultrasonic cleaning system (optional): For ultra‑fine powders or electrostatic materials, an ultrasonic cleaning system can be optionally added – high‑frequency vibration keeps fine powder in a "suspended" state on the screen surface, effectively inhibiting adhesion and blinding.
Anti‑blinding structural design: The screen tensioning structure ensures a flat screen surface, minimising material accumulation dead zones and reducing blinding from the design perspective.
Impurities and oversize material are automatically discharged, supporting continuous operation. Operators do not need to stop frequently to clean the screen surface – the equipment can run stably for extended periods, and screening accuracy does not degrade over time.
Refined spice classification requires screening equipment with wide‑range screening accuracy adjustability and multi‑deck simultaneous grading capability.
Screening accuracy reaches up to 600 mesh (0.02 mm) and filtration precision down to 5 microns. For typical spice screening requirements (usually 20‑120 mesh), this accuracy capability provides ample margin, ensuring consistent finished product fineness. Whether for fine grading of Sichuan pepper powder or impurity removal screening of cumin powder, suitable screen configurations are available.
Supports flexible configurations of 1 to 5 screen decks – one feed completes multi‑stage grading. A single machine can simultaneously complete 2 to 6 grades of separation or filtration. For spice processing, the upper deck intercepts lumps and coarse particles, the middle decks achieve fine grading, and the lower deck acts as a safety screen to ensure finished product purity – one feed completes multiple steps – without the need for multiple machines in series, reducing material transfers between equipment and cross‑contamination risks.
Screening accuracy reaches over 95%. Screened spice powders are uniform in size with concentrated particle size distribution, effectively eliminating size mixing and cross‑contamination.
Quick screen changes – product changeovers without prolonged downtime. Seasoning producers typically handle multiple product varieties – Sichuan pepper powder, cumin powder, chilli powder, five‑spice powder, and more. Gaofu's spice rotary vibrating sieve features a unique separate mother‑screen / fine‑screen design – the mother screen fully supports the working fine screen, effectively extending fine screen service life. Screen changes take only 3‑5 minutes – significantly reducing changeover downtime and improving equipment utilisation.
Dust emission during spice screening not only causes raw material waste but also pollutes the workshop environment and endangers operator health. Gaofu's spice rotary vibrating sieve features a fully enclosed structure – from the feed inlet to each discharge outlet, all connections are sealed, completely eliminating dust leakage during production.
The stability value of the fully enclosed structure:
No dust emission – stable and controllable workshop environment. The equipment features a fully enclosed design that effectively prevents dust emission during screening, avoids material cross‑contamination, and improves the workshop environment. Operating noise is kept below 75 decibels.
Preventing cross‑contamination – stable batch‑to‑batch quality. The fully enclosed structure effectively prevents dust emission during screening, avoiding cross‑contamination between different spice varieties. For production lines requiring frequent changeovers between different products, this design is particularly important – residual material from previous batches does not affect subsequent batch quality.
Compliant with food hygiene standards – audit‑ready. The simple structure has no dead corners, supports quick disassembly and cleaning, meets food‑grade production hygiene requirements, and reduces cross‑contamination between batches. For seasoning producers needing to pass food safety audits, this means the equipment itself will not be a "deduction point" during inspections.
Spices are widely used in food processing and home cooking, placing extremely high demands on production equipment hygiene standards. Gaofu's spice rotary vibrating sieve uses 304 stainless steel as standard for all material‑contact parts (316L available on request), with finely polished surfaces meeting sanitary requirements.
The stability value of 304 stainless steel construction:
Safe and contamination‑free. 304 stainless steel complies with food contact metal material standards – ensuring a pure, contamination‑free screening process that fully complies with food production licensing and GMP clean production requirements.
Corrosion‑resistant and easy to clean. Stainless steel is corrosion‑resistant, high‑temperature‑resistant, rust‑proof, and easy to clean and sanitise. Smooth surfaces resist material adhesion – cleaning is simple and efficient.
No dead corners. The weld‑free, dead‑corner‑free design prevents material residue and bacterial growth – easily meeting the strict GMP hygiene management requirements of the food industry.
The operational stability of Gaofu's spice rotary vibrating sieve translates into quantifiable value in actual spice processing:
Consistently stable screening accuracy. The combination of reinforced frame design, stable three‑dimensional rotary vibration, and effective anti‑blinding structure ensures that screening accuracy does not degrade during long‑duration continuous operation. Batch‑to‑batch product quality consistency is guaranteed – no more "passing this batch, failing the next" due to equipment condition fluctuations.
Significantly reduced downtime. Anti‑blinding design reduces stoppages caused by blinding; quick screen change design (3‑5 minutes) shortens changeover downtime. Equipment utilisation is significantly improved, and the entire production line operates for longer effective running time.
Controllable maintenance costs. Normal service life reaches 15‑20 years. The reinforced frame design reduces the risk of structural fatigue and deformation; the mother‑screen / fine‑screen design extends screen service life. Long‑term maintenance and consumable costs remain at reasonable levels.
Food Industry Client Testimonials
Nestlé, CP Group, Haitian Flavour & Fragrance, Yihai Kerry, Yili, Mengniu,Shuanghui, Wahaha, Master Kong, Want Want, Anjoy Foods, Angel Yeast,Yangyuan Foods, Uni-President Enterprises, Qiaqia Food, Luhua Group,Alpenliebe, Golden Monkey, Orion, Xizhilang,Sanquan Foods, Synear Food, Oishi, Wong Lo Kat, Yanjing Beer, Seamild,Jinpai, Chubang, Hengshun Vinegar Industry, Longda Group, Beijing Daoxiangcun, Anhe Dairy,Weiwei Group, Xiangpiaopiao, Maiquer, Tianbing, Binqi Food, Ligao Okun
Fortune 500 Client Testimonials
CNPC、CSCEC、Sinochem Holdings、CRCC、China Minmetals Corporation、CNOOC、CR、Sinopharm、CHN Energy、COFCO Corporation、Huawei Technologies、PowerChina、CITIC Group、Wuchan Zhongda Group、NORINCO、Chalco、CNBM、 Shaanxi Coal and Chemical Industry Group、Ansteel Group、CETC、CSSC、CASC、CEC、Jinchuan Group、CASIC、Conch Cement、CNNC、SPH、Shanxi Coking Coal Group、 Zhongtai Chemical、GPHL、DEC、Sinosteel Corporation、MCC、China National Salt Industry Chemical、China Baowu Steel Group、China Animal Husbandry Industry Co., Ltd.、CECEP
About Gaofu
Xinxiang Gaofu Machinery Co., Ltd. was founded back in the 1980s. With over 40 years of development, it has been certified as a National-level Specialized, Refined, Unique & Innovative Little Giant Enterprise, National Green Factory, National High-tech Enterprise, and National Intellectual Property Advantage Enterprise, and serves as the President Unit of China Vibration Screening Industry Association.
The company is accredited with the Henan Provincial Industrial Design Center, Henan Provincial Engineering Technology Research Center for Intelligent On-line Screening System, and Xinxiang Municipal Engineering Technology Research Center for Fine Screening.
Gaofu has obtained more than 500 patents including invention patents, utility model patents and design patents, been awarded the Science and Technology Achievement Prize issued by the Ministry of Industry and Information Technology of China, and participated in drafting and formulating 4 national standards.
Gaofu's product portfolio covers multiple series and hundreds of specifications, including vibrating screening equipment, conveying equipment, coal crushing equipment, filtration equipment and automatic material handling systems.
Core products include vibrating screens, screening machines, vibratory sifters, rotary vibrating screens, ultrasonic vibrating screens, linear vibrating screens, airflow screens, gyratory screens, roller screens, dewatering screens, bar screens, vacuum feeding machines, dust-free feeding stations, bulk bag feeding stations, feeding systems, automatic powder feeding systems, automatic slag-discharging filters, leaf filters, clay filters, toothed roll crushers, coal crushers and other machinery.
These products are widely applied in food, pharmaceutical, chemical, metallurgy, construction materials, mining, thermal power, environmental protection and many other industries, winning recognition and trust from over 10,000 clients worldwide.
Gaofu products enjoy strong sales across Greater China, and are exported to more than 100 countries and regions such as Russia, Canada, the United States, New Zealand, Japan, Brazil and South Africa.
Upholding the corporate mission of Improving material quality & efficiency to fully satisfy customer demands, Gaofu maintains long-term partnerships with clients to achieve win-win development.
At present, Gaofu is an official qualified supplier for numerous Fortune Global 500 enterprises, including CNPC, Sinopec, Sinochem Holdings, China Resources Group, Sinopharm Group, COFCO, China National Building Material, China Aerospace Science and Technology Corporation, Jinchuan Group and more.
Gaofu Machinery ranks No.1 in global sales volume of vibrating screens.
In May 2024, Frost & Sullivan, a world-renowned international consulting firm, issued a Market Position Verification Certificate confirming that Gaofu achieved the world's largest shipment volume of vibrating screens in the global market in 2023.
