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Food‑Grade Spice Double Motor Direct Discharge Vibrating Screen: Direct‑Connected Screening Equipment for Spice Processing Lines

Food‑Grade Spice Double Motor Direct Discharge Vibrating Screen: Direct‑Connected Screening Equipment for Spice Processing Lines



  • Straight‑Through Structure – Designed for Production Line Operation

Conventional screening equipment typically has side‑mounted discharge outlets – material must travel a long path across the screen surface before discharge. In high‑volume production, this design can cause material accumulation – discharge speed cannot keep up with feed rate, screen surface load increases, eventually leading to blinding and stoppage. At the same time, side discharge means the equipment cannot directly connect to downstream processes – material requires additional conveying equipment or manual handling to reach the next stage.


Gaofu's double motor direct discharge vibrating screen takes a completely different approach – the inlet and outlet are aligned in the same vertical direction, with undersize material discharged through a straight‑through structure. Material enters from the top feed port, and on‑spec material falls vertically into the lower hopper or next process, while impurities are automatically discharged from the side reject outlet.


The production line value of "straight‑in, straight‑out" design:


Seamless line integration – achieving integrated "screening + conveying." The large‑volume discharge outlet at the bottom facilitates equipment installation for production line operation. The equipment can be directly connected into the production line – upstream equipment (such as grinders, conveyors) feeds material into the direct discharge screen, and screened finished product falls directly into downstream equipment (such as packaging machines, mixers) – without manual handling or additional conveying equipment. Material flows from feed to discharge in a fully enclosed system – reducing material exposure and cross‑contamination risks.


Fast discharge speed – matching production line rhythm. Material residence time on the screen surface is minimised – on‑spec material is discharged directly from the bottom after passing through the screen, without detouring to side outlets. For the same specification, the direct discharge screen achieves throughput of 10‑15 tonnes/hour – 40%‑60% higher than conventional vibrating screens, with output 2‑5 times that of ordinary circular screens – ensuring the production line does not "stall" at the screening stage.


Reduced blinding – ensuring continuous line operation. Material passes through quickly without滞留 or accumulation on the screen surface – structurally lowering the probability of blinding. The equipment supports 24‑hour continuous operation without frequent stoppages for cleaning.


Compact size, low profile – easy line integration. The direct discharge screen has a flat, compact design with a small footprint – easy to move and flexible to install. In space‑constrained workshops, it can be flexibly embedded into existing production lines without major modifications.


  • Dual‑Motor Drive – Providing Ample Screening Power for High‑Flow Production Lines

Direct discharge screens are available in single‑motor and dual‑motor types. A single‑motor unit primarily generates vertical vibration on the material and does not have automatic discharge capability. A dual‑motor unit generates a vortex motion on the screen surface with automatic discharge capability – ideal for impurity removal and screening in powder production lines.


Gaofu's double motor spice direct discharge vibrating screen features two vibration motors of the same model symmetrically mounted on both sides of the screen machine, with eccentric weights installed at the top and bottom of the motor shafts. The two motors work in coordination, generating overlapping forces in horizontal, vertical, inclined, and centrifugal directions – providing stronger excitation force than a single motor, with more thorough three‑dimensional rotational motion on the screen surface. By changing the phase angle and weight of the upper and lower eccentric blocks, the excitation force and material movement trajectory can be flexibly adjusted.


The unique advantages of dual‑motor design in production line operation:


Throughput increased by over 50%. The dual‑motor design delivers greater excitation force, suitable for high‑flow conditions. For production line operation, this means a single machine matches the capacity rhythm of the entire production line – the screening stage does not drag down the entire line due to insufficient capacity.


Thoroughly disperses lumpy materials. Spice powders tend to absorb moisture and form lumps during storage. The three‑dimensional rotational motion generated by the dual‑motor design thoroughly disperses material – lumps are effectively broken for rapid passage. It delivers excellent screening performance for lumpy and sticky materials – ensuring the production line does not jam due to lumpy materials.


Automatic discharge for continuous operation. The dual‑motor design generates vortex motion on the screen surface with automatic discharge capability. Impurities and foreign matter are separated and automatically moved to the reject outlet –合格 material flows continuously from the bottom straight‑through outlet – without manual intervention, fully compatible with continuous production line operation.


  • Food‑Grade Stainless Steel Construction – Guardian of Production Line Hygiene and Safety

Spices are widely used in food processing and home cooking, placing strict hygiene demands on production equipment. All material‑contact parts of Gaofu's double motor spice direct discharge vibrating screen are made of 304 stainless steel , complying with food hygiene standards.


The production line value of stainless steel construction:


Safe and contamination‑free. 304 stainless steel complies with food contact metal material standards – ensuring a pure, contamination‑free screening process with no heavy metal contamination. For production line operation, this means every batch of product quality is guaranteed – no food safety risks caused by equipment materials.


Easy to clean – no dead corners. The equipment is easy to clean internally and externally with no dead corners – meeting food and pharmaceutical industry standards. It is easy to disassemble for rapid cleaning and sanitisation – meeting food‑grade GMP requirements. For production lines requiring frequent changeovers between different spice varieties, rapid cleaning capability means shorter changeover time.


Corrosion‑resistant and durable. Stainless steel is corrosion‑resistant, high‑temperature‑resistant, and rust‑proof – capable of withstanding long‑term contact with salt and acidic components in spices – with a long service life, ensuring long‑term stable production line operation.


  • Fully Enclosed Structure – Ensuring Clean Production on Production Lines

Spice powders are fine and lightweight – during screening, they readily generate dust. Gaofu's double motor spice direct discharge vibrating screen features a fully enclosed structure with dust‑proof seals – no dust emission during operation.


The production line value of sealed dust‑proof design:


Reduced material loss. No dust emission means no material spillage – every gram of spice powder is effectively collected. For production line operation, this means higher raw material utilisation and lower operating costs.


Improved workshop environment. Dust concentration in workshop air is reduced – walls and equipment surfaces no longer accumulate powder frequently, cleaning cycles are significantly extended, and operator working conditions are improved. For companies needing to pass food safety audits, a clean workshop environment means higher audit pass rates.


Controllable operating noise. Equipment operating noise is kept around 70 decibels – complying with factory occupational health management requirements.


  • Quick Screen Change – Product Changeovers Without Production Line Stoppage

Seasoning producers typically handle multiple product varieties – Sichuan pepper powder, cumin powder, chilli powder, five‑spice powder, and more – and screen change efficiency directly affects production line rhythm. Gaofu's double motor spice direct discharge vibrating screen features a quick‑release screen structure – screen changes are simple and quick, taking only 3‑5 minutes. For production lines requiring frequent changeovers between different spice varieties, this capability significantly reduces changeover downtime and improves equipment utilisation.


  • Typical Application Scenarios

Gaofu's food‑grade spice double motor direct discharge vibrating screen is used in the following typical spice processing line applications:


Online impurity removal and screening of powdered spices: Breaking lumps and separating impurities from Sichuan pepper powder, cumin powder, chilli powder, five‑spice powder, and other powdered seasonings before packaging or mixing


Online impurity removal of whole spices: Rapid removal of stones, twine, and other foreign matter from Sichuan pepper, cumin, pepper, chilli, and other whole spices before grinding


Direct‑connected supporting equipment for seasoning production lines: Directly integrated into production lines – seamlessly connecting upstream grinding equipment and downstream packaging equipment – achieving integrated "screening + conveying" operation


Integration with packaging machines: Material is screened and then directly fed into packaging machines – achieving integrated "screening + packaging" operation


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.

                                                                                         About Gaofu

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