Over 10,000+ customers' choice, Focus on screening industry 40+ years
To understand the design logic of the dust‑free feeding station, we must first understand why flour dust disperses so readily during feeding.
Flour particles are typically 80 mesh or finer – some specialty flours require 200 mesh or above. Particles are fine and lightweight, and the moment a bag is opened and tipped, air disturbance carries a large quantity of fine particles into suspension. In traditional open feeding, operators cut open flour bags and pour the contents into the feed hopper in an open environment, allowing dust to rapidly disperse throughout the workshop.
More critically, flour dust is not just a "dirt" issue. Flour dust is a combustible dust – accumulation to a certain concentration in the workshop poses a safety hazard. At the same time, flour dust is a potential carrier of microorganisms and pests. Dust adhering to equipment surfaces and settling in pipe crevices can become a breeding ground for microorganisms, increasing food safety risks.
The design logic of Gaofu's flour dust‑free feeding station can be summarised in three keywords: enclosed, negative pressure, and filtration. These correspond to the three critical stages of dust control – preventing dispersion, actively collecting, and thoroughly separating.
Fully Enclosed Operating Cabinet – Physical Dust Isolation
Gaofu's dust‑free feeding station features a fully enclosed structure. Operators complete bag opening and tipping inside an enclosed operating cabinet, with the external area physically isolated from the feeding process. This design structurally blocks the path of dust dispersion into the workshop – dust has no escape route and must be processed within the enclosed space.
The equipment's sealing is not limited to the cabinet structure – every material transfer interface, including the feed opening, screening module, and discharge outlet, uses sealed connections to ensure that material remains in an enclosed environment from entry to exit.
Negative‑Pressure Dust Collection System – Active Dust Capture
Simply "containing" dust is not enough – if dust accumulates in the enclosed space, it will still disperse when the cabinet is opened. Gaofu's dust‑free feeding station is equipped with a negative‑pressure dust collection system that maintains negative pressure during operation. Dust generated when operators open and tip bags is directionally drawn into the filtration system rather than accumulating inside the cabinet.
The key to this design is "active" rather than "passive." Relying solely on an enclosed structure is passive defence – dust is contained inside but may escape when opened. Negative‑pressure collection is active capture – as soon as dust is generated, it is drawn away and processed, giving it no chance to disperse. Gaofu's dust‑free feeding station achieves 99.9% dust collection efficiency, maintaining dust concentration at ≤0.1 mg/m³ during operation.
Pulse‑Jet Filtration System – Air‑Dust Separation
Dust‑laden air enters the filtration system, where high‑efficiency filter elements capture dust particles. Clean air is exhausted, while dust accumulates on the filter surfaces. The equipment is equipped with a pulse‑jet dust collector that automatically cleans the filter elements at regular intervals.
This design achieves two objectives: first, purifying exhaust air – the discharged air contains extremely low dust levels, causing no secondary contamination to the workshop environment; second, recovering material – captured dust is 100% returned to the hopper, with no material loss during feeding and material loss ≤0.5%.
Hygienic‑Grade Standards – Easy to Clean, No Dead Corners
Flour processing demands strict equipment hygiene. Gaofu's dust‑free feeding station is designed to hygienic standards – easy to clean, residue‑free. The equipment body is made of food‑grade stainless steel with smooth surfaces that resist material adhesion, and has no dead corners. For production scenarios requiring frequent product changeovers, this design effectively prevents material residue and cross‑contamination.
Integrated Screening Module – Feeding and Impurity Removal in One Step
Gaofu's dust‑free feeding station integrates a vibrating screening module (safety screen). As material is fed, it passes through the screen to intercept lumps and foreign matter – lumps are effectively broken, and foreign matter is reliably intercepted, ensuring that material entering the next process is pure and fine.
This "feeding‑and‑screening‑in‑one" design merges two steps that previously required separate equipment, reducing floor space and eliminating dust dispersion risks during material transfer between the two machines.
| Model | Screening Area | Power（kW） | Speed（r·p·m） | Dynamic load | Static load | Vibrating force（kN） | Flow | Wind pressure |
| GF-800 | 0.42 | 2×0.18 | 1460 | 800N | 1500N | 2.5×2 | 1550-997 | 1217-1641 |
| GF-1000 | 0.64 | 2×0.25 | 1460 | 500N | 2500N | 5×2 | 1550-997 | 1217-1641 |
Gaofu's flour dust‑free feeding station is suitable for the following production scenarios:
Flour processing and food production. Suitable for feeding powdered materials such as flour, starch, sugar powder, milk powder, and protein powder. Whether in flour mills, bakeries, pastry production lines, or frozen food and seasoning producers, the equipment delivers tangible benefits.
Small‑bag material feeding. Particularly suitable for manual bag opening and feeding of small‑bag materials (e.g., 25kg bagged flour). Operators place flour bags on the feeding platform and complete bag opening and feeding in an enclosed negative‑pressure environment, with dust efficiently collected.
Multi‑product changeover production. The equipment's easy‑to‑clean, residue‑free design makes it particularly suitable for production scenarios requiring frequent product changeovers. During changeovers, the equipment can be quickly cleaned and put into service for the next product, effectively preventing cross‑contamination.
Scenarios with strict workshop environment requirements. For companies that need to pass food safety audits and environmental inspections, Gaofu's dust‑free feeding station – with its fully enclosed negative‑pressure design – effectively controls workshop dust concentration, helping companies meet the requirements of standards such as the General Hygiene Standard for Food Production.
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.
