Over 10,000+ customers' choice, Focus on screening industry 40+ years
In traditional flour production lines, the lack of effective integration between material handling stages creates the following prominent issues:
Disconnection between unloading and storage. Flour arrives at the workshop and is manually carried to storage areas – during this process, dust disperses and material is exposed.
Disconnection between storage and screening. Flour is carried from storage to screening equipment – secondary transfer increases contamination risk.
Disconnection between screening and conveying. Screened flour must be manually or mechanically transferred to the next process – again exposed to the workshop environment.
Disconnection between conveying and metering. Before reaching the metering stage, flour requires manual weighing or separate metering equipment – inefficient and error‑prone.
Disconnection between metering and mixing. Weighed flour must be manually dumped into mixing equipment – adding operational steps and contamination risk.
Each disconnection point is an opportunity for dust dispersion, a risk of foreign matter contamination, and a node of efficiency loss.
The core principles of Gaofu's integrated vacuum feeder solution for flour production lines can be summarised as: replacing manual labour with piping, replacing open handling with enclosed conveying, and replacing manual operation with automation.
Integrated design – seven functions in one.
Gaofu's feeding system integrates seven functions – material unloading, storage, screening, impurity removal, batching, mixing, and packaging – into a single solution. It is not a simple stack of individual machines, but an integrated solution covering the entire production process. From the moment raw materials enter the plant, they enter an enclosed processing flow.
Modular configuration for flexible adaptation.
The system uses modular design, comprising four core units: a dust‑free feeding station, intelligent screening module, pneumatic conveying system, and visualisation control centre. It can be flexibly configured according to different production scenarios – bulk materials are delivered directly to silos via dedicated tankers, avoiding secondary handling contamination; small‑bag materials are opened and screened at the dust‑free feeding station, with dust collected in real time.
Fully enclosed operation – dust‑free throughout.
Using fully enclosed pneumatic conveying design, raw materials never contact air or personnel from feeding through conveying. The system effectively controls workshop dust concentration to ≤10 mg/m³, complying with the requirements of the General Hygiene Standard for Food Production (GB 14881‑2013). The internal surfaces of conveying pipes are mirror‑polished, with no dead corners and minimal material residue.
Stage 1: Raw material receiving and storage – direct tanker delivery + intelligent silos.
Bulk flour can be delivered directly to the workshop via dedicated tankers and transferred to intelligent silos using negative‑pressure conveying technology. Gaofu's intelligent raw material receiving unit uses negative‑pressure conveying technology for directional material transfer through enclosed piping, achieving conveying efficiency of 8‑12 tonnes per hour. Silos are equipped with top‑mounted dust collection devices that continuously purify dust within the silo – no raw material exposure or secondary contamination throughout.
For small‑bag flour, the dust‑free feeding station completes bag opening and feeding. The dust‑free feeding station intercepts dust and foreign matter carried over from transfer at the source. The feeding platform operates under negative pressure – no dust leakage, no material loss during feeding.
Stage 2: Screening and impurity removal – online screening, completed simultaneously.
Flour may form lumps due to moisture absorption or become contaminated with packaging debris during storage and transport. Gaofu's feeding system integrates a vibrating screening module – before entering the conveying pipe, raw materials pass through high‑efficiency screening to effectively remove lumps, impurities, and foreign matter. The online screening module is equipped with multi‑layer vibrating screens, simultaneously completing impurity separation, particle grading, and other pre‑treatment processes, with screening accuracy adjustable from 100‑300 mesh. The screened fine flour is then conveyed through enclosed piping to the next process – achieving integrated "screening‑conveying" operation.
Stage 3: Conveying and transfer – positive/negative pressure pneumatic conveying.
Gaofu's flour production line is equipped with a dual‑mode positive + negative pressure pneumatic conveying system. Negative‑pressure vacuum conveying enables rapid material transfer and storage; positive‑pressure conveying, combined with high‑precision weighing sensors, achieves precise metering. Conveying capacity covers 200‑6000 kg/h, with conveying distances of 1‑30 metres. Fully enclosed pipe conveying – dust‑free, leak‑free – keeps the workshop clean. Material loss during conveying is minimal, and material properties are not compromised.
Stage 4: Precise metering – online weighing with controlled error.
For different material types – flour, sugar powder, oil, water – the system is equipped with dedicated automatic metering modules. Accuracy for flour and sugar powder ≤±0.5%, for oil and water ≤±0.3%. For medium‑to‑large batches, batching accuracy can reach ±0.2%. Multiple batching methods are available – gain‑in‑weight, loss‑in‑weight, and dynamic multi‑component. The online weighing hopper enables dynamic metering – precise flour metering is the prerequisite for "just‑right dough consistency and uniform gluten development."
Stage 5: Automatic mixing – sequence control, seamless operation.
The system incorporates an intelligent coordinated control module – flour, sugar powder, and other ingredients are automatically fed at the right rate according to the process sequence, without manual intervention, achieving seamless "feeding‑mixing‑forming" operation. The system can automatically adjust feed rate and timing according to production schedules, achieving synchronous coordination between processes. It can connect multiple mixers on a single pipeline – quantitative feeding does not occupy mixing time, significantly improving production rhythm.
The continuous conveying design from storage to mixing delivers quantifiable improvements for flour production lines:
Greatly enhanced quality stability. Fully enclosed operation effectively controls dust contamination and foreign matter risks. Precise metering and batching ensure consistent product composition batch after batch. Yeast activity retention rate increases to over 95%.
Significantly improved production efficiency. Automated feeding is 3‑5 times faster than manual operation, increasing single‑line capacity by over 30%. Feed response speed increases by 300%, and overall equipment effectiveness improves by 20%.
Effective reduction in overall costs. One system can replace 3‑5 workers – no manual handling, weighing, or dumping of ingredients. Raw material conveying loss rate drops from 3% to 0.5%. Overall comprehensive costs decrease by 18%.
Easier compliance management. The system can interface with MES information systems – raw material usage data is uploaded in real time for digital management. Production data is collected and synchronised in real time, meeting food production compliance requirements.
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.
