Over 10,000+ customers' choice, Focus on screening industry 40+ years
The loss of food powders during cross‑process transfer often occurs in ways that are "invisible":
Dust emission – visible waste. Materials such as powdered sugar and milk powder have fine particles and low bulk density. During open pouring, belt conveying, or manual handling, large quantities of fine powder escape from equipment gaps and connection points into the workshop air. Every dust emission represents raw material loss. In traditional manual feeding, raw material loss rates often reach 3% to 5%.
Extrusion and friction in mechanical conveying – hidden loss from particle breakage. Mechanical conveying equipment such as screw conveyors and tubular chain conveyors rely on spiral blades or chains to forcibly push material forward. For relatively fragile powder materials such as powdered sugar and milk powder, this "mechanical impact + friction" conveying method readily causes particle breakage. In one food company's existing tubular chain conveyor system, the breakage rate of flake materials exceeded 5% – the resulting fines not only affected finished product quality but also directly caused raw material waste.
Pipe residue and spillage during transfer – the cumulative "hidden black hole." After material transfer in conventional conveying equipment, large quantities of powder often remain on pipe walls and in hopper corners – this residue is difficult to recover and may contaminate subsequent batches, causing cross‑contamination.
Gaofu's negative‑pressure food powder vacuum conveying system effectively reduces powder loss because its working principle is fundamentally different from mechanical conveying methods:
Replacing "mechanical forced pushing" with "gentle airflow conveying."
Traditional mechanical conveying relies on spiral blades or chains to apply force to the material – material continuously impacts and rubs against equipment walls during forward movement. Gaofu's vacuum conveying system works completely differently: the vacuum pump evacuates the system, creating a vacuum state. Powdered material is drawn into the suction nozzle with outside air, forming an air‑material mixture that travels through the enclosed conveying pipe to the hopper. Material moves through the piping in a suspended state, with greatly reduced collision and friction against pipe walls.
In simple terms: traditional mechanical conveying "pushes material along" – material is lost through extrusion and friction; Gaofu's vacuum conveying "lets material float through the airflow" – material moves in suspension, with greatly reduced collision and friction.
Fully enclosed pipe conveying – completely eliminating dust emission and spillage.
The entire conveying process takes place in a sealed system with no powder leakage. It completely eliminates material "spillage, leakage, emission, and drip" during conveying. The piping can achieve "zero" residue. For high‑value food ingredients such as powdered sugar and milk powder, this means dust has no opportunity to disperse at the transfer source – every gram of material is effectively collected.
Low‑breakage, gentle conveying – preserving material integrity.
Compared with the "forced pushing" of tubular chain conveying, negative‑pressure pneumatic conveying uses gentle airflow to move material forward – reducing collision and friction between material and pipe walls. Combined with polished pipe interiors (surface roughness Ra≤0.8μm), material breakage rate is significantly reduced. In a potato flakes conveying case study, material breakage rate dropped from 5% to below 1% .
Pulse‑jet cleaning system – 100% recovery of collected dust.
The equipment is equipped with a compressed air pulse‑jet cleaning system that blows back through the filters during each discharge cycle, dislodging powder adhering to the filter surface. Collected dust is 100% returned to the hopper, with material loss ≤0.5% .
While reducing powder loss, the negative‑pressure vacuum conveying system brings systematic environmental improvements to food workshops:
Significantly reduced workshop dust concentration – meeting cleanroom standards.
The fully enclosed negative‑pressure conveying keeps pipe pressure below atmospheric pressure – even if there are minor gaps in the piping, no dust will escape. In actual applications, workshop dust concentration dropped from 8 mg/m³ to below 0.3 mg/m³ – fully compliant with food industry cleanroom standards. Numerous customers have reported that after system implementation, workshop dust concentration can be stably maintained below 0.5 mg/m³ – far below industry compliance standards.
Fully enclosed negative‑pressure conveying – the "guardian" of the workshop environment.
Gaofu's vacuum feeder uses a fully enclosed negative‑pressure conveying principle – the entire conveying process takes place in enclosed piping. It completely eliminates dust emission during feeding and conveying – effectively solving the dust emission problem and helping create a dust‑free workshop that meets GMP clean production standards for the food and pharmaceutical industries.
Automated feeding – reducing manual intervention and exposure.
The equipment uses a vacuum pump to generate negative pressure suction – automatically conveying powder and granular materials to designated locations. Operators no longer need to manually handle, weigh, or dump ingredients – significantly reducing personnel exposure to dusty environments.
Extended cleaning cycles – reduced maintenance costs.
With reduced workshop dust concentration, walls and equipment surfaces no longer accumulate powder frequently – cleaning cycles can be extended by over 3 times – significantly reducing cleaning labour input. The quick‑release structural design with no dead corners facilitates routine inspection and cleaning.
Gaofu's negative‑pressure food powder vacuum conveying system allows flexible piping routing according to workshop layout – conveying capacity covers 200 kg/h to 6,000 kg/h , with conveying distance reaching 5‑30 metres. The equipment body and all material‑contact parts are made of 304/316L food‑grade stainless steel – meeting food industry hygiene standards. The system can be equipped with a dust explosion protection system (CNEX certified) and CIP cleaning interfaces.
Automated feeding is 3‑5 times faster than manual operation – single‑line capacity can be increased by over 30% ; one system can replace 3‑5 workers .
Gaofu's negative‑pressure food powder vacuum conveying system is widely suitable for enclosed conveying of various food powders and granular materials:
Powdered sugars: White sugar powder, rock sugar powder, icing sugar, etc.
Starches: Corn starch, potato starch, wheat starch, etc.
Dairy products: Milk powder, skimmed milk powder, whey powder, etc.
Bakery ingredients: Flour, premix powders, breadcrumbs, cocoa powder, etc.
Seasonings: Monosodium glutamate (MSG), chicken powder, salt, bay leaf powder, etc.
Food ingredients: Yeast powder, lactose, food additives, etc.
The cross‑process transfer of food powders requires not just "moving it and delivering it" but "delivering it cleanly, with minimal loss, and in a better environment" – completing dust‑free transfer from one point to another in enclosed piping – without emission, waste, or contamination. There is an inherent conflict between the "squeeze + friction" of traditional mechanical conveying methods and the "fragile + sensitive" nature of food powders. Gaofu Machinery's negative‑pressure food powder vacuum conveying system – with its negative‑pressure pneumatic gentle conveying for reduced particle breakage, fully enclosed piping for eliminating dust emission and spillage, pulse‑jet cleaning for 100% material recovery, and automated feeding for reduced manual intervention – reduces powder loss at the source while optimising the workshop production environment.
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.
