Over 10,000+ customers' choice, Focus on screening industry 40+ years
In the cross‑process transfer of food powders, achieving clean production faces three interconnected challenges:
Dust emission – the "primary enemy" of workshop cleanliness. Materials such as powdered sugar and milk powder have fine particles and low bulk density. During open pouring or belt conveying, large quantities of fine powder escape from equipment gaps and connection points into the workshop air. Dust not only causes raw material loss but can also migrate to other clean areas, compromising the segregation between different cleanliness zones.
Cross‑contamination – the "hidden risk" during multi‑product changeovers. Food processors typically handle multiple product varieties – with frequent changeovers between different materials. In traditional transfer methods, material is exposed to the workshop environment multiple times – residue from the previous batch may contaminate the next batch, and different powders may also "cross‑flavour" each other through dust dispersion, directly affecting product flavour consistency.
Manual intervention – the "uncontrollable variable" in cleanliness. During manual handling, weighing, and feeding, direct contact between operators and materials increases contamination risks. At the same time, variations in manual operations make cleanliness control difficult to standardise and replicate.
Gaofu's food powder vacuum conveying system effectively ensures clean production because its working principle is fundamentally different from traditional transfer methods.
Fully enclosed pipe conveying – structurally eliminating dust emission.
The system uses a fully enclosed negative‑pressure conveying principle – the entire transfer process takes place in enclosed piping. Material is drawn from the suction nozzle into the piping, travels through the enclosed conveying pipe to the hopper, undergoes air‑material separation, and then enters the receiving equipment – completely isolated from outside air throughout. Fully enclosed pipe conveying is dust‑free and leak‑free, keeping the workshop clean. For easily airborne food powders such as powdered sugar and milk powder, this means dust has no opportunity to disperse at the transfer source.
Negative‑pressure environment – active collection rather than passive defence.
The vacuum pump evacuates the system, creating a vacuum state. Powdered material is drawn into the suction nozzle with outside air. Unlike open transfer where dust "passively disperses," the negative‑pressure environment of vacuum conveying means dust is "actively collected" – material is drawn into the piping by negative‑pressure airflow rather than escaping. The negative‑pressure design keeps pipe pressure below atmospheric pressure – even if there are minor gaps in the piping, no dust will escape.
Pulse‑jet cleaning – continuous self‑cleaning of the filtration system.
The equipment is equipped with a compressed air pulse‑jet cleaning device that blows back through the filters during each discharge cycle, dislodging powder adhering to the filter surface. This design ensures the filtration system remains highly efficient during long‑duration continuous operation – preventing negative pressure drop or dust penetration from filter clogging.
In simple terms: traditional transfer is "people carry material, material is exposed, dust flies" – Gaofu's vacuum conveying is "material enters piping, piping is enclosed, no dust" – from the moment powder enters the piping until it reaches its destination, it never contacts outside air, and dust has no opportunity to be generated or dispersed.
While the fully enclosed structure addresses "where dust goes," food‑grade materials address "what contacts the material."
304/316L food‑grade stainless steel construction. The equipment body and all material‑contact parts are made of food‑grade stainless steel (304/316L) – with smooth surfaces that are easy to clean. Compliant with FDA/EU1935 food‑grade certification and GMP standards – contact surfaces are made of 316L stainless steel. This fundamentally eliminates the risk of material contamination from equipment rusting or wear.
Dead‑corner‑free design – easy to clean. The equipment structure is well‑designed with no hygiene dead corners – both internal and external surfaces are easy to clean. The quick‑release structure allows components to be quickly removed and installed – after cleaning, the equipment can be rapidly returned to operation. The equipment meets GMP standards and CIP cleaning requirements – capable of conveying sterile‑grade products.
Fully enclosed system – effectively preventing cross‑contamination between material and environment. The entire conveying process takes place in a sealed system with no powder leakage. Enclosed conveying effectively prevents material contact with the outside, preventing secondary contamination – particularly suitable for the food industry with extremely high hygiene requirements.
While the fully enclosed structure and food‑grade materials address the "hardware" aspects of cleanliness, automated control ensures standardisation and repeatability of clean production from the "operation" perspective.
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 and minimising cleanliness fluctuations caused by variations in manual operations.
PLC intelligent control – precise and reliable operation. The system is equipped with a PLC intelligent control system – supporting one‑touch start/stop, conveying volume monitoring, and automatic filter cleaning. The automatic level control system enables closed‑loop automated operation with low‑level automatic suction and full‑level automatic shutdown with pressure holding. Precise control reduces quality risks from human operational errors.
Conveying capacity covers 200‑6,000 kg/h. Meeting various needs from laboratory R&D to large‑scale production. Conveying distance reaches 5‑30 metres – flexibly configurable according to workshop layout.
The systematic design of Gaofu's food powder vacuum conveying system in ensuring clean production delivers quantifiable practical value for food processors:
Significantly improved workshop environment – easily passing GMP audits. The fully enclosed negative‑pressure conveying substantially reduces dust concentration in the workshop air – walls and equipment surfaces no longer accumulate powder frequently, and cleaning cycles are significantly extended. The system complies with CGMP and EU GMP requirements – helping food companies easily meet increasingly stringent environmental and food safety regulatory requirements.
Greatly reduced material loss – lowering raw material costs. Fully enclosed pipe conveying means no spillage or waste during transfer – the piping can achieve "zero" residue. For high‑value food ingredients such as powdered sugar and milk powder, this loss control accumulates into substantial long‑term savings.
Effective prevention of cross‑contamination. The fully enclosed system keeps different materials flowing in their own enclosed piping – physically preventing cross‑contamination. For production lines requiring frequent changeovers between different food powder varieties, this design is particularly important.
Greater confidence in production compliance. The equipment design complies with GMP standards – meeting the clean production requirements of the food industry. The entire machine design meets the source‑level clean production requirements of the food and pharmaceutical industries – helping food companies build a complete clean production system from feeding to conveying.
Gaofu's 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 (high‑gluten/low‑gluten/all‑purpose), premix powders, breadcrumbs, cocoa powder, etc.
Seasonings: Monosodium glutamate (MSG), chicken powder, salt, spice powders, etc.
Food ingredients: Yeast powder, premix powders, food additives, etc.
Achieving clean production in the cross‑process transfer of food powders does not rely on any single technology – it requires the systematic synergy of fully enclosed pipe conveying, food‑grade stainless steel construction, and automated intelligent control. Gaofu Machinery's food powder vacuum conveying system – with its core design philosophy of "material enters piping, piping is enclosed, no dust" – enables dust‑free transfer of food powders from one point to another in enclosed piping, ensuring clean production operations at the transfer stage.
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.
