Over 10,000+ customers' choice, Focus on screening industry 40+ years
Spice powders typically range from 20 to 120 mesh, with low bulk density and a high proportion of fines. In traditional big‑bag feeding methods, dust emission mainly originates from the following areas:
Large dust release during bag opening. The moment the big‑bag discharge spout is cut open, fine powder accumulated at the spout rapidly disperses with air currents. In traditional open bag opening, dust can travel several metres.
Continuous emission during discharge. As material flows from the big bag into the feed hopper, fine powder is "squeezed" through gaps between the discharge spout and the hopper, continuously dispersing into the workshop air.
Air currents generated by material impact. When powder falls from the big bag and impacts the bottom of the feed hopper, it drives surrounding air to form localised air currents – fine powder particles are carried by these air currents and escape.
The impact of dust emission is multi‑dimensional: it not only causes direct raw material loss (spices are high‑value materials – every dust emission represents direct economic loss) but also pollutes the workshop environment, increases cleaning burdens, and poses potential respiratory health risks to operators with long‑term exposure to high‑concentration dust environments. For seasoning producers needing to pass food safety audits, inadequate dust control is often a "deduction point" during inspections.
The design logic of Gaofu's spice big bag feeding station is fundamentally different from traditional open feeding methods – it does not deal with dust "after it is generated," but prevents it from ever having the chance to disperse at the source.
Its dust control principle can be summarised in three keywords: enclosed, negative pressure, and filtration.
Enclosed – structurally blocking dust dispersion paths. After the big bag is hoisted into position, the bag clamping mechanism seals the big‑bag discharge spout to the equipment feed inlet , forming an enclosed chamber. The entire bag opening and discharge process takes place within this enclosed environment – dust has no escape route. The entire machine features a fully enclosed structure – from the feed inlet to the discharge outlet, all connections are sealed, completely eliminating dust leakage during production.
Negative pressure – active collection rather than passive defence. During discharge, the equipment's negative‑pressure dust collection system operates throughout the entire process. A dust collection fan generates a negative‑pressure environment (-0.4 to -0.6 bar), directionally drawing dust generated during feeding into the filtration device. This active collection method is more effective than simply relying on an enclosed structure – as soon as dust is generated, it is captured and processed, with no opportunity to disperse. After feeding is completed, the pulse‑jet cleaning system activates – dust adhering to the filter elements is blown back into the feed hopper, achieving material recovery and reuse.
Filtration – achieving complete air‑dust separation. Dust‑laden air enters the filtration system, where high‑efficiency filter elements capture dust particles. Dust is retained by the filters, and clean air is exhausted through the discharge system. For ultra‑fine materials like spice powders, the filtration system effectively captures micron‑level dust particles, ensuring clean exhaust air.
Gaofu's spice big bag feeding station – with its fully enclosed negative‑pressure design – delivers quantifiable improvements for spice processing workshops:
Significantly reduced workshop dust concentration. The fully enclosed structure, combined with the negative‑pressure dust collection system, substantially reduces dust concentration in the feeding area. Workshop air dust concentration drops significantly – walls and equipment surfaces no longer accumulate powder frequently, and cleaning cycles are significantly extended.
Greatly reduced material loss. No dust emission means no material spillage – every gram of spice powder is effectively collected. For high‑value materials like Sichuan pepper powder and cumin powder, this loss control accumulates into substantial long‑term savings.
Effective prevention of cross‑contamination. The fully enclosed structure keeps different materials flowing in their own enclosed systems – physically preventing cross‑contamination. For production lines requiring frequent changeovers between different spice varieties (such as Sichuan pepper powder, cumin powder, chilli powder, etc.), this design is particularly important.
Improved operator working conditions. Operators no longer need to work in dusty environments or wear heavy protective gear. Improved work experience directly contributes to employee stability and motivation.
Beyond the core function of dust control, Gaofu's spice big bag feeding station incorporates several optimisations for the special requirements of spice processing:
Assisted discharge devices – handling spice lumps. Spice powders in big bags may form lumps due to compression or moisture absorption during storage, and bridging may occur during discharge. Gaofu's big bag feeding station is equipped with a tapping device and vibration device – the tapping device helps material flow out of the big bag, and the vibration device breaks bridges, ensuring smooth material flow.
Food‑grade stainless steel construction – ensuring hygiene and safety. All spice‑contact parts are made of 304 food‑grade stainless steel , complying with food hygiene standards. Smooth surfaces resist material adhesion, are easy to clean, and have no dead corners.
Seamless integration with downstream equipment. After feeding is completed, material can be directly conveyed through enclosed piping to the next process – achieving fully enclosed operation from feeding to conveying, without manual handling – eliminating secondary dust emission and cross‑contamination.
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
Originated in the 1980s, Xinxiang Gaofu Machinery Co., Ltd. has developed into a leading enterprise after more than 40 years of steady development. The company holds authoritative national qualifications including National-level Specialized, Refined, Unique and Innovative Little Giant Enterprise, National Green Factory, National High-tech Enterprise, and National Intellectual Property Advantage Enterprise, and acts as the President Unit of the Vibration Industry Association.
It has established three provincial and municipal R&D platforms: Henan Provincial Industrial Design Center, Henan Provincial Engineering Technology Research Center for Intelligent On-line Screening System, and Xinxiang Municipal Fine Screening Engineering Technology Research Center. Up to now, Gaofu has obtained more than 500 patents covering invention, utility model and design. It has been awarded the Science and Technology Achievement Prize by the Ministry of Industry and Information Technology of China and has participated in drafting and formulating 4 national standards.
Gaofu’s product portfolio covers multiple series and hundreds of specifications, mainly including vibrating screening equipment, conveying equipment and intelligent automatic material handling systems. We provide one-stop overall solutions such as automatic feeding systems, powder supply systems, pneumatic conveying systems, metering and weighing systems, batching systems, micro-ingredient batching systems, water supply systems, oil supply systems, fluid conveying systems, central kitchen powder supply systems, powder conveying systems and feeding systems.
In terms of food production lines, our mature supporting systems cover two major categories: baking production lines and pasta production lines. The baking series includes production lines for bread, cake, crisp cake, croissant, toast, pizza, biscuit and hamburger. The pasta series includes intelligent production lines for steamed buns, stuffed buns, twisted rolls, sesame paste cakes, steamed dumplings, boiled dumplings, fried dough sticks and pies.
Gaofu products sell well across Greater China and are exported to more than 100 countries and regions worldwide, including Russia, Canada, the United States, New Zealand, Japan, Brazil and South Africa. Widely applied in food, pharmaceutical, chemical, metallurgical, building materials, mining, thermal power, environmental protection and other industries, our products have won the trust and recognition of over 10,000 global customers.
Adhering to the corporate mission of improving material quality and efficiency to meet customer needs, Gaofu has long-term stable cooperative relationships with global clients to achieve harmonious and win-win development. At present, Gaofu has become an official qualified supplier of many Fortune Global 500 enterprises, including CNPC, Sinopec, Sinochem Group, China Resources Group, Sinopharm Group, COFCO, China National Building Material, China Aerospace and Jinchuan Group.
