Over 10,000+ customers' choice, Focus on screening industry 40+ years
Cross‑Contamination: The "Accidental Encounter" of Different Materials
Spice processing workshops typically handle multiple product varieties – Sichuan pepper powder, cumin powder, chilli powder, five‑spice powder, compound seasonings, and more – with frequent changeovers between different materials. Under traditional open feeding and manual transfer modes, residue from the previous batch may contaminate the next batch, and different spices may also "cross‑flavour" each other through dust dispersion.
The impact of this cross‑contamination is direct and serious: for seasoning producers, product flavour consistency directly determines market reputation and repurchase rates. Sichuan pepper powder contaminated with cumin powder, five‑spice powder contaminated with chilli powder – any cross‑contamination can cause product flavour to deviate from standards, increasing batch‑to‑batch quality fluctuations. More critically, if allergenic substances beyond spices – such as whey protein or soy protein – are introduced through cross‑contamination, they may trigger allergic reactions in consumers, creating serious food safety risks.
Dust Emission: The Invisible "Cost Black Hole"
Spice powders typically range from 20 to 120 mesh, with low bulk density – during open bag opening and manual feeding, they readily generate dust. Dust escaping from equipment gaps and open areas into the workshop air not only pollutes the workshop environment and endangers operator health but also causes direct raw material loss. Under manual feeding, raw material loss rates often exceed 6% – for high‑value materials such as Sichuan pepper powder and cumin powder, every dust emission represents direct economic loss.
With over 40 years of experience in material handling, Gaofu Machinery has developed an intelligent spice feeding system specifically addressing the pain points of cross‑contamination and dust emission in the spice processing industry. Its core approach can be summarised in eight words: fully enclosed, actively isolated.
Fully Enclosed Pipe Conveying: Eliminating Cross‑Contamination at the Source
Gaofu's spice feeding system uses fully enclosed stainless steel pipe conveying – achieving full‑process enclosure from the feed point to the mixer. Raw materials enter an enclosed processing flow from the moment they arrive – 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.
All key contact parts are made of 304 or 316L food‑grade stainless steel , with internal surfaces mirror‑polished – no dead corners, minimal material residue. For common multi‑product changeover production in spice processing, this design effectively prevents residue from previous batches from contaminating the next batch. System connections use quick‑connect flange design for easy disassembly and cleaning – paired with a CIP (Clean‑In‑Place) system , it quickly removes raw material residue, effectively preventing cross‑contamination between different products – particularly suitable for small‑batch, multi‑product production needs.
Enclosed Dust‑Free Conveying: Leaving Dust "Nowhere to Escape"
To address dust emission, Gaofu's feeding system uses fully enclosed pneumatic conveying design – raw materials never contact air or personnel from feeding through conveying. Material "marches" through enclosed pipes and containers – effectively isolating external contamination and significantly reducing foreign matter intrusion risks. 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).
At the feeding stage, Gaofu's dust‑free feeding station features a fully enclosed negative‑pressure structure – with 99.9% dust collection efficiency and dust concentration controlled to ≤0.1 mg/m³. The feeding platform operates under negative pressure – no dust leakage, no material loss during feeding. This "active collection" rather than "passive defence" design philosophy ensures dust is captured and processed at the moment it is generated – with no opportunity to disperse.
Gaofu's spice feeding system's "full‑process enclosure" design is not an isolated optimisation at a single stage – it runs through the complete chain from unloading, storage, conveying, batching, to production.
Unloading and storage stage: Bulk materials are delivered directly to silos via dedicated tankers – avoiding secondary handling contamination.
Feeding stage: The dust‑free feeding station completes bag opening and feeding in an enclosed negative‑pressure environment – dust is efficiently collected, with no material loss.
Conveying stage: Fully enclosed stainless steel pipe conveying – raw materials never contact air or personnel throughout.
Batching stage: The system is equipped with an intelligent central control platform – monitoring batching data at each stage in real time – achieving full‑process traceability from raw materials to finished product.
The value of this closed‑loop design is: different spice varieties flow in their own independent enclosed systems – physically preventing cross‑contamination. Whether it is "cross‑flavouring" between Sichuan pepper powder and cumin powder, or accidental contact between allergenic substances and common raw materials – all are completely blocked by the physical isolation of enclosed piping.
Gaofu's spice feeding system has delivered quantifiable improvements for food producers in actual applications:
Dust control: Fully enclosed conveying reduces workshop dust concentration to ≤10 mg/m³ – far below national food safety standards – with significantly improved workshop cleanliness.
Cross‑contamination prevention: The fully enclosed pipe conveying and CIP online cleaning system work in synergy – effectively preventing cross‑contamination between different products – particularly suitable for small‑batch, multi‑product production needs.
Reduced raw material loss: The enclosed negative‑pressure environment ensures no material loss during feeding – reducing raw material waste at the source.
Compliance assurance: The system design complies with ISO22000, HACCP, and other food safety system certification requirements – helping food companies easily pass various food safety audits.
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.
