Over 10,000+ customers' choice, Focus on screening industry 40+ years
Soy sauce is a liquid seasoning produced by microbial fermentation of soybeans (or defatted soybeans), wheat and other raw materials. It is rich in amino acids, sugars, organic acids and various other components. However, it is precisely these abundant components that inevitably introduce large amounts of solid impurities during fermentation and pressing – soybean meal residue, bran particles, protein flocculates, and caramel colour particles generated during the fermentation process.
If these impurities are not effectively removed, they will directly affect the sensory quality of the soy sauce. Visible suspended solids will compromise the translucent texture of the soy sauce. Fine particles will slowly precipitate during storage, affecting product shelf‑life stability. For brewed soy sauce, translucent, bright red and sediment‑free are the first impressions consumers use to judge quality – and this impression largely depends on the accuracy of the filtration process.
Traditional filtration methods are mostly single‑stage – a single pass can only achieve either coarse or fine filtration. Coarse filtration is insufficient, leaving fine impurities behind. Fine filtration without prior coarse filtration allows large particles to impact the fine screen directly, accelerating blinding. Multi‑stage filtration is the key path for soy sauce screening to move from "coarse" to "refined."
The Gaofu S49 series soy sauce rotary vibrating sieve features multi‑deck screen configuration , supporting 1 to 5 screen decks and enabling simultaneous separation into 2 to 6 grades. Taking the most typical two‑deck, three‑outlet configuration for soy sauce filtration as an example:
First deck (coarse filtration layer): Relatively larger apertures intercept coarse impurities such as soybean meal residue, bran particles and large protein flocculates. Coarse residue is automatically discharged from the first outlet, preventing coarse impurities from directly impacting the fine screen.
Second deck (fine filtration layer): Finer apertures remove fine suspended solids, caramel colour particles and unfiltered fine impurities. After passing through this layer, the clarity of the soy sauce is significantly improved and it can proceed directly to the filling process.
The stepwise separation logic of "coarse filtration on the first deck, fine filtration on the second" brings two direct benefits: first, coarse impurities are intercepted early, so the fine filtration screen does not blind easily, greatly improving filtration efficiency; second, impurities of different particle sizes are each directed to their proper place, with coarse and fine residues discharged separately for easier subsequent handling.
The equipment can achieve screening fineness up to 600 mesh (0.02 mm) and filtration precision down to 5 microns. From coarse de‑slagging to fine purification, a single machine with a single feed completes the entire process.
The Gaofu soy sauce rotary vibrating sieve operates on the three‑dimensional gyratory motion principle. The equipment uses a vertical vibration motor as the excitation source, with eccentric weights installed at the upper and lower ends of the motor shaft converting the rotational motion into compound vibration in horizontal, vertical and tilting directions, which is then transmitted to the screen deck. By adjusting the phase angle of the upper and lower weights, the motion trajectory of the material on the screen surface can be changed to suit soy sauce of different concentrations and impurity contents.
The value of this three‑dimensional motion for multi‑stage soy sauce filtration lies in three aspects:
First, rapid spreading of the liquid for efficient passage through the screen. The high‑frequency, low‑amplitude excitation force causes the soy sauce to spread quickly into a thin layer on the screen surface, reducing flow resistance and allowing the liquid to pass through the screen rapidly. The equipment can filter slurry materials from 0 to 600 mesh.
Second, automatic discharge of impurities for continuous operation. Solid impurities retained on the screen surface – such as soybean meal residue and bran particles – move along the screen under vibration and are automatically discharged from the respective outlets. The equipment can run 24 hours continuously without frequent stoppages for cleaning.
Third, multi‑deck synergy in a single pass. Multiple screen decks operate simultaneously under three‑dimensional vibration, completing coarse and fine filtration in the same machine in a single pass. Material enters from the feed port, coarse residue is discharged from the coarse deck, fine residue from the fine deck, and acceptable soy sauce flows out from the bottom outlet – one machine, three outlets, stepwise separation.
As soy sauce is a seasoning consumed directly, the material and hygiene standards of the filtration equipment are non‑negotiable. The Gaofu soy sauce rotary vibrating sieve incorporates systematic design in the following areas:
304 stainless steel. The whole machine is made of 304 food‑grade stainless steel – corrosion‑resistant, non‑rusting, eliminating the risk of metal contamination. Surfaces are finely polished with no hygiene dead corners and are easy to clean.
Fully enclosed sealed structure. The equipment has a fully enclosed design, with screening taking place inside a sealed chamber. Soy sauce does not splash or leak during filtration, effectively preventing external foreign matter and dust from entering the filtration system and ensuring the purity of the soy sauce.
Mother‑child screen frame structure. The mother screen provides structural support, while the child screen (working screen) performs the screening. When the child screen wears out or a different mesh size is needed, only the child screen needs to be replaced; the mother screen can be used for a long time. Screen changes take only 3 to 5 minutes.
Rim‑type anti‑splash design. The equipment features a rim‑type design to prevent soy sauce from splashing out of the feed port during vibratory filtration. The large viewing port allows operators to observe the screen surface condition in real time and adjust the feed rate as needed.
From the perspective of actual production conditions in soy sauce processing, the Gaofu S49 series multi‑stage rotary vibrating sieve delivers value in four dimensions:
Quality value – Soybean meal residue, bran particles and protein flocculates are separated stepwise, significantly improving the translucent texture of the soy sauce. The finished soy sauce is bright red, clear, with no suspended solids and no sediment – enhancing product grade and market competitiveness.
Efficiency value – One machine completes the entire process from coarse to fine filtration, replacing multiple machines in series; impurities are automatically discharged without manual intervention; the equipment can run 24 hours continuously. The overall capacity of the production line is fully utilised.
Hygiene value – 304 stainless steel, the fully enclosed structure and dead‑corner‑free design make the equipment easy to clean with no material residue. The fully enclosed structure effectively prevents splashing and external contamination, helping enterprises meet the hygiene requirements of food GMP and HACCP systems.
Cost value – One machine replaces multiple machines in series, reducing equipment investment and floor space; the mother‑child screen structure extends screen service life; the quick‑change screen design (3 to 5 minutes) shortens downtime. Total operating costs are effectively controlled.
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
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.
