Over 10,000+ customers' choice, Focus on screening industry 40+ years
Tomato paste is one of the most widely used condiments in the food industry. From tomato ketchup for dipping fries, to tomato puree and tomato paste for cooking, different categories of tomato products have strict requirements for the fineness and purity of the paste.
However, tomato paste filtration and screening are far from straightforward.
Tomato paste is a highly viscous, high‑solids slurry material. During the pulping process, solid impurities such as tomato skins, seeds and fibres become mixed into the paste. If not filtered, these impurities will directly affect the smoothness and appearance of the tomato paste. Even more problematic is that tomato paste is rich in sugars, organic acids and moisture – making it an ideal medium for microbial growth. If filtration equipment has hygiene dead corners or rough surfaces, residual paste will readily harbour bacteria and mould, directly threatening food safety.
Filtration accuracy and hygienic cleanliness are two hard indicators that tomato paste screening equipment must meet simultaneously.
The Gaofu S49 series mirror‑polished stainless steel tomato paste rotary vibrating sieve is a specialised machine designed specifically for the above requirements. With mirror‑polished stainless steel internal surfaces for dead‑corner‑free cleaning and prevention of paste residue, three‑dimensional gyratory motion for efficient solid‑liquid separation, and a fully enclosed structure for clean production, it provides a professional and reliable filtration solution for tomato paste producers.
The most easily overlooked yet most critical problem in tomato paste filtration is cleaning dead corners on the equipment surface.
Tomato paste is highly viscous. Once it adheres to crevices or rough surfaces on the internal walls, ordinary rinsing cannot remove it completely. Residual paste quickly becomes a breeding ground for microorganisms at room temperature – bacteria and mould multiply rapidly in the sugar‑ and nutrient‑rich paste, directly contaminating the next batch. For tomato paste producers that need to pass food safety audits, inadequate equipment cleaning is a common point of deduction.
The Gaofu mirror‑polished stainless steel tomato paste rotary vibrating sieve solves this problem through both material selection and surface treatment.
Mirror‑polished internal surfaces – paste cannot adhere. All material‑contact parts of the equipment are made of food‑grade 304 stainless steel , with 316L stainless steel available upon request. The internal surfaces are mirror‑polished to a very low surface roughness (Ra ≤ 0.4μm). The smooth, dense surface gives tomato paste no place to adhere – the paste slides off smoothly under gravity, without forming accumulation layers on the internal walls. Studies have shown that lower surface roughness reduces the risk of microbial adhesion and biofilm formation. Mirror‑polished surfaces physically reduce the possibility of microbial attachment and growth.
Dead‑corner‑free design – no blind spots in cleaning. All internal corners feature rounded transitions, and welds are ground smooth – no hygiene dead corners. The whole machine has a simple structure with nowhere for paste residue to hide. During cleaning, high‑pressure water jets can reach every corner of the internal surfaces, and cleaning results can be verified by visual inspection.
Corrosion resistance and no peeling. 304/316L stainless steel offers good resistance to the organic acids (citric acid, malic acid, etc.) present in tomato paste. The mirror‑polished surface is integral with the base material, with no risk of coating peeling, and remains smooth even after long‑term use.
"Mirror‑polished surfaces" and "easy cleaning" are two sides of the same coin – smooth surfaces prevent paste from adhering, and during cleaning, dirt has nowhere to hide; thorough cleaning in turn ensures the purity of the next batch. For highly viscous, highly nutritious materials such as tomato paste, this design provides a fundamental assurance of food safety at the equipment level.
While mirror‑polished stainless steel solves the cleaning problem, the core task of tomato paste filtration – removing solid impurities such as skins, seeds and fibres – also requires efficient technical support.
The Gaofu S49 series tomato paste 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 tomato pastes of different viscosities and impurity contents.
The value of this three‑dimensional gyratory motion for tomato paste filtration lies in three aspects:
First, rapid spreading of the paste for efficient passage through the screen. The high‑frequency, low‑amplitude excitation force causes the highly viscous tomato paste to spread quickly into a thin layer on the screen surface, reducing flow resistance and allowing the paste to pass through the screen rapidly. The equipment can achieve filtration precision down to 5 microns , effectively intercepting fine particles and suspended solids in the tomato paste.
Second, automatic discharge of impurities for continuous operation. Solid impurities retained on the screen surface – such as skins, seeds and fibres – move along the screen under vibration and are automatically discharged from the reject port. The equipment can run 24 hours continuously without frequent stoppages for cleaning.
Third, multi‑deck classification – one machine, multiple uses. The equipment can be configured with 1 to 5 screen decks , enabling simultaneous separation into 2 to 6 grades. From coarse filtration to remove large skin and seed particles, to fine filtration for a smooth, refined tomato paste – a single machine covers the full range of requirements.
Advantage 1: Fully enclosed structure – splash‑proof and contamination‑proof. During vibratory filtration, the tomato paste tends to splash out from the feed port, causing material waste and workshop contamination. The Gaofu tomato paste rotary vibrating sieve features a fully enclosed structure , with the filtration process taking place inside a sealed chamber to prevent splashing. The fully enclosed design also effectively blocks external foreign matter and dust from entering the filtration system, ensuring the purity of the tomato paste.
Advantage 2: Food‑grade 304/316L stainless steel – hygiene assured. All material‑contact parts are made of food‑grade stainless steel , complying with food contact material safety standards. Seals are made of food‑grade silicone, non‑toxic and odourless, ensuring that the entire filtration process does not contact any non‑food‑grade materials.
Advantage 3: Quick screen changes – adapting to multi‑variety production. Different tomato paste products require different filtration fineness – tomato ketchup needs a smoother paste, while tomato puree may retain some texture. The Gaofu tomato paste rotary vibrating sieve features a quick‑change screen structure , allowing screen changes in just 3 to 5 minutes. When switching between different products, screen changes are convenient and efficient, greatly reducing downtime.
Advantage 4: 360° adjustable discharge ports – flexible line integration. The discharge ports can be rotated 360° around the axis, facilitating the arrangement of auxiliary equipment. Regardless of workshop layout, it can flexibly connect to upstream and downstream equipment, adapting to the installation requirements of different production lines.
Advantage 5: Long equipment life – controllable total cost. The equipment has a normal service life of 15 to 20 years. The mirror‑polished stainless steel construction is corrosion‑resistant and easy to clean, reducing maintenance frequency and long‑term replacement costs.
From the perspective of actual production conditions in tomato paste processing, the Gaofu S49 series mirror‑polished stainless steel rotary vibrating sieve delivers value in four dimensions:
Hygiene value – Mirror‑polished stainless steel internal surfaces and dead‑corner‑free design make the equipment easy to clean with no paste residue. The smooth surface physically reduces microbial attachment and growth, helping enterprises meet the hygiene requirements of food GMP and HACCP systems.
Quality value – Skins, seeds, fibres and other impurities are effectively intercepted, resulting in a smooth, high‑purity tomato paste. The finished paste has a consistent texture and good appearance, improving product grade and consumer acceptance.
Efficiency value – The equipment can run 24 hours continuously, with impurities automatically discharged without manual intervention. The quick‑change screen design reduces product changeover time to 3 to 5 minutes, and the overall capacity of the production line is fully utilised.
Compliance value – Food‑grade stainless steel, mirror‑polished dead‑corner‑free design and fully enclosed structure ensure that the equipment complies with food production hygiene standards. In food safety audits and customer factory inspections, standardised filtration equipment and regulated cleaning processes give products stronger compliance credibility.
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.
