Over 10,000+ customers' choice, Focus on screening industry 40+ years
Herbal tea is a traditional beverage made by scenting tea leaves with fresh flowers. From jasmine tea to osmanthus oolong, from rose tea to chrysanthemum tea, the quality of herbal tea depends not only on its aroma and taste but also on the integrity of its appearance and its purity.
However, the screening process in herbal tea processing presents unique challenges that are not encountered with ordinary tea.
The material composition of herbal tea is far more complex than that of plain tea – it contains both tea strips and dried flower petals, stamens and stems, as well as the fines and dust generated during processing, transport and storage. The core task of herbal tea screening is to separate the acceptable materials – petals, tea leaves, etc. – from flower stems, fines and impurities, while preserving the integrity of the petals and tea leaves as much as possible to avoid secondary breakage during screening.
Ordinary vibrating screens often struggle when handling herbal tea. While high‑frequency vibration offers high screening efficiency, it tends to break the already dried petals and tea leaves, generating more fines. Low‑frequency, high‑amplitude vibration, on the other hand, struggles to effectively separate impurities such as flower stems. Balancing accuracy with product protection is the central challenge that herbal tea screening equipment must solve.
The Gaofu S49 series gentle rotary vibrating sieve for herbal tea is a machine specifically designed for the unique screening requirements of herbal tea. With three‑dimensional gyratory motion for efficient classification and impurity removal, adjustable vibration parameters to suit different herbal teas, and a fully enclosed food‑grade stainless steel structure for hygiene safety, it ensures that herbal tea is screened cleanly with minimal breakage.
The Gaofu S49 series herbal tea 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.
The value of this three‑dimensional motion for herbal tea screening lies in three aspects:
First, material "rolls" rather than "jumps" on the screen surface. The three‑dimensional gyratory motion causes the herbal tea to move in a spiral outward trajectory on the screen surface, with the material continuously rolling and shifting rather than being thrown up and dropped at high frequency. This motion is gentler on the petals and tea leaves, reducing the risk of secondary breakage.
Second, extended screening path and high classification accuracy. The material travels along a spiral trajectory, giving every petal and every tea leaf multiple opportunities to contact the screen. The equipment can achieve screening fineness up to 600 mesh (0.02 mm) and filtration precision down to 5 microns. From coarse screening to remove flower stems to fine screening to separate fines, a single machine covers the full range of requirements.
Third, adjustable motion trajectory for different herbal teas. By adjusting the phase angle of the eccentric weights, the motion trajectory and residence time of the material on the screen surface can be changed. For different varieties and forms of herbal tea (such as jasmine tea, rose tea, chrysanthemum tea, etc.), the parameters can be flexibly adjusted to achieve the optimal screening effect.
The advantages of the Gaofu herbal tea rotary vibrating sieve in preserving the integrity of herbal tea forms come from the synergy of four design features.
Assurance 1: Controllable vibration intensity. Unlike the fixed excitation force of traditional vibrating screens, the vibration parameters of the Gaofu rotary vibrating sieve can be adjusted according to the fragility of the herbal tea. For varieties with thinner, more fragile petals (such as rose tea), the excitation force can be reduced and the residence time on the screen surface extended, completing the screening in a gentler manner.
Assurance 2: Three‑dimensional motion reduces impact. The three‑dimensional gyratory motion causes the material to move in a spiral trajectory on the screen surface. The collision intensity between particles, and between particles and the screen, is far lower than the vertical tossing of traditional vibrating screens. Herbal tea "rolls" more and "jumps" less during screening, significantly improving the intactness of petals.
Assurance 3: Multi‑deck classification – one pass, multiple steps. The S49 series rotary vibrating sieve supports 1 to 5 screen decks , enabling simultaneous separation into 2 to 6 grades. Taking the most typical three‑deck configuration for herbal tea screening as an example: the first deck (coarser mesh) removes large impurities such as flower stems and coarse twigs; the second deck (target mesh) separates the acceptable herbal tea; and the third deck (finer mesh) removes fines and dust. One machine, one feed – simultaneously completes the three steps of stem removal, classification and fines removal.
Assurance 4: Automatic discharge of impurities for continuous operation. During screening, impurities and oversize material automatically move along the screen surface to the reject port and are discharged without manual intervention. The equipment can run 24 hours continuously, effectively supporting the large‑scale production needs of herbal tea processors.
Advantage 1: Food‑Grade Stainless Steel – Ensuring Food Safety
Herbal tea is used directly for brewing and drinking, so equipment materials must meet strict hygiene requirements. All material‑contact parts of the Gaofu herbal tea rotary vibrating sieve are made of food‑grade 304 stainless steel , with 316L stainless steel available upon request. The equipment complies with food GMP standards, eliminating the risk of metal contamination at the material source. The Gaofu S49 series rotary vibrating sieve has been widely used in food, pharmaceutical, chemical and other industries.
Advantage 2: Fully Enclosed Sealed Structure – Dust, Moisture and Contamination Protection
During herbal tea screening, fines and dust tend to escape into the workshop air. The Gaofu herbal tea rotary vibrating sieve features a fully enclosed sealed structure , with screening taking place inside a sealed chamber – no mesh blockage, no powder escape. The fully enclosed design also effectively blocks external moisture and foreign matter, preventing secondary moisture absorption or contamination of the herbal tea during screening.
Advantage 3: Quick Screen Changes – Adapting to Multiple Herbal Tea Varieties
Different herbal tea varieties require different screening mesh sizes – jasmine tea requires protection of petal integrity, rose tea needs fine classification, and chrysanthemum tea requires removal of stamen debris. The Gaofu S49 series rotary vibrating sieve uses a mother‑child screen frame structure , allowing screen changes in just 3 to 5 minutes. The mother screen provides structural support, while the fine screen (working screen) performs the screening. When a different mesh size is needed, only the fine screen needs to be replaced; the mother screen can be used for a long time – reducing consumable costs while shortening downtime.
Advantage 4: CE and ISO Dual Certification – Quality Assured
Established in 1982, Xinxiang Gaofu Machinery Co., Ltd. has grown into a leading industry benchmark enterprise integrating R&D, production and sales over more than 40 years of development. The company was among the first in the industry to obtain ISO 9001:2008 International Quality Management System Certification and CE Safety Certification from TUV Rheinland Group. Products are exported to 128 countries and regions, including North America, Western Europe and Southeast Asia. CE certification confirms compliance with EU safety standards, while ISO certification reflects the company's standardised quality management system – dual certification provides reliable quality assurance for herbal tea processors in their equipment procurement decisions.
Advantage 5: Long Equipment Life – Controllable Total Cost
The Gaofu S49 series rotary vibrating sieve has a compact body, is easy to move, and features low noise and high throughput. The equipment has a normal service life of 15 to 20 years , with controllable long‑term operating costs. The unique mother‑child screen frame structure extends screen service life and reduces consumable costs.
From the perspective of actual production conditions in herbal tea processing, the Gaofu S49 series herbal tea rotary vibrating sieve delivers value in four dimensions:
Quality value – Flower stems are effectively removed, fines are precisely separated, and petal integrity is protected. The finished herbal tea has a complete appearance, high purity, and the consistency of aroma and taste is reliably assured.
Efficiency value – Multi‑deck screens complete multi‑stage classification with a single feed; impurities and oversize material 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 – Food‑grade 304 stainless steel and the dead‑corner‑free design make the equipment easy to clean with no material residue; the fully enclosed structure effectively controls dust escape. This helps enterprises meet the hygiene requirements of food GMP and HACCP systems.
Compliance value – CE safety certification and ISO 9001 quality management system certification give the equipment a compliance advantage in both export and domestic premium markets. In food safety audits and customer factory inspections, standardised classification equipment and international certification provide enterprises with 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.
