Over 10,000+ customers' choice, Focus on screening industry 40+ years
In the fine screening and grading of coffee powder, production sites are often plagued by three stubborn problems:
Challenge 1: Oil adhesion causes frequent screen blinding. Coffee beans contain natural oils, which are released during roasting and cause the ground coffee to adhere readily to the screen surface. When product particle size approaches 30 microns, mesh blinding becomes particularly severe. Once fines block the mesh, screening efficiency plummets, forcing frequent stoppages for cleaning and significantly reducing throughput.
Challenge 2: High‑speed vibration damages the powder. Traditional vibrating screens rely on high‑frequency, large‑amplitude motion to achieve separation. However, for fragile materials like coffee powder, intense vibration causes excessive particle breakage, generating excessive fines that compromise extraction uniformity and flavour purity.
Challenge 3: Noise and dust – the workshop environment pain. Traditional screening equipment generates high noise levels and allows dust to escape, degrading operator working conditions while increasing material loss and cleaning costs.
The Tumbler Screen: A "Gentle Revolution" in Hand‑Screening Emulation
The design philosophy of Gaofu's GFBD tumbler screen is rooted in a deep understanding of traditional hand‑screening principles and their precise mechanical reproduction.
It doesn't "bounce" – it "rocks" and "sways". Traditional vibrating screens cause material to bounce violently on the screen surface. The tumbler screen, in contrast, uses an adjustable‑eccentricity exciter to generate a non‑linear three‑dimensional motion – the material's trajectory on the screen surface is a combination of radial displacement and circular motion (spiral motion). The gentle acceleration combined with low‑speed rotation keeps the material rolling smoothly across the screen surface. This gentle motion effectively reduces damage to coffee powder particles. For applications where particle integrity is critical – such as spray‑dried coffee – the GFBD tumbler screen reproduces the gentleness and precision of hand screening.
The "low‑noise clean" design of Gaofu's GFBD tumbler screen is not simply a collection of parameters – it is a systematic engineering approach developed through deep insight into premium coffee production scenarios.
Quiet operation with noise levels as low as 60‑70 decibels. Thanks to its simple modular design and low‑speed operation, the GFBD tumbler screen maintains noise levels consistently between 60‑70 dB. This is far below the noise levels of traditional vibrating screens, ensuring a smooth and quiet workshop environment and freeing operators from high‑decibel noise exposure.
Low energy consumption reduces long‑term operating costs. The GFBD tumbler screen uses TEFC motors – a small unit requires only 0.25 kW of drive power, and even a large 2‑tonne unit needs just 5.5 kW. Low energy consumption means lower electricity costs and reflects a commitment to sustainable production.
Fully enclosed dust‑proof design protects workshop cleanliness. The GFBD tumbler screen features a fully enclosed structure with optional airtight and vacuum designs. Apart from the existing ventilation system, the equipment requires little to no additional air purification or dust collection auxiliary devices. The fully enclosed structure effectively prevents coffee powder dust from escaping during screening, protecting the clean workshop environment while reducing material loss.
Fine Grading: Quality Assurance for Premium Coffee Powder
For high‑end coffee powder, particle size uniformity directly determines extraction consistency and stable flavour expression. Gaofu's GFBD tumbler screen provides reliable quality assurance in fine grading.
Multi‑layer grading completes multiple separations in one pass. The GFBD tumbler screen can be equipped with 4 to 5 screen decks, simultaneously providing 5 to 6 fractions. Material enters from the centre of the almost‑horizontally moving screen body and spreads outward along spiral curves, with each deck achieving fine particle size separation. For production scenarios requiring coffee powder to be divided into different particle size grades (e.g., espresso ultra‑fine, pour‑over medium‑fine, etc.), a single machine completes the entire operation.
High screening accuracy ensures product yield. The GFBD tumbler screen achieves screening accuracy of 90% to 95% , with output per unit area 5 times that of traditional equipment. High accuracy means less rework and higher product qualification rates.
Multiple cleaning systems for different material characteristics. To address the oily, adhesive, and electrostatic nature of coffee powder, the GFBD tumbler screen can be equipped with bouncing‑ball cleaning, independent gear‑driven brush cleaning, air‑jet cleaning, and ultrasonic cleaning systems. For example, ultrasonic systems effectively resolve mesh blinding issues for fine powders (e.g., 100 mesh and above) through high‑frequency vibration transmission. Whatever the oil content or fineness of the coffee powder, there is a suitable cleaning solution.
Premium coffee production typically runs continuously – equipment downtime means the entire line stops. The GFBD tumbler screen's maintenance‑friendly design effectively supports production continuity.
Quick disassembly – maintenance in 15 minutes. The equipment can be simply and quickly disassembled and reassembled in as little as 15 minutes. With minimal bearing lubrication requirements, it supports 24/7 full‑load continuous operation.
Long screen life, low replacement frequency. Based on drum‑tightening principles, the screen mesh is tightly secured to the frame with special adhesive or welding. Thanks to gentle acceleration and low stress, screen life is significantly extended, reducing the hassle and cost of frequent screen changes.
Negligible dynamic base load for flexible installation. Every GFBD tumbler screen is balanced on a special test rig before delivery, achieving near‑perfect balance. The dynamic base load is extremely low – the equipment can even be installed on high steel structures. This feature provides greater flexibility in workshop layout.
About Gaofu
Xinxiang Gaofu Machinery Co., Ltd. was originally founded in the 1980s. After more than 40 years of development, the company has become a "National Specialized and Sophisticated 'Little Giant' Enterprise", a "National Green Factory", a "National High-tech Enterprise", a "National Intellectual Property Advantage Enterprise", and the "President Unit of the Vibration Association". It also hosts the "Henan Provincial Industrial Design Center", the "Henan Provincial Engineering Technology Research Center for Intelligent Online Screening Systems", and the "Xinxiang Municipal Engineering Technology Research Center for Fine Screening". The company has been granted more than 500 invention, utility model and design patents, has received the "Science and Technology Achievement Award" issued by the Ministry of Industry and Information Technology, and has participated in drafting four "National Standards".
Gaofu's product portfolio covers several series and hundreds of varieties, including vibrating screening equipment, conveying equipment, coal crushing equipment, filtration equipment, and automated material handling systems. Its main products include vibrating screens, screening machines, vibrating sifters, rotary vibrating screens, ultrasonic vibrating screens, linear screens, air flow screens, gyratory screens, roller screens, dewatering screens, bar screens, vacuum feeders, dust-free feeding stations, ton bag feeding stations, feeding systems, automatic powder feeding systems, automatic slag discharge filters, leaf filters, clay filters, toothed roll crushers, coal crushers, and other equipment. These are widely used in many industries such as food, pharmaceuticals, chemicals, metallurgy, building materials, mining, thermal power, and environmental protection, earning the trust and praise of over 10,000 customers worldwide.
Gaofu products are not only popular in Greater China but are also exported to more than 100 countries and regions, including Russia, Canada, the United States, New Zealand, Japan, Brazil, South Africa, etc. The company adheres to its mission: "Enhance material quality and efficiency, meet customer needs", walking side by side with customers for harmonious and win-win cooperation. Today, Gaofu has become an approved supplier to many Fortune 500 companies, including CNPC, Sinopec, Sinochem Group, China Resources Group, Sinopharm Group, COFCO Group, China National Building Material Group, China Aerospace, and Jinchuan Group.
Gaofu Machinery – Global No.1 in Vibrating Screen Sales. In May 2024, Frost & Sullivan, an international authoritative advisory firm, based on its research on the global vibrating screen market and calculated according to global vibrating screen sales volume in 2023, issued a market position confirmation certificate to Gaofu Machinery.
