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The vacuum roller is the core dewatering and transfer component in the wet end system of papermaking, undertaking the important tasks of efficient dewatering of paper width, smooth transfer and directional shaping of fibers. This product adopts an integrated design of high-strength duplex stainless steel roller body, precise micro-hole/helical groove structure and intelligent vacuum gradient control system. The roller body diameter covers 1200-2800mm, and it is suitable for a vehicle speed range of 800-3000m/min. Through the three-dimensional flow field optimization of the vacuum chamber and nano-scale surface engineering technology, Achieve multi-dimensional breakthroughs in dehydration efficiency, paper forming and operational stability: The roller surface is equipped with 10-200μm level precision micro-holes/bionic spiral grooves, combined with multi-stage independent vacuum zone control (up to 12 zones per roller), which can dynamically adjust the vacuum degree (-60kpa to -25kpa) and dehydration gradient according to the characteristics of the paper type (quantitative 30-600g/m²), and increase the dehydration rate by 25%-40% compared with traditional offset rollers. Meanwhile, the droplet entrainment rate is reduced to below 0.03% through the gas-liquid separation dynamic equilibrium technology to ensure the cleanliness of the white water circulation system. The roller body adopts a laser cladding + cryogenic diffusion strengthening process, with the surface hardness increased to HRC55-60. Combined with a superhydrophobic self-cleaning coating (contact Angle ≥150°), the anti-fiber adhesion performance is enhanced by 80%, and the cleaning and maintenance cycle is extended by three times. Integrating pressure pulsation monitoring sensors and AI vacuum compensation algorithms, it can compensate for vacuum attenuation caused by pulp fluctuations and vehicle speed changes in real time, keeping the paper breakage rate within 0.05‰. It is particularly adept at handling paper types with strict requirements for forming quality and production continuity, such as high bulk thickness cardboard, ultra-thin food cardstock, and aseptic packaging base paper. The comprehensive energy efficiency of a single machine has been increased by 15% to 22%, and the white water consumption per ton of paper has been reduced by 0.8 to 1.2 cubic meters, helping paper enterprises break through the technical bottlenecks of low basis weight, high speed, and zero paper breakage.
| Technical parameters | |
| Roll diameter | customized |
| Rubber type and thickness | customized |
| Roll body material | stainless steel 304,316,316L ,2205 duplex stainless steel |
| Cylinder head | Cast steel/Forged 42CrMo/Ductile iron |
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