The 380 double disc refiner is a core pulping equipment designed for medium and large-scale production lines in the papermaking industry. Its name derives from the nominal diameter of the refining discs (380mm). Leveraging the structural advantage of “double-disc counter-rotating refining”, it achieves efficient integration of fiber cutting and fibrillation. Widely adaptable to various raw materials such as wood pulp, waste paper pulp, and straw pulp, it can meet the refining needs of different paper grades including cultural paper, packaging paper, and tissue paper, making it the preferred equipment for balancing production efficiency, paper quality, and energy consumption costs.

I. Core Specifications and Parameters

1. Basic Structural Parameters

• Nominal diameter of refining discs: 380mm (core specification identifier, determining refining contact area and production capacity)
• Number of refining discs: 2 pieces (combination of moving disc + fixed disc, counter-rotating design improves fiber processing uniformity)
• Disc tooth profile: Customizable serrated, trapezoidal, spiral (adaptable to different refining goals, optional shear type/fibrillation type)
• Disc gap adjustment range: 0.1-1.0mm (electric precision adjustment, supporting dynamic adaptation to pulp characteristics)
• Equipment overall dimensions (L×W×H): Approximately 1800×1200×1500mm (compact design, saving installation space)
• Equipment weight: Approximately 1200-1500kg (adapting to the basic load-bearing requirements of production lines)

2. Operational Performance Parameters

• Adaptable refining concentration: Low consistency (3%-8%), medium consistency (8%-15%) (dual-concentration adaptation, flexibly matching production processes)
• Production capacity: 15-30t/d (single equipment, dynamically adjusted according to pulp type and refining intensity)
• Motor power: 110-160kW (national standard high-efficiency motor, power adapted to production capacity needs, optimized energy consumption ratio)
• Rated speed: 1500-3000r/min (frequency conversion speed regulation available, adapting to different refining intensity requirements)
• Disc linear speed: 23.8-47.7m/s (linear speed combined with tooth profile to achieve precise control of shear force)
• Feed pressure: 0.2-0.4MPa (stable feeding, ensuring refining continuity)
• Operating temperature: ≤80℃ (adapting to conventional pulp processing temperature, equipment heat resistance meets standards)

3. Material and Configuration Parameters

• Disc material: High-chromium alloy, stainless steel (optional) (wear-resistant and corrosion-resistant, extending service life, adapting to impurity-containing raw materials such as waste paper pulp)
• Main shaft material: 45# forged steel (quenched and tempered, high strength and stable operation)
• Sealing method: Combined mechanical seal + skeleton oil seal (double sealing, preventing pulp leakage and wear)
• Control system: PLC automatic control (supporting real-time monitoring and automatic adjustment of disc gap, speed, and production capacity, compatible with production line central control system)
• Safety protection: Overload protection, over-temperature protection, material shortage protection (multiple protections to ensure the safety of equipment and operators)

II. Core Technical Advantages

1. Efficient Refining with Strong Capacity Adaptability: The double-disc counter-rotating design ensures full contact between pulp and discs, with a processing capacity of 15-30t/d per unit time, meeting the capacity needs of single or multiple parallel equipment in medium and large-scale production lines. The refining efficiency is over 30% higher than that of single-disc refiners of the same specification.
2. Precise Fiber Modification: Through precision gap adjustment (0.1mm-level accuracy) and customizable tooth profiles, it can not only achieve moderate cutting of short fibers but also ensure fibrillation of long fibers, making the fiber length distribution more reasonable and improving paper strength and uniformity simultaneously.
3. Balanced Energy Consumption and Stability: Equipped with 110-160kW high-efficiency motors and frequency conversion speed regulation technology, the unit refining energy consumption is as low as 80-120kWh/t pulp, saving 15%-20% energy compared with traditional equipment; the double sealing and forged steel main shaft design reduce equipment failure rate, with continuous operation time reaching over 8000h/year.
4. Wide Adaptability and Easy Operation: Compatible with low and medium consistency refining processes, it can process various raw materials such as wood pulp, waste paper pulp, and straw pulp, adapting to different paper grades including cultural paper and packaging paper; the PLC automatic control system simplifies operation, supports remote monitoring and parameter adjustment, and reduces labor costs.

III. Application Scenarios and Suggestions

• Applicable production lines: Medium and large-scale papermaking production lines with a daily output of 100-500t, which can be used as main refining equipment or finishing refining equipment.
• Preferred paper grades: Cultural paper (writing paper, printing paper), packaging paper (linerboard, corrugating medium), tissue paper, etc., especially suitable for products with high requirements for fiber bonding force and paper uniformity.
• Application suggestions: When processing waste paper pulp, priority should be given to wear-resistant high-chromium alloy discs to reduce equipment wear caused by impurities; when producing high-strength packaging paper, medium consistency refining process (8%-12% concentration) can be adopted to improve fiber fibrillation degree; connect with the production line central control system to realize linked optimization of refining parameters and papermaking processes.