| Key points in the application of rotary flat drying machine |
| Hits：7 AddTime：2025-08-15 15:17:59 |
The rotary flattening dryer is widely used in industries such as textiles, printing and dyeing, leather, and non-woven fabrics. Its core function is to flatten, shape, and dry fabrics through a rotary tension system and hot air drying. The following are the key points in its application: 1. Equipment debugging and parameter setting Tension control: Adjust the rotational tension according to the fabric material (such as cotton, synthetic fiber, blended) to avoid being too tight (causing deformation) or too loose (affecting flatness). Elastic fabrics require lower tension. Temperature setting: The drying temperature is usually 80~150 ℃, which needs to be matched with the heat resistance of the fabric (such as polyester can withstand high temperatures, wool needs low temperatures). Uneven temperature can lead to incomplete drying or localized overheating. Speed matching: The drum speed is related to the thickness and water absorption of the fabric. Thick fabrics require low-speed extension of drying time, while thin fabrics can run at high speed. 2. Preparation before fabric treatment Moisture content control: Dehydration or rolling treatment is required before feeding to avoid excessive moisture content increasing energy consumption or causing uneven drying. Smooth feeding: Ensure that the fabric does not wrinkle into the drying area, otherwise permanent creases may occur. 3. Guarantee of drying uniformity Hot air circulation system: Regularly check the air ducts and nozzles to avoid blockages that may cause local temperature differences. Adopting a uniformly distributed nozzle design. Humidity monitoring: Install online humidity sensors to adjust drying parameters in real-time, preventing excessive drying (fiber brittleness) or insufficient drying (residual moisture). 4. Energy consumption and efficiency optimization Waste heat recovery: utilizing exhaust waste heat to preheat fresh air, reducing energy consumption (can save 15-30% energy). Staged drying: High temperature fast drying is used in high humidity areas, followed by low-temperature slow drying in later stages, balancing efficiency and quality. 5. Maintenance and safety Cleaning and maintenance: Clean the fiber fluff and dye residue in the drum and air duct daily to prevent blockage and fire hazards. Bearing and transmission inspection: Regularly lubricate rotating components to avoid tension fluctuations caused by mechanical failures. Fire prevention measures: equipped with high temperature alarm and automatic fire extinguishing devices, especially when handling flammable fabrics. 6. Special material handling Sensitive fabrics: Temperature sensitive materials (such as spandex) require gradient heating or low-temperature slow drying. Coating/composite fabric: To avoid high temperature damage to the coating, it is necessary to first test and determine the process window. 7. Automation and Intelligent Control PLC system: Integrated closed-loop control of tension, temperature, and speed to reduce human error. Data recording: Save historical process parameters for quality traceability and optimization. Common Problems and Countermeasures Wrinkles: Check if the guide rollers are parallel and adjust the feeding tension. Color difference: Ensure even distribution of hot air and avoid local temperature deviation. Static electricity: Add static eliminators (especially synthetic fibers) after drying. By precise control of process parameters, regular maintenance, and intelligent upgrades, the rotary flat drying machine can significantly improve production efficiency and product quality, while reducing energy consumption. Different industries need to flexibly adjust their plans based on material characteristics. |
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