冷却塔故障会直接破坏印刷机的温控稳定性，进而引发一系列连锁印刷质量问题，结合你之前关注的印刷车间温控相关内容，具体影响如下：
一、水温过高类故障引发的质量问题
- 套印精度失效：冷却能力不足会让印刷滚筒、纸张/薄膜基材Temperature异常升高，引发材料受热伸缩变形，直接导致多色套印不准，图文错位偏差超出允许范围。
- 油墨固化异常：冷却失效会使油墨干燥速度失控，出现油墨干燥不彻底、背面粘脏、收卷粘连等问题，软包装印刷中膜卷内部热量积聚后，还会出现油墨软化粘连的情况。
- 墨色均匀性失控：墨辊Temperature随设备整体温升升高，油墨流变性被破坏，出现墨色不实、色差大、墨杠等印刷瑕疵，严重时还会出现“剥皮”现象。
- 印版性能受损：LED晒版烘版一体机配套冷却失效后，内部Temperature持续超标，印版感光材料过度固化，出现印版干裂、涂层脱落、柔性版变形等问题，直接导致后续印刷图文模糊。
二、其他冷却塔故障引发的质量问题
- 冷凝类质量缺陷：冷却塔温控失衡导致冷却介质Temperature过低，在南方梅雨季高湿环境下，印刷机金属部件、薄膜基材表面极易出现冷凝现象，引发油墨附着力下降、水纹等印刷瑕疵。
- 设备振动引发瑕疵：冷却塔Fan故障、部件松动产生的异常振动，会通过地面传导至印刷机，破坏印刷滚筒的运行平稳性，引发周期性墨杠、网点变形等质量问题。
- 润版系统连锁故障：冷却塔散热失效会导致印刷机润版系统的冷凝器无法正常工作，触发高压保护停止制冷，润版液Temperature超出13℃后，润版效果大幅下降，印品容易出现上脏、浮色等问题。
Written by: Zhongliang Yiji Technical Department · 15 Years of Cooling Tower Selection Experience | Last Updated：2026-10-15
FAQ
How to choose between a closed-circuit and an open cooling tower?
For working conditions that demand clean water (such as vacuum furnaces, high-frequency furnaces, and injection machine hydraulic oil cooling), a closed-circuit tower is preferred: the cooled medium circulates inside the coil without direct contact with air, so it resists scaling, algae and particle contamination, with stable heat transfer and low maintenance. For ordinary recirculating water scenarios with tight water budgets or cost sensitivity, an open tower costs less upfront but requires supporting water treatment.
What are the footprint and connections of a 100 t closed-circuit cooling tower?
Taking a standard 100 m3/h closed-circuit tower as an example: overall dimensions are approximately 3500 x 1500 x 2800 mm with a footprint of about 5.25 m2; inlet and outlet piping is typically DN100, with a 5-10 C temperature drop under standard conditions. Refer to the product specification table for details; non-standard dimensions can be customised on site.
How do I size the pump and head for a cooling tower?
Pump flow is selected according to the rated circulating water volume of the cooling tower; head must account for pipeline friction losses, local resistance, equipment elevation difference and the necessary margin. Pressure-bearing equipment such as injection machines also requires reserve for the working pressure. It is recommended to hand the operating data (flow, temperature difference, installation height, pipe diameter and length) to technical staff for calculation, to avoid an undersized pump or excessive head that wastes energy.
What water treatment does a closed-circuit cooling tower need?
The outer circulating water of a closed-circuit tower still contacts air, so softened make-up water, periodic corrosion and scale inhibitor dosing, and control of the concentration ratio are recommended. The inner circulating medium should be softened water, antifreeze or pure water according to process requirements; outdoor installation in winter requires freeze protection (electric tracing or draining).
