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当前位置: 首页 > 新闻动态 > 行业新闻 介绍下关于低露点除湿机的七个作用
来源:安迪盛 时间:2018-10-04 点击量:
低露点除湿机能解决工程塑料的强度不足、透明度不佳、银条及水泡等现象。作为辅机设备,此款除湿干燥机广泛应用于塑料制品如板材、包装容器、纺织纤维等加工行业。对于吸湿性塑料、传统的热风干燥方式,仅能去除物料表面的水分和潮气,对除湿干燥机内部的水分无法驱除。 
低露点除湿干燥机的作用:  
1、低露点除湿机的空气管路都采用密闭循环系统,并装有过滤器,因此不受外界气候影响,以及可以防止粉尘在厂内造成污染,改善工作环境。  
2、可将塑料原料中的水份带走,以消除气泡的产生,使产品达到理想的机械性、电气性、尺寸稳定性与外观。  
3、防止不良品的产生与退货损失,降低废料的产生。因为除湿干燥机是利用非常干燥的空气来进行除湿工作,故可以缩短烘料时间,节省工时。  
4、低露点除湿干燥机的干燥时间是指原料成型前预干燥的时间,干燥时间太长会造成原料变质或结块或浪费能源,干燥时间太短会造成含水率过高的现象。例如:PC/3-4小时,ABS/3-4小时
5、风量是带走原料中水份的媒介,风量大小会影响除湿效果的好坏。风量太大会造成回风温度过高,造成过热现象(overheat)而影响露点的稳定性,风量太小则无法将原料中的水份完全带走,风量也是代表除湿干燥机的除湿能力。  
6、干燥温度是指进入干燥桶的空气温度,每一种原料因其物性,例如分子结构、比重、比热、含水率等因素,干燥时温度均有一定的限制,温度太高时会使原料中的部分添加物挥发变质或结块,太低又会使某些结晶性原料不能达到所需干燥条件,例如:PC/120℃,ABS/80~95℃。另外在干桶选择上需要绝缘保温,以避免干燥温度漏失,造成干燥温度不足或能源的浪费。7、低露点除湿机的露点温度是指当气体冷却到将含有的湿气凝结成水珠的温度,是一种计测气体干燥(潮湿)程度的单位。气体中的湿气愈少,露点温度就愈低。良好的除湿干燥机露点要能达到-40℃的露点温度。
低露点转轮除湿机.jpg
英文版:
Low dew point dehumidifier can solve the problems of insufficient strength, poor transparency, silver bar and blister of Engineering plastics. As an auxiliary equipment, this dehumidifier is widely used in plastic products such as sheet metal, packaging containers, textile fibers and other processing industries. For hygroscopic plastics and traditional hot air drying method, only the moisture and moisture on the surface of the material can be removed, and the moisture in the desiccant dryer can not be removed.
The function of low dew point dehumidifier dryer:
1. The air pipes of low dew point dehumidifier all adopt closed circulation system and equipped with filter, so it is not affected by external climate, and can prevent dust from polluting the factory and improve the working environment.
2. Moisture in plastic raw materials can be taken away to eliminate the ion of bubbles, so that the product to achieve the desired mechanical, electrical, dimensional stability and appearance.
3, to prevent the production of defective goods and return losses, reduce waste generation. Because the dehumidifier uses very dry air to dehumidify, it can shorten the drying time and save man-hour.
4. The drying time of low dew point desiccant dryer refers to the pre-drying time of raw materials before molding. If the drying time is too long, the raw materials will deteriorate or agglomerate or waste energy. If the drying time is too short, the water content will be too high. For example, PC/3-4 hours, ABS/3-4 hours.
5, air volume is the medium to take away the moisture in raw materials. The size of air will affect the dehumidification effect. Too much air will cause the return air temperature to be too high, causing overheat and affecting the stability of dew point. Too small air volume will not be able to completely remove moisture from raw materials. The air volume also represents the dehumidification capacity of the desiccant dryer.
6. Drying temperature refers to the air temperature entering the drying barrel. Because of the physical properties of each raw material, such as molecular structure, specific gravity, specific heat, moisture content and other factors, the drying temperature has certain limitations. When the temperature is too high, some additives in the raw material will volatilize or agglomerate, and too low, some crystalline raw materials will not be able to. To achieve the required drying conditions, such as PC/120 C, ABS/80 ~ 95 C. In addition, insulation and heat preservation are needed in the selection of drying barrels to avoid leakage of drying temperature, resulting in insufficient drying temperature or waste of energy. 7. Dew point temperature of low dew point dehumidifier refers to the temperature when the gas is cooled to condense the moisture contained into water droplets. It is a unit to measure the degree of dryness (humidity) of the gas. The less moisture in the gas, the lower the dew point temperature. Good dehumidifier dryer dew point should be able to reach the dew point temperature of -40 C.
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