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Vegetable Dryer Machine Manufacturer

    • 13 posts
    March 9, 2019 2:20 AM EST

    The Vegetable dryer machine manufacturer tells you that there are four factors that determine good drying efficiency: Drying Temperature, Residence Time, Air Flow, and Dew Point. These four factors are interlocking, and any change in conditions will affect the drying effect.

    Drying Temperature refers to the temperature of the air entering the drying drum. Each material has a certain temperature limit due to its physical properties such as molecular structure, specific gravity, specific heat, moisture content, etc. When the temperature is too high, the temperature is too high. Some of the additives in the raw materials will be volatilized or agglomerated, too low, and some crystalline raw materials will not reach the required drying conditions, such as: PC / 120 ° C, ABS / 80 ~ 95 ° C. In addition, insulation and insulation are required in the selection of dry barrels to avoid leakage of drying temperature, resulting in insufficient drying temperature or waste of energy.

    The residence time refers to the pre-drying time of the raw material. If the drying time is too long, the raw material 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.

    Air flow is the medium that takes away the moisture in the raw materials. The amount of air volume will affect the dehumidification effect. If the air volume is too large, the return air temperature will be too high, causing overheating and affecting the stability of the dew point. If the air volume is too small, the moisture in the raw material cannot be completely taken away. The air volume also represents the dehumidification capacity of the dehumidifying dryer.

    The Dew point is the temperature at which the gas is cooled to condense the moisture contained in the water droplets, and is a unit for measuring the degree of drying (wet) of the gas. The less moisture in the gas, the lower the dew point temperature. A good dehumidifying dryer should have a dew point of -40 ° C dew point.

    The use of the dehumidifying dryer can be divided into a single machine type and a centralized type, and the single type dehumidifying dryer usually includes a dryer main machine, a drying barrel, and a suction machine. The single-machine type is suitable for a small variety of drying, which has the advantages of good drying efficiency and convenient and quick refueling. The centralized dryer consists of a dryer mainframe and several drying drums. Each drying drum has an independent heating controller that can simultaneously dry several different raw materials and cooperate with the air volume regulating valve to control the air volume of each drying drum.