工作原理Working principle：
料液中的部分溶剂在真空作用下汽化并不断排除，往复多次，料液里的溶剂不断被蒸发掉，浓度得以提高，直到浓缩到所需的比重后由出液(膏)口出液(膏)。
Part of the solvent in the material liquid is vaporized and continuously discharged under the action of vacuum. and after several repetitions, the solvent in the liquid is continuously evaporated and the concentration is increased until it is concentrated to the required specific proportion and then discharged from the liquid (paste) outlet.
产品优势Product advantages：
*WYZ普通型，用于水溶液的蒸发；
*WYZ general type equipment is used for evaporation of aqueous solution;
*WZYH酒精回收型，用于酒精溶液的蒸发，较大的冷凝冷却面积，确保酒精回收，回收浓度达到70%-85%,酒精损耗率＜5%,酒精回收后温度小于40℃；
*WZYH alcohol recovery type equipment is used for evaporation of alcohol solution. It has a large condensing and cooling area, ensuring alcohol recovery. The recovery concentration reaches 70%-85%, the alcohol loss rate is less than 5%. The temperature after alcohol recovery is less than 40℃.
*WZYS收膏型，用于单效蒸发和收浓膏，在单效正常蒸发后，关闭加热室与蒸发室连接喷管和循环管的阀门，将料液全部进入蒸发室，通过蒸发室的夹套直接加热， 进行减压浓缩，提高物料的浓缩比重至 1.35-1.45。
*WZYS paste collecting type equipment is used for single-effect evaporation and concentrated paste collection. After single-effect normal evaporation, valves of the nozzle and circulating pipe connecting the heating chamber and the evaporation chamber are closed. All material liquid comes into the evaporation chamber, and is heated directly the jacket of the evaporation chamber, and is concentrated under reduced pressure until the concentration proportion of the material is increased to 1.35-1.45.