Thin film evaporator is usually a device used in conjunction with Wuxi Guanya Refrigeration Heating Dynamic Temperature Control System. When using a thin film evaporator, users need to have a clear understanding of its internal structure in order to operate it better.

The rotating scraper thin film evaporator is a new type of evaporator that uses a rotating scraper to force film formation and can perform falling film evaporation under vacuum conditions. It has a high heat transfer coefficient, high evaporation intensity, short overcurrent time, and great operational flexibility, making it particularly suitable for evaporation concentration, degassing and desolvation, and distillation purification of heat sensitive materials, high viscosity materials, and materials that are prone to crystallization and contain particles. Therefore, it has been widely used in industries such as chemical, petrochemical, pharmaceutical, pesticide, daily chemical, food, and fine chemical.

The rotational speed of the motor and reducer rotor of the thin film evaporator will depend on the form of the scraper The viscosity of the material and the inner diameter of the evaporator barrel; Choosing the appropriate linear speed of the scraper is one of the important parameters to ensure the stable and reliable operation of the evaporator and satisfactory evaporation effect. The materials enter the evaporator tangentially from the inlet at the lower end of the separation cylinder body, and are continuously and evenly distributed on the inner wall of the evaporation cylinder body through the distributor installed in the separation cylinder body. The secondary steam evaporated from the evaporation cylinder body rises to the separation cylinder, and is separated from the liquid drops or foam that may be carried by the secondary steam through the gas-liquid separator installed inside. The secondary steam is led out of the evaporator from the outlet at the upper end.

The rotary vane gas-liquid separator of the film evaporator is installed above the separating cylinder, which traps the liquid drops or foam that may be carried by the rising secondary steam and makes it fall back to the evaporation surface. The evaporator body, also known as the heating cylinder body, is the evaporation surface where the material that is forced to form a film by the rotating scraper exchanges heat with the heating medium inside the jacket. The inner diameter and length of the evaporator body are determined by the evaporation area and the appropriate aspect ratio. The rotor installed inside the evaporator cylinder is composed of a shaft and a rotating frame. The rotor is driven by a motor and a reducer, and drives the scraper to make circular motion. The rotating frame is made of stainless steel precision castings, ensuring its strength, geometric dimensions, stability, and other aspects are effectively guaranteed.

The internal structure of the thin film evaporator is shown above. It is recommended that users have a clear understanding of the thin film evaporator before operating it.