During compound film pressing and glue water tray lifting, manual handle adjustment is taken to make it easy and convenient.

The structure of the multilayer sprinkling tray distributors for the large-type vertical tube -type falling - film evaporator is introduced in this paper.

Based on the result of spray tray deaerator research, the netted film type deaerator was designed by analyzing heat and mass transfer characteristics of deaerator, and experimental research was done.