Continuous microwave freeze-drying device

摘要

A continuous microwave freeze-drying device comprises a vacuum water-trapping system (1), a microwave shield plate (2), a microwave bin (6) and a freeze-drying bin (5) located in the microwave bin (6), wherein the freeze-drying bin (5) comprises an upper bin opening, a left bin wall, a right bin wall and a bottom bin wall, and the left, right and bottom bin walls are all made from nonmetal wave transmitting materials, such as polyfluortetraethylene, polyethylene, polypropylene or quartz glass. The device solves the technical problem of freeze-drying failure caused by glow discharge of microwave under freeze-drying environment.

主权项

1. A continuous microwave freeze-drying device, comprising:
a freeze-drying bin, a microwave shield plate, a vacuum water-trapping chamber, a microwave bin, and a material conveying belt, wherein the freeze-drying bin resides inside the microwave bin and is separated from the vacuum water-trapping chamber by the microwave shield plate, wherein the freeze-drying bin comprises a left bin wall, a right bin wall and a bottom bin wall, and the left, right and bottom bin walls are made from nonmetal and gas-impermeable microwave transmitting materials, wherein the microwave shield plate is a metal plate having a plurality of ventilation holes, wherein the ventilation holes allow water vapor to transfer from the freeze-drying bin to the vacuum-water trapping chamber, and wherein the material conveying belt passes through the freeze-drying bin, wherein an internal space volume of the freeze-drying bin accounts for 30%-65% of an external volume of the freeze-drying bin.