SED-30WB-K — Microwave Vacuum Drying Machine

Lowering pressure inside the chamber reduces the boiling point of water and accelerates molecular diffusion, so vacuum drying provides low-temperature, fast drying. Conventional vacuum drying relies on thermal conduction (slow, hard to control); microwave heating bypasses this by penetrating the load and converting electromagnetic energy directly into heat via dielectric loss — a 2–10× efficiency improvement. Equipment comprises: microwave source (CK-619 magnetron with power supply and control protection), microwave waveguide transmission system (BJ-22 waveguide + T-junctions + square-to-round transition), and a vacuum chamber. A standard vacuum pump evacuates the working chamber. Slanted microwave feed achieves even power-density distribution. PLC + touch-screen automatic control with manual override; operator sets microwave output power, material temperature, humidity, vacuum, and material speed online.