Gas-liquid dissolving apparatus

A gas-liquid dissolving apparatus, comprising:

• a sealed tank, provided with a liquid-supply joint at top, and a gas inlet joint and an output joint at bottom;
• a gas jet tube, located inside the sealed tank, with a top end closed and a bottom portion connected to the gas inlet joint;
• the gas jet tube having a plurality of gas jet holes distributed on a tube wall;
• and
• a plurality of plates, stacked around a periphery of the gas jet tube and fixed;
• each plate having a ring shape, and being structured with an inner ring wall, a mixing chamber and an outer ring wall sequentially from a center;
• the mixing chamber having an opening facing downward, and the inner ring wall being thicker than the outer ring wall, so that a gap exists between the outer ring walls of two adjacent stacked plates;
• the inner ring wall being axially provided with at least an axial passage, and provided at different radial positions with at least a radial passage and at least a gas passage respectively;
• the radial passage communicating with the axial passage and the mixing chamber;
• the gas passage corresponding to the plurality of gas jet holes and communicating with the mixing chamber.