Spraying device

A spraying device comprising:

• a spraying mechanism and a rotating mechanism,
• wherein the rotating mechanism comprises a rotating sidewall with a plurality of sets of spraying holes arranged along a circumference of the rotating sidewall;
• each of the plurality of sets of spraying holes comprises a plurality of spraying holes, and the spraying holes of at least two adjacent sets of spraying holes are arranged in a staggered arrangement;
• wherein the spraying mechanism comprises an infusion channel, a sidewall of which is provided with a spraying spout;
• wherein the infusion channel extends along inside of the rotating sidewall, the rotating sidewall being configured to rotate or swing with respect to the spraying spout of the infusion channel;
• wherein the infusion channel is provided with a spraying member comprising a first opening, a second opening and a closed sidewall, the first opening connecting the spraying spout, the second opening facing the rotating sidewall;
• and
• wherein the spraying member has an elongated structure and has a fan-shaped cross-section in a direction perpendicular to a lengthwise direction of the infusion channel.