Purification device for air purification and air purifier having same

An air purifier comprising a purification device for purifying air, wherein the purification device for purifying air comprises:

• a housing provided with an air inlet and an air outlet, wherein a cavity communicating with the air inlet and the air outlet is defined in the housing;
• at least one purifying assembly rotatably arranged in the cavity and located between the air inlet and the air outlet, wherein a respective purifying assembly of the at least one purifying assembly comprises a first rotary cylinder and a first rotary disk, the first rotary cylinder is spaced apart from a side wall of the housing, a side wall of the first rotary cylinder is provided with a first mesh in a circumferential direction of the side wall of the first rotary cylinder, the first rotary disk is connected downstream of the first rotary cylinder, and a portion of the first rotary disk, which is located between the first rotary cylinder and the housing in a radial direction, is provided with a second mesh;
• a water inlet pipe comprising a water inflow end and a water discharge end, the water discharge end being provided with a plurality of circumferentially distributed water injection nozzles, and the water discharge end extending into the first rotary cylinder;
• and
• a fan assembly comprising a fan and a motor, the fan being arranged downstream of the purifying assembly to drive air to flow from the air inlet to the air outlet via the purifying assembly, and the motor being configured to drive the purifying assembly and the fan into rotation.