Floating ball structure and humidifier

A floating ball structure for opening or closing a valve of a humidifier, comprising:

• a floating ball body, a floating ball stem, a first insert, and a second insert, wherein the floating ball body is connected to the floating ball stem,
• wherein the floating ball stem is provided with a receiving cavity, the floating ball stem is further provided with a first through-hole, a second through-hole, and a third through-hole, and the receiving cavity is in communication with an outside of the floating ball stem through each of the first through-hole, the second through-hole, and the third through-hole,
• wherein a part of the first insert is disposed in the receiving cavity and has an outside diameter greater than an outside diameter of the first through-hole, an other part of the first insert extends through the first through-hole and protrudes from the floating ball stem, a part of the second insert is disposed in the receiving cavity and has an outside diameter greater than an outside diameter of the second through-hole, an other part of the second insert extends through the second through-hole and protrudes from the floating ball stem, and at least one of the first insert or the second insert is configured to slide relative to the floating ball stem in a first direction, and
• wherein at least one of the first insert or the second insert has a drive block, the drive block extends through the third through-hole and protrudes from the floating ball stem, and the drive block is configured to drive the first insert or the second insert to move in the first direction.