Fluid supplying device

A fluid supplying device, including:

• a reservoir, having an opening and a gas inlet, the opening being located at a top of the reservoir, the top of the reservoir further forming a relief hole;
• a cover, disposed on the opening of the reservoir and being hollow, a lateral side of the cover forming a fluid outlet;
• an outer tube, an end of the outer tube extending into the reservoir, an opposite end of the outer tube extending through the cover, the outer tube communicating with the fluid outlet;
• an inner tube, disposed in the outer tube, an end of the inner tube extending into the reservoir;
• a pressing rod, slidably disposed in the inner tube, an end of the pressing rod away from the reservoir extending outside the cover;
• a positioning handle, an end of the positioning handle being pivotably disposed on the top of the reservoir, the positioning handle being able to pivot between a first position and a second position, the positioning handle further forming a through hole;
• wherein when the positioning handle is located at the first position, an end of the positioning handle away from the reservoir abuts against the end of the pressing rod away from the reservoir so that the pressing rod is unable to move along the inner tube, the through hole is positionally deviated from the relief hole so that the relief hole does not communicate inside the reservoir and exterior therebetween;
• wherein when the positioning handle is located at the second position, the end of the positioning handle away from the reservoir is away from the pressing rod and does not abut against the pressing rod so that the pressing rod is able to move up and down, the through hole positionally corresponds to the relief hole so that the relief hole communicates with exterior via the through hole.