Patent attributes
An eco-friendly pumping device includes a press pumping unit, a bottle, and a replaceable soft bag disposed in the bottle. An opening part of the replaceable soft bag is directly connected to the press pumping unit. The interior of the replaceable soft bag forms a closed space and a negative pressure state simultaneously when operating the press pumping unit because of vacuum effect. A shape and an inner volume of the flexible bag body are squeezed automatically by external air pressure outside because of vacuum effect as the time of use and amount of use increase. The replaceable soft bag can be directly wedged to the press pumping unit to replace an empty one, so that the fluid material in the replaceable soft bag does not need to be poured and transferred into the bottle, and the fluid material does not contact with hands.
