Patent ID: 10913038

Abstract:
Disclosed is a bottom-up liquid filling system, comprising an upper body and a lower body. The upper body comprises a fixed member and a lifting member with a filling passage channel in the middle, wherein the fixed member is fixedly arranged on an inner bottom face of the upper body, the lifting member is arranged inside the fixed member and is movable up and down, a passage hole is arranged in a side wall of the lifting member, and the filling passage channel passes through the bottom of the upper body. The lower body comprises a capping plug, a rigid cylinder, an outer retractable tube and an inner retractable tube, wherein the outer retractable tube is internally provided with a spring, the rigid cylinder is arranged on a top plate and is provided with a channel, the inner retractable tube is arranged inside the outer retractable tube and is in communication with the rigid cylinder, a support cylinder is arranged on a bottom plate, the support cylinder passes through the inner retractable tube and extends into the rigid cylinder, the capping plug connected to the top of the rigid cylinder is fixedly arranged at the top of the support cylinder, and an outer side wall of the capping plug is snap-fitted with an inner side wall of the top of the lifting member. The present invention has the advantages of being less prone to leakage and spilling, having low costs and reducing the chance of scalding.