초록 ▼

An airlift pump apparatus and method is based on the practice of injecting air intermittently into a vertical riser tube at a location above a bottom open end of the riser tube which is submerged in the liquid to be pumped. The intermittently injected air is used to create intermittent airlifts with

An airlift pump apparatus and method is based on the practice of injecting air intermittently into a vertical riser tube at a location above a bottom open end of the riser tube which is submerged in the liquid to be pumped. The intermittently injected air is used to create intermittent airlifts within the tube and cause aerated liquid to be discharged intermittently from an output port of the tube.

대표청구항 ▼

[ What is claimed is:] [8.] An airlift pump apparatus for intermittent removal of liquid from a reservoir of liquid forming part of a liquid collection and reservoir system, comprising:a) a riser tube having an intake port submerged in said reservoir of liquid and an output port located outside of t

[ What is claimed is:] [8.] An airlift pump apparatus for intermittent removal of liquid from a reservoir of liquid forming part of a liquid collection and reservoir system, comprising:a) a riser tube having an intake port submerged in said reservoir of liquid and an output port located outside of the liquid in said reservoir;b) said riser tube further having a laterally disposed branch tube with an upwardly facing intake port of said branch tube residing within said reservoir at a level between said intake port of said riser tube and the surface of said liquid;c) an air tank having a closed upper end and an opening that is lower than said intake port of said branch tube and being mounted in said vessel in a manner to enclose said laterally disposed branch tube; andd) an air source connected to supply pressurized air to said air tank.