초록 ▼

An integrally molded plastic sump basin formed with two distinct portions including a constant depth, shallow dry well at the top defining a controls area that is isolated from a varying depth wet well below, said wet well defining a pump chamber. All electronic controls, level sensor controls and v

An integrally molded plastic sump basin formed with two distinct portions including a constant depth, shallow dry well at the top defining a controls area that is isolated from a varying depth wet well below, said wet well defining a pump chamber. All electronic controls, level sensor controls and valve extension control are situated in the non-hazardous dry well while pump(s) and associated piping are contained within the potentially hazardous wet well part of the basin. The sump basin may be formed with a drop inlet opening for sewage entry that enhances installation flexibility and provides more efficient processing of sewage entering the basin.

대표청구항 ▼

[ What is claimed is:] [1.] A sewage grinder pump basin assembly comprising:a molded plastic sewage sump, said sump being an integrally molded basin having a dry well area and a wet well area below the dry well and separated from it by a floor in the dry well, said floor having an opening over which

[ What is claimed is:] [1.] A sewage grinder pump basin assembly comprising:a molded plastic sewage sump, said sump being an integrally molded basin having a dry well area and a wet well area below the dry well and separated from it by a floor in the dry well, said floor having an opening over which a lid is removably seated, a grinder pump located in the wet well area for grinding sewage and pumping it out through a discharge pipe, and a lid removably attached to the sump covering the dry well area,said molded plastic sump further comprising a drop inlet molded into the wet well area of the sump as an outward projection of a side wall of the wet well, said drop inlet comprising a substantially horizontal outward projection from a side wall of the sump, said horizontal projection having an inlet opening provided for sewage inlet from above, said drop inlet further comprising a bottom wall shaped for directing inlet sewage dropped through the inlet opening directly to the grinder pump in the bottom of the wet well, said molded drop inlet being connectible from directions ranging to over 180.degree. with respect to the drop inlet opening.