Liquid waste disposal

Abstract

A liquid waste disposal unit for use in a hospital to handle potentially contaminated waste materials or the like is disclosed. The disposal unit has a funnel shaped wet bottom chamber connected to a trap section. A rinse means for a container extends up inside it and a vent is provided for removing airborne odors, aerosols, fumes and air. The chamber may be connected to a grinder located between the chamber and a trap. The trap may discharge into a centralized treatment tank. An unobstructed connection is provided between the chamber and the trap and an integral outlet fitting is connected to the chamber between the trap and the chamber for connecting to a building waste line. A foot lever controlled door is hinged to the top of the chamber. A "spin" type nozzle and a flushing mechanism are interconnected with the door and provides a gentle flush when the door is opened. Rim nozzles are arranged so that water encircles the inside of the bowl in a spiral path toward the bottom. The air enters the chamber as the liquid waste is poured into the chamber and is withdrawn with negative pressure by venturi action created by the water entering the chamber. A vertical pipe with a "T" bar and with an aerator-type nozzle is supported in the chamber for rinsing the liquid waste from a container, such a container may be supported on the neck of the vertical pipe, resting on the "T" bar fixed to the pipe. Means is provided for automatically increasing the volume of water for stronger flushing action when the door is closed for a specific time. A short time after the start of flush, the water actuates a spin-type nozzle in the door which ejects hot water and chemicals to clean the chamber and door interior for a time cycle valve means control.

Dependencies are inferred from the claim text.