US 5,257,466 A · Raw sewage disposal apparatus

Abstract

A raw sewage disposal apparatus, such as a portable toilet. The apparatus has a vessel with a first introduction pipe for feeding raw sewage into the vessel. The vessel is externally heated and contains heat-holding bodies and an agitator so that the sewage can be heated to evaporate liquid therefrom while being agitated to break down nonevaporable substances into powder. Air is circulated through the vessel to remove the vapor and later the powder therefrom. A deodorizing means including a catalyst, and a preheater for preheating the catalyst, are provided to treat the vapor to make it substantially odorless. A dust collector is provided to collect the powder. The dust collector can be heated, if necessary, to evaporate liquid present therein. A liquid level detector can be provided on the vessel to indicate when the vessel contains a large amount of raw sewage.

Claims25

Dependent claims

A raw sewage disposal apparatus comprising:

a heat-resistant vessel for containing raw sewage therein;
a first introduction pipe connected for feeding raw sewage into said vessel;
heating means for heating and drying the raw sewage in said vessel;
stirring means disposed in said vessel, said stirring means having a plurality of stirring blades for stirring the raw sewage;
a multitude of heat-holding bodies contained in said vessel;
a nozzle through which a jet of air is injected into said vessel;
dust collection means for separating and collecting dust from dust-laden air discharged from said vessel;
deodorizing means communicating with said dust collection means for receiving air therefrom, said deodorizing means comprising a catalyst for treating the air for removing the bad smell from the air, and a secondary heating means for heating said catalyst;
and
a second introduction pipe connected to said deodorizing means for supplying fresh air thereto.

7 more elements

A raw sewage disposal apparatus adapted to be connected to a stool, comprising:

a heat-resistant vessel for containing raw sewage therein;
an introduction pipe connectible at one end to the stool and connected at the other end to said vessel for introducing raw sewage into said vessel;
valve means in said introduction pipe;
heating means for heating and drying the raw sewage vessel;
stirring means disposed in said vessel, said stirring means having a plurality of stirring blades for stirring the raw sewage;
a multitude of heat-holding bodies contained in said vessel;
a nozzle through which a jet of air is injected into said vessel;
dust collection means disposed alongside said vessel for separating and collecting the dust from dust-laden air discharged from said vessel;
deodorizing means having a catalyst therein for treating the air to remove the bad smell from the air;
first auxiliary heating means connected to said deodorizing means and second auxiliary heating means connected to said dust collection means;
a fresh air introduction pipe connected to said first auxiliary heating means;
and
an air-drawing means connected to said deodorizing means for drawing the air through said deodorizing means.

10 more elements

A raw sewage disposal apparatus adapted to be connected to a stool, comprising:

a heat-resistant vessel for containing raw sewage therein;
an introduction pipe connectible at one end to the stool and connected at the other end to said vessel for introducing the raw sewage in said vessel;
valve means provided in said introduction pipe;
heating means for heating and drying the raw sewage in said vessel;
stirring means disposed in said vessel, said stirring means having a plurality of stirring blades for stirring the raw sewage;
a multitude of heat-holding bodies contained in said vessel;
a nozzle through which a jet of air is injected into said vessel;
dust collection means disposed alongside the vessel for separating and collecting the dust from the dust-laden air discharged from said vessel;
deodorizing means having therein a catalyst for treating the air to remove the bad smell from the air;
first auxiliary heating means connected to said deodorizing means and second auxiliary heating means connected to said dust collection means;
a fresh air introduction pipe connected to said first auxiliary heating means;
an air-drawing means connected to said deodorizing means for drawing air through said deodorizing means;
a liquid level detecting means provided on the peripheral surface of said vessel;
and
a temperature sensor provided on the peripheral surface of said vessel.

12 more elements

A raw sewage disposal apparatus adapted to be connected to a stool, comprising:

a heat-resistant vessel for containing raw sewage therein;
an introduction pipe connectible at one end thereof to the stool and connected at the other end thereof to said vessel for introducing the raw sewage into said vessel;
valve means provided in said introduction pipe;
heating means for heating and drying the raw sewage;
stirring means disposed in said vessel, said stirring means having a plurality of stirring blades for stirring the raw sewage;
a multitude of heat-holding bodies contained in said vessel;
a nozzle through which a jet of air is injected into said vessel;
dust collection means disposed alongside said vessel for separating and collecting the dust from the dust-laden air discharged from said vessel;
deodorizing means communicating with said dust collection means and having therein a catalyst for treating the air to remove the bad smell from the air;
a secondary heating means connected at one end thereof to said air introduction pipe and connected at the other end thereof to said deodorizing means;
and
an air-drawing means connected to said deodorizing means for drawing the air through the deodorizing means.

9 more elements

Dependencies are inferred from the claim text.

Raw sewage disposal apparatus

Life of this patent

Raw sewage disposal apparatus

Life of this patent

Abstract

Claims25