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US 4,633,535 AGranted
Apparatus for treating biological waste by means of composting
OwnerJarmo Louvoinventor
Life of this patent
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OwnerJarmo Louvoinventor
Estimating the term…
Apparatus for treating waste, particularly household waste, by means of composting. The waste is collected in a generally known fashion into the collecting bowl (1), wherefrom they are immediately moved on the spiral conveyor (21) into the mixing drum (5), which is set into rotating motion by means of the actuator (12). Inside the mixing drum (5) there is arranged an amount of such medium substance which is formed of separate plastic or steel bullets, onto the surface whereof the waste sticks during mixing. In connection to the mixing drum (5) there is arranged the discharge space (9), which is provided with separator means (10) for separating the composted waste or soil. The compost soil is continuously moved out of the discharge space (9) and further into a bag or the equivalent. A partial feedback of the soil is arranged from the discharge space (9) back into the collecting bowl.
A dry latrine for treating biological household waste by means of composting, which latrine comprises a space (1) for collecting the waste, the bottom of which space is formed as a trough (2), into which trough is fitted a conveyor (21), and at the end of said trough there is located an opening (4), through which the waste is moved out of the trough into a separate space where the composting takes place, characterized in that the separate space is formed of a mixing drum (5), which is placed in horizontal position and at the first end (52) whereof there is located an inlet opening (7), and that on an inner wall (51) of the mixing drum (5) there are attached mixer means (6), and that the mixing drum (5) is connected to an actuator (12) whereby the mixing drum (5) is rotated around its axis, and that there is an outlet opening (8) at the other end (53) of the mixing drum (5).
A dry latrine for treating biological waste comprising a collecting bowl defining a collecting space and having a trough at the bottom of said collecting space and an opening, a first conveyor movable in said trough for conveying waste from said collecting space through said opening, a mixing drum mounted for rotation about a horizontal axis and having an inlet opening communicating with said opening of said trough for receiving waste from said collecting space, mixer means connected in said mixing drum for mixing waste with a medium substance in said drum with rotation of said drum, said drum having an outlet opening therein on an opposite side thereof from said inlet opening, means defining a discharge space in said mixing drum communicating with said outlet opening, separator sieve means over said discharge space in said drum for receiving a composition of waste mixed with medium substance in said drum which is dropped on said sieve means with rotation of said drum for separating waste which falls into said discharge space from medium substance which falls off of said sieve means back into said drum, a second conveyor movable in said discharge space for moving separated waste to said outlet opening, and drive means connected to said drum and said first and second conveyors for rotating said drum and for moving said first and second conveyors.
A dry latrine according to claim 16, wherein said first and second conveyors comprise a single shaft rotatably mounted with respect to said collecting bowl and extending through said trough, through said drum and through said discharge space, a first screw conveyor portion on said shaft in said trough and extending through said inlet opening and a second screw conveyor portion on said shaft extending in said discharge space, said first and second screw conveyor portions being spaced from each other.
Dependencies are inferred from the claim text.