Patent Application
20120031855
The present invention relates to a method and a device for treatment of human excrement by collecting and dehydrating the excrement as expelled from human body and more particularly to a method and a device for treatment of human excrement through collection and dehydration of primary excrement as expelled from human body without polluting the environment.
In many areas where waterborne system is not available, people usually collect excrement in a container as it is expelled from the human body. The excrement is usually piled up with straw for undergoing anaerobic degradation. Such a heap sends forth a foul smell which pollutes the environment.
There are also a number of previously known biological toilets to improve the above situation. However, these biological toilets are not satisfying in terms of dehydration efficiency and maintenance point of view because excrement stains the passageway causing unpleasant feeling to next user and excrement forms a high pile getting difficult to be dehydrated particularly in the center portion and new excrement hinders dehydration process. The present invention is a need for an improved method and a device to overcome the shortcomings of the prior art.
It is an aim of present invention to provide a method for treatment of human excrement by collecting and dehydrating the excrement expelled from human body.
Another aim of present invention is to provide a device for treatment of human excrement by collecting and dehydrating the excrement expelled from human body.
To achieve the aforementioned aims, one aspect of the present invention provides a method for treatment of human excrement, said method comprises step of providing a chamber having a top opening through which excrement enters the chamber;
The method also comprises the step of allowing the excrement to form a layer inside the chamber by setting up a storing porous plate crossing the whole length and whole width of an upper half of the interior of the chamber, wherein the upper part of said plate features to have a protrusion in the form of an equilateral-triangular base pyramid topped vertically under the centre of the outlet of the top opening and the lower side of equilateral-triangular base intersected perpendicularly to the central line of plate, and the plate further slopes downwardly and then horizontally away from top opening in the form of a series of corrugations whereby the excrement moves down the pyramid and the slope and then across the plate by gravity;
The method further comprises the step of allowing liquid urine to fall down into the urine storing region of the chamber through perforations in the porous plate;
The method also further comprises the step of setting up two solid excrement storing regions namely a front storing region located under the top opening and a rear storing region located away from the top opening, and the regions are separated by mounting a vertical baffle on top of said corrugated plate, whereby solid excrement is stored firstly at the front storing region and secondly at the rear storing region;
The method still further comprises the step of dehydrating the solid excrement by ventilating the chamber interior by means of a ventilation system located at the top ceiling region of the front storing region which draws air in through the end wall of the rear storing region, down through the porous plate into the urine storing region and backup through the porous plate before exiting out through the ventilation system;
The method further another comprises step of providing an indirect heat source inside chamber wherein heat penetrates the solid excrement layers without touching.
Another aspect of the present invention provides a device for treatment of human excrement comprising the step of providing a chamber having a top opening through which excrement enters chamber;
According to one embodiment of the present invention, said top opening is WO defined by a bowl having an upwardly-tapered interior wherein the top entrance inner circumference is smaller than the interior circumference and said bowl is provided therein with an inclined inner trough and a vertical inner trough opposed to the inclined inner trough both are extending downwardly, thereby forming a tunnel having an outlet and providing a vertical passageway penetrating into the chamber interior to minimize visibility. Each of the inner surfaces of the troughs is covered with a coating that improves the sliding of excrement. The inclined trough has a bottom end centered vertically to a central point of the top entrance of the bowl;
According to another embodiment of the present invention, said top opening is defined by a squat pan having an oblong interior, and the squat pan is provided therein with an inclined inner trough and a vertical inner trough opposed to the inclined inner trough both are extending downwardly, thereby forming a tunnel having an outlet and providing a vertical passageway penetrating into the chamber interior to minimize visibility. Each of the inner surfaces of the troughs is covered with a coating that improves the sliding of the excrement. The inclined trough also has a bottom end centered vertically to a central point of the top entrance of the squat pan;
The device comprises a storing porous plate mounted crossing the whole width and whole length of an upper half of the interior of the chamber wherein the upper part of the plate features to have a protrusion in the form of an equilateral-triangular base pyramid topped vertically under the centre of the outlet of the top opening and the lower side of equilateral-triangular base intersected perpendicularly to the central line of the plate, and the plate further slopes downwardly and then extends horizontally away from the top opening in the form of a series of corrugations whereby the excrement moves down the pyramid and the slope and then across the porous plate by gravity, whereas the liquid urine falls down into the urine storing region of the chamber through perforations in the porous plate;
The device further comprises two solid excrement storing regions namely a front storing region located under the top opening and a rear storing region located away from said top opening, each region separated by a vertical baffle on top of said corrugated plate, whereby the solid excrement is stored firstly at the front storing region and secondly at the rear storing region;
The device still further comprises a means of dehydrating the solid excrement layers by ventilating the chamber interior by means of a ventilation system located at the top ceiling region of front storing region which draws air in through the end wall of rear storing region, down through the porous plate into the urine storing region and backup through the porous plate before exiting out through the ventilation system;
The device further another comprises a means of providing an indirect heat source inside the chamber wherein heat penetrates solid excrement without touching;
The invention will now be described in detail, by way of example, with reference to the drawings.
Alternatively, a squat pan (1a) of
As shown in
Although embodiments together with structures and functions of present invention have been described in detail, many modifications and variations may be made from the teachings disclosed hereinabove. Therefore, it should be understood by those skilled in the art that any modification and variation equivalent to the scope of present invention should be regarded to fall within the scope of the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 0908640.6 | May 2009 | GB | national |
This application is a National Stage entry under 35 U.S.C. 371 of PCT/CN2010/071204 filed on Mar. 23, 2010, which claims priority to British Application No. GB0908640.6 filed on May 20, 2009. The entire contents of each of the above-applications are incorporated herein by reference.
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/CN10/71204 | 3/23/2010 | WO | 00 | 10/10/2011 |
