JPS6322880B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for extracting methane gas from human waste.

Collecting methane gas from human urine has traditionally been
This is done on a small scale at pig farms, etc., and it is said that 1 kg of livestock manure produces 1 ^m3 of methane gas. However, the above-mentioned collection method merely takes out the raw gas that is naturally present in the storage tank and uses it as part of the lighting or heat source, which is insufficient for practical use.

In contrast, this invention automatically stores methane gas generated from human waste in a cylinder as a compressed gas of several atmospheres, and uses this cylinder to efficiently utilize it in the same way as normal fuel gas. The device is sufficiently safe against compression processing, and the entire device is miniaturized so that it can be easily installed in each home.

An embodiment of this invention will be explained with reference to the drawings.
The discharge pipe connected to the water-saving toilet bowl 1 is a storage pipe 3 of considerable height with an auxiliary tank 2 interposed in the middle and whose lower end is closed.
It is connected to the lower part of the fuel tank 5 through a branch pipe 4 provided near the lower end.

The tank 5 is made as a closed container with a bleed pipe 6 near the top that is activated when the inside reaches a certain pressure, and a discharge pipe 7 at the bottom that is opened after a certain period of time. It is equipped with a device 8 and has stirring blades 9 inside.

The bleed pipe 6 is connected to a compressor 11 via a deodorizing tower 10, and the compressed gas is stored in a methane gas cylinder 12. This methane gas cylinder 12 has valves 1 at both ends.
3 and 13, one end is formed as a pressure inlet 14 and the other end is formed as an outlet 15, and can be freely removed via detachment valves 16 and 16. 17 is compressor 1
At the same time, the stirring blade 9 is also rotated intermittently. 1
8 is a pressure-responsive switch, which closes the circuit of the motor 17 when the methane gas pressure in the tank 5 reaches a certain level.

Reference numeral 19 denotes a heated water discharge pipe and deodorizing pipe, to which a passage 20 leading to the upper end side of the auxiliary tank 2 and a riser pipe 21 from the heating device 8 are connected to the side, and the lower end opens to a sewer. . In addition, 22,2 in the figure
3 and 24 are discharge valves, moisture discharge valves, and residue discharge valves provided in the storage pipe and discharge pipe 7 in case of failure of the tank; 25 is a combustion burner; 26 is a power supply box;
7 is a ventilation tube. It goes without saying that a valve may be attached to a branch part of the pipe 4, etc., if necessary.

In this invention, with the above configuration, the human waste is stored in the storage tube 3.
The methane tank 5 enters from the inside and is heated and stirred to grow anaerobic bacteria that promote the generation of methane gas. Due to the pressure of the methane gas thus generated, the water level in the main tank 5 is lower than the water level in the auxiliary tank 2. When this pressure reaches a certain level, the pressure responsive switch 18 is activated and the compressor 1
1 is rotated, and the methane gas is compressed and stored under pressure in the methane gas cylinder 12. The human waste in the tank 5 is removed by a water discharge valve 23 and a residue discharge valve 24.
Open it from time to time to keep it at a constant level.
In this case, if the amount of methane gas in the tank 5 increases abnormally for some reason, the internal pressure will cause the human waste to push up the water level in the auxiliary tank 2 connected to the storage pipe 3 and pass through the passage 20, which also doubles as a heated water discharge pipe. It enters the deodorizing pipe 19 and is discharged into the sewer.

As explained above, this invention has a simple structure that can be installed in each home, is efficient because its operation is automated, and the water used for the heating device 8 uses drained water from a bath. This can be heated by the combustion burner 25 using part of the methane gas from the methane gas cylinder 12, which is significant for energy saving. Furthermore, since the methane gas cylinder 12 can be attached and detached via the attachment/detachment valves 16, 16, it can be used as portable fuel or for powering automobiles. As mentioned above, it has many advantages such as being safe even when the pressure inside the tank 5 increases abnormally.

[Brief explanation of drawings]

The drawings are explanatory sectional views systematically showing the present invention. Codes in the figure: 1 is a toilet bowl, 3 is a storage pipe, 4 is a branch pipe, 5 is a gas tank, 6 is a bleed pipe, 8 is a heating device, 9 is a stirring blade, 11 is a compressor, 12 is a methane gas cylinder , 16 is a desorption valve, 17 is a motor,
Reference numeral 18 indicates a pressure responsive switch, and reference numeral 20 indicates a passage.

Claims (1)

[Claims] 1 The lower end of a storage pipe 3 of a required height that is connected to the toilet bowl 1 via an auxiliary tank 2 is connected to the lower part of a fuel tank 5 via a branch pipe 4. It is formed as a closed tank equipped with a heating device 8, a stirring blade 9 inside, and a bleed pipe 6 connected to a methane gas cylinder 12 via a compressor 11 operated in response to an increase in pressure inside the tank at the top, and further The methane gas cylinder 12 is configured to be detachable via a detachable valve 16, and the upper part of the auxiliary tank 2 is connected to a discharge pipe/deodorizing pipe 19 by a passage 20 located at a required height above the gas tank. A methane gas extraction device using human waste characterized by being connected.