JP2593803B2 - Fermentation decomposition equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fermentation decomposition apparatus, and more particularly to a closed fermentation decomposition apparatus capable of almost completely decomposing organic waste at a high speed.

[0002]

2. Description of the Related Art There are known fermenters for producing feed, fertilizer or compost from raw garbage and livestock dung as raw materials. Such a fermentation apparatus generally includes a fermentation tank in which an apparatus for stirring the raw materials is provided. Further, there is also known one provided with a heating device for heating a raw material in a fermentation tank.

[0003]

However, in the conventional fermentation apparatus, the raw materials are solidified in a lump due to imperfect stirring or mixing, and when the raw material has a high moisture content, the air permeability becomes poor, and many fermentations are required for fermentation. take time. Further, in the conventional fermentation apparatus, it is necessary to take out the fermented product from the fermentation tank after the fermentation, and there has been an inconvenience such as generation of a bad smell.

The present invention has been made in consideration of the above-mentioned conventional problems,
It is an object of the present invention to provide a closed fermentation decomposition apparatus capable of efficiently stirring raw materials, shortening fermentation time, and decomposing into carbon dioxide and water without generating an odor.

[0005]

According to the present invention, there is provided a fermentation and decomposition apparatus comprising: a fermenter for storing organic waste; a porous air vent region formed at a lower portion of the fermenter; A suction pipe disposed so as to cross obliquely downward from above the cylindrical wall surface, and a stirring blade provided in the fermentation tank, wherein the suction pipe has an exhaust port connecting pipe, and the exhaust port connecting pipe has Water droplets generated by condensation of water vapor sucked in the suction pipe are connected to the cylindrical wall surface at an angle suitable for falling by gravity into the suction pipe, and air is the porous air. The mouth area, the inside of the fermenter and the suction pipe are formed so as to be air-tightly circulated through a blower device.

[0006]

The organic waste stored in the fermenter is cut or agitated by a stirring blade, while air is blown from a porous air port region formed at a lower portion of the fermenter by a blower device. It is fed inside. As a result, microbial activity is promoted, and the contents are fermented and decomposed. The gas and steam generated in the fermentation decomposition process go up to the upper part of the fermenter and are sucked into the suction pipe. Then, the water condenses due to the cooling, the water is removed, and the gas is returned to the porous air port region again. The condensed water does not flow back into the fermentation tank due to the connection structure between the exhaust port connecting pipe extending from the suction pipe and the outer wall surface of the fermentation tank.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 (a) is a schematic perspective view showing an appearance of a fermentation / decomposition apparatus showing one embodiment of the present invention, and FIG. 1 (b) is an external view of the fermentation / decomposition apparatus shown in FIG. FIG. Referring to both figures, the fermentation decomposition apparatus 1 includes a cylindrical (drum) type fermenter 2 having a cylindrical wall substantially parallel to the floor surface (that is, the fermenter 2).
It is held via legs 3 installed on the floor surface so that the cylinder is positioned laterally with respect to the floor surface. Both cut ends of the cylinder of the fermenter 2 are closed with a plate of the same material as the cylinder (hereinafter, referred to as a cylinder).
This closed surface is called a side surface). The material of the cylinder may be iron, brass, stainless steel, copper or other metal materials or plastic materials. In the embodiment, the material is made of iron.

On the other hand, two organic waste inlets 4, 4 are formed slightly above the circumferential central portion of the cylindrical wall surface of the fermenter 2 and lids 5, 5 are provided respectively. The lids 5 allow the organic waste inlets 4 and 4 to be hermetically closed. Further, although not necessarily required in the fermentation decomposition apparatus of the present invention, when the non-organic waste is introduced from the organic waste input ports 4 and 4, it is collected or for other convenience, A take-out port 6 and an opening / closing door 7 are provided below the cylindrical wall surface opposite to the organic waste input ports 4 and 4. The take-out port 6 can also be hermetically closed by the opening / closing door 7 like the lids 5 and 5.

A blower device 8 is provided at the upper part of the fermenter 2, and the outlet of the blower 8 is connected to the bottom of the fermenter 2 via a conduit (conduit pipe or hose) 9. The blower device 8 supplies air into the fermentation tank 2 from a porous air port provided at the bottom of the fermentation tank 2. The air inlet of the blower device 8 is connected via a conduit 10 to an air outlet of a steam cooling tank 11 fixed to one side of the fermenter 2. The air suction port of the steam cooling tank 11 is evacuated from a required portion of the cylinder wall surface of the fermentation tank 2 and exhausted from an exhaust port. It is connected to a hose 13 which communicates. As a result, the air discharged from the blower device 8 is supplied to the fermenter 2, the suction pipe 12, the hose 13,
It returns to the blower device 8 through the steam cooling tank 11 and the conduit 10. That is, the fermenter 2
The air inside is circulated through the above-mentioned path.

A drive motor 14 is provided on the upper part of the fermenter 2 substantially opposite to the blower device 8, and the drive motor 14 is connected to a power source such as rotation of a stirring blade described later, an oil suction pump and the like. Become. In addition, on one side of the fermenter 2, in addition to the steam cooling tank 11, a power control panel 1 is provided.
A power supply 5 is provided to supply power to the blower device 8, the drive motor 14, a timer described below, and other electric systems, and to control opening and closing of electric circuits.

A fixed amount oil tank 16 is fixed to the other side of the fermenter 2, and the fixed amount oil tank 16 is connected to an oil suction pump 18 via a conduit 17.
The oil suction pump 18 enables waste oil and the like to be scatteredly supplied to the inside of the fermentation tank 2 from a conduit 19 communicating with a plurality of points (five points in the embodiment) on the cylindrical wall surface of the fermentation tank 2. It is. The oil suction pump 18 is connected to the drive motor 14 via a pulley, a belt, and other transmissions. On the other hand, the drive motor 1
The rotation shaft 4 is connected to a rotation shaft of a stirring blade provided in the fermenter 2 via a reduction gear, and the reduction gear is surrounded by a cover 20 so that dust and the like do not adhere.

The rotating shaft of the stirring blade is disposed substantially at the center axis of the cylinder of the fermenter 2. The rotating shaft is provided at a plurality of positions (four in the embodiment) in the radial direction. The arm extending to is fixed. The directions in which the respective arms extend from the rotation axis are different from each other. For example, the directions differ by 90 degrees in the circumferential direction of the rotation axis between the adjacent arms. And the arm 3
0 at the front end of the arm 30,
A cutting blade 31 bent in a letter shape is formed (see FIG. 2). In addition, the said arm 30 is accompanied by rotation of the said rotation axis,
With the cutting blade 31 positioned near the inner surface of the cylindrical wall of the fermenter 2, the top of the cutting blade 31 is moved so as to push the contents and advance. More specifically, the cutting blade 31 cuts or crushes the contents,
It plays the role of mixing. The cutting blade 31 makes a groove in a part of the contents after it moves. Then, the solid content falls down into the groove. Again, when the cutting blade 31 rotates and returns, the solid content is cut. Then, the plane of the cutting blade 31 crushes the contents such that the contents rub against the inner surface of the cylindrical wall of the fermenter 2. Such an operation is totally mixed and the contents are agitated.

FIG. 3A is a schematic view showing the structure of the bottom of the fermenter 2, and FIG. 3B is a view showing that many pores are formed in the bottom of the fermenter 2. It is a schematic diagram. Referring to both figures, a porous air port (many pores) 40 is formed in a predetermined area at the bottom of the fermenter 2 as shown in FIG.
Are drilled. A cover 41 is provided on the outside thereof, and a gap is formed between the cover 41 and the bottom, and the cover 41 is fixed to the outside of the bottom by fastening means such as welding or bonding. . Although not shown, an air supply port is formed in the cover 41, and the air supply port is connected to the conduit 9.

FIGS. 4 (a) and 4 (b) are schematic views for explaining a structure for mounting the suction pipe 12. FIG. Referring to both figures, exhaust port connecting pipes 50, 50, 50, 50 are connected to the suction pipe 12 at substantially equal intervals, and the tip of each of the exhaust port connecting pipes 50, 50, 50, 50 is The fermentation tank 2 is connected to an exhaust port formed at a required position on a cylindrical wall surface.

By the way, the steam discharged from the fermenter 2 goes out to the exhaust port connecting pipe 50 and is cooled, and as a result, dew forms. Therefore, the exhaust port connecting pipes 50, 50, 5 and 5 are prevented so that the water droplets do not flow back into the fermentation tank 2.
It is necessary to devise a method of binding between 0 and 50 and the exhaust port on the wall of the fermenter 2. In the present invention, as a solution to this problem, as shown in FIG.
The projecting directions of 0, 50, and 50 from the cylinder wall surface are selected obliquely downward, and water droplets are induced by gravity to cause the suction pipe 12 to protrude.
It is made to fall inside. The suction pipe 12 is arranged so as to cross the cylinder wall surface obliquely downward from above, so that the effect of collecting water droplets is further enhanced.

When the organic waste is introduced through the organic waste input ports 4 and 4 and the drive motor 14 and the blower device 8 are operated, a porous air port at the bottom of the fermenter 2 is opened. Air is forcibly fed from 40. Also,
The contents are stirred by the stirring blades to promote microbial activity, and the contents are fermented and decomposed. In addition,
It is more effective to mix the organic waste with a culture substrate containing hyphae suitable for the type of the organic waste.

Steam and carbon dioxide gas generated in the fermentation decomposition process are taken out through the suction pipe 12, and the taken out steam becomes water in the course of reaching the suction pipe 12 and the steam cooling tank 11. Accumulates in the steam cooling tank 11 and is discharged manually or at the appropriate time by controlling an electromagnetic valve or the like. The gas is returned to the bottom of the fermenter 2 and circulated as described above, and the same process is repeated.

The blower device 8 employs a ring-plow type (the same principle as a Wesco type pump belonging to a friction pump is applied to gas, and a high wind pressure can be obtained even with a small size). Air forced into the interior of the fermenter 2 is compressed therein, and the temperature of the compressed air rises inside the fermenter 2 and changes to warm air. Therefore, the fermentation decomposition function of the high-temperature fermenting microorganism can be promoted, and there is no need to externally heat in winter. Further, the fermenter 2 is completely sealed, and does not emit a bad odor to the outside.

In the fermentation decomposition treatment of mineral oil, vegetable oil, and other liquid substances, the stirring time and the injection time of the liquid substance are set in a fixed-quantity oil tank 16 by a timer. Stirring is uniformly performed as a whole, and when the content of the fixed quantity oil tank 16 becomes empty, the operation of the timer is stopped.

[0020]

As described above in detail, according to the present invention, the raw materials can be efficiently stirred, the fermentation time can be shortened, and the hermetically sealed air can be decomposed into carbon dioxide and water without generating a bad odor. A type of fermentation cracker is obtained. In addition, by adopting a ring-plow type blower device, the air circulating in the fermenter can be compressed into warm air, and the fermentation decomposition function of high-temperature fermenting microorganisms can be promoted without heating. be able to.

[Brief description of the drawings]

FIG. 1 (a) is a schematic perspective view showing the appearance of a fermentation decomposition apparatus showing one embodiment of the present invention, and FIG. 1 (b) shows the appearance of the fermentation decomposition apparatus shown in FIG. It is a schematic perspective view.

FIG. 2 is a partially omitted perspective view of a stirring blade showing a cutting blade provided at a distal end portion of an arm fixed to a rotating shaft.

FIG. 3 (a) is a schematic diagram showing a state of the structure of the bottom of the fermenter, and FIG. 3 (b) is a schematic diagram showing a state where many pores are formed in the bottom of the fermenter.

FIGS. 4A and 4B are schematic views illustrating a structure for mounting a suction pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fermentation decomposition apparatus 2 Fermentation tank 3 Leg 4 Organic waste input port 5 Lid 6 Outlet 7 Opening / closing door 8 Blower device 9 Conduit 10 Conduit 11 Steam cooling tank 12 Suction pipe 13 Hose 14 Drive motor 15 Power control panel 16 Fixed amount Oil tank 17 Conduit 18 Oil suction pump 19 Conduit 20 Cover 30 Arm 31 Cutting blade 40 Porous air port 41 Cover 50 Exhaust port connecting pipe

Claims (3)

(57) [Claims] 1. A fermenter for storing organic waste, a porous air vent region formed in a lower portion of the fermenter, and a diagonally lower wall of an outer cylindrical wall of the fermenter disposed obliquely downward from above. And a stirring blade provided in the fermenter, wherein the suction pipe has an exhaust port connecting pipe,
The exhaust port connecting pipe is connected to the cylinder wall at an angle suitable for a water drop generated by condensation of water vapor sucked in the suction pipe to be guided by gravity and fall into the suction pipe, A fermentation decomposer in which air is circulated air-tightly through the porous air port region, the inside of the fermenter and the suction pipe through a blower device. 2. The stirring blade has a rotating shaft, and arms extending in a radial direction are fixed to a plurality of positions on the rotating shaft, and the tip of each arm is sandwiched by the tip of the arm. The fermentation decomposition apparatus according to claim 1, wherein a cutting blade bent in a side inverted V-shape is formed. 3. The fermentation decomposition apparatus according to claim 1, wherein the blower apparatus is of a ring-pro type.