JPH05221766A - Composting device for domestic garbage - Google Patents

Abstract

PURPOSE:To provide a composting device for domestic garbage at a low cost which is capable of efficiently and aerobically fermenting and decomposing domestic garbage and has a simple constitution. CONSTITUTION:The introduction port 31 of garbage is opened in the upside of a vertical cylindrical fermenter 3. A chamber 35 for a combined exhaust and drainage is comparted under a floorboard 34 made of a perforated board having permeability in the bottom part via the floorboard 34. A composting device is equipped with an opening/closing cover 2 for airtighly blocking the introduction port 31 of garbage, an air pump 8 for blowing air into the fermenter 3 toward the bottom part from the upside and an agitation handle 7 of an agitator constituted of an agitation shaft 6 and impellers 62, 64 interpolated in the inside of the fermenter 3. Garbage is successively introduced into the fermenter 3 by the agitation handle 7, temporarily agitated and mixed after introduction and always ventilated by the air pump 8. The air is passed through the built-up layer of garbage from the upside of the fermenter 3 and forcedly ventilated toward the inside of the chamber 35 in the bottom part of the floorboard. Both exhaust discharged into the chamber the ventilation and drainage of condensed dew water generated on the wall deodorization by saturated air in the exhaust are detoured to a necessary surface route from the inside of the chamber by a pipeline and discharged to the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention treats garbage such as kitchen garbage generated in a kitchen at home so that it can be fermented and decomposed for each household to return it to compost and pear gardens or flower beds. The present invention relates to a household garbage composting device.

[0002]

2. Description of the Related Art It is a waste of resources to treat raw garbage generated at home one after another by fermenting and decomposing it so that it can be returned to the compost and the vegetable garden or the flowerbed as soil. Since it is also consistent, it has attracted attention, and in the past, an apparatus of this kind has been disclosed in, for example, Japanese Patent Laid-Open No.
The ones described in Japanese Patent No. 190284, Japanese Utility Model Laid-Open No. 61-155340, etc. have been proposed.

Composting of garbage is accomplished by fermenting and decomposing the organic matter in the garbage with the help of microorganisms. In this fermentation, the fermentation heat obtained during fermentation is large, and the generation of a bad odor associated with fermentation is also small.Therefore, a method of aerobic fermentation decomposition in which oxygen is given to the processed product to ferment is generally adopted. ing. In order to promote this aerobic fermentation, it is necessary to maintain an optimum environment for the activity of microorganisms, so it is necessary to maintain the treated material in a water state and a temperature state within an appropriate range and supply oxygen necessary for fermentation. is there. Therefore, in this type of raw garbage composting apparatus, as seen in the above-mentioned prior art, stirring means for equalizing the water state and the oxygen supply state of the entire treated material, and the water supply along with the oxygen supply. Ventilation means for keeping below a certain value is provided, and also heating means etc. for promoting stable fermentation even in the cold season are provided, which is suitable for aerobic fermentation in the container serving as a fermenter. The environment is maintained to promote the composting reaction of raw garbage.

[0004]

By the way, in the prior art, when attention is paid to the aeration means for air required for maintaining the aerobic fermentation decomposition described above, for example, the above-mentioned JP-A-59-190284. In the one described in the publication, for a vertical fermentation tank, air is introduced into the tank from an air supply pipe provided at the bottom of the fermentation tank, and the air flows upward through the deposits in the tank. The exhaust pipe provided in the upper space of the fermentation tank discharges the solution to the outside of the tank. In addition, the actual Kaisho 61-155
Also in the one described in Japanese Patent No. 340, in the vertical type fermenter, the air is sucked into the tank through an air intake port provided at the bottom of the fermenter and the sediment is circulated upward, and the tank is discharged through an upper air discharge port. It is designed to be discharged to the outside.

As in the above-mentioned prior art, air for maintaining aerobic fermentation is inhaled from the bottom of the vertical fermentation tank to flow the sediment upward and out of the upper space of the fermentation tank. However, there are the following problems with the method of discharging to. (1). First, when the garbage is put into the fermenter, there is a problem that a foul odor is scattered outside when the opening / closing lid that closes the upper inlet is opened each time the garbage is put. (2) .The biggest problem is that when exhaust gas passes through the sediment and flows into the upper space of the fermenter, saturated air containing water touches the upper wall of the fermenter and the inner surface of the lid. For the dew condensation phenomenon in which a large amount of water drops adhere, the structure of the entire device is greatly complicated because a mechanism for draining this dew condensation water out of the tank is required. (3). In addition, in the above-mentioned drainage water treatment of condensed water, even if a drainage mechanism is provided, it is not possible to reliably remove the water droplets of condensed water.
The problem that water drops removed from the fermented product returns to the fermented product again and water is not removed properly is also derived. (4) .Furthermore, the phenomenon that the lower part of the sediment near the bottom of the fermentation tank is excessively dried and solidified causes clogging of the aeration floor plate placed at the bottom of the fermentation tank, and air permeability is increased. The problem of being hindered also arises.

In view of the above-mentioned problems, the present invention has a structure in which the dew condensation that occurs in the air discharge route for maintaining aerobic fermentation is generated under the fermentation tank, and the dew condensation water is discharged. At this time, a special drainage mechanism is not required, which greatly simplifies the configuration of the entire device, efficiently realizes aerobic fermentation decomposition of raw garbage, and can reduce odor scattering as much as possible The object is to provide a device for composting raw garbage.

[0007]

In order to achieve the above object, the apparatus according to the present invention is provided with a floor plate made of a perforated plate having an air-permeable perforated floor plate at the bottom and an opening for the input of garbage. It has a vertical tubular fermentation tank with a chamber for exhaust and drainage defined below, and at the top of this fermentation tank, an opening and closing lid that airtightly closes the garbage input port, and inside the fermentation tank from above It is equipped with a blowing means for blowing air toward the bottom and a driving means for rotating the stirring device installed in the fermentation tank, and is required for raw garbage sequentially fed into the fermentation tank by the rotation of the stirring device by the driving means. As a ventilation structure that gives the stirring action of, and forcedly ventilates the air blown by the blowing means from the top of the fermentation tank to the chamber at the bottom of the floorboard through the accumulation layer of raw garbage, this ventilation allows the air to enter the chamber at the bottom of the floorboard. Outflow The evacuation and drainage of condensation water generated in the wall by the saturated air in the exhaust gas, and characterized by being configured to discharge to the outside to bypass the required deodorizing path via line than the chamber.

Further, the apparatus according to the present invention comprises a heating device for supplementarily providing a required heating action to the outer peripheral portion of the fermentation tank,
Insulating heat insulating material to prevent the release of heat is attached, and further,
An air pump is used as the air blowing means to constantly ventilate the garbage accumulated in the fermenter with the required amount of air.The air blowing means and the driving means of the stirring device are provided inside the lid of the opening / closing lid. It is also a feature that it is provided.

[0009]

In the composting device configured as described above, the garbage generated in each household is sequentially put into the fermenter from the top, and the stirring device is rotated the required number of times (about 15 times) after each time. After stirring and mixing the raw garbage, it is used to operate the air blower to keep the ventilation, and oxygen is supplied to the deposit of the garbage thrown in by this ventilation, By allowing the organic matter in the fertilizer to be continuously fed under the optimal conditions under which aerobic fermentation and decomposition are carried out with the help of microorganisms, the composting reaction is sequentially performed until the inside of the fermenter is full. When the inside of the fermenter is full, the processed material is taken out as compost and moved to the next processing.

In this case, according to the structure of the present invention, the air blown into the fermenter flows from the top to the bottom of the garbage accumulation layer, and then the bottom of the perforated floor plate having air permeability. It is configured such that it flows out into the chamber divided into, and is discharged to the outside from this chamber through a required deodorizing route. In such an air flow path, when exhaust gas flows from the top to the bottom of the garbage accumulation layer and flows out into the chamber, saturated air in the exhaust gas touches the wall surface in the chamber to cause dew condensation. However, since this condensed water can be directly discharged from the chamber to the lower side by a pipe line, the condensed water does not return to the upper fermentation tank, water is efficiently removed, and the removed wastewater is recovered. However, it will be possible to easily collect the wastewater simply by providing a drainage path at the bottom of the fermenter.

The air that has passed through the accumulated layer of garbage is
Since it does not return to the upper part of the fermenter, odor does not scatter to the outside from the upper inlet when the lid is opened when the raw garbage is input, and the exhaust gas is more specific than that in the chamber. Since the deodorization route can be bypassed and discharged to the outside, odor scattering can be minimized. Furthermore, since the air flows through the sediment layer of raw garbage from top to bottom, the phenomenon that the lower part of the sediment near the bottom of the fermentation tank is not excessively dried and solidified does not occur, and the aerated floor plate placed at the bottom of the fermentation tank. It is possible to obtain such an effect that the problem of causing clogging of the sheet and obstructing air permeability is not derived.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the external appearance of an apparatus according to the present invention, and FIG. 2 is a vertical sectional side view showing the internal structure of the apparatus. In these figures, reference numeral 1 denotes a square-walled device main body that constitutes an outer wall, and the device main body 1 has an opening / closing lid 2 at the top.
Is hinged so that it can be opened and closed upward. In addition, inside the apparatus main body 1, a vertical cylindrical fermentation tank 3 having an opening 31 for raw garbage at the top, and below the fermentation tank 3, a required amount of water is stored inside. The aeration tank 4 and the deodorizing column 5 containing the deodorizing adsorbent 51 therein are provided.

As shown in FIG. 3, the fermenter 3 is formed into a bottomed tubular body having an opening at the top, and has a flange portion 32 at the upper edge, and the flange portion 32 is used as the apparatus body 1. By contacting the upper edge of the fermenter 3, the fermenter 3 is supported detachably upward in the internal space of the apparatus body 1. The flange 32 of the fermenter 3 has a ring-shaped seal member 2 provided on the lower surface of the opening / closing lid 2 when the opening / closing lid 2 is closed.
3 is in contact with the upper surface to hermetically seal the upper opening of the fermenter 3. Inside the fermenter 3, a floor plate 34 made of a perforated plate having a slight air permeability is provided with a required space between the bottom plate 33 and the bottom plate 33. A chamber 35 for drainage is partitioned.
A discharge port 36 is provided on the bottom surface of the chamber 35,
The tip of the discharge hose 37 connected to this is connected to a suction pipe 41 provided inside the aeration tank 4, and the suction pipe 4
The tip of No. 1 is opened below the surface of the water stored in the aeration tank 4.

Further, inside the fermentation tank 3, there is provided a stirring shaft 6 standing upright in the center of the fermentation tank 3, and the stirring shaft 6 is radially arranged at the upper position on the circumference of the stirring shaft 6. An upper stage stirring blade 62 fixed by an extending arm 61 and a lower stirring blade 64 fixed by a radially extending arm 63 are mounted at a lower position of the shaft periphery. The stirrer is composed of. As shown in FIG. 5, the upper and lower stirring blades 62, 64 are arranged such that the upper stirring blade 62 is in a direction of advancing in the rotational direction with respect to the tip end of the arm 61 extending in the radial direction. It is fixed so as to incline downward at the required angle. The lower stirring blade 64 is oriented so as to recede in the rotational direction with respect to the tip of the radial arm 63 extending to the vicinity of the inner wall of the fermentation tank 3 and has a diameter smaller than the turning radius of the arm tip. Curvature r
A curved shape is formed so as to rise upward at a required receding angle α (see FIG. 2) along with the stirrer blade 64 at the lower stage along the curvature r and the receding angle α. By moving along a spiral stirring locus that rises up, the blades 64 are unlikely to be caught even if large raw dust is mixed in the processed products that have been put into and accumulated in the fermenter 3. The stirring performance is such that the processed product is cut back from the cylindrical peripheral wall of the fermenter 3 toward the inside. The lower part of the stirring shaft 6 is the floor plate 3
4 is rotatably supported, and the upper portion is rotatably supported by a supporting member 65 so as to be perpendicular to the central position in the fermenter 3, and the upper end of the stirring shaft 6 is a T-shaped joint. It is formed in the portion 66, and is configured so that it can be easily connected and disconnected with a stirring drive means described later.

On the outer peripheral portion of the fermenter 3, the fermenter 3
The electric heater part 9 is surrounded by a lower part as a heating device which supplementally gives a required heating action to the inside of the main body 1 of the apparatus, which is located at the outer peripheral part of the fermenter 3, although not shown. A heat insulation material is provided to prevent the heat radiation of the. As shown in FIGS. 3 and 4, the electrothermal heater unit 9 as the heating device is a metal fixing band 9 having a tightening mechanism.
1 is fixed to the fermenter 3, and the fixing band 91 is fixed or detached from the fermenter 3 by performing a tightening operation or an opening operation. That is, the fixed band 91 is
As shown in FIG. 4, a part of the circumference is fixed to the inner wall of the apparatus main body 1 by a fixing metal fitting 92, and the opposite side facing the fixing position is cut off and tightened at each separation end. 93 is formed. An operating shaft 94 having a right screw and a left screw is threadedly inserted into the nuts of both tightening parts 93 with the fixing part 96 fixed to the inner wall of the apparatus body 1 sandwiched between the pair of opposite tightening parts 93. Was
When the operation shaft 94 is normally rotated in one direction by rotating the operation knob 95 provided outside the apparatus main body 1, the fixing band 91 is tightened in a direction in which the fixing band 91 is in close contact with the outer periphery of the fermentation tank 3. When the fermenter 3 is detached, the fermenter 3 is opened in a direction away from the outer periphery of the fermenter 3 when rotated in the other direction.

The opening / closing lid 2 is internally provided with an electric air pump 8 serving as a blowing means between an upper plate 21 and a lower plate 22 constituting the lid body. This blower means is an opening / closing lid 2
The outlet 81 is installed downward so that the air blown by the air pump 8 when it is closed is forcibly ventilated from above into the fermentation tank 3. Further, a variable resistor (not shown) for variably adjusting the drive voltage to the air pump 8 is installed on the opening / closing lid 2, and an adjusting knob 82 thereof is provided on the side portion of the opening / closing lid 2, By the adjustment, the drive voltage to the air pump 8 can be varied to adjust the amount of air ventilated in the fermentation tank 3.

Further, the opening / closing lid 2 is provided with a driving means for rotating the agitator between an upper plate 21 and a lower plate 22 constituting the lid body. This drive means has a stirring handle 7 that can be rotated manually, and a rotating shaft 71 of this stirring handle 7 is inserted between an upper plate 21 and a lower plate 22 that form a lid, and decelerates there. One of the wows that makes up the mechanism
The worm 72 is fixed, and the shaft of the other worm wheel 73 meshing with the worm 72 serves as a drive shaft 74 for the opening / closing lid 2.
Of the drive shaft 74 when the opening / closing lid 2 is closed.
The bifurcated drive transmission claw 75 attached to the end of the
It is coupled with a T-shaped joint 66 formed on the upper end of the shaft to transmit the rotational force to the stirring shaft 6, and when the opening / closing lid 2 is opened, the drive transmission pawl 75 is easily separated from the T-shaped joint 66. It can be configured.

The aeration tank 4 is arranged at the bottom of the apparatus main body 1 below the fermentation tank 3, and the aeration tank 4 has a side lid 11 hinged to the lower portion of the apparatus main body 1. It can be taken out by opening it. Aeration tank 4
As shown in FIG. 6, there is a drain pipe 42 for overflowing the internal water when the water stored in the tank 4 reaches a prescribed water level, and the drainage path of this drain pipe 42 is regulated. Only the surplus water that has reached the water level flows out so that the air in the upper part of the tank does not leak.
Are formed. In addition to the suction pipe 41 connected to the discharge hose 37 described above, the aeration tank 4 includes the tank 4
There is provided an air hose 44 that communicates with the upper space of the device and discharges the air in the tank. The tip of the air hose 44 is connected to the air intake port 52 of the deodorizing column 5.

The deodorizing column 5 described above has an air inlet 52 connected to the above-mentioned air hose 44 at one end of a hermetically sealed cylindrical container, and an air outlet 53 is opened at the other end for adsorption inside the container. The deodorizing material 51 is accommodated. As the adsorbing deodorizing material 51, a natural adsorbing deodorizing material made of peat moss is used. The deodorizing column 5 has a vertically long container so that the air passing through the adsorbing deodorizing material 51 can take a long time, and the deodorizing column 5 is disposed in a blind spot space of one corner of the apparatus body 1. It is detachably attached by opening the side lid 12 hinged to the corner portion.

Next, the usage mode and the operation of the present apparatus configured as described above will be described. This device is installed in each household, and the garbage generated in each household is sequentially put into the fermentation tank 3 every day to give a required stirring action to this, and it is also constantly aerated to be suitable for aerobic fermentation. While maintaining the water and temperature conditions, the supply of air (oxygen) causes the aerobic fermentation and decomposition with the help of microorganisms, and the input sediment is sequentially composted until the inside of the fermenter 3 becomes full. Lasts,
When the inside of the fermenter 3 is full, the fermented layer 3 is removed and the composted processed product is discharged. When used, a fermentation start-up period is required to promote the start of aerobic fermentation when the first garbage is added. At the time of the first charging, first open the opening / closing lid 2, add the fermented seed bacteria together with raw garbage from the upper charging port into the fermentation tank 3, and add a fermentation accelerator such as sawdust to facilitate the passage of air inside the charging material. throw into. After the charging, the opening / closing lid 2 is closed to seal the upper opening of the fermenter 3, and the stirring handle 7 is rotated about 15 times to stir and mix the charging materials with the stirring device. Then, the air pump 8 is operated to blow the air from the blowout port 81 located above the fermentation tank 3 toward the input in the fermentation tank 3. During the start-up period of fermentation at the initial stage of introduction, the amount of air blown by the air pump 8 is reduced to a small amount to accelerate the start-up of fermentation. Fermentation takes place in 3 to 5 days after the first injection. After that,
The generated garbage is put into the fermenter 3 in such a manner as to be sequentially stacked on the fermented processed material. Every time the garbage is added, the stirring handle 7 is operated to stir and mix the deposit. After the start-up period of fermentation, it is not necessary to add inoculum or a fermentation accelerator, and if the input amount is large depending on the input amount of raw garbage, the air pump 8 blows a large amount of air, If the amount is small, adjust the air flow rate to a low level. When the garbage is continuously added, the inside of the fermenter 3 becomes full in about 3 months when the amount of garbage produced in a normal household is full, and the deposits in the filled fermenter 3 are maintained by the composting reaction. The entire amount is composted and discharged. If a small amount of the composted sediment is left in the fermenter 3 for the next use, it can be used as an inoculum at the time of the first input of raw garbage.

During the above-mentioned use, the air blown from above the fermenter 3 by the air pump 8 ventilates the deposits in the fermentor from top to bottom to supply oxygen into the deposits and deposits. The exhaust gas which has absorbed the water and has passed through the deposit flows out through a floor plate 34 made of a porous plate having air permeability into a chamber 35 defined below the floor plate 34. In such an air circulation path, the following effects are obtained. (1). In the case where the air flows from the top to the bottom in the fermenter 3 through the garbage accumulation layer and flows out into the chamber 35, the air is discharged into the chamber 35 and the exhaust gas is supersaturated inside the chamber 35. Condensation is generated on the wall surface of the
Discharge port 36 provided at the bottom of 5 (bottom plate 33 of fermenter 3)
From the water to the suction pipe 41 in the aeration tank 4 through the discharge hose 37, and is drained below the water surface in the aeration tank 4 to be collected in the tank 4. The water adsorbed by the circulation of air is efficiently removed without returning to the inside, and the removed water is also collected at the bottom of the fermentation tank 3 by the drain port 36, the discharge hose 37, the suction pipe 41, It will be possible to easily collect by simply providing a drainage path such as the aeration tank 4. (2). Further, the air that has passed through the accumulated layer of garbage is discharged into the chamber 35 and then from the bottom discharge port 36 through the discharge hose 37 → suction pipe 41 → aeration tank 4 → air hose 44 to the deodorizing column 5 Since the exhaust gas containing the malodorous component does not flow back to the upper part of the fermentation tank 3, the odor containing the malodorous component is upward when the opening / closing lid 2 is opened for the input of raw garbage. The phenomenon of scattering from the charging port 31 to the outside does not occur. (3). Further, the exhaust gas is exhausted to the atmosphere through the exhaust port 36 provided in the bottom portion of the chamber 35 as described above, through the exhaust hose 37 → the suction pipe 41 → the aeration tank 4 → the air hose 44 → the deodorizing column 5 and specified. Since the deodorizing route (aeration tank 4, deodorizing column 5) is bypassed and discharged to the outside, odor scattering can be minimized. (4). Further, since the air comes in contact with the fresh garbage newly introduced into the fermenter 3, the air flows through the accumulation layer of the previously introduced raw garbage from top to bottom. The phenomenon that only the fermented material deposited on the bottom of the tank 3 is excessively dried and solidified does not occur, and the perforated floor plate 34 having air permeability disposed at the bottom of the fermentation tank 3 is clogged and air is aerated. The problem of inhibiting sex does not arise.

[0022]

Industrial Applicability According to the present invention, an apparatus capable of efficiently aerobically fermenting and decomposing raw garbage generated daily in each household into a fermenter to compost it. In particular, the device allows the aeration form of air, which is indispensable for maintaining aerobic fermentation decomposition, to flow from the upper part of the fermenter to the lower part of the fermenter through the accumulation layer of food waste, thereby saturating exhaust gas. Condensation caused by air
Since the form occurs in the chamber divided into the lower part of the fermenter, the structure of drainage of the condensed water is greatly simplified, and the excess water adsorbed and removed from the fermenter can be removed efficiently and appropriately. In addition, since it is possible to obtain a device with easy collection of waste water and minimal odor scattering with a simple configuration, it is possible to provide an excellent effect that an inexpensive household garbage composting device can be provided. ..

[Brief description of drawings]

FIG. 1 is a perspective view showing the appearance of a household garbage composting device.

[Figure 2] Vertical section view of household garbage composting device

FIG. 3 is a perspective view showing a fermenter and an electric heating heater.

FIG. 4 is a cross-sectional view showing a position where the electric heating heater is arranged.

FIG. 5 is a plan view illustrating a stirring blade of a stirring device.

FIG. 6 is a perspective view showing a part of the aeration tank in a partially broken manner.

[Explanation of symbols]

1 Device Main Body 11, 12 Side Lid 2 Open / Close Lid 21 Upper Plate 22 Lower Plate 2
3 Seal member 3 Fermenter 31 Raw garbage input port 32 Flange part 33 Bottom plate 34 Floor plate 35 Chamber 36 Discharge port 37 Discharge hose 4 Aeration tank 41 Intake pipe 42 Drain pipe 4
3 Siphon part 44 Air hose 5 Deodorizing column 51 Deodorizing adsorbent 52 Air intake 53 Air outlet 6 Stirring shaft 61 Arm 62 Upper stirring blade 63 Arm 64 Lower stirring blade 65 Supporting member 66 T-shaped Joint part r Curvature α Receding angle 7 Stirring handle 71 Rotating shaft 72 Worm gear 73 Worm wheel 74 Drive shaft 75 Drive transmission pawl 8 Air pump 81 Air outlet 82 Adjusting knob 9 Electric heating part 91 Fixing band 92 Fixing fitting 93 Tightening 94 Operation shaft 95 Operation knob 96 Fixed part

Claims (5)

[Claims] 1. A vertical tubular fermenter having a raw garbage input opening at the top and a ventilation / drainage chamber underneath a floor plate made of air-permeable perforated plate at the bottom. Then, on the upper part of the fermentation tank, an opening / closing lid that hermetically closes the raw garbage input port, a blowing means for blowing air from the top to the bottom inside the fermentation tank, and a stirring device installed inside the fermentation tank is rotated. A driving means is provided, and the rotation of the stirring device by the driving means gives a required stirring action to the raw garbage sequentially introduced into the fermenter, and the air blown by the blower means is generated from the upper part of the fermenter. The ventilation structure is designed to forcibly ventilate through the accumulated layer of dust toward the chamber at the bottom of the floorboard.The exhaust gas flowing into the chamber due to this ventilation and the condensation water generated on the wall surface due to the saturated air in the exhaust gas are drained from the chamber through the conduit. By Composting device household garbage which characterized by being configured to discharge to the outside to bypass the deodorizing path. 2. The fermentation tank is characterized by being provided with a heating device for supplementing a required heating action to the outer peripheral portion of the fermentation tank, and an insulating heat insulating material for preventing heat release. The household garbage composting device according to claim 1. 3. The household garbage composting device according to claim 1, wherein the fermenter is detachably attached to the upper part of the main body of the device. 4. The air blower as an air blower is configured to constantly ventilate a desired amount of air to the garbage accumulated in the fermentation tank.
The household garbage composting device according to item 3. 5. The domestic garbage as claimed in claim 1, wherein the blowing means and the driving means for the stirring device are provided inside the lid of the opening / closing lid. Composting device.