JPH11188342A - Garbage treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a garbage treatment apparatus which can form an aerobic propagation environment for propagating mold fungi which decompose garbage without adding an accelerator such as enzyme fungi and without discharging offensive odors. SOLUTION: In a garbage treatment apparatus in which garbage is charged into a treatment tank for housing aerobic microorganisms and the culture base material of the microorganisms to be fermentation-decomposed by the microorganisms, peat moss is used as the culture base material 7, and an agitation means 8 for agitating the contents in the treatment tank 2, ventilation means 22, 23, 25 which discharge gas in the tank 2 outside and introduce fresh air into the tank 2 from the outside, and a heat retaining means for keeping the inside of the tank 2 at a temperature suitable for the fermentation treatment of garbage are installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garbage disposal machine for reducing the amount of garbage generated from ordinary households or restaurants by fermenting and decomposing the garbage with aerobic microorganisms.

[0002]

2. Description of the Related Art As a prior art example of this type of garbage disposal machine, there is, for example, one disclosed in Japanese Patent Application Laid-Open No. 7-132274. Culture substrate as a growth microbial bed for microorganisms
Neutral and porous sawdust, hulls, bean husks and the like are used.

Japanese Patent Application Laid-Open No. 8-281243 discloses that a decomposition promoter (enzyme source) is used at an early stage of fermentation decomposition using peat moss as a culture substrate without a stirring means, a ventilation means, and a heat retaining means. Japanese Patent Application Laid-Open No. Hei 8-168744 discloses a method using peat moss as a culture substrate without ventilating means.

Further, Japanese Patent Application Laid-Open No. Hei 7-136628 discloses an adsorbent having a honeycomb-shaped ventilation path in a duct for discharging gas from a primary treatment tank in order to prevent odor from leaking out of the apparatus. A device provided with a deodorizing device comprising the above catalyst is disclosed.

[0005]

However, the above-mentioned conventional garbage processing machine has the following problems. In other words, in the case of using a neutral culture substrate (sawdust, firgrass, bean husk, etc.), the culture substrate is decomposed together with garbage by microorganisms growing in the atmosphere, and an alkaline gas (ammonia, etc.) is generated. It smells bad.

[0006] Also, those using peat moss or a culture substrate subjected to acidification treatment become anaerobic without the stirring means and ventilation means, so that aerobic bacteria cannot grow and odor is generated during decomposition. . Further, even when the enzyme source is supplied, the anaerobic bacteria grow and generate odor. In addition, there is also a problem that the cost and labor are required when the enzyme is introduced.

[0007] In addition, the garbage is decomposed by microorganisms all the time, and the odor is constantly generated, so that a large amount of odor is generated and a large amount of water is generated. In such a case, the catalyst becomes saturated in a short time, the catalyst must be heated frequently to separate odor molecules, and power consumption increases. Further, since the separated odor molecules are discharged outside the apparatus, there is no need for deodorization.

An object of the present invention is to provide a garbage processing machine which solves the above-mentioned problems.

[0009]

Means for Solving the Problems In order to achieve the above-mentioned object, the invention of claim 1 provides garbage in a treatment tank containing aerobic microorganisms and a culture substrate for the microorganisms. In a garbage processing machine configured to ferment and decompose garbage by the microorganisms, using peat moss as the culture substrate, stirring means for stirring and mixing the contents in the processing tank, and gas in the processing tank. Ventilation means for discharging fresh air into the processing tank from the outside and introducing heat from outside to the processing tank, and heat retaining means for maintaining the inside of the processing tank at a temperature suitable for fermentation and decomposition of garbage are provided. It is.

Further, according to the invention of claim 2, garbage is put into a treatment tank containing aerobic microorganisms and a culture substrate of the microorganisms, and the garbage is fermented and decomposed by the microorganisms. In the garbage disposer, using acidified sawdust and peaches as the culture substrate, stirring means for stirring and mixing the contents in the treatment tank, and discharging the gas in the treatment tank to the outside Ventilation means for taking in fresh air from outside into the processing tank, and heat retaining means for keeping the inside of the processing tank at a temperature suitable for fermentation and decomposition of garbage are provided.

According to the first and second aspects of the present invention, it is not necessary to add a promoter such as an enzyme bacterium, and it becomes an aerobic state in an acidic atmosphere, and is composed of bacteria, Bacillus subtilis, mold, yeast, lactic acid bacteria and the like. A suitable growth environment can be created for fungi such as mold fungi that decompose garbage without giving off odors among the microorganisms.

Further, the invention according to claim 3 is the garbage disposer according to claim 1 or 2, wherein the processing tank comprises a primary processing tank and a secondary processing tank communicating with a lower end of the primary processing tank. The secondary processing tank is configured to be airtight, one end of an air supply pipe is connected to one side of the secondary processing tank, and gas suction is performed on the other side of the secondary processing tank. One end of the pipe is connected for communication, the other end of the gas suction pipe is connected for communication to an exhaust duct having an exhaust fan, and an odor adsorbent or a low-temperature oxidation catalyst and a high-temperature oxidation catalyst are provided between the gas suction pipe and the exhaust duct. A deodorizing means having a catalyst is provided, and the amount of air supplied into the secondary processing tank through the air supply pipe and the amount of gas discharged from the secondary processing tank through the gas suction pipe are provided. 0.5 to 2 liters It is characterized in that constructed as divided become.

According to the above construction, the air required for the maturation process is supplied into the secondary processing tank via the air supply pipe, and the gas generated in the secondary processing tank is supplied to the deodorizing means via the gas suction pipe. The deodorized gas is discharged to the outside through an exhaust duct, but the minimum amount of air required for the ripe treatment is supplied into the secondary treatment tank, and the generated gas discharged from the secondary treatment tank is discharged. Since the amount is the minimum, the amount of gas does not exceed the deodorizing ability of the odor adsorbent or the low-temperature oxidation catalyst, and the gas can be reliably deodorized.

According to a fourth aspect of the present invention, in the garbage disposer according to the third aspect, the deodorizing means comprises a cylindrical inner case made of a material having good thermal conductivity and having openings at both end faces; An outer case that covers the inner case such that a gap through which gas passes is formed between the outer peripheral surface and at least one end surface of the inner case, and an opening at the other end surface of the inner case communicates with the exhaust duct. A low-temperature oxidation catalyst or odor adsorbent disposed on one end surface side, and disposed between the low-temperature oxidation catalyst or odor adsorbent and the other end surface inside the inner case. And a heating means for heating the high-temperature oxidation catalyst, wherein the gas suction pipe is connected to the gap on the other end surface side of the inner case. When Is shall.

According to the above construction, the gas is heated by the heating means while passing through the gap between the inner case and the outer case, and the heated gas heats the odor adsorbent or the low-temperature oxidation catalyst. The odor molecules separate and the odor adsorbent or low temperature oxidation catalyst is regenerated. Then, the odor separated from the odor adsorbent or the low-temperature oxidation catalyst is deodorized by the high-temperature oxidation catalyst.

According to a fifth aspect of the present invention, in the garbage disposer according to the third or fourth aspect, the stirring means is rotatably supported by the first stirring blade in the primary processing tank. Body, a second stirring blade rotatably supported in the secondary processing tank, a one-way rotation bearing attached to the rotation shaft of the first and second stirring blades, Rotation driving means for rotating the first and second stirring blades via a one-way rotation bearing, and when the rotation driving means is driven, only one of the first and second stirring blades is driven. When the rotating direction of the rotation drive means is changed over, only one of the first and second stirring blades is rotated.

According to the above configuration, it is possible to selectively stir each processing tank by switching the rotation direction of one rotation driving unit.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cutaway front view of a main part of a garbage disposer according to an embodiment of the present invention, and FIG.
FIG. 3 is an axial cross-sectional view of a deodorizing apparatus, FIG. 4 is an explanatory view showing a region where microorganisms which do not emit a bad odor applied to the present invention are inhabited, and FIG. 1 is an enlarged view of a main part, and FIG. 6 is a right side view of FIG.

In FIG. 1, reference numeral 1 denotes a main body, which includes a primary processing tank 2 and a secondary processing tank 3 communicating with a lower end of the primary processing tank 2. Reference numeral 4 denotes a lid which is attached to the upper surface of the main body 1 so as to be opened and closed manually, and opens and closes the upper surface of the primary processing tank 2. Between the primary processing tank 2 and the secondary processing tank 3, there is provided a partition plate 5 for manually opening and closing a communication path between the primary processing tank 2 and the secondary processing tank 3. Is closed, the inside of the secondary processing tank 3 is made airtight. As shown in FIG. 2, the lower end of the secondary treatment tank 3 communicates with the inside of a take-out case 6 for taking out fully-ripened garbage, and the take-out case 6 is manually moved in the horizontal direction of FIG. It is designed to slide and be attached to and detached from the main body 1.

The primary treatment tank 2 contains a highly acidic culture substrate 7 made of natural peat moss or acidified sawdust and peaches. Reference numeral 8 denotes a first stirring blade provided in the primary processing tank 2, and a rotary shaft 10 rotatably supported by bearings 9, 9 attached to left and right side surfaces of the primary processing tank 2, Axis 1
0 on the outer peripheral surface at substantially equal intervals in the axial direction,
It comprises a plurality of stirring blades 11 projecting radially.

The stirring blade 11 is a plate-like member having a cross-section of the shape of "C", and has a larger stirring area than a round bar-shaped stirring blade. The internal gas can be sufficiently discharged and fresh air can be sufficiently injected into the culture substrate 7. Note that the shape of the stirring blade 11 is not limited to this, and may have a similar wide stirring area, for example, a prismatic shape or a rectangular plate shape. When the stirring surface is parallel to the rotation direction, the stirring effect is low, and when the stirring surface is perpendicular to the rotation direction, the resistance at the time of rotation increases, so that the stirring surface is inclined with respect to the rotation direction. Is preferred.

At one end of the rotating shaft 10 is mounted a one-way rotating bearing 12 for transmitting only one-directional rotating force. The one-way rotating bearing 12 is fixed to a large gear 13.
The large gear 13 is connected to a reduction mechanism 15 composed of a plurality of gears via an intermediate gear 14, and the reduction mechanism 15 is connected to a rotation shaft of a stirring motor 16. When the one-way rotating bearing 12 drives the stirring motor 16 in the direction in which the rotating shaft 10 rotates, the first stirring blade body 8 rotates,
When the stirring motor 16 is driven in the reverse direction, the one-way rotating bearing 12 idles and the first stirring blade 8 does not rotate.

Reference numeral 17 denotes a second stirring blade provided in the secondary processing tank 3, and a rotary shaft rotatably supported by bearings 18, 18 attached to left and right side surfaces of the secondary processing tank 3. 19, and a plurality of radially protruding stirring blades 50 provided on the outer peripheral surface of the rotating shaft 19 at substantially equal intervals in the axial direction.

At one end of the rotating shaft 19, a one-way rotating bearing 20 equivalent to the one-way rotating bearing 12 is mounted in the opposite direction, and the one-way rotating bearing 20 is fixed to a large gear 21. Reference numeral 21 is connected to the reduction mechanism 15 via the intermediate gear 14. The stirring motor 16 is connected to the rotating shaft 1
When the stirrer motor 0 is driven in a non-rotating direction, the second stirring blade body 17 rotates. When the stirring motor 16 is driven in the reverse direction, the one-way rotating bearing 12 idles and the first stirring blade body 8 does not rotate.

As shown in FIG. 2, an exhaust port 22 is provided at the upper part of the side wall of the primary processing tank 2, and an exhaust duct 23 is connected to the exhaust port 22. The exhaust duct 23 is connected to an exhaust fan 24. Have. When the discharge fan 24 is driven, the gas generated in the primary processing tank 2 is discharged to the outside via the exhaust duct 23. An air inlet 25 for taking in air from outside is provided around the inlets of the other three side walls of the primary processing tank 2, and a diffuser (not shown) attached to the tip thereof is provided with a culture medium. It is close to the upper surface of the material 7. As described above, the air outlet position of the air inlet 25 is set at a low position close to the surface of the substrate 12, and the position of the exhaust port 22 is set at a high position away from the surface of the substrate 12. The gas inside the material 7 can be efficiently discharged.

Further, heaters 26 and 27 are attached to the outer surfaces of the primary processing tank 2 and the secondary processing tank 3, and a temperature sensor (not shown) detects the outside air temperature and the decomposition temperature inside the processing tank. A control circuit (not shown) repeatedly turns on and off the heaters 26 and 27 based on the output signal of the temperature sensor to keep the decomposition environment temperature inside the processing tank constant. A water storage tank 28 is provided behind the primary processing tank 2 so that water can be supplied to the secondary processing tank 3 as needed. Oxygen necessary for the secondary treatment (ripening treatment) is supplied at one end by an air supply pipe 29 attached to the side surface of the secondary treatment tank 3. 0.
5 to 2.0 liters / minute of air is supplied by suction.

As shown in FIG. 1, one end of a gas suction pipe 30 is attached to a side of the secondary processing tank 3 opposite to the side to which one end of the air supply pipe 29 is attached. The other end is connected to the exhaust duct 23 via the deodorizer 31. Exhaust duct 23
When the discharge fan 24 is driven, the required amount of air flows into the secondary processing tank 3 due to the negative pressure inside the exhaust duct 23.

As shown in FIG. 3, the deodorizer 31 has a cylindrical catalyst storage case 32 at the center. The catalyst storage case 32 is made of a material having good thermal conductivity, and has openings 33 and 34 on both end surfaces. Inside the catalyst storage case 32, an odor adsorbent (or low-temperature oxidation catalyst) 36 fixed on one end face side via a spacer 35, and fixed via a spacer 37 between this and the other end face. High temperature oxidation catalyst 38 and odor adsorbent (or low temperature oxidation catalyst) 3
Sheath heater 3 disposed between the first and second high-temperature oxidation catalysts 38
9 are provided. A flange 40 is formed around the other opening 34 of the catalyst storage case 32.

Outside the catalyst storage case 32, a bottomed cylindrical heat exchange case 4 arranged coaxially with the catalyst storage case 32.
1 and a gap 42 is formed between the outer peripheral surface of the catalyst storage case 32 and one end surface. The heat exchange case 41 is made of a material having good thermal conductivity, and a flange 44 is formed around the opening 43. The flange 44 is closed by a lid 45 that seals the opening 43.
It is in a state of being sandwiched between the second flange portion 40 and
This keeps the inside of the heat exchange case 41 airtight. The outside of the heat exchange case 41 and the lid 45 is covered with a heat insulating material 46.

The lid 45 is provided with an opening 47. One end of an exhaust pipe 48 is connected to the opening 47,
The other end of the exhaust pipe 48 is connected to the exhaust duct 23. The opening 34 of the catalyst storage case 32 and the exhaust pipe 48 are in communication with each other by the exhaust pipe 48. Further, one end of the gas suction pipe 30 is connected to the inner case 32.
Is connected to the gap 42 on the side of the other end face.

Next, the operation of the garbage disposer configured as described above will be described. Aerobic microorganism and its culture substrate 7
The garbage is put into the primary treatment tank 2 containing the garbage. During processing of garbage, the exhaust fan 24 is driven, and the exhaust fan 24 takes in air into the primary processing tank 2 through the air inlet 25 and exhausts gas in the primary processing tank 2 into an exhaust duct. The air is exhausted outside through an exhaust port 23 and an exhaust port 22. Then, the stirring motor 16 is driven every 20 to 60 minutes for 1 to 3 minutes, and the contents in the primary processing tank 2 are stirred by the first stirring blade 8.

As a result, fresh air is introduced into the culture substrate 7 at short intervals, so that the culture substrate 7 becomes aerobic in an acidic atmosphere, and mold species such as filamentous fungi as shown in FIG. An environment in which aerobic microorganisms easily proliferate can be created, and garbage can be decomposed without giving off odor. Therefore, a deodorizer is not required for the gas generated in the primary processing tank 2, and this gas is directly discharged to the outside via the exhaust port 22.

When the fermentation decomposition treatment is continued for a long time, the decomposition ability is lowered due to the deterioration of the culture substrate 7 and the increase of the residue.
At that time, the partition plate 5 is manually opened and the deteriorated culture substrate 7 is dropped into the secondary treatment tank 3. And the primary treatment tank 2
, A new culture substrate 7 is charged, and the fermentation decomposition treatment is restarted.

A certain amount of water is supplied to the culture substrate 7 dropped into the secondary treatment tank 3 by the water storage tank 28, and the second stirring blade 17 is rotated and mixed by stirring. 0.5 to 2.0 liters / minute of air is supplied from the air supply pipe 29, so that the minimum oxygen required for fermentation is supplied to the mixture, and the mixture is decomposed to generate gas. The gas is sucked out of the secondary processing tank 3 through the gas suction pipe 30 and flows into the deodorizer 31.

The gas that has flowed into the deodorizer 31 passes through the gap 42, flows into the catalyst housing case 32 through the opening 33, and is deodorized by the odor adsorbent (or low-temperature oxidation catalyst) 36. Thereafter, the gas flows into the exhaust pipe 48 through the high-temperature oxidation catalyst 38, flows into the exhaust duct 23 through the exhaust pipe 48, and is discharged outside by the discharge fan 24 together with the gas discharged from the primary treatment tank 2. .

As long as the ripeness treatment is not hindered, it is preferable to avoid stirring which generates a large amount of odor. As a result of experiments, it has been found that fermentation decomposition continues at a high temperature for 1 to 4 days after water is supplied and stirred. The lowering of the decomposition temperature indicates when stirring is required. Further, it is known that the odor adsorbent (or the low-temperature oxidation catalyst) 36 becomes saturated in 1 to 4 days when the gas at the above flow rate is constantly circulated, and it is necessary to separate odor molecules by heating. .

In the present embodiment, the temperature sensor detects the decomposition temperature in the secondary processing tank 3, and when the temperature falls below a predetermined value, the control circuit supplies electricity to the sheath heater 39 to supply the odor adsorbent (or low temperature). The oxidation catalyst 36 is regenerated, and the stirring motor 16 is driven to rotate the second stirring blade 17 to perform stirring. Further, even when the decomposition temperature does not become lower than the predetermined value, the control circuit operates in the range of 1-4.
The regeneration process and the stirring are forcibly performed every day.

By energizing the sheath heater 39,
When the catalyst storage case 32 is heated, the gas flowing into the gap 42 through the gas suction pipe 30
And heats the odor adsorbent (or low-temperature oxidation catalyst) 36. Thereby, the odor molecules are separated from the odor adsorbent (or the low-temperature oxidation catalyst) 36,
The odor molecules are decomposed by the high-temperature oxidation catalyst 38 together with the odor molecules generated in large amounts by the stirring, and the deodorized gas is cooled by the catalyst storage case 32 and the exhaust pipe 4
8 and discharged outside through the exhaust duct 23 and the exhaust port 22.

As described above, stirring for generating a large amount of odor is performed only when the decomposition temperature is lowered or every 1 to 4 days.
Otherwise, deodorization is performed only by the odor adsorbent (or low-temperature oxidation catalyst) 36, which is effective in deodorization and can reduce power consumption.

It should be noted that the present invention is not limited to the above embodiment, but can be embodied in other forms.

[0041]

As described above, the garbage disposer according to the first aspect uses a peat moss having a high acidity as a culture substrate, and a stirring means for stirring and mixing the contents in the treatment tank. By providing ventilation means for discharging the gas outside and taking in fresh air from outside into the treatment tank, and heat retaining means for keeping the inside of the treatment tank at a temperature suitable for fermentation and decomposition of garbage, the enzyme There is no need to add promoters such as bacteria, and it becomes an aerobic state in an acidic atmosphere and decomposes garbage in bacteria, Bacillus subtilis, mold, yeast, lactic acid bacteria and other microorganisms without producing a bad smell. Since a suitable growth environment can be created for fungi such as mold fungi, raw garbage can be decomposed without producing a bad odor.

The garbage disposer according to the second aspect uses, as a culture substrate, a sawdust or a Japanese peach that has been acidified with hydrochloric acid or the like, and is brought into an aerobic state by a stirring means, a ventilation means and a heat retaining means. The garbage can be decomposed without producing a bad odor. Also, sawdust and firgrass have an advantage that they are easily available.

In the garbage disposer according to the third aspect, the minimum amount of air required for the ripeness treatment is supplied into the secondary treatment tank, and the amount of generated gas discharged is minimized, so that the generated gas can be reliably discharged. Can be deodorized. In addition, the power consumption is low and the ripeness processing can be performed reliably.

According to a fourth aspect of the present invention, a garbage disposer is heated by passing a gas through a gap between the inner case and the outer case, which is heated to a high temperature by a heating means for heating the high-temperature oxidation catalyst. Since the catalyst is heated to separate odor molecules, an electric heater for heating the odor adsorbent or the low-temperature oxidation catalyst is not required, and power consumption can be reduced. Further, since the odor generated by the regeneration of the odor adsorbent or the low-temperature oxidation catalyst is deodorized by the high-temperature oxidation catalyst, the odor does not leak to the outside.

In the garbage disposer according to the fifth aspect, the first stirring blade and the second stirring blade are selectively driven to rotate by one motor, so that the cost is reduced and the apparatus is reduced. However, the size is reduced, which is advantageous in terms of space.

[Brief description of the drawings]

FIG. 1 is a fragmentary front view of a main part of a garbage disposal machine according to an embodiment of the present invention.

FIG. 2 is a cutaway side view of a main part of the garbage disposal machine of FIG.

FIG. 3 is an axial sectional view of the deodorizing device.

FIG. 4 is an explanatory diagram showing a region in which microorganisms which do not emit a bad odor and which are applied to the present invention live.

FIG. 5 is an enlarged view of a main part of FIG. 1;

6 is a right side view of FIG.

[Explanation of symbols]

 2 Primary treatment tank 3 Secondary treatment tank 7 Culture substrate 8 First stirring blade body 12, 20 One-way rotating bearing 16 Stirring motor (rotation drive means) 17 Second stirring blade body 22 Exhaust port 23 Exhaust duct 24 Exhaust Fan 25 Air inlet 26, 27 Heater (heat retaining means) 29 Air supply pipe 30 Gas suction pipe 31 Deodorizer (Deodorizing means) 32 Catalyst storage case (Inner case) 36 Odor adsorbent (or low-temperature oxidation catalyst) 38 High-temperature oxidation catalyst 39 sheathed heater (heating means) 41 heat exchange case (outer case) 48 exhaust pipe

Claims (5)

[Claims] 1. A garbage disposal machine in which garbage is charged into a treatment tank containing aerobic microorganisms and a culture substrate of the microorganisms, and the garbage is fermented and decomposed by the microorganisms. Using peat moss as a culture substrate, stirring means for stirring and mixing the contents in the processing tank, and ventilation means for discharging gas in the processing tank to the outside and taking fresh air from the outside into the processing tank And a heat retaining means for maintaining the inside of the treatment tank at a temperature suitable for the fermentation decomposition treatment of garbage. 2. A garbage disposal machine in which garbage is put into a treatment tank containing aerobic microorganisms and a culture substrate of the microorganisms, and the garbage is subjected to fermentation decomposition treatment by the microorganisms. Using acidified sawdust and firgar as a culture substrate, stirring means for stirring and mixing the contents in the processing tank, and discharging the gas in the processing tank to the outside and into the processing tank from the outside A garbage disposal machine, comprising: a ventilation means for taking in fresh air; and a heat retaining means for keeping the inside of the treatment tank at a temperature suitable for fermentation and decomposition of garbage. 3. The processing tank comprises a primary processing tank and a secondary processing tank communicating with a lower end of the primary processing tank, wherein the secondary processing tank is configured to be able to be in an airtight state. One end of an air supply pipe was communicatively connected to one side of the processing tank, one end of a gas suction pipe was communicatively connected to the other side of the secondary processing tank, and the other end of the gas suction pipe was provided with an exhaust fan. Deodorizing means connected to an exhaust duct and provided with an odor adsorbent or a low-temperature oxidation catalyst and a high-temperature oxidation catalyst is provided between the gas suction pipe and the exhaust duct,
The amount of air supplied into the secondary processing tank through the air supply pipe and the amount of gas discharged from the secondary processing tank through the gas suction pipe are 0.5 to 2 liter /
The garbage disposal machine according to claim 1, wherein the garbage disposal machine is configured to be divided into two parts. 4. The deodorizing means comprises: a cylindrical inner case made of a material having good thermal conductivity and having openings at both end surfaces;
An outer case that covers the inner case such that a gap through which gas passes is formed between the outer peripheral surface and at least one end surface of the inner case, and an opening at the other end surface of the inner case communicates with the exhaust duct. A low-temperature oxidation catalyst or odor adsorbent disposed on one end surface side, and disposed between the low-temperature oxidation catalyst or odor adsorbent and the other end surface inside the inner case. And a heating means for heating the high-temperature oxidation catalyst, wherein the gas suction pipe is connected to the gap on the other end surface side of the inner case. The garbage disposal machine according to claim 3, wherein: 5. A first stirring blade body rotatably supported in the primary processing tank and a second stirring blade rotatably supported in the secondary processing tank. The body and the first
And a one-way rotation bearing attached to the rotation shaft of the second stirring blade body, and rotation driving means for rotating the first and second stirring blade bodies via these one-way rotation bearings, When the rotation driving unit is driven, only one of the first and second stirring blades rotates, and when the rotation direction of the rotation driving unit is switched, only the other of the first and second stirring blades is changed. The garbage disposal machine according to claim 3 or 4, wherein the garbage is rotated.