JP2002011439A - Garbage treatment device and shredding blade for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a garbage treatment device which, when garbage containing leftover food or the like is treated, is capable of surely and rapidly subjecting the garbage to drying and granulation, and even when the dry granulated garbage is subjected to biological treatment after the drying/granulation, enables stable performance of such biological treatment of the dry granulated garbage. SOLUTION: This treatment vessel is provided with a closable vessel 1, a garbage charge port 2 formed at one end 1a in the longitudinal direction of the vessel 1, a shredding blade 4 placed inside the vessel 1 in its intermediate section in the longitudinal direction, across the cross-section of the inside of the vessel 1, and an air discharge/circulation passage 7 which is communicated with the inside of the vessel 1 and has, in the intermediate section, a deodorization heater, wherein: the vessel 1 is capable of being subjected to reciprocating swing movement around a shaft 12 orthogonally intersecting the longitudinal direction of the vessel 1, in the range from the position at which the garbage charge port 2 faces obliquely upward, to the position at which the garbage charge port 2 faces obliquely downward; and the shredding blade 4 is provided with at least two rotatable blade bodies 4b each of which extends from a central support 5a in the radial direction and is integrally fitted with an air blowing vane 4f, and plural air passages 4w each of which is formed on the rotary shaft side of the blade 4 and used for passing an air stream that is caused by such air blowing vanes 4f and flows inside the closed vessel 1 while turning back at the other end of the inside of the vessel 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garbage processing apparatus and a cutting blade for the garbage processing apparatus, and more particularly, to a garbage processing apparatus for making garbage mainly composed of garbage dry and granular, and a cutting blade suitable for the garbage processing apparatus. About.

[0002]

2. Description of the Related Art Conventionally, when dewatering or drying a waste containing a large amount of water, such as garbage of garbage, a method of drying by heating to a high temperature is generally adopted.

[0003]

However, in such a drying method, it is considered effective to agitate the garbage in order to improve the drying efficiency. However, the garbage includes starch such as garbage. When they are stirred, they become kneaded when kneaded, and become agglomerated, including other garbage,
There is a problem that the inner surface of the processing container sticks and the removal process becomes very troublesome.

[0004] In addition, when the lump of garbage sticking to the inner wall of the tank grows and grows, drying of the lump itself is further slowed down, and at the same time, the air circulation in the tank is hindered, and the drying efficiency of the entire tank decreases. was there.

[0005] Further, in order to avoid the above-mentioned garbage agglomeration, if the garbage is to be dried without stirring while being put into the garbage, the air flow inside the garbage is poor and the garbage is very dry. It takes a long time, and during that time, there is a problem that the garbage is putrefied and a bad smell is generated to deteriorate the surrounding environment.

Further, when such non-dehydrated or semi-dried garbage is directly supplied to a bio-processing apparatus, the moisture contained therein often affects the growth of microorganisms, and the bio-processing often fails. There was a problem.

Further, in such a garbage processing apparatus,
The garbage is cut into small pieces before or during drying to improve drying efficiency and facilitate post-processing, but this cut has a structure in which garbage is pressed against a comb-shaped knife. Such a structure is often used, and such a structure tends to cause a trouble such as clogging or sticking of garbage between the cutting blades, so that there is a problem that maintenance management becomes very troublesome.

[0008] The present invention has been made to solve the above-mentioned problems and to surely and quickly dry and granulate garbage containing garbage, so that the garbage can be stably performed even after bioprocessing. This was done as an issue.

[0009]

According to a first aspect of the present invention, there is provided a garbage disposal apparatus, wherein a garbage inlet is formed at one end in a length direction of a sealable container, and a long garbage inlet is provided inside the container. A cutting blade is provided in the middle of the container in the direction perpendicular to the cutting direction, and the container is provided with an exhaust / air circulation passage having a deodorizing heating section in communication with the inside of the container in the middle of the container. Around the axis perpendicular to the direction, the garbage input port is reciprocally swingable during a posture in which the garbage input port is directed obliquely downward from obliquely upward.

According to the above-mentioned invention, if the garbage is reciprocated in the container after the garbage is put into the container, the garbage reciprocates in the container in the longitudinal direction. As it moves across, it is finely cut by the cutting blade during the movement.

The cutting blade has a structure in which the blade is cut only by crossing the blade portion. For example, two types of blades in contact with each other, such as a clipper blade, alternately cross the garbage moving path in opposite directions. There are reciprocating structures and rotary blades.

[0012] The cut garbage is quickly dried by using the waste heat of the deodorizing heating unit while moving in the container. Further, the odor generated from the garbage is exhausted after being heated and deodorized in the heating unit for deodorization, so that the odor is not scattered around and the environment is not deteriorated.

According to a second aspect of the present invention, the cutting blade of the garbage processing apparatus of the first aspect is a rotary blade. By using a rotary blade, the driving structure of the cutting blade is simplified, and the size of the apparatus is further reduced.

According to a third aspect of the present invention, in the garbage disposal apparatus according to the first or second aspect, a garbage stirring blade is pivotally supported on one side of the container divided by the cutting blade, and the stirring blade is driven. A shaft is connected to the drive shaft of the cutting blade, and the stirring blade is driven via the drive shaft of the cutting blade.

[0015] The stirring blades can prevent garbage from adhering and solidifying on the inner surface of the container during the drying process, and the stirring blades can be driven by a kind of cutting blade, so that the size of the apparatus can be reduced. And cost reduction is achieved.

According to a fourth aspect of the present invention, there is provided a cutting blade for a garbage disposal apparatus, wherein at least two blades are extended from a central support portion to a diameter rotatable in a container of the garbage disposal apparatus according to the first aspect. A blade for blowing air is provided integrally with the blade body, and a ventilation portion which is formed by the blade for blowing air and passes an air flow which is turned at the other end in the closed container and flows therethrough is provided on the rotating shaft side of the blade body. .

According to the cutting blade for the garbage disposal apparatus, the blade for cutting the garbage functions as it is as the blower fan in the container, so that the garbage can be dried efficiently with less power. In addition, since the air flow can escape in the direction of the opposite surface of the cutting blade by the ventilation portion, circulating air flows having different flow directions between the outer peripheral portion and the inner peripheral portion can be formed in the container, and the drying efficiency can be improved.

According to a fifth aspect of the present invention, there is provided a cutting blade for a garbage disposal apparatus, wherein the cutting blade is supported on the same axis and the rotation direction is reversed. It is something that is.

Therefore, the garbage passing through the cutting blade is reliably cut so as to be sandwiched between the two rotating blades whose rotation directions are reversed. In addition, garbage sandwiched between the two rotating blades is surely cut even if the rotating blades rotate slowly.

According to a sixth aspect of the present invention, there is provided a cutting blade for a garbage disposal apparatus according to the fifth aspect of the present invention. A blower is provided only at the tip, and the blower is not provided at the root of the rotary blade.

Therefore, since the root portion of the rotary blade does not have a blowing function, the air flow turned back inside the container can pass through the portion without the blowing blades to the back surface, and can be circulated in the closed container. Is generated.

According to a seventh aspect of the present invention, there is provided a cutting blade for a garbage disposal apparatus, wherein the cutting blade for the garbage disposal apparatus according to the sixth aspect rotates in reverse with the rotating blade provided with the blower blade. A blower for blowing air in a direction opposite to the blower is provided at a root portion of the two rotary blades.

Accordingly, the airflow can be positively sent out from the blades in the opposite direction toward the back surface of the blade body, and the airflow in the container can be positively circulated.

[0024]

Next, an embodiment of the present invention will be described. 1 is a cross-sectional view of the garbage processing apparatus according to the embodiment, FIG. 2 is a cutaway side view of a main part, FIG.
FIG. 4 is a front view seen from the right side of FIG.

In FIG. 1, reference numeral 1 denotes a sealable container formed of a steel plate or a stainless steel plate. This container 1
In the illustrated example, is a cylindrical body having a longitudinal axis as a central axis, and is made of a steel plate whose inner surface is subjected to Teflon (registered trademark) processing or the like. In addition, in the case of a small device such as a container 1 having a capacity of 100 kg or less for food waste and usually about 50 kg, the container 1 is made of a Teflon-treated steel plate. Is done.

A garbage inlet 2 is formed at one end 1a of the container 1 in the axial direction. In the case of the illustrated example, an opening / closing lid 3 which can be opened / closed by hinge-joining one side is attached to the input port 2, and a packing 3 a is attached to an inner surface of the opening / closing lid 3. Flange 3f
5 and a lock nut 3c rotatably supported by a hinge 3b as shown in FIG.

Inside the container 1, a cutting blade 4 is provided at an intermediate portion in the longitudinal direction so as to cross the cross section of the container 1. This cutting blade 4 is a rotary blade made of steel, carbon steel, special steel, cemented carbide, ceramic or the like and having excellent hardness and strength. As shown in FIG. 4b (four in the illustrated example) are formed to extend in the radial direction. Here, a straight blade that extends straight in the radial direction is shown as the rotary blades 4b, but the present invention is not limited to this, and a blade that is inclined in the rotation direction or a blade whose tip line is curved in a spiral shape may be used. .

The rotary blade 4 can be driven by an electric motor 5 as shown in FIG. 1, and a disk 4a is coaxially fixed to a shaft 5a. The electric motor 5 is housed in a casing 1d coaxially arranged in the container 1, and is protected from garbage inside.

The cutting blade 4 is a single rotary blade as shown in FIG. 6 (a), and two blades 4, 4 which rotate in opposite directions as shown in FIG. 7 (a). May be coaxially supported and the blades 4b and 4b may forcibly cut the foreign objects.

In this case, the garbage sandwiched between the two rotating blades 4b, 4b is reliably cut, and for example, when the number of rotating blades 4 is one, the number of rotations is as high as 300 to 500 RPM. Whereas two blades require 5
Cutting can be sufficiently performed even at 0 to 100 RPM, and energy saving of power can be achieved.

FIG. 8 is a sectional view of a gear mechanism for rotating the two blades 4 in the normal and reverse directions. The gear mechanism engages with the external gear 4c fixed to the center shaft 5a and the gear 4c. A small gear 4d, which is rotatably supported by the casing 1d;
d and an internal gear 4e meshing with the gear 4d, one rotating blade 4 is attached to the external gear 4c, the other rotating blade 4 is attached to the internal gear 4e, and one gear is When the clockwise rotation is performed, the other is simultaneously rotated in the reverse direction.

Further, the two blades 4 shown in FIG.
One of the four may be a fixed blade. In this case, since the forward / reverse rotation drive device is not required, the drive mechanism of the rotary blade is simplified.

The rotating blades 4 are provided with blowing blades 4f... 4f so that an airflow in a certain direction is generated in the container 1 regardless of the rotation of the rotating blades 4. Moreover, in order to generate an air current in the container 1 for each of the cutting blades 4,
As shown in FIG. 6 (a), ventilation holes 4w... 4w are provided at the center of the rotary blade as ventilation parts, for example, as shown by an arrow A in FIG. At this time, the air on one end side of the container 1 has the ventilation hole 4w at the center.
To the other end.

It should be noted that, instead of the ventilation holes 4w, FIG.
As partially shown in FIG. 2, the blade 4f may be provided only at the tip 4g of the rotary blade 4, and the rotary blade 4 may be configured without providing a fan as a ventilation portion at the root 4h of the rotary blade 4.

Root portion 4 without blower blade 4f serving as a ventilation portion
In h, since no airflow is generated, the airflow can escape to the back surface of the rotary blade 4, thereby making it possible to generate a circulating flow in the container.

Further, as shown in FIG. 6 (c), a blower blade 4f whose direction is opposite to that of the tip portion 4g may be provided at the root portion 4h serving as the ventilation portion. Air flow can be generated, and a more reliable circulation flow can be generated.

When the cutting blade 4 has two blades as shown in FIG. 7A, one of the rotary blades 4 has a structure as shown in FIG. 6B. In addition, FIG.
As shown in (b), a wing 4f for generating a front-side airflow on one of the rotary blades 4 and a wing 4f for generating an airflow to the back-side may be formed at a root portion 4g on the other side.

In FIGS. 6 and 7, a portion indicated by 4J in the drawings indicates a shaft hole through which the motor shaft 5a is fixed, and a shaft hole with a key groove 5b. Next, a stirring blade 6 is provided inside the container 1 on the food waste input side as shown in the cross section in the right half of FIG. 1 and FIG. 9 so that the input food waste does not stop at one place. Have been.

The stirring blade 6 is supported by a cylindrical shaft 6 a on one side of the container 1 partitioned by the rotary blade 4, that is, on the side provided with the opening / closing lid 3. The rotating shaft 6 is set so that the gap with the inner surface of the container 1 always becomes a constant narrow gap.
a is set to be the center of the container 1.

In addition, the stirring blade 6 may be driven by an independent electric motor, or may be rotated by the rotating shaft 5a of the rotary blade 4 as shown in FIG.

That is, reference numeral 8 denotes a gear transmission for connecting the shaft 5a of the rotary blade 4 and the shaft 6a of the stirring blade 6, and when the rotation speed of the rotary blade 4 is high, the rotation speed is reduced and transmitted to the stirring blade. It has been like that. For example, when the rotary blade 4 is set to 360 RPM or the like, the stirring blade is set to 10 to 50 RPM.

The container 1 is located at the center of the rotary blade 4 and the stirring blade 6.
In order to align the centers of the containers 1, the container 1 in the illustrated example has an axis 5 at the front end and the rear end of the container 1 partitioned by the rotary blade 4.
a and 6a are shifted.

Next, as shown in FIGS. 2 to 4, the container 1 is entirely supported by a shaft 12 orthogonal to the longitudinal direction of the container 1 so as to be swingable, and a driving device provided on a bearing 13. 1
4, the end provided with the opening / closing lid 3 of the container becomes a horizontal posture from an obliquely upper position as shown by a two-dot chain line in FIG. Have been to be.

As the driving device 14, a geared motor including an electric motor 14 that rotates forward and backward as shown by a virtual line and a gear that transmits rotation to the shaft 12 is used. The container 1 is provided with a heating device 7 that communicates from the rear end side to the front end side.

The heating device 7 has an outlet pipe 7a opened to the rear end side of the container 1, a heating unit having a heating device 7b capable of heating air to 800 to 900 ° C., and discharges the heated and deodorized air to the outside. Heating device 7b
As such, an electric heater, a gas burner, an oil-fired burner, and the like are used.

The illustrated example shows a case where an electric heater is used, in which a heating wire such as a nichrome wire or a Kanthal wire is arranged at the center of the tube 7d of the heating section. The radiation fins 7e... 7e are provided on the outer surface of the tube 7d of the heating section.
This pipe 7d is a double pipe further surrounded by an outer pipe 7f,
An outer pipe 7f is connected to an air outlet pipe 7p from a container via a blower fan 9, and the other end is connected to the container 1 via a heated air supply pipe 7q.

An outside air inlet 10 is attached to the outlet pipe 7p via a switching valve 11 such as a two-way valve so that the outside air can be heated and supplied into the container 1 as required. I have.

4 and 10, reference numeral 16 denotes a housing for housing the whole container. The outer wall is formed of a slate plate or the like, and has an opening / closing door 16a, a ventilation fan 16b, a vent 16c, and the like.

Although not shown in the drawings, the garbage processing apparatus is provided with necessary places, for example, a temperature sensor and a humidity sensor inside the container, and a tilt sensor on the outer surface of the container. A control device is provided for automatically controlling the inclination posture, inclination speed, heating temperature, exhaust, air supply, etc. of the container based on the detection information.

Next, the operation of the garbage processing apparatus of the present invention will be described. FIGS. 11 to 15 are explanatory diagrams showing a use state. First, as shown in FIG. 11, the posture of the container 1 is controlled so that the input port 2 of the container 1 faces obliquely upward, and the garbage 20 is input by opening the lid 3.

The lid 3 is closed and tightened, the heating device 7 is operated, and the inside of the tube 7d of the heating device 7 is heated. At the same time, the air blower fan 9 is driven and the air in the container 1 is removed from the extraction tube 7p by the heating device 7. It heats and circulates again into the container 1 from the supply pipe 7q to heat the air in the container 1.

At this time, the exhaust pipe 7c is closed. Then, the geared motor 14 is driven to slowly return the container 1 to a horizontal position as shown in FIG.
As shown in (2), the posture of the container 1 is changed to the downward position, and the garbage 20 inside the container 1 is once biased toward the side where the lid 3 is located.

This is because the solid matter contained in the garbage is turned by the rotary blade 4.
This is to prevent the rotary blade 4 from being hardly activated by being caught on the portion. Next, the rotary blade 4 is driven to rotate, and the geared motor 14 is driven to slowly swing the entire container 1 so as to face obliquely upward, thereby changing the posture as shown in FIGS. At this time, the number of rotations of the rotary blade 4 is 300 to 400 RPM when the rotary blade 4 is one, and 50 to 50 when the rotary blade 4 is two or one is a fixed blade.
100 RPM or the like.

At this time, the garbage 20 in the container 1
Moves to the other side with the change of the posture, but is cut when passing through the rotary blade 4 during the movement. At this time,
At the same time as the rotation of the rotary blade 4, the stirring blade 6 is also, for example, 10 to 50 R.
Since the garbage 20 having adhesiveness is slowly rotated by PM or the like, the garbage 20 does not stick to one place in the container 1 and smoothly moves down the container 1 along the slope. To go.

Further, since a constant narrow gap is always provided between the outer edge 6a of the stirring blade 6 and the inner surface of the container 1, foreign matter is less likely to be caught, and failure due to the clogging is prevented. When the container 1 is completely inclined upward, the swinging motion is repeated so that the container 1 is oriented downward as shown in FIG. 11 and the like, and from the one end in the container 1 with the swinging motion. The garbage 20 moving to the other end is finely cut by the rotary blade 4.

Further, the slowing speed of the rocking speed of the container is appropriately adjusted according to the state of the garbage in the container. Particularly, in the initial state where the garbage has a large amount of water, the rocking speed is reduced and the starch kneading is performed. Agglomeration due to mixing is prevented.

On the other hand, the inside of the container 1 is heated to about 80 to 90 ° C. by the waste heat of the heating device 7, and the garbage is quickly heated and dried by this temperature. The heating temperature is set to this level even at the upper limit. If the treatment is performed at an excessively high temperature, the garbage can be prevented from being carbonized, which is an adverse effect when performing a subsequent biotreatment.

When the temperature inside the container 1 exceeds 90 ° C., the switching valve 11 is automatically controlled or manually operated.
Is operated to open the outside air inlet 10 and introduce low-temperature outside air to adjust the temperature drop. For example, when the temperature falls below 80 ° C., the switching valve 11 is operated automatically or manually to operate the outside air inlet again. The passage is switched from 10 to the extraction pipe 7p, and the temperature inside the container 1 is increased.

On the other hand, water vapor generated by heating the inside of the container 1 is discharged to the outside from the exhaust pipe 7c,
Exposed to an extremely high temperature of 800 to 900 ° C., so that it is completely decomposed by heat and deodorized.

Since the rotating blade 4 generates an air current in the container 1, drying of the garbage is promoted by this air flow, and the garbage gradually becomes granular in combination with the cutting by the rotating blade 4. To dry.

The garbage is completely dried into granules by repeating the rocking several times. When the drying is completed in this way, the apparatus is stopped, the input port is controlled to face downward, and if the lid is opened, the garbage dried in a granular manner flows down into a carry-out container (not shown).

In addition, 50Kg of garbage generated after lunch is
When treated with the garbage disposal apparatus of the present invention having the container 1 having a capacity of 60 liters, it could be converted into dry granules in 6 to 7 hours, and the weight was reduced to about 20 kg by half.

Further, no off-flavor was emitted during the drying process.

[0064]

As described above, according to the garbage disposal apparatus of claim 1, the inputted garbage is finely cut by the cutting blade and dried when reciprocating in the container. At the end of the drying process, the garbage becomes granular and at the same time light in weight, making it very easy to handle as waste.

Further, in the case of bioprocessing thereafter, the garbage is not subjected to high temperature treatment to carbonize, so that bioprocessing can be stably performed. Further, the exhaust gas generated during the processing of garbage is discharged after the high heat treatment, so that it is deodorized and the surrounding environment can be prevented from deteriorating.

According to the garbage processing apparatus of the second aspect, in addition to the above-mentioned effects, the driving device and the structure of the cutting blade are simplified and have an effect. According to the third aspect of the present invention, in addition to the above effects, the garbage is agitated in the container, so that the garbage does not adhere to one place, and is reliably granulated during drying. Furthermore, a unique power is not required for the stirring blade, and economical driving can be performed.

According to the cutting blade for the garbage disposal apparatus of the fourth aspect, since the rotary blade is provided with the blowing blade and the ventilation part for circulation, the air circulation in the container can be performed simultaneously with the cutting of the garbage. The drying efficiency is improved.

According to the cutting blade for the garbage disposal apparatus of the fifth aspect, the garbage is cut by the double rotating blades that rotate in the forward and reverse directions, so that the garbage can be cut without fail and the rotation speed is low. Since it is good, the operation of the apparatus can be performed quietly, and the power can be reduced.

According to the cutting blades for the garbage disposal apparatus of the sixth and seventh aspects, the rotating blades are provided with blower blades to positively generate a circulating flow in the container. The circulating flow can be aggressively generated while efficiently cutting and drying the garbage.

[Brief description of the drawings]

FIG. 1 is a partially cutaway sectional view of an embodiment of a garbage disposal apparatus of the present invention.

FIG. 2 is a partially cutaway side view of the embodiment of the garbage disposal apparatus of the present invention.

FIG. 3 is a partially cutaway plan view of an embodiment of the garbage disposal apparatus of the present invention.

FIG. 4 is a front view as viewed from the right side of FIG. 2;

FIG. 5 is a sectional view of a main part showing a lock mechanism of the container lid.

FIG. 6 is a front view of a rotary blade of the garbage processing apparatus of the present invention, wherein (a) is an overall view of the rotary blade, and (b) and (c) are partial front views of other configuration examples.

FIGS. 7A and 7B are main part front views showing a state in which two rotary blades are used, FIG. 7A is an overall view, and FIG. 7B is a partial front view of another configuration example.

FIG. 8 is a cross-sectional view of the two rotary blades.

FIG. 9 is a sectional view of a stirring blade.

FIG. 10 is an overall explanatory diagram of an embodiment of the present invention.

FIG. 11 is an explanatory diagram of the operation of the embodiment of the present invention, when garbage is put into the hopper.

FIG. 12 is an operation explanatory view of the embodiment of the present invention.

FIG. 13 is an operation explanatory view of the embodiment of the present invention.

FIG. 14 is an operation explanatory view of the embodiment of the present invention.

FIG. 15 is an operation explanatory view of the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 1a One end of container in axial direction 2 Garbage inlet 3 Opening / closing lid 4 Cutting blade (rotary blade) 4f Blower blade 5 Electric motor 5a Shaft 6 Stirrer 7 Heating device 8 Gear transmission device 12 Shaft orthogonal to longitudinal direction

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F26B 9/06 B09B 3/00 303M F-term (Reference) 3L113 AA02 AC01 AC52 AC59 AC67 BA01 DA03 DA30 4D004 AA03 AC04 CA04 CA22 CA42 CA48 CB08 CB13 CB27 CB32 CB34 4D065 CA12 CB03 CC04 DD11 EA07 EB17 EC03 EC05 ED32

Claims (7)

[Claims] A garbage inlet is formed at one longitudinal end of a sealable container, and a cutting blade is provided inside the container at a middle portion in the longitudinal direction across a cross section of the container. The container is provided with an exhaust / air circulation passage having a deodorizing heating section in the middle in communication with the inside of the container, and further, the container is provided around the axis perpendicular to the longitudinal direction, and the garbage input port extends obliquely downward from obliquely upward. A garbage disposal device that can swing back and forth while facing. 2. The garbage processing apparatus according to claim 1, wherein the cutting blade of the garbage processing apparatus is a rotary blade. 3. The garbage disposal apparatus according to claim 1, wherein a garbage stirring blade is pivotally supported on one side of the container separated by the cutting blade, and a drive shaft of the cutting blade is a drive shaft of the stirring blade. A garbage disposal apparatus, wherein the stirring blade is driven through a drive shaft of the cutting blade. 4. A garbage disposal apparatus according to claim 1, wherein two or more blades are extended from the central support portion to a diameter which can be rotated in the container of the garbage disposal apparatus, and the blades are integrally provided with air blowing wings. A cutting blade for a garbage disposal device, wherein a ventilation portion for passing an airflow generated by the blower blades and turned around at the other end in the closed container is provided on the rotating shaft side of the blade body. 5. A cutting blade for a garbage processing apparatus according to claim 4, wherein the cutting blade is a double rotary blade supported on the same axis and rotated in the opposite direction. 6. A cutting blade for a garbage disposal apparatus according to claim 5, wherein a blowing blade is provided only at a tip portion of one of the two rotating blades whose rotation directions are reversed. A cutting blade for a garbage disposal device that is configured without providing a blower blade at the root of the blade. 7. A cutting blade for a garbage disposal apparatus according to claim 6, wherein said blowing blade is provided at a root portion of another rotating blade which rotates in reverse in contact with a rotating blade provided with a blowing blade. A cutting blade for a garbage disposal device that is provided with a blower blade that blows air in the opposite direction.