JPH08267036A - Crude refuse treating device - Google Patents

Abstract

PURPOSE: To make it possible to efficiently decompose crude refuse by forming an annular space in the bottom of a treating vessel contg. an agitating device, providing the inside of the space with an air feed port and forming an air blow-off port on the wall surface parting the space and the inside of the treating vessel. CONSTITUTION: A bulging part 15 is formed at the center of the bottom of a treating vessel 3. An annular space 22 is formed between an annular cover 21 mounted at its circumference and the bulging part 15. Air from an air feed port 24 is fed into the space 22 by an air pump 25 and is blown off into the treating vessel 3 from an air blow-off port 23. Air in the treating vessel 3 is discharged by a ventilator 28. Packing materials 29, such as sawdust, and crude refuse 30 in the treating vessel 3 are agitated by an agitating device 16. As a result, the packing materials 29 contg. air are agitated by the agitating device 16, by which the sufficient air is supplied over the entire part to the packing materials 29, by which the aerobic bacteria are vigorously activated and the crude refuse 30 is rapidly decomposed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food waste processing apparatus for processing food waste discharged at home to render it harmless.

[0002]

2. Description of the Related Art Generally, household waste is collected and treated collectively by local governments, but a large-scale treatment facility is required and the cost increases.
There are also bad odors and hygiene problems, which have become social problems.

[0003] Recently, therefore, there has been proposed a domestic food waste processing apparatus in which food waste is stored in a processing tank together with a filler, and the food waste is decomposed by the action of microorganisms.
Various products are commercially available.

For example, as an example thereof, Japanese Patent Laid-Open No. 5-221
The one described in Japanese Patent No. 766 is known. This product accommodates filler such as sawdust and raw garbage in the treatment tank, stirs the filler and raw garbage in the treatment tank with stirring blades, ferments the raw garbage to decompose it, and treats it. Is.

In this type of food waste treatment apparatus, when the food waste is decomposed by the action of microorganisms, it may be decomposed aerobically or anaerobically, but it has a high decomposition rate and a bad odor. In general, it is preferable to decompose aerobically in the presence of air, for example, due to the low generation of

[0006] Therefore, in the food waste processing device described in the above publication, a filler such as sawdust is put in the treatment tank, and a stirring device for the filler is attached to the treatment tank, and it is openably and closably mounted on the upper portion of the treatment tank. The lid is equipped with a motor that drives the stirring blades to rotate and an air pump that sends air into the processing tank, and agitates while blowing air into the filler to aerobically decompose the garbage and fill it. The air that has passed through the material is purified by the water removing means and the deodorizing means at the bottom.

[0007]

However, in this apparatus, since air is introduced from the upper part of the processing tank and air is aerobically decomposed by passing air into the filler, the air is supplied from the lower part of the processing tank. Since it is discharged, water removal means is required to dispose of the water generated by the decomposition of the food waste, which complicates the device.

Moreover, since it is necessary to form an exhaust port in the lower part of the processing tank, there is a possibility that the filling material or food waste may drop from the exhaust port or the exhaust port may be clogged with the filling material, which is prevented. Therefore, the structure of the exhaust port becomes complicated.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a food waste processing apparatus having a simple structure and capable of efficiently decomposing food waste.

[0010]

Therefore, the food waste processing apparatus of the present invention is provided with a stirrer which is rotated by a vertical rotary shaft in a cylindrical processing tank, and the filler and the food waste stored in the processing tank. While stirring with the stirring device, in a food waste processing device that aerobically decomposes food waste, an annular space is formed at the bottom of the processing tank, and an air inlet that communicates with the space is provided, and An air outlet is formed on the wall surface that separates the space from the inside of the processing tank.

In the present invention, the air outlet is
It is preferably formed on a vertical or obliquely downward wall surface that separates the space from the inside of the processing tank. A filter is preferably provided at the air outlet.

Further, in the present invention, the opening of the air inlet is formed at a position higher than the highest position of the opening of the air outlet, and the water generated by the decomposition of the food waste flows back from the air inlet. Is preferably prevented.

Further, in the present invention, a ventilation device for discharging the air in the treatment tank is provided on the lid covering the upper portion of the treatment tank or the upper opening of the treatment tank, and the air blown out from the air outlet is placed on the upper portion. Therefore, it is preferable to actively discharge it.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a food waste processing apparatus 1 of the present invention. In this garbage processing device 1, 2 is an exterior body,
A cylindrical processing tank 3 is housed in the exterior body 2,
The upper opening of the processing bath 3 is closed by a lid 4 so as to be openable and closable by a hinge 5.

The exterior body 2 is composed of a shoulder body 6, a body 7 and a bottom body 8. The bottom body 8 is fixed to the bottom of the processing bath 3,
The shoulder body 6 is attached to the upper end portion of the processing tank 3, and the body 7 formed by bending a metal plate into a tubular shape is fixed by sandwiching the upper and lower ends thereof with the shoulder body 6 and the bottom body 8. There is.

The assembly structure of the exterior body 2 and the processing bath 3 is generally such that the processing bath 3 is housed in the exterior body 2 and the processing bath 3 is suspended above the exterior body 2. . However, since the processing tank 3 accommodates the filler 29 as described later, and a heavy member such as the stirring device 16 and the motor 20 described later is installed in the lower portion thereof, the weight becomes considerably large.

Therefore, the mounting plate 31 is mounted on the bottom body 8 of the exterior body 2.
By mounting the processing tank 3 via the and fixing both, and by attaching the shoulder body 6 and the body 7 to the processing tank 3 and the bottom body 8 having an integrated structure, it is possible to oversize the exterior body 2. It is forceless and does not need to be unnecessarily sturdy.

On the outer side of the upper part of both sides of the exterior body 2, as shown in FIG.
The handle member 9 is attached as shown in FIG.
You can carry it with you.

Also in the mounting structure of the handle member 9,
As shown in FIG. 3 (b), by engaging the upper end of the handle member 9 with the lower side of the flange portion 11 that extends to the outer periphery of the upper end of the processing tank 3, it is most convenient to lift the food waste processing device 1. The heavy processing tank 3 can be lifted directly by applying force, and the exterior body 2 can be lifted together with the processing tank 3 without applying excessive force.

Reference numeral 12 denotes an outlet provided on the lower side surface of the food waste processing apparatus 1 from inside the processing tank 3 to the outside.
The contents in the processing tank 3 can be discharged from the outlet 12 and is normally closed by the closing lid 13.

A guide passage 14 for guiding the discharged contents is formed in the lower portion of the outlet 12.
The guide passage 14 projects from the surface of the exterior body 2.
Instead of projecting the guide passage 14 from the surface of the exterior body 2, the exterior body 2 below the guide passage 14 may be recessed.

In the center of the bottom of the processing tank 3, the processing tank 3
Is formed with a bulging portion 15 protruding inward.

Reference numeral 16 is a stirrer provided in the processing tank 3, which is a rotating shaft 17 provided upright in the center of the bulging portion 15.
The arm 18 is attached to the upper end of the arm 18, and a stirring blade 19 extending upward in a spiral shape along the inner surface of the processing tank 3 is formed at one end of the arm 18. Also, the rotating shaft 1
A motor 20 is attached to the lower end of 7, and the stirring device 16
Is designed to rotate.

An annular cover 21 is attached around the bulging portion 15, and an annular space 22 surrounded by the cover 21 and the bulging portion 15 is formed. An air outlet 23 having a filter 32 is formed on the peripheral wall surface to communicate the space 22 with the inside of the processing tank 3. The air outlet 23 may be formed continuously over the entire circumference of the cover 21, or may be a large number of small holes formed intermittently.

The air outlet 23 may be formed on the wall surface that separates the space 22 from the processing tank 3, and the cover 21 may be formed.
Although it can be formed on the upper surface or the peripheral surface of the cover 21, it is preferably formed on the wall surface of the peripheral surface of the cover 21 that is vertically or obliquely downward as shown in FIG.

An air inlet 24 is provided in the space 22 so as to project air from the air pump 25 into the space 22 through the air pipe 26. The tip of the air inlet 24 is
As shown in FIG. 1, it is preferably formed at a position higher than the upper edge of the air outlet 23.

Further, the arm 18 in the stirring device 16
A bent portion 27 is formed on the other end of the stirrer 16 and the stirrer 16 is rotated to cause the bent portion 27 to move to the air outlet 23.
It is preferable to pass just before.

Reference numeral 28 is a ventilation device provided on the lid 4. Although the ventilation device 28 is not always necessary in the present invention, it is not necessary to install the ventilation device 28 on the lid 4 or the upper part of the processing tank 3.
Is preferably provided, and the air in the processing tank 3 is discharged to the outside to ventilate the inside of the processing tank 3.

FIG. 3 shows another embodiment of the present invention, in which a cover 21 is attached to a corner between the bottom portion and the outer peripheral portion of the processing tank 3, and the cover 21 and the bottom surface of the processing tank 3 and the inner peripheral surface. An annular space 22 is formed between and, and an air outlet 23 is formed on the inner peripheral wall surface of the cover 21.

[0030]

When the food waste processing apparatus 1 of the present invention is used, the filler 29 such as sawdust is stored in the processing tank 3,
Garbage 30 is put into the filling material 29. Garbage 30
Can be opened by opening the lid 4 and added as required.

Then, the air pump 25 is used for the air inlet 24.
From the air into the space 22 and blows the air from the air outlet 23 into the treatment tank 3 at the bottom of the treatment tank 3, and the air in the treatment tank 3 is discharged from the upper portion by the ventilation device 28. Meanwhile, the stirrer 16 is rotated to stir the filler 29 and the garbage 30 in the processing tank 3.

As a result, air is blown into the filler 29 at the bottom of the treatment tank 3, and the filler 29 containing air is agitated by the agitator 16, so that the filler 29 in the treatment tank 3 is entirely covered. A sufficient amount of air is supplied, aerobic bacteria are actively activated, and the garbage 30 is rapidly decomposed.

Further, in the present invention, since the annular space 22 is formed at the bottom of the processing tank 3 and the air outlet 23 is formed on the wall surface separating the space 22 and the processing tank 3, the air has a wide range. There is no possibility that the filler 29 is gently mixed from the air outlet 23 and a large amount of air is locally blown in to lower the temperature.

When the air outlet 23 is formed on the upper surface of the space 22, the filling material 29 may be clogged in the air outlet 23. However, as defined in claim 2, the air outlet 23 is formed on a vertical surface or at an angle. By forming the surface facing downward, the air outlet 23 is not clogged with the filler 29.

Further, as defined in claim 3, by providing the filter 32 at the air outlet 23, it is possible to prevent the filler 29 and the garbage 30 from entering the space 22.

Further, when the garbage 30 is decomposed, water is generated, and if the water stays at the bottom of the treatment tank 3, there is a possibility that it will enter the space 22 through the air outlet 23. The tip of the air inlet 24 is the air outlet 2
By forming it at a position higher than the highest position of the opening of No. 3, it is possible to prevent water from flowing back to the air inlet 24.

Further, as shown in the drawing, by passing the bent portion 27 of the stirrer 16 immediately in front of the air outlet 23, the filler 29 containing the air blown from the air outlet 23 can be quickly discharged. By mixing with the filler material 29 in the other part, the air can reach the entire filler material 29 more quickly.

The filler 29 is blown out from the air outlet 23.
The air passing through the inside and exiting upward is discharged to the outside by the ventilation device 28. The air can be exhausted through an appropriately formed exhaust port, a gap between the lids and the like without the ventilator 28, but the air that has passed through the filler 29 contains water generated by the decomposition of the garbage 30. , Condensation may form on the bottom surface of the lid or around the exhaust port. Therefore, it is preferable to prevent dew condensation by actively ventilating the ventilation device 28.

The rotation drive of the stirring device 16 in the present invention,
Blow-out of air from air outlet 23 and ventilation device 2
Ventilation in the treatment tank 3 by 8 may be performed continuously, but it should be performed intermittently depending on conditions such as the outside temperature, the temperature and humidity in the treatment tank 3, and the input of the garbage 30. You can also

For example, when the outside air temperature is low, it is preferable to refrain from blowing air and ventilation to prevent the temperature inside the treatment tank 3 from lowering. Further, the decomposition of the garbage 30 progresses and the temperature inside the treatment tank 3 increases. It is preferable that more air be blown to replenish and the decomposed gas be positively exhausted by the ventilator 28 as the temperature rises.

Immediately after the garbage 30 is charged, it is preferable to rotate the stirring device 16 to sufficiently disperse the garbage 30 in the filler 29. After once dispersing, the frequency of rotation of the stirring device 16 It is preferable to prevent the heat generated by the decomposition of the food waste 30 from being dissipated. When the rotating stirring device 16 is stopped, it is preferable to control so that the stirring blade 19 stops at a position separated from the outlet 12 so as not to interfere with the removal of the filler 29.

In the food waste processing apparatus 1 of the present invention, the food waste 30 is aerobically decomposed and disappears by successively feeding the food waste 30 into the filler 29 in the processing tank 3 as required. , It can be used continuously, but if it is used for a long time, the filler 29 is also decomposed and the garbage 30
The water is hardened by the water generated by the decomposition, and the action of promoting the decomposition of the input food waste 30 deteriorates.

In such a case, it is preferable to open the closing lid 13 and discharge the deteriorated filler 29 from the outlet 12 and replace it with a new filler 29. In the above-described embodiment, since the tip of the guide passage 14 at the outlet 12 projects from the outer surface of the exterior body 2, it is possible to prevent the water in the filler 29 from dripping along the surface of the exterior body 2 and contaminating the device. Can be prevented.

[0044]

According to the present invention, the air is treated in the treatment tank 3
Is supplied from the bottom of the container, passes through the inside of the filler 29, and the raw garbage 30
Is discharged to the outside of the device by the ventilation device 28 together with the water and gas components generated by the decomposition of the raw garbage 30.

Therefore, the air is efficiently mixed in the filling material 29, the garbage 30 is effectively decomposed, and the moisture and the like generated by the decomposition are discharged together with the air. Therefore, a special structure for removing water is provided. Does not need

An annular space 22 is formed at the bottom of the processing tank 3, and the air outlet 2 formed on the wall surface of the space 22.
Since the air is blown out from No. 3, the air can be gently and uniformly included in the filler 29 in a wide range, and the air blowout port 23 is not clogged with the filler 29 to prevent the air flow.

Further, according to the second aspect of the present invention, since the air outlet 23 is formed on the vertical or obliquely downward wall surface in the space 22, the possibility that the air outlet 23 will be clogged is further reduced, and the space 22 is prevented. The filler 29 or the like does not enter.

According to the invention of claim 3, the filter 32 prevents the filler 29 from entering the space 22,
According to the invention of claim 4, it is possible to prevent the water accumulated at the bottom of the processing tank 3 from flowing back to the air inlet 24.

Further, according to the invention of claim 5, raw garbage 3
The air containing moisture generated by the decomposition of the
8 is positively discharged and ventilated, so that dew condensation does not occur on the back surface of the lid 4 or the like.

[Brief description of drawings]

FIG. 1 is a central longitudinal sectional view of an embodiment of the present invention.

FIG. 2 is a central longitudinal sectional view of a main part, showing another embodiment of the present invention.

FIG. 3 is a view showing a mounting structure of a handle member 9 in the embodiment, (a) is a perspective view of a main part,
(B) is a central longitudinal sectional view of a main part.

[Explanation of symbols] 1 garbage treatment device 3 treatment tank 4 lid 16 stirring device 17 rotating shaft 22 space 23 air outlet 24 air inlet 28 ventilation device 29 filling material 30 garbage 32 filter

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masami Hata 1-20-5 Tenma, Kita-ku, Osaka City, Osaka Prefecture Zojirushi Mahobin Co., Ltd.

Claims (5)

[Claims] 1. A cylindrical processing tank (3) comprising a stirring device (16) rotated by a vertical rotating shaft (17), and a filler (29) and a raw material housed in the processing tank (3). Garbage (3
0) is agitated by the agitator (16) while aerobically decomposing the garbage (30), in the garbage treatment device (1), an annular space (22) is provided at the bottom of the treatment tank (3). And an air inlet (24) that forms a space and communicates with the space (22).
And an air outlet (23) is formed on a wall surface that separates the space (22) from the inside of the treatment tank (3). 2. The air outlet (23) is formed in a vertical or obliquely downward wall surface that separates the space (22) from the inside of the processing tank (3).
Garbage processor described in 3. The filter according to claim 1, wherein the air outlet (23) is provided with a filter (32).
Garbage processor described in 4. The opening according to claim 1, wherein the opening of the air inlet (24) is formed at a position higher than the highest position of the opening of the air outlet (23). Garbage disposal device described in 3. 5. A ventilation device (28) for exhausting air in the treatment tank (3) is provided on a lid (4) covering the upper portion of the treatment tank (3) or the upper opening of the treatment tank (3). The garbage processing device according to claim 1, 2, 3 or 4, characterized in that