JP3426836B2 - Garbage processing equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food waste processing apparatus, and more specifically, it automatically reduces the volume of food waste produced from food factories, hotels, restaurants, apartments, etc. without soiling the hands. The present invention relates to a food waste treatment device for reducing, deodorizing and discharging.

[0002]

[Background Art] Garbage discharged from food factories, hotels, restaurants, multi-dwelling houses, etc. has problems such as the occurrence of decay, increase of garbage storage area, and increase of collection fees for disposal companies, and collection and transportation. There are problems such as increased costs and labor shortages, as well as problems such as measures for incinerators and landfills, and reduction of volume of garbage, reduction of volume, prevention of spoilage, deodorization, etc. are major issues. There is.

Therefore, conventionally, an electric heater is provided on the outer circumference of the stirring / drying chamber, or a method of heating raw dust from the outside by heating the outer circumference of the stirring / drying chamber with hot air for drying, or stirring. For the odor generated from garbage in the drying room, a method has been proposed in which a deodorizer such as an ozone deodorizer is newly provided. However, the former method has a problem that the raw garbage drying treatment efficiency is poor and the treatment time is long because the garbage is heated and dried from the inner wall of the stirring and drying chamber, and the latter deodorizing method has a problem of deodorizing equipment. There is a problem that sufficient deodorization cannot be performed due to insufficient capacity. Further, a device for reducing the volume by crushing, dehydrating and bagging food waste has been proposed, but due to the presence of water in the food waste, the problem that the weight is heavy and the transportation cost does not decrease, There is a problem that raw garbage is easily decomposed and thus has an adverse environmental impact.

In order to solve these problems, a crushing and dehydrating device for crushing and dehydrating food waste, a drying container equipped with a stirrer, a combustion device, a heat exchanger and the like are provided, and the combustion gas of this combustion device is used to Air heated by a heat exchanger is supplied into the drying container to be used for the drying process of the garbage put in the drying container, and the air containing the odorous component discharged from the drying container is the above-mentioned. There has been proposed a food waste treatment device that is used as combustion air for a combustion device to thermally decompose odorous components and exhaust the same (JP-A-5-13118).
No. 4, JP-A-5-131185, and JP-A-5-131185.
146702, JP-A-5-329466,
JP-A-5-329467 and JP-A-5-32946
No. 8, etc.). However, these garbage processing devices
There is a problem that the wastes after the drying process cannot be efficiently and automatically carried out of the raw waste disposal device.

[0005]

SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and it is possible to reduce the volume and the amount of food waste automatically and efficiently without soiling the hands. ,
It is an object of the present invention to provide a food waste processing device capable of deodorizing without newly providing a deodorizing machine and capable of efficiently and automatically carrying out the waste after the drying processing.

[0006]

As a result of intensive studies to solve the above-mentioned problems, the inventor of the present invention has found that a specific means provided with a stirring means for stirring and directly drying the thrown food waste. One drying chamber is connected to the first drying chamber, and is attached to a rotating shaft common to the agitating means for agitating and transporting the dried food waste processed in the first drying chamber and discharging it to the outside. A food waste treatment device provided with a specific second drying chamber equipped with specific stirring and discharging means, a combustion device, and a heat exchanger for heating the air introduced into the first drying chamber by the combustion gas of this combustion device. Using, as the air for combustion by introducing air containing an odorous component generated from food waste in the first drying chamber into the combustion device, deodorizing by heating, and exhausting,
For example, during the drying process of food waste in the first drying chamber, when the rotary shaft is rotated in a predetermined direction, the food waste is stirred, crushed and dried in the first drying chamber. Is not conveyed to the second drying chamber by the action of, and after the drying process of the food waste is completed, for example, when this rotating shaft is rotated in the opposite direction, the dried food waste is stirred from the first drying chamber to the second drying chamber. The dried food waste that has been conveyed while being conveyed to the second drying chamber can be automatically and easily discharged from the discharge port of the second drying chamber while being conveyed while being stirred by the action of the specific stirring and discharging means. The inventors have found that the problems can be solved and completed the present invention.

That is, in the invention of claim 1 of the present invention, the lower part has a semi-cylindrical shape and the upper part has a rectangular parallelepiped shape, and the garbage is put into the center of the semi-cylinder from the rectangular parallelepiped and stirred. For direct drying, a first drying chamber equipped with a stirring device having a rotating shaft equipped with a plurality of stirring means so as to be able to rotate in the forward and reverse directions , and the first drying chamber are communicated with each other, and the lower portion is concentric with the semi-cylinder. It has a cylindrical shape, and the rotating shaft extends to the center of the cylinder, and in order to discharge and convey the dried food waste after processing in the first drying chamber to the outside, A second drying chamber having an agitating and discharging means attached to a rotary shaft and having a discharge port, a direct drying air supply passage and a direct drying air exhaust passage connected to the first drying chamber, and the direct drying air. Combustion that heats and deodorizes by using air containing odorous components in the exhaust passage as combustion air An apparatus, a heat exchanger that heats the air taken in from the outside by the combustion gas of this combustion apparatus to directly convert it into drying air, and an exhaust passage that exhausts the combustion gas that has undergone heat exchange in this heat exchanger to the atmosphere. The stirring / discharging means is a screw-shaped blade continuously attached to the rotary shaft in a spiral shape, and at least one rectangular stirring blade disposed on the outer peripheral end of the blade from one end to the other end of the blade. The stirring blade is arranged such that the long side of the stirring blade is parallel to the rotation axis and the short side of the stirring blade faces the center of the cylinder, and the blade has the outer diameter of the rotation axis at the center. Phase
Has a corresponding hole and the outer diameter is slightly smaller than the inner diameter of the cylinder.
Make a notch on the radius of the disk and attach both ends of this disk to this disk.
In the hole of the unit wing made by stretching in the thickness direction,
Insert the rolling shaft and weld the contact parts of both
Repeated spirally shaped screw-shaped blade
In the garbage processing device which is, from the first drying chamber side
Between the first unit blade and the second unit blade, or
Between the second unit blade and the third unit blade,
Or between the third unit wing and the fourth unit wing
A food waste processing device characterized by not having a stirring blade
It

According to a second aspect of the present invention, in the food waste treating apparatus according to the first aspect , the first drying chamber side is the first side.
A stirring blade between the second unit blade and the second unit blade, which is
Or between the second and third unit wings
Stirrer blade, or even a third unit blade and a fourth unit blade
It is characterized in that a notch is provided in the stirring blade between the position blade and the position blade .

[0009]

[0010]

[0011]

[0012]

[0013]

The garbage treatment device of the present invention is provided with a combustion device, and the combustion gas of this combustion device heats the direct drying air introduced into the first drying chamber with a heat exchanger, and the heated air is heated. Is introduced into the first drying chamber as a heat source for the raw garbage drying process and used to directly dry the raw garbage. The air discharged from the first drying chamber and containing the odorous components generated from raw garbage is introduced into a combustion device and used as combustion air to decompose the odorous components by heat, deodorize and exhaust.

The garbage processing device of the present invention comprises a first drying chamber and a second drying chamber. Then, for example, the agitating means of the first drying chamber and the agitating and discharging means of the second drying chamber, which are attached to a common rotary shaft, are rotated in a predetermined direction to dry the food waste in the first drying chamber. During the period, the food waste is stirred, crushed and dried in the first drying chamber, but is not conveyed to the second drying chamber due to the action of the stirring and discharging means of the second drying chamber. That is, for example, while the raw garbage is being dried in the first drying chamber, the raw garbage is agitated, crushed and dried in the first drying chamber by the stirring means of the first drying chamber, while the raw garbage is dried in the second drying chamber. The stirring / discharging means suppresses the conveyance of the food waste to the second drying chamber and prevents the garbage from moving from the first drying chamber to the second drying chamber. Then, after the drying process of the food waste in the first drying chamber is completed, for example, when this rotating shaft is rotated in the opposite direction, the dried food waste is transferred from the first drying chamber to the second drying chamber by the stirring means of the first drying chamber. It is designed so that the dust conveyed to the second drying chamber while being agitated and conveyed to the second drying chamber is agitated and conveyed by the agitating and discharging means of the second drying chamber and discharged from the discharge port provided in the second drying chamber.

The stirring and discharging means having such a function is
It is composed of a spiral screw-shaped blade attached to the rotating shaft, and at least one rectangular stirring blade arranged on the outer peripheral end of the blade from one end to the other end of the blade. . The long side of the stirring blade is parallel to the rotation axis, and the short side of the stirring blade faces the center of the cylinder forming the second drying chamber. While the raw garbage is being dried in the first drying chamber, the stirring and discharging means of the second drying chamber suppresses the transportation of the raw garbage to the second drying chamber. After the drying process of the food waste in the first drying chamber is finished, when this rotating shaft is rotated in the opposite direction, the dried food waste is stirred by the stirring blade of the stirring and discharging means and while being conveyed by the blade, It is discharged from the discharge port provided in the second drying chamber. A plurality of stirring blades having such a function can be provided as needed.

The shape, size, and method of attaching the blade to the rotary shaft are not particularly limited. However, for example, a notch is provided on the radius of a disc having a hole corresponding to the outer diameter of the rotating shaft at the center and the outer diameter of which is slightly smaller than the inner diameter of the cylinder forming the second drying chamber. Insert the rotary shaft into the hole of the unit blade made by stretching both ends of the disk in the thickness direction of the disk, and weld the contact parts of the two repeatedly to make a spiral continuous screw. The shaped blade has a simple structure and is easy to manufacture and can be preferably used.

From the side of the first drying chamber, between the first unit blade and the second unit blade, or between the second unit blade and the third unit blade, or further the third unit blade. If a stirring blade is not provided between the unit blade of No. 4 and the unit blade of No. 4, the function of suppressing the transfer of food waste to the second drying chamber while drying the food waste in the first drying chamber, Incorporation of dried food waste from the first drying chamber into the second drying chamber when the rotary shaft is rotated in the opposite direction without impairing the functions of stirring and conveying the dried food waste in the second drying chamber The function can be improved.

A stirring blade between the first unit blade and the second unit blade from the first drying chamber side, or a stirring blade between the second unit blade and the third unit blade. Alternatively, or by further providing a notch in the stirring blade between the third unit blade and the fourth unit blade, similarly to the above, the dry raw material when the rotating shaft is rotated in the opposite direction It is possible to improve the function of taking in the waste from the first drying chamber to the second drying chamber. It is not particularly limited which of the above means is used to improve the function of taking the dried food waste from the first drying chamber into the second drying chamber when the rotating shaft is rotated in the opposite direction. However, any of the above means may be used as long as the blade has sufficient strength due to, for example, the thickness of the blade being thick, but if the strength of the blade is not sufficient, a notch is provided. Is preferred.

[0020]

[0021]

The heated air introduced into the inside of the first drying chamber equipped with the agitator for the garbage is used for directly heating and drying the garbage. The amount of air introduced into the first drying chamber is not particularly limited, and may be appropriately determined depending on the type and amount of food waste. However, the amount of air is preferably up to 5 times the theoretical amount of air required for combustion of fuel in the combustion device.

[0023]

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of the garbage processing device of the present invention. FIG. 2 is a perspective view showing the outline of the configurations of the first drying chamber and the second drying chamber of the garbage processing device of the present invention. FIG. 3 is a perspective view showing the outline of the configuration of the garbage processing device of the present invention. 1 to 3, in a food waste processing device 1, a lower part has a semi-cylindrical shape 2 and an upper part has a rectangular parallelepiped shape. A stirrer 7 provided with a rotary shaft 6 mounted with a plurality of L-shaped stir bars 5 driven by an electric motor 20 (see FIG. 3) for throwing in and stirring and directly drying A first drying chamber 8 is provided.
The stirring rod 5 is attached to the rotating shaft 6 at a twisted position substantially at right angles. In addition, the food waste processing apparatus 1 communicates with the first drying chamber 8 and has a cylindrical shape whose lower part is concentric with the semi-cylinder 2, and the rotary shaft 6 is provided at the center of the cylinder 9. In order to convey the dried food waste that has been extended and has been processed in the first drying chamber 8 by stirring and discharging it to the outside from the discharge port 10, the stirring discharge which is composed of screw-shaped blades continuous in a spiral shape described later. A second drying chamber 12 in which the means 11 is attached to the rotary shaft 6 is provided.

Further, the food waste processing apparatus 1 includes a first drying chamber 8
A direct drying air supply passage 13, a direct drying air exhaust passage 14, and the direct drying air exhaust passage 14
Combustion device 15 for heating and deodorizing by using air containing the odorous component as a combustion air, exhaust passage 16 for exhausting combustion gas from this combustion device 15 to the atmosphere, and exhaust passage 1
A heat exchanger 18 is provided which heats the air taken in by a blower 17 from the outside by the combustion gas passing through 6 to directly turn it into drying air. 19 is an air exhaust passage 14 for direct drying
A branch portion for dividing the air passing therethrough to form one air as the combustion primary air b used for combustion of the fuel in the combustion device 15 and the other air as the combustion secondary air a is shown.

When the combustion device 15, the blower 17, and the electric motor 20 are operated in the garbage disposal 1 having the above-mentioned configuration, the air taken into the garbage disposal 1 by the blower 17 from outside the garbage disposal 1 is The waste gas is sent to the heat exchanger 18 installed in the waste treatment device 1, is heat-exchanged with the combustion gas from the combustion device 15, and is directly supplied from the drying air supply passage 13 into the first drying chamber 8 to generate raw material. It becomes the heat source air for the waste treatment and drying. The high-temperature air blown into the first drying chamber 8 is put into the first drying chamber 8 and agitated by the stirring device 7 to come into contact with the crushed garbage to be adiabatically cooled, thereby removing moisture from the garbage. Absorb and dry food waste directly. As shown in FIG. 2, when the rotary shaft 6 is rotated in the direction shown by the arrow α during the drying of the food waste in the first drying chamber 8, the food waste is moved by the stirring rod 5 in the first drying chamber 8. It is agitated, crushed and dried, but is not conveyed to the second drying chamber 12 by the action of the agitating and discharging means 11 described later.

The moist air containing the odor generated from the raw garbage when the raw garbage is directly dried and absorbing the moisture of the raw garbage is directly passed through the air exhaust passage 14 for drying, and then the branch portion 1 is provided.
The primary air for combustion b and the secondary air for combustion a are branched at 9 and the primary air for combustion b burns together with the fuel in the burner section of the combustion device 15, so that the odorous components are decomposed by heat and deodorized at high temperature. The secondary air for combustion a is introduced into the flame inside the burner part of the combustion device 15 and comes into contact with the high temperature zone in the flame, whereby the odorous components are decomposed by heat and deodorized at high temperature. Is given. The combustion gas heats the air taken in from the outside by the blower 17 in the heat exchanger 18, and is discharged from the exhaust passage 16 to the outside of the garbage processing device 1.

After the raw garbage is dried in the first drying chamber 8 as described above, the rotary shaft 6 is rotated in the opposite direction shown by the arrow β as shown in FIG. The food waste is conveyed while being stirred from the first drying chamber to the second drying chamber by the action of the stirring rod 5, and is conveyed while being stirred in the second drying chamber 12 by the action of the stirring / discharging means 11 described later. It is discharged from the outlet 10. In the above example,
Although the example in which the discharge port 10 is provided at the front side position avoiding the bottom surface of the bottom portion A of the second drying chamber 12 is shown, the discharge port 10 is oriented so as to avoid the bottom surface of the bottom portion A of the second drying chamber 12. It may be provided at the side position B or the side surface C.

A temperature detector (not shown) is provided in each of the first drying chamber 8 and the second drying chamber 12, and a temperature detector (not shown) is provided in each of the direct drying air supply passage 13 and the direct drying air exhaust passage 14. An instrument is provided to send the detected temperature to a control device (not shown), and the control device outputs a signal to the combustion device 15 or the like to control these temperatures.

In the present invention, the degree of drying of food waste is not particularly limited. However, food waste is a mixture of various foods, and the factors of spoilage and odor generation vary depending on the water activity aw of each food (vapor pressure of food / saturated water vapor pressure of air). If the water activity is too low, deterioration of the lipid is promoted by oxidation of the lipid.
It is said that it is preferable to dry so that it is about 2 to 0.6. Therefore, it is preferable to dry so that the water activity becomes a predetermined value.

FIG. 4 (a) is an explanatory view showing a state in which a spirally continuous screw-shaped blade composed of a plurality of unit blades having stirring blades arranged at the outer peripheral end is attached to the rotary shaft,
FIG. 4B is an explanatory diagram of a disc for forming the unit blade. FIG. 5 is an explanatory view showing a state in which a stirring and discharging means composed of spirally-shaped screw-shaped blades having stirring blades arranged at the outer peripheral end is attached to the rotary shaft.

As shown in FIGS. 4 and 5, the stirring / discharging means 11 includes a screw-shaped blade continuously attached to the rotary shaft 6 in a spiral shape, and an outer peripheral end of the blade from one end of the blade to another. It is composed of a rectangular stirring blade 21 arranged over the end. The long side of the stirring blade 21 is parallel to the rotary shaft 6, and the short side of the stirring blade 21 is arranged to face the center of the cylinder 9 forming the second drying chamber 12. While the food waste is being dried in the first drying chamber 8, the stirring and discharging means 11 suppresses the conveyance of the food waste to the second drying chamber 12. After the drying process of the food waste in the first drying chamber 8 is completed, when the rotary shaft 6 is rotated in the opposite direction, the dried food waste is stirred by the stirring blade 21 of the stirring and discharging means 11 and is conveyed by the blade. While being
It is discharged from the discharge port 10 provided in the second drying chamber 12.

A notch 22 is provided in the stirring blade 21 between the first unit blade 11A and the second unit blade 11B counted from the first drying chamber 8 side. By providing the cutout portion 22, the second drying chamber 12 for raw garbage during the drying process of the raw garbage in the first drying chamber 8
Function of the stirring and discharging means 11 for suppressing the conveyance to the container, and the stirring and discharging means 1 for stirring and conveying the dried food waste in the second drying chamber 12.
It is possible to improve the function of taking in the dried food waste from the first drying chamber 8 to the second drying chamber 12 when the rotary shaft 6 is rotated in the opposite direction without impairing the function of 1.

Manufacturing method, shape, size and rotating shaft 6 of the blade
There is no particular limitation on the method of attaching to. However, a circle having a hole 23 corresponding to the outer diameter of the rotary shaft 6 at the center as shown in FIG. 4B, and having an outer diameter slightly smaller than the inner diameter of the cylinder 9 forming the second drying chamber 12. A unit blade 11 formed by providing a notch 25 on the radius of the plate 24 and extending both ends D and E of the notch 25 in the thickness direction of the disc 24.
The rotary shaft 6 is inserted into the hole 23 of A, the contact portions of both are welded to fix the unit blade 11A, and the same operation is repeated to repeat the unit blade 11B, the unit blade 11C, and the unit blade 11D. A screw-shaped blade that is continuous and spirally formed by fixing .. is simple in structure, easy to manufacture, and can be preferably used. Unit wings 11A, 11B, 11C, 1
1D ... and the stirring blade 21 are joined at the welded portion F.

[0035]

According to the present invention, while the raw garbage is being dried in the first drying chamber, the raw garbage is agitated, crushed and dried in the first drying chamber. By the action of the means, it is not conveyed to the second drying chamber, and it is possible to automatically reduce the volume of garbage and reduce the amount of waste in a short time without soiling the hands, and it is possible to deodorize, and After the drying treatment, for example, by rotating the rotating shaft of the stirring device in the opposite direction, the dried and discharged garbage is conveyed while being stirred in the second drying chamber by the action of the stirring and discharging means, and efficiently and automatically. Can be carried out of the processing equipment.

Air containing odorous components generated from garbage in the first drying chamber is discharged from the first drying chamber, introduced into the combustion device and heated, and the odorous components are decomposed by heating.
Since it is deodorized and exhausted to the outside of the garbage processing device, it can be easily deodorized without newly installing a deodorizer.

By making a cut on the radius of a specific disc,
A screw-shaped blade with a continuous spiral shape made by repeating the operation of welding the unit blade made by stretching both ends of this notch in the thickness direction of the disk to the rotating shaft a number of times, and has a simple structure. It is also easy.

No stirring blade is provided between the first unit blade and the second unit blade from the side of the first drying chamber,
Alternatively, by providing a notch on the stirring blade provided between the first unit blade and the second unit blade, etc., the first portion of the raw garbage during the drying process in the first drying chamber (2) The first of the dry food waste when the rotating shaft is rotated in the opposite direction without impairing the function of suppressing the transfer to the drying room, the function of stirring and transferring the dry food waste in the second drying room. The intake function from the drying chamber to the second drying chamber can be improved.

[0039]

[0040]

[0041]

If natural gas, petroleum, or the like is used as the fuel for the combustion device, the running cost can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a garbage processing device of the present invention.

FIG. 2 is a perspective view showing the outline of the configurations of a first drying chamber and a second drying chamber of the garbage treatment device of the present invention.

FIG. 3 is a perspective view showing the outline of the configuration of the garbage processing device of the present invention.

FIG. 4A is an explanatory diagram showing a state in which a spirally continuous screw-shaped blade composed of a plurality of unit blades having stirring blades arranged at the outer peripheral end is attached to a rotating shaft. (B)
FIG. 6 is an explanatory diagram of a disc for forming a unit blade.

FIG. 5 is an explanatory view showing a state in which a stirring and discharging means composed of screw-shaped blades continuous in a spiral shape with stirring blades arranged at the outer peripheral end is attached to a rotating shaft.

[Explanation of symbols]

1 garbage processing equipment 2 half cylinder 3 rectangular parallelepiped 4 slot 5 stir bar 6 rotation axes 7 Stirrer 8 first drying room 9 cylinder 10 outlet 11 Agitating and discharging means 11A, 11B, 11C, 11D Unit wings 12 Second drying room 13 Direct drying air supply passage 14 Direct drying air exhaust passage 15 Combustion device 16 Exhaust passage 17 blower 18 heat exchanger 19 branches 20 electric motor 21 stirring blade 22 Notch 23 holes 24 discs 25 notches

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Claims (2)

(57) [Claims] 1. The lower part has a semi-cylindrical shape and the upper part has a rectangular parallelepiped shape, and a plurality of stirrings are performed in order to directly feed the raw garbage from the rectangular parallelepiped into the center of the semi-cylindrical and stir to dry. A first drying chamber provided with a stirring device provided with a rotating shaft equipped with a means capable of rotating in the forward and reverse directions, and having a cylindrical shape communicating with the first drying chamber and having a lower part concentric with the semi-cylinder. The rotating shaft extends to the center of the cylinder, and agitating and discharging means is attached to the rotating shaft to stir and convey the dried food waste after processing in the first drying chamber and to discharge it to the outside. And,
A second drying chamber provided with an outlet, a direct drying air supply passage and a direct drying air exhaust passage connected to the first drying chamber,
A combustion device for heating and deodorizing by using air containing an odorous component of the direct drying air exhaust passage as combustion air, and a heat generated by heating the air taken in from the outside by the combustion gas of this combustion device to directly form the drying air. An exchanger and an exhaust passage for exhausting the combustion gas that has been heat-exchanged by the heat exchanger to the atmosphere, the stirring and discharging means is a spiral continuous screw-shaped blade attached to the rotating shaft, and the blade. At the outer peripheral end of at least one rectangular stirring blade disposed from one end to the other end of the blade, the long side of the stirring blade is parallel to the rotation axis, and the short side of the stirring blade is Arranged so as to face the center of the cylinder, and the wing is
It has a hole corresponding to the outer diameter of the rotary shaft, and the outer diameter of the cylinder is
Make a notch on the radius of the disk that is slightly smaller than the inner diameter, and
A unit made by stretching both ends of the disk in the thickness direction of this disk
Insert the rotating shaft into the hole on the blade to melt the contact area between the two.
Spiral continuous made by repeating contacting multiple times
In the garbage treatment device that is a screw-shaped blade,
The first unit blade and the second unit from the first drying chamber side
Between the wings, or even the second unit wing and the third
Between the unit wing, or even the third unit wing and the fourth
An apparatus for treating food waste, which is characterized in that a stirring blade is not provided between the unit blade of eyes . 2. The first unit blade from the first drying chamber side
And a second impeller, or even a second impeller
A stirring blade between the third unit blade and the third unit blade, which is
Or between the third unit wing and the fourth unit wing
A notch is provided in the stirring blade, wherein
The described garbage processing device.