JPH0717471B2 - Organic waste treatment equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic waste treatment apparatus for mainly drying organic waste such as food waste having a high water content.

[0002]

2. Description of the Related Art As an organic waste treatment apparatus of this type, conventionally, a heater for heating the inside of the treatment tank is provided and a stirring mechanism is installed in the treatment tank to stir the organic waste in the tank while heating. Then, various devices for drying or fermenting have been developed.For example, when processing a large amount of food scraps such as food scraps from food service centers, catering businesses, restaurants, etc., they are collected and put in a storage tank. While heating and stirring the inside of the tank,
It is dried or fermented.

[0003]

Generally, the garbage contained in a lunch center has a water content of 80% to 90%.
%, Which is very high, and a large amount of water vapor, carbon dioxide gas, etc. are generated from food waste heated in the storage tank and heated by the heat of fermentation reaction. Therefore, in the conventional organic waste treatment device,
Usually, the steam and gas generated in the tank are forcedly exhausted outside the processing tank by a blower.

However, when forced evacuation is carried out, the inside of the processing tank becomes negative pressure, so that outside air enters the tank through a gap such as a hatch for inputting garbage and a hatch for taking out, and when used in a cold region, There has been a problem that the temperature rise in the tank is delayed and the temperature inside the tank is partially decreased, which causes unevenness in drying and fermentation of the organic waste. Further, since the hot air heated in the tank directly moves to the exhaust duct side and is exhausted, there is a problem that the heat energy is significantly released and the heating efficiency is low.

Therefore, there is a problem that the temperature of the food waste in the tank does not rise to the drying temperature or the optimum fermentation temperature, deodorization becomes incomplete, and the drying or fermentation process takes a long time.

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide an organic waste treatment apparatus that efficiently treats organic waste such as food waste and has a large deodorizing effect. .

[0007]

In order to achieve the above-mentioned object, the organic waste treatment apparatus of the present invention is accommodated in a storage tank having a hatch for inputting organic waste, a hatch for taking out organic waste, and an exhaust duct. are heater and arranged agitation mechanism to <br/> rotary driving the stirring vane for heating the bath, in the organic waste treatment apparatus for drying or fermentation process while stirring the organic waste warmed accommodated A heating duct part that is connected to the upper part of the tank and is formed along the side wall and the bottom wall of the container, and has a blower for circulating hot air. One end is connected to the bottom part of the heating duct part and the other end is the container. A circulation duct that is connected to the outlet provided at the top of the unit and that draws in hot air from the heating duct and circulates the hot air, and an air supply port that is provided in the suction side circulation duct of the blower and can supply outside air. And at the top of the storage tank
Mounted so as to surround the heating part of the
It comprises a far-infrared radiation porous plate having a number of holes, and a partition plate which is provided in the upper part of the storage tank so as to partition the heating part and the outlet from the exhaust duct.

[0008]

Operation: Organic waste such as garbage is put into the storage tank, the stirring blades of the stirring mechanism are rotated, and at the same time, the heater is operated and the blower is operated. The organic waste in the storage tank is heated by the radiant heat from the far-infrared radiation porous plate heated by the flame of the heater, and the air in the upper portion of the storage tank is heated by the heater. Then, part of the heated air in the upper part of the heated tank is introduced into the circulation duct through the heating duct portion by the suction force of the blower. When hot air passes through the heating duct portion, the heat is conducted to the middle portion and the bottom portion of the storage tank to heat the storage tank.

The outside air sucked from the air supply port is sucked by the blower together with the introduced warm air introduced into the circulation duct, and the warm air mixed with the outside air is discharged into the storage tank by the blower. Then, the organic waste in the tank is efficiently heated by radiant heat from above, heating from the bottom and hot air circulated and introduced into the tank.

On the other hand, the air inside the storage tank is pressurized by the discharge pressure of the blower, and a part of it is appropriately discharged from the exhaust duct through the gap between the partition plate and the organic waste. At this time, the hot air generated in the heater is blocked by the partition plate and is not directly exhausted, and the steam and exhaust gas generated from the organic waste are discharged from the exhaust duct through the high temperature atmosphere. .

Therefore, even organic waste such as high-moisture garbage can be efficiently dried or fermented and the deodorizing effect can be enhanced.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of the processing apparatus, and FIG. 2 is a right side view thereof.

1 is a storage tank for containing the organic waste A,
It has a curved bottom wall 4, and the input hatch 2 is at the top,
A take-out hatch 3 is provided to be openable and closable. Further, along the rear side wall 5 and the bottom wall 4 of the storage tank 1, a heating duct portion 6 through which warm air can pass is provided.

The heating duct portion 6 is communicated with an upper portion inside the storage tank 1 through a communication port 9 provided on an upper portion of the rear side wall 5, and a meandering partition plate 8 is arranged on a bottom portion of the heating duct portion 6. A meandering hot air passage 7 is formed along a meandering direction, and a connection port 10 for connecting a circulation duct 15 is provided at one end thereof. Since the heating duct portion 6 having such a large surface area is disposed in contact with the rear side wall 5 and the bottom wall 4 of the storage tank 1, the thermal conductivity to the storage tank 1 is good and the storage tank 1
Is a structure capable of efficiently receiving the conduction heat from the heating duct portion 6.

The surroundings of the storage tank 1 and the heating duct portion 6 are surrounded by a heat insulating wall containing a heat insulating material, and a heater 12 is arranged in the upper portion of the storage tank 1 from the right side thereof. There is.

A combustion burner is used as a heating source of the heater 12, but a high / low type in which a pilot burner is constantly ignited is used to prevent the temperature difference of the organic waste A due to heating and deodorization. It is preferable in terms of improving the effect. Further, as shown in FIG. 3 and FIG. 4, the far-infrared radiation porous plate 13 is a heating part of the heater 12 (emitted from the heater 12).
It is provided to surround the flame part) . The far-infrared radiation porous plate 13 is formed by coating the surface of a metal porous plate with ceramic or the like that emits far-infrared rays when heated.

One end of a circulation duct 15 is connected to the connection port 10 of the heating duct portion 6, and the other end of the circulation duct 15 is connected to the intake side of the blower 16. The discharge side of the blower 16 is connected to a blowout port 17 that opens at the top of the storage tank 1.

The circulation duct 15 is provided with an air supply port 18 having an adjusting lid 18a for supplying the outside air to the intake side of the blower 16 and adjusting the amount of the supplied air. The air supply port 18 may be arranged at any position between the blower 16 and the connection port 10.

Therefore, by operating the blower 16, the upper portion of the storage tank 1, that is, the heater 1 is connected through the heating duct portion 6.
The hot air heated by 2 is sucked in, and the heating duct portion 6
The hot air that has passed through the circulation duct 15 and the air supply port 1
An appropriate amount of outside air is supplied from 8, and the warm air mixed with the outside air is blown into the accommodation tank 1 through the outlet 17 again. An exhaust duct 25 for performing natural exhaust is provided on the left side of the upper part of the storage tank 1, so that steam generated inside and excess air are appropriately exhausted.

Further, inside the storage tank 1, a stirring mechanism 20 for the organic waste A is arranged. This stirring mechanism 20
Is constructed by mounting a large number of stirring blades 22 around a rotary shaft 21 supported horizontally, and a sprocket 23 fixed to an end of the rotary shaft 21 is linked to a motor 24 via a chain. It is formed so as to be rotated by 24.

A partition plate 27 is attached to the upper part of the storage tank 1 so as to vertically separate the exhaust port side and the heating part side in the upper space. The partition plate 27 is provided between the opening of the exhaust duct 25 and the heater 12 and the outlet 17, and the height position of the lower end thereof is higher than the upper surface of the appropriate amount of the organic waste A to be charged. , Is set to be slightly higher.

Next, the operation of the organic waste treatment apparatus having the above structure will be described.

The organic waste A such as raw garbage to be treated is loaded into the storage tank 1 by opening the loading hatch 2 on the upper part. Then, the motor 24 is started to start the stirring blade 2 of the stirring mechanism 20.
Rotate 2 and stir the organic waste A. At the same time, when the heater 12 is started to start heating and the blower 16 is operated, the heating duct portion 6 and the circulation duct 15 become negative pressure. Therefore, the hot air in the upper part of the storage tank 1 is sucked into the heating duct portion 6, and the hot air enters the circulation duct 15 from the connection port 10 via the warm air meandering passage 7. Further, in the conduit of the circulation duct 15, an appropriate amount of outside air is sucked through the air supply port 18, and the warm air mixed with the outside air is returned to the storage tank 1 through the outlet 17 again.

Far infrared rays are radiated from the far infrared radiating porous plate 13 heated by the operation of the heater 12, and the organic waste A in the storage tank 1 is radiated by the far infrared rays and radiant heat.
Efficiently heated with stirring.

Furthermore, since the heating duct portion 6 for passing hot air is attached directly to the rear side wall 5 and the bottom wall 4 of the storage tank 1, the heat of the heater 12 is conducted to the middle portion and the bottom portion of the storage tank 1. The storage tank 1 is also made effective by the conduction heat. Furthermore, since the warm air that has passed through the circulation duct 15 is blown from the outlet 17 toward the organic waste A in the tank, the organic waste A in the tank can also be efficiently multi-heated and dried by the hot air. To be done.

Then, the air in the storage tank 1 containing the steam generated from the heated organic waste A becomes a positive pressure by the discharge from the blower 16, and a part of the air is separated between the partition plate 27 and the organic waste A. It is appropriately discharged from the exhaust duct 25 through the space.

At this time, the partition plate 27 in the storage tank 1
The pressure on the right side of is higher than the pressure on the left side of the partition plate 27, and due to the pressure difference, the exhaust gas bypasses the lower part of the partition plate 27 and is discharged well. Therefore, the hot air is not immediately exhausted, the exhaust path becomes long, and the exhaust gas passes through the high temperature atmosphere, so that the deodorizing effect is also improved.

The partition plate 27 prevents the radiant heat from the heater 12 and the far-infrared radiation porous plate 13 from being dissipated to the exhaust duct 25 side, so that the inside of the storage tank 1 can be efficiently heated. it can.

Therefore, the organic waste A is used in cold regions.
Even if the garbage has a very high water content, the organic waste A in every corner of the tank is efficiently heated and dried,
The water content of the organic waste A rapidly decreases, for example, from 80% to around 20%, and the volume also shrinks to around 50%,
The garbage is dried.

When the organic waste A such as raw garbage is completely dried, the processing is continued as it is, and in the completely dried state, the processing apparatus is stopped, the extraction hatch 3 is opened, and the dried organic waste A is opened. Take out A.

When the organic waste A is subjected to fermentation treatment, when the water content reaches an appropriate value, the operation of the treatment equipment is stopped, the temperature is raised and the organic waste A is dried appropriately.
Is taken out of the storage tank 1 and placed in another fermentation tank. When another fermentation tank is not used, after the drying treatment as described above is completed, fermenting bacteria are put in the tank and the heating of the heater 12 is adjusted to maintain the tank temperature at an appropriate fermentation temperature. While fermenting.

In order to further enhance the deodorizing effect, the exhaust duct 25 may be equipped with a catalytic deodorizing device.

[0034]

As described above, according to the organic waste treatment apparatus of the present invention, the heating for heating the storage tank is carried out in the storage tank having the hatch for taking in the organic waste, the hatch for taking out and the exhaust duct. vessels and is a stirring blade disposed stirring mechanism for rotating the drive, housed together in an organic waste treatment apparatus for drying or fermentation process while stirring the organic waste warmed, is communicated with the upper portion of the container A heating duct formed along the side wall and bottom wall of the tank, and a blower for circulating warm air, one end of which is connected to the bottom of the heating duct and the other end of which is a blowout port provided at the top of the storage tank. A circulation duct that is connected to suck the warm air in the heating duct and circulates the warm air, an air supply port that is provided in the suction side circulation duct of the blower and can supply the outside air, and an upper part of the storage tank. Added heater
It is mounted so as to surround the heat section and has a large number of holes.
Since the infrared radiation porous plate and the partition plate provided at the upper part of the storage tank for partitioning the heating part and the outlet and the exhaust duct are provided, it is put into the tank. The collected organic waste is heated by receiving radiant heat from the far-infrared radiation porous plate while being stirred, and at the same time, in the middle part of the storage tank.
Heated by conduction heat from a heating duct provided directly in contact with the bottom, and further heated by hot air blown out to the upper part of the tank, the organic waste in the storage tank is effectively heated by the above three types of multiple heating. Be heated.

Further, due to the discharge pressure of the blower for circulating hot air, the inside of the storage tank becomes a positive pressure, and the air and water vapor in the tank can be appropriately discharged from the exhaust duct. Therefore, as in the case of forced exhaust with conventional equipment,
Outside air is not sucked through a gap such as a take-out hatch to cause a significant temperature difference in the tank, and uneven drying or uneven fermentation can be prevented.

Further, in the vicinity of the exhaust port of the exhaust duct, the radiant heat and hot air of the heater are blocked by the partition plate, so that the release of thermal energy from the exhaust duct can be suppressed. Further, since the exhaust gas passes through the high temperature atmosphere and is discharged by the partition plate, the deodorizing effect can be enhanced.

Thus, according to the processing apparatus of the present invention,
Even if the organic waste is food waste having a high water content, it can be efficiently and quickly heated and dried or fermented, and the deodorizing effect can be enhanced.

[Brief description of drawings]

FIG. 1 is a front view of an organic waste treatment device.

FIG. 2 is a right side view of the same.

3 is a sectional view taken along line III-III in FIG.

4 is a sectional view taken along line IV-IV in FIG.

[Explanation of symbols]

 1-accommodation tank, 6- heating duct, 12- heater, 15- circulation duct, 16- blower, 17- blowout port, 18- air supply port, 25- exhaust duct, 27- partition plate.

Claims (1)

[Claims] 1. A charged hatch of organic waste, into housing tank having extraction hatch and the exhaust duct, a heater and a stirrer mechanism for the stirring blade rotation driving heating the container tank is disposed, organic In an organic waste treatment apparatus for drying or fermenting waste while heating and stirring, a heating duct part communicating with the upper part of the storage tank and formed along the side wall and bottom wall of the storage tank. And having a blower for circulating hot air, one end of which is connected to the bottom of the heating duct section and the other end of which is connected to an outlet provided at the top of the storage tank to suck in the warm air of the heating duct section. A circulation duct for circulating the warm air, an air supply port provided in the suction side circulation duct of the blower for supplying outside air, and an upper portion of the storage tank.
Mount it so that it surrounds the heating part of the heater provided.
And a far-infrared radiation porous plate having a large number of holes, and a partition plate provided in the upper part of the storage tank to partition the heating section and the outlet from the exhaust duct. An organic waste treatment device characterized by: