JPH06142634A - Organic waste processing device - Google Patents

Abstract

PURPOSE:To provide the organic waste processing device which can execute efficiently a drying or fermentation processing of organic waste such as garbage by using an electric heater or an infrared-ray heater. CONSTITUTION:A hot air passage chamber 5 is provided so as to surround the outside extending from a back wall of a containing tank 1 to its bottom part. In the upper part of the back wall of the containing tank 1, a through hole 6 for allowing the hot air passage chamber 5 and the containing tank 1 to communicate with each other is provided, and an electric heater 7 is attached so as to come into contact with the outside surface of a bottom part of the containing tank in the hot air passage chamber 5. An air blower 10 is provided so as to exhaust hot air in the upper part in the containing tank, a suction side of the air blower 10 is allowed to communicate and connected with the hot air passage chamber 5 through a duct 12, and an outside air leading-in port 14 is provided in a part of the duct.

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 drying or fermenting organic waste such as garbage.

[0002]

2. Description of the Related Art The inventor of the present invention has heretofore used a device for efficiently drying or fermenting a large amount of organic waste such as raw garbage discharged from a restaurant or the like, which has been conventionally used under the bottom of a storage tank for storing organic waste. A hot air generating furnace is installed on the side, a hot air from the hot air generating furnace is brought into contact with the bottom of the storage tank, and a blower that blows the hot air from the hot air generating furnace into the storage tank is installed, and the organic waste is stirred in the storage tank. An organic waste treatment device provided with a stirring mechanism has been proposed (see Japanese Patent Laid-Open No. 4-180880).

[0003]

However, in this organic waste treatment apparatus, when the heat source of the hot air generating furnace is a combustion burner, hot air having a large heat quantity is brought into contact with the bottom of the storage tank,
Although it is possible to efficiently heat the inside of the tank, when using an electric heater as the heat source, there was a problem that the amount of hot air was less than the combustion burner, the heating efficiency was low, and the efficiency of drying and fermentation could not be increased. .

The present invention has been made in view of the above points, and treats organic waste such as food waste efficiently by using an electric heater or an infrared heater to dry or ferment the organic waste. The purpose is to provide a device.

[0005]

In order to achieve the above object, in the organic waste treatment apparatus of the present invention, a stirring mechanism is provided in a storage tank for storing organic waste, and the bottom of the storage tank is heated. In an organic waste treatment device for introducing hot air generated by heating into the storage tank to dry or ferment the organic waste, in the hot air passage chamber so as to surround the outside from the rear wall to the bottom of the storage tank. Is provided, a circulation hole that connects the hot air passage chamber and the storage tank is provided in the upper part of the back wall of the storage tank, the electric heater is attached to the outer surface of the bottom of the storage tank in the hot air passage chamber, and the blower is installed. It is characterized in that it is arranged so as to eject hot air in the upper part of the storage tank, the suction side of the blower is communicated and connected to the hot air passage chamber through a duct, and an outside air inlet is provided in a part of the duct. .

[0006]

[Operation / Effect] Organic waste such as garbage is put into the storage tank, the stirring mechanism is rotated, and at the same time, the electric heater is activated and the blower is operated. By the operation of the electric heater, the bottom of the storage tank is heated to a predetermined temperature, and the organic waste in the storage tank is heated. Further, the air in the hot air passage chamber is heated by the electric heater, and the heated hot air is sent to the upper part of the storage tank through the duct by the operation of the blower and jetted into the tank. As a result, most of the air in the tank enters the hot air passage chamber from the storage tank, and circulates so as to return to the storage tank via the duct and the blower.

At this time, the outside air is introduced from the outside air introduction port provided in the suction side duct of the blower, and the pressure in the tank becomes a positive pressure, so that the gas such as water vapor in the tank is efficiently exhausted through the exhaust duct, Even when an organic waste having a high water content is added, its water content is satisfactorily discharged and drying is promoted. Further, also during fermentation, it is possible to bring the water content state suitable for fermentation relatively quickly.

Further, since the bottom of the storage tank is heated by the electric heater arranged in contact with the outside thereof and is surrounded by the hot air passage chamber, the heat of the electric heater is satisfactorily conducted to the storage tank. Even with an electric heater having a relatively small amount of heat, organic waste can be dried or fermented with high heating efficiency.

[0009]

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

FIG. 1 is a right side view of the processing apparatus, FIG. 2 is a vertical sectional view of the processing apparatus, and FIG. 3 is a vertical sectional view of FIG. Reference numeral 1 denotes a storage tank for containing organic waste, which is formed in a box shape having a semicircular cross section and a semicylindrical surface-shaped bottom.
A hatch 2 for loading is provided at the top, and a hatch 3 for removal is provided at the bottom so as to be openable and closable.

A cover wall 4 is attached so as to surround the rear part of the bottom of the container except the take-out hatch 3 and the rear side of the container 1, and between the cover wall 4 and the wall of the container 1, that is, A hot air passage chamber 5 is formed on the outside of the storage tank 1 from the back side to the bottom. The wall portion on the back side of the storage tank 1 is formed with a circulation hole 6 for communicating the inside of the tank with the hot air passage chamber 5 and passing hot air.

Further, a large number of electric heaters 7 are mounted below the bottom of the storage tank 1 in the hot air passage chamber 5 so as to be in direct contact with the bottom. The heat insulating material 8 is attached to the wall portion of the storage tank 1 and the outside of the cover wall 4 and the back surface side of the electric heater 7. The temperature sensor 9 is attached to the bottom of the storage tank 1, and the detection signal of the temperature sensor 9 is input to a control circuit (not shown) of the electric heater 7 to control the current or voltage to the electric heater 7 to control the temperature. It is a structure to do.

Reference numeral 10 denotes a blower provided with a motor-driven multi-blade radial fan in a casing. A discharge side of the blower 10 is connected and connected to an upper part of the storage tank 1 through a duct 11, and a suction side of the blower 10 is provided. Is communicated and connected to the lower part of the hot air passage chamber 5 via the duct 12.

Therefore, by the operation of the blower 10, the hot air in the hot air passage chamber 5 is sucked through the duct 12, and the hot air is blown inward from the upper part of the storage tank 1 through the duct 11 and through the circulation hole 6 into the tank. Air enters the hot air passage chamber 5 and is circulated.

Further, an exhaust duct 13 for exhausting the gas in the tank is connected to the upper part of the storage tank 1, and a small-diameter outside air introduction port 14 is provided in a part of the duct 12 close to the blower 10. Therefore, by the operation of the blower 10, the gas corresponding to the amount sucked from the outside air introduction port 14 is discharged.
Exhausted from 3.

Inside the storage tank 1, an organic waste agitation mechanism 15 is arranged. The stirring mechanism 15 is configured by mounting a large number of stirring blades 17 around a rotary shaft 16 horizontally supported in the tank, and a sprocket 18 fixed to an end of the rotary shaft 16 is connected to a motor 19 via a chain. They are linked and driven to rotate by the motor 19.

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

Organic waste such as food waste to be treated is loaded into the storage tank 1 by opening the loading hatch 2 on the upper part. Then, the motor 19 is started to start the stirring blade 17 of the stirring mechanism 15.
Rotate and stir the organic waste in the tank. At the same time, the electric heater 7 is started to start heating, and the blower 10 is operated to circulate the air in the storage tank 1 through the hot air passage chamber 5 and the duct 12.

By the operation of the electric heater 7, the bottom of the storage tank 1 is heated to a predetermined temperature and the organic waste in the storage tank 1 is heated. The electric heater 7 heats the air in the hot air passage chamber 5, and the heated hot air is blown by the blower 10.
Is sent to the upper part of the storage tank through the duct 12 and jetted into the tank. As a result, most of the air in the tank enters the hot air passage chamber 5 from the storage tank 1 and circulates so as to return to the storage tank 1 via the duct 12 and the blower 10.

During such an operation, the outside air is introduced from the outside air introduction port 14 provided in the suction side duct of the blower 10, and the pressure in the tank becomes a positive pressure. Therefore, gas such as water vapor in the tank passes through the exhaust duct 13. Is efficiently exhausted, and even when an organic waste having a high water content is input, the water is satisfactorily discharged and the drying is promoted.

Further, since the bottom of the storage tank is directly heated by the electric heater 7 arranged in contact with the outside thereof and is surrounded by the hot air passage chamber, the heat of the electric heater 7 is satisfactorily conducted to the storage tank 1. However, even with an electric heater having a relatively small amount of heat, the organic waste can be dried with high heating efficiency.

Since the electric heater 7 is controlled by the control circuit based on the detection signal from the temperature sensor 7, the temperature of the bottom of the tank is maintained at a constant temperature (for example, about 80 degrees to about 150 degrees), for example, all day. Even when the device is operated, the device can be safely and automatically operated. Moreover, since the electric power can be inexpensive late-night electric power, it can be economically operated.

When the organic waste in the tank is dried by the operation of such a treatment apparatus and the desired water content is reached,
The operation is stopped, the extraction hatch 3 is opened, and the dried organic waste is taken out.

When the organic waste is fermented, when the water content of the treated product in the tank reaches a predetermined value, fermenting bacteria are put into the tank to continue the operation, The fermentation process is carried out while maintaining the temperature of 1 to the fermentation temperature.

FIG. 4 shows another embodiment. In this example, an infrared heater (infrared lamp) 27 that emits infrared rays is used as an electric heater. Infrared heater 27
Are arranged so as to irradiate infrared rays (including far infrared rays) toward the bottom of the storage tank 1 in the hot air passage chamber 5. The rest of the configuration is the same as that of the above embodiment, and the same reference numerals as above are given and the description thereof is omitted.

Even when such an infrared heater 27 is used, the bottom of the storage tank 1 and the hot air passage chamber 5 can be efficiently heated, and the organic waste can be dried and fermented well. You can

[Brief description of drawings]

FIG. 1 is a right side view of an organic waste treatment device showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the device.

FIG. 3 is a vertical cross-sectional view in the direction perpendicular to FIG.

FIG. 4 is a vertical cross-sectional view showing another embodiment.

[Explanation of symbols]

1-accommodation tank, 5-hot air passage chamber, 6-flow hole, 7-electric heater, 10-blower, 11, 12-duct, 13-exhaust duct, 14-outside air inlet, 15-stirring mechanism.

Claims (2)

[Claims] 1. A stirring mechanism is provided in a container for containing organic waste to heat the bottom of the container and to introduce hot air generated by the heating into the container to dry or dry the organic waste. In the organic waste treatment apparatus for fermentation treatment, a hot air passage chamber is provided so as to surround the outside from the rear wall to the bottom of the storage tank, and the hot air passage chamber and the storage are provided above the rear wall of the storage tank. A circulation hole that connects the tank is provided,
An electric heater is attached in contact with the outer surface of the bottom of the storage tank in the hot air passage chamber, and a blower is arranged so as to blow hot air to the upper portion of the storage tank, and the suction side of the blower is connected through a duct. An organic waste treatment apparatus, which is connected to and connected to the hot air passage chamber and has an outside air introduction port provided in a part of the duct. 2. The organic waste treatment device according to claim 1, wherein an infrared heater is arranged so as to irradiate the bottom of the storage tank with infrared rays.