JP3673903B2 - Organic waste treatment equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an organic waste treatment apparatus for drying or fermenting organic waste such as garbage.
[0002]
[Prior art]
For example, when processing large amounts of leftover food such as lunch centers, caterers, restaurants, etc., collect them and place them in a storage tank where they are dried or fermented. In other words, garbage is fermented by the fermentation action of microorganisms, and these are effectively used as compost or the like.
[0003]
[Problems to be solved by the invention]
Conventionally, as this type of processing equipment, a heater is provided below the bottom of a storage tank for storing organic waste such as garbage, and hot air generated from the heater is brought into contact with the bottom of the storage tank, and the hot air is stored in the storage tank. An organic waste treatment apparatus provided with a blower and a duct to be supplied therein and provided with a stirring mechanism having a horizontal rotation shaft for stirring organic waste in a storage tank is known from Japanese Utility Model Laid-Open No. 5-22087. .
[0004]
Although this conventional organic waste treatment apparatus can dry or ferment organic waste relatively efficiently, when a combustion burner is used for the heater, the outside air intake is not in an appropriate location. The storage tank or the heating chamber is easily filled with combustion gas and water vapor from the garbage, adversely affecting the drying efficiency of the garbage, etc.If the blower stops due to a failure, hot air remains in the heating chamber, There was a problem damaging the heating chamber.
[0005]
The present invention has been made in order to solve the above-mentioned problems, and can efficiently heat the inside of a storage tank containing organic waste, dry or ferment the organic waste, and provide a blower for circulating hot air. An object of the present invention is to provide an organic waste treatment apparatus that can discharge hot air in a heating chamber even when a failure is stopped.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the organic waste treatment apparatus of the present invention is provided with a stirring device in a storage tank for storing organic waste, and heats the bottom of the storage tank and stores hot air generated from the heating. In an organic waste treatment apparatus that is introduced into a tank and dries or ferments organic waste, a heating chamber is provided surrounding the outside of the bottom of the storage tank, and an air passage is connected to the upper part of the heating chamber. An air inlet is provided in the upper part of the air passage, a combustion burner for heating the heating chamber is provided, and a porous cover for surrounding the combustion flame of the combustion burner is provided, and a blower and a duct accommodate hot air in the heating chamber. It connects so that it may send in a tank, and an exhaust duct is connected to the upper part of a storage tank, and is comprised.
[0007]
[Action / Effect]
In the organic waste treatment apparatus having such a configuration, organic waste such as garbage is put into the storage tank, the agitator in the tank is rotated, and at the same time, the combustion burner is operated to drive the blower. The heating chamber is heated by the combustion burner, and the heated air in the heating chamber is introduced into the storage tank through the duct by the operation of the blower, and the organic waste in the storage tank is directly heated from the bottom by the heating chamber and the blower and duct are Efficiently heated and dried by introducing hot air.
[0008]
At this time, since water vapor and air in the storage tank are exhausted from the exhaust duct at the top of the storage tank, the water vapor in the storage tank is well removed and drying is promoted. Further, in the heating chamber, hot air is averagely dispersed by a porous cover covering the combustion flame, and heating is performed satisfactorily. The On the other hand, when the blower is stopped due to failure, the hot air in the heating chamber goes up to the upper ventilation path. For example, the combustion burner is stopped by detecting the abnormal temperature of the temperature sensor provided there. Through the outside air inlet, no hot air remains.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0010]
1 is a front view of the organic waste treatment apparatus, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a longitudinal sectional view in a direction perpendicular to FIG.
[0011]
Reference numeral 1 denotes a storage tank for storing organic waste, which has a bottom having a semicircular curved surface, and is provided with an input hatch 2 at the top and a take-out hatch 3 at the bottom so as to be opened and closed. A heating chamber 4 is formed below the bottom of the storage tank 1 so as to surround the bottom of the storage tank 1 with a box-shaped metal plate.
[0012]
On the side of the heating chamber 4, a combustion burner 5 made of gas, oil or the like is attached so as to blow a combustion flame into the heating chamber, and a large number of holes are formed in a metal plate so as to cover the combustion flame of the combustion burner 5. The perforated cover 6 is disposed (FIG. 4). An air passage 7 communicating with the heating chamber 4 is formed in the side wall of the storage tank 1 above the heating chamber 4, and a porous plate 4 a is provided between the air passage 7 and the heating chamber 4, that is, above the heating chamber 4. Provided. An air inlet 9 is provided in the upper part of the air passage 7. The porous cover 6 is provided for dispersing hot air from the burner 5, and the porous plate 4 a is provided for holding hot air in the heating chamber 4.
[0013]
The outer walls of the heating chamber 4 and the storage tank 1 are covered with a heat insulating material 8 to form a heat insulating structure. Further, since the heating chamber 4 is disposed in contact with the bottom of the storage tank 1, the thermal conductivity with respect to the storage tank 1 is good, and the storage tank 1 has a structure that can efficiently receive the conduction heat from the heating chamber 4. is there.
[0014]
An air supply duct 11 is connected to the upper part of the storage tank 1 in order to blow hot air into the tank, and the air supply duct 11 is connected to the discharge side of the blower 10. The suction side of the blower 10 is connected to the lower part of the heating chamber 4 via the ventilation duct 12. An exhaust duct 13 for exhaust is connected to the upper part of the storage tank 1. Accordingly, by the operation of the blower 10, air enters the heating chamber 4 from the outside air introduction port 9 and is heated, and hot air is introduced into the storage tank 1 through the ventilation duct 12, the blower 10, and the air supply duct 11. The air and steam are exhausted through the exhaust duct 13.
[0015]
An organic waste stirring device 15 is disposed inside the storage tank 1. The stirring device 15 has a rotating shaft 16 horizontally supported at the center of the bottom of the tank (the center of the semicircular section), and a large number of stirring rods 17 project radially around the rotating shaft 16. A sprocket 18 configured and fixed to the end of the rotary shaft 16 is linked to a motor 19 via a chain, and is driven to rotate by the motor 19.
[0016]
A temperature sensor 20 is attached to the bottom of the storage tank 1. This temperature sensor 20 is a sensor for detecting the temperature in the bath. In order to minimize the heat effect in the heating chamber 4, the outside of the temperature sensor 20 is surrounded by a heat insulating material, and the outside is covered with a metal cover 22. ing. The temperature sensor 20 can be attached to the outer surface of the lower metal plate on the front side or the back side of the storage tank 1.
[0017]
Further, another temperature sensor 23 is installed on the perforated plate 4 a above the heating chamber 4. This temperature sensor 23 is a temperature sensor for emergency stop. When the blower 10 is stopped due to failure and the temperature of the heating chamber 4 rises abnormally, the combustion burner 5 is stopped by a detection signal from the temperature sensor 23. The temperature sensors 20 and 23 are connected to a temperature regulator in a control panel (not shown). The combustion burner 5, the blower 10 and the motor 19 are connected to this control panel, and their operation is controlled by the temperature detected by the temperature sensors 20 and 23.
[0018]
Next, the operation of the organic waste treatment apparatus having the above configuration will be described.
[0019]
Organic waste such as garbage to be treated is thrown into the storage tank 1 by opening the top hatch 2. And the motor 19 is started and the stirring rod 17 of the stirring apparatus 15 is rotated, and organic waste is stirred. At the same time, the combustion burner 5 in the heating chamber 4 is started to heat the inside of the furnace, the blower 10 is operated, and hot air in the heating chamber 4 is supplied into the storage tank 1.
[0020]
As a result, outside air is introduced into the ventilation path 7 from the outside air introduction port 9, enters the heating chamber 4 through the perforated plate 4 a, and is heated by the heat of the combustion burner 5. The hot air generated from the combustion burner 5 is well dispersed in the heating chamber 4 by the porous cover 6, and the amount of outside air introduced is appropriately adjusted by the porous plate 4 a above the heating chamber, so that the high temperature atmosphere in the heating chamber 4 is obtained. Is maintained well. The hot air in the heating chamber 4 is sent into the storage tank 1 through the ducts 12 and 11, and the organic waste in the tank is heated by receiving the hot air while being stirred.
[0021]
Further, since the heating chamber 4 is mounted in direct contact with the bottom of the storage tank 1, the heat of the combustion burner 5 is favorably conducted to the bottom of the storage tank 1, and the storage tank 1 is also heated by conduction heat from the bottom. Is done. And the water vapor | steam and gas which generate | occur | produced by the heating in a tank are exhausted from the exhaust duct 13 with air.
[0022]
During operation, the stirrer 15 is operated so that the rotating shaft 16 repeats normal rotation and reverse rotation at regular intervals, and the combustion burner 5 sets the temperature in the storage tank 1 to, for example, 80 based on the temperature detected by the temperature sensor 20. The combustion burner 5 is continuously turned on or off so as to be maintained at a constant temperature of 150 to 150 degrees, or the combustion burner 5 is continuously operated until a predetermined temperature is reached, and the organic waste in the storage tank 1 is dried.
[0023]
In this way, heating and agitation in the tank is effectively performed, and even organic wastes with a very high moisture content are heated relatively uniformly and efficiently. As a result, the moisture content is For example, it rapidly decreases from 80% to around 20%, its volume shrinks to around 50%, and the organic waste is dried.
[0024]
In the case of completely drying organic waste such as garbage, the processing is continued as it is, and in a completely dried state, the processing apparatus is stopped, and the extraction hatch 3 is opened to take out the dried organic waste.
[0025]
When organic waste is fermented, when the moisture content has reached an appropriate value, the operation of the treatment device is stopped, and the organic waste in a properly dried state is taken out of the storage tank 1, Put in another fermenter. When a separate fermenter is not used, fermenting bacteria are put into the tank after the drying treatment as described above is completed, and the heating of the combustion burner 5 is adjusted to maintain the temperature in the tank at the optimum fermentation temperature. Fermentation can also be performed.
[0026]
When the blower 10 is stopped during operation, the hot air is directed toward the perforated plate 4a. Therefore, the temperature sensor 23 detects the abnormal temperature, and the operation of the combustion burner 5 is immediately stopped. The hot air also escapes upward through the perforated plate 4a, the air passage 7, and the outside air introduction port 9, so that no hot air remains in the heating chamber and the inside of the heating chamber 4 can be prevented from being damaged.
[Brief description of the drawings]
FIG. 1 is a front view of an organic waste treatment apparatus showing an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of the apparatus.
FIG. 3 is a vertical sectional view in a direction perpendicular to FIG. 2;
FIG. 4 is a perspective view of a heating chamber.
[Explanation of symbols]
1-container tank 4-heating chamber 5-combustion burner 6 porous cover 7-ventilation passage 9-outside air inlet 10-blower 15-stirring device

Claims (2)

A stirrer is provided in the storage tank for storing the organic waste, and the bottom of the storage tank is heated and hot air generated from the heating is introduced into the storage tank to dry or ferment the organic waste. In waste treatment equipment,
A heating chamber is provided so as to surround the outside of the bottom of the storage tank, and an air passage is provided at the top of the heating chamber. An outside air inlet is provided at the top of the air passage to heat the heating chamber. A combustion burner is provided, and a porous cover is provided to surround the combustion flame of the combustion burner, and a blower and a duct are connected to send hot air in the heating chamber into the storage tank. An organic waste treatment apparatus characterized in that a duct is connected. The organic waste treatment apparatus according to claim 1, wherein a perforated plate is provided between the heating chamber and the air passage.

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