JPH09174026A - Garbage treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the decomposition velocity of a garbage and also enhance its decomposition efficiency by switching ON a heater upon the detection of a dumped garbage and switching OFF the heater after a garbage treating material reaches a specified temperature and maintaining the temperature for a few hours under control. SOLUTION: A face-shaped heater 17 is installed on the lower external face part of a garbage treating layer 1. This heater 17 shows the surface temperature of 80 deg.C or less, for example, at 200w. If a means 31 for detecting the dumping of a garbage detects the dumping of the garbage into the garbage treating layer 1, a detection signal is inputted to a control means, which is turn, switches ON a heater 17 to heat a garbage treating material. This heating process is controlled so that the temperature reaches 60 deg.C within 3-6 hours. In this case, the heater 17 should be switched ON immediately after the dumping of the garbage is detected. If the garbage treating material reaches 60 deg.C, the heater 17 is controlled in such a manner that it continues for 1-2 hours at 60 deg.C even after reaching this temperature, and the heater 17 is turned OFF after the lapse of 1-2 hours.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garbage disposal apparatus for decomposing garbage using the power of microorganisms.

[0002]

2. Description of the Related Art Conventionally, sludge containing organic matter and water has been decomposed (fermented) to the extent that it does not affect the environment by utilizing microorganisms. Are known. In this food waste processing device, a wood chip called a biochip (for example, Japanese Patent Publication No. 2-30760) is filled in a food waste processing tank as a food waste processing material. Raw garbage is put into the raw garbage treatment tank through an input port provided in the raw garbage treatment tank, and the microorganisms inhabiting the raw garbage processing material ferment the raw garbage to decompose it. When fermenting and decomposing by the action of microorganisms, the stirring means was rotated to supply oxygen into the food waste treating material.

[0003]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention In the above-mentioned conventional food waste disposal device, the food waste disposal material 2 after the food waste is loaded.
When the temperature was detected, the results shown in the graph of FIG. 5 were obtained. Here, in this measurement, as shown in FIG. 6, the temperature of the lower point A in the garbage processing tank 1 was measured, and the garbage processing material 2 was uniformly stirred by the stirring means 4. The outside air temperature at this time was 25 ° C.

As is clear from the graph of FIG. 5, the temperature of the raw garbage is 25 ° C. at the time of input, and thereafter, the garbage is decomposed by the action of the microorganisms inhabiting the raw garbage treating material. The temperature of the food waste treatment material reached a peak due to the heat of reaction when 8 hours had elapsed after the addition, and this temperature was 45 ° C. Then, after the peak temperature of 45 ° C., the temperature of the food waste treatment material is gradually decreased to 2
It will be 5 ° C. When the garbage is put in again, the same temperature change as above is repeated.

However, as described above, only the heat generated by the decomposition treatment of food waste by the microorganisms living in the food waste disposal material reaches only 45 ° C. after 8 hours, and the decomposition rate of organic matter is 70% on average. There was nothing else. Therefore,
The remaining 30% has a problem that it remains as an undecomposed material, resulting in poor processing efficiency and a long processing time. Furthermore, food poisoning bacteria such as Salmonella and Staphylococcus could not be sterilized at 45 ° C.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to accelerate the decomposition rate of food waste treatment, enhance the decomposition efficiency, and sterilize food poisoning bacteria with certainty. An object is to provide a food waste processing device.

[0007]

In order to solve the above-mentioned problems of the present invention, a food waste processing apparatus of the present invention decomposes food waste by a food waste processing material 2 placed in a food waste processing tank 1. In the food waste processing device 3, a stirring means 4 in the food waste processing tank and a temperature sensor 3 for detecting the temperature of the food waste processing material 2
0, and a heater 17 for heating the garbage processing tank,
After the raw garbage input detection means 31 for detecting the input of raw garbage into the raw garbage processing tank 1 is provided, the heater 17 is turned on by the detection of the input of raw garbage, and after the raw garbage processing material 2 reaches about 60 ° C. It is characterized by being provided with a control means 6 for controlling to turn off the heater 17 after holding at about 60 ° C. for several hours. With such a configuration, when food waste is thrown in, it is heated by the heater 17 to bring the food waste treatment material 2 to about 60 ° C. at which the activity of microorganisms is high to improve the decomposition rate of the food waste and to reduce organic matter. The decomposition rate can be increased to 80% or more on average. And the garbage processing material 2 is about 6
By maintaining the temperature at about 60 ° C. for several hours after reaching 0 ° C., food poisoning bacteria such as Salmonella and Staphylococcus can be surely sterilized.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments shown in the accompanying drawings. FIG. 1 is a perspective view showing the whole of the food waste processing apparatus 3, and a food waste processing tank 1 having an upper opening is internally provided in a case 8 having an upper opening of the food waste processing apparatus 3. A stirring blade that constitutes the stirring means 4 is rotatably provided inside the garbage processing tank 1. The stirring blade is rotated by the motor 7, and the rotation of the motor 7 is controlled by the control means 6. Raw garbage processing material 2 with stirring means 4
By agitating, the oxygen is evenly supplied to the raw garbage processing material 2 located in the lower portion of the raw garbage processing tank 1 and the raw garbage is evenly dispersed and mixed in each part of the raw garbage processing tank 1. There is.

An upper end opening of the case 8 serves as a loading port, and a lid 9 for loading food waste is provided in the loading port, which is rotatable about a shaft mounting portion at a rear end and can be opened and closed. There is. The case 8 has a lid opening / closing detection means 31 for detecting opening / closing of the lid 9.
a is provided, and a detection signal of opening / closing of the lid 9 is input to the control means 6. Here, the lid opening / closing detection means 31 constitutes the food waste input detection means 31 for detecting the input of food waste into the food waste processing tank. That is, since the lid 9 is always opened and thrown in to throw in the garbage, and the lid 9 is closed after throwing in, the lid opening / closing detection means 31a indicates that the lid 9 is opened → closed.
If it is detected in, the garbage is considered to have been thrown in.

At the opening edge of the upper end of the case 8, the air duct 1
0 is provided, one end of the air passage 10 is opened to the outside of the case 8, and the other end is opened to the upper end opening of the garbage processing tank 1. An air blower fan 11 and a heater 1 are provided in the air blow passage 10.
2, the blower fan 11 and the heater 12 are controlled by signals from the control means 6. The blower fan 11 supplies fresh oxygen into the food waste processing tank 1 by supplying outside air into the food waste processing tank 1.

An exhaust passage 13 is provided in the case 8,
The exhaust passage 13 has one end opening to the upper end opening of the garbage processing tank 1 and the other end opening to the outside of the case 8. An exhaust fan 14 is installed inside the exhaust passage 13, and the exhaust fan 14 is controlled by a signal from the control means 6. The exhaust fan 14 is for exhausting gas and moisture generated by decomposition of carbon dioxide gas, ammonia, etc. generated in the garbage processing tank 1 to the outside.

In the garbage disposal tank 1, a garbage disposal material 2 made of a carrier such as sawdust-like wood chips called a biochip in which microorganisms inhabit is placed. As the raw garbage processing material 2, conventionally known wood chips (for example, Japanese Patent Publication No. 2
No. 30760) can be used. A heater 17 having a sheet shape is provided on the outer surface of the lower portion of the garbage processing tank 1. The heater 17 has a heater surface temperature of, for example, 200 W and a surface temperature of 80.
Use the one below ℃.

A temperature sensor 30 for detecting the temperature of the raw garbage processing material 2 is provided at a point A shown in FIG. 4 in the lower portion of the raw garbage processing tank 1. The temperature information at the lower point A in the inside (that is, the temperature of the food waste disposal material 2 at the point A) is input to the control means 6. FIG. 2 shows a control block diagram of the present invention. When the food waste input detecting means 32 detects the input of food waste into the food waste processing tank 1, a detection signal is input to the control means 6 and the control means. The heater 17 is turned on by 6 to heat the food waste processing material 2 and the temperature is controlled to reach 60 ° C. in 3 to 6 hours (in this case, the heater 17 is turned on immediately after detecting the input of food waste). 6 for garbage processing material 2
When the temperature reaches 0 ° C., the temperature is controlled to be kept at 60 ° C. for 1 to 2 hours, and then the heater 17 is controlled to be turned off.

FIG. 3 is a graph showing the relationship between the time and temperature of food waste processing in the present invention and the relationship between time and temperature of food waste processing in the conventional example. In FIG. 3, the solid line indicates the present invention, and the alternate long and short dash line indicates the conventional example. In FIG. 3, the arrow indicates the point of time when garbage is loaded. As is apparent from this graph, the heater 17 is turned on by detecting the input of food waste as in the present invention, and the food waste disposal material 2 has about 60
Heater 1 after holding at 60 ℃ for several hours after reaching ℃
It can be understood that the present invention in which 7 is turned off has a higher processing speed for food waste than the conventional example. It was also found that by setting the food waste treatment material 2 to about 60 ° C. at which the activity of microorganisms is high, the decomposition treatment speed of the food waste can be improved and the decomposition efficiency of organic substances can be increased to about 80% or more on average.

Further, it has been proved that the food waste treating material 2 is stably kept at about 60 ° C. for several hours (for example, 1 to 2 hours) to surely sterilize food poisoning bacteria such as Salmonella and Staphylococcus. .

[0016]

According to the present invention, as described above, in the food waste disposing device for decomposing food waste by the food waste disposing material placed in the food waste disposing tank, the stirring means is provided in the food disposing tank. And a temperature sensor that detects the temperature of the raw garbage processing material, a heater that heats the raw garbage processing tank, and a garbage input detector that detects the input of garbage into the garbage processing tank. Since the heater is turned on by detecting the throwing in of garbage and the heater is turned off after holding the temperature of about 60 ° C for several hours after the temperature of the garbage processing material reaches about 60 ° C, there is provided a control means. About 6 high microbial activity
The decomposition rate of food waste can be increased at 0 ° C and the decomposition efficiency can be improved.
It can be stably maintained at a temperature of several hours for several hours to surely sterilize food poisoning bacteria such as Salmonella and Staphylococcus and to perform sanitary treatment.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing the entire garbage processing apparatus of the present invention.

FIG. 2 is a control block diagram of one embodiment of the above.

FIG. 3 is a graph showing the relationship between the time and temperature of raw garbage processing in the present invention and the relationship between time and temperature of raw garbage processing in the conventional example.

FIG. 4 is a drawing showing a temperature detection point of a food waste processing material in the present invention, (a) is a front view, and (b) is a side view.

FIG. 5 is a graph showing the relationship between temperature and temperature of the conventional garbage processing.

6 is a drawing showing the temperature detection points of the food waste treating material in obtaining the graph of FIG. 5, (a) being a front view, FIG.
(B) is a side view.

[Explanation of symbols]

 1 Garbage Disposal Tank 2 Garbage Disposal Material 3 Garbage Disposal Device 4 Stirring Means 6 Control Means 17 Heater 30 Temperature Sensor 31 Garbage Input Detection Means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiaki Sato 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd. (72) Shigeyuki Yamaguchi, 1048, Kadoma, Kadoma City, Osaka Matsushita Electric Co., Ltd. 72) Inventor Akio Kubota 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (1)

[Claims] 1. A food waste processing device for decomposing food waste by a food waste processing material placed in a food waste processing tank, the temperature for detecting the temperature of the stirring means and the food waste processing material in the food waste processing tank. A sensor is provided, a heater is provided to heat the garbage processing tank, a garbage input detection unit is provided to detect the insertion of garbage into the garbage processing tank, and the heater is turned on when the garbage is detected, A food waste processing apparatus comprising a control means for controlling to turn off the heater after holding the temperature of about 60 ° C. for several hours after the temperature of the waste processing material reaches about 60 ° C.