JPH09314102A - Apparatus for processing garbage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for processing garbage wherein the water content of a carrier in a processing tank is accurately measured to precisely control the water content to easily control the environment to allow microorganisms to act easily, so that garbage can be decomposed efficiently. SOLUTION: In this apparatus for processing garbage, a carrier 2 is filled in a processing tank 1 and charged garbage is stirred and mixed together with the carrier 2 to be decomposed. An intake port 3 and an exhaust port 4 are provided to the processing tank 1 at positions higher than the level of the carrier 2 where the carrier 2 is filled. In the processing tank 3 is provided a partition plate 5 whose lower end is embedded in the carrier 2 and that is for leading fresh air introduced from the intake port 3 into the carrier 2. A humidity sensor 6 for measuring the humidity of the fresh air passing through the carrier 2 is provided on the side of the exhaust port 4.

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 for decomposing food waste such as rubbish generated in general households with microorganisms.

[0002]

2. Description of the Related Art In recent years, an apparatus for treating food waste which decomposes and disposes of food waste by the action of microorganisms has attracted attention and has been often used. Such a garbage processing device
A culture substrate suitable for the propagation and growth of microorganisms such as wood chips is put in the treatment tank 1 as the carrier 2, and the garbage is put into the treatment tank 1 for decomposition treatment. According to such an apparatus for treating food waste, the food waste is almost completely decomposed into carbon dioxide and water and does not remain, so that the labor for disposing of the food waste can be saved and the food waste can be easily treated.

[0003] In most cases, such a garbage treatment device is equipped with a stirring device in the treatment tank 1, and the water content of the carrier 2 is kept constant so as to be suitable for the growth of microorganisms. It is equipped with a moisture detecting device, a temperature control device, and the like.

As such a conventional moisture detecting device,
As shown in FIG. 4, there is an example in which a heater 11 and a thermistor 12 which are substantially in contact with the carrier 2 are provided on the inner wall surface of the processing tank 1, and the water content is measured from the temperature rise value of the heater.

Further, as another moisture detecting device, as shown in FIG. 6, an exhaust fan is provided in the processing tank 1 to form a ventilation flow path on the carrier 2, and an outlet B and an inlet A in this ventilation flow path are provided. There is also an example in which the water vapor pressure is measured with and the water content is measured from the difference Pb-Pa in the water vapor pressure between the outlet B and the inlet A.

[0006]

However, in the measurement of the water content of FIG. 4 in the above-mentioned conventional example, as shown in FIG. 5, in the region of the water content of about 60% or more, the temperature rise of the heater 11 causes the change of the water content. Although it is more noticeable and has higher sensitivity than the above, the sensitivity is low at 30 to 40% which is the range of the water content suitable for this type of food waste treatment device, and the measurement accuracy may be insufficient. Is.

Also in the water content measurement of FIG. 6, since the difference Pb-Pa in water vapor pressure is small at the ventilation flow rate in the normal operation, the detection sensitivity is low and the measurement accuracy may be insufficient. .

The present invention has been made to solve the above problems, and its purpose is to accurately measure the water content of the carrier in the treatment tank to control the water content with high precision, An object of the present invention is to provide an apparatus for treating food waste, which can be easily controlled in an environment where microorganisms can easily act, and therefore can decompose food waste efficiently.

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 is to fill a carrier 2 in a processing tank 1 and stir and mix the introduced garbage with the carrier 2 to decompose it. In the food waste processing apparatus, an intake port 3 and an exhaust port 4 are provided in the processing tank 1 located above the height at which the carrier 2 is filled, and the lower end portion thereof is buried inside the carrier 2.
A partition plate 5 for guiding the air introduced from the intake port 3 to the inside of the carrier 2 is provided in the processing tank 1, and a humidity sensor 6 for measuring the humidity of the air passing through the inside of the carrier 2 is provided on the exhaust port 4 side. Is configured as a feature.

In such a garbage processing device, the intake port 3
The air introduced from the inside of the carrier 2 passes through the inside of the carrier 2,
The water contained in the carrier 2 evaporates, and the free water of the carrier 2 and the water vapor contained in the air approach an equilibrium state. Therefore, by measuring the humidity of this air, the amount of free water held by the carrier 2 can be measured as the water content. In this case, the measurement of the free water held by the carrier 2 by the humidity sensor 6 is controlled from 30 to 30.
The sensitivity is high in the region of 40% water content.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the partition plate 5 is provided adjacent to the side wall of the processing tank 1.

In such a food waste processing apparatus, since the partition plate 5 is adjacent to the side wall of the processing tank 1 and an area widely opened to the central portion side of the processing tank 1 is obtained, the garbage is put in from above. It's easier to do.

[0013] The invention according to claim 3 is the invention according to claims 1 and 2.
In any one of the inventions described above, an intake port 3 is provided on one side wall of the processing tank 1, and an exhaust port 4 is provided on a tank wall on a side substantially facing the intake port 3. I am configuring.

In such a garbage processing device, the processing tank 1
In the process of air flowing from one side to the other side that is almost opposite,
The water contained in the carrier 2 is evaporated, and the free water of the carrier 2 and the water vapor contained in the air are in equilibrium. In this case, the partition plate 5 can be provided only on one side portion, and the portion excluding this one side portion is widely opened, which makes it easy to throw in garbage from above.

The invention according to claim 4 is the invention according to claim 1 or 2.
In any one of the inventions described above, it is characterized in that an intake port 3 is provided on each of both side walls of the processing tank 1 which are substantially opposed to each other, and an exhaust port 4 is provided on the upper surface side of the processing tank 1. .

In this case, the intake port 3 is not limited to the side walls,
It can also be provided all around the side wall.

In such a garbage processing device, the processing tank 1
In the process in which air flows from the side wall of the carrier to the central part of the processing tank 1, the water contained in the carrier 2 is evaporated, and the free water of the carrier 2 and the water vapor contained in the air are in equilibrium. In this case, since the air flows in from the periphery of the processing tank 1, this air can flow in the carrier 2 substantially uniformly.

[0018]

FIG. 1 shows a first embodiment of the present invention.
Alternatively, it will be described below with reference to FIG.

FIG. 1 is a schematic cross-sectional view schematically showing the garbage processing device in this embodiment. FIG. 2 is a graph diagram schematically showing the relationship between the humidity detected by the humidity sensor 6 and the water content of the carrier 2 in the same garbage treatment device.

As shown in FIG. 1, this food waste processing apparatus is one in which a carrier 2 is filled in a processing tank 1 and the introduced food waste is decomposed by stirring and mixing with the carrier 2. As the carrier 2, a wood chip subjected to a special treatment is most suitable, but it is not particularly limited. It is preferable to use a material that has a suitable amount of voids and that appropriately holds moisture and air and that can provide an environment in which microorganisms that decompose food waste can be actively activated.

In this type of food waste processing apparatus, maintaining an environment in which microorganisms can be actively active is an essential requirement for efficiently decomposing food waste, and for supplying fresh air. Appropriate agitation, ventilation to maintain proper water content and proper temperature maintenance are required. For this reason, this food waste treatment device is also equipped with a device for controlling the temperature inside the treatment tank 1 and for monitoring the water content, so that the air supply, the temperature and the water content are adjusted so as to be suitable for the growth of microorganisms. Are adjusted so that decomposition of food waste by microorganisms can be efficiently and surely performed.

Among the above-mentioned requirements, it is important to control the water content, and controlling the water content to be about 30 to 40% will increase the activity of microorganisms and efficiently decompose food waste. It is a common condition.

In the food waste processing apparatus shown in FIG. 1, for the above management, the stirring blade 7 is provided so that the carrier 2 and the introduced food waste are well mixed. Further, in the figure, 3 is an intake port, and 4 is an exhaust port provided with an exhaust fan 4a. The intake port 3 and the exhaust port 4 are provided in the processing tank 1 above the height at which the carrier 2 is filled, and in the example of this figure, they are provided especially at the upper end of the side wall of the processing tank 1. ing.

Reference numeral 5 is a partition plate for guiding the air introduced from the intake port 3 into the carrier 2. The partition plate 5 is provided adjacent to the side wall of the processing tank 1 on the side of the exhaust port 3 and hangs down from the upper surface of the processing tank 1, and the lower end thereof is embedded in the carrier 2. . A humidity sensor 6 is attached to the exhaust port 4, and the humidity sensor 6 is a general one used for detecting relative humidity.

As shown in FIG. 2, in such a humidity sensor 6, the curve of relative humidity with respect to the water content is steep in the water content range of 30 to 40%. In other words, such a moisture content is a range to be controlled in order to efficiently decompose the food waste, and the humidity sensor 6 is preferable because the measurement in this range can be performed with high sensitivity. Is.

The air taken in through the intake port 7 by the partition plate 5 as described above is once introduced into the carrier 2 and is sucked by the exhaust fan 4a, as shown by the arrow in the figure, and the exhaust port is opened. To the inside of carrier 2 and carrier 2
It moves in the upper space and is discharged from the exhaust port 4. At this time, since the water contained in the carrier 2 is carried away by this air, the excess water adhering to the thrown food waste is discharged and the water content is controlled to an appropriate water content.

That is, when the water content of the carrier 2 is too high, the water content can be lowered by stirring and ventilating and heating, and when the water content is sufficiently low, the agitation or ventilation is reduced. By performing operations such as
The microbial activity is activated to manage the decomposition of food waste efficiently. Therefore, it is necessary to accurately measure the water content of the carrier 2 in order to perform the above-mentioned management accurately.

Therefore, in order to perform such moisture management accurately, in the food waste processing apparatus of this embodiment, the carrier 2 is used.
A humidity sensor 6 is provided at a position where the relative humidity of the air that has passed through can be measured. Specifically, it is attached to the exhaust fan 4a of the exhaust port 4. This humidity sensor 6
In the process of passing through the inside of the carrier 2, the air measured in 1 is in a substantially equilibrium state with the free water of the carrier 2 and the water vapor contained in this air. Therefore, by measuring the humidity of this air, the amount of free water held by the carrier 2 can be measured as the water content. The measurement of the free water held by the carrier 2 by the humidity sensor 6 in this case has high sensitivity in the region of the water content of 30 to 40% to be controlled.

Therefore, the water content of the carrier 2 in the processing tank 1 can be accurately controlled to easily control the environment in which microorganisms are active, and the food waste can be efficiently decomposed. -ing

Further, since the partition plate 5 is adjacent to the side wall of the processing tank 1, a wide open area can be obtained on the central side of the processing tank 1, which makes it easy to throw in garbage from above. It is what

A second embodiment of the present invention will be described below with reference to FIG. FIG. 3 is a schematic sectional view schematically showing this food waste processing device.

As shown in this figure, in this food waste processing apparatus, unlike the first embodiment, intake ports 3 are provided on both side walls of the processing tank 1 which are substantially opposed to each other, and the processing tank 1 is also provided. The exhaust port 4 is provided on the upper surface side of the, and the humidity sensor 6 is provided in the exhaust port 4 portion.

In such a food waste treating apparatus, unlike the first embodiment, moisture contained in the carrier 2 in the process of air flowing from the side wall of the treating tank 1 to the central portion of the treating tank 1. Are evaporated and the free water of the carrier 2 and the water vapor contained in the air are in equilibrium. In this case, since the air flows in from the periphery of the processing tank 1, this air can flow in the carrier 2 substantially uniformly. In other words, this air flows evenly from the periphery inside the carrier 2, so that the carrier 2
The humidity corresponding to the total water content is measured, and the accurate water content of the carrier 2 is obtained.

If the intake port 3 is provided not only on both side walls of the opposing portion but also on the entire periphery of the side wall and air is introduced from the entire periphery, the water content representing the entire carrier 2 can be measured more. can do.

[0035]

According to the first aspect of the present invention, the amount of free water held by the carrier can be measured as the water content by measuring the humidity of the air passing through the inside of the carrier.
In this case, the measurement of free water held by the carrier by the humidity sensor has high sensitivity in the region of water content of 30 to 40% to be controlled.

Therefore, the water content of the carrier in the treatment tank can be accurately controlled to easily control the environment in which the microorganisms are likely to act, and therefore the garbage can be decomposed efficiently.

Further, since the water content can be accurately measured while ventilating, the water content of the carrier in the treatment tank can be controlled more accurately while evaporating the water content by ventilation.

According to the second aspect of the present invention, since the partition plate is adjacent to the side wall of the processing tank, the central portion of the processing tank is wide open, and it is easy to throw garbage into the wide area from above. .

According to the third aspect of the present invention, the humidity of the air passing from one side portion of the treatment tank to the other side portion that is substantially opposite is measured to determine the amount of free water held by the carrier as the water content. Can be measured. In this case, the partition plate has only one side portion, and the portion excluding this one side portion is widely opened, and it is easy to throw food waste into this wide area from above.

According to the fourth aspect of the present invention, the amount of free water retained by the carrier is determined by measuring the humidity of the air that has entered the carrier from the side wall of the process tank and has flowed above the central portion of the process tank. Can be measured as In this case, since air enters from the periphery of the treatment tank, it flows uniformly from the periphery to the center inside the carrier, the humidity corresponding to the moisture content of the entire carrier is measured, and the accurate moisture content is obtained.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view schematically showing a food waste processing device according to a first embodiment of the present invention.

FIG. 2 is a graph diagram schematically showing the relationship between the relative humidity detected by a humidity sensor and the water content of the carrier in the above-mentioned food waste disposal system.

FIG. 3 is a schematic cross-sectional view schematically showing a food waste processing device according to a second embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view showing a conventional food waste processing device.

FIG. 5 is a graph diagram schematically showing the relationship between the temperature rise of the heater and the moisture content of the carrier in the humidity detecting device of the conventional garbage processing device.

FIG. 6 is a schematic cross-sectional view showing a conventional food waste processing device.

[Explanation of symbols]

 1 processing tank 2 carrier 3 intake port 4 exhaust port 5 partition plate 6 humidity sensor 7 stirring blade 11 heater 12 thermistor

Front page continuation (72) Inventor Hideaki Yamada 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (4)

[Claims] 1. In a food waste processing apparatus for filling a carrier into a processing tank and stirring and mixing the introduced food waste together with the carrier, the food waste is sucked into a processing tank located above a height at which the carrier is packed. An opening and an exhaust port are provided, and the lower end portion is embedded in the carrier, and a partition plate for guiding the air introduced from the intake port to the inside of the carrier is provided in the treatment tank and passed through the inside of the carrier on the exhaust port side. A food waste processing device comprising a humidity sensor for measuring the humidity of air. 2. The garbage processing apparatus according to claim 1, wherein a partition plate is provided adjacent to a side wall of the processing tank. 3. The process chamber according to claim 1, wherein an intake port is provided on one side wall of the processing chamber, and an exhaust port is provided on a chamber wall substantially opposite to the intake port. The garbage processing device described in the crab. 4. The processing tank according to claim 1, wherein an intake port is provided on each of both side walls of the processing tank which are substantially opposed to each other, and an exhaust port is provided on an upper surface side of the processing tank. Raw garbage processing equipment.