JPH0857459A - Garbage treatment apparatus - Google Patents

Abstract

PURPOSE: To provide a garbage treatment apparatus capable of detecting the water content of a garbage treatment material to control the same to a proper state. CONSTITUTION: A garbage treatment apparatus is equipped with a treatment tank 1 receiving a garbage treatment material for the decomposition treatment of garbage and the stirring blades 2 arranged in the treatment tank 1. A negative characteristic thermistor 3 is arranged in the treatment tank 1 and a compression means 4 for compressing the garbage treatment material is provided in opposed relation to the negative characteristic thermistor 3.

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.

[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. This food waste treatment device is a wood waste as a food waste treatment material in which microorganisms called horror agents live in the treatment tank (for example, Japanese Patent Publication No. 2-10398).
No. 2, Tokuhei 2-30760, Jitsuhei 3-22385, etc.). Then, the garbage is put into the treatment tank through the inlet provided in the treatment tank, and the garbage processing material in which microorganisms inhabit and the garbage are mixed and the air is brought into contact to inhabit the garbage processing material. Decomposed by microorganisms that
At the same time, the water was allowed to evaporate. Japanese Utility Model Publication No. 5-88683 has been proposed as an apparatus for treating such garbage.

Further, in the garbage processing apparatus, one in which a stirring blade is provided in the processing tank has been proposed by Japanese Patent Laid-Open No. 4-4084.

[0004]

However, in the above-mentioned conventional example, when raw garbage is decomposed by microorganisms in the raw garbage treating material, water is generated, and when the water content of the raw garbage treating material is too high, There is a problem that the processing efficiency of waste is reduced. The present invention was made in view of the problems of the above-mentioned conventional example, and the purpose thereof is to accurately detect the water content of the food waste processing material and control it to an appropriate state. It is to provide a garbage processing device.

[0005]

In order to solve the problems of the above-mentioned conventional examples and to achieve the object of the present invention, the food waste processing apparatus of the present invention is provided with a food waste processing material for decomposing food waste. The processing tank 1 put in and the stirring blade 2 arranged in the processing tank 1.
And a negative characteristic thermistor 3 arranged in the treatment tank 1, and a compression means 4 for compressing the raw garbage processing material facing the negative characteristic thermistor 3. To do.

Further, the compression means 4 for the rotatable movable plate 21
The negative characteristic thermistor 3 is arranged on the surface facing the movable plate 2
It is also preferable that there is provided a return unit 1 which is collapsed by a pressure applied from the compression unit 4 at a certain level or more and returns so as to face the compression unit 4 when the pressure is released. Further, the negative characteristic thermistor 3 is arranged on the inner wall of the processing tank 1 facing the rotation locus of the tip of the stirring blade 2 of the processing tank 1, and the stirring blade 2 compresses the food waste processing material facing the negative characteristic thermistor 3. It is also preferable that the compression means 4 is used as the compression means 4.

It is also preferable to provide a water content adjusting means for adjusting the water content of the food waste treating material when the water content of the food waste treating material detected by the negative characteristic thermistor 3 is out of a certain range.

[0008]

According to the present invention having the above-mentioned structure, food waste is decomposed by microorganisms in the food waste treatment material to generate water,
The raw garbage processing material absorbs the water to increase the water content, and the raw garbage processing material having the higher water content has a negative characteristic thermistor 3.
When it comes into contact with, the heat dissipation of the negative characteristic thermistor 3 increases, the temperature decreases, and the resistance increases and the voltage increases. Therefore, by detecting this voltage, the water content of the food waste treatment material can be detected. Based on this, the water content of the food waste treatment material can be adjusted. In this case, air exists between the food waste processing materials, and the presence of this air indirectly releases heat from the negative characteristic thermistor 3 due to the moisture contained in the food waste processing material, and the negative characteristic thermistor 3 detects the voltage. Is not sensitive, but the compression means 4 for compressing the food waste material facing the negative characteristic thermistor 3 is provided, so that when the negative characteristic thermistor 3 detects, the compression means 4 positions the portion opposite the negative characteristic thermistor 3. It is possible to compress the raw garbage processing material to expel the air, so that heat release from the negative characteristic thermistor 3 due to the moisture contained in the raw garbage processing material can be performed sensitively.

Further, the compression means 4 for the rotatable movable plate 21
The negative characteristic thermistor 3 is arranged on the surface facing the movable plate 2
The reference numeral 1 is provided with a restoring means which is collapsed by a certain pressure or more applied from the compression means 4 and returns so as to face the compression means 4 when the pressure is released. Therefore, the compression means 4 arranges the negative characteristic thermistor 3. The food waste treatment material located in front of the movable plate 21 is compressed, the water content of the food waste treatment material is detected by the negative characteristic thermistor 3, and pressure is further applied by the compression means 4 to move when the pressure exceeds a set constant pressure. The food waste processing material that has fallen down and is positioned in front of the movable plate 21 and provided for detection is removed from the front of the movable plate 21. After that, when the compression by the compression means 4 is released, the movable plate 2 is returned by the return means.
1 returns to the position facing the compression means 4, and another fresh food waste disposal material is located in front of the movable plate 21. As a result, a new food waste treatment material can be detected as a test body each time the negative characteristic thermistor 3 detects it.

Further, the negative characteristic thermistor 3 is provided on the inner wall of the processing tank 1 facing the rotation locus of the tip of the stirring blade 2 of the processing tank 1.
And the stirring blade 2 is the compression means 4 for compressing the food waste treatment material facing the negative characteristic thermistor 3, the agitation blade 2 for stirring and mixing the food waste and the food waste treatment material is used. The compression means 4 can also be used as
The device can be simplified.

Further, by providing the water content adjusting means A for adjusting the water content of the food waste treatment material when the water content of the food waste treatment material detected by the negative characteristic thermistor 3 is out of a certain range, Based on the water content of the food waste treating material detected by the negative characteristic thermistor 3, the water content adjusting means A can easily adjust the water content to the optimum water content.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. 1 and 2 are drawings showing the whole of the apparatus, in which a processing tank 1 having an upper opening is internally provided in a case 6 having an upper opening of the food waste processing apparatus. The stirring blade 2 is rotatably installed inside. The stirring blade 2 is rotated by the motor 7, and the rotation of the motor 7 is controlled by the controller 8.

A lid 1 is openably and closably attached to the upper opening of the case 6.
5 is provided. An air blow passage 9 is provided at an opening edge portion of the upper end portion of the case 6, one end portion of the air blow passage 9 is opened to the outside of the case 6, and the other end portion is opened to an upper end opening portion of the processing tank 1. . An air supply fan 5 and a heater 10 are internally provided in the air supply passage 9, and the air supply fan 5 and the heater 10 are controlled by a signal from the control unit 8.

An exhaust passage 11 is provided in the case 6,
The exhaust passage 11 has one end opening to the upper opening of the processing tank 1 and the other end opening to the outside of the case 6. Exhaust path 1
An exhaust fan 12 is installed inside the exhaust fan 1.
2 is controlled by a signal from the control unit 8. Although not shown in the drawing, the processing tank 1 contains a food waste processing material such as wood chips inhabited by microorganisms.
As the food waste treating material, conventionally known wood fine pieces (for example, Japanese Patent Publication No. 2-10398 and Japanese Patent Publication No. 30760).
No., Jikkou 3-22385, etc.) can be used.

Inside the treatment tank 1, a negative characteristic thermistor 3 for detecting the water content of the food waste treating material in the treatment tank 1 is provided. As shown in the graph of FIG. 5 showing the relationship between resistance and temperature, the negative characteristic thermistor 3 has a temperature of T
_The temperature is kept at ₁ (℃) and the negative characteristic thermistor 3 at that time
Has a resistance of R ₁ (Ω). Then, when the negative characteristic thermistor 3 comes into contact with the refrigerant, heat dissipation increases, and the temperature rises to T ₁
The temperature decreases from (° C) to T ₂ (° C), and the resistance increases from R ₁ (Ω) to R ₂ (Ω). Therefore, the negative characteristic thermistor 3
The voltage rises when the resistance between them rises from R ₁ (Ω) to R ₂ (Ω). This property is used to detect the water content of the food waste treatment material. That is, in the treatment tank 1, the food waste is decomposed by the microorganisms in the food waste treating material to generate water, and the food waste treating material absorbs the water and the water content becomes high. When it comes into contact with food waste containing water,
The heat dissipation of the negative characteristic thermistor 3 increases and the temperature decreases,
This raises the resistance and raises the voltage. FIG. 6 shows the relationship between the voltage of the negative characteristic thermistor 3 and the water content of the food waste treating material. The voltage value of the negative characteristic thermistor 3 is input to the control unit 8.

By the way, air exists between the food waste processing materials put in the processing tank 1. If this air is present,
The heat radiation from the negative characteristic thermistor 3 due to the moisture contained in the raw garbage treating material becomes indirect, and the water content of the raw garbage treating material cannot be detected sensitively by the negative characteristic thermistor 3. For this reason, the present invention is characterized in that the compression means 4 for compressing the food waste treatment material facing the negative characteristic thermistor 3 is provided. In the embodiment shown in FIG. 3, a movable plate 21 is rotatably supported by a lower opening of a cylindrical detection container 20, and a negative characteristic thermistor 3 and a pressure sensor 22 are provided on an upper surface of the movable plate 21. There is. An upward spring force is applied to the movable plate 21 by a spring 23, and a pressure above a certain level (for example, about 2 kg) is applied, and the lower opening of the detection container 20 is closed. Above the upper opening of the detection container 20, with the movable plate 21 closing the lower opening of the detection container 20, the cylinder device serving as the compression unit 4 is opposed to the negative characteristic thermistor 3 provided on the upper surface of the movable plate 21. 24 are arranged.

FIG. 4 shows a block circuit diagram of the present invention, in which A is a water content adjusting means, which is controlled by the controller 8. Therefore, the food waste disposal device having the above-described configuration is configured such that the lid 15 is opened and the food waste disposal material is filled.
Raw garbage is put into the inside, the stirring blade 2 is intermittently operated at regular intervals, and the air supply fan 5 and the exhaust fan 12 are intermittently operated at regular intervals to create a raw garbage treatment material in which microorganisms live and raw food. The garbage is mixed with stirring and brought into contact with the air, so that the garbage is decomposed by the microorganisms inhabiting the garbage processing material.

Then, in order to detect the water content of the food waste treatment material, the cylinder device 24 is operated to compress the food waste treatment material contained in the detection container 20 to expel the air, thereby making the food waste treatment material. The heat dissipation from the negative characteristic thermistor 3 due to the water content is made sensitive and the voltage of the negative characteristic thermistor 3 at this time is detected and input to the control unit 8.
After the detection, when the compression means 4 further compresses the food waste processing material in the detection container 20, the movable plate 21 falls down against the spring force of the spring 23, whereby the food waste processing material in the detection container 20 is detected. It is extruded downward from the lower opening. On the other hand, when the compression means 4 is raised and the pressure is released, the movable plate 21 returns by the spring force of the spring 23 which is the return means to close the lower opening of the detection container 20, and the compression means 4 rises. Then, another food waste treatment material in the processing tank 1 enters the detection container 20 through the upper opening of the detection container 20. Therefore, a new food waste treatment material can always be used as a test body for each detection. In FIG. 3, reference numeral 25 indicates a food waste processing material.

By the way, raw garbage is decomposed by microorganisms in the raw garbage treating material to generate water, and the raw garbage treating material absorbs the water to increase the water content, but the raw garbage treating material absorbs the water. Then, when the water content increases, the resistance of the negative characteristic thermistor 3 in contact with the food waste treatment material increases, the voltage increases, and the increased voltage value is input to the control unit 8. Then, when the voltage value exceeds a certain value, it is determined that the water content of the food waste processing material is too high, and the signal from the control unit 8 turns on the heater 10 which is the water content adjusting means A and sends it. The air fan 5 is turned on, and the water contained in the food waste treating material is evaporated by warm air until the desired water content is reached.
When the target water content is reached, the voltage of the negative characteristic thermistor 3 drops, and this is input to the control unit 8 and the heater 10 is turned off. In this way, the food waste treatment material is adjusted to the most effective water content for the treatment of food waste by microorganisms.
The most effective water content of the food waste treatment material for treating food waste by microorganisms is 40% to 70%. If the water content is too high, air cannot be taken in, aerobic treatment cannot be performed, and it will rot. Further, in normal use, since the garbage is discarded every day and used, there is no general tendency that the water content of the garbage processing material is too low. Therefore, as the water content adjusting means A, It is sufficient to provide the heater 10 for reducing the water content. If the water content is too low, the microorganisms are difficult to reproduce and the treatment efficiency is poor. Therefore, as another embodiment corresponding to this, the water content adjusting means A is used.
In addition to the heater 10, a water supply device (not shown) may be further provided. That is, when the resistance of the negative characteristic thermistor 3 becomes equal to or lower than the minimum value, the control unit 8 supplies water from the water supply device to the food waste treatment material in the treatment tank 1.

Here, in the above embodiment, the voltage of the negative characteristic thermistor 3 is input to the controller 8, and based on this, the water content adjusting means A is turned on by a signal from the controller 8.
Although the example in which the water content is automatically adjusted by performing the off control is shown, the voltage between the negative characteristic thermistors 3 is input to the control unit 8 and the water content is displayed by the display means (not shown). Or, when the water content is above a certain value or below the certain value, it is displayed by visual display means or audible display means, and based on this, the heater is turned on manually or water is sprinkled. It is also possible to do so.

7 to 9 show another embodiment of the present invention. That is, in the above embodiment, the cylinder device 24
The example in which the compression means 4 for compressing the food waste treating material facing the negative characteristic thermistor 3 is shown.
In the embodiment shown in, the negative characteristic thermistor 3 is arranged on the inner wall of the processing tank 1 facing the rotation locus of the tip of the stirring blade 2 of the processing tank 1, and the raw garbage processing material is rotated by the rotation of the stirring blade 2. Is to be compressed in the portion indicated by B in FIG. Therefore, in this embodiment, the stirring blade 2 also serves as the compression means 4 for compressing the food waste treatment material facing the negative characteristic thermistor 3, and it is not necessary to provide the compression means 4 as a separate member. It suffices that the negative characteristic thermistor 3 is arranged in the treatment tank 1 at a specific position "the inner wall of the treatment tank 1 which faces the rotation locus of the tip of the stirring blade 2 of the treatment tank 1". The number can be reduced and the configuration can be simplified.

[0022]

The invention according to claim 1 of the present invention is provided with a treatment tank containing a food waste treatment material for decomposing food waste, and a stirring blade arranged in the treatment tank. In the garbage treatment device, the negative characteristic thermistor is arranged in the treatment tank, and the compression means for compressing the garbage treating material facing the negative characteristic thermistor is provided. By contact, the heat dissipation of the negative characteristic thermistor increases, the temperature decreases, the resistance rises and the voltage rises.By detecting this voltage, the moisture content of the food waste treatment material can be detected. It is possible to adjust the water content of the food waste treatment material based on this, and when the negative characteristic thermistor detects it, the compression means compresses the food waste treatment material located in the portion facing the negative characteristic thermistor. With, it is possible to expel the air that exists between the food waste processing materials, and to allow the heat radiation from the negative characteristic thermistor due to the moisture contained in the food waste processing material to be performed sensitively. The water content can be detected.

According to the second aspect of the present invention, in addition to the effect of the first aspect, a negative characteristic thermistor is provided on the surface of the rotatable movable plate facing the compression means. Arranged, the movable plate is collapsed by a certain pressure or more applied from the compressing means, and when the pressure is released, there is provided returning means for returning so as to face the compressing means. After compressing the positioned food waste treatment material and detecting the water content, the movable plate is tilted down by pressing it by the compression means, and the food waste treatment material used for detection is moved from the front of the negative characteristic thermistor to another place. Move to
By returning the movable plate to the original position, another food waste treatment material can be positioned in front of the negative characteristic thermistor, and as a result, a new food waste treatment material can be detected as a test object each time the negative characteristic thermistor detects it. It is possible.

According to the invention of claim 3 of the present invention, in addition to the effect of the invention of claim 1, the inner wall of the processing tank facing the rotation locus of the tip of the stirring blade of the processing tank. Negative characteristic thermistor is installed in the, and the stirring blade is used as a compression means for compressing the raw garbage processing material facing the negative characteristic thermistor. Therefore, the stirring blade for stirring and mixing the raw garbage and the raw garbage processing material is used. Thus, the compression means can also be used, and the device can be simplified.

Further, in the invention of claim 4 of the present invention, in addition to the effect of the invention of any one of claims 1 to 3, in addition to the effects of the invention, the garbage processing material detected by the negative characteristic thermistor. Since the water content adjusting means is provided to adjust the water content of the food waste treatment material when the water content of the food waste is outside a certain range, based on the water content of the food waste treatment material detected by the negative characteristic thermistor. The water content can be easily adjusted to the optimum water content by the water content adjusting means.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of the present invention.

FIG. 2 is a front sectional view of the above.

FIG. 3 is a cross-sectional view showing an example in which the above compression means is constituted by a cylinder device.

FIG. 4 is a block circuit diagram of the above.

FIG. 5 is a graph showing a relationship between resistance and temperature of the negative characteristic thermistor.

FIG. 6 is a graph showing the relationship between the negative characteristic thermistor voltage and the water content in the above.

FIG. 7 is a partially cutaway perspective view of another embodiment of the present invention.

FIG. 8 is a front sectional view of the above.

FIG. 9 is a schematic explanatory diagram showing an operation of the above.

[Explanation of symbols]

 1 Processing Tank 2 Stirring Blade 3 Negative Characteristic Thermistor 4 Compressing Means A Water Content Adjusting Means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junichi Ikeuchi 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (4)

[Claims] 1. A food waste processing apparatus comprising a processing tank containing a food waste processing material for decomposing food waste, and a stirring blade arranged in the processing tank, wherein a negative characteristic thermistor is provided in the processing tank. And a compression means for compressing the food waste disposal material facing the negative characteristic thermistor, the food waste disposal device. 2. A negative characteristic thermistor is arranged on the surface of the rotatable movable plate facing the compression means, and the movable plate collapses due to a certain pressure or more applied from the compression means, and when the pressure is released, the compression means is provided. 2. The food waste processing device according to claim 1, further comprising a returning means for returning so as to face each other. 3. A negative characteristic thermistor is arranged on the inner wall of the processing tank facing the rotational trajectory of the tip of the stirring blade of the processing tank, and the stirring blade compresses the food waste processing material facing the negative characteristic thermistor. The food waste processing device according to claim 1, which is configured as a means. 4. A water content adjusting means for adjusting the water content of the food waste treatment material when the water content of the food waste treatment material detected by the negative characteristic thermistor is out of a certain range. The garbage processing device according to any one of claims 1 to 3.