JP2001232335A - Organic matter treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an organic matter treating device by which the water content is optimally controlled in the progress of the application period of an microorganism carrier even if a heat capacity-type water content sensor is used. SOLUTION: This device is provided with a treating tank containing the carrier of an microorganism to decompose organic matter and decomposing the introduced organic matter such as garbage, a heat capacity-type water content sensor for detecting the water content in the treating tank, a means for regulating the water content in the tank and a controlling means for judging the water content obtained by the sensor on the basis of the water content data predetermined according to the progress of the application period of the microorganism carrier and controlling the water content regulating means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic substance processing apparatus for decomposing organic substances such as garbage by a microbial decomposition processing method, and more particularly to detection and control of the water content.

[0002]

2. Description of the Related Art An organic matter processing apparatus of this type stores a carrier of microorganisms that decompose organic matter (such as wood chips such as sawdust) in a treatment tank, and removes organic matter such as food waste. Decomposition treatment is performed by microorganisms cultured on a carrier. In order to maintain the environment inside the treatment tank suitable for the activation of microorganisms that decompose organic substances, it is necessary to control the temperature, agitation, ventilation, etc. in the tank and adjust the water content of the microorganism carrier mixed with organic substances to an appropriate value. Need to be kept.

[0003] For that purpose, a water content detecting means for detecting the water content of the microorganism carrier mixed with the organic matter is required.
JP-A-8-132004 (B09B 3/00)
And the like, a moisture content sensor for detecting the moisture content in the treatment tank, based on the moisture content obtained using this moisture content sensor, the moisture content is adjusted by the moisture content adjusting means. Known to do so.

[0004] In the above-mentioned moisture content sensor, a heating resistor and a heating resistor are provided on the back side of a casing formed of a good heat conductive material (stainless steel, copper, aluminum, or the like) in which the front side contacts the storage tank. A temperature sensor for detecting a temperature rise at the time of the fixing is fixed, and these are molded by a molding material such as an epoxy resin.

The above moisture content sensor is of a heat capacity type, that is, the heat capacity of the contents stored in the processing tank changes according to the moisture content, and when the moisture content is low (the heat capacity is small), the temperature tends to rise.
When the water content is high (heat capacity is large), the property that the temperature does not rise easily is used. The garbage is mixed due to the difference in the temperature rise value obtained from the temperature sensor when the heating resistor is energized for a certain time. This is to detect the water content of the microorganism carrier.

[0006]

The microbial carrier used in this type of apparatus (such as wood chips such as sawdust).
With the introduction of garbage, undecomposed organic matter is accumulated between microbial carriers or in the carriers with the elapse of the period of use, voids in the storage tank are reduced, and the heat capacity is increased. That is, when the moisture content is detected by the heat capacity type moisture content sensor as described above, the temperature becomes difficult to rise with the elapse of the use period of the microorganism carrier, so that the detected moisture content is higher than the actual moisture content. Errors occur. Therefore, when the water content is adjusted by the water content adjusting means using the water content detected by the above-described water content sensor,
The water content becomes lower than an appropriate value, and is adjusted to a dry state.

[0007] Further, since the microorganism carrier into which the garbage to be mixed is moved by stirring, a gap is formed in the vicinity of the installation position of the moisture content sensor, and the state changes every time detection is performed. Accordingly, the operation mode is set to “strong”, “standard”, “weak” based on the moisture content obtained using the moisture content sensor.
In the case of changing the water content, the operation mode changes each time because the obtained water content has a large variation, and the process becomes unstable.

Therefore, the present invention has been made to solve such a problem, and even if a heat capacity type water content sensor is used, optimal control of the water content according to the elapse of the use period of the microorganism carrier. It is an object of the present invention to provide an organic material processing apparatus capable of performing the above.

It is another object of the present invention to provide an organic material processing apparatus which eliminates instability of processing due to variation in water content obtained using a water content sensor.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a treatment tank containing a carrier of microorganisms for decomposing organic substances and decomposing organic substances such as garbage to be introduced. And a heat capacity type moisture content sensor for detecting the moisture content in the treatment tank, moisture content adjustment means for adjusting the moisture content in the treatment tank, and the moisture content obtained using the moisture content sensor. And control means for controlling the moisture content adjusting means by determining the moisture content data determined in advance according to the use period of the microorganism carrier.

[0011] Further, a processing tank containing a carrier of microorganisms that decompose organic substances and decomposing organic substances such as garbage to be charged therein, and a heat capacity type water content for detecting the water content in the processing tank. A sensor, a moisture content adjusting means for adjusting the moisture content in the treatment tank, and a remaining upper portion and a lower predetermined number removed from a fixed number of moisture content data obtained using the moisture content sensor. Control means for obtaining an average value and controlling the water content adjusting means.

Further, when the next moisture content data is obtained after a certain number of moisture content data has been obtained, the control means removes the oldest moisture content data among them, and then executes the processing. Is performed.

[0013] Further, the water content sensor is disposed on the outer surface of the treatment tank, and a cover is provided to cover the water content sensor. A heat insulating material is disposed between the water content sensor and the cover. It is.

Furthermore, an air space chamber is formed on the outer peripheral side of the moisture content sensor.

Further, the heat insulating material is attached to the inside of a cover body.

Further, a member for reflecting heat generated from the moisture content sensor is disposed between the moisture content sensor and the cover body.

Further, the water content sensor mounting portion of the processing tank is formed thinner than the others.

Further, the water content sensor is mounted on an outer surface of a bottom portion of the processing tank.

[0019]

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

FIG. 1 to FIG. 10 are views showing the configuration of the apparatus according to the present embodiment. This organic matter processing apparatus stores a carrier of microorganisms (a woody piece such as sawdust and is called a hole chip) to produce raw material. A processing tank 1 having an upper surface opening into which organic substances such as refuse are charged is configured to be easily taken out and housed in an outer case 2.

The treatment tank 1 is an injection molded product made of resin.
As shown in FIG. 1, the front and rear walls of the processing tank 1 are formed to be narrower toward the lower part due to the necessity of a draft angle for molding, while as shown in FIG. The side is formed in a substantially U-shaped section in an arc shape corresponding to the rotation locus of the stirring blade 8 described later, and the upper end is folded outward.

The outer case 2 has the lower case 3 on which the processing tank 1 is placed and covers the opening near the upper surface thereof, and the lower edge on the inner surface side is closely mounted on the upper edge of the opening of the processing tank 1, and the outer surface side is lower. The upper case 4 is fitted to the upper edge of the case 3.

The upper surface of the upper case 4 is opened corresponding to the upper surface opening 5 of the processing tank 1, and an input port 6 for inputting microorganism carriers, garbage and the like is formed. A lid 7 configured to be freely opened and closed by a hinge or the like is provided.

In the processing tank 1, a stirring shaft 9 having a plurality of stirring blades 8 erected between front and rear walls is provided rotatably forward and backward. The stirring shaft 9 is supported at both ends by bearings 10 and 11 formed on the front and rear walls of the processing tank 1, and has a shaft end 12 on the rear wall side as shown in FIG.
a, medium gear 13b, small gear 13c and large pulley 13d,
The rotation of the agitating motor 14 is reduced and transmitted through the speed reducing drive mechanism 13 composed of the small pulley 13e, and the rotation of the agitating motor 14 is transmitted at a reduced speed, whereby the agitating motor 14 is driven forward and reverse.

The stirring motor 14 and the speed reduction drive mechanism 1
The middle gear 13b, the small gear 13c, the large pulley 13d, and the like constituting the third motor 3 are attached to a metal frame 15 fixed to the back side of the processing tank 1, and the stirring motor 14 is formed in an arc shape of the processing tank 1. It is attached so as to be arranged in one side gap (dead space) on the bottom surface. Also, the left and right sides of the lower end of the drive mechanism mounting frame 15 are extended downward and bent horizontally, and are grounded when the processing tank 1 is taken out of the outer case 2 and set up.
a and 15b are formed.

Above the deceleration drive mechanism 13, a control board 20 on which a control section composed of a microcomputer is mounted is mounted, and each section of the apparatus is controlled by the control section mounted on the control board 20. Is done. Above the control board 20, an operation display unit 21 for switching the operation mode of the apparatus, turning on / off deodorization, and displaying a state is provided.

A planar heater 30 is attached to the front surface and left and right side surfaces of the processing tank 1 except for the rear side, and a thermistor (not shown) provided in the planar heater 30 by the control unit is used. The inside of the processing tank 1 is controlled so as to be maintained within a temperature range (about 40 ° C. to 60 ° C.) suitable for activating microorganisms.

As shown in FIG. 1 and FIG.
On the bottom outer surface near the rear wall, almost directly below the stirring shaft 9;
That is, the heat capacity type moisture content sensor 40 is attached so as to be located at the lowermost portion of the arc shape.

As shown in FIGS. 3 to 6, the moisture content sensor 40 is provided at a central portion of a heating element 41 in which a plurality of chip resistors are arranged on an aluminum substrate, for example, at a distance of about 3 mm from the heating element 41. The thermistor 43 is provided with a sponge 42 made of foamed silicon or the like interposed therebetween to provide a gap of a certain degree. By interposing a sponge 42 such as foamed silicon between the heating element 41 and the thermistor 43, the heat of the heating element 41 is not directly transmitted to the thermistor 43, and the thermistor 43 is in close contact with the back side of the processing tank 1. It is configured to be.

As described above, since the water content sensor 40 is attached to the bottom outer surface of the processing tank 1, the water content sensor is not provided in the processing tank or exposed as in the above-mentioned conventional publication. It can detect the moisture content in the inside, preventing problems such as dropping due to load at the time of stirring, failure due to water leakage from the mounting part, deterioration of detection accuracy due to accumulation of carriers etc. by different materials, and damage due to damage. it can. Furthermore, since it is the bottom, it is not affected by loss of the carrier or deviation due to agitation, etc. In addition to the radiant heat, the heat of the heating element 41 rises upward and is uniformly conducted to the carrier in the processing tank 1. Therefore, the accuracy of moisture content detection is also improved. In addition, since the lowermost portion and the narrow rear wall are close to each other, the carrier tends to be in a dense state due to agitation and its own weight. In this respect, the accuracy of detecting the moisture content can be improved.

Further, the mounting surface 1a of the water content sensor 40 in the processing tank 1 is provided so that radiant heat from the heating element 41 can be easily transmitted to the processing tank 1 and the temperature in the processing tank 1 can be easily detected. It is formed thinner. In the present embodiment, as shown in FIG. 3, the mounting surface 1 a of the moisture content sensor 40 is formed in a flat shape with respect to the arc-shaped bottom surface of the processing tank 1. Is thinnest, and the temperature in the processing tank 1 can be more easily detected.

Around the mounting surface 1a of the water content sensor 40, there are formed ribs 1b and 1c projecting so as to double surround the water content sensor 40, and a resin sensor is provided up to the outer rib 1b. It is designed to be covered with a cover 44. On the inner surface side of the sensor cover 44, a rib 44a to be fitted on the inner peripheral side of the inner rib 1c of the mounting surface 1a is formed. Inside the rib 44a, a heat insulating material 45 such as foam resin or glass wool and aluminum A reflecting member 46 such as a foil is attached. When the sensor cover 44 is attached with the attachment screws 47, the heating elements 41 formed of an aluminum substrate or the like are provided with protrusions 1 formed at the four corners of the attachment surface 1a.
d and the projections 4 formed at the four inner corners of the sensor cover 44
4b, the lower surface side of the heating element 41 is covered with a heat insulating material 45, and the space between the double ribs 1b and 1c is sealed on the outer peripheral side of the heating element 41 with the sensor cover 44. A layer chamber 48 is formed.

With the above configuration, the lower surface side of the heating element 41 of the moisture content sensor 40 is covered with the heat insulating material 45, so that the heat of the heating element 41 escapes to the outside due to heat conduction, or the temperature of the outside air is reduced. Since it can be prevented from being affected, and is covered with the reflecting member 46, a heat insulating effect against radiant heat can be obtained. Since the heat of the heating element 41 can also be prevented from being transmitted to the sensor cover 44, the heat can be transmitted more efficiently in the processing tank 1, and the water content can be detected with high sensitivity. Also, the sensor cover 44
Since the air space chamber 48 is formed on the outer peripheral side of the moisture content sensor 40 in which a gap is inevitably formed due to the fitting portion, the heat insulating effect against the outside air temperature can be obtained.

Further, since the heat insulating material 45 and the reflecting member 46 are attached to the inner surface side of the sensor cover 44, it is only necessary to remove the sensor cover 44 during maintenance, so that the heat insulating material 45 and the reflecting member 46 are broken. The maintenance of the moisture content sensor 40 is also improved.

On the other hand, as shown in FIGS. 9 and 10, an exhaust hole 51 in which an exhaust filter 50 is mounted is formed in the inner rear wall of the upper case 4, and exhaust gas for exhaust is directly provided downstream thereof. A fan 52 is attached. Further, on the downstream side of the exhaust fan 52, a motor drive switching for switching between a first exhaust passage A to which a deodorizing device 60 described below is attached and a second exhaust passage B for directly discharging exhaust gas to the outside. A valve 53 is provided.

The deodorizing device 60 attached to the first exhaust passage A has a tubular heater which is wound and folded back in an oval shape via a wind direction plate 61 for directing the exhaust flow to the center and both sides on the upstream side. (Seeds heater) 62 is disposed, and an oxidation catalyst 63 formed of ceramic and formed in a honeycomb structure is disposed downstream thereof, and these are accommodated in a metal frame 64 such as stainless steel having heat resistance and corrosion resistance. 65. As a result, the inflowing exhaust gas is efficiently heated by being brought into contact with the heater surfaces of the central portion and both side portions of the elliptical tubular heater 62 by the wind direction plate 61, and the heated exhaust gas passes through the catalyst 63, whereby the catalyst 63
Is heated to accelerate the decomposition reaction of the malodorous components contained in the exhaust gas.

The outlet side of the deodorizing device 60 is connected to the lower case 3
Is connected to an exhaust port 66 which is opened at the lower part on the back side.
Further, a dilution fan 68 for sucking the exhaust gas from the processing tank 1 and diluting the high-temperature exhaust gas discharged from the deodorizing device 60 with the outside air flowing from the ventilation hole 67 is attached to the exhaust port 66 side. . A shielding plate 69 is mounted upstream of the dilution fan 68 to block high-temperature exhaust air discharged from the deodorizing device 60 from hitting the motor portion 68a at the center of the dilution fan 68. On the back side of the motor section 68a of the dilution fan 68, I
A substrate 68b on which C and a resistor are mounted is mounted. With this configuration, it is possible to suppress a rise in the temperature of the substrate 68b mounted on the back surface of the motor unit 68a of the dilution fan 68, thereby preventing deterioration of the substrate and extending the life of the dilution fan 68. Can be.

A thermistor 62c and a thermal fuse 62d are located above the tubular heater 62. The thermistor 62c detects the temperature above the tubular heater 62, and stops the energization of the tubular heater 62 by the control unit mounted on the control board 20 when the detected temperature becomes a predetermined value or more. It is provided. The temperature fuse 62d is connected in series to a power supply line to the tubular heater 62, and is blown when the temperature above the tubular heater 62 becomes a certain value higher than the set temperature of the thermistor 62c. The power supply to the heater 62 is interrupted.

The above-described thermistor 62c and the temperature fuse 62d are provided with the dilution fan 68 for deodorizing exhaust.
If the flow of the exhaust air in the deodorizing device 60 is stopped due to a failure of the device or the like, the surrounding resin parts may be thermally deformed due to a rise in the temperature of the tubular heater 62. This is to prevent this. For example, when the exhaust port 66 is closed by some obstacle and the air volume by the dilution fan 68 decreases, the exhaust air passing through the tubular heater 62 also decreases, so that the temperature rises above the design temperature. By stopping the energization of the tubular heater 62 by detecting the above, it is possible to prevent the surrounding resin parts from being thermally deformed. In this case, when the time has elapsed since the energization of the tubular heater 68 is stopped, or when the obstacle blocking the exhaust port 66 is removed and the air flow by the dilution fan 68 recovers, the temperature detected by the thermistor 62c also decreases. , Tubular heater 6
2 is restarted. On the other hand, when the dilution fan 68 does not rotate due to a failure or the like, the exhaust air to the tubular heater 62 also stops flowing.
When the temperature reaches a certain temperature exceeding the set temperature of 2c, the temperature fuse 62d is blown to cut off the power supply to the tubular heater 62. Thus, even in the event of a failure, the surrounding resin components can be reliably prevented from being thermally deformed.

The deodorizing device 60 and the dilution fan 68
The exhaust deodorizing mechanism is mounted on the back surface of the processing tank 1 on the opposite side to the side on which the stirring motor 14 is mounted, and a part of the dilution fan 68 is provided as shown in FIG. Of the bottom surface of the circular arc. Thereby, the weight balance as a whole is maintained.

The deodorizing device 60 is attached to the back of the processing tank 1 via a heat insulating material 65, and controls the heating temperature (250 ° C. or higher) of the tubular heater 62 to the planar heater 30.
The processing tank 1 is configured to be insulated to a temperature close to the control temperature (80 ° C. to 90 ° C.).

On the other hand, the second exhaust passage B is provided with a switching valve 53 at an exhaust port 70 which opens downward on the back side of the exhaust fan 52 for direct exhaustion, that is, on the back side of the outer case 2.
Are configured to communicate with each other.

An intake port 71 for taking in outside air is formed on the bottom surface side of the lower case 3.
And the outside air taken in from the gap between the lower case 3 and the upper case 4 passes through the gap between the outer case 2 and the processing tank 1, and passes through the air inlet 72 formed in the upper part of the processing tank 1. It is taken into the tank 1.

Further, from the bottom to the lower front of the processing tank 1, a discharge port 80 for the processed material (compost) stored therein is formed to be openable and closable by a drawer-type shutter 81. A take-out guide 82 that is inclined forward is attached to the lower side of the discharge port 80. By pulling out the shutter 81, it is possible to take out the composted material to the front side of the lower case 3 through the guide 82. I can do it.

The take-out guide 82 is attached to the outer edge of the discharge port 80 of the processing tank 1, forms a take-out port 83 at the lower front side of the lower case 3, and the lower end of the take-out port 83 connects the process tank 1. When it is taken out of the outer case 2 and set up, it becomes a grounding portion 84 that is grounded, and the upper side is a reinforcing frame 85 that reinforces the front edge of the outlet 80 of the processing tank 1.
The take-out port 83 is normally closed by a take-out palate 86 so as not to be seen.

FIG. 11 shows the relationship between the initial temperature (thermistor temperature before energizing the heating element 41) and the temperature 20 minutes after the start of energization, using a new chip (using a case of 50% moisture content) as an example. First microbial carrier), 1.5 months use, 3
It is the figure which showed in a graph about each use for more than a month. As can be seen from the figure, even with the same moisture content (50%), the longer the use period, the lower the temperature rise,
This means that an error occurs such that the detected moisture content becomes higher than the actual moisture content (50%), as described above.

FIG. 12 is a diagram showing that in consideration of the above, in the present embodiment, the threshold value of the water content at the time of switching the operation mode is changed with the elapse of the use period of the microorganism carrier. is there. That is, when the microorganism carrier is new, the threshold value for switching the operation mode between "weak" and "standard" is 30%, and the threshold value for switching between "standard" and "strong" is 50%. This indicates that after 1.5 months, the thresholds are respectively increased by predetermined values, and after 3 months, the predetermined values are further increased. The moisture content data indicating the threshold values corresponding to these three use periods are stored in the nonvolatile memory of the microcomputer mounted on the control board 20, and will be described later with reference to the moisture content data. The processing shown in the flowchart of FIG. 13 is performed.

First, the basic operation will be described.
When using the present apparatus, a certain amount of the microorganism carrier is charged into the treatment tank 1 in advance. Then, when processing organic matter such as garbage, the lid 7 is opened, and organic matter such as garbage is thrown into the treatment tank 1 through the input port 6 and the lid 7 is closed. When the lid 7 is closed, a detection unit (not shown) detects this, and the control unit mounted on the control board 20 supplies power to the sheet heater 30, the stirring motor 14, the exhaust fan 52, and the like based on the output. Start control.

By controlling the power supply to the stirring motor 14, the stirring shaft 9 on which the stirring blades 8 are erected intermittently (for example, every 30 minutes for 1 minute) to rotate forward and backward to stir and mix the carrier and the organic matter. At the same time, the temperature in the processing tank 1 is maintained in an optimum range for activating the microorganisms by controlling the energization of the planar heater 30, and the organic matter is decomposed into carbon dioxide and water by the microorganisms cultivated on the carrier to compost. Become

Further, by controlling the power supply to the exhaust fan 52, as shown in FIG. 9, the humid air in the processing tank 1 is directly discharged to the outside through the exhaust port 70 through the second exhaust passage B for exhaust. While preventing the inside of the tank 1 from being in a high humidity state, and with the air in the processing tank 1 being discharged to the outside,
Fresh outside air is taken into the exterior case 2 from an intake port 71 formed at the bottom of the lower case 3 and oxygen necessary for activating microorganisms is introduced into the treatment tank 1 from an intake hole 72 formed at the top of the treatment tank 1. Supply.

On the other hand, when the odor of the exhaust gas discharged by the direct exhaust from the processing tank 1 is worrisome, the operation display unit 21
Turn on the deodorization button provided in When the deodorizing button is turned on, the control unit stops energization of the exhaust fan 52, and the switching valve 53 directly closes the second exhaust passage B for exhaust, as shown in FIG. The first exhaust passage A is switched to open, and the heater 62 of the deodorizing device 60 is energized and the dilution fan 68 is energized, so that the exhaust gas from the processing tank 1 flows to the first exhaust passage A where the deodorizing device 60 is located. Become like This can prevent the odor from being discharged to the outside.

Next, the detection and control of the water content in this embodiment will be specifically described with reference to the flowchart shown in FIG.

When the process shown in the above-mentioned flowchart is started by turning on the power, the process is first set to "standard operation" (process 101), and the accumulation of the operation time T is started (process 10).
2). Then, stirring is performed four times at regular intervals of 30 minutes (process 103), and after 10 minutes have passed from the end of the fourth time (process 104), the moisture content is sensed (process 10).
5). This is to measure the initial temperature by the thermistor 43 of the moisture content sensor 40 and then start energization of the heating element 41, and detect a temperature rise value from the temperature measured by the thermistor 43 after energization for 20 minutes. The water content is determined from the temperature rise value (process 106).

When the water content is determined, the integrated time T (the elapsed use period of the microorganism carrier) started in the above process 102 is 1.
It is checked whether it is less than 5 months (judgment 107). 1.
If it is less than 5 months, the moisture content data of the new chip is used as the threshold value (Yes in decision 107 → Process 10)
8). If it is 1.5 months or more, it is further checked whether it is less than 3 months (judgment 109). If it is less than 3 months, the moisture content data after 1.5 months is used as the threshold (judgment 109). If Yes, step 109 in step 109), if it is three months or more, the moisture content data after three months is used as the threshold value (No in decision 109, step 111).

Then, by comparing the moisture content determined in the process 106 with the moisture content data (threshold value) set above, it is determined whether the moisture content is low, optimized or high. (Decisions 112, 114).

If the water content is low, the operation mode is set to "weak operation" (Yes in decision 112 → process 113).
Specifically, in order to increase the water content, the heating temperature of the planar heater 30, which also functions as the water content adjusting means, and the air volume of the exhaust fan 52 and the like are reduced, and the stirring time of the stirring blade 8 is shortened. By controlling in this manner, the moisture supplied together with the garbage and the moisture generated by the decomposition treatment of the garbage are less likely to evaporate, so that the water content is increased.

When the water content is optimal, the operation mode is set to "standard operation" (No in decision 112 → decision 1).
14 Yes → Process 115). Specifically, in order to maintain the water content, the heating temperature of the planar heater 30, the air volume of the exhaust fan 52 and the like, and the stirring time of the stirring blade 8 are each operated at "standard". As a result, the water supplied together with the garbage, the water generated by the decomposition of the garbage, and the like evaporate appropriately, so that the water content is maintained at an appropriate value.

If the water content is high, the operation mode is set to "strong operation" (No in decision 114-> process 11).
6). Specifically, in order to reduce the water content, the heating temperature of the planar heater 30 and the air volume of the exhaust fan 52 are increased, and the stirring time of the stirring blade 8 is increased. This makes it easy to evaporate the water supplied together with the garbage and the water generated by the decomposition of the garbage, so that the water content is reduced.

By controlling as described above, it is possible to control the water content in the treatment tank 1 to an appropriate value according to the usage period of the microorganism carrier.

In the above embodiment, the elapsed period of use of the microorganism carrier is divided into three stages of less than 1.5 months, less than 3 months, and 3 months or more.
The accuracy can be further improved.

Further, in the above embodiment, the threshold value for determining the operation mode is changed according to the elapsed time of use of the microorganism carrier. For example, each water content detected using the water content sensor 40 may be changed. Correspondingly, the moisture content correction data for each use elapsed period may be prepared and corrected.

In the above embodiment, the operation time T is integrated in order to obtain the period of use of the microorganism carrier. However, since the stirring period is determined, the period of use of the microorganism carrier is obtained from the stirring period and the number of times. You may do it.

FIGS. 14 to 16 are diagrams for explaining another embodiment of the detection and control of the water content according to the present invention.

As described above, since the microorganism carrier mixed with the garbage to be input moves by stirring, a gap may be formed near the installation location of the moisture content sensor 40, and the state may change every time the detection is performed. Change. Therefore, as shown in FIG. 14, the variation of the detection value b of the moisture content sensor 40 shown by the solid line becomes larger than the actually measured value a of the moisture content shown by the broken line.

The detection and control of the water content in the present embodiment in which the above measures are taken will be specifically described with reference to the flowchart shown in FIG.

When the process shown in the above-mentioned flowchart is started by turning on the power, the process is first set to "standard operation" (process 201), and the number N of moisture content data is initialized to 0 (process 2).
02). Then, stirring is performed four times at regular intervals of 30 minutes (process 203), and after 10 minutes have passed from the end of the fourth time (process 204), the moisture content is sensed (process 20).
5). In the same manner as described above, after the initial temperature is measured by the thermistor 43 of the moisture content sensor 40, energization to the heating element 41 is started, and after 20 minutes of energization, the temperature rise value is detected from the temperature measured by the thermistor 43. In this embodiment, this temperature rise value is used as moisture content data.

When the moisture content data is obtained, one is added to the moisture content data number N (processing 206), and the moisture content data number N
It is checked whether or not the number has become 12 (decision 20)
7) The above processing 203 to judgment 20 until N = 12
Repeat step 7.

When the number of moisture content data N = 12, that is, when 12 moisture content data are obtained, the process proceeds to the next moisture content determination process (Yes in decision 207 → process 208). here,
The average value is calculated from the remaining four data excluding the upper six and the lower two data among the twelve moisture content data, and the moisture content is determined from the average value. The reason why the number removed was higher in the upper 6 and higher in the lower 2 is that the variation in the detection value by the water content sensor 40 is mainly due to the gap generated near the installation location of the water content sensor 40. Water content is low,
That is, the frequency of erroneous detection that the temperature rise value (moisture content data) becomes high increases.

When the water content is determined as described above, it is determined whether the water content is low, optimized or high (decisions 209 and 211).

As in the above embodiment, when the water content is low,
The operation mode is set to “weak operation” (Ye of judgment 209)
s → process 210). Specifically, in order to increase the water content, the heating temperature of the planar heater 30, which also functions as the water content adjusting means, and the air volume of the exhaust fan 52 and the like are reduced, and the stirring time of the stirring blade 8 is shortened. By controlling in this manner, the moisture supplied together with the garbage and the moisture generated by the decomposition treatment of the garbage are less likely to evaporate, so that the water content is increased.

If the water content is optimal, the operation mode is set to “standard operation” (No in decision 209 → decision 2).
11 Yes → process 212). Specifically, in order to maintain the water content, the heating temperature of the planar heater 30, the air volume of the exhaust fan 52 and the like, and the stirring time of the stirring blade 8 are each operated at "standard". As a result, the water supplied together with the garbage, the water generated by the decomposition of the garbage, and the like evaporate appropriately, so that the water content is maintained at an appropriate value.

If the water content is high, the operation mode is set to "strong operation" (No in decision 211 → processing 21).
3). Specifically, in order to reduce the water content, the heating temperature of the planar heater 30 and the air volume of the exhaust fan 52 are increased, and the stirring time of the stirring blade 8 is increased. This makes it easy to evaporate the water supplied together with the garbage and the water generated by the decomposition of the garbage, so that the water content is reduced.

After the operation mode is set to any one of the above-mentioned "weak operation", "standard operation", and "strong operation", as in the above-mentioned process 203 and subsequent steps, stirring at a constant period of 30 minutes is performed for 4 minutes.
(Process 214), 10 minutes after the end of the fourth time (process 215), sensing of the water content is performed (process 216), and one is added to the water content data number N (process 2).
17), since the water content data becomes thirteen, the oldest data is deleted and the number N of the water content data is decremented by one (process 218). Thereafter, the process proceeds from the determination 207 to the process 208, and the above-described process is repeated.

As described above, stirring at regular intervals of 30 minutes 4
Times, that is, the moisture content data measured every two hours
(One day's worth).
By taking the average of the remaining four
A smoothed moisture content c as shown by the solid line in FIG. 16 is obtained, and can be made closer to the actually measured value a shown by the broken line.
The instability of the process due to the variation in the water content obtained by using the water content sensor 40 can be eliminated.

In the present embodiment, the water content data is 1
If the number exceeds two, the oldest data is discarded and smoothed, and the operation mode is changed based on the obtained data. Therefore, the operation mode does not change suddenly but follows the change in water content gently. A stable processing can be realized.

In each of the above embodiments, the detection and control of the water content according to the present invention are described as being independent from each other. However, if they are combined, it is more effective.

[0077]

As described above, according to the present invention, a treatment tank containing a microorganism carrier capable of decomposing organic substances and decomposing organic substances such as garbage to be introduced is treated, and the water content in the treatment tank is reduced. A heat capacity type moisture content sensor for detection, a moisture content adjustment means for adjusting the moisture content in the treatment tank, and a moisture content obtained by using the moisture content sensor according to a usage period of the microorganism carrier. Determined based on predetermined moisture content data, and by providing a control means for controlling the moisture content adjustment means, even with a heat capacity type moisture content sensor, according to the elapse of the use period of the microorganism carrier Optimal control can be performed.

Further, a processing tank for storing a carrier of microorganisms that decompose organic substances and for decomposing organic substances such as garbage to be charged, and a heat capacity type water content sensor for detecting the water content in the processing tank. And a moisture content adjusting means for adjusting the moisture content in the treatment tank, and an average value obtained by removing an upper predetermined number and a lower predetermined number from a predetermined number of moisture content data obtained using the moisture content sensor. , And control means for controlling the water content adjusting means, whereby the instability of the process due to the variation in the water content obtained using the water content sensor can be eliminated.

Further, when the next moisture content data is obtained after a certain number of moisture content data have been obtained, the control means removes the oldest moisture content data among them, and then executes the processing. By performing the above, a stable process that does not cause a sudden change in the operation mode but gently follows the change in the water content can be realized.

Further, the water content sensor is disposed on the outer surface of the treatment tank and provided with a cover for covering the water content sensor, and a heat insulating material is provided between the water content sensor and the cover, so that the water content sensor can be used. The water content in the processing tank can be detected without being installed or exposed in the processing tank. Problems such as deterioration of detection accuracy and damage due to scratches can be prevented. Further, it is possible to prevent the heat generated by the moisture content sensor from escaping to the outside due to heat conduction or being affected by the outside air temperature, and further prevent the heat from being transmitted to the cover body. The moisture content can be detected with high sensitivity.

Further, since an air space chamber is formed on the outer peripheral side of the moisture content sensor, a heat insulating effect against the outside air temperature can be obtained.

Further, since the heat insulating material is attached to the inside of the cover body, it is only necessary to remove the cover body at the time of maintenance, so that the heat insulating material is not broken and the maintainability of the moisture content sensor is improved. I do.

Further, by disposing a member for reflecting heat generated from the moisture content sensor between the moisture content sensor and the cover body, a heat insulating effect against radiant heat can be obtained.

Further, since the water content sensor mounting portion of the processing tank is formed thinner than the others, heat generated from the water content sensor can be easily transmitted to the processing tank and the temperature in the processing tank can be easily detected. The moisture content detection accuracy is further improved.

Further, by mounting the moisture content sensor on the outer surface of the bottom of the treatment tank, the carrier is not affected by loss or deviation of the carrier, and the carrier is liable to become dense due to agitation or own weight. The generated heat rises upward and is uniformly transmitted to the carrier in the processing tank, so that the accuracy of detecting the moisture content can be further improved.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view of a central portion of an organic material processing apparatus according to an embodiment of the present invention, as viewed from a right side.

FIG. 2 is a bottom view of the processing tank of the embodiment.

FIG. 3 is an enlarged sectional view showing a mounting structure of the moisture content sensor in the embodiment.

FIG. 4 is an enlarged view of a main part showing a moisture content sensor part of FIG. 2;

FIG. 5 is an enlarged sectional view of a main part of the water content sensor of FIG. 2;

FIG. 6 is a perspective view of a sensor cover of the moisture content sensor.

FIG. 7 is a vertical cross-sectional view showing the configuration of a processing tank rear side of the organic substance processing apparatus.

FIG. 8 is a front view of the processing tank.

FIG. 9 is a vertical cross-sectional view showing the exhaust mechanism of the embodiment, showing a state where deodorization is off.

FIG. 10 is a vertical cross-sectional view showing the exhaust mechanism when deodorization is on.

FIG. 11 is a graph showing the relationship between the initial temperature when the water content is 50% and the temperature 20 minutes after the start of energization for a new chip, 1.5 months use, and 3 months or more use. .

FIG. 12 is a diagram showing that the threshold value of the water content at the time of switching the operation mode is changed with the elapse of the use period of the microorganism carrier.

FIG. 13 is a flowchart showing an embodiment of detection and control of moisture content according to the present invention.

FIG. 14 is a graph showing a change in a measured value of a water content and a change in a value detected by a water content sensor.

FIG. 15 is a flowchart showing another embodiment of the detection and control of the moisture content according to the present invention.

FIG. 16 is a graph showing changes in the water content obtained by smoothing the actually measured value of the water content and the detection value by the processing shown in the flowchart of FIG. 15;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing tank 1a Moisture content sensor mounting surface 1b, 1c Rib 1d protrusion 2 Outer case 3 Lower case 4 Upper case 6 Input port 7 Lid 8 Stirring blade 9 Stirring shaft 10, 11 Bearing unit 13 Reduction drive mechanism 14 Stirring motor Reference Signs List 15 drive mechanism mounting frame 20 control board 21 operation display unit 30 planar heater 40 moisture content sensor 41 heating element 42 sponge 43 thermistor 44 sensor cover 44a rib 44b protrusion 45 heat insulating material 46 reflecting member 47 mounting screw 48 air layer chamber 50 exhaust Filter 51 Exhaust hole 52 Exhaust fan 53 Switching valve 60 Deodorizing device 61 Wind direction plate 62 Tubular heater 62c Thermistor 62d Temperature fuse 63 Oxidation catalyst 64 Metal frame 65 Insulation material 66 Exhaust port 68 Dilution fan 69 Shield plate 70 Exhaust port 71 Inlet port 72 Inlet 80 Outlet 81 Utter 82 removal guide 83 removal port 85 reinforcing frame 86 removal lid

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideki Yukiyama 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Shin-ichi Tamaogi 2 Keihanhondori, Moriguchi-shi, Osaka 5-5-5 Sanyo Electric Co., Ltd. (72) Inventor Masahiko Asada 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. 4D004 AA01 AA03 BA04 CA18 CA48 CB04 CB28 CB32 CB50 CC08 CC09 DA01 DA02 DA06 DA09 DA13 DA16

Claims (9)

[Claims] 1. A treatment tank containing a carrier of microorganisms that decompose organic matter and decomposing organic substances such as garbage to be charged therein, and a heat capacity water content for detecting the water content in the treatment tank. A sensor, a moisture content adjusting means for adjusting the moisture content in the treatment tank, and a moisture content obtained using the moisture content sensor into moisture content data predetermined according to a use elapsed period of the microorganism carrier. And a control means for controlling the moisture content adjusting means based on the determination based on the determination. 2. A treatment tank containing a carrier of microorganisms that decompose organic matter and decomposing organic substances such as garbage to be charged therein, and a heat capacity water content for detecting the water content in the treatment tank. A sensor, a moisture content adjusting means for adjusting the moisture content in the treatment tank, and a remaining upper portion and a lower predetermined number removed from a fixed number of moisture content data obtained using the moisture content sensor. An organic matter processing apparatus, comprising: a control unit that obtains an average value and controls the water content adjustment unit. 3. When the next moisture content data is obtained after a certain number of moisture content data has been obtained, the control means removes the oldest moisture content data among them, and then executes the processing. 3. The organic matter treating apparatus according to claim 2, wherein: 4. The method according to claim 1, further comprising: disposing the moisture content sensor on an outer surface of the treatment tank and providing a cover body for covering the moisture content sensor, wherein a heat insulating material is arranged between the moisture content sensor and the cover body. An organic matter treating apparatus according to any one of claims 1 to 3. 5. The organic matter processing apparatus according to claim 4, wherein an air space chamber is formed on an outer peripheral side of the moisture content sensor. 6. The organic matter processing apparatus according to claim 4, wherein the heat insulating material is attached to the inside of the cover body. 7. The organic matter treating apparatus according to claim 4, wherein a member that reflects heat generated from the moisture content sensor is disposed between the moisture content sensor and the cover body. . 8. The organic substance processing apparatus according to claim 4, wherein a portion where the moisture content sensor is attached to the processing tank is formed thinner than other portions. 9. The organic matter treating apparatus according to claim 4, wherein the moisture content sensor is attached to an outer surface of a bottom portion of the treatment tank.