JP2010253368A - Organic waste treatment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an organic waste treatment apparatus of a simple structure capable of detecting the drying state of the inside of a treatment vessel during fermentation degradation of organic waste. <P>SOLUTION: The organic waste treatment apparatus includes the treatment vessel containing organic waste, a stirring means for stirring together the organic waste and a treating substance decomposing the organic waste, water supply means for supplying water to the treatment vessel and a control means for controlling the water supply means. It is also equipped with a dust amount detection means of detecting dust scattered by the stirring means, and the amount of water supplied is controlled according to the amount of dust determined by the detection means. The dust amount detection means is arranged in the treatment vessel or an exhaust duct or a circulation duct communicating with the treatment vessel. A discrimination means of discriminating whether water is to be supplied to the vessel and/or a discrimination means of increasing or decreasing the amount of water to be supplied to the vessel is arranged in the control means for the water supply means. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an organic waste treatment apparatus that decomposes organic waste such as raw garbage, and relates to an improvement in a water supply mechanism that detects the dry state of a flowing organic waste and its treatment substance and supplies moisture.

  In general, this type of processing apparatus is widely known as a garbage processing apparatus for facilities such as household garbage processing and restaurants. And the processing method employ | adopts the method of grind | pulverizing and drying the waste accommodated in the processing tank, and the method of fermenting and decomposing waste with a microorganism.

Among such treatment methods, the method of fermenting and decomposing organic waste with microorganisms and decomposing it into carbon dioxide (CO ₂ ) and water (H ₂ O) does not require treatment of the residue and may cause odors. Since it is not, it has been widely used.

  For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2001-170605) includes a processing tank for storing organic waste and a stirring blade provided in the processing tank, and the organic waste and aerobic in the processing tank. An apparatus is disclosed in which microorganisms are mixed and decomposed while stirring. An air supply mechanism is disclosed in which a small gap is formed at the bottom of the treatment tank and a small number of air holes are formed in the opposing bottom wall surface, and compressed air is supplied from the air holes. This publication describes that air can be supplied even if the volume of the processed material decreases because air is supplied from the bottom wall surface of the processing tank.

  Patent Document 2 (Japanese Patent Application Laid-Open No. 2001-113254) includes a treatment tank that contains organic waste, a stirring blade that stirs the waste in the treatment tank, and a shower that supplies water to the treatment. A processing device is disclosed. And the apparatus which mixes aerobic microorganisms in the organic waste accommodated in the processing tank, supplies air, stirring, and sprinkles water on a processed material simultaneously is disclosed. In addition, in the same document, neither water spraying is continuously performed during the decomposition of the processed material, nor is it explained whether watering is performed when overdried according to the water content of the processed material.

  However, when organic waste is decomposed with aerobic microorganisms, the aerobic microorganisms and their culture materials (wood chips, etc.) must be agitated to supply appropriate air and be maintained in an appropriate moisture state. It can be easily understood that moisture is supplied during overdrying.

JP 2001-170605 A (FIG. 1) JP 2001-113254 A (FIG. 1)

  As described above, in an apparatus for decomposing organic waste with aerobic microorganisms, it is necessary to supply air and moisture to the microorganisms. The required amount of air and moisture varies depending on the input amount of organic waste, its components, and the state of decomposition treatment. Therefore, the treatment tank is provided with an air supply device and a water supply device for supplying the required air each time, a temperature sensor for detecting the temperature in the tank, and a moisture sensor for detecting the moisture content of the fungus bed, and detection of these sensors. It has already been known to adjust the amount of air flow and adjust the amount of water absorption based on the results.

  However, the temperature and humidity in the tank (moisture bed moisture content) differ each time depending on the properties of the input organic waste, the input amount, and the environmental temperature and humidity of the treatment apparatus. Further, for example, when organic waste or the like being processed on the temperature sensor or the moisture sensor adheres to the detection portion of the sensor, the temperature or moisture of the adhered mass is detected. If the inside of the treatment tank is overdried, the microorganisms in the fungus bed become dormant, and the organic waste in the treatment tank cannot be decomposed.

  Then, this inventor discovered that the dust was scattered in the tank in the place which observed the inside of the tank of an overdry state. This is because the waste, aerobic microorganisms, and their culture materials that are being decomposed become high temperature and low humidity, and the fines in them disperse in the tank, and if this state continues, the decomposition of the processed material by the microorganisms will not be promoted at the same time. Dust is discharged out of the tank, causing problems such as clogging of the exhaust duct.

The main object of the present invention is to provide an organic waste treatment apparatus capable of detecting a dry state in a treatment tank with a simple structure in a process of fermenting and decomposing organic waste.
Furthermore, an object of the present invention is to provide an organic waste treatment apparatus that can accurately detect the overdried state in the treatment tank during the decomposition process of the organic waste and eliminate the overdried state of the bacterial bed.

  In order to achieve the above object, the present invention provides a treatment tank containing organic waste, a stirring means for stirring a treatment substance for decomposing the organic waste, a water supply means for supplying moisture into the treatment tank, and Control means for controlling. And the dust amount detection means which detects the dust scattered by a stirring means is provided, and the amount of water supply is controlled according to the dust amount from this detection means. Therefore, the dust amount detection means is installed in the processing tank or in an exhaust duct or a circulation duct communicating with the processing tank. The control means of the water supply means is provided with a determination means for determining whether or not to supply moisture into the tank and / or a determination means for adjusting the amount of moisture supplied into the tank.

  The specific configuration will be described in detail. A treatment tank containing organic waste, an agitation means for agitating the organic waste disposed in the treatment tank and a treatment substance for decomposing the organic waste, and the inside of the treatment tank A water supply means for supplying moisture to the water supply, and a control means for controlling the water supply means. The control means is provided with dust amount detection means for detecting dust scattered by the stirring means. Therefore, this control means is configured to control the water supply amount of the water supply means based on the detection result of the dust amount detection means.

  In the present invention, the amount of dust scattered by the stirring means for stirring the organic waste housed in the treatment tank and the treatment substance for decomposing the organic waste is detected, and the water supply means for supplying moisture to the tank is controlled. Since it is a thing, it has the following effects.

  When the organic waste agitated in the treatment tank and the treatment substances that decompose it (for example, aerobic microorganisms and their culture substances) are scattered in an overdried state, the amount of scattered dust is reduced in the treatment tank or Detect in the communicating duct. Then, the optimum condition for the decomposition action of microorganisms can be maintained by supplying water from the water supply means according to the amount of dust or adjusting the amount of water supply.

  The dust detection detection means has a simple structure by detecting light attenuation by irradiating light (visible light, ultraviolet light, infrared light, laser light) in the processing tank or a duct communicating with the processing tank. Can be provided at low cost.

  Further, according to the present invention, a moisture sensor or a temperature sensor is provided in the treatment tank, and the control means of the water supply means further determines whether or not the water supply is necessary and adjusts the water supply amount by detecting information from the dust detection amount detection means, the moisture sensor and the temperature sensor. Accurate and suitable bacteria bed conditions can be maintained.

Explanatory drawing which shows the whole structure of the organic waste processing apparatus concerning this invention. (A) is explanatory drawing of the side state of the apparatus of FIG. 1, (b) shows the side view of an apparatus different from (a). It is explanatory drawing of the mechanism which adjusts the environment in a tank, such as the air content of the processed material in the apparatus of FIG. 1, water content, and temperature, and the inside of a tank provided with the watering mechanism, the air supply mechanism, and the circulation mechanism of the air in a tank Overall explanatory diagram showing an environmental system. It is explanatory drawing which shows the exhaust mechanism in a processing tank, (a) shows the case where a dust amount detection sensor is provided in a processing tank, (b) shows the case where it provides in an exhaust duct. It is explanatory drawing which shows the structure of the stirring blade which comprises a stirring means, (a) shows explanatory drawing of stirring operation, (b) is sectional drawing of xx direction. FIG. 2 is a conceptual explanatory diagram showing a controller of the apparatus of FIG. 1.

  An organic waste treatment apparatus A shown in FIG. 1 includes a treatment tank 10 containing organic waste (hereinafter referred to as “processed material”), an agitation means 20, an in-bath environment control mechanism 60, a controller 65, It is composed of Hereinafter, “processing tank”, “stirring means”, “in-tank environment control mechanism”, and “control controller” will be described in this order.

[Configuration of treatment tank]
The processing tank 10 is covered with an apparatus outer housing (housing) 11 and is formed in a shape that accommodates the processed material M therein. The processing tank 10 is configured to be robust with a volume corresponding to the application. The housing 11 covers the treatment tank 10 with an appropriate metal material, synthetic resin, or the like, and has confidentiality, water resistance, and heat resistance. The housing 11 shown in the figure has a moderate confidentiality by welding a metal plate to a frame frame to form an outer wall. This confidentiality is configured such that the processed material M stored in the internal processing tank 10 does not scatter to the outside, and a strange odor does not reach the outside. Further, the water resistance is configured such that moisture contained in the processed product M does not leak to the outside. Further, the outer wall of the housing 11 is formed of a heat insulating wall so as to keep the processing tank 10 at an appropriate temperature (decomposition temperature of the processed material to be described later) to prevent condensation on the inner wall of the processing tank.

  As shown in FIG. 2, the treatment tank 10 formed in this way is provided with a loading door 12 for loading the processed material M and a drain door 13 for discharging the residue. Accordingly, in the processing tank 10, a residue (for example, a metal piece or the like) that cannot be decomposed after the processed material M is input from the input door 12 or is loaded by a conveyor (not shown) connected to the door and decomposed inside. Is taken out from the drain door 13. In addition, a drain pipe (not shown) is provided so that moisture remaining in the treatment tank is drained to the outside. In addition, 12a in the figure is a handle provided on the closing door 12.

  The control controller 65 includes a control box 62 and an electric circuit built in the control box 62. The electric circuit includes a driver circuit for a drive motor, which will be described later, a sensor detection circuit, which will be described later. Although the configuration of the electric circuit will be described later, the illustrated control box 62 has an outer wall made of a heat insulating material to prevent condensation on the inner wall of the box.

[Configuration of stirring means]
In the processing tank 10, stirring means 20 for stirring the processed material M is provided. This agitation means 20 has (1) the purpose of mixing the processed product M, microorganisms and their culture (pulp chips, etc.) accommodated in the treatment tank 10, and (2) air to the microorganisms (eg aerobic microorganisms) It is configured to achieve the purpose of supplying and (3) the purpose of evaporating the water contained in the processed product M.

  For this reason, the stirring means 20 is equipped with one or a plurality of stirring blades 22 in the treatment tank 10. As shown in FIG. 2A, the stirring blade 22 may be composed of two parallel rotating shafts 21a and 21b and stirring blades 22a and 22b attached around the rotating shaft, or as shown in FIG. As shown, any configuration is possible even if a stirring blade 22c is arranged around one rotating shaft 21c. Although the shape of the stirring blade 22 (22a to 22c; the same applies hereinafter) is not shown, the stirring blade 22 is formed in a spiral shape around the rotation shaft 21, or several blades are arranged around the rotation shaft 21. Or a ring shape as shown in FIGS.

  In the illustrated example, a rotating shaft 21 is supported by a housing 11 at a substantially central portion in the treatment tank 10, and a plurality of (two in FIG. 1) ring shapes are formed on the rotating shaft 21 (see FIG. 5B). ) Are integrally attached to the support stem 22x. The stirring blades 22A and 22B are inclined at a predetermined angle θ (for example, 45 degrees) other than 90 degrees (orthogonal) in the axial direction with respect to the rotating shaft 21. As a result, the stirring blades 22A and 22B transfer the processed material M in the inclined direction while being stirred by the annular inner wall by the rotation of the rotating shaft 21. When the tilt angle is zero (in a direction orthogonal to the rotation axis), no thrust is generated to move the workpiece M in the axial direction, but when the angle θ is tilted close to 45 degrees, the workpiece M is shown in FIG. It is possible to flow in the a, b, c, and d directions.

  It is preferable that the stirring blades 22A and 22B have a shape that does not pulverize the aerobic microorganism culture material (bacteria bed such as wood chip), and the entire processed product flows in the tank. Since the ring-shaped stirring blade 22A (22B) shown in FIG. 5B has a ring shape, the degree to which the culture material is pulverized is low, and the ring has a predetermined angle (the angle θ shown in FIG. It is possible to increase the fluidity (propulsive force in the direction of the rotation axis) by setting <θ <45 degrees. The agitation motor KM is connected to the rotation axis 21 thus configured. A bearing 21 v shown in the figure is a bearing that supports the rotating shaft 21 on the side wall of the housing 11.

  As a different shape of the stirring blade, a structure in which a plurality of blade blades project in a direction substantially perpendicular to the rotation shaft 21 (see, for example, Japanese Patent Application Laid-Open No. 2004-315259), and a spiral blade on the rotation shaft 21 in a spiral shape. A structure for winding (see, for example, JP-A-2001-170605) is also known. Any of them may be adopted in the present invention.

  Thus, the rotating shaft 21 arrange | positioned in the processing tank 10 is connected with the stirring motor KM via the reduction gear and the coupling (not shown). Therefore, the processed material M moves in the direction a shown in FIG. 5A on the upper surface side of the stirring blade 22A, and moves in the b direction on the lower surface side of the stirring blade 22A. Further, the processed material M moves in the c direction on the upper surface side of the stirring blade 22B, and moves in the d direction on the lower surface side. Due to the rotation of the stirring blades 22A and 22B, the processed material M is not only vertically stirred but also laterally stirred, so that the entire processed material is uniformly stirred.

[Ring blade crushing mechanism]
As described above, the processed product M is stirred with one or a plurality of ring blades 22 and decomposed with microorganisms mixed therein. At this time, it is preferable to crush the processed material M with a stirring blade (ring blade; the same applies hereinafter) 22 to promote decomposition by microorganisms. In this case, the processed material M may contain things that cannot be easily crushed, such as the stems of flowering trees. In view of this, the illustrated apparatus comprises the stirring blade 22 and the tank wall 11a of the processing tank 10 as follows.

  As shown in the enlarged state in FIG. 5B, the stirring blade 22 is integrally formed with a plurality of protrusions 22y at predetermined intervals. As shown in FIG. 5, a plurality of protrusions 22y are formed at predetermined intervals over the entire length of the blade. And the crushing protrusion 11x which mutually fits with this protrusion 22y is integrally formed in the tank wall 11a of the processing tank 10. FIG. A plurality of the crushing protrusions 11x are also arranged on the tank wall 11a along the outer periphery of the ring blade 22.

  Accordingly, the processed material that requires time for the decomposition process, such as flower and wood pieces, is accumulated in the processing tank when being stirred by the stirring blade 22. Therefore, the crushing protrusions 11x are provided on the tank wall 11a at predetermined intervals, and the protrusions 22y that are concavo-convexly fitted to the crushing protrusions 11x are provided on the blade plate side to crush these pieces of wood.

[Configuration of tank environmental control mechanism]
The above-described processing tank 10 is provided with the following tank environment control mechanism. As described above, the processing tank 10 is composed of a housing with high airtightness. The treatment tank 10 is provided with a “warm air feeding mechanism 31”, an “exhaust mechanism 32”, a “water supply mechanism 14”, and a “bacteria bed air supply mechanism 40”.

  As shown in FIG. 1, the hot air feeding mechanism 31 includes a blower pipe 31S having an outside air introduction hole, a blower fan 31f and a heating heater 31h arranged in the blower pipe 31S, and the blower fan 31f has a fan. A motor 31M is connected. The heating heater 31h is electrically connected to a power supply circuit built in the controller 65 described later. As a result, air heated to a predetermined temperature is introduced into the treatment tank 10, and the heating temperature is set according to the properties of the aerobic microorganisms used.

  As shown in FIG. 4B, the exhaust mechanism 32 includes an exhaust duct 33 communicating with the processing tank 10, a suction fan (vacuum fan) 34 provided in the exhaust duct 33, and dust (waste and waste) in the processing tank. A filter device 35 for filtering a part of the fungus bed culture material) and a deodorizing device 36 are provided in the exhaust duct 33, respectively. A vacuum motor 34M is coupled to the suction fan 34 and is electrically connected to a driver circuit 73 built in a controller 65 described later. Further, the filter device 35 incorporates, for example, a dust removing mechanism (not shown) having a centrifugal separation structure so that the dust flowing into the exhaust duct 33 is not released to the outside.

  The deodorizing device 36 is configured to drop a deodorizing agent on the gas passing through the exhaust duct. Organic waste introduced into the treatment tank 10 may generate off-flavor gases such as carbon dioxide and methane in the process of being fermented and decomposed by the action of aerobic microorganisms in the tank. The same applies when a part of the organic waste is spoiled in the tank. For this reason, the exhaust duct 33 requires a deodorizing device 36 for mixing a deodorizing agent such as ozone. The illustrated one employs a structure in which ozone stored in a tank is dropped into an exhaust duct.

  As shown in FIG. 1, the water supply mechanism 14 includes a water supply tank 15, a pressure pump 16, and a water supply pipe 17. The water supply pipe 17 is disposed at the top of the treatment tank 10 and is provided with a plurality of watering nozzles 18. The water supply tank 15 is connected to a water supply pipe such as an external water pipe, and is provided with an external water quality improver mixing mechanism (not shown) such as a filtration filter (not shown) or a PH (hydrogen ion concentration index) regulator. . The water supply pipe 17 has a built-in solenoid valve that is opened and closed by a controller 65 described later. Accordingly, the controller 65 opens the solenoid valve and drives the pressurizing pump 16 so that the treatment tank 10 can be replenished with water from the water spray nozzle 18.

  The fungus bed air supply mechanism 40 supplies air to the treated material M and the culture material containing aerobic microorganisms that are stirred by the stirring blades 22 in the processing tank. This is to supply air suitable for aerobic microorganisms, and the air introduced by the warm air feeding mechanism 31 into the processing tank 10 is circulated to the processed product M. Therefore, a circulation pipe 48 is provided, and this circulation pipe 48 is connected to an air supply nozzle 41 disposed at the bottom of the processing tank. Reference numeral 45 denotes a pressurizing pump.

[Sensor structure]
The treatment tank 10 is provided with a moisture sensor HS and a temperature sensor TS. In particular, the present invention is characterized in that a dust amount detection sensor DS is arranged in the exhaust duct 33 described above. Each sensor structure will be described.

"Moisture sensor"
In the processing tank 10 described above, it is necessary to detect the water content of the processed product M. In the case of the above-described drying process, the moisture content of the processed product M is detected and the supply amount of the dry air is adjusted. In the case of the above-described mixing treatment, the water content is detected by adjusting the water content of the processed product M. In the case of the above-described decomposition treatment, the water content of the processed product M is detected to adjust the air supply amount or the supply amount of the temperature-controlled warm air.

  For this reason, the moisture sensor HS is disposed in the treatment tank 10. The moisture sensor HS is disposed on the tank wall 11 a of the processing tank 10. The moisture sensor HS is disposed at a location (detection unit 10x) for detecting the water content of the processed matter M accumulated in the treatment tank 10. The illustrated detection unit 10x is set below the minimum storage amount position HL (see FIG. 1) of the processed product M in the processing tank. As a result, even when a small amount of the processed product M is stored, the water content can be detected. Moreover, the detection part 10x is arrange | positioned at the tank wall 11a of the vicinity of the stirring means 20 so that the moisture content of the processed material M which flows through the inside of a processing tank may be detected by the stirring means 20 mentioned later.

"Temperature sensor"
The temperature sensor TS detects the temperature of the processed material M in the processing tank 10. This temperature sensor TS is composed of, for example, a thermistor, and the probe is embedded in the inner wall of the processing tank. And the temperature in a processing tank is detected with this probe, and the detected value is electrically transmitted to the controller 65 as a current value.

[Dust detection sensor]
The present invention is characterized in that the following dust amount detection sensor DS is disposed in the above-described processing tank 10 or in the exhaust duct 33 communicating with the processing tank 10. FIG. 4A shows a case where the dust amount detection sensor DS is arranged inside the processing tank 10. In the processing tank 10, a dust amount detection sensor DS is disposed in an upper space that accommodates the processed material M. The illustrated dust amount detection sensor DS is a reflective sensor, and includes a laser transmitting element 5a and a laser receiving element 5b in a sensor box 5x. The sensor box 5x is covered with a glass transparent cover (detection surface; the same applies hereinafter) 5y. The laser beam is emitted from the laser transmitting element 5a, and the laser receiving element 5b is constituted by a normal laser detector that senses the reflected light beam and performs photoelectric conversion.

  In particular, the illustrated apparatus applies cooling air to the transparent cover 5y of the sensor box 5x. For this reason, it blows with the ventilation fan 38f from the outside of a processing tank, cools to predetermined temperature with a cooling element (for example, Peltier element), leads to the sensor box 5x from the ventilation pipe 38p, and sends cooling air to the transparent cover (detection surface) 5y with the nozzle 38n. Blowing. 38M in the figure is a blower motor. The cooling air is blown to the detection surface (transparent cover) 5y of the laser detector in this way so that the characteristics of the laser transmitting element 5a and the laser receiving element 5b are cooled so as not to change due to temperature fluctuations in the processing bath 10. Because. At the same time, the dust is removed so that the detection error is not caused by the dust adhering to the detection surface 5y.

  Next, FIG. 4B shows a case where the dust amount detection sensor DS is built in the exhaust duct 33. As shown in the figure, the exhaust duct 33 is provided with a dust amount detection sensor DS between the vacuum fan 34 and the deodorizing device 36 so as to detect dust mixed in the gas passing through the exhaust duct. .

  The illustrated dust amount detection sensor DS detects a gas passing through the exhaust duct with a pair of detection probes Pa and Pb. The pair of probes Pa and Pb is composed of a light emitting element and a light receiving element, composed of an oscillation element and a vibration receiving element, or composed of electrodes facing each other. The illustrated detection probes Pa and Pb include a light emitting element 7a and a light receiving element 7b, and project visible light, infrared light, ultraviolet light, and laser light from the light emitting element 7a to the light receiving side. And it is comprised so that the light irradiated by the light receiving element 7b side may be photoelectrically converted, and the detected value may be transferred to the controller 65 mentioned later. As a result, the amount of dust contained in the gas in the exhaust duct can be detected from the difference between the light amount emitted from the light emitting element 7a and the light amount received by the light receiving element 7b.

  In addition, a pair of probes Pa and Pb can be configured by the oscillation element 7a and the vibration receiving element 7b, and an ultrasonic sensor structure that projects ultrasonic waves from the oscillation element 7a and receives by the vibration receiving element 7b can be configured. . Furthermore, it is also possible to detect the amount of dust contained in the gas in the exhaust duct by configuring the pair of probes Pa and Pb with electrodes facing each other and detecting the capacitance and electrical resistance value between the electrodes. .

  The present invention is characterized in that water is replenished by watering the water supply mechanism 14 when the bacteria bed in the tank is determined to be excessively dry based on the detection value of the dust amount detection sensor DS described above. For this reason, the control means (controller) 65 (refer FIG. 6) of the water supply mechanism 14 is demonstrated. (1) The “bacterial bed overdried state” is determined only from the detection value of the dust amount detection sensor DS, or (2) the “bacteria bed is determined from both the detection value of the moisture sensor HS and the detection value of the dust amount detection sensor DS. The “overdried state” is discriminated, or the “bacterial bed overdried state” is discriminated from any detected value.

(1) The case where the “bacteria bed overdried state” is determined only from the detection value of the dust amount detection sensor DS.
In this case, the detection value of the dust amount detection sensor DS is compared with a preset reference value, and the water supply mechanism 14 is controlled according to the comparison result. In other words, the properties of organic waste and the state of dust generated from the fungus bed (aerobic microorganisms and culture materials thereof) preliminarily specified as dust generated in the treatment tank 10 are set by experiments or the like. A reference value set as the amount of dust generated in a suitable bacteria bed state that normally operates and a detection value detected by the dust amount detection sensor DS are compared by a comparator, a bridge circuit, or the like. When the detected value is larger than the reference value in the comparison result, the water supply mechanism 14 is operated. For example, the solenoid valve is opened to supply water in the water supply tank 15 to the water supply pipe 17 and simultaneously the pressure pump 16 is driven to rotate. Thus, water is sprinkled from the water supply pipe 17 into the treatment tank and supplied to the fungus bed in the treatment tank. Further, when the detected value is smaller than the reference value in the above comparison result, the operation of the water supply mechanism 14 is stopped.

(2) A case where the “bacterial bed overdried state” is determined from both the detection value of the moisture sensor HS and the detection value of the dust amount detection sensor DS.
In this case, the detection value of the dust amount detection sensor DS and the detection value of the moisture sensor HS are respectively compared with preset reference values. In other words, the amount of dust and water content in a suitable microbial bed state in which microorganisms normally function are obtained as experimental values, and the reference value set by this is compared with the detection value of the moisture sensor HS. The reference value and the detection value of the dust amount detection sensor DS are compared. When both comparison values are larger than the reference value (and condition), or when one of both comparison values is larger than the reference value (or condition), the water supply mechanism 14 is operated. Further, when both the comparison values are smaller than the reference value (and condition), or when one of the both comparison values is smaller than the reference value (or condition), the operation of the water supply mechanism 14 is stopped.

  Next, the operation of the moisture sensor HS described above and the controller 65 in the apparatus of FIG. 1 will be described. The controller 65 is constituted by a microcomputer (microcomputer) or an electronic circuit. FIG. 6 shows a conceptual diagram of electronic control. The controller 65 is connected to the output terminals of the temperature sensor TS and the moisture sensor HS described above. And the temperature sensor TS is comprised, for example with a thermistor, detects the temperature in a processing tank, and transmits the detected value to the controller 65 as a current value. Therefore, the controller (control means) 65 compares each input detection value with a reference value set in advance by the comparison means 66. The comparison means 66 is constituted by a comparator or a resistance bridge circuit.

  Therefore, the control means (controller) 65 compares the detected value from the temperature sensor TS with a preset reference value, and stops the blowing of the warm air feeding mechanism 31 when the temperature in the tank is higher than the reference temperature. Alternatively, power supply to the heater 31h inside the warm air feeding mechanism is stopped. Further, when the temperature in the tank is lower than the reference temperature, the blowing of the warm air feeding mechanism 31 is started or the heater 31h in the warm air feeding mechanism is supplied with power. This temperature control is performed by the processing tank temperature control circuit 67. In addition, the control means (controller) 65 compares the detected value of the moisture sensor HS with the reference value and starts the blowing of the above-described hot air feeding mechanism 31 when the water content is high, or inside the hot air feeding mechanism. Power is supplied to the heater 31h.

  Further, when the water content is less than the reference value, water is supplied from the watering nozzle 18 disposed in the water supply pipe 17. This water amount control is performed by a water supply necessity determination circuit 68. The control means (controller) 65 supplies preset air from the fungus bed air supply mechanism 40 into the processing tank irrespective of the detection values of the moisture sensor HS and the temperature sensor TS. Therefore, the air supply motor is rotated at a predetermined rotation. Similarly, the stirring motor KM is rotated at a predetermined rotation speed at a preset rotation speed regardless of the detection values of the moisture sensor HS and the temperature sensor TS. This control is performed by the stirring air supply control circuit 69.

A Organic waste processing apparatus M Processed product 5a Laser transmitting device 5b Laser receiving device 5x Sensor box 5y Transparent cover (detection surface)
7a Light emitting element (Pa)
7b Light receiving element (Pb)
10 treatment tank 11 outer casing (housing)
11a Tank wall 14 Water supply mechanism 15 Water supply tank 16 Pressure pump 17 Water supply pipe 18 Water spray nozzle 20 Stirring means 21 Rotating shaft 22 Stirring blades (22a to 22c)
22A, 22B Ring blade
22x Support stem 22y Projection 31 Hot air feed mechanism 31f Blower fan 31S Blower pipe 31h Heater 31M Fan motor 32 Exhaust mechanism 33 Exhaust duct 34 Suction fan (vacuum fan)
34M Vacuum motor 35 Filter device 36 Deodorizing device 38f Blower fan 38n Nozzle 38p Blower pipe 38M Blower motor 40 Bacteria bed air supply mechanism 41 Air supply nozzle 42 Air supply port (nozzle port)
45 Pressurizing pump 48 Circulation pipe 52 Ring blade (second embodiment)
60 Tank environmental control mechanism 62 Control box 65 Controller (control means)
66 Comparison means 67 Processing tank temperature control circuit 68 Water supply necessity determination circuit 69 Stirring air supply control circuit 73 Driver circuit (vacuum motor)
TS Temperature sensor HS Moisture sensor DS Dust amount detection sensor KM Stirring motor M2 Drive motor Pa, Pb Probe

Claims (7)

An organic waste treatment apparatus that decomposes organic waste with microorganisms,
A treatment tank containing the organic waste;
Agitation means for agitating the organic waste disposed in the treatment tank and a treatment substance for decomposing the organic waste;
Water supply means for supplying moisture into the treatment tank;
Air adjusting means for supplying and exhausting air into the treatment tank;
Control means for controlling the water supply means and the air supply means;
With
The control means has dust amount detection means for detecting dust scattered by the stirring means,
The control means controls the water supply amount of the water supply means and / or the air supply amount of the air adjustment means based on the detection result of the dust amount detection means. 2. The organic waste treatment according to claim 1, wherein the control unit includes a determination unit that determines whether or not to supply moisture into the treatment tank based on a detection result from the dust amount detection unit. apparatus. The control means includes
A moisture sensor for detecting the amount of moisture in the treatment tank;
The dust amount detecting means;
With
2. The organic waste treatment apparatus according to claim 1, wherein the control means controls the amount of water supplied into the treatment tank based on detection results of the dust amount detection means and the moisture sensor. In the treatment tank,
An air supply duct for introducing outside air at a predetermined temperature inside;
An exhaust duct for leading the air in the treatment tank to the outside;
Is provided,
The organic waste treatment apparatus according to claim 1, wherein the dust amount detection means is arranged in the treatment tank or the exhaust duct. The dust amount detection means includes a light emitting unit and a light receiving unit,
This light emitting part emits light of visible light, infrared light, ultraviolet light, laser light,
The organic waste treatment apparatus according to claim 1, wherein the light receiving unit includes a photoelectric conversion unit that converts an amount of light received from the light emitting unit as an electrical signal. The treatment tank is provided with a moisture sensor for detecting the water content of the treatment substance inside,
2. The organic waste treatment apparatus according to claim 1, wherein the control means controls the water absorption amount of the water supply means based on detection results from the moisture sensor and the dust amount detection means. The stirring means includes
A rotation axis;
A stirring blade attached to the rotating shaft;
Consists of
This stirring blade is composed of one or a plurality of annular plate members,
2. The organic waste treatment apparatus according to claim 1, wherein the plate member is attached to the rotary shaft in a state inclined at a predetermined angle in the axial direction with respect to the rotary shaft.

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