JP2006007130A - Garbage disposer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a garbage disposer capable of realizing a reduction in running cost and an equipment cost by effectively utilizing high-temperature waste heat from a deodorizing vessel in the course of heating and deodorizing for heating the gas in a treating vessel. <P>SOLUTION: In the garbage disposer having a treating vessel decomposing garbage utilizing the power of microorganisms and a heating and deodorizing means 27 heating and deodorizing exhaust air accompanying malodor generated in the treating vessel when heating the treating vessel and decomposing garbage, and discharging the exhaust air to the outside of the treating vessel, an exhaust duct 26a arranged in the treating vessel and introducing the exhaust air from the heating and deodorizing means to the outside of the treating vessel, and a circulating duct 32 installed at the outside of the exhaust duct and having a circulating passage for gas in the treating vessel are provided. Heat is exchangeable between the high temperature exhaust air in the exhaust duct and the gas in the treating vessel circulating in the circulating duct. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a waste treatment apparatus, and more particularly to a waste treatment apparatus that can effectively use waste heat from a deodorizer.

  In the conventional waste treatment apparatus, for example, when exhausting from a deodorizer incorporating an oxidation catalyst as disclosed in Patent Document 1, there is a technique for keeping the treatment tank warm by using exhaust heated to a high temperature. Are known. In the thing of this patent document 1, in the waste disposal apparatus which decomposes | disassembles garbage using the force of microorganisms, by heating the heating chamber formed in the lower surface part side of a garbage processing tank with high temperature exhaust_gas | exhaustion, It is intended to keep the temperature at a temperature at which microorganisms are actively activated during the decomposition process of garbage.

Moreover, in patent document 2, in the waste processing apparatus which decomposes | disassembles garbage, the circulation path which circulates the air in a processing tank is formed, and the heat exchanger which cools the air which circulates in the circulation path in a circulation path Is arranged, the temperature in the treatment tank is detected by a temperature sensor, the operation rate of the circulation blower is changed, and the amount of water in the treatment tank is controlled.
JP 2000-079383 A JP 09-124385 A

However, the waste treatment apparatus disclosed in Patent Document 1 heats the heating chamber formed on the lower surface side of the garbage treatment tank with high-temperature exhaust gas. In such a heating system, the waste treatment tank There is a problem in that heat cannot be uniformly applied to the entire interior, and therefore, temperature unevenness can occur in the waste treatment tank, the inhabiting temperature of microorganisms becomes sparse, and the efficiency of the decomposition treatment is reduced.
Further, as in the waste treatment apparatus of Patent Document 2 described above, in the case of controlling the temperature of the air circulating in the circulation path by changing the operation rate of the circulation blower, the gas circulating in the circulation path In some cases, the temperature is cooled and the moisture amount cannot be controlled properly.

  In view of the above problems, the present invention can effectively use the high-temperature exhaust heat from the deodorizer during heating and deodorization for heating the gas in the treatment tank, thereby reducing the running cost and the apparatus cost. It is an object of the present invention to provide a waste treatment apparatus that can perform the above-described process.

The present invention provides a waste disposal apparatus configured as follows.
That is, the waste treatment apparatus of the present invention includes a treatment tank that decomposes waste using the power of microorganisms, and an odor that is generated in the treatment tank when the treatment tank is heated and decomposed. A waste treatment apparatus having a heating and deodorizing means for deodorizing and discharging the exhaust gas to the outside of the treatment tank, an exhaust duct disposed inside the treatment tank and guiding the exhaust from the heating and deodorization means to the outside of the treatment tank; A circulation duct provided outside the exhaust duct and having a gas circulation path in the treatment tank, and between the high-temperature exhaust in the exhaust duct and the gas in the treatment tank circulating in the circulation duct And it is characterized by being comprised so that heat exchange is possible.
In the waste treatment apparatus of the present invention, the exhaust duct disposed in the treatment tank is disposed in the vicinity of the heating and deodorizing means, and the high-temperature exhaust from the heating and deodorizing means is vented. be able to.
In the waste treatment apparatus of the present invention, the exhaust duct disposed in the treatment tank is connected to an exhaust duct outside the tank disposed in the vicinity of the side wall of the treatment tank, and the exhaust duct outside the tank The heat can be transferred from the side wall of the treatment tank.

  According to the present invention, the high-temperature exhaust heat from the deodorizer during heating and deodorization can be effectively used for heating the gas in the treatment tank, and it is possible to reduce running costs, apparatus costs, and the like. It becomes possible to realize a waste treatment apparatus.

  The waste treatment apparatus of the present invention is configured to discharge the high-temperature exhaust gas heated and deodorized in the deodorization unit to the outside of the treatment tank through the exhaust duct disposed in the tank, and the exhaust duct disposed in the tank. A circulation duct in which a gas circulation passage in the treatment tank is formed is provided so as to surround the outside of the treatment tank, and heat exchange is efficiently performed between the high-temperature exhaust gas passing through the exhaust duct and the gas in the treatment tank circulating through the circulation duct. By doing so, the exhaust heat of the deodorizing part can be effectively used for heating of the treatment tank.

Hereinafter, the waste disposal apparatus according to the embodiment of the present invention will be described in more detail with reference to the drawings.
FIG. 1 is a schematic perspective view showing a configuration of a waste disposal apparatus according to an embodiment of the present invention.
2 is a schematic cross-sectional view of the waste treatment apparatus as seen from the view A in FIG. 1, and FIG. 3 is a schematic diagram showing a ventilation path when the waste treatment apparatus is seen from the upper surface.
FIG. 4 is a schematic perspective view of the waste disposal apparatus according to the embodiment of the present invention when the exterior cover is mounted.
FIG. 5 is a schematic diagram showing the positions of the deodorizing unit and the exhaust fan of the waste treatment apparatus in the embodiment of the present invention.
FIG. 6 is a schematic diagram showing a piping configuration of the waste disposal apparatus in the embodiment of the present invention, and (a) to (d) are schematic diagrams showing various modifications of the piping configuration. Moreover, FIG. 7 is a figure which shows the temperature / humidity in the processing tank of the waste processing apparatus in embodiment of this invention.

The outline of the configuration of the waste disposal apparatus in the embodiment of the present invention will be described with reference to FIGS.
1 to 4, 1 is a drive motor that rotates forward and backward of a power source, 2 is a small sprocket fixed to the tip of the output shaft of the drive motor 1, 3 is a chain that meshes with the small sprocket 2, and 4 is meshed with the chain 3 The large sprocket, 5 is a stirring blade for stirring the waste, 6 is a stirring shaft for rotating the stirring blade 5, and 7 is a bearing for supporting the stirring shaft 6. The stirring means of the present invention is constituted by these members. ing.

Reference numeral 8 denotes an exterior part as a frame covering the waste treatment apparatus, and 10 is a (waste) treatment tank provided in the exterior part 8 for treating waste. The processing tank 10 includes a processing tank side plate right 14 and a processing tank side plate left 15 as a pair of side walls provided opposite to each other, and a tank unit 10 provided horizontally between the pair of side walls. Is done. 11 (11a, 11b) is a partition plate for partitioning the processing tank 10 into a plurality of tanks (10b, 10c, 10d). A planar heater 9 as a heating means for heating the processing tank 10 is provided at a lower portion (tank portion 10 a) of the processing tank 10. Reference numeral 12 is a base material for decomposing waste, and 13 is a base material state measuring sensor for detecting the state of the decomposition process. 16 is an exhaust fan for exhausting moisture and carbon dioxide generated by supplying oxygen to the microorganisms and decomposing, 17 is an intake port for taking outside air into the treatment tank 10, and 18 is carbon dioxide generated in the treatment tank 10. An exhaust port for discharging, 19 is a magnet attached to the loading lid 21 of the processing tank 10, 20 is a loading lid open / close detection sensor for detecting a magnet attached to the loading lid 21, 21 is a loading lid, and 22 is a loading for throwing in waste. The mouth.
23 is a control unit that controls the whole, 24 is a vent, 25 is a dust removal filter that removes dust generated from the inside of the treatment tank 10, and 26 (26 a, 26 b, 26 c) communicates the exhaust port in the treatment tank 10 with the outside air. The exhaust duct 27 is heated by the catalyst heater 27a by the odorous air generated from the treatment tank 10 and deodorized as deodorizing means for deodorizing using the oxidation catalyst 27b, and 28 detects the outlet temperature of the deodorized section 27. It is a temperature sensor.

  Also, 29 is an outside air intake as an outside air intake provided at the upper part of the exterior portion 8, 31 is a ventilation fan that forcibly creates a flow of outside air taken in from the outside air intake, and 30 is a frame that covers the waste treatment apparatus It is a bottom plate which is a part of the exterior portion 8 as a body. Reference numeral 32 denotes a circulation duct arranged outside the exhaust duct 26 a provided in the treatment tank 10 and constitutes a gas circulation passage in the treatment tank 10. Reference numeral 33 denotes a gas suction for sucking the gas in the treatment tank 10 into the circulation duct 32. Reference numeral 34 denotes a circulation fan that circulates the gas in the treatment tank 10, and reference numeral 35 denotes an exhaust outlet that discharges decomposition residues after the waste is treated in the treatment tank 10.

  Next, the operation of the waste disposal apparatus configured as described above will be described. The treatment tank 10 has a stirring shaft 6 that rotates forward and backward in the center, and a base material 12 is contained therein. The base material 12 is composed mainly of sawdust, which is hardly biodegradable, and each grain is porous, has water absorption and voids, has a complicated particle shape, and large voids are formed between the particles. Yes. Since the oxygen can be supplied to the treatment organism through the voids, the efficiency of the waste decomposition treatment is improved. In addition, the treatment organisms that decompose the waste in the mixture at this time are aerobic microorganisms and fungi.

  Moreover, even if the base material 12 in the processing tank 10 is buckwheat husk other than sawdust, rice bran, etc., it can maintain a space | gap and can supply oxygen to a processing organism, Therefore It is suitable as the base material 12. . Moreover, although the base material 12 uses the fiber sawdust which is hard to be biodegraded in the present embodiment, it may be a ceramic having a function capable of supplying oxygen to the treated organism while maintaining a void. Alternatively, even when the base material 12 using a processed product obtained by treating only garbage with a waste processing apparatus as a seed base material is used, the base organism 12 is already living or dormant in the active state. It is suitable as.

When the input lid 21 of the waste disposal apparatus in operation is opened, the input lid open / close detection sensor 20 that has detected the magnet 19 of the input lid 21 determines that the input lid 21 has been opened, and is driven in the stirring state. Motor 1 stops.
Here, the closing lid opening / closing detection means including the magnet 19 attached to the closing lid 21 and the closing lid opening / closing detection sensor 20 is composed of a magnetic sensor that reacts to magnetism attached to the processing tank 10. Protruding portions may be provided on the surface and the protruding portions may be detected by an optical sensor attached to the processing tank 10 side.
The closing lid opening / closing detection sensor 20 uses a non-contact type magnetic detection sensor in the present embodiment, but may be a mechanical micro switch.
Further, the loading lid open / close detection sensor 20 can be attached by attaching a detection sensor to the loading lid 21 side, the processing tank 10 side, the charging lid 21 or the processing tank 10 and a detection member to the other. is there.

Next, the stirring operation after the waste is charged will be described.
In the stirring operation by the drive motor 1 after throwing in the waste, for example, the forward and reverse stirring is usually performed for 5 minutes in a cycle of 30 minutes, but immediately after the waste is thrown in, the stirring is started immediately, for example, 30 By performing forward and reverse stirring for 10 minutes during the minute period, the input waste can be finely crushed and mixed with the base material 12 evenly.
Further, by performing forward and reverse rotation, it is possible to prevent the thrown-in waste from being entangled with the stirring blade 5.
Furthermore, in addition to the effect of mixing the base material 12 and the waste, the stirring makes it possible to stabilize the temperature of the mixture and to actively release moisture contained in the mixture to the outside of the mixture. Thus, the water content of the mixture can be adjusted.

Moreover, since the thrown-in waste can be decomposed within 24 hours, when the waste is not thrown in for more than 24 hours, the stirring motor is stopped for 5 minutes and the drive motor 1 required for stirring is stopped for 55 minutes. The power supply to can be reduced and power saving can be achieved.
Further, in the present embodiment, the stirring blade 5 has a rod-like cross section and is configured to be attached to the stirring shaft 6 at a predetermined interval. However, the stirring blade 6 is provided with a plurality of flat stirring blades 5. It is also possible to attach at intervals of. In addition, a plurality of stirring rods having a triangular cross section may be attached to the stirring shaft 6 at predetermined intervals.

  Here, as shown in FIGS. 1 to 3, the cross-sectional shape of the treatment tank 10 is substantially U-shaped having an arc portion of approximately a semicircle or more so that the entire substrate 12 is uniformly stirred by a light action. It has become. A stirring shaft 6 is provided in the horizontal direction so as to coincide with the center of the arc of the arc portion. A plurality of stirring blades 5 are fixed to the stirring shaft 6 at a predetermined interval. In the present embodiment, the stirring shaft 6 is horizontally mounted on the processing tank 10, but the processing tank may be substantially cylindrical and the stirring shaft 6 may be provided in the processing tank 10 in the vertical direction.

Further, at this time, since water and carbon dioxide gas are generated by stirring more than when stirring is stopped, the exhaust flow rate of the exhaust fan 16 is increased, and at the same time as supply of oxygen from the intake port 17, By discharging the gas to the outside of the processing tank 10, it is possible to prevent the mixture in the processing tank 10 from becoming damp and to adjust the moisture content of the mixture.
In this embodiment, the exhaust fan 16 is attached to the exhaust duct 26 in the exhaust duct 26 after passing through the deodorizing portion 27 communicating with the exhaust outlet 18 in this embodiment. A similar result can be obtained even if a fan is attached to 17 and sucked.

The fan attached to the air inlet 17 may be a hot air fan capable of sending air heated from about 40 ° C. to about 70 ° C. into the processing tank 10. By attaching a hot air fan to the intake port 17, the temperature of the gas in the treatment tank 10 can be raised. Since the amount of saturated moisture contained in the gas increases as the temperature of the gas in the treatment tank 10 rises, if the aeration flow rate per hour is the same, more water in the mixture is removed from the treatment tank 10 in a short time. You can go outside. The attachment of the hot air fan to the intake port 17 is effective as a means for adjusting the moisture content of the mixture when the mixture becomes humid.
The same result as described above can be obtained by providing the exhaust fan 16 in the exhaust duct 26 communicating with the exhaust port 18 and providing the hot air fan in the intake port 17.

In this way, the waste introduced into the treatment tank 10b and the base material 12 are uniformly mixed, and the decomposition process starts.
When the processed material decomposed in the processing tank 10b increases, it overflows from the partition plates 11a and 11b provided in the processing tank 10, and the processed material sequentially moves from the upstream processing tank 10c to the downstream 10d. To do.
When the processed product is accumulated in the processing tank 10d, the processed product can be collected from the discharge port 35. In the present embodiment, the processing tank 10 is divided into three tanks by the partition plate 11, but may be divided into two layers or four or more tanks.
Furthermore, it is possible to control the stirring operation time according to the result measured by the substrate state measuring sensor 13. For example, the intermittent operation time of stirring is usually sufficient for 5 minutes during a 30-minute cycle, but 2 minutes during the 30-minute cycle when the substrate is dry. As the stirring time, the base material 12 can be prevented from being crushed due to excessive stirring, and the life of the base material 12 can be extended.

Moreover, it becomes possible to adjust the moisture content of the mixture of a base material and a waste material by adjusting a stirring cycle and an exhaust flow rate according to the result measured by the base material state measurement sensor 13. When the inside of the treatment tank 10 becomes humid, anaerobic bacteria grow, generate hydrogen sulfide, etc., and the odor state becomes a bad odor. Therefore, the moisture content of the base material 12 and waste is 20% to 60%. It is desirable to adjust within the range.
Further, when the amount of water increases, the torque required for stirring increases, and the motive force is generated. When the substrate 12 is finely powdered, it tends to be clayy when it contains water. If the base material 12 becomes clay-like, the decomposition efficiency becomes extremely low. In such a case, the whole or a half or more of the base material 12 needs to be replaced.

Further, the substrate state measurement sensor 13 which is the substrate state measurement means at this time directly contacts the substrate 12 in the processing tank 10 with a pair of electrodes, and applies a voltage between the pair of electrodes, Although it is a resistance method that measures the current flowing between the base materials 12 and measures the moisture content of the base material 12, it may be a heat capacity method combining a heater and a thermistor.
In addition, since the mixture of the base material 12 and the waste changes to weak alkalinity or weak acidity depending on the type of garbage that is the input waste, the material constituting the electrode in direct contact with the mixture in the resistance method is: It is recommended to use a stainless steel material excellent in acid resistance and alkali resistance. In the present embodiment, stainless steel screws that are versatile and inexpensive are used as electrodes.

Next, when the waste input is interrupted or the input amount is reduced, the substrate 12 may be dried too much by stirring or the like. At this time, the microorganisms in the base material 12 are not only activated slowly due to drying and the processing efficiency is lowered, but also have the disadvantage that they are scattered when the base material 12 is pulverized to contaminate the surroundings. Moreover, since the microbe mixed in the fine powder is scattered at this time, it is not preferable for safety and health.
In such a case, the above-mentioned disadvantage can be compensated by preventing the fine powder from being discharged to the outside by the dust filter 25 provided at the exhaust port 18.
Further, the dust removal filter 25 is mechanically engaged with the exhaust port 18 or fixed with a thumbscrew or a snap lock so that it can be removed manually without using an instrument. By removing the dust filter 25, the fine powder of the base material attached to the dust filter 25 can be easily cleaned.
Further, the odorous air generated from the treatment tank 10 is heated by the catalyst heater 27a in the deodorization unit 27, deodorized using the oxidation catalyst 27b, and exhausted to the outside of the processing machine through the exhaust duct 26.

In the waste treatment apparatus as described above, the use of exhaust heat from the deodorizing unit 27, which is a characteristic configuration of the waste treatment apparatus of the present embodiment, will be described.
In this Embodiment, as shown in FIGS. 1-3, the deodorizing part 27 is provided in the vicinity of the right side board 14 of a processing tank.
The high-temperature exhaust gas deodorized by heating in the deodorization unit 27 first passes through the exhaust duct 26a piped in the tank, passes through the exhaust duct 26b piped to the left side plate 15 of the treatment tank outside the tank, and finally The exhaust fan 16 discharges to the outside air through an exhaust duct 26c piped below the treatment tank 10 outside the tank.
Here, on the outside of the exhaust duct 26a, a circulation duct 32 constituting a gas circulation passage in the processing tank 10 is formed. The circulation duct 32 is provided with a gas suction port 33 for sucking the gas in the processing tank 10 and a circulation fan 34 for circulating the gas in the processing tank 10 at the other end.
With this configuration, the processing tank 10 circulates the gas in the processing tank 10 between the processing tank 10 and the circulation passage, and circulates through the high-temperature exhaust gas passing through the exhaust duct 26a and the circulation duct 32. It is possible to efficiently exchange heat between the gases in the inside, and to effectively use the exhaust heat of the deodorization unit for heating the treatment tank 10.
Moreover, the gas in the processing tank 10 is circulated by the circulation fan 34, whereby the gas temperature in the processing tank 10 is increased, and moisture evaporation from the substrate 12 and the processed material is promoted.

In FIG. 7, the result of having measured the temperature and humidity in the processing tank 10 is shown. Here, a circulation duct 32 constituting a gas circulation path in the treatment tank 10 is provided outside the exhaust duct 26 a provided in the treatment tank 10, and the circulation fan 34 that circulates the gas in the treatment tank 10 is operated. The temperature and humidity in the treatment tank 10 were measured at the time and when the circulation fan was stopped.
By operating the circulation fan 34 as shown in FIG. 7, the temperature in the treatment tank 10 became 56 ° C. on average, and 13 ° C. higher than the average temperature 43 ° C. when the circulation fan 34 was stopped.
Further, the amount of water contained in 1 m ³ of gas in the processing tank 10 obtained from the humidity in the processing tank 10 at this time is 44 g when the circulation fan 34 is operated, and the moisture when the circulation fan 34 is stopped. 17g more than 27g.

Here, when the amount of moisture contained per 1 m ³ of gas in the treatment tank 10 is increased, when a certain amount of moisture (water vapor) is released to the outside of the treatment tank 10, the gas in the treatment tank 10 is 1 m. ^{As the} amount of water contained per ³ increases, the amount of exhaust from the treatment tank 10 containing these water (water vapor) that passes through the deodorizing unit 27 can be reduced. Therefore, it is possible to select an exhaust fan having a small exhaust capacity and low power consumption at the time of design.
Ideally, water (water vapor) can be discharged most efficiently if it can be contained up to the saturated water vapor amount of gas in the treatment tank 10 (up to 100% in relative humidity).

In the present embodiment, the deodorizing unit 27 has a catalyst heater 27a disposed upstream of the oxidation catalyst 27b such as a platinum alloy, and heats exhaust gas passing through the catalyst heater 27a to a predetermined temperature (in this case, about 280 ° C.). Then, it is deodorized by contacting with the oxidation catalyst 27b.
At this time, the power required for the catalyst heater 27a to raise the temperature of the exhaust gas is roughly proportional to the flow rate of the exhaust gas exhausted from the processing tank 10, and when the flow rate of the exhaust gas may be small, the catalyst heater 27a The amount of power supplied by can be reduced.

  In the present embodiment, as is clear from the above description, a circulation duct 32 constituting a gas circulation passage in the processing tank 10 is provided outside the exhaust duct 26a provided in the processing tank 10, and the processing tank 10 is provided with a gas inlet 33 for sucking the gas in the circulation duct 32 and a circulation fan 34 for circulating the gas in the treatment tank 10 at the other end, thereby circulating the gas in the treatment tank 10 and discharging moisture. The flow rate of the exhaust gas containing these moisture (water vapor) can be reduced by the amount of improvement, and if an exhaust fan with low power consumption is used, the heating time by the catalyst heater 27a can be reduced and the deodorizing unit 27 can be reduced. The power consumption can be reduced.

  Furthermore, after the high-temperature (around 280 ° C.) exhaust gas generated from the deodorization unit 27 passes through the exhaust duct 26a, heat can be reduced into the treatment tank 10 by passing through the exhaust ducts 26b and 26c. The heat given in 27 can be used evenly. Further, the heat exchange in the exhaust duct 26c leads to a reduction in the operating cost of the planar heater 9. In the apparatus of FIG. 1, when the outside air is 25 ° C., heat exchange in the exhaust duct 26c can keep the temperature at about 40 ° C. in the vicinity of the exhaust duct 26c at the bottom of the treatment tank 10, and the effect of disposing the exhaust duct 26c The cylindrical heater 9 can reduce heat radiation to other than the treatment tank 10.

Further, the exhaust fan 16 is configured downstream of the deodorizing unit 27.
This is the ideal gas equation pv = RT
(Where p: pressure, v: volume, R: gas constant, T: absolute temperature (K))
This is a reflection of the idea.
Since gas generally expands in the isobaric state when heat is applied, the volume does not expand at room temperature, so it easily passes through the deodorizing unit 27, but generates a large resistance in the deodorizing unit 27 at a high temperature. , Can not pass easily. Therefore, when the exhaust fan 16 is configured upstream of the deodorizing unit 27 as shown in FIG. 5A, the inside of the deodorizing unit 27 is pressurized, and the gas that cannot be advanced by the resistance of the deodorizing unit 27 is exhausted from the exhaust port 18 and the deodorizing unit 27. Leaks from the gap generated between the two, resulting in odor. Therefore, as shown in FIG. 5B, the exhaust fan 16 is provided on the downstream side of the deodorizing unit 27 to depressurize the inside of the deodorizing unit 27 so that odors do not leak from a gap in the middle.

  Moreover, in this Embodiment, the deodorizing part 27 is comprised in the right side board 14 side of the processing tank, and the exhaust duct 26b is comprised in the left side board 15 side of the processing tank. If comprised in this way, since the heat source given to the base material 12 is not only the planar heater 9 attached to the lower part of the processing tank 10, but also from both sides of the processing tank 10 and the upper side by the exhaust duct 26a, the base material 12 Can be efficiently applied from all four sides, and the processing efficiency can be improved by reducing the temperature unevenness. Furthermore, it is more effective to configure the exhaust duct 26c below the processing tank 10.

Moreover, the exhaust duct 26b should just be provided in at least any one among the processing tank side plates 14 and 15, and in at least any one of the processing tank side plates 14 and 15, the processing tank 10 is only connected by the exhaust duct 26b. It is good to heat. Thereby, it is not necessary to provide a heater on the processing tank side plates 14 and 15, and the apparatus configuration can be simplified and the cost can be reduced.
Here, the deodorizing part 27 and the exhaust duct 26b are not directly applied to the processing tank 10 (processing tank side plates 14 and 15), and it is preferable to provide a gap (or an interposed member). The exhaust in the deodorizing section 27 and the exhaust in the exhaust duct 26b are high in temperature, and when directly applied to the treatment tank, they do not pass through those having low thermal conductivity such as air, so that the treatment tank side plates 14 and 15 are warmed to a high temperature. As a result, the microorganisms that process the waste are killed by the high temperature.

And since the exhaust duct 26b efficiently heats the base material 12 through the left side plate 15 of the processing tank, in this embodiment, the exhaust duct 26b is formed on the side surface of the left side plate 15 of the processing tank with a gap of 5 to 10 mm. It is configured to pass through. Passing the side surface of the left side plate 15 of the treatment tank is very low in thermal conductivity of air. Therefore, if the exhaust duct is separated from the treatment tank side plate by 5 to 10 mm or more, the heat transferred from the exhaust duct is sufficiently transmitted. It is because it is not possible.
Therefore, as shown in FIGS. 6 (a), 6 (b), 6 (c), and 6 (d), it is desirable to pass through a location corresponding to the location where the substrate 12 is carried. (It is good that each projection part formed by projecting the exhaust duct 26b and the stirring region by the stirring blade 5 in the axial direction of the stirring shaft 6 overlaps at least partially). Thereby, heat can be positively given to the processing tank 10 also from the side wall, and furthermore, the heat can be efficiently supplied to the base material 12.

  Further, since the exhaust duct 26b is configured on the left side plate 15 side of the treatment tank, a space in the width direction of the waste treatment apparatus is required. Therefore, in order to save space, the exhaust duct 26 is formed so as not to protrude in the width direction from the protruding portion of the bearing 7 that supports the stirring shaft 6 (the exhaust duct 26b is substantially orthogonal to the left side plate 15 of the processing tank. In the direction to be arranged in the region from the left side plate 15 of the processing tank to the vicinity of the end of the bearing 7). Here, the cross-sectional shape of the exhaust duct 26b is more effective than the circular shape because the ventilation area can be increased by making the shape of a substantially rectangular shape that hardly protrudes in the width direction of the apparatus. By configuring the exhaust duct 26b in this manner, it is not necessary to widen the width of the waste treatment apparatus in order to use the exhaust duct 26b, so that space saving can be achieved, resulting in a reduction in material.

  Further, the space in which the exhaust duct 26b is provided may be enclosed by the left side plate 15 (outer wall) of the processing tank and the exterior portion 8, and the space of the exhaust duct 26b may be a closed chamber (closed space). By making the chamber closed, the heat transfer gas can be confined, the unevenness of heat applied to the left side plate 15 of the processing tank can be reduced, and the entire left side plate 15 of the processing tank can be warmed more effectively. Furthermore, by setting a boundary with the outside air, it also leads to heat insulation of the waste treatment apparatus. Since the waste heat is used for heating, the operation cost can be reduced and the operation efficiency can be improved.

  In addition, a partition plate 11 (11a, 11b) for partitioning the inside of the processing tank 10 into a plurality of tanks is provided, and the thrown-in waste sequentially overflows, and the residue after decomposition processing into the processing tank 10d on the side opposite to the charging port 22 In the configuration provided with the discharge port 35 for taking out the gas, a circulation duct 32 constituting a gas circulation passage in the processing tank 10 is provided outside the exhaust duct 26a provided in the processing tank 10, and the charging port 22 is provided. A gas suction port 33 for sucking the gas in the treatment tank 10 into the circulation duct 32 is provided on the side of the gas supply side, and a circulation fan 34 for circulating the gas in the treatment tank 10 is provided on the discharge port 35 side.

With such a configuration, the waste introduced into the processing tank 10b from the input port 22 is uniformly mixed with the base material 12 filled in the processing tank 10 by rotating the stirring shaft 6 having the stirring blades 5. The disassembly process begins.
When the processed material decomposed in the processing tank 10b increases, it overflows from the partition plates 11a and 11b provided in the processing tank 10, and the processed material moves to the processing tanks 10c and 10d.
When the processed product is accumulated in the processing tank 10d, the processed product can be collected from the discharge port 35.

In addition, the input waste contains water or has a high moisture content of 30 to 80% due to generation of water accompanying the decomposition process, but the processed product discharged from the treatment tank 10d is discarded in the dry state. Since processing becomes easy, drying is desired.
Further, the high-temperature (around 280 ° C.) air generated from the deodorizing unit 27 is a gas in the treatment tank 10 that is ventilated in the exhaust duct 26a and the circulation duct 32 disposed outside the exhaust duct 26a by the circulation fan 34. Heat exchange is performed between the two, and the gas in the treatment tank 10 can be heated.
Further, the gas in the processing tank 10 is circulated by the circulation fan 34, whereby the gas temperature in the processing tank 10 rises to promote moisture evaporation from the base material 12 and the processed material, and the gas in the processing tank 10 is 1 m ^3. The amount of water contained in the peripheries increases, and the ability to evaporate the water contained in the mixture and discharge it to the outside of the mixture is improved.

In view of the above, the circulation fan for providing the gas suction port 33 for sucking the gas in the processing tank 10 into the circulation duct 32 on the input port 22 side and circulating the gas in the processing tank 10 on the discharge port 35 side. With the structure provided with 34, the gas in the circulating duct 32 and the processing tank 10 is exchanged in the processing product accumulated in the processing tank 10d by aeration from the low moisture content side to the high side of the mixture. By allowing the gas immediately after the aeration to occur, the gas temperature in the processing tank 10 rises, and moisture evaporation from the processed material accumulated in the processing tank 10d is promoted, so that it can be further dried.
Therefore, when the processed product accumulated in the processing tank 10d is taken out from the discharge port 35, the processed product is dried as described above, so that the disposal process is facilitated and the discharged processed product is dried. Odor is not an issue when disposing of processed materials.

Further, in the present embodiment, a circulation duct 32 constituting a gas circulation passage in the treatment tank 10 is provided outside the exhaust duct 26 a provided in the treatment tank 10, and is disposed on the input port 22 side. The opening of the gas suction port 33 in the circulation duct 32 is directed upward.
With the above configuration, it is possible to prevent the processed material from entering the gas suction port 33 when the base material 12 and the introduced waste are mixed and stirred.

It is a schematic perspective view which shows the structure of the waste disposal apparatus in embodiment of this invention. It is a schematic sectional drawing of the waste disposal apparatus seen from A view of FIG. It is a schematic diagram which shows the ventilation path when the waste disposal apparatus in embodiment of this invention is seen from the upper surface. It is a schematic perspective view at the time of mounting | wearing with the exterior cover of the waste disposal apparatus in embodiment of this invention. It is a schematic diagram which shows the position of the deodorizing part and exhaust fan of the waste disposal apparatus in embodiment of this invention. It is a figure which shows the piping structure of the waste disposal apparatus in embodiment of this invention, (a)-(d) is a schematic diagram which shows the various modifications of the piping structure. It is a figure which shows the temperature / humidity in the processing tank of the waste disposal apparatus in embodiment of this invention.

Explanation of symbols

1: Drive motor 2: Small sprocket 3: Chain 4: Large sprocket 5: Agitation blade 6: Agitation shaft 7: Bearing 8 supporting the agitation shaft: Exterior part (frame)
9: Surface heater (overheating means)
10, 10b, 10c, 10d: processing tank 11: partition plate 12: base material 13: base material state measurement sensor 14: right side plate (side wall) of processing tank
15: Left side plate (side wall) of treatment tank
16: Exhaust fan 17: Intake port 18: Exhaust port 19: Magnet 20 attached to the input lid: Input lid open / close detection sensor 21: Input lid 22: Input port 23: Control unit 24: Vent 25: Dust removal filters 26, 26a , 26b, 26c: Exhaust duct (pipe)
27: Deodorization part (deodorization means)
27a: catalyst heater 27b: oxidation catalyst 28: temperature sensor 29: outside air intake 30: bottom plate 31: ventilation fan 32: circulation duct 33: gas suction port 34: circulation fan 35: discharge port

Claims (7)

A treatment tank that decomposes waste using the power of microorganisms, and exhausts the odor generated in the treatment tank when the treatment tank is heated and decomposed, and then deodorized and released outside the treatment tank. In a waste treatment apparatus having heating deodorizing means,
An exhaust duct disposed in the treatment tank and guiding the exhaust from the heating and deodorizing means to the outside of the treatment tank;
A circulation duct provided outside the exhaust duct, and having a gas circulation passage in the treatment tank,
A waste treatment apparatus configured to be able to exchange heat between a high-temperature exhaust in the exhaust duct and a gas in a treatment tank that circulates in the circulation duct.   The waste treatment according to claim 1, wherein an exhaust duct disposed in the treatment tank is disposed in the vicinity of the heating and deodorizing means, and allows high-temperature exhaust from the heating and deodorizing means to be vented. apparatus.   An exhaust duct disposed in the treatment tank is connected to an exhaust duct outside the tank disposed near the side wall of the treatment tank, and heat from the exhaust duct outside the tank is transferred from the sidewall of the treatment tank. The waste disposal apparatus according to claim 1 or 2, wherein   The said processing tank is divided into the inside of this processing tank into a plurality by the partition plate, and overflows the waste in this processing tank from the upstream section to the downstream section. The waste disposal apparatus according to any one of claims.   The circulation duct has a gas suction port formed in one end of the circulation duct and a circulation fan provided at the other end, and the circulation fan circulates the gas in the treatment tank by the circulation fan. The waste disposal apparatus according to any one of claims 1 to 4, wherein the waste disposal apparatus is circulated through the wastewater.   The treatment tank has an input port for introducing the waste and an exhaust port for discharging the decomposed residue, and a gas suction port in the treatment tank at one end of the circulation duct is formed on the input side. 6. The waste treatment apparatus according to claim 5, wherein a circulation fan at the other end of the circulation duct is provided on the discharge port side.   The waste treatment apparatus according to claim 6, wherein the suction port provided on the input port side opens upward.

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