JP2005218926A - Waste treatment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waste treatment apparatus not made large-sized, having a simple constitution, capable of being suppressed in its running cost and capable of preventing the diffusion of a malodor, which rises from a charging port at the time of charging of waste such as garbage or the like, to the periphery. <P>SOLUTION: The waste treatment apparatus is equipped with the charging port 21 for charging waste in a treatment tank and has a lid 20 for opening and closing the charging port 21 and the shutter, which has a plurality of on-off shutter plates 31 to cover the charging port 21, provided between the charging port 21 and the lid 20. The shutter plates 31 are opened and closed by the presence or the absence of the load on the shutter plates 31 to prevent the malodor, which rises from the charging port 21 at the time of charging of waste, from being diffused to the periphery. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a waste treatment apparatus capable of preventing odors rising from an input port when garbage is thrown in from spreading around the waste treatment apparatus.

  2. Description of the Related Art In recent years, waste treatment apparatuses using the power of microorganisms are known as waste treatment means such as garbage. This waste treatment device is filled with a substrate containing microorganisms in order to decompose the waste in the treatment tank, and the waste is introduced into the treatment tank from the inlet provided in the treatment tank by opening the input lid. However, the waste is decomposed by the action of microorganisms that live in the base material.

According to this, the waste is converted into moisture (water vapor) and carbon dioxide gas by the above-described decomposition of the microorganisms, and is discharged as exhaust gas by the exhaust device to the outside of the waste treatment device. In the exhaust gas, Along with water vapor and carbon dioxide, it contains the odor of the waste that has been thrown in and the odor that comes from the microbial decomposition of the waste. When new waste such as garbage is input, there is a problem that the odor from the input port is diffused and the surrounding environment is deteriorated.
Therefore, for example, there is a waste treatment apparatus in which a fan that blows air for forming an air curtain is provided above the garbage inlet as in Patent Document 1 and odor diffusion is prevented by the air curtain. Proposed.
JP 2002-320946 A

  However, in the thing of patent document 1 in the said prior art example, said waste disposal apparatus needs to provide the fan which ventilates the air for forming an air curtain above the garbage input port as mentioned above. Therefore, the strength of the air flow of the fan to be blown and the mechanical structure for forming the air flow are complicated, and a space for providing the air flow forming part of the air curtain is also required, which increases the cost of the waste treatment apparatus and increases the cost. There were problems such as an increase in running costs due to power supply to the fans. In addition, the waste treatment apparatus is not limited to the treatment apparatus as described above, and is configured as a storage tank that can store waste. For example, waste such as empty cans and empty bottles, pruned branches of garden trees, and cut grass So far, there has been no simple configuration that can prevent odors from stored waste from spreading around the storage tank when used as a temporary storage location. It was.

  Therefore, the present invention solves the above-mentioned problems, does not increase the size, and can reduce the running cost with a simple configuration, and the odor that rises from the input port when waste such as garbage is input diffuses to the surroundings. It is an object of the present invention to provide a waste treatment apparatus that can prevent the above-described problem.

The present invention provides a waste disposal apparatus configured as follows.
That is, the waste treatment apparatus of the present invention is a waste treatment apparatus having an input port for introducing waste into a treatment tank, and is provided between a lid for opening and closing the input port, and between the input port and the lid. And an openable and closable shutter that covers the insertion port.
Further, the waste treatment apparatus of the present invention is a treatment tank in which the treatment tank contains waste introduced from the inlet and decomposes using a base material containing treatment organisms, and the inside of the treatment tank The waste material is treated by mixing and stirring the waste material stored in the container and the base material containing the treated organism by mixing and stirring means.
In the waste treatment apparatus of the present invention, the shutter may be composed of a plurality of shutter plates, and the shutter plates may be opened and closed depending on the presence or absence of a load on the shutter plate.
In the waste treatment apparatus of the present invention, the shutter plate includes a rotating shaft having a restoring spring provided at one end of the shutter plate, and the waste plate on the shutter plate thrown in from the insertion port is disposed. It opens toward the inside of the processing tank with its rotating shaft as a fulcrum by its own weight, and the load on the shutter plate disappears due to the storage of waste in the processing tank, so that it closes by the action of the restoring spring. Can be configured.
In the waste disposal apparatus of the present invention, the shutter plate includes a rotation shaft having a weight provided at the center of the shutter plate, and the weight of the waste on the shutter plate thrown in from the insertion port. The rotating shaft is used as a fulcrum to open toward the inside of the processing tank, and the load on the shutter plate disappears due to the waste contained in the processing tank, so that it is closed by the action of the weight. be able to.
The waste treatment apparatus of the present invention can adopt a configuration in which the shutter plate is divided into lengths that do not interfere with the mixing / stirring means when the shutter plate is opened.
In the waste treatment apparatus of the present invention, the shutter plate may be formed of antibacterial resin or antibacterial stainless steel.
Further, the waste disposal apparatus of the present invention can be configured such that the shutter plate does not rotate by engaging the rotation shaft of the shutter plate adjacent to the front end portion of the shutter plate.
In the waste disposal apparatus of the present invention, the shutter includes a shutter portion having a plurality of shutter plates, and the shutter portion can be detachably attached to the insertion port. In that case, the shutter part can be constituted by a shutter frame and a plurality of shutter plates supported on the shutter frame by a rotation shaft.

  According to the present invention, the running cost can be suppressed with a simple configuration without increasing the size, and it is possible to prevent the odor rising from the input port when the waste such as garbage is input from diffusing to the surroundings. A possible waste treatment apparatus can be realized.

Below, the waste disposal apparatus which has a shutter which prevents the spreading | diffusion of the odor in embodiment of this invention is demonstrated.
FIG. 1 is a perspective view of the waste treatment apparatus according to the embodiment of the present invention when the exterior portion is mounted, and FIG. 2 is a perspective view showing the configuration of the waste treatment apparatus according to the embodiment of the present invention. 3 is a cross-sectional view of the waste treatment apparatus as seen from the view A in FIG. 2, and FIG. 4 is a view of the waste treatment apparatus as seen from the view B in FIG.
2 and 3, 1 is a drive motor of the 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, 4 is a large sprocket that meshes with the chain 3, 5 Is a stirring blade as a stirring member 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.
Reference numeral 8 denotes an exterior part (frame body) as a frame that covers the waste treatment apparatus, 9 denotes a planar heater, and 10 denotes a treatment tank provided in the exterior part 8 for processing waste. This processing tank 10 includes a processing tank side plate right 13 and a processing tank side plate left 14 as a pair of side walls provided opposite to each other, and a tank portion 12 provided horizontally between the pair of side walls. Is done. A planar heater 9 as a heating means for heating the treatment tank 10 is provided in a tank portion 12 below the treatment tank 10. Furthermore, 11 is a base material for decomposing waste.

Further, 15 is an exhaust fan for supplying oxygen to microorganisms and aeration of moisture and carbon dioxide generated by decomposition treatment, 16 is an intake port for taking outside air into the treatment tank 10, and 17 is carbon dioxide generated in the treatment tank 10. An exhaust port for exhausting gas and the like.
Further, 22 is a control unit for controlling the whole, 23 is a vent, 24 is a dust removing filter for removing dust generated from the inside of the processing tank 10, and 25 (25a, 25b, 25c) are exhaust ports and outside air in the processing tank 10. A communicating exhaust duct, 26 is a deodorizing unit as a deodorizing means for heating the odorous air generated from the treatment tank 10 by the catalyst heater 26a and deodorizing using the oxidation catalyst 26b, and 27 is an outlet temperature of the deodorizing unit 26. It is a temperature sensor to detect.
In addition, 28 is an outside air intake as an outside air intake provided at the upper part of the exterior portion 8, 30 is a ventilation fan that forcibly creates a flow of outside air taken in from the outside air intake, and 29 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.

  In FIG. 1, 18 is a magnet attached to the loading lid 20 of the processing tank 10, 19 is a loading lid detection sensor for detecting the magnet attached to the loading lid 20 and detecting opening and closing of the loading lid, 20 is a loading lid, Reference numeral 21 denotes an input port for inputting waste, and reference numeral 31 denotes a shutter plate constituted by a plurality of sheets so as to cover the input port 21.

Next, the operation and operation of the waste disposal apparatus configured as described above will be described.
The treatment tank 10 has a stirring shaft 6 in the center, and a base material 11 containing treatment organisms is contained therein.
The base material 11 is mainly composed of sawdust, which is hard to biodegrade, 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 11 in the processing tank 10 is a buckwheat husk other than sawdust, rice bran, etc., since it can maintain a space | gap and can supply oxygen to a processing organism, it is suitable as the base material 11. .
Or even if it uses the base material 11 which used the processed material which processed only the garbage with the waste processing apparatus as a seed | species base material, since the treatment organism has already lived or slept in the active state, the base material 11 It is suitable as.

In the present embodiment, when the loading lid 20 of the waste treatment apparatus in operation is opened, the loading lid open / close detection sensor 19 that has detected the magnet 18 of the loading lid 20 determines that the loading lid 20 has been opened. In the stirring state, the drive motor 1 is configured to stop.
Here, the charging lid open / close detection means including the magnet 18 attached to the charging lid 20 and the charging lid open / close detection sensor 19 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.
In addition, the closing lid opening / closing detection sensor 19 uses a non-contact magnetic detection sensor in the present embodiment, but may be a mechanical micro switch.
Further, the loading lid opening / closing detection sensor 19 can be attached by attaching a detection sensor to the loading lid 20 side, the processing tank 10 side, or either the loading lid 20 or the processing tank 10 and a detection member to the other. is there.

Next, the stirring operation after throwing in the waste will be described.
The agitation operation by the drive motor 1 after the waste is charged is normally agitated only for 5 minutes during a period of 30 minutes, for example. Immediately after the waste is charged, the agitation is started immediately, for example, a period of 30 minutes. By stirring for 10 minutes during this period, the thrown-in waste can be finely crushed and mixed with the substrate 11 evenly.
Furthermore, in addition to the effect of mixing the base material 11 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, there is also an effect of adjusting the moisture content of the mixture.
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.

In the present embodiment, the stirring blade 5 has a triangular cross section and is configured to be attached to the stirring shaft 6 at a plurality of equal intervals. However, the stirring blade 6 has a flat stirring blade 5. It is possible to attach a plurality at equal intervals. In addition, a plurality of bar-shaped stirring bars may be attached to the stirring shaft 6 at equal intervals.
Here, as shown in FIGS. 2 and 3, the cross-sectional shape of the treatment tank 10 is substantially U-shaped having a substantially semicircular arc portion or more as shown in FIGS. 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 equal intervals.

In addition, in the form of a present Example, although the stirring axis | shaft 6 was horizontally installed in the processing tank 10, the stirring axis 6 may be provided in the processing tank 10 in the perpendicular direction.
At this time, since stirring causes moisture and carbon dioxide gas to be generated more than when stirring is stopped, the ventilation flow rate of the exhaust fan 15 is increased, and at the same time as oxygen is supplied from the intake port 16, By discharging the gas to the outside of the treatment tank 10, it is possible to prevent the mixture in the treatment tank 10 from becoming damp and to have an effect of adjusting the moisture content of the mixture.
In this embodiment, the exhaust fan 15 is attached to the exhaust duct 25 in the exhaust duct 25 after passing through the deodorizing portion 26 communicating with the exhaust outlet 17. Even if the exhaust fan 15 is attached, the same effect can be obtained.

Further, the exhaust fan 15 attached to the intake port 16 may be a hot air fan capable of sending air heated from about 40 ° C. to about 70 ° C. into the treatment tank 10. By attaching a hot air fan to the intake port 16, the temperature of the gas in the processing 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 16 is effective as a means for adjusting the moisture content of the mixture when the mixture becomes humid.
Further, the same effect as described above can be obtained by providing the exhaust fan 15 in the exhaust duct 25 communicating with the exhaust port 17 and providing the hot air fan in the intake port 16.

Thus, the thrown-in waste and the base material 11 are mixed evenly, and the decomposition process starts.
Furthermore, it is also possible to control the stirring operation time according to the result measured by the substrate state measuring sensor (not shown). 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 a stirring time, the base material 11 can be prevented from being crushed due to excessive stirring, and the life of the base material 11 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. When the inside of the treatment tank 10 becomes humid, anaerobic bacteria grow, generate hydrogen sulfide and the like, and the odor state becomes a bad odor. Therefore, the water content of the base material 11 and the waste is 20% to 60%. It is desirable to adjust within the range.

In addition, when the water content increases, the torque required for stirring increases, and the motive power becomes unreasonable. When the base material 11 is pulverized, if it contains water, it tends to be clayy. When the base material 11 becomes clay-like, the decomposition efficiency becomes extremely low. In such a case, the whole amount or half or more of the base material 11 needs to be replaced.
In addition, the substrate state measurement sensor as the substrate state measurement means at this time directly contacts the substrate 11 in the treatment 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 materials 11 and measures the moisture content of the substrate 11, a heat capacity method that combines a heater and a thermistor may be used.

  In addition, since the mixture of the base material 11 and the waste changes to weak alkalinity or weak acid depending on the type of waste to be input, the material constituting the electrode in direct contact with the mixture in the resistance method is acid resistant, It is recommended to use a stainless steel material having excellent alkalinity. In this embodiment, stainless steel screws that are versatile and inexpensive are used as electrodes.

Next, when the waste input is interrupted or the input amount decreases, the base material 11 may be dried too much by stirring or the like. In this case, the microorganisms in the base material 11 are not only activated slowly due to drying and the processing efficiency is lowered, but also have a drawback that the base material 11 is scattered when it is pulverized, and the surroundings are soiled. 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 drawback can be compensated by preventing the fine powder from being discharged to the outside by the dust filter 24 provided at the exhaust port 17.
Further, the dust removal filter 24 is mechanically engaged with the exhaust port 17 or fixed with a thumbscrew or a snap lock so that it can be manually removed without using an instrument. By removing the dust filter 24, the fine powder of the base material attached to the dust filter 24 can be easily cleaned.
The odorous air generated from the treatment tank 10 is heated by the catalyst heater in the deodorization unit 26, deodorized using the oxidation catalyst, and exhausted to the outside of the processor through the exhaust duct 25.

In the waste treatment apparatus as described above, the shutter of the inlet port, which is a characteristic configuration, will be described.
In this embodiment, as shown in FIG. 1 or FIG. 4, a configuration is provided that includes a plurality of shutter plates 31 that rotate around a rotation shaft 32 as a fulcrum so as to cover the garbage inlet 21.
The plurality of shutter plates 31 prevents the odor from diffusing around the waste disposal apparatus by covering the inlet 21 when the inlet lid 20 is opened and covering the inlet 21. can do.
In the present embodiment, the garbage is expelled from the container that has been transported onto the shutter plate 31, so that the shutter plate 31 opens toward the inside of the processing tank 10 due to its own weight, and the shutter plate 31 is over the shutter plate 31. After the garbage is dropped into the treatment tank, the loading of the garbage is completed and the shutter plate 31 is automatically restored to the horizontal position by the action of a weight or a spring after the garbage is no longer loaded. Configured to close. Specifically, as shown in FIG. 5, when the shutter plate 31 opens and becomes vertical, the tip of the rotating stirring blade 5 is the number of divisions of the shutter plate 31 that can be configured with a gap a. By doing so, interference with the stirring blade 5 can be prevented. The number of divisions of the shutter plate 31 can be uniquely determined by the size of the inlet 21, the distance from the tip of the stirring blade 5 to the inlet 21, and the gap a.
In the present embodiment, it is assumed that the processing object is scraped up at the tip of the stirring blade 5, and the interval a is set to 20 mm. When the distance between the tip of the stirring blade 5 and the inlet 21 is 107 mm, the dimension of the shutter plate 31 is 87 mm or less. Therefore, when the slot 21 is 350 mm, the shutter plate 31 is preferably composed of a plurality of four sheets.

  Further, in the present embodiment, as shown in FIG. 6, the shutter plate 31 after the garbage is dropped is removed by the weight 33 attached to the rotating shaft 32 of the shutter plate 31 because the garbage load is eliminated. The shutter plate 31 can be configured to be restored to the horizontal position and act in the direction of closing the insertion port 21, and as shown in FIG. 7, by a spring 34 attached to the rotating shaft 32 of the shutter plate 31. The shutter plate 31 can be restored to the horizontal position and act in the direction of closing the insertion port 21. As a result, the shutter plate 31 attached to the insertion port 21 is opened by the dead weight of the garbage, and is automatically restored and closed by the action of the weight 33 or the spring 34 when the garbage load is eliminated. The user-friendliness is improved. Further, the input port 21 is opened only for a short time until the garbage falls, and a plurality of shutter plates 31 are provided, and only the minimum shutter plate 31 that receives the load of the garbage is opened. Odor from the inside of the treatment tank 10 rising from the mouth 21 can be prevented. As described above, according to the present embodiment, it is possible to efficiently prevent odor diffusion around the waste disposal apparatus with a simple configuration in which the plurality of shutter plates 31 are attached to the inlet 21.

Examples of the present invention will be described below.
[Example 1]
FIG. 8 is a diagram illustrating a configuration example in which the rotation shaft 32 is provided on one side of the shutter plate 31 according to the first embodiment of the present invention.
As shown in FIG. 7, a spring 34 is attached to the rotation shaft 32, so that when garbage is dropped into the treatment tank 10, the load of the garbage is lost, and the shutter plate 31 is moved horizontally by the action of the spring 34. It is configured to restore to the position and close automatically.
In addition, when the shutter plate 31 is closed by the action of the spring 34, the rotation shaft 32 of the shutter plate 31 prevents the adjacent shutter plate 31 from rotating in order to stop the shutter plate 31 in a substantially horizontal position and not to open a gap. It is comprised so that it may act.

[Example 2]
FIG. 9 is a diagram showing a configuration example different from the first embodiment in which the rotation shaft 32 is provided on one side of the shutter plate 31 in the second embodiment of the present invention.
As shown in FIG. 7, a spring 34 is attached to the rotation shaft 32, so that when garbage is dropped into the treatment tank 10, the load of the garbage is lost, and the shutter plate 31 is moved horizontally by the action of the spring 34. It is configured to restore to the position and close automatically.
In the present embodiment, the shutter plate 31 is rotated by engaging with the rotary shaft 32 in order to stop the shutter plate 31 in a substantially horizontal position when the shutter plate 31 is closed and to prevent the gap from being opened. The stopper 35 is provided.

[Example 3]
FIG. 10 is a diagram illustrating a configuration example in which the rotation shaft 32 is provided at the center of the shutter plate 31 according to the third embodiment of the present invention.
As shown in FIG. 6, the weight 33 is attached to the rotating shaft 32, and when the garbage falls into the treatment tank 10, the load of the garbage is lost. It is configured to restore to a horizontal position and automatically close.
In this embodiment, the shutter plate 31 is made of antibacterial resin or antibacterial stainless steel so that the garbage attached to the shutter plate 31 can be prevented from decaying. . This makes it possible to further improve the clean feeling.

[Example 4]
FIG. 11 is a diagram illustrating a configuration example of the shutter unit 40 in which a plurality of shutter plates 31 according to the fourth embodiment of the present invention are provided on the shutter frame body 41. The shutter unit 40 detachable from the insertion port 21 is provided with a plurality of shutter plates 31 supported by a rotating shaft on a shutter frame 41 to enable an opening / closing operation. With this configuration, it is possible to achieve the same function as when the shutter plate 31 is provided at the insertion port 21.
Moreover, since the shutter part 40 can be attached or detached from the insertion port 21, the maintenance work etc. of the base material 11 in the processing tank 10, the dust removal filter 24, etc. become easy.

It is a perspective view at the time of the exterior part mounting | wearing of the waste disposal apparatus in embodiment of this invention. It is a perspective view which shows the structure of the waste disposal apparatus in embodiment of this invention. It is sectional drawing of the waste disposal apparatus seen from A view of FIG. It is a figure of the waste disposal apparatus seen from B view of FIG. It is a figure which shows the relationship between the shutter and stirring blade of the waste disposal apparatus in embodiment of this invention. It is an attachment figure of the weight of the shutter of the waste disposal apparatus in the embodiment of the present invention. It is an attachment figure of the spring of the shutter of the waste disposal apparatus in the embodiment of the present invention. It is a figure which shows the structure of the shutter of the waste disposal apparatus in Example 1 of this invention. It is a figure which shows the structure of the shutter of the waste disposal apparatus in Example 2 of this invention. It is a figure which shows the structure of the shutter of the waste disposal apparatus in Example 3 of this invention. It is a figure which shows the structure of the shutter of the waste disposal apparatus in Example 4 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: Planar heater (overheating means)
10: Processing tank 11: Base material 12: Tank section 13: Processing tank side plate right (side wall)
14: Processing tank side plate left (side wall)
15: Exhaust fan 16: Intake port 17: Exhaust port 18: Magnet attached to the input lid 19: Input lid open / close detection sensor 20: Input lid 21: Input port 22: Control unit 23: Vent 24: Dust removal filters 25, 25a , 25b, 25c: Exhaust duct (pipe)
26: Deodorizing part (deodorizing means)
26a: catalyst heater 26b: catalyst 27: temperature sensor 28: outside air intake port 29: bottom plate 30: ventilation fan 31: shutter plate 32: rotating shaft 33: weight 34: spring 35: rotation stopper 40: shutter unit 41: shutter frame Body a: gap

Claims (10)

A waste treatment apparatus having an inlet for introducing waste into a treatment tank,
A lid for opening and closing the inlet;
A waste treatment apparatus comprising an openable / closable shutter between the input port and the lid and covering the input port.   The processing tank is a processing tank that contains waste input from the inlet and decomposes using a substrate containing processing organisms, and includes waste and processing organisms stored in the processing tank. The waste processing apparatus according to claim 1, wherein the waste is processed by mixing and stirring the base material with a mixing and stirring means.   The waste disposal apparatus according to claim 1 or 2, wherein the shutter includes a plurality of shutter plates, and the shutter plate opens and closes depending on the presence or absence of a load on the shutter plates. .   The shutter plate includes a rotation shaft having a restoring spring provided at one end of the shutter plate, and the processing is performed using the rotation shaft as a fulcrum by the weight of waste on the shutter plate introduced from the insertion port. The structure is configured to open toward the inside of the tank, and to close by the action of the restoring spring when the load on the shutter plate disappears due to the waste contained in the processing tank. 3. The waste treatment apparatus according to 3.   The shutter plate includes a rotating shaft having a weight provided at the center of the shutter plate, and the processing tank is configured with the rotating shaft as a fulcrum by the weight of waste on the shutter plate charged from the charging port. 4, wherein the load on the shutter plate disappears due to the waste contained in the treatment tank, and is closed by the action of the weight. The waste disposal apparatus described.   6. The waste treatment apparatus according to claim 3, wherein the shutter plate is divided into lengths that do not interfere with the mixing / stirring means when the shutter plate is opened.   The waste disposal apparatus according to any one of claims 3 to 6, wherein the shutter plate is made of antibacterial resin or antibacterial stainless steel.   8. The shutter plate according to claim 4, wherein the shutter plate is configured so that a front end portion of the shutter plate does not rotate by engaging with a rotation shaft of an adjacent shutter plate. 9. Waste disposal equipment.   The said shutter consists of a shutter part which has a some shutter plate, This shutter part is equipped with the structure which can be attached to the said insertion port so that attachment or detachment is possible. Waste disposal equipment.   The waste disposal apparatus according to claim 9, wherein the shutter unit includes a shutter frame and a plurality of shutter plates supported on the shutter frame by a rotation shaft.

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