Dry heat volume reduction treatment device

Abstract

To provide a dry heat volume reduction treatment device capable of lowering a temperature upon extracting residue, to an extent of not causing a problem in workability, while shortening a cooling time.SOLUTION: A dry heat volume reduction treatment device comprises: dry heat means 16 disposed in a housing, for carrying out a volume reduction step of dry-heating waste to release moisture to dry and reduce the volume thereof; communication means 74 connected to the dry heat means 16, for extracting steam / moisture released from the waste to outside of the dry heat means 16; deodorizing means 26 disposed above the dry heat means 16 in the housing and connected to an outlet of the communication means 74, for burning / heating the steam / moisture extracted from the outlet of the communication means 74, to carry out a deodorization step of removing odor components contained in the steam / moisture; and control means for starting the deodorization step concurrent with the start-up of the device and allowing the deodorization step to continue until just before the device is stopped, and carrying out a cooling step of cooling the dry heat means 16 immediately after completion of a volume reduction process of the waste, i.e., after the finishing the volume reduction step.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] This invention relates to a dry heat volume reduction treatment device for reducing the volume of waste containing moisture by externally dry-heat treating the waste and evaporating the moisture inside the waste, and in particular to a dry heat sterilization volume reduction treatment device that can sterilize infectious waste to make it non-infectious by matching the dry heat conditions with the sterilization conditions. [Background technology]

[0002] Traditionally, incineration has been the standard method of final waste disposal, but incineration presents several challenges. First, as is true for all waste, incineration generates a large amount of exhaust, including smoke, sparks, dust, and soot. This not only pollutes the surrounding area, but also requires tall chimneys to vent these emissions and emits carbon dioxide (CO2), an environmentally harmful substance. Furthermore, the processing of food waste, particularly food waste with a high moisture content, requires drying before incineration because the high moisture content makes it difficult to burn. This not only increases fuel costs but also increases processing time. Furthermore, the processing of oily waste, such as waste oil and synthetic resin, generates high heat and is prone to generating black smoke and damaging the incinerator. Therefore, measures such as water spraying and quantitative feeding of waste into the incinerator are required. This not only increases manufacturing costs due to the incinerator's materials and structure, but also increases the size of the equipment.

[0003] As described above, conventional methods of treating organic waste by incineration have had various problems, such as polluting the surrounding area, emitting CO2, requiring a tall exhaust pipe, high fuel costs, long processing times, high manufacturing costs, and large equipment sizes.

[0004] The present applicant filed patent application No. 2003-203466, followed by patent application No. 2003-203466, all of which have been granted patents. The common technical concept of these inventions is that a combustion chamber (treatment chamber) containing waste is indirectly heated (dry-heated) from the outside using a heating means such as a combustion burner, thereby steaming the waste and forcibly evaporating its moisture. During this process, gas (moisture containing odor) is generated. This gas rises and flows into the deodorizing chamber via an exhaust pipe connected to the combustion chamber. Meanwhile, exhaust gas generated by the heating means rises and flows into the deodorizing chamber from the heating chamber, surrounding the combustion chamber, via an exhaust pipe. In this way, both gases are combusted in the deodorizing chamber using the heat of the combustion means, resulting in deodorization. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 2707210 Publication

[0006] [Patent Document 2] Patent No. 2745213 Publication

[0007] [Patent Document 3] Patent No. 4725985 Publication Summary of the Invention [Problem to be solved by the invention]

[0008] In the prior art described above, the volume reduction process of waste requires heating the waste using dry heat treatment from the outside, and cooling the waste residue that has been reduced in volume during this heating process.Once the cooling process is completed, the sufficiently cooled waste residue is removed, completing the entire process.

[0009] Here, shortening the processing time required to complete the entire process is essential for reducing fuel consumption and CO2 emissions. However, a certain amount of time is necessary for the heating process to achieve the desired volume reduction of the waste. Unnecessarily shortening this time can result in insufficient volume reduction. Therefore, shortening the cooling time in the cooling process is an urgent issue in order to shorten the processing time. However, unnecessarily shortening the cooling time can lead to problems with workability, such as the possibility of workers being burned when removing the reduced volume residue from the steaming chamber (processing chamber). However, there has been strong demand from users for shortening the processing time, and there has been a strong demand for achieving this while maintaining a high residue temperature to avoid workability problems.

[0010] This invention is an improvement of the invention related to the above-mentioned registered patent, and aims to provide a dry heat volume reduction treatment device that can shorten the cooling time while lowering the temperature at the time of removing the residue to a level that does not cause problems in workability. [Means for solving the problem]

[0011] In order to solve the above-mentioned problems and achieve the object, according to claim 1, a dry heat volume reduction treatment apparatus according to the present invention comprises a housing for the apparatus; dry heat means installed within the housing for performing a volume reduction process of dry-heating waste to release moisture from the waste and drying and reducing the volume of the waste; communication means connected to the dry heat means for extracting steam / moisture released from the waste to the outside of the dry heat means; and a communication means installed within the housing above the dry heat means for connecting to an outlet of the communication means for combusting / heating the steam / moisture extracted from the outlet of the communication means and for reducing the steam / moisture. the deodorizing means for carrying out a deodorizing process to remove odorous components contained in the dry heat means; a control means for starting the deodorizing process when the device is started and continuing the deodorizing process until just before the device is stopped, and for carrying out a cooling process to cool the dry heat means after the volume reduction process has been completed and the waste volume reduction process has ended; a cooling blower for introducing outside air into the dry heat means to cool it when the cooling process starts; and exhaust means for enabling a portion of the cooled air from the cooling blower to be exhausted outside the dry heat means prior to the start of the cooling blower.

[0012] According to the dry heat volume reduction treatment device described in claim 1, which is configured as described above, in the cooling process which follows the completion of the volume reduction process and involves cooling the dry heat means, when this cooling process begins, the cooling blower can be started to supply outside air to the dry heat means to cool it, and the cooled air used in the dry heat means can be exhausted outside the housing via the exhaust means, so that the cooled air from the dry heat means is prevented from being directly brought to the deodorizing means and is controlled to prevent the deodorizing effect due to the temperature drop in the deodorizing means from being impaired.Therefore, even if the cooling process begins, the deodorizing process in the deodorizing means can be performed without being hindered in any way, and the deodorizing effect can be achieved well, while the cooling time in the cooling process can be shortened, thereby achieving the effect of shortening the processing time.

[0013] According to claim 2, the dry heat volume reduction treatment device of this invention is characterized in that the dry heat means comprises an inner tube in which the waste is stored, an outer tube arranged on the outer periphery of the inner tube, the space between the inner tube defining a heating chamber for heating the inner tube from the outside, an outer tube forming a double cylindrical structure with the inner tube, and a heating burner for heating the heating chamber.

[0014] According to the dry heat volume reduction treatment device described in claim 2, which is configured as described above, the dry heat means has a double cylindrical structure consisting of an inner tube and an outer tube, so that the inside of the inner tube functions as a dry heat chamber for reducing the volume of waste, and by heating the outer heating chamber with a heating burner, the dry heat chamber is indirectly heated from the outside, making it possible to reliably reduce the volume of waste stored in the dry heat chamber.

[0015] Furthermore, according to claim 3, the dry heat volume reduction treatment device of this invention is characterized in that the communication means is configured to include a first communication passage whose inlet is connected to the inner tube and sends steam / moisture generated in the inner tube to the deodorizing means via an outlet, and a second communication passage whose inlet is connected to the outer tube and sends exhaust gas from the heating burner generated in the heating chamber to the deodorizing means via an outlet.

[0016] According to the dry heat volume reduction treatment device described in claim 3, which is configured as described above, the connecting means is composed of a first connecting passage connecting to the inner cylinder and a second connecting passage connecting to the outer cylinder, so that moisture / steam containing odorous components generated in the inner cylinder by the volume reduction process is reliably brought to the deodorizing means via the first connecting passage, and exhaust gas generated by combustion of the heating burner in the heating chamber between the inner cylinder and the outer cylinder is reliably brought to the deodorizing chamber via the second connecting passage, thereby reliably achieving the deodorizing effect.

[0017] Furthermore, according to claim 4, the dry heat volume reduction treatment device of the present invention is characterized in that the second communicating passage is arranged on the outer periphery of the first communicating passage in a double cylindrical structure.

[0018] According to the dry heat volume reduction treatment device described in claim 4, which is configured as described above, the first and second communicating passages are arranged to have a double cylindrical structure, thereby achieving the effect of making the device more compact.

[0019] Furthermore, according to claim 5, the dry heat volume reduction treatment device of the present invention is characterized in that the exhaust means comprises two exhaust ducts whose inlets are connected to the heating chamber and whose outlets open within the housing, and exhaust valves that are attached to the outlets of each exhaust duct in an openable and closable manner, and that, when open, allow the air in the heating chamber to be released into the housing, and, when closed, do not release the air from the heating chamber.

[0020] According to the dry heat volume reduction treatment apparatus described in claim 5, which is configured as described above, the exhaust means is configured with two exhaust ducts and exhaust valves attached to each outlet, so that when the cooling process begins, all of the cooling air introduced into the heating chamber is brought to the deodorizing means, and without causing a drop in temperature, a portion of it is reliably exhausted to the outside, thereby preventing a decrease in the deodorizing effect due to a drop in temperature of the deodorizing means, and also achieving the effect of reliably shortening the cooling time by activating the cooling blower.

[0021] Furthermore, according to claim 6, the dry heat volume reduction treatment device of the present invention is characterized in that the housing is equipped with a ventilation device for ventilating the air inside the housing to the outside.

[0022] According to the dry heat volume reduction treatment device described in claim 6, which is configured as described above, by exhausting the ventilation device, the heat emitted from the dry heat means arranged inside the housing can be ventilated to the outside of the housing, effectively suppressing the rise in internal temperature, and when the cooling process begins and the cooling air supplied to the dry heat means from the cooling blower is exhausted into the housing by the exhaust means, this exhaust air can be ventilated to the outside of the housing, thereby performing the function of maintaining a good environment inside the housing.

[0023] Furthermore, according to claim 7, the dry heat volume reduction treatment device of the present invention is characterized in that the control means keeps both exhaust valves in a closed state while the volume reduction process is being carried out, and controls one exhaust valve attached to one exhaust duct to operate from a closed state to an open state upon the start of the cooling process, and after a predetermined time has elapsed since the operation of this one exhaust valve, controls the other exhaust valve attached to the other exhaust duct to operate from a closed state to an open state.

[0024] According to the dry heat volume reduction treatment device described in claim 7, which is configured as described above, when the cooling process begins, the exhaust valves attached to the outlets of the two exhaust ducts, which had been kept closed until then, do not operate from the closed state to the open state simultaneously, but rather operate sequentially with a time lag.As a result, the current flowing during operation becomes the sound of electricity being passed through with a time lag, and the current load is kept low, thereby achieving the effect of allowing the cooling process to be carried out with a reduced load on the power supply.

[0025] Furthermore, according to claim 8, the dry heat volume reduction treatment device of the present invention is characterized in that the control means stops the deodorization process in the deodorization chamber when it is detected that the temperature of the heating chamber has dropped to a predetermined set value as a result of the cooling process being carried out, and controls the device to stop operation when a predetermined time has elapsed after the deodorization process is completed.

[0026] According to the dry heat volume reduction treatment device described in claim 8, which is configured as described above, the operation of the device is not stopped immediately after the cooling process is completed, but rather the device is stopped after a predetermined time has passed since the cooling process is completed.Therefore, the device is stopped after the temperature in the deodorizing chamber has dropped sufficiently, which has the effect of enabling the function of the deodorizing chamber to be maintained in good condition.

[0027] Furthermore, according to claim 9, the dry heat volume reduction treatment device of this invention is characterized in that the deodorizing means is provided with a deodorizing burner arranged to provide a combustion flame at a position where the outlet of the communicating means is connected and the steam / moisture is extracted, and the control means controls the deodorizing burner to continue operating while the volume reduction process and the cooling process are being carried out.

[0028] According to the dry heat volume reduction treatment apparatus described in claim 9, which is configured as described above, in the deodorizing means, a deodorizing burner is arranged so as to produce a combustion flame at the position where the outlet of the connecting means is connected and the steam / moisture is extracted, and the control means controls the deodorizing burner to continue operating while the volume reduction process and the cooling process are being carried out, so that throughout the entire operating period of the apparatus, the odorous components contained in the moisture / steam released from the waste are reliably incinerated and the effect of reliably preventing the odor from leaking to the outside is achieved. [Effects of the Invention]

[0029] As described above, according to the present invention, a dry heat volume reduction treatment apparatus is provided that can shorten the cooling time of the residue after volume reduction treatment while lowering the temperature at the time of removing the residue to a level that does not cause problems in workability. [Brief explanation of the drawings]

[0030] [Figure 1] 1 is a photograph showing the external configuration of a dry heat sterilization volume reduction treatment device as one embodiment of a dry heat volume reduction treatment device according to the present invention. FIG. [Figure 2] 1 is a perspective front view showing the internal structure of a dry heat sterilization volume reduction treatment apparatus as one embodiment of a dry heat volume reduction treatment apparatus according to the present invention.

[0023] FIG. [Figure 3] 1 is a right side view showing, in a perspective state, the internal structure of a dry heat sterilization volume reduction treatment apparatus as one embodiment of a dry heat volume reduction treatment apparatus according to the present invention. FIG. [Figure 4]1 is a perspective rear view showing the internal structure of a dry heat sterilization volume reduction treatment apparatus as one embodiment of the dry heat volume reduction treatment apparatus according to the present invention. FIG. [Figure 5] 1 is a left side view showing, in a perspective state, the internal structure of a dry heat sterilization volume reduction treatment apparatus as one embodiment of a dry heat volume reduction treatment apparatus according to the present invention. FIG. [Figure 6] FIG. 5 is a cross-sectional view illustrating the internal structure of the dry heat sterilization volume reduction apparatus shown in FIG. [Figure 7] FIG. 2 is a block diagram showing the configuration of a control system. DETAILED DESCRIPTION OF THE INVENTION

[0031] Hereinafter, an embodiment in which the dry heat volume reduction apparatus according to the present invention is applied to a dry heat sterilization volume reduction apparatus will be described in detail with reference to the accompanying drawings.

[0032] As shown in Figure 1, which shows the external configuration, and in Figures 2 to 5, which show the interior in a see-through state, the dry heat sterilization and volume reduction treatment device (hereinafter simply referred to as "the device") 10 of this embodiment is a device that sterilizes and reduces the volume of input waste, in this embodiment, infectious waste such as used disposable diapers and blood-stained gauze, by dry heat treatment. Regarding "sterilization," this is in accordance with the "Manual for the Treatment of Infectious Waste Based on the Waste Disposal Act" (published in May 2023) issued by the Ministry of the Environment, and is carried out in accordance with "(4) Sterilization using a dry heat sterilization device," one of the five treatment methods stipulated as sterilization treatment (treatment to eliminate infectiousness) in "4.6 Intermediate Treatment Within the Facility" in the manual. Regarding "volume reduction," the volume reduction rate is the comparison of the volume of the material before being put into the device with the volume of the residue after treatment, and although the figure varies depending on the type of waste (water content, etc.), a volume reduction rate of approximately 50% to 95% is achieved.

[0033] Furthermore, for users who use this dry heat sterilization volume reduction device to sterilize infectious waste, the primary concern is "sterilization," and they may not care about the degree of "volume reduction" as long as sterilization is achieved, in which case the device 10 essentially functions as a dry heat sterilization device. Also, when this device is used to treat general waste such as food scraps and food residue, these wastes are not infectious and do not require sterilization, and from the perspective of cost reduction, the primary concern for users is "volume reduction," i.e., the volume reduction rate, in which case the device 10 essentially functions as a dry heat volume reduction device.

[0034] This device 10 comprises a housing 12 firmly installed on the floor. The internal structure of the housing 12 will be explained later, but first, the external configuration of this device 10 will be explained. As shown in Figure 1, an open / close door 14 is provided in the center of the front of the housing 12 and can be opened to reveal a waste input door 22 (shown in Figure 5) that can be accessed from the outside and that openably covers an input port 20 through which waste is input into a dry heat chamber (sterilization chamber) 18 that constitutes the dry heat mechanism 16, which will be described later using Figures 2 to 5.

[0035] A ventilation fan 24 is attached to the top surface of the housing 12, i.e., on the top panel, on the right side as viewed from the front, as a ventilation means for ventilating the inside of the housing 12. As shown in Figures 1 to 5, the lower edge of the housing 12 is slightly offset upward from the floor, and this gap defines a space through which outside air is introduced into the housing 12. When the ventilation fan 24 is activated, outside air is introduced into the housing 12 through this gap, maintaining a good environment inside the housing 12 and cooling it to prevent it from overheating.

[0036] On the left side of the top plate of the housing 12 as viewed from the front, an exhaust tower 28 is attached for exhausting exhaust from the deodorizing mechanism 26, which will be described in detail later with reference to Figures 2 to 5, to the outside. This exhaust tower 28 covers an exhaust opening 32 that communicates with an exhaust port 30A of a deodorizing chamber 30 provided in the deodorizing mechanism 26, and serves to prevent rain from entering the deodorizing chamber 30 of the deodorizing mechanism 26 from here.

[0037] 2 and 3, a discharge door 36 is provided at the lower right side of the housing 12 to openably cover a discharge port 34 for removing residue as treated waste. This discharge port 34 is formed as an opening on the side of the dry heat chamber 18 of the dry heat mechanism 16 and is for removing residue as treated material that has been dry heat sterilized and volume-reduced to the outside. In addition, a deodorization door 40 is provided at the upper right side of the housing 12 to openably cover a deodorization burner 38 in the deodorization mechanism 26 for incinerating and deodorizing the exhaust gas and steam / moisture brought thereto from the dry heat mechanism 16. This deodorization door 40 is provided mainly for maintenance of the deodorization burner 38 and for checking its operating status.

[0038] Here, the deodorizing burner 38 is set so that its combustion flame is directed toward the deodorizing chamber 30, and is set so that the high-temperature combustion flame burns off and deodorizes the exhaust gas discharged from the dry heat mechanism 16 via the communication mechanism 74, which will be described later. Furthermore, the combustion flame of the deodorizing burner 38 keeps the temperature inside the deodorizing chamber 30 high, and the exhaust gas from the connecting mechanism 74 that has not been burned off by the deodorizing burner 38 is exposed to even higher temperatures while passing through the deodorizing chamber 30 and is brought to the exhaust port 30A in a state where it is brought into the deodorizing chamber 30, thereby promoting the deodorizing effect.

[0039] Furthermore, a grease pump 46 is disposed on the lower right side of the housing 12, in the upper left portion of the discharge door 36 in the drawing, for adding grease as a lubricant to a drive mechanism 44 that rotates and drives the agitation frame 42, which will also be described later. This grease pump 46 is provided on an operation panel 56 of a control mechanism 54, which will be described later, and is controlled under the control of the control mechanism 54 so that one shot of grease is supplied to the moving parts of the drive mechanism 44 (more specifically, bearing 93) each time an operation switch 124 that commands the start of operation of the device 10 is turned on.

[0040] 5, heating doors 52A, 52B are provided on the left side of the housing 12 to openably cover a pair of left and right heating burners 50A, 50B for heating a heating chamber 48 that indirectly heats the dry heat chamber 18 of the dry heat mechanism 16 from the periphery, as will be described later. These heating doors 52A, 52B are provided primarily for maintenance of the heating burners 50A, 50B and for checking their operating status.

[0041] The device 10 is also provided with a control mechanism 54 for controlling the device, which will be described in detail later. As shown in Fig. 2, the control mechanism 54 is configured such that an operation panel 56 is attached to the left side of the front of the housing 12 in the drawing, i.e., to the left of the door 14, and is equipped with various operation switches for operating the device 10 and temperature indicators for measuring the results of measurements by the various temperature sensors, and the interior is covered by an openable glass door. Meanwhile, as shown in Fig. 5, a control panel 58 for controlling the operation of the device 10 is attached to the left side of the housing 12. The control contents of the control mechanism 54 will be described in detail later.

[0042] Furthermore, to operate this device 10, a power source (specifically, a three-phase 200V AC power source) as a drive source, fuel (in this embodiment, LP gas is used as the fuel for the deodorizing burner 38 and the pair of heating burners 50A, 50B, but this is not limited to this and city gas 12A or kerosene can also be used), and water for sprinkling are required, and a gas solenoid valve 60 (shown in FIG. 7) is installed in the gas piping (not shown) that connects the connection plug for the LP gas gas cylinder to the deodorizing burner 38 and the pair of heating burners 50A, 50B, and is located at the lower left edge of the left side of the left side of the casing 12, and as shown in FIGS. 1 and 2, a power outlet 62 for power supply is attached to the upper left of the front of the casing 12, and power is supplied from this power outlet 62 to the necessary appliances.

[0043] 4, a sprinkler mechanism 64 is disposed from the right side of the housing 12 through the center of the back surface to the top of the dry heat chamber 18 to sprinkle water on the residue within the dry heat chamber 18 in order to shorten the cooling time and prevent the scattering of powdery residue within the dry heat chamber 18. This sprinkler mechanism 64 is configured to include a sprinkler cock 66A connected to an external water pipe, a sprinkler pipe 66C having a sprinkler valve 66B attached to its tip facing the heating chamber 48, and a sprinkler solenoid valve 66D disposed on the sprinkler pipe 66C between the sprinkler cock 66A and the sprinkler valve 66B. Here, the sprinkler cock 66A is opened and closed manually by the operator, and the sprinkler solenoid valve 66D is configured to be opened and closed under the control of the control mechanism 54, which will be described later.

[0044] As shown in Figures 1 and 2, a warning light 68 that indicates the operating status of the apparatus 10 by color is attached to the upper left of the front of the housing 12 of the apparatus 10, and by looking at the color displayed by this warning light 68, an operator can confirm the current operating status of the apparatus 10, such as whether it is in the sterilization process or the cooling process.

[0045] Specifically, the patrol light 68 has a total of six color states. First, the color state without any problems, that is, the color state in a normal operating state, is as follows: Green – basically indicates that the car is in autonomous driving mode; Purple: Indicates that the machine is in automatic operation and is maintaining the sterilization temperature (180°C) for 30 minutes during dry heat treatment. Light blue: Indicates that the machine is in automatic operation and that the cooling process is being carried out after the sterilization process is completed. Dark blue: Indicates that the machine is in automatic operation and that the deodorizing chamber is currently being cooled, which indicates that this is the final stage of the entire process.

[0046] The above four colors are basically displayed during normal operation, and the following two colors indicate the occurrence of an abnormal situation. Red: It is set to light up red when the emergency stop switch is pressed, when the waste input door 22 is inadvertently opened, or when the earthquake sensor switch is turned on. The emergency stop switch is pressed manually, but the earthquake sensor switch is automatically turned on when an earthquake occurs. When the switch turns red, the device is in a stopped state, and is set not to restart unless recovery work is carried out. Yellow: Indicates a burner abnormality. Specifically, the yellow light is set to turn on if the burner is in operation but the temperature does not rise. Basically, the yellow light turns on if there is a burner abnormality that causes the burner to not ignite. In addition to burner abnormalities, the yellow light also turns on if there is a gas shortage.

[0047] Furthermore, a door open detection sensor 70 (shown in FIG. 2) is attached to the opening door 14 on the front of the housing 12 to detect when it is opened, and this sensor is intended to detect any inadvertent opening of the opening door 14 while the sterilization process and cooling process are being carried out. Upon detection of the door opening, a buzzer (not shown) sounds, and the above-mentioned patrol light 68 is controlled to change from light blue when the sterilization process is being carried out to red. Furthermore, an operation switch 72 (shown in FIG. 7) is provided on the upper right side in front of the location where the waste input door 22 is attached, for optionally starting the drive mechanism 44 and driving the mixing frame 42 to rotate in either the forward or reverse direction. This operation switch 72 is used to ensure that, when the waste is placed into the dry heat chamber 18 by opening the waste loading door 22 and loading the waste into the dry heat chamber 18, the waste enters the dry heat chamber 18 in a compressed state to the very back, thereby ensuring a sufficient processing capacity in the device 10.The operation switch 72 rotates the agitator frame 42 in either the forward or reverse direction as desired, and only while this switch 72 is pressed does the drive mechanism 44 start to rotate the agitator frame 42, crushing and compressing the waste placed into the sterilization chamber 18.

[0048] The device 10 having the above-described external configuration has the above-described basic structure that defines the essential parts of this embodiment, and the internal configuration of this device 10 will be described below with reference to Figure 6, although some of the internal configuration overlaps with the description of the external configuration described above. Note that in Figure 6, the internal structure of device 10 is depicted schematically to facilitate understanding.

[0049] That is, this device 10 is configured to include a dry heat mechanism 16 that is installed in the lower part of the housing 12 and that performs a volume reduction process of applying dry heat (indirect heating) to the waste to release moisture from the waste and dry and reduce the volume of the waste; a communication mechanism 74 (shown in Figures 3 and 6) that is connected to this dry heat mechanism 16 and that extracts steam / moisture released from the waste and exhaust gas from heating burners 50A, 50B to the outside of the dry heat mechanism 16; and a deodorization mechanism 26 that is located above the dry heat mechanism 16 within the housing 12, is connected to the outlet of the communication mechanism 74, and combusts / heats the steam / moisture and exhaust gas extracted from this outlet, and performs a deodorization process to remove odorous components contained in the steam / moisture and exhaust gas.

[0050] As shown in FIG. 7, the control panel 58 of the control mechanism 54 is equipped with a CPU that controls the overall operation, a ROM that stores data and programs, and a RAM for temporarily storing data. The basic control content is as follows: when the device 10 is started, the deodorization process is first started, and the deodorization mechanism 26 is driven to continue the deodorization process until just before the device 10 is shut down. When the deodorization mechanism 26 is heated to a predetermined temperature and is able to perform its deodorizing function, dry heat treatment (sterilization and volume reduction treatment) of the waste is started, and after this dry heat process is completed, a cooling process is carried out to cool the dry heat mechanism 16.

[0051] 5, within housing 12, located at the bottom of the left side, are a deodorizing blower 76A for introducing air into deodorizing chamber 30 of deodorizing mechanism 26, and a cooling blower 76B for introducing outside air into heating chamber 48 of dry heat mechanism 16 to cool it. Control mechanism 54 activates deodorizing blower 76A upon startup of device 10, and initiates operation of cooling blower 76B upon start of the cooling process. In particular, an exhaust mechanism 78 is provided to enable a portion of the cooled air from cooling blower 76B to be exhausted outside dry heat mechanism 16 prior to activation of cooling blower 76B. Exhaust mechanism 78 is a characteristic feature of the present invention, and its configuration and operation will be described in detail below.

[0052] On the other hand, the dry heating mechanism 16 is composed of an inner cylinder 80 that contains the waste to be treated inside, and an outer cylinder 82 that is disposed around the outer periphery of the inner cylinder 80, and the space between the inner cylinder 80 defines a heating chamber 48 that indirectly heats the inner cylinder 80 from the outside, and is equipped with the outer cylinder 82 that forms a double-cylindrical structure with the inner cylinder 80, and a pair of heating burners 50A, 50B that heat the heating chamber 48. Specifically, the inner cylinder 80 and the outer cylinder 82 have an eccentric double-cylindrical structure, and the center position of the inner cylinder 80 is biased above the center position of the outer cylinder 82.

[0053] As a result, the heating chamber 48 defined between the inner cylinder 80 and the outer cylinder 82 has a doughnut shape with a bulging downwards in side view, as shown in Fig. 6, and the pair of heating burners 50A, 50B described above are disposed at positions corresponding to this bulging lower portion of the heating chamber 48, where the combustion flame of the LPG generated by the ignition of both heating burners 50A, 50B heats the entire heating chamber 48. Note that by heating the entire heating chamber 48 in this way, the inner cylinder 80 located inside the heating chamber 48 is indirectly heated from the outer periphery, and the waste contained in the dry heat chamber 18 defined as the internal space is brought into a state of being dry-heated. As the temperature rises in the internal space of the inner tube 80, i.e., in the dry heat chamber 18, moisture containing odorous components evaporates from the waste, thereby reducing its volume. Furthermore, as described in Reference 13 of the infectious waste disposal manual mentioned above, by maintaining this dry heat state at 180°C for 30 minutes, the infectious waste is sterilized, and the residue can be disposed of as non-infectious waste.

[0054] 6, the above-mentioned communication mechanism 74 is configured to include a first communication passage 84, the inlet of which is defined by the lower edge and communicates with the inner cylinder 80, and sends the steam / moisture generated in this inner cylinder 80 through an outlet defined by the upper edge to the deodorizing chamber 30 defined in the deodorizing mechanism 26, and a second communication passage 86, the inlet of which is defined by the lower edge and communicates with the outer cylinder 82, and sends the exhaust gas generated in the heating chamber 48 from the heating burners 50A, 50B through an outlet defined by the upper edge to the deodorizing chamber 30 of the deodorizing mechanism 26. The second communication passage 86 is disposed coaxially around the outer periphery of the first communication passage 84, forming a double-cylindrical structure.

[0055] In this way, since the communication mechanism 74 has a coaxial double-cylinder structure, the axes of the communication mechanism 74 can be unified into one, and the outlets to the deodorizing chamber 30 can be aligned in one place. As a result, the direction of the emission of the combustion flame of the deodorizing burner 38 constituting the deodorizing mechanism 26 can be set to aim at both outlets aligned in one place, and the steam / moisture and exhaust gas coming from both outlets can be effectively burned off (combusted) by the combustion flame of the deodorizing burner 38. In this way, the deodorizing function of the deodorizing mechanism 26 of this device 10 is reliably performed, and the effect of configuring the device 10 more compact is achieved.

[0056] Here, cooling blower 76B, which introduces outside air into dry heat mechanism 16 to cool it when the cooling process starts, is located on the rear surface side of the bottom of housing 12, as shown in Fig. 5, and its outlet opens into heating chamber 48. When the cooling process starts, cooling blower 76B is controlled by control mechanism 54 to wait for exhaust mechanism 78, which will be described later, to start, that is, after a predetermined delay time has passed since exhaust mechanism 78 started.

[0057] More specifically, cooling blower 76B is provided to cool heating chamber 48 when the cooling process begins, but as is clear from the above explanation, heating chamber 48 is connected to deodorizing mechanism 26 via second communication passage 86 of communication mechanism 74, and if cooling blower 76B is activated to blow cold air into heating chamber 48 immediately after the cooling process begins, this cold air will be directly delivered to deodorizing chamber 30 of deodorizing mechanism 26. When cold air is delivered to deodorizing chamber 30 in this way, the temperature in deodorizing chamber 30 drops, impairing the deodorizing effect. As a result, the exhaust air from dry heat mechanism 16 via communication mechanism 74 cannot be deodorized, and there is a risk of odors being released to the outside. For this reason, immediately after the start of the cooling process, the cooling blower 76B is not started, but the exhaust mechanism 78 described below is started first, and even if the cooling blower 764B is started and cold air (cooled air) is blown into the heating chamber 48, some of the cooled air in the heating chamber 48 is exhausted (escaped) into the housing 12 to prevent it from going directly to the deodorizing chamber 30.

[0058] As described above, the exhaust mechanism 78 is arranged to enable a portion of the cooling air from the cooling blower 764B to be exhausted (released) outside the heating chamber 48 of the dry heat mechanism 16 prior to the start of the cooling blower 76B, so that when the cooling process is started, the cold air from the cooling blower 76B passes through the heating chamber 48 and is brought directly into the deodorizing chamber 30, preventing the temperature of the deodorizing chamber 30 from dropping.

[0059] Specifically, as shown in Figures 2 and 3, this exhaust mechanism 78 is configured with two exhaust ducts 88A; 88B, each having an inlet defined by its lower edge that communicates with the heating chamber 48 and an outlet defined by its upper edge that opens within the housing 12, and electromagnetic exhaust solenoid valves 90A; 90B that are attached to the outlet of each exhaust duct 88A; 88B in an open state so as to allow the air in the heating chamber 48 to be released into the housing 12, and that do not release the air in the heating chamber 48 when closed.

[0060] 3, the outlets of both exhaust ducts 88A; 88BB are located directly above their corresponding inlets and to the side of deodorizing mechanism 26. This allows air within heating chamber 48 to be smoothly exhausted into housing 12 through each exhaust duct 88A; 88B when each exhaust solenoid valve 90A; 90B is open. Even if heated air within heating chamber 48 is exhausted into housing 12, ventilation fan 24 ventilates the air within housing 12 with outside air, effectively preventing the temperature within housing 12 from rising.

[0061] 7, each exhaust solenoid valve 90A; 90B is connected to the control mechanism 54 and is controlled to open and close under the control of the control mechanism 54, and is configured to close the corresponding exhaust duct 88A; 88B when no ON signal is received from the control mechanism 54, i.e., when an OFF signal is output, the control mechanism 54 outputs an ON signal. In other words, when the control mechanism 54 changes from an OFF signal to an ON signal, the corresponding exhaust duct 88A; 88B is opened from its closed state, and air cooled by air from the cooling blower 76B in the heating chamber 48 is discharged into the housing 12. On the other hand, prior to starting the cooling blower 76B, the control mechanism 54 outputs an ON signal to the exhaust solenoid valves 90A, 90B to drive them to open. However, a feature of this embodiment is that instead of outputting an ON signal to both exhaust solenoid valves 90A, 90B simultaneously, the control mechanism 54 is set up so that it first outputs an ON signal to one of the exhaust solenoid valves 90A, and then, once a predetermined time has passed for the voltage to stabilize, it outputs an ON signal to the other exhaust solenoid valve 90B.

[0062] In this way, the ON signal for driving both exhaust solenoid valves 90A and 90B to open from a closed state is not output simultaneously to both exhaust solenoid valves 90A and 90B, but is output sequentially with a time lag. This means that the large current required to drive the exhaust solenoid valves 90A and 90B to open simultaneously is not passed through all at once, reducing the power load and damage to the power transformer, and enabling the lifespan of the transformer to be extended.

[0063] Hereinafter, although not related to the gist of the present invention, various configurations for ensuring the functioning of the device 10 and enabling sterilization and volume reduction processing will be described.

[0064] First, as already described above, the inner cylinder 80, whose internal space is defined as the dry heat chamber 18, is formed with a waste inlet 20 that opens into the dry heat chamber 18, and a waste inlet door 22 is attached to this waste inlet 20 so that it can be opened and closed. Furthermore, a discharge outlet 34 for removing treated waste (hereinafter referred to as residue) is formed in the lower part of the side of the inner cylinder 80, and a blocking plug (not shown) is detachably attached to this discharge outlet 34. This blocking plug blocks the discharge outlet 34 during the treatment operation, and is removed when the residue is to be removed after treatment. This discharge outlet 34 is arranged so that it can be opened by a discharge door 36.

[0065] Here, the internal space of the inner cylinder 80 of the dry heat mechanism 16 is specified as the dry heat chamber 18 in which waste is stored for dry heat treatment (sterilization and volume reduction treatment), and an agitator frame 42 is provided to efficiently reduce the volume of the stored waste and to crush the material to be treated during sterilization in accordance with the description in [Explanation] (4) of 4.6 Intermediate treatment within the facility on page 22 of the above-mentioned treatment manual (published in May 2023), which states, "A method of sterilization using a dry heat sterilization device (and making it clear that sterilization has been carried out by further crushing, etc.)," and this agitator frame 42 is configured to be rotated by a drive mechanism 44.

[0066] As shown in Figures 1, 2 and 6, this stirring frame 42 is composed of a right shaft portion 92A located at the right end of the dry heat chamber 18 in the figure and rotatably supported while protruding outward from the right side plate of the inner cylinder 80, a left shaft portion 92B located at the left end of the dry heat chamber 18 in the figure and rotatably supported on the left side plate of the inner cylinder 80, three arms 94A; 94B; 94C extending radially outward at equal angles from the right shaft portion 92A, three arms 96A; 96B; 96C extending radially outward at equal angles from the left shaft portion 92B, and three stirring blades 98A; 98B; 98C connecting the corresponding tips of the three opposing arms 94A; 94B; 94C; 96A; 96B; 96C to each other. The outer circumferential edges of the stirring blades 98A, 98B, and 98C are set to be slightly spaced apart from the inner circumferential surface of the inner cylinder 80.

[0067] On the other hand, the drive mechanism 44 described above is for driving and rotating the agitation frame 42, and is configured with a drive motor 100, a drive sprocket 102 fixed to the motor shaft of the drive motor 100, a driven sprocket 104 fixed to the protruding end of the drive sprocket 102 protruding axially outward from the right side plate of the inner cylinder 80, and an endless chain 106 looped endlessly between the drive sprocket 102 and the driven sprocket 104. The grease pump 46 described above is provided to supply grease to a bearing 93 (shown in FIG. 6) that rotatably supports the right shaft portion 92A, thereby greasing the only moving part of the drive mechanism 44.

[0068] The agitator frame 42 and the drive mechanism 44 that drives it are configured in this manner, so that when the drive mechanism 44 is started and the agitator frame 42 is rotated, the three agitator blades 98A; 98B; 98C rotate inside the inner cylinder 80, i.e., the waste inside the dry heat chamber 18 is efficiently agitated and sheared, and the outer edges of the three agitator blades 98A; 98B; 98C revolve along the inner surface of the inner cylinder 80 while being close to this inner surface.Therefore, even if waste sticks to the inner surface of the inner cylinder 80, this stuck waste can be reliably scraped off, and the waste inside the dry heat chamber 18 is efficiently sterilized and reduced in volume.

[0069] The sprinkler mechanism 64 described above sprinkles water on the treated waste (residue) that has been dried in the dry heat chamber 18 and stirred by the stirring frame 42 into fine particles. By carrying out the sprinkler process in this way when the cooling process is being carried out, smoking of the treated material (residue) while it is still being stirred by the stirring frame 42 is reliably prevented, and the temperature inside the dry heat chamber 18 is effectively lowered by the heat of vaporization when an appropriate amount of water is sprinkled on the treated material, thereby shortening the process time for the cooling process and ultimately the overall processing time.

[0070] Next, the configuration and control operation of the control mechanism 54 of the device 10 will be described with reference to FIG. First, in the overall control of the device 10, a control mechanism 54 is provided which controls the drive of the drive motor 100 of the drive mechanism 44 which drives the stirring frame 42, controls the combustion of the deodorizing burner 38 and the two heating burners 50A and 50B, and controls the on / off of the LPG supplied to these burners 38, 50A and 50B via the gas solenoid valve 60, controls the opening and closing of the sprinkler solenoid valve 66 of the sprinkler mechanism 64 and the first and second exhaust solenoid valves 90A and 90B of the exhaust mechanism 78, and controls the lighting of the warning light 68.

[0071] 7, although details are not shown, the control mechanism 54 is equipped with a CPU and ROM with a built-in control program, and RAM for recording detected temperature information, etc. In addition to the door open detection sensor 70 and agitation frame operation switch 72 described above, the input devices connected to the control mechanism 54 include a first temperature sensor 114 that detects the temperature of the dry heat chamber 18 (dry heat temperature), a second temperature sensor 116 that measures the temperature of the heating chamber 48 (heating temperature), a third temperature sensor 118 that measures the temperature of the deodorization chamber 30 (deodorization chamber temperature), and a fourth temperature sensor 120 that measures the temperature of the exhaust port 34 (exhaust temperature).

[0072] Furthermore, the above-mentioned control mechanism 54 is connected, as input devices, with an operation switch 124 that turns on and off the operation of the apparatus 10, and a timer 126 that displays the time for 180°C / 30 minutes for sterilization in the above-mentioned dry heat step. The operation switch 124 is equipped with a lamp that is set to turn off when turned off and to turn on when turned on.

[0073] On the other hand, the devices that are controlled by this control mechanism 54 include the deodorizing burner 3, a pair of left and right heating burners 50A; 50B, the grease pump 46, the gas solenoid valve 60, the sprinkler solenoid valve 66D, the patrol light 68, the deodorizing blower 76A, the cooling blower 76B, the exhaust solenoid valves 90A; 90B, a first temperature display unit 114A that displays the detected temperature (processing temperature) and upper limit set temperature of the dry heat chamber 18, a second temperature display unit 116A that displays the detected temperature (processing temperature) and upper limit set temperature of the heating chamber 48, a third temperature display unit 118 that displays the detected temperature (processing temperature) and upper limit set temperature of the deodorizing chamber 30, and a fourth temperature display unit 120A that displays the detected temperature (processing temperature) and upper limit set temperature of the exhaust port 34.

[0074] Next, the waste treatment procedure configured as described above will be explained in terms of the control operation of the control mechanism 54. After waste is introduced into the dry heat chamber 18 through the waste inlet 20 and the door 14 is sealed, when the power switch 122 is turned on and the operation switch 124 is turned on, the deodorizing burner 38 is first started to raise the temperature inside the deodorizing chamber 30. When the temperature inside the deodorizing chamber 30 reaches a predetermined temperature, e.g., 200°C, the heating burners 50A and 50B are started. Meanwhile, when a predetermined time (e.g., 20 minutes) has elapsed since the operation switch 124 was turned on, the drive motor 100 of the drive mechanism 44 is started to rotate the agitation frame 42. This rotational drive of the agitation frame 42 continues until the end of the cooling process. Here, the heating temperature of the heating chamber 48 is set in advance to approximately 300°C, although this varies depending on the type of waste, and the timer 126 connected to the control mechanism 54 is set to measure the time so that once the temperature of the dry heat chamber 18 reaches the sterilization temperature of 180°C, this temperature will be maintained for 30 minutes.

[0075] Meanwhile, when the heating burners 50A, 50B heat the heating chamber 48 and the temperature begins to rise, the dry heat chamber 18 is heated from the periphery, causing the temperature inside the dry heat chamber 18 to rise. As the temperature rises, moisture in the infectious waste stored in the dry heat chamber 18 first evaporates, and drying begins. Oily waste, such as waste oil and synthetic resin, generates a lot of evaporated gas, but the temperature of the heating chamber 48 is controlled by controlling the power of the heating burners 50A, 50B in accordance with the detection results of the temperature sensors 114, 116 installed in the dry heat chamber 18 and the deodorization chamber 30, so that the temperature of the deodorization chamber 30 does not exceed a certain temperature. The sterilization temperature of the dry heat chamber 18 is automatically controlled to be maintained at the set temperature in accordance with the set temperature of the dry heat chamber 18.

[0076] Here, the gas generated in the dry heat chamber 18 ascends through the first communication passage 84 of the communication mechanism 74 and is brought into the deodorization chamber 30. Meanwhile, the exhaust gas generated by the heating burners 50A and 50B flows through the heating chamber 48 as an exhaust gas flow space and then ascends through the second communication passage 86 of the communication mechanism 74 and is brought into the deodorization chamber 18. The steam and exhaust gas brought into the deodorization chamber 30 are then combusted at high temperatures by the flame of the deodorization burner 38. This combustion is gas-only and does not involve solid matter, so no sparks, soot, or other emissions are generated. Furthermore, the gas and the resulting exhaust gas are completely combusted, resulting in no smoke, dust, sparks, or other emissions, eliminating any risk of external contamination or combustion. Because the gas is completely combusted, all odorous components are eliminated and the combustion gas is completely deodorized. Therefore, this deodorized gas can be directly discharged from the exhaust port 30A, eliminating the need for a deodorizing catalyst.

[0077] As the dry heat treatment process for waste disposal continues and the waste dries, the amount of gas generated decreases, but the rotating agitator frame 42 of the dry heat chamber 18 promotes gas generation and the dried waste is finely crushed into powder.

[0078] After this, when the processing time (e.g., 30 minutes) preset by timer 126 for setting the waste processing time has elapsed, the termination processing process is started, and first the fuel supply to combustion burners 50A, 50B is cut off, the operation of combustion burners 50A, 50B is stopped, the heating operation of heating chamber 48 is stopped, and an ON signal is output to one electromagnetic exhaust valve 90A, which is driven to open. After a predetermined time (e.g., 2 minutes) has elapsed since the opening of one electromagnetic exhaust valve 90A, an ON signal is output to the other electromagnetic exhaust valve 90B, which is driven to open.

[0079] In this way, the two electromagnetic exhaust valves 90A, 90B are driven to open with a time lag, and this opening puts the heating chamber 48 in communication with the outside of the housing 12 via the exhaust ducts 88A, 88B. Then, even if cooling air is introduced into the heating chamber 48 by driving the cooling blower 76B next, not all of the air will be brought into the deodorizing chamber 30, but most of it will be exhausted into the housing 12 via the two exhaust ducts 88A, 88B. In this way, the drive currents to the two electromagnetic exhaust valves 90A, 90B flow with a time lag, so the amount of current that flows at one time is suppressed and it is possible to prevent an unnecessary increase in the electrical load on the power transformer, etc., and it is possible to effectively prevent the power transformer, etc. from being damaged and its lifespan from being unnecessarily shortened.

[0080] After activating exhaust mechanism 78 in this way and establishing a state in which heating chamber 48 is in communication with the outside of housing 12 via two exhaust ducts 88A, 88B, cooling blower 76B is activated to send room temperature air from inside housing 12 into heating chamber 48, thereby executing the cooling process within heating chamber 48. As a result, the temperature of heating chamber 48 gradually decreases, and as the temperature of heating chamber 48 decreases, dry heat chamber 18, which is surrounded by heating chamber 48, gradually cools and decreases in temperature.

[0081] When the temperature of the dry heat chamber 18 drops and reaches a predetermined set temperature, for example, 110°C, as detected by the first temperature sensor 114, the control mechanism 54 activates the water sprinkler solenoid valve 66D, driving it to open, and starts the water sprinkler operation, which sprinkles a predetermined amount of water from the water sprinkler valve 66B into the dry heat chamber 18. By performing the water sprinkler operation for a predetermined period of time, tap water is sprinkled on the waste in the dry heat chamber 18, resulting in a moist state. This effectively prevents the powdered waste from smoking as the mixing frame 42 continues to mix. After this, when the final processing process is completed and the worker opens the door 11 of the outlet 10 to remove the waste from the dry heat chamber 18, the powdered waste can be removed in a moist state, significantly improving worker efficiency.

[0082] On the other hand, by performing the water sprinkling operation for a predetermined period of time, the temperature inside the dry heat chamber 18 drops due to the heat of vaporization, shortening the cooling time, i.e., the waste treatment time. Furthermore, this device 10 originally reduces the volume of waste by effectively evaporating the moisture contained in the waste by heating it from the outside of the dry heat chamber 18 to a so-called "steaming" state, which may at first glance seem to contradict the water sprinkling operation via the water sprinkling mechanism 40, but this water sprinkling operation is performed as part of the final treatment process after the series of waste treatment processes have been completed, and there is no contradiction between them.

[0083] On the other hand, when the watering operation is finished as described above, the system waits for the temperature of the dry heat chamber 18 to drop to a predetermined cooling stop temperature, for example 60°C, and when it is detected that the temperature of the dry heat chamber 18 has dropped to the predetermined cooling stop temperature, it stops driving the drive motor 100, terminates the agitation operation by the agitator frame 42, and simultaneously starts a cooling timer that determines the cooling time of the deodorizing chamber 18. This is a control procedure that is executed to manage the drop in the temperature of the deodorizing chamber 18 over time, because even if the temperature of the dry heat chamber 18 has dropped to the predetermined cooling stop temperature, the temperature of the deodorizing chamber 18 is still maintained at a high temperature.

[0084] Then, after waiting for the cooling time to elapse, when it is detected that the cooling timer has timed out, the series of termination processes is completed, and all drive systems are stopped, thereby completing all control procedures for waste disposal, and the power switch 122 is turned off.

[0085] After this, at an appropriate timing, the worker opens the discharge door 36, opens the discharge outlet 34, and starts the work of removing the powdery residue as treated waste. When all the treated materials have been removed from the dry heat chamber 18, all the work is completed.

[0086] Furthermore, the gases generated from the waste dried in the dry heat chamber 18 and the exhaust gases from the heating burners 50A, 50B are combusted sufficiently within the deodorizing chamber 18, and are completely combusted without generating any emissions such as smoke, sparks, dust, or soot, so there is absolutely no pollution to the surrounding area. Furthermore, since the waste is dried and only the gases and exhaust gases are burned, fuel costs are reduced and processing time is shortened.

[0087] Furthermore, when processing oily waste such as synthetic resins, the waste is not directly burned but dried and only the gas is burned, which prevents the temperature from reaching high levels, eliminating the need to spray water into the device or to feed it in a quantitative manner. This eliminates material and structural issues, reduces manufacturing costs, and also allows the device to be made smaller.

[0088] It goes without saying that the present invention is not limited to the configuration and numerical values of the embodiment described above, and various modifications are possible without departing from the spirit and scope of the present invention.

[0089] For example, while the above-described exhaust mechanism 78 has been described as having two exhaust ducts 88A and 88B, it goes without saying that the present invention is not limited to this configuration and may instead be configured to have one exhaust duct or three or more exhaust ducts. Furthermore, while the upper ends of exhaust ducts 88A and 88B have been described as opening into the housing 12, the present invention is not limited to this configuration and may instead be configured to open to the outside of the housing 12. Essentially, it goes without saying that any configuration is acceptable as long as it establishes a state in which the heating chamber 48 is connected to the outside when the exhaust operation is initiated. [Industrial Applicability]

[0090] The dry heat volume reduction treatment device configured as described above can reduce the temperature of the residue when it is removed to a level that does not cause problems in terms of workability, even if the cooling time of the residue after dry heat treatment (volume reduction treatment) is shortened.By shortening the processing time using this device, not only is workability improved, but processing costs are also reduced, making it possible to provide an economical device, and its industrial applicability is extremely high. [Explanation of symbols]

[0091] 10 Dry heat volume reduction treatment equipment (dry heat sterilization volume reduction treatment equipment): Equipment 12. Case 14 Opening and closing doors 16 Dry heat mechanism 18 Dry heat chamber 20 Inlet 22 Waste input door 24 Ventilation fan 26 Deodorizing mechanism 28 Exhaust Stack 30 Deodorizing Room 30A exhaust port 32 Exhaust opening 34 Outlet 36 Discharge door 38 Deodorizing burner 40 Deodorizing door 42 Mixing frame 44 Drive mechanism 46 Grease pump 48 Heating chamber 50A;50B Heating Burner 52A;52B Heated Door 54 Control Mechanism 56 Control panel 58 Control Panel 60 Gas solenoid valve 62 power outlets 63 Electrical Wiring 64 Watering mechanism 66A Sprinkler cock; 66B Sprinkler valve; 66C Sprinkler pipe; 66D Sprinkler solenoid valve 68 Patlite 68A Patlite display driver 70 Door open detection sensor 72 Operation switch 74 Communication mechanism 76A Deodorizing Blower 76B Cooling Blower 78 Exhaust system 80 Inner cylinder 82 Outer cylinder 84 First Passage 86 Second Passage 88A;88B Exhaust duct 90A; 90B Exhaust solenoid valve 92A Right shaft section 92B left shaft 93 Bearings 94A;94B;94C:96A;96B;96C Arm 98A;98B;98C Stirring blade 100 drive motor 102 Drive sprocket 104 driven sprocket 106 Endless Chain 114 First temperature sensor 114A Temperature display section 114B Dry heat chamber temperature upper limit value setting section 116 Second temperature sensor 116A Temperature display section 116B Heating chamber temperature upper limit setting unit 118 Third Temperature Sensor 118A Temperature display section 118B Deodorization chamber temperature upper limit setting unit 120 Fourth Temperature Sensor 120A temperature display section 120B Exhaust temperature upper limit setting section 124 Operation switch 126 Timer

Claims

1. a housing for the device; dry heating means that is installed within the housing and that performs a volume reduction process of dry-heating the waste to release moisture from the waste and dry and reduce the volume of the waste; a communication means connected to the dry heat means for extracting steam / moisture released from the waste to the outside of the dry heat means; a deodorizing means disposed within the housing above the dry heating means, connected to an outlet of the communicating means, for combusting / heating the steam / moisture extracted from the outlet of the communicating means and performing a deodorizing step of removing odorous components contained in the steam / moisture; a control means for starting the deodorizing process when the device is started and continuing the deodorizing process until immediately before the device is shut down, and for carrying out a cooling process for cooling the dry heat means after the volume reduction process is completed and the volume reduction process is finished; a cooling blower that introduces outside air into the dry heating means to cool it when the cooling step starts; an exhaust means for exhausting a portion of the cooling air from the cooling blower to the outside of the dry heating means prior to starting the cooling blower; A dry heat volume reduction treatment device comprising:

2. The dry heat volume reduction treatment device described in claim 1, characterized in that the dry heat means comprises an inner tube in which the waste is stored, an outer tube arranged on the outer periphery of the inner tube, the space between the inner tube defining a heating chamber for heating the inner tube from the outside, and an outer tube forming a double cylindrical structure with the inner tube, and a heating burner for heating the heating chamber.

3. The dry heat volume reduction treatment apparatus described in claim 2, characterized in that the connecting means is configured to include a first connecting passage whose inlet is connected to the inner cylinder and which sends steam / moisture generated in the inner cylinder to the deodorizing means via an outlet, and a second connecting passage whose inlet is connected to the outer cylinder and which sends exhaust gas from the heating burner generated in the heating chamber to the deodorizing means via an outlet.

4. 4. The dry heat volume reduction treatment apparatus according to claim 3, wherein the second communication passage is disposed around the outer periphery of the first communication passage to form a double cylindrical structure.

5. The dry heat volume reduction treatment device described in claim 1, characterized in that the exhaust means comprises two exhaust ducts whose inlets are connected to the heating chamber and whose outlets open within the housing, and exhaust valves that are attached to the outlets of each exhaust duct in an openable and closable manner, which allow the air in the heating chamber to be released into the housing when open, and do not release the air from the heating chamber when closed.

6. 6. The dry heat volume reduction treatment apparatus according to claim 5, wherein a ventilation device is attached to a ceiling of the housing for ventilating the air inside the housing to the outside.

7. The dry heat volume reduction treatment device described in claim 5, characterized in that the control means keeps both exhaust valves in a closed state while the volume reduction process is being carried out, and controls one exhaust valve attached to one exhaust duct to operate from a closed state to an open state upon the start of the cooling process, and after a predetermined time has elapsed since the operation of this one exhaust valve, controls the other exhaust valve attached to the other exhaust duct to operate from a closed state to an open state.

8. The dry heat volume reduction treatment device described in claim 5, characterized in that the control means stops the deodorization process in the deodorization chamber when it is detected that the temperature of the heating chamber has dropped to a predetermined set value as a result of the cooling process, and controls the device to stop operation when a predetermined time has elapsed after the end of the deodorization process.

9. the deodorizing means includes a deodorizing burner disposed to provide a combustion flame at a position where the outlet of the communicating means is connected and where the steam / moisture is extracted; 2. The dry heat volume reduction treatment apparatus according to claim 1, wherein the control means controls the deodorizing burner to continue operating while the volume reduction step and the cooling step are being performed.

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