JPH0240280A - Apparatus for drying raw sewage - Google Patents

Abstract

PURPOSE:To rapidly evaporate water in raw sewage in a vessel by winding a heat exchange pipe around the vessel, allowing one end of the pipe to communicate with the inside of the vessel, feeding hot air into a case enclosing the vessel and heating the sewage from the inside and outside of the vessel. CONSTITUTION:Plural spherical heat accumulating elements 27 are put in a drying pot 14 as a vessel contg. raw sewage and a heat exchange pipe 18 is wound around the pot 14. One end of the pipe 18 is allowed to communicate with the inner bottom of the pot 14 through a communicating pipe 53 and a hollow driving shaft 21 and the other end is connected to a tan 51. By firing a burner 14, hot air is fed into the space between an outer case 11 and the pot 14 to heat the entire pot 14 and simultaneously heat is accumulated in the elements 27. Raw sewage in the pot 14 is heated and the air in the pipe 18 is also heated and blown into the pot 14, so the sewage is rapidly dried.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention is applicable to a deep urine drying device that processes human waste outdoors where there is no purification facility, in transportation systems such as ships and trains, and in tunnels where vacuum cars cannot enter. [Prior Art] In ordinary houses, human waste excreted from the human body is either discharged into the sewage system through a flush toilet or the like, or temporarily stored in a purification layer and purified before being discharged into a general river. However, when events are held outdoors, such as sports days, trade fairs, and gatherings, where a large number of people gather, human waste has been disposed of by providing temporary toilets. In this way, movable temporary toilets have been used in the past, but most of them had a toilet tank for collecting human waste, and the human waste excreted from the human body was stored in this toilet tank. Therefore, after use, the accumulated floor tail must be removed from the temporary toilet by suction using a vacuum car or the like, which is a time-consuming process. In addition, transportation systems such as trains, buses, and ships that operate long distances are equipped with special tanks to store excreted human waste, and deep beds are stored inside these tanks, which are treated with odor-proofing chemicals. The most common method was to collect the waste using a vacuum car or the like. Traditional temporary toilets or mobile toilets! In the treatment of 1m-long human waste, most of it is collected and disposed of in the same state as it has been excreted from the human body, which can only be described as extremely unhygienic. For this reason, if temporary toilets are used for a long period of time, excreted human waste may remain.
Not only did it cause a bad odor, but workers disliked it, and it was not desirable from the perspective of modernizing processing. For these purposes, various methods for hygienically disposing of human waste have been considered. For example, chemicals are injected together with human waste to sterilize and prevent the generation of bad odors. This is often used in transportation systems such as Shinkansen trains, but it has the disadvantage that it cannot be used for a long time because the chemicals are circulated, and the costs associated with the use of chemicals are high. Another method is to prevent the release of odors by storing human waste in bags made of plastic or the like and backing them. However, it is necessary to use a plastic bag with a fairly large area for each excretion, which increases processing costs and
Post-processing to separate the human waste from the plastic bag at a later date was troublesome. There is also a method of directly drying the excreted ceremonial clothing using firepower such as a burner. However, the major component of buckling is water, and removing this water consumes a large amount of energy and increases the Shobara time for one batch. In view of these drawbacks, the applicant and the same inventor of the present application have proposed a human waste drying device in which human waste is stored in a drying pot, and a rotating stirring blade and a heat storage body made of ceramic or the like are housed therein. (For example, patent application No. 124150 of 1983)
In this newly proposed bed bundle drying device, the shobara was dried using heat from the heat storage body, and the shobara was stirred by stirring blades, resulting in high thermal efficiency and extremely quick drying of the robes. However, this newly proposed human waste drying device has a structure in which heat is applied from the outer periphery of the drying pot to warm the entire drying pot, resulting in poor thermal efficiency and high energy loss. [Problems to be Solved by the Invention] In view of the above-mentioned drawbacks, the present invention is designed to recover part of the heat from the burner and supply it to the drying oven as hot air in order to evaporate only the water from human waste, which has an extremely high water content. The purpose of the present invention is to provide a human waste drying device that can improve thermal efficiency. (Means for Solving the Problems) The present invention provides a heat-resistant container for storing human waste, an outer case that airtightly covers the container from the outside, and a heating device that supplies hot air between the container and the outer case. means, a shoe 5 exchange pipe wrapped around the outer periphery of the container, a series i1 pipe that connects one end of this heat exchange pipe and the inside of the container, and a series jm that connects the inside of the container and the inside of the outer case. The present invention provides a sludge drying device characterized by comprising a pipe and a discharge means for discharging air from the space between the container and the outer case. Human waste is stored in a container, and the human waste is heated from the outside of the container using a burner or the like.A heat-resistant heat storage material such as ceramic is stored in this container, and this heat storage material and Since the human urine is stirred, the heat from the outside of the container warms the container itself and the entire heat storage body, and the heat radiated from the surface of the heat storage body heats the double urine, making it possible to quickly evaporate water.
A part of the heat that heats the drying pot is transferred to the air through the heat exchange pipe, and the air is released as hot air into the drying pot. For this reason, F from inside the drying pot

[Since the urine can be heated, some of the heat that should have been used up can be used to supply heat to the inside of the drying pot, making it possible to dry extremely quickly. Therefore, when used in a temporary toilet, only the water that makes up the majority of the compressed urine quickly evaporates, and the remaining solid components remain in the form of bundles, so the temporary toilet cannot be operated continuously for a long period of time. It is something that can be done. [Example] Hereinafter, an example of the present invention will be described with reference to the drawings. In this embodiment, the Shobara drying device can be moved by a trunk or the like. I will explain about the temporary toilet t. The temporary toilet has a box-like shape made of, for example, plastic or strong resin, and is placed on the ground with iLi! The base 2 to be used has a cubic shape, and the top 81 of this base 2
A house 3 with a roof is fixed to the house 1, and a door 4 is attached to the front of the house 3, which opens forward and backward and allows the user to enter the house 3. Inside this temporary toilet 1, located on the top surface of this base 2, a raw urine drying device 5 is installed, and this raw urine drying device 5 is installed! A toilet bowl 6 for receiving and stopping compressed urine is fixed to the upper part of ArrL5. Also,
A dust collector 7 is disposed on the side surface of the base 2, and a diffusion pipe 8 is attached to the upper part of the dust collector 7 for discharging moisture into the outside air. Moreover, FIG. 2 is a sectional view showing the internal structure of the Shobara drying device 5 shown in FIG. 1. This Shobara drying device 5 is assembled in a unitary manner, and the outside consists of an outer box 1 made of vertical-shaped thin-walled steel plate.The bottom of this outer box is closed and the top is closed. The upper opening of this outer box 11 has an outer lid]2
is fixed. A support plate 13 is fixed to the upper part of the inner wall of the outer box 11, and the support plate 13 is made of a heat-resistant material such as a thin stainless steel plate, and has a hemispherical curved lower part. The drying pot 14 is fixed, and the drying pot 1 is suspended in the center of the outer box 11 by the support plate 13. Therefore, a space that is sealed from the outside is formed between the outer box 11 and the drying pot 14. Further, the top of the drying pot 14 is open, and an inner lid 15 is tightly fixed to the top opening of the drying pot 14, so that the drying pot 14 can be closed from the outside. A burner pipe 16 that burns oil, gas, etc. and blows out hot air is connected to the lower part of the outer box 1. A discharge pipe 17 is connected to the position. Further, a heat exchange pipe 8 made of a material with good thermal conductivity such as copper is wound around the outer periphery of the drying pot 14, and one end and the other end of this heat exchange pipe 18 are connected to the outer box 11, respectively. It should protrude to the outside. Bearings 19.20 are fixed at the center of the outer cover 12 and the center of the inner cover 15, respectively, with their axes aligned, and a drive pipe 21 having a hollow interior is mounted on both bearings 19.20.
is rotatably supported. And this drive pipe 2
A cylindrical tip fitting 22 is fixed to the lower end of the drying pot 14, and a concave portion at the lower end of the tip fitting 22 fits into a convex portion 23 protruding from the center of the bottom of the drying pot 14. The lower end of the tip fitting 22 is rotatably held by the portion 23. An air hole 24 is opened in the center of the metal fitting 22, and the lower part of the air hole 24 branches left and right to form a communication hole 25.
This communicates with the internal space of the drying pot 14. Further, four stirring blades 26 having a shape close to the curved surface of the bottom of the drying pot 14 are attached at four locations on the outer periphery of the tip metal fitting 22 at an angle of 90 degrees apart. The planar arrangement of the tip fitting 22 and the stirring blade 26 is shown in FIG. Inside the drying pot 14, a plurality of spherical M heating bodies 27 made of ceramic such as alumina (aluminum dioxide), steel such as stainless steel, etc. are housed. Moreover, there is an outer M between the upper part of this drying pot 14 and the toilet bowl 6.
12. A four-person pipe 28 is inserted through the inner lid 15, and this introduction pipe 28 is connected to the toilet bowl 6, so that the Shobara can be put into the drying pot 14. Next, a stopper 29 is connected to the upper end of the drive pipe 21 and above the outer cover 12.
A vent hole 3o is opened through the upper and lower sides, and a connecting sleeve 31 fixed to the human waste drying device 5 is connected to the upper end of the stopper 29. A vent hole 32 is also formed inside the connecting sleeve 3, through which air from the outside can flow into the drive vibrator 21. can be rotated freely. Further, a worm gear 33 is fixed to the outside of the stopper 29, a worm 34 is meshed with the worm gear 33, and a sprocket wheel 35 is fixed to the worm 34. A chain 36 is wound around the sprocket wheel 35.
is wrapped around the sprocket wheel 37. This sprocket wheel 37 is rotated by a motor 3B fixed to the upper part of the outer body 12, and
The output of 8 is sprocket wheel 37, chain 36,
It is transmitted to the worm via the sprocket wheel 35. Next, FIG. 4 shows the state of connection between this freeze-urine drying apparatus and the dust collector 7. The burner vibe 16 is connected to a burner 41 that uses oil or gas as a raw material and supplies high-temperature hot air using these fuels as a raw material, and a catalyst box 42 is connected to the exhaust pipe 11. A filter 43 made of a metal wire mesh or the like and a catalyst body 44 made of a material such as platinum or platinum are inserted into the catalyst box 42. A ventilator 46 is connected to the discharge side of the catalyst box 42 via an exhaust pipe 45, and the ventilator 46 is connected to the diffusion pipe 8. A motor 47 and a fan 48 driven by the motor 47 are housed within the exhaust fan 46. Next, one end of the heat exchange pipe 18 is connected to a blower 50.
This air blower 50 has a moku 51 connected to it.
A fan 52 driven by a motor 51 is housed. The other end of the heat exchange pipe 18 is bent upward to form a communication pipe 53, and this communication pipe 53 is connected to the connection sleeve 31.
5 is connected to a recursion pipe 54 that communicates with the inside of the drying pot 14 . They are connected by a return pipe 54. Next, the operation of this embodiment will be explained. First, a person who wants to relieve himself enters the temporary toilet l and defecates toward the toilet bowl 6. This excreted urine is returned to the toilet bowl 6.
The particles fall through the five-person pipe 28 and are temporarily accumulated inside the drying pot 14. When a certain amount of human waste is stored in the drying pot 14 due to mass sales, the burner 41 is operated to inject hot air from the burner pipe 16 into the space between the outer box 11 and the drying pot 14. At this time, since the motors 47 and 51 are activated, the air between the outer box 11 and the drying pot 14 is constantly sucked in the direction of the diffusion pipe 8 via the exhaust pipe 17, the catalyst box 42, and the exhaust pipe 45. There is. Also, motor 5
1 is activated, outside air flows inside the erectile pipe 118 and is caused to flow in the direction of the connecting sleeve 31. At the same time, since the air inside the outer box 11 is sucked by the fan 48, the air inside the return pipe 54 is also sucked.
The air inside the drying oven 14 flows through the return pipe 54 and enters the outer box 11, and is then discharged into the outer enclosure together with the hot air from the burner 41. With this order, air from the outside and hot air from the burner are circulated inside the human waste drying device 5. As mentioned above, since the air heated by combustion in the burner 41 is released into the outer box 11 from the burner vibe 16, this heat heats the entire lower part of the drying pot 14, and at the same time, the heat is transferred to the drying pot. The heat is also stored in the heat storage body 27 housed in the heat storage body 14 . Therefore, the frozen urine stored in the drying pot 14 is
The whole drying pot 14 is heated by the hot air from the burner 41 and the heat from the heat storage body 27, and the moisture starts to ooze out. At the same time, the motor 38 is operated, and the worm 34,
The drive pipe 21 is rotated via the worm gear 33. Therefore, the stirring blade 26, which is fixed to the drive pipe 21, approaches the bottom of the drying pot 14 and rotates horizontally.
The human waste and the heat storage body 27 are stirred at the same time, and the accumulated frozen urine is mixed so that the previous temperature becomes uniform while being stirred. At this time, since the human waste comes into contact with the surface of the heat storage body 27, the heat of the heat storage body 27 is transferred from the surface to the frozen urine, thereby making it possible to accelerate the upper limit of the temperature of the entire Shobara. In addition, in the blower 50, when the fan 52 rotates, air from the outside flows through the heat exchange pipe 18.
When the air flows inside the heat exchanger vibe 18, part of the heat from the burner vibe 16 heats this air, turning it into warmed air and passing through the heat exchanger vibe 53.
It will tell you the direction. This warmed air passes through the inside of the drive pipe 2J through the ventilation holes 32.30, hits the ventilation holes 24, and then is blown out toward the bottom of the drying pot 14 through the communication holes 24.25. As mentioned above, this blown air is heated by the Kutu exchange vibrator 18, so it reaches a high temperature and comes into contact with the frozen urine, helping to dry the W urine, and causing the moisture to explode at an extremely high speed. It's something. In this way, the raw human waste is transferred to the drying pot 14.
The air inside the drying pot 14 containing moisture is guided by the return pipe 54 and flows into the outer box 11. The water vapor and air evaporated from the drying pot 14 contain urea, ammonia, etc., which are part of the components of the seat ring, and generate an extremely foul odor. However, when the air flows into the outer box 11, it is reheated to an extremely high temperature because the hot air from the burner 41 is transmitted inside the outer box 11, and is discharged from the discharge pipe 17. The air passing through the exhaust pipe 17 is first passed through a filter 43 in the catalyst box 40 to remove solid components and dust from the seat ring, and only the air component is transmitted to the next catalyst body 44. When air that is reheated and has a bad odor comes into contact with this catalyst body 44, the components of the bad odor are oxidized by the catalyst, thereby removing the odor components. Then, the air from which the bad odor has been removed is sucked by the fan 48 through the connecting pipe 45, and is discharged to the outside air from the diffusion pipe 8. Through the above series of operations, the seat ring in the drying pot 14 is heated from the inside and outside of the drying pot 14 by being heated from the outside and jetting hot air heated by heat exchange. Also,
Furthermore, due to the large surface area of the heat storage body 27 that absorbs heat, the moisture can be evaporated extremely quickly, and through these series of operations, the majority of the sewage in the drying pot 14 is removed. Moisture is ejected once, and fine solid components are collected by a filter 43. Since this operation can be repeated many times, there is no need to collect frozen urine into a tank, and the system can be operated for a long period of time. [Effects of the Invention] Since the present invention is constructed as described above, in the past, excreted N urine had to be reprocessed by suctioning it into a vacuum car, etc., but it is more hygienic by evaporating the water. Moreover, it can be processed without leaving any residue. Therefore, even buildings without sewage facilities can be used for a long period of time. In addition, a portion of the heat that heats the container containing the seat ring is recovered and the heat is blown into the container as hot air, resulting in high thermal efficiency and the ability to shorten the time it takes to evaporate moisture. .

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a temporary toilet showing an example in which the bed bundle drying device of the present invention is applied to a temporary toilet, Fig. 2 is a sectional view showing the internal structure of the bed tail processing device, and Fig. 3 is a stirring FIG. 4 is a plan view showing the state in which the blades are attached, and an explanatory diagram showing the state of the drying process. 11... Outer box, 12... Outer lid, 14... Drying pot,
[5... Inner lid, 16... Burner pipe, 17...
- Discharge pipe, 18... Heat exchange pipe, 21... Drive pipe, 26... Stirring blade, 27... Heat storage body, 4
1...Burner, 46...Exhaust device, 48...Fan, 50...Blower, 52...Fan, 53...
Communication pipe, 54... recursion pipe.

Claims (1)

[Claims] A heat-resistant container for storing human waste, an outer case that airtightly covers the container from the outside, a heating means for supplying hot air between the container and the outer case, and a heat exchange pipe wrapped around the outer periphery of the container. A communication pipe that communicates between one end of the heat exchange pipe and the inside of the container, a communication pipe that connects the inside of the container and the inside of the outer case, and a discharge means that exhausts air from the space between the container and the outer case. A human waste drying device comprising: