JP3767801B2 - Garbage disposal method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a garbage disposal method and apparatus for heating and drying garbage.
[0002]
[Prior art]
Recently, garbage generated from kitchens or the like contains a large amount of water and the like, and if the water and the like are removed, the amount can be reduced. Dried garbage can be discarded as normal combustible waste or reused as fertilizer.
[0003]
[Problems to be solved by the invention]
By the way, in the drying process of garbage, a large amount of oil and fat is vaporized during drying and flows to the radiator side, which is a cooling means, and solidifies in the radiator by cooling, thereby reducing the function of the radiator and generating steam generated in the treatment tank. There is a risk of hindering the cooling circulation. As a result, there is a possibility that the internal pressure in the treatment tank is increased and the drying process becomes difficult. It is very troublesome to remove the solidified fats and oils by washing or the like even from the structure of the radiator.
[0004]
Then, this invention makes it a subject to provide the garbage processing method and its apparatus which prevented the inconvenience by condensation of fats and oils.
[0005]
[Means for Solving the Problems]
The garbage treatment method of the present invention is a garbage treatment method in which steam generated from the garbage heated in the treatment tank is circulated through a cooling means, cooled and separated from condensed water, and then returned to the treatment tank. The heating means disposed adjacent to the cooling means generates heat, and the heat generated by the heating means causes the garbage to be heated above the oil dissolution temperature before, during or after the heat treatment of the garbage. It is characterized by heating. That is, the steam generated in the treatment tank contains oil and fat together with the moisture of the garbage, and when such steam flows to the cooling means and is cooled and condensed, the oil and fat is solidified. Therefore, by heating the cooling means to a temperature equal to or higher than the fat dissolving temperature , the solidified fat and oil can be softened and fluidized and easily discharged. In this case, the heating timing of the cooling means may be selected before, during or after the heat treatment of garbage, or may be used in combination.
[0006]
The garbage processing apparatus of the present invention is a treatment tank that accommodates and heats garbage, a cooling means that cools the steam generated in the treatment tank, and the steam generated in the treatment tank is guided to the cooling means, The cooling means is condensed by the cooling means and separated from the condensed water and then returned to the treatment tank, and is provided in the cooling means, and the cooling means is disposed before, during or after the heating treatment of the garbage. And a heating means for heating to a temperature equal to or higher than the oil / fat dissolution temperature . That is, the fat and oil in the steam generated from the garbage in the treatment tank by heating flows from the treatment tank to the cooling means through the circulation means, and is cooled and condensed. Therefore, if the cooling means is heated to a temperature equal to or higher than the fat dissolving temperature by the heating means, the solidified fat and oil can be softened and fluidized and easily discharged. In this case, the heating timing of the cooling means may be selected before, during or after the heat treatment of garbage, or may be used in combination.
[0007]
The garbage processing apparatus of the present invention comprises a treatment tank for containing garbage, a heating means for heating the garbage in the treatment tank, and a cooling means for cooling the steam generated in the treatment tank, The heating means is used as a heat source for heating the cooling means to a temperature equal to or higher than the oil dissolution temperature before, during or after the heat treatment of the waste. That is, the heat source for heating the cooling means or fat melting temperature can be used the heat of the heating means of the processing tank side, to soften the grease in the cooling means is fluidized, it is easily discharged it can.
[0008]
In the garbage processing apparatus of the present invention, the cooling means includes a heat radiating fan (50), and the heat radiating fan is stopped when the cooling means is heated. That is, the cooling means is provided with a heat radiating fan as the heat radiating means. By stopping the heat radiating fan, the heat radiating can be suppressed and heating of the cooling means can be promoted.
[0009]
In the garbage processing apparatus of the present invention, the cooling means is provided with a heat radiating fan, and when the cooling means is heated, the heat radiating fan is rotated to flow hot air to the cooling means. In other words, the cooling means is provided with a heat radiating fan as the heat radiating means. By rotating the heat radiating fan and flowing hot air, heating of the cooling means can be promoted.
[0010]
The garbage treatment method of the present invention is a garbage treatment method in which steam generated from the garbage heated in the treatment tank is circulated through a cooling means, cooled and separated from condensed water, and then returned to the treatment tank. And the cooling means is heated by controlling a circulation amount of the steam to the cooling means. That is, the heat of the steam can be used as a heat source to heat the cooling means, and the oil and fat can be discharged and discharged by fluidization.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 show a first embodiment of a garbage disposal method and apparatus according to the present invention, FIG. 1 shows a garbage disposal apparatus, and FIG. 2 shows a control apparatus thereof.
[0012]
For example, a container having a bottom-side semi-cylindrical shape is used as the treatment tank 4 for storing the garbage 2 to be dried, and a stirring impeller as a stirring means for stirring the garbage 2 is used in the treatment tank 4. A scraper 6 is provided. The scraper 6 is, for example, one in which stirring blades 12 are attached to the tips of a plurality of arms 10 projecting radially on the rotating shaft 8, and both ends of the rotating shaft 8 are provided on bearings 14 provided on the side surfaces of the processing tank 4. Is supported rotatably. A pulley 18 for receiving a rotational force from the stirring motor 16 is attached to the rotating shaft 8, and a drive chain 22 is suspended between the pulley 18 and the driving pulley 20 on the stirring motor 16 side. . That is, as shown by arrows A and B, the scraper 6 is provided with a rotation having a rotation pattern such as desired rotation, continuous rotation, intermittent rotation, and forward / reverse rotation, as indicated by arrows A and B. By the rotation of the scraper 6, the garbage 2 in the treatment tank 4 is stirred and pulverized. In this embodiment, the agitation motor 16 is used as the rotation drive means of the scraper 6. However, a drive means such as an engine may be used, and the rotation transmission means is replaced with the pulley 18 and the drive pulley 20 by using a sprocket wheel and chain. Alternatively, a gear mechanism or the like may be used.
[0013]
An inlet 24 for loading the garbage 2 into the processing tank 4 is formed on the upper side of the processing tank 4, and a door 26 for opening and closing the inlet 24 is attached by a hinge 28 so as to be opened and closed. It has been. That is, the door 26 can be opened and closed with the handle 30 and, in the closed state, the processing tank 4 is maintained in a sealed state by a sealing means such as packing (not shown).
[0014]
A heater 32 for heating the garbage 2 in the treatment tank 4 is installed as a first heating means on the bottom surface of the treatment tank 4 and a first temperature for detecting the heat generation temperature of the heater 32 is provided. A temperature sensor 34 is installed as detection means. In this embodiment, a heater 32 is installed along the curved surface of the processing tank 4. As the heating means, a burner or the like for burning fuel gas may be used. A temperature sensor 35 is attached to the outer wall of the processing tank 4 as second temperature detection means for detecting the processing temperature in the processing tank 4.
[0015]
A radiator 38 is installed as a cooling means or a condensing means for cooling and condensing the steam 36 generated in the treatment tank 4, and as a circulation means for circulating the steam 36 between the radiator 38 and the treatment tank 4. A circulation path 40 is provided, and the circulation path 40 includes an outward pipe 42 and a return pipe 44. That is, the fat and oil vaporized in the treatment tank 4 flows to the radiator 38 together with the steam 36. The radiator 38 includes a plurality of thin tubes 46 through which the steam 36 is divided and flows, and heat radiating fins 48 are attached to the thin tubes 46. The radiator 38 is provided with, for example, a heat dissipation fan 50 as heat dissipation means, and the heat dissipation fan 50 is driven by a motor 52 as drive means. Due to the flow of the cooling air C circulated by the rotation of the heat radiating fan 50, the heat radiation of the radiator 38 is promoted, and the steam 36 passing through the radiator 38 is radiated and cooled to generate condensed water 54. The oil and fat is solidified by the cooling and may stay in the narrow tube 46 of the radiator 38. Therefore, a heater 56 is installed as a second heating means for removing the oil and fat. This heater 56 can fluidize the oil and fat staying in the thin tube 46 of the radiator 38 and the like.
[0016]
In this embodiment, the radiator 38 is of a vertical type in which the heat radiating surface is in the horizontal direction, and the condensed water 54 generated by the cooling of the steam 36 is guided to the steam / water separator 58 provided on the bottom side thereof. A drain pipe 60 is connected to the air / water separator 58, and a U-shaped trap 62 is provided in the middle of the drain pipe 60 as an odor stopper.
[0017]
As a third temperature detecting means for detecting the steam temperature before cooling on the inlet side of the radiator 38 to which the outgoing pipe 42 is connected, a temperature sensor 64 for detecting the inlet temperature of the radiator 38 and a steam / water separator 58 are provided. A temperature sensor 66 is provided as a fourth temperature detecting means for detecting the steam temperature after cooling. A circulation fan 68 is attached to the return pipe 44 as a means for forcibly circulating the steam 36, and the circulation fan 68 is driven by a motor 70 as a drive means.
[0018]
A control device 74 is provided as a control means for performing rotation control of the agitating motor 16, driving of the heaters 32 and 56, and temperature control based on the operation command from the operation switch 72 and control information of the temperature sensors 34, 35, 64, 66, and the like. It has been. For example, as shown in FIG. 2, the control device 74 is provided with a calculation control unit 76 constituted by a microprocessor or the like. Input signals are applied from 35, 64 and 66, and the drive output output from the arithmetic control unit 76 is applied to the stirring motor 16, the motors 52 and 70, the heaters 32 and 56, and the like.
[0019]
Next, the garbage processing method and the operation of the apparatus will be described with reference to the flowchart shown in FIG.
[0020]
The first-stage routine (steps S1 to S2) is a routine showing the cleaning process of the radiator 38 before the heating process of the garbage 2, and the second-stage routine (steps S3 to S4) is the heating and drying process of the garbage 2. The routine shown and the third-stage routine (steps S5 to S6) are routines showing the cleaning process of the radiator 38 after the heating and drying process of the garbage 2.
[0021]
In step S1, when the operation switch 72 is turned on after the door 26 is opened and the garbage 2 is loaded into the processing tank 4, the radiator cleaning processing mode is executed. That is, the heater 56 is energized through the control device 74, and heating of the radiator 38 is started by the heater 56, and the process proceeds to step S2. That is, this heat treatment is performed continuously for a predetermined time. In such a heat treatment, if the oil and fat remains in the radiator 38, the oil and fat dissolved and fluidized by the heating is dripped onto the steam-water separator 58 in the same manner as the condensed water 54, and the drain pipe 60 is discharged.
[0022]
And when predetermined time passes, it will transfer to step S3 and the heat drying process of the garbage 2 will be started. In this process, the agitation motor 16 and the motors 52 and 70 are rotated, the heater 32 is energized, the garbage 2 in the treatment tank 4 is heated, and the scraper 6 is rotated to agitate the garbage 2 and pulverize by the agitation. Done. As the heating progresses, the steam 36 generated from the garbage 2 flows from the treatment tank 4 to the radiator 38 through the outgoing pipe 42 of the circulation path 40 and is cooled by heat radiation. Condensed water 54 generated by this cooling is separated from the gas component and dropped into the steam / water separator 58 and drained to the outside through the drain pipe 60. The vapor 36 separated from the condensed water 54 returns to the treatment tank 4 through the return pipe 44. However, since the volume decreases by the amount of condensation, the internal pressure of the treatment tank 4 is suppressed, and odor leakage from the treatment tank 4 occurs. It is prevented.
[0023]
In the garbage drying process, the inlet temperature T ₁ of the radiator 38 is detected by the temperature sensor 64, and the outlet temperature T ₂ is detected by the temperature sensor 66. These detected temperatures T ₁ and T ₂ change as the drying of the garbage 2 proceeds, and when the temperature difference ΔT (= T _{1 to} T ₂ ) between the detected temperatures T ₁ and T ₂ rises to a predetermined value, The drying of garbage 2 is completed. That is, when the moisture of the steam 36 decreases, the detected temperature T ₁ rises and the detected temperature T ₂ falls, and as a result, the temperature difference ΔT increases. Therefore, the comparison value Tm is set, and the temperature difference up to this comparison value Tm is set. When ΔT has reached, the drying of the garbage 2 is finished.
[0024]
Therefore, in step S4, it is determined whether or not the garbage drying is finished depending on whether or not the temperature difference ΔT has reached the comparison value Tm. The drying process is continued until the temperature difference ΔT has reached, and the temperature difference ΔT has reached the comparison value Tm. When the garbage drying ends. When the garbage drying is finished, the heater 32 is de-energized, the stirring motor 16 and the motors 52 and 70 are stopped, and the display 78 displays the completion of drying.
[0025]
After the garbage drying is finished, the process proceeds to step S5, and the radiator cleaning process mode is executed again. That is, the heater 56 is energized, and heating of the radiator 38 is started by the heater 56, and the process proceeds to step S6. That is, this heat treatment is continuously performed for a predetermined time. In such a heat treatment, if the oil and fat remains in the radiator 38 due to the steam 36 generated in the drying treatment, the oil and fat dissolved and fluidized by the heating is similar to the condensed water 54 in the air and water. It drops on the separation unit 58 and is discharged to the drain pipe 60.
[0026]
As described above, it is possible to eliminate the oil and fat evaporation caused by the drying treatment of the garbage 2 and the clogged state due to the solidification of the oil and fat in the radiator 38, and to prevent the function of the radiator 38 from being deteriorated. The efficiency of the drying process of the garbage 2 can be improved, and the maintenance and the cleaning process of the radiator 38 after the drying process become unnecessary, and the preparation before the drying process can be simplified.
[0027]
In this embodiment, the radiator heat treatment is performed before and after the garbage drying process. However, either or before the heat treatment of the garbage 2 or after the heat treatment may be selected. A radiator heat treatment may be interposed during the waste drying treatment. That is, if the garbage drying process is interrupted or the radiator heating process is performed in parallel with the garbage drying process, the oil and fat generated during the heating process of the garbage 2 can be fluidized and discharged. Therefore, the inconvenience due to the functional degradation of 38 can be prevented, and the efficiency of the garbage drying process can be improved.
[0028]
Next, FIG. 4 shows a second embodiment of the garbage processing method and apparatus of the present invention.
[0029]
In this embodiment, a heater 32 is used as a heat source as a heating means of the radiator 38. That is, a cover 80 as heat storage means is attached to the bottom surface side of the processing tank 4 so as to surround the heater 32 and lead from the cover 80 to the narrow tube 46 side of the radiator 38 through the heat conducting pipe 82. The heat conducting pipe 82 is provided with an on-off valve 84 and a heat conducting fan 86. The heat conducting fan 86 is driven by a motor 88. A temperature sensor 90 that detects the outside air temperature is installed in the vicinity of the radiator 38.
[0030]
A control device 74 is provided in the same manner as in the above embodiment, and the detected temperature of the temperature sensor 90 or the like is input to the control device 74 as control information, and the control output generated by the control device 74 is the motors 52, 70, It is added to the on-off valve 84 and the motor 88.
[0031]
In the garbage processing method and apparatus of this embodiment, the on-off valve 84 is opened before the garbage 2 is heated, during or after the heating, or at a time selected from these, and the heat conduction fan 86 is rotated. Then, the hot air 92 is obtained by the heat storage in the cover 80, and the hot air 92 is sent to the radiator 38, thereby heating the radiator 38, dissolving and fluidizing the remaining fats and oils, and Can be discharged. Other operations are the same as in the first embodiment.
[0032]
Then, the outside air temperature on the radiator 38 side is detected by the temperature sensor 90, and when the outside air temperature is high, the rotation speed of the heat radiating fan 50 is controlled according to the detected temperature, for example, the rotational speed of the heat radiating fan 50 is increased. It may be. The circulation amount of the steam 36 may be controlled by the detected temperature. Further, when the outside air temperature is low, the radiator 38 may be heated by operating the heat conducting fan 86.
[0033]
In the first and second embodiments, the heater 56 or the heater 32 is used for the heat treatment of the radiator 38, but the heat of the steam 36 may be used. That is, when the heat radiating fan 50 that is the heat radiating means of the radiator 38 is stopped, the temperature of the radiator 38 is increased by the heat of the steam 36. Accordingly, the rotation of the radiating fan 50 is stopped until the incoming temperature of the radiator 38 detected by the temperature sensor 64 rises to a predetermined temperature, for example, 60 ° C., and the oil and fat components are dissolved and flowed by heating due to the temperature rise of the radiator 38. And can be discharged to the drain pipe 60. After this processing, the internal pressure in the processing tank 4 can be stabilized by rotating the heat radiating fan 50, condensing the steam 36, and flowing the condensed water 54.
[0034]
When the temperature difference ΔT between the inlet side temperature and the outlet side temperature of the radiator 38 reaches a predetermined temperature, the heat radiating fan 50 is stopped again for a predetermined time, and the radiator 38 is heated by the heat of the steam 36 to Minutes can be dissolved and fluidized and removed outside the radiator 38.
[0035]
Also, during the drying process of the garbage, the heater 32, another heating source installed together with the heater 32 or installed in place of the heater 32 is intermittently driven at a predetermined time interval to dissolve the fat and oil during the garbage treatment. It is possible to prevent accumulation of oil and fat. In this embodiment, the heater 56 is disposed in the vicinity as a heating source for the radiator 38. However, a heating source such as a heater may be installed in the radiator 38 to heat the radiator 38 from the inside.
[0036]
Further, when the rotation of the circulation fan 68 is increased while the heat radiating fan 50 is stopped or rotating, a large amount of the steam 36 can flow to the radiator 38, and the radiator 38 can be heated by the heat of the steam 36. . Therefore, if the circulation amount of the steam 36 with respect to the radiator 38 is controlled by increasing or decreasing the rotation of the circulation fan 68, the radiator 38 can be heated using the heat of the steam 36 as a heat source, and the oil and fat content in the radiator 38 is similarly reduced. It can be dissolved or fluidized and removed from the radiator 38.
[0037]
In the first embodiment, a temperature sensor 90 for detecting the outside air temperature is installed on the radiator 38 side so as to control the heat radiation amount of the radiator 38, the circulation amount of the steam 36, and the heat generation control of the heaters 32 and 56. Also good. Regarding the heat generation control of these heaters 32 and 56, for example, if the heat generation amount is controlled according to the outside air temperature, such as increasing the heat generation amount when the outside air temperature is low and decreasing the heat generation amount when the outside air temperature is high, Efficient heat generation control can be performed.
[0038]
Similarly, if a heater is installed on the upstream side of the heat radiating fan 50 as a heating means for the radiator 38, and when the radiator 38 is heated, the heater and the heat radiating fan 50 are operated to supply hot air to the radiator 38. The oil and fat inside can be dissolved and fluidized and discharged out of the radiator 38.
[0039]
【The invention's effect】
As described above, according to the present invention, the following effects can be obtained.
a Even if oils and fats such as lard contained in garbage are solidified in the cooling means, the oil and fats are dissolved and fluidized by heating the cooling means so that they can be easily removed from the cooling means. It is possible to prevent a decrease in the function and a decrease in the service life.
b Heating of the cooling means may be performed before, during or after the heat treatment of the garbage, or may be a plurality of these periods. Can be speeded up.
c If the heat generated by the heating means of the treatment tank is used in combination with the heating of the cooling means, it is not necessary to use a special heating means, and the function of the cooling means can be prevented from lowering.
d Heating of the cooling means can be promoted by stopping the heat dissipating fan of the cooling means to suppress the heat radiation amount.
e Heating of the cooling means can be promoted by rotating the heat dissipating fan of the cooling means to allow hot air to flow.
f If the cooling means is heated by controlling the circulation amount of the steam flowing through the cooling means, the oil and fat can be dissolved and fluidized and discharged from the cooling means without using a special heat source.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of a garbage disposal method and apparatus according to the present invention.
FIG. 2 is a block diagram showing the control device.
FIG. 3 is a flowchart showing garbage drying processing and radiator heating control.
FIG. 4 is a view showing a second embodiment of the garbage disposal method and apparatus according to the present invention.
[Explanation of symbols]
2 Garbage 4 Treatment tank 32 Heater (heating means)
36 Steam 38 Radiator (cooling means)
40 Circuit (circulation means)
50 Heat dissipation fan 54 Condensed water 56 Heater (heating means)

Claims (6)

It is a garbage disposal method that circulates steam generated from garbage heated in the treatment tank to the cooling means, cools it and separates it from condensed water, and returns it to the treatment tank,
The heating means disposed adjacent to the cooling means generates heat, and the heat generated by the heating means heats the cooling means to a temperature equal to or higher than the oil dissolution temperature before, during or after the heat treatment of the garbage. The garbage disposal method characterized by the above-mentioned. A treatment tank for containing and heating garbage;
A cooling means for cooling the steam generated in the treatment tank;
A circulation means for guiding the steam generated in the treatment tank to the cooling means, condensing the cooling means by the cooling means, separating the condensed water, and returning the condensed water to the treatment tank;
A heating unit that is provided in the cooling unit, and heats the cooling unit to a temperature equal to or higher than an oil dissolution temperature before, during, or after the heat treatment of the garbage;
A garbage disposal apparatus characterized by comprising: A treatment tank for storing garbage;
Heating means for heating the garbage in the treatment tank;
Cooling means for cooling the steam generated in the treatment tank;
And a waste treatment apparatus using the heating means as a heat source that heats the cooling means to a temperature higher than the fat dissolution temperature before, during or after the heat treatment of the garbage.   4. The garbage processing apparatus according to claim 2, wherein the cooling means includes a heat radiating fan, and the heat radiating fan is stopped when the cooling means is heated.   4. The garbage processing apparatus according to claim 2, wherein the cooling means includes a heat radiating fan, and hot air is caused to flow through the cooling means by rotating the heat radiating fan when the cooling means is heated. It is a garbage disposal method that circulates steam generated from garbage heated in the treatment tank to the cooling means, cools it and separates it from condensed water, and returns it to the treatment tank,
A garbage disposal method, wherein the cooling means is heated by controlling a circulation amount of the steam to the cooling means.

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