JP2002355634A - Garbage treatment method and apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a garbage treatment method and apparatus by which troubles by coagulation of fats and oils are prevented. SOLUTION: The garbage treatment method and apparatus comprises circulating steam (36) generated from garbage (2) heated in a treatment tank (4) to a cooling means (a radiator 38) and cooling and separating the steam from the condensate water (54) and then turning it back to the treatment tank and before, during or after the heating treatment of the garbage, the cooling means is heated by heating means (a heater 56 or a heater 32) or the steam (36) and consequently, the fats and oils remaining in the cooling means can be dissolved and fluidized to be discharged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for treating garbage for heating and drying garbage.

[0002]

2. Description of the Related Art Recently, garbage generated from kitchens and the like contains a large amount of water and the like, and if the water and the like are removed, the amount of the garbage can be reduced. The dried garbage can be discarded as normal combustible garbage or reused such as fertilizer.

[0003]

By the way, in the process of drying garbage, a large amount of fats and oils evaporates during drying and flows to the radiator side as cooling means, and solidifies in the radiator by cooling. This may hinder cooling circulation of the steam generated in the processing tank. As a result, the internal pressure in the processing tank may be increased, making the drying process difficult. It is very troublesome to remove the solidified fats and oils by washing or the like even from the structure of the radiator.

Accordingly, an object of the present invention is to provide a method and an apparatus for treating garbage in which inconvenience due to condensation of fats and oils is prevented.

[0005]

The garbage disposal method of the present invention circulates steam (36) generated from garbage (2) heated in a treatment tank (4) to cooling means (radiator 38). A garbage disposal method for cooling and separating the condensed water (54) and returning the condensed water to the treatment tank, wherein the refuse is heated before, during or after the garbage is heated. It is characterized by. That is, the steam generated in the treatment tank contains fats and oils together with the moisture of the garbage, and when such steam flows through the cooling means and is cooled and condensed, the fats and oils are solidified. Therefore, by heating the cooling means, the solidified fat and oil is softened and fluidized, and can be easily discharged. in this case,
The heating time of the cooling means may be selected before, during or after the heat treatment of the garbage, or may be used in combination.

The garbage disposal apparatus of the present invention provides a garbage (2)
Tank (4) for containing and heating the water, and cooling means (radiator 3) for cooling steam (36) generated in the processing tank.
8) and a circulating means (circulation path 40) for guiding the steam generated in the processing tank to the cooling means, condensing the vapor in the cooling means, separating the condensed water (54), and returning the condensed water (54) to the processing tank.
And a heating means (heater 56) for heating the cooling means before, during or after the heat treatment of the garbage. That is, the oil and fat components in the steam generated from the garbage in the processing tank by heating flows from the processing tank to the cooling means through the circulating means, and is cooled and condensed. Therefore, if the cooling means is heated by the heating means,
The solidified fats and oils are softened and fluidized, and can be easily discharged. In this case, the heating time of the cooling means may be selected before, during or after the heat treatment of the garbage, or may be used in combination.

The garbage disposal apparatus of the present invention provides garbage (2)
, A heating means (heater 32) for heating the garbage in the processing tank, and a cooling means (radiator 38) for cooling steam generated in the processing tank. It is characterized in that the heating means is used as a heat source for heating the cooling means before, during or after the heat treatment of the refuse. That is, the heat of the heating means on the processing tank side can be used as the heat source for heating the cooling means, and the oil and fat in the cooling means can be softened and fluidized, and easily discharged.

In the garbage disposal apparatus of the present invention, the cooling means is provided with a radiating fan (50), and the radiating fan is stopped when the cooling means is heated.
That is, the cooling means is provided with a heat radiating fan as a heat radiating means. By stopping the heat radiating fan, heat radiation can be suppressed and heating of the cooling means can be promoted.

In the garbage disposal apparatus of the present invention, the cooling means is provided with a radiating fan, and when the cooling means is heated, the 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 a heat radiating means. By rotating the heat radiating fan and flowing hot air, the heating of the cooling means can be promoted.

[0010] In the method for treating garbage according to the present invention, steam generated from garbage heated in the treatment tank is circulated through cooling means to be cooled and separated from condensed water, and then returned to the treatment tank. A processing method, wherein the cooling means is heated by controlling a circulation amount of the steam to the cooling means. That is, the cooling means can be heated by using the heat of the steam as a heat source, and the oil and fat can be dissolved and discharged by fluidization.

[0011]

1 and 2 show a first embodiment of a garbage processing method and apparatus according to the present invention. FIG. 1 shows a garbage processing apparatus, and FIG. 2 shows a control apparatus thereof.

For example, a container having a semi-cylindrical bottom surface is used as the processing tank 4 for storing the garbage 2 to be dried. The processing tank 4 has a stirring means for stirring the garbage 2. A scraper 6, which is a stirring impeller, is provided. The scraper 6 has, for example, a stirring blade 12 attached to the tip of a plurality of arms 10 protruding radially from the rotating shaft 8. Both ends of the rotating shaft 8 are bearings 14 provided on the side surface of the processing tank 4. It is rotatably supported by. 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 a driving pulley 20 on the stirring motor 16 side. . That is, as shown by arrows A and B, a rotation having a desired rotation pattern, continuous rotation, intermittent rotation, forward / reverse rotation, or the like is applied to the scraper 6 by the stirring motor 16. By the rotation of the scraper 6, the garbage 2 in the processing tank 4 is stirred and crushed. In this embodiment, the stirring motor 16 is used as the rotation driving means of the scraper 6, but a driving means such as an engine may be used. Instead of the pulley 18 and the driving pulley 20, the sprocket wheel and the chain may be used as the rotation transmitting means. Alternatively, a gear mechanism or the like may be used.

An input port 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 input port 24 is provided with a hinge 2.
It is attached to be able to open and close at 8. That is, the door 26 can be opened and closed by holding the handle 30, and in the closed state, the processing tank 4 is maintained in a sealed state by sealing means such as packing (not shown).

Further, a heater 32 for heating the garbage 2 in the processing tank 4 is provided as a first heating means on the bottom of the processing tank 4, and a heater 32 for detecting the heat generation temperature of the heater 32 is provided. A temperature sensor 34 is provided as one temperature detecting means. In this embodiment, a heater 32 is provided 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. Further, a temperature sensor 35 is attached to an outer wall of the processing tank 4 as a second temperature detecting means for detecting a processing temperature in the processing tank 4.

A radiator 38 is provided as cooling means or condensing means for cooling and condensing the steam 36 generated in the processing tank 4, and a radiator 38 for circulating the steam 36 between the radiator 38 and the processing tank 4. A circulation path 40 is provided as circulation means.
And a return pipe 44. That is, the oil and fat vaporized in the processing tank 4 flows to the radiator 38 together with the steam 36. The radiator 38 includes a plurality of small tubes 46 through which the steam 36 is diverted and flows, and a radiation fin 48 is attached to the small tubes 46. The radiator 38 is provided with, for example, a heat radiating fan 50 as a heat radiating means.
Driven by Due to the flow of the cooling air C flowing by the rotation of the heat radiating fan 50, 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, but the oils and fats in the steam 36 are solidified by the cooling and may stay in the narrow tube 46 of the radiator 38. Therefore, a heater 56 is provided as a second heating means for removing the fat. The heater 56 makes it possible to fluidize oil and fat remaining in the thin tube 46 and the like of the radiator 38.

In this embodiment, the radiator 38 is of a vertical type having a radiating surface in a horizontal direction, and condensed water 54 generated by cooling the steam 36 is supplied to a steam-water separating portion 58 provided on the bottom surface side. Be guided. A drain pipe 60 is connected to the steam separator 58, and a U-shaped trap 62 is provided in the middle of the drain pipe 60 as an odor control.

Radiator 38 to which forward pipe 42 is connected
As the third temperature detecting means for detecting the steam temperature before cooling on the inlet side, a temperature sensor 64 for detecting the inlet side temperature of the radiator 38, and the steam / water separator 58 for detecting the steam temperature after cooling. A temperature sensor 66 is provided as the temperature detecting means 4. Further, a circulation fan 68 is attached to the return pipe 44 as means for forcibly circulating the steam 36,
The circulation fan 68 is driven by a motor 70 as a driving unit.

A control device as a control means for controlling the rotation of the stirring motor 16 and the driving and temperature control of the heaters 32 and 56 based on the operation command from the operation switch 72 and the control information of the temperature sensors 34, 35, 64 and 66. 74 are provided. As shown in FIG. 2, for example, the control device 74 includes an arithmetic control unit 76 including a microprocessor and the like. The arithmetic control unit 76 includes an operation switch 72 for instructing operation, the temperature sensor 34, 35, 6
4 and 66, and the drive output output from the arithmetic and control unit 76 is
6, motors 52, 70, heaters 32, 56, etc.

Next, the operation of the garbage disposal method and the apparatus will be described with reference to the flowchart shown in FIG.

The first stage routine (steps S1 to S
2) is a routine showing a cleaning process of the radiator 38 before the heat treatment of the garbage 2, a second stage routine (steps S3 to S4) is a routine showing a heat drying process of the garbage 2, and a third stage routine (steps S3 to S4). Steps S5 to S6)
Is a routine showing a cleaning process of the radiator 38 after the heating and drying process of the garbage 2.

In step S1, the door 26 is opened, the garbage 2 is loaded into the processing tank 4, and then the operation switch 72 is turned on to execute the radiator cleaning mode. That is, the heater 56 is energized through the control device 74, the heater 56 starts heating the radiator 38, and the process proceeds to step S2. That is, this heat treatment is continuously performed for a predetermined time. In such a heat treatment, if fats and oils remain inside the radiator 38,
The oils and fats dissolved and fluidized by the heating are condensed water 54
In the same manner as described above, the liquid is dropped on the steam-water separation unit 58 and discharged to the drain pipe 60.

When the predetermined time has elapsed, the process proceeds to step S3, and the heating and drying process of the garbage 2 is started.
In this process, the stirring motor 16, the motors 52 and 70 are rotated, and the heater 32 is energized to heat the garbage 2 in the treatment tank 4 and rotate the scraper 6 to stir the garbage 2 and pulverize by the stirring. Done. Heating proceeds, and steam 36 generated from the garbage 2 flows from the treatment tank 4 to the radiator 38 through the outward pipe 42 of the circulation path 40,
Cooled by heat radiation. The condensed water 54 generated by this cooling is separated from the gaseous component, and is dropped onto the gas-water separation unit 58,
The water is drained to the outside through the drain pipe 60. This condensed water 54
The vapor 36 separated from the wastewater returns to the processing tank 4 through the return pipe 44. However, since the volume is reduced by the condensed amount, the internal pressure of the processing tank 4 is suppressed, and odor leakage from the processing tank 4 is prevented. .

In this garbage drying process, a radiator
38 inlet temperature T₁Is detected by the temperature sensor 64.
And its outlet temperature T_TwoIs determined by the temperature sensor 66
Is detected. These detected temperatures T₁, T_TwoIs garbage 2
Changes as drying proceeds, and the detection temperature T₁, T_Two
Temperature difference ΔT (= T₁~ T_Two) Has risen to the specified value
The drying of the garbage 2 is completed. That is, the moisture of the steam 36
Decreases, the detected temperature T ₁Rises and the detected temperature T_TwoBut
As a result, the temperature difference ΔT increases.
Set the value Tm, and the temperature difference ΔT reaches this comparison value Tm
Then, the drying of the garbage 2 is completed.

Therefore, in step S4, it is determined whether or not the garbage drying is completed based on whether or not the temperature difference ΔT has reached the comparison value Tm, and the drying process is continued until the temperature difference reaches the comparison value Tm. When it reaches, the garbage drying is finished. When the garbage drying is completed, the heater 32 is de-energized, the stirring motor 16 and the motors 52 and 70 are stopped, and the display 78 indicates that drying is completed.

After the drying of the garbage, the process proceeds to step S5, and the radiator cleaning mode is executed again. That is, the heater 56 is energized, and the heater 56 starts heating the radiator 38.
Move to That is, this heat treatment is continuously performed for a predetermined time. In such a heating process, if fats and oils remain inside the radiator 38 due to the steam 36 generated in the drying process, the fats and oils dissolved and fluidized by the heating are converted into steam and water like the condensed water 54. Dropping on the separation unit 58,
It is discharged to the drain pipe 60.

As described above, it is possible to eliminate the oil and fat evaporation caused by the drying process of the garbage 2 and the clogging state due to the solidification of the oil and fat in the radiator 38, thereby preventing the function of the radiator 38 from deteriorating. At the same time, the efficiency of the drying process of the garbage 2 can be improved, the maintenance and cleaning of the radiator 38 after the drying process are not required, and the preparation before the drying process can be simplified.

In this embodiment, the radiator heating process is performed before and after the garbage drying process. However, either one of the radiator heating process before and after the garbage 2 heating process may be selected. A radiator heating process may be interposed in the course of the garbage drying process. That is, if the garbage drying process is interrupted or a radiator heating process is performed in parallel with the garbage drying process, the oils and fats generated during the heating process of the garbage 2 can be fluidized and discharged, and the radiator can be discharged. 38 can be prevented from being inconvenienced by the reduced function, and the efficiency of the garbage drying process can be increased.

FIG. 4 shows a second embodiment of the garbage disposal method and apparatus according to the present invention.

In this embodiment, the heater 32 is used as a heat source as a heating means for the radiator 38. That is, a cover 80 as heat storage means is attached to the bottom surface side of the processing tank 4 to surround the heater 32, and the heater 32 is guided from the cover 80 to the thin tube 46 side of the radiator 38 via the heat conducting pipe 82. The heat guide pipe 82 is provided with an on-off valve 84 and a heat guide fan 86.
The heat guide fan 86 is driven by a motor 88. Further, a temperature sensor 90 for detecting an outside air temperature is provided near the radiator 38.

A control device 74 is provided in the same manner as in the above-described embodiment. The control device 74 receives a temperature detected by a temperature sensor 90 or the like as control information, and outputs a control output generated by the control device 74 to the motor 52. , 70, on-off valve 84, motor 88 and the like.

In the garbage disposal method and the apparatus according to this embodiment, the on-off valve 84 is provided before, during or after the heat treatment of the garbage 2 or at a time selected from these.
Is opened, and the heat conduction fan 86 is rotated, 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 and dissolving the remaining oils and fats. It can be fluidized and discharged to the drain pipe 60. Other operations are the same as in the first embodiment.

The outside air temperature on the radiator 38 side is detected by a temperature sensor 90. If the outside air temperature is high, the rotation speed of the radiator fan 50 is increased in accordance with the detected temperature, such as by increasing the rotation speed of the radiator fan 50. May be performed. The circulation amount of the steam 36 may be controlled based on the detected temperature. When the outside air temperature is low, the heat conduction fan 86
May be operated to heat the radiator 38.

In the first and second embodiments, the heater 56 or the heater 32 is used for heating the radiator 38. However, the heat of the steam 36 may be used. That is, when the heat radiating fan 50 as the heat radiating means of the radiator 38 is stopped, the temperature of the radiator 38 rises due to the heat of the steam 36. Therefore, the rotation of the heat radiating fan 50 is stopped until the inlet 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 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 radiation fan 50
Is rotated, the vapor 36 is condensed, and the condensed water 54 flows, whereby the internal pressure in the processing tank 4 can be stabilized.

When the temperature difference ΔT between the inlet side temperature and the outlet side temperature of the radiator 38 reaches a predetermined temperature,
The radiator fan 50 is stopped for a predetermined time, and the radiator 38 is heated by the heat of the steam 36 to dissolve and fluidize the fats and oils and remove the fats and oils from the radiator 38.

In addition, the heater 32,
Intermittently driving other heating sources installed together with the heater 32 or installed in place of the heater 32 at predetermined time intervals,
The fats and oils during garbage disposal may be dissolved and discharged to prevent accumulation of the fats and oils. In this embodiment, the heater 56 is disposed near the radiator 38 as a heating source. However, a heating source such as a heater may be provided in the radiator 38 to heat the radiator 38 from the inside.

Further, when the rotation of the circulation fan 68 is increased while the heat radiation fan 50 is stopped or in a rotating state, a large amount of steam 36 can flow to the radiator 38,
The radiator 38 can be heated by the heat of the radiator 38. Therefore, if the amount of circulation 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. It can be dissolved or fluidized and removed from the radiator 38.

In the first embodiment, the radiator 3
A temperature sensor 90 for detecting the outside air temperature may be provided on the side 8 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. Regarding the heat generation control of the heaters 32 and 56, if the heat generation amount is controlled according to the outside air temperature, for example, the heat generation amount is high when the outside air temperature is low, and the heat generation amount is low when the outside air temperature is high. Efficient heat generation control can be performed.

Further, a heater is provided as a heating means for the radiator 38 on the upstream side of the radiator fan 50, and the radiator 3
When the heater 8 and the radiator fan 50 are operated to supply hot air to the radiator 38 at the time of heating, the oil and fat in the radiator 38 can be similarly dissolved and fluidized and discharged out of the radiator 38.

[0039]

As described above, according to the present invention,
The following effects can be obtained. a Even if fats and oils such as lard contained in garbage solidify in the cooling means, the fats and oils are dissolved and fluidized by heating the cooling means, so that the fats and oils can be easily removed from the cooling means, Function can be prevented, and the life can be prevented from being shortened. b The heating of the cooling means may be before the heat treatment of the garbage, during the heat treatment or after the heat treatment, or may be a plurality of these times, by preventing the function of the cooling means from deteriorating,
It is possible to speed up the garbage drying process. 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 radiating fan of the cooling means and suppressing the heat radiation amount. e Heating of the cooling means can be promoted by rotating the heat radiating fan of the cooling means and passing hot air through. f If the cooling means is heated by controlling the circulation amount of the steam flowing to the cooling means, the fats and oils can be dissolved and fluidized from the cooling means and discharged without using a special heat source.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of a garbage processing method and apparatus according to the present invention.

FIG. 2 is a block diagram showing the control device.

FIG. 3 is a flowchart showing a garbage drying process and radiator heating control.

FIG. 4 is a view showing a second embodiment of the garbage disposal method and the apparatus thereof according to the present invention.

[Explanation of symbols]

 2 Garbage 4 Processing tank 32 Heater (heating means) 36 Steam 38 Radiator (cooling means) 40 Circulation path (circulating means) 50 Radiation fan 54 Condensed water 56 Heater (heating means)

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takanori Mochizuki 201 Nishi-Kashiwara Nitta, Fuji City, Shizuoka Prefecture F-term (reference) 4T004 AA03 BA04 CA15 CA22 CA32 CA42 CB28 CB32 CB34 CB44 DA01 DA02 DA06 DA11 DA13

Claims (6)

[Claims] 1. A method for treating garbage, in which steam generated from garbage heated in the treatment tank is circulated through cooling means to be cooled and separated from condensed water, and then returned to the treatment tank. A method of treating garbage, wherein the cooling means is heated before, during or after the heat treatment of the garbage. 2. A processing tank for storing and heating garbage, cooling means for cooling steam generated in the processing tank, and guiding the steam generated in the processing tank to the cooling means.
A circulating unit that condenses with the cooling unit and returns to the treatment tank after being separated from the condensed water, and a heating unit that heats the cooling unit before, during, or after the heat treatment of the garbage. A garbage disposal device comprising: 3. A processing tank for accommodating garbage, heating means for heating the garbage in the processing tank, and cooling means for cooling steam generated in the processing tank, and heating the garbage. A garbage disposal apparatus, wherein the heating means is used as a heat source for heating the cooling means before, during or after the heat treatment. 4. The garbage disposal apparatus according to claim 2, wherein the cooling means is provided with a radiating fan, and the radiating fan is stopped when the cooling means is heated. 5. The cooling device according to claim 2, further comprising a heat radiating fan provided in said cooling means, and rotating said heat radiating fan to flow hot air to said cooling means when said cooling means is heated. Waste treatment equipment. 6. A method for treating garbage, wherein steam generated from garbage heated in the treatment tank is circulated through cooling means to be cooled and separated from condensed water, and then returned to the treatment tank. A garbage disposal method, wherein the amount of steam circulated to a cooling unit is controlled to heat the cooling unit.