JPH0780438A - Method and apparatus for treating raw garbage - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a novel method and apparatus for treating food waste that does not emit a foul odor. [Composition] A crushing means 3 for crushing the input garbage 2, 2, ..., A transfer means 4 for transferring the crushed garbage to the drying chamber 5, and a substantially sealed transferred garbage. A drying chamber for drying and a stirring means 6 for stirring raw garbage in the drying chamber are provided, and the raw garbage is finely divided by blowing hot air while stirring the raw garbage in the drying chamber 28, 28, ...
At the same time, the steam generated in the drying chamber is cooled by the cooling pipe 25 wound in a spiral shape, and deodorized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel method for treating garbage and an apparatus therefor. More specifically, it is an object of the present invention to provide a novel method for treating raw garbage and a device for the same, capable of discharging raw garbage as a fine substance without discharging a bad odor.

[0002]

2. Description of the Related Art A method and an apparatus for treating food waste by crushing the food waste, dehydrating, stirring and drying the food waste to obtain fine particles have been known.

FIG. 3 shows an example a of a conventional garbage processing apparatus.

[0004] The raw garbage treating apparatus a feeds the fed raw garbage under pressure, drains the first treating tank b, and the compressed raw garbage is heated and stirred in the presence of the fermenting bacteria in the second treating tank c.
And so on.

The first processing tank b is composed of an outer cylindrical body d and an inner cylindrical body e housed concentrically inside the outer cylindrical body d.
A drainage pipe f is connected to a lower part of one end of the inner cylindrical body e, and small holes g, g, ... Are formed on the outer peripheral surface of the inner cylindrical body e.

A charging pipe h having an upper end serving as a charging port is connected to one end of the inner cylindrical body e, and the charging pipe h penetrates the outer cylindrical body d and projects upward.

A discharge port is formed at the end of the inner cylindrical body e opposite to the end to which the input pipe h is connected, and a communication pipe i is connected to the discharge port.

Reference numeral j denotes a screw arranged in the inner cylinder e, and the rotation of the screw causes the garbage in the inner cylinder e to be transferred from the input pipe h side to the discharge port side. .

The second processing tank c is divided into a first fermentation chamber k, a second fermentation chamber l, and a third fermentation chamber m. These fermentation chambers k,
l and m are communicated with each other by partitioning plates n and n for partitioning them by notching upper parts.

One end of the first fermentation chamber k is the inner cylindrical body e.
The other end of the communication pipe i connected to is connected.

Inside the second treatment tank c, the fermentation chambers k, l,
A rotary shaft o is rotatably mounted through the inside of m.
At the location corresponding to each fermentation chamber k, l, m of the rotary shaft o,
A plurality of stirring rods p, p, ... Are provided radially.

Further, in the third fermentation chamber m, the fermentation chamber 1
An outlet is provided at an upper part of the side end opposite to the side end, and an outlet pipe q is connected to the outlet, and the outlet pipe q projects into the recovery chamber t.

Reference numeral s is a heater winding wound around the outer periphery of the second processing tank c.

However, in the case of processing raw garbage by such a raw garbage processing apparatus a, first, the raw garbage is put in the pipe h.
I will start from.

The charged garbage is transferred from the input pipe h side to the discharge port side by the screw j in the inner cylindrical body e of the first processing tank b.

At this time, since the inner diameter of the discharge port of the inner cylindrical body e is smaller than the inner diameter of the inner cylindrical body e, the raw dust sent by the screw j is compressed and included in the raw dust. The water that is being squeezed is squeezed out and drained.

The water squeezed out of the garbage is discharged from the small holes g, g, ... Of the inner cylinder e, received by the outer cylinder d, and then discharged from the discharge pipe f to the first treatment tank. b is discharged to the outside.

The compressed raw garbage is transferred from the outlet of the inner cylindrical body e to the first fermentation chamber k of the second processing tank c through the communication pipe i.

Further, the first fermentation chamber k is formed with a charging port (not shown) for charging a fermentation bacterium, and the fermentation bacterium is appropriately charged.

In each fermentation chamber k, l, m, a stirring rod p,
The raw dust is stirred and crushed by the rotation of p, ... At the same time, the raw dust is heated and dried by the heater windings s, s, ... Wound around the outer periphery of the second treatment tank c. It is designed to let you.

The raw garbage that has flowed into the first fermentation chamber k is
While gradually undergoing the tissue-decomposing action of the fermentation bacterium and the crushing by stirring, it gradually breaks up into pieces. When the first fermentation chamber k is filled with a certain amount of garbage, one of the garbage pushed up by the rotation of the stirring rods p, p, ... The part flows out into the second fermentation chamber 1 through the notch in the upper part of the partition plate n.

In the second fermentation chamber 1 and the third fermentation chamber m, the raw garbage flowing out from the preceding fermentation chamber k or l is further crushed and dried in the same manner as in the first fermentation chamber k.

By the time the third fermentation chamber m is reached, most of the garbage is pulverized, and when such pulverized material is pushed up by the rotation of the stirring rods p, p ... , Is discharged from the take-out port q, and is collected in the collecting container r placed inside the collecting chamber t.

On the other hand, the steam generated at the time of drying the garbage in the second treatment layer c and having a high temperature and containing odor fills the inside of the recovery chamber t through the outlet q, and the steam discharge pipe. It is discharged to the outside of the device a by u.

[0025]

However, in the above-mentioned garbage processing apparatus a, the garbage is treated in the first processing tank b.
When the raw garbage is compressed, the raw garbage is compressed, the water is squeezed out, and then the water is discharged from the discharge pipe f of the outer cylindrical body d. Therefore, the water discharged from the raw garbage processing device a gives off a bad odor. There was a problem.

When the garbage is heated and dried in the second treatment tank c, the steam generated during the drying is released from the steam discharge pipe u into the atmosphere, and the steam has a high temperature. There was a problem of giving off a strong odor.

[0027]

In order to solve the above-mentioned problems, the method for treating food waste of the present invention crushes the introduced food waste and transfers it to a drying chamber where the food waste is stored in the drying chamber. While stirring, the mixture is dried by blowing warm air into fine particles, and the fine particles are discharged to the outside one by one by filling the inside of the drying chamber with fine particles as appropriate. This is cooled, deodorized and discharged to the outside.

Further, the raw garbage processing apparatus of the present invention has a crushing means for crushing the input raw garbage, a transferring means for transferring the crushed raw garbage, and a drying for drying the transferred raw garbage which is substantially sealed. Chamber and a stirring means for stirring raw garbage in the drying chamber, a blowing means for blowing warm air into the drying chamber to dry the raw garbage, and cooling the steam generated in the drying chamber to drain water Means and deodorizing means for deodorizing the odor feeling contained in water vapor or waste water are provided.

[0029]

Therefore, according to the method and apparatus for treating raw garbage of the present invention, the raw garbage is stirred and warm air is blown to dry it, whereby the generated steam is cooled and deodorized. It is possible to discharge raw garbage as fine particles without discharging it.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the garbage disposal of the present invention will be described below with reference to the first embodiment shown in the drawings.

The garbage processing device 1 is provided with the garbage 2, 2, ...
. Crushing means 3 for crushing, and transfer means 4 for transferring the garbage 2, 2, ... Crushed by the crushing means 3 and garbage 2, 2 ,. A drying chamber 5 for drying the food, and raw garbage 2, 2, in the drying chamber 5.
.., a blowing means 7 for blowing warm air into the drying chamber 5, a cooling means 8 for cooling water vapor generated during drying of the garbage 2, 2 ,.

The crushing means 3 is arranged substantially at the center in the vertical direction of a crushing chamber 10 having a charging port 9 which is opened large upward, and two cylindrically-shaped parts which are appropriately spaced in the horizontal direction and closely arranged. The cutters 11 and 11 are set as one set and are arranged one above the other.

The upper cutters 11u and 11u are arranged so that their outer diameters are large and the distance between them is wide, and the lower cutters 11d and 11d are small in outer diameter and are arranged between them. The cutters 11, 11, ... Are arranged so that the distance between them becomes narrower, and these cutters 11, 11 ...
It is rotated in a direction to send the raw garbage 2, 2, ...

The raw garbage 2, 2, ... Injected from the input port 9 is crushed to an appropriate size by the upper cutters 11u, 11u and sent downward, and then the lower cutter 11d. , 11d, it is crushed into smaller pieces and sent downward.

The transfer means 4 is constructed by arranging a feed screw 13 rotatably in a cylindrical transfer space 12 extending substantially horizontally from the lower portion of the crushing chamber 10, crushed by the crushing means 3, and then crushed by the crushing chamber 10. Garbage 2, which fell to the bottom
2, ... are fed to the drying chamber 5 by the rotation of the feed screw 13.

The drying chamber 5 is formed in a substantially hermetically-sealed state, and is also composed of four chambers 14a, 14b, 14c, 14d, and each of the chambers 14, 14, ...
The upper portions of 5, 15, 15 are cut out to communicate with each other.

Further, the transfer space 12 of the transfer means 4 is communicated with the upper part of the first chamber 14a, so that the garbage 2, 2, ... It will flow into the first chamber 14a.

The stirring means 6 is arranged so as to penetrate through the chambers 14, 14, ...
6 and a stirring spatula 17, 17 attached to the chambers 14 of the rotary shaft 16 at positions corresponding to the chambers 14, 14 ,. The rotary shaft 16 is rotated by a drive mechanism described later. ,
A stirring spatula 17, 17, ... Is provided in each chamber 14, 14 ,.
It is designed to rotate inside.

Reference numeral 18 denotes an outlet formed in the upper portion of the fourth chamber 14d of the drying chamber 5, to which one end of an inverted U-shaped tube 19 arranged so as to open downward is connected. ing.

The tube connected to the outlet 18 has an inverted U-shape in this way because the fine particles 28, 28 ... This is because the accumulation keeps the pressure in the drying chamber 5 and prevents water vapor from being discharged through the outlet 8.

The blower means 7 blows air from the blower fan 20 and each of the chambers 14a, 14b, 14c and 14d.
And a heater 22 wound around the blower pipe 21.

The blower pipe 21 has its tip branched into four,
The tip of each branch pipe is located in each chamber 14a, 14b, 14c, 14d.
Are separately connected to the upper part of the room, and the air from the blower fan 20 is warmed by the heater 22 and then heated in each room 14.
The air is blown to a, 14b, 14c, and 14d.

The cooling means 8 includes the chambers 14, 14 of the drying chamber 5,
The steam discharge pipe 23 that guides the steam generated from the cooling tank 24, the cooling tank 24 in which the cooling water is stored, the cooling pipe 25 that is arranged in the cooling tank 24, and is spirally wound. The cooling pipe 25 is connected to the water vapor discharge pipe 23 at one end and the other end to the discharge pipe 26.

27 is raw garbage 2, 2, as will be described later.
It is a collection container for collecting the fine particles 28, 28, ...

29 is the above-mentioned cutter 11, 11, ...
It is a drive mechanism for driving the feed screw 13 and the rotary shaft 16, and is composed of one motor 30, a large number of power transmission means 31, 31 ,.

The driving force of the motor 30 is the cutter 11,
11, ..., may be constantly transmitted to the feed screw 13 and the rotary shaft 16, or may be selectively transmitted via a clutch or the like.

However, according to the raw garbage processing apparatus 1 as described above, the raw garbage 2, 2, ... Is processed into fine substances 28, 28 ,. The water vapor generated during drying is used as odorless effluent.

First, when the garbage 2, 2, ... Is charged from the charging port 9 of the crushing means 3, the upper cutters 11 u, 1
1u and lower cutters 11d, 11d for raw garbage 2,
2, ... are crushed to a predetermined size.

The crushed raw garbage 2, 2, ... Is transferred in the transfer space 12 by the screw 13 of the transfer means 4 arranged below it, and flows into the first chamber 14a of the drying chamber 5. It

On the other hand, the blowing fan 20 of the blowing means 7 blows air into each of the chambers 14, 14, ... And the air is heated by the heater 22.

The raw garbage 2, 2, ... Inflowed into the first chamber 14a is agitated by a stirring spatula 17 rotating in the first chamber 14a, and dried by the hot air. To be done. As a result, raw garbage 2, 2, ...
Its water is evaporated and then dried.

Raw garbage 2, 2, ... In the first chamber 14a.
When a certain amount is collected, a part of the raw garbage 2, 2, ..., which has been floated up by the stirring spatula 17 flows into the second chamber 14 communicating with the upper part.

Garbage 2, 2, which has flowed into the second chamber 14b
... is the garbage 2, 2, ... in the first chamber 14a
Is stirred and dried by a stirring spatula 17 in the same manner as
Moreover, when it accumulates to some extent, a part thereof flows into the third chamber 14c.

In this way, the garbage 2, 2, ... Is the first chamber 14a, the second chamber 14b, the third chamber 14c, the fourth chamber 14c.
, In that order, and the transfer means 4 sequentially feeds the garbage 2, 2, ... Into the drying chamber 5 so that each of the chambers 14, 14 ,. When the garbage 2, 2, ... Is filled, the next chamber 14,
It is done by overflowing to 14, ...

Further, in each of the chambers 14, 14, ..., Drying of the garbage 2, 2, ... Gradually progresses as described above, and in the fourth chamber 14d, the garbage 2, 2 ,. Most of the water is evaporated, so that the fine particles 28,
28, ... Are generated.

The fine objects 28, 28, ... Are the fourth
It flows out from the outlet 18 at the upper part of the chamber 14d and is collected in the collecting container 27 through the inverted U-shaped tube 19.

This is because the inside of the drying chamber 5 is substantially sealed and air is blown from the air blowing means 7, so that the inside of the drying chamber 5 is at a high pressure, whereby the fine particles 28, 28 ,.
.. is pushed up in the inverted U-shaped tube 19.

In addition, the garbage 2, 2, ...
Since the steam generated by the drying of the inside of the drying chamber 5 has a high pressure, it is guided to the cooling pipe 25 through the steam discharge pipe 23,
It is cooled by the cooling pipe 25 to form water drops, and the discharge pipe 26
Is discharged to the outside as wastewater.

The cooling water stored in the cooling tank 24 should be replaced each time when necessary, or the cooling effect should be maintained by a means such that tap water is constantly continuously injected.

At this time, the water vapor turns into garbage 2, 2, ...
Since it is generated by drying, the steam contains an odor, but when passing through the cooling pipe 25, the odor is adsorbed by water droplets and discharged to the outside, or the odor of the cooling pipe 25 is discharged. The odor feeling is largely removed from the air blown together with the drainage from the drainage discharge pipe 26 due to whether it adheres to the inner wall, etc., and both the drainage and the air are at a low temperature, so a odor is felt sensuously. Is almost gone.

The garbage processing device 1 can be used with or without the use of fermenting bacteria. For example, when treating food waste in the presence of a thermophilic and aerobic fermenting bacterium such as bacillus, it is desirable to keep the temperature of the drying room at about 60 ° C., and at this time, the raw material should be maintained for 10 to 20 hours. The dust is mechanically crushed and the tissue is decomposed by the fermentation bacterium, and the fine substance collected in the collecting container becomes a very fine powder like soil.

The volume of this powdery substance is several tenths of the volume of the raw garbage initially charged, and a large weight reduction effect can be obtained.

When the fermentation bacterium is not used, for example, when the treatment is carried out at a temperature of about 150 ° C., the raw garbage is recovered after several hours as a fine substance of about one tenth of the original volume of the raw garbage. To be done.

[0064]

As is apparent from the above description, the method of treating raw garbage of the present invention crushes the introduced raw garbage and then transfers it to the drying chamber where the raw garbage is heated while being stirred. Along with drying by blowing air to make a fine material, the fine material is sequentially discharged to the outside by being appropriately filled with a fine material in the drying chamber, while cooling the steam generated during the drying of the garbage, and It is characterized in that it is deodorized and discharged to the outside.

Further, the raw garbage processing apparatus of the present invention has a crushing means for crushing the input raw garbage, a transferring means for transferring the crushed raw garbage, and a drying process for drying the transferred raw garbage which is substantially sealed. An apparatus for treating raw garbage, comprising a chamber and a stirring means for agitating the raw garbage in the drying chamber, wherein an air blowing means for blowing warm air into the drying chamber to dry the raw garbage and a steam generated in the drying chamber are cooled. It is characterized in that it is provided with a cooling means for draining the water and a deodorizing means for deodorizing the mood contained in the water vapor or the waste water.

Therefore, according to the method and apparatus for treating raw garbage of the present invention, the raw garbage is stirred and hot air is blown to dry it, whereby the generated steam is cooled and deodorized. It is possible to discharge raw garbage as fine particles without discharging it.

In the above embodiment, the cooling means and the deodorizing means are spirally wound cooling tubes, and the cooling tubes have a cooling action and a deodorizing action, but the present invention is not limited to this.
The cooling action and the deodorizing action may be taken by separate members. In such a case, it is conceivable that the cooling action is performed by the radiator and the deodorizing action is performed by the filter made of a porous member or the like.

In addition, the specific structures and shapes of the respective parts shown in the above-mentioned embodiments are merely examples of the embodiment when the present invention is carried out. The range should not be construed as limiting.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing an example of the implementation of the garbage disposal of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a schematic cross-sectional view showing an example of a conventional garbage processing device.

[Explanation of symbols]

 1 Garbage Disposal Equipment 2 Garbage 3 Crushing Means 4 Transfer Means 5 Drying Room 6 Stirring Means 7 Blower Means 8 Cooling Means 25 Cooling Pipes (Deodorizing Means) 28 Fine Materials

Claims (2)

[Claims] 1. After crushing the thrown food waste, it is transferred to a drying chamber, and the food waste is dried by blowing warm air in the drying chamber while stirring to make it into a fine substance and the fine substance. Is discharged to the outside sequentially by being appropriately filled with fine particles, while the steam generated during drying of the garbage is cooled, and deodorized and discharged to the outside. . 2. A crushing means for crushing the input raw garbage, a transferring means for transferring the crushed raw garbage, a drying chamber for drying the transported raw garbage which is substantially sealed, and the raw garbage in the drying chamber. A garbage disposal device having a stirring means for stirring, wherein the blowing means blows warm air into the drying chamber to dry the garbage, and a cooling means for cooling the steam generated in the drying chamber to drain it. And a deodorizing means for deodorizing the mood contained in water vapor or waste water.