JPH0719732A - Garbage processing method and garbage drying and processing device - Google Patents

Abstract

PURPOSE:To enable garbage to be dried almost completely within a short period of time by drying the garbage in vacuum condition. CONSTITUTION:Garbage is fed into a feeding port 5 arranged at an upper part of a main body 1 of a container, a crusher machine 3 within the main body 1 of the container is rotated so as to crush the garbage. In this way, moisture content in the garbage is easily flowed out of it and the water content is discharged through a filter member 4 mounted below the crusher machine 3. In this way, moisture content in the garbage is reduced to a centain degree, then the feeding port 5 of the main body 1 of the container is closed by its lid, an opening or closing valve 32 placed on the down stream side of a water drain port 8 is closed and then its entire system is closed. After this operation, upon energization of a vacuum pump 20, the inside area of the main body 1 of the container is reduced in its pressure through a vacuum port 6 and the garbage is dried under a vacuum condition. With such an arrangement as above, it is possible to dry the garbage almost completely within a short period of time.

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 food waste from a kitchen. More specifically, it relates to a drying process of food waste, which comprises vacuum-drying food waste.

[0002]

2. Description of the Related Art The conventional method for drying food waste is to heat the food waste to evaporate the water content, and the processing equipment is a heating / evaporating device for that purpose, or the expansion of these devices and the accompanying food waste. It was a spreading device, a conveying device, etc. For example, as a heating means, an electric heating plate or the like is used for the purpose of fire prevention.

[0003]

However, in the above-mentioned prior art, the dry state is extremely incomplete, and there is a risk of decay and bad odor in the summer, and fire prevention must be taken into consideration.

[0004]

The method of treating food waste according to the present invention for solving the above-mentioned problems is characterized in that the food waste is vacuum-dried.

Further, it is characterized in that raw garbage is crushed, and the crushed raw garbage is roughly drained and then vacuum-dried by reducing the pressure in a sealed container.

[0006] Furthermore, the present invention is characterized in that raw garbage is crushed, and the crushed raw garbage is roughly drained, depressurized and heated in a sealed container, and further crushed in the depressurized container.

Further, the food waste drying treatment apparatus of the present invention includes a crusher rotatably installed and a filter member installed below the crusher, and the food waste introduction port and A container body having a vacuum port, a recovery port above the filter member, and a drain port below the filter member, a vacuum pump connected to the vacuum port of the container body, and the vacuum. An exhaust pipe connecting the pump and the drain pipe, a recovery chamber connected to the recovery port, a vacuum pump connected to the recovery chamber, an opening / closing valve provided downstream of the drain port, and the charging port are sealed. It is characterized by a lid.

Furthermore, a heating means is added to the container body in the above-mentioned food waste drying apparatus.

[0009]

According to the method of treating food waste of the present invention, the food waste is finely crushed or cut (sliced) so as to be easily vacuum-processed, and the food waste is enclosed in a sealed container and vacuum-treated here. If the vacuum pump evacuates the entire system inside the sealed container, the number of air molecules in the space will decrease, and the chances of collision between the water molecules that evaporate from the food waste inside the container and the air molecules will decrease, reducing the resistance and reducing the water inside the container. Evaporates faster. Latent heat of vaporization (heat of vaporization) is necessary for the evaporation of water, but latent heat of evaporation deprives water of heat,
The temperature of the water in the container drops rapidly. Vacuum drying reduces the pressure in the sealed container to a low pressure of 30 to 100 Torr,
It is a method of drying at ℃. Therefore, if the inside of the container is heated at the same time as the operation of the vacuum pump, the drying effect can be improved even if the degree of vacuum is low. Since heating is less expensive than vacuum processing in terms of both cost and equipment, it is more effective to apply heat processing than vacuum processing alone. That is, the evaporation rate is further accelerated, and the water in the container can be boiled rapidly even if the degree of vacuum is low. In this way, the garbage is dried to a water content of 1% or less in a short time, and the volume is significantly reduced and reduced as compared with the normal state. It also eliminates foul odors.

If the food waste is crushed before the vacuum treatment, the food waste can be roughly drained, so that the vacuum drying efficiency in the sealed container can be improved. Since this vacuum-dried food waste becomes brittle compared to the normal state, the volume can be further reduced if the crushing step is repeated here.

According to the apparatus for drying food waste of the present invention, after the food waste is put in through the input port provided above the container body,
Rotate the crusher in the container body to crush food waste. In this way, the water outflow from the garbage is facilitated, and the water is drained from the drain port through the filter member installed under the crusher. In this way, the water content of the food waste is reduced to some extent, the input port of the container body is closed, and the open / close valve downstream of the drain port is closed to seal the entire system. After that, when the vacuum pump is operated, the inside of the container main body is decompressed through the vacuum port, and the food waste is vacuum dried as described above, and at the same time, it shows brittleness. Therefore, if the crusher is rotated again, food waste such as bones can be easily crushed. If the vacuum pump connected to the recovery chamber (either the same as or different from the one connected to the vacuum port on the container body above) is activated again after releasing the depressurized state, it will dry. Garbage that has become crushed pieces can be collected in a net bag inside the collection chamber via the collection port.

Further, if a heating means such as a heater is added to the inside or outside of the container body of the above-mentioned food waste drying apparatus, the drying time can be shortened as described above, and the drying efficiency can be reduced. It can be easily increased.

[0013]

[Examples] 1 of the apparatus for drying food waste according to the present invention
An embodiment will be described in detail with reference to the drawing (FIG. 1).

In FIG. 1, 1 is a container body, 10 is a recovery chamber, and 20 is a vacuum pump. A flange 2 is provided on the lower part of the inner wall of the container body 1, and a crusher 3 is placed on the flange 2. A filter member 4 is arranged below the crusher 3. A raw garbage input port 5 and a vacuum port 6 connected to the vacuum pump 20 are opened above the container body 1, and further, above the filtering member 4, the raw garbage dried in a process described below. A recovery port 7 for recovering the water in the recovery chamber 10 and a drain port 8 for draining the moisture that has passed through the filter member 4 are opened below the filter member 4. A drain pipe 31 is connected to the drain port 8, and an opening / closing valve 32 is arranged in the drain pipe 31. A vacuum pump 20 is connected to the vacuum port 6 of the container body 1 via a connecting pipe 21. Further, a degassing pipe 22 is connected to the vacuum pump 20, and air and vaporized water vapor in the container body 1 sucked by the vacuum pump 20 when depressurizing the inside of the container body 1 are discharged to the outside through the degassing pipe 22. I am trying. The deaeration pipe 22 is attached to the drain pipe 31, for example, by the trap 2
It is connected through 3. The trap 23 is a prior art structure that uses residual water to shield the passage in the tube. A net bag 12 is removably attached to the mounting port 11 in the recovery chamber 10, a filter 13 is arranged below the net bag 12, and a vacuum is provided below the filter 13 via a connecting pipe 14. The pump 20 is connected. The vacuum pump connected below the recovery chamber 10 may be installed separately from the vacuum pump 20 for depressurizing the inside of the container body 1 as in the present embodiment. The container body 1 and the recovery chamber 10 are provided with a lid 9 and a lid 16 capable of respectively sealing the inlet 5 and the outlet 15 in order to enable depressurization.

A heater (heating means) 40 is provided on the outer wall of the container body 1 so as to heat the inside of the container body. However, the heating means 40 may be attached to the inner wall surface of the container body 1, or the container body 1
May be embedded in the wall thickness of the.

[0016] In a general household with about 5 family members, the amount of kitchen garbage generated per day is about 1 kg. Therefore, the garbage is usually processed once a day, for example, by operating the vacuum pump before going to bed, and then collecting it. Collect the crushed pieces of dried food waste in 10. Since the amount of this dried food waste is reduced to about 1/40, it is not necessary to collect and replace the net bag 12 for about 7 to 10 days.

Since bacteria are still alive even in the collected dried food waste, a small amount of commercially available fermenting bacteria is added, and
By leaving it in a separate container, it can be naturally fermented and aged and used as a compost for personal use.

[0018]

As described above, according to the method for vacuum-drying garbage of the present invention, it is possible to dry the garbage almost completely in a remarkably short time as compared with the conventional method. And the running cost for that is substantially the same as the conventional method. Further, according to the food waste vacuum drying apparatus of the present invention, since it does not occupy a large space, it can be connected to the drain outlet of the sink using a small space under the sink, for example, and the frequency of garbage collection It saves money and keeps the sink area clean at all times.

[Brief description of drawings]

FIG. 1 is an explanatory view showing one embodiment of a food waste drying apparatus according to the present invention.

[Explanation of symbols]

 1 Container Main Body 2 Flange 3 Crusher 4 Filtering Member 5 Input Port 6 Vacuum Port 7 Collection Port 8 Drainage Port 9 Lid 10 Collection Chamber 11 Mounting Port 12 Net Bag 13 Filter 14 Connection Pipe 15 Outlet Port 16 Lid 20 Vacuum Pump 21 Connection Pipe 22 Deaeration tube 23 Trap 31 Drain tube 32 Open / close valve 40 Heating means

Claims (5)

[Claims] 1. A method of treating food waste by vacuum-drying food waste. 2. A method for treating food waste, which comprises crushing the food waste, roughly draining the crushed food waste, and then vacuum-drying by depressurizing in a sealed container. 3. A method for treating food waste, which comprises crushing the food waste, draining the crushed food waste to a large extent, reducing the pressure in a sealed container and heating, and further crushing the food in the pressure reducing container. 4. A crusher rotatably installed and a filter member installed below the crusher are included, and a garbage input port and a vacuum port are collected above the filter member. A container body having a mouth and a drain port below the filter member, a vacuum pump connected to the vacuum port of the container body, and an exhaust pipe connecting the vacuum pump and the drain pipe. And a collection chamber connected to the collection port, a vacuum pump connected to the collection chamber, an opening / closing valve provided downstream of the drain port, and a lid for sealing the input port. Drying processing equipment. 5. The food waste drying treatment apparatus according to claim 4, wherein a heating means is added to the container body.