JPH08276171A - Garbage treatment machine - Google Patents

Abstract

PURPOSE: To prevent such a phenomenon that an offensive smell becomes strong or a stirring motor comes in an overload state because a culture base material becomes viscous with the lapse of a use time, in a garbage treatment machine wherein the culture base material and aerobic bacteria are charged in a treatment tank to decompose garbage, by mixing a water absorbent with the culture base material. CONSTITUTION: In the garbage treatment machine wherein a culture base material 3 and aerobic bacteria are charged in a treatment tank 1 having stirring blades and a ventilator and garbage is charged to be stirred together with them to be decomposed by the action of aerobic bacteria to be reduced in vol., a water absorbent is mixed with the culture base material. As the water absorbent, a highly water absorbable resin polymer obtained by forming a water-soluble resin into a three-dimensional structure, for example, an acrylic polymer such as a crosslinked polyacrylate or a crosslinked starch/acrylate graft copolymer is used in a powdery form. By this constitution, even when an operation time advances, the moisture content of the culture base material is suppressed low and an aerobic state is kept over a long period of time, and it is prevented that a stirring motor 5 becomes an overload state and good fermentative decomposition is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, a kitchen waste disposal machine (hereinafter referred to as kitchen waste processing) of a system in which kitchen garbage (hereinafter referred to as kitchen garbage) generated in a kitchen of a general household is decomposed by aerobic bacteria to reduce the weight. Machine)).

[0002]

2. Description of the Related Art A technique for decomposing food waste by utilizing aerobic bacteria and reducing the amount thereof is disclosed in, for example, Japanese Patent Laid-Open No. 4084/1992.

In this food waste disposing machine, a culture substrate (herein referred to as a microbial implantation agent) is put in a processing tank having a stirring blade and a ventilation device, and the crushed food waste is put into the processing tank through a shredder. , A method of stirring a culture substrate and food waste is shown.

[0004]

However, in the above-mentioned food waste disposer, the culture substrate is worn out, becomes sharper and smaller, and has less voids as time passes.

In addition, since minute earth-like organic substances formed by decomposing food waste are clogged in the voids, air retention and aeration are deteriorated.

[0006] Further, the evaporation of the internal water also worsens, the water content increases, and it becomes sticky and sticky, or it becomes clumped, which makes it unsuitable for the growth of aerobic bacteria. Instead, the anaerobic bacteria proliferate. It becomes a so-called spoiled state, and a bad smell comes out.

Furthermore, the torque required to rotate the stirring blade is significantly increased.

For this reason, the motor for driving the agitating blade and the transmission mechanism section are overloaded, and there is a drawback that the failure occurs relatively early.

An object of the present invention is to solve the above-mentioned drawbacks of the prior art.

[0010]

The feature of the present invention is that a culture substrate and aerobic bacteria are put in a treatment tank having a stirrer and a ventilator, and garbage is put in and stirred together. There is provided a garbage treating machine for decomposing and reducing the amount of garbage by the action of aerobic bacteria, wherein the culture substrate contains a water absorbing agent.

[0011]

EFFECTS OF THE INVENTION According to the present invention, in a food waste disposer using a culture substrate such as sawdust and aerobic bacteria, the water content of the culture substrate is suppressed to a low level even when the operating time is long, and the aerobic condition is maintained. It can be maintained for a long period of time to obtain good fermentation decomposition.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the entire structure for explaining the principle of the food waste processing machine of the present invention, FIG. 2 is a vertical sectional view of FIG. 1, and FIG. 3 is a sectional view taken along line AA of FIG. .

Reference numeral 1 denotes a food waste treatment tank having a stirring blade 2 in the center, and a culture substrate 3 is contained therein.

The culture substrate 3 is made of sawdust, rice husk, etc., whose main component is a fibrin which is difficult to decompose such as lignin, and each grain is porous, has water absorption and voids, and has a complicated grain shape. Large voids are formed between the particles.

The rotating shaft 4 of the stirring blade 2 is rotated by a driving motor 5 via a transmission mechanism 6 such as a chain or a belt.

A fan 10 for ventilation is provided on the upper portion of the processing tank 1.
An intake port 11 and an exhaust port 12 are provided. Fan 1
By turning 0, fresh air is sucked into the processing tank through the intake port 11, and the gas in the processing tank is discharged to the outside of the machine through the exhaust port 12.

A filter is attached to each of the intake port 11 and the exhaust port 12.

A discharge port 15 for the contents is provided at the bottom of the processing tank 1 and is normally shielded by a pull-out shutter 17 having a shutter 16.

When the hand is put on 16 and the shutter 17 is pulled out, the contents of the processing tank 1 are discharged from the discharge port 15 to the discharge path 1.
Since it falls to 8, you can take it out of the machine just by scratching it.

Reference numeral 20 denotes a raw garbage input port to the processing tank 1, which is covered with an outer lid 21.

A door switch (not shown) is provided on the outer lid 21.
The door switch is opened when the outer lid 21 is opened to a certain angle, the power of the motor 5 is cut off, and the stirring blade 2 is stopped.

To use, simply put the culture substrate 3, the aerobic bacteria and the water absorbing agent in powder form in the treatment tank 1. After that, open the outer lid 21 every day and put the garbage into the treatment tank 1. , Outer lid 21
All you have to do is close.

The garbage processor automatically alternates the stirring operation and the ventilation operation at regular intervals. The food waste is crushed by being stirred together with the culture substrate 3, rubbed and rubbed by the jagged culture substrate 3, aerobic bacteria adhere to the surface thereof, and decomposed by fermentation.

As a result, the food waste is decomposed into lower molecular weight earth-like organic matter and various trace gases such as water vapor, carbon dioxide gas, ammonia, and mercaptan which cause odor. Most of these water vapor, carbon dioxide, and other trace gases are released to the outside during the ventilation operation, but some of them are adsorbed to the culture substrate 3.

When such an operation of the food waste disposer continues for 2 to 4 months (depending on the usage conditions, the length of time may vary),
Until now, due to abrasion of the culture substrate 3, reduction of voids between the substrates and accumulation of decomposition products of food waste, saturation of adsorption force of water and gas of the culture substrate 3, etc., water content of the culture substrate 3 It became common that the odor increased and became sticky, and it became unsuitable for the reproduction of aerobic bacteria, and the action of anaerobic bacteria became stronger and the rotten smell came out.

As a result, the torque for rotating the stirring blade 2 is remarkably increased and the motor 5 is overloaded and locked, or the transmission mechanism is forced to slip and slips.

In the present invention, since the water absorbing agent is put in the culture substrate 3 in advance, the water is absorbed by the water absorbing agent.

The water absorbing agent absorbs water and swells to form a gel. As a result, the increase in water content of the culture substrate 3 is suppressed, stickiness and hardening are prevented, and good fermentation decomposition is performed for a long period of time.

Further, the gel water absorbing agent has a cushioning effect, has an effect of preventing the culture substrate from being solidified, and has an effect of improving the slippage at the time of stirring, so that a smooth stirring can be performed with a small stirring torque. There is also an effect.

Since the culture substrate is usually shipped in a dry state, it has a low water content at the beginning of operation and is not suitable for the activity of bacteria, and it is necessary to replenish the water.

Therefore, in the present invention, the water absorbing agent is made to absorb water so as to be put in a gel form. If water alone is poured, it will not be dispersed over the entire base material and will be collected at the bottom of the treatment tank, but if gelled, it will not flow and this will be prevented.

The gel is stirred and mixed with the substrate to homogenize. If the initial water absorption is suppressed to 50% or less of that of the water absorbing agent, it is possible to secure the above-mentioned water regulating effect that increases with the operating time.

The water absorbing agent may be added by observing the state of the water content of the base material during the operation and when the water content becomes excessive.

The amount is smaller and more efficient than the method of mixing in the substrate beforehand. In addition, when throwing in garbage with a very high water content, it is effective to sprinkle a water-absorbing agent on the garbage and make the water into a gel form in advance. It is prevented that the water content of the whole culture substrate in the treatment tank is temporarily increased and the fermentation decomposition is delayed.

Here, the water-absorbing agent in the present invention is a highly water-absorbent resin polymer in which a water-soluble resin is three-dimensionally structured, for example, a cross-linked acrylic or starch-acrylate graft copolymer such as cross-linked polyacrylate. Such as powder.

It is important that the water absorption capacity is large, but in addition to that, it is not toxic, and when mixed with soil as compost (plant), plants are also non-toxic and biodegradable to improve water retention of soil or soil. The one that has the function of preventing the clumping of is selected.

In another embodiment, the water-absorbing agent itself has a deodorizing action of absorbing or decomposing a malodorous gas generated during fermentation decomposition of food waste to deodorize it, or absorbing a liquid having a deodorizing action. By gelling and adding it, it can have a deodorizing effect as well as a water adjusting effect.

Many liquid deodorants are particularly excellent, but they could not be used in the conventional food waste treatment machines. However, according to the present invention, they are put in a gel form and agitated to make the whole culture substrate uniform. It can be dispersed.

In another embodiment, the water-absorbing agent has a pH-adjusting action which is important for the activation of aerobic bacteria, or a liquid having a pH-adjusting action is absorbed to form a gel to add water. By providing a pH adjusting action in addition to the adjusting action, the fermentation decomposition speed can be improved.

In another embodiment, a water-absorbing agent is provided with nutrients for activating aerobic bacteria, or a liquid containing nutrients is sucked into a gel to be added to a culture substrate to adjust the water content. Besides, it can also have a nutrient adjusting action, which can further accelerate the fermentation decomposition.

[0042]

EFFECTS OF THE INVENTION According to the present invention, by adding a water-absorbing agent to the culture substrate, the method of fermenting and decomposing the culture substrate at a relatively low temperature around room temperature, which is a drawback, Along with this, it is possible to prevent moisture from becoming sticky and solidifying due to thickening, strong odor and overloading of the stirring motor, and to achieve good fermentation decomposition of food waste for a long time. it can.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall configuration of a food waste processing machine that is an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

[Explanation of symbols]

1 ... Garbage treatment tank, 2 ... Stirring blade, 3 ... Culture substrate, 4 ...
Rotating shaft, 5 ... Motor, 21 ... Outer lid.

Claims (10)

[Claims] 1. A method for decomposing food waste by the action of aerobic bacteria by putting a culture substrate and aerobic bacteria in a treatment tank having a stirring device and a ventilation device, and throwing in the garbage and stirring it together. The garbage treatment machine for reducing the amount by the method described above, wherein a water absorbing agent is mixed in the culture substrate. 2. The kitchen waste processing machine according to claim 1, wherein the water absorbing material is mixed in the base material in advance before starting to use. 3. The kitchen waste processing machine according to claim 2, wherein the water absorbing agent is made into a gel by absorbing water in advance. 4. Decomposing food waste by the action of aerobic bacteria by putting the culture substrate and aerobic bacteria in a treatment tank having a stirrer and a ventilation device, throwing in the garbage and stirring together. In the kitchen waste processing machine, the amount of which is reduced by adding a water-absorbing agent when the water content of the culture substrate increases from the beginning of operation of the kitchen waste processing machine. 5. A food waste is decomposed by the action of aerobic bacteria by putting the culture substrate and aerobic bacteria in a treatment tank having a stirrer and a ventilation device, throwing in the garbage and stirring together. In the kitchen waste disposal machine, the garbage disposal is sprinkled with water absorbent and then put into the processing tank. 6. The garbage disposal according to any one of claims 1 to 5, wherein the water absorbing agent is a powder of a highly water-absorbent resin polymer in which a water-soluble resin is three-dimensionally structured. 7. The water-absorbent resin polymer according to claim 1, wherein the super absorbent polymer is crosslinked polyacrylate, starch /
A kitchen waste treating machine, which is a cross-linked acrylic acid graft copolymer. 8. The garbage disposal according to any one of claims 1 to 5, wherein the water absorbing agent has a deodorizing action or a liquid deodorizing agent is adsorbed. 9. The garbage treating machine according to claim 1, wherein the water absorbing agent has a pH adjusting action or adsorbs the pH adjusting agent. 10. The garbage disposal according to any one of claims 1 to 5, wherein the water-absorbing agent has an action of activating bacteria or adsorbs an activator of bacteria.