JPH08103760A - Stirring tank for treating organic waste with decomposition enzyme of bacteria - Google Patents

Abstract

PURPOSE: To carry out the efficient stirring in a stirring tank performing the decomposition treatment of org. matter by decomposition enzyme of bacteria. CONSTITUTION: The stirring tank for treating org. waste with decomposition enzyme of bacteria is characterized by that rotary blades 4 are provided to the periphery of a rotary shaft 3 and a ring-shaped spiral blade 5 is connected to the rotary blades 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirring tank for decomposing organic waste such as food and drink debris and sludge by utilizing a microbial degrading enzyme.

[0002]

2. Description of the Related Art Recently, a technique of decomposing organic waste into carbon dioxide gas, water, nitrogen gas, etc. by a reaction of a microorganism decomposing enzyme has been adopted. It is essential to stir the culture medium in which the microorganisms are cultured (usually sawdust, charcoal or powder thereof, etc.) and mix them.

[0003] Such stirring is intended to uniformly effect the decomposition action, to supply air for aerobic microorganism growth among the microorganisms, and to uniformly distribute water necessary for the microorganism growth. It is done for the purpose.

The structure of a stirring tank according to the prior art which has been used for stirring such organic waste and a culture medium for microorganisms is shown in, for example, Japanese Patent Publication No. 2-30760. A configuration in which an impeller orthogonal to the rotation axis is provided, a configuration in which a screw conveyor with spiral blades is provided in the stirring tank, a configuration in which a ring-shaped spiral blade is provided outside the screw conveyor and the periphery thereof, and the stirring tank itself is rotated. Configurations have been proposed, but these configurations are
In any case, it was extremely insufficient in that the organic waste as the object to be treated and the microorganism culture medium were stirred so as to be mixed randomly in the three-dimensional direction.

[0005]

DISCLOSURE OF THE INVENTION The present invention overcomes the insufficiency of an organic waste agitation tank utilizing microorganisms according to the prior art, and enables a sufficient agitation in a short time. The purpose is to provide.

[0006]

In order to solve the above-mentioned problems, the structure of the present invention is such that a rotary blade provided around the rotary shaft and a ring-shaped spiral blade joined to the rotary blade are provided. According to the above, it comprises a stirring tank for the treatment of organic waste by a microbial degrading enzyme.

[0007]

In order to uniformly disperse the organic wastes and the culture medium of the microorganisms, the organic wastes not only in the rotation direction (xy plane direction) of the rotating shaft in the stirring tank but also in the rotating shaft direction (z direction). It is essential that the transfer of material and culture medium takes place.

In the present invention, as shown in FIG. 1, not only the rotating blade 4 rotating along the rotating shaft 3 but also the rotating blade 4
The ring-shaped spiral blades 5 that are sequentially joined to all or a part thereof are installed so that not only organic waste and microorganisms move in the rotation direction (xy plane direction) by the rotary blades 4 but also the rotary shaft 3 By moving in the direction along with and circulating, the random agitation in the three-dimensional direction is realized.

In FIG. 1, the ring-shaped spiral blade 5 is directed to one side, and based on this, the one side of the stirring tank 2 is rotated along the direction of the rotating shaft 3 while being rotated by the rotating blade 4. The organic waste and the culture medium 1 that have moved in the direction of the arrow collide with the wall at one end of the stirring tank 2 as indicated by the solid line arrow, and are moved by the ring-shaped spiral blades 5 and the organic waste and the culture medium 1. A pressing force of 1 continuously moves in the opposite direction along the outer or inner portion of the ring-shaped spiral blade.

[0010]

First Embodiment Although various designs can be considered for the configuration of the ring-shaped spiral blade 5 that operates together with the rotary blade 4, in the first embodiment, as shown in FIG.
The turning direction of the ring-shaped spiral blade 5 is reversed.

Therefore, when the organic waste and the culture medium 1 move to the substantially central portion of the stirring tank 2 along the inner ring-shaped rotary blade, the organic waste that has moved from the opposite side at the substantially central portion. It is stirred by rotating while colliding with the object and the culture medium 1, and as shown by the solid arrow, in the outer part of the ring-shaped spiral blade 5 on the same side of the stirring tank 2, the direction opposite to the original direction. Or spiraling in the same direction as before along the outer ring-shaped spiral blade 5 on the opposite side of the stirring tank 2.

As described above, in the first embodiment, since the organic waste and the culture medium 1 perform complicated agitation in the substantially central portion of the agitation tank 2 as compared with the configuration shown in FIG. 1, more efficient agitation can be realized. .

[0013]

[Embodiment 2] In Embodiment 2, as shown in FIG. 3, the ring-shaped spiral blades 5 which are successively fixed to the rotary blades 4 are designed in a double manner for the outer portion and the inner portion, and the direction of rotation is changed. The reverse configuration is adopted.

That is, in the second embodiment, since the ring-shaped swirling blade has a double structure in which the swirling direction is opposite to that of the swirling direction, the organic waste and the culture medium 1 that are moved in the axial direction are different from each other as shown in FIG. After the collision with the wall, the organic waste moving along the ring-shaped spiral blade 5 and the pressing force accompanying the movement of the culture medium 1 forcefully return to the opposite direction on the outside or inside of the ring-shaped spiral blade 5. Instead, as shown by the solid arrow,
The organic waste and the culture medium 1 that have moved to one side by the inner ring-shaped spiral blade 5 will collide with the wall once, and then will move in the opposite direction by the outer ring-shaped spiral blade 5.

As described above, in the case of the structure shown in FIG. 1 and in the case of the ring-shaped swirl vane having the single structure shown in FIG. 2, the organic waste and the culture medium 1 on the outside and inside of the swirl vane are used.
Is moved by the pressing force of the organic waste and the culture medium 1 which are moved by the ring-shaped swirler, and is not directly moved by the rotation of the ring-shaped swirler,
The movement speed is inevitably slow, and this requires that the outer circumference of the ring-shaped rotor be designed to be large.

On the other hand, when the ring-shaped spiral blade 5 having the double structure is adopted as in the second embodiment, the organic waste and the culture medium 1 are ring-shaped both on the outside and inside of the rotary blade 4. Since the spiral spiral blade 5 is forcibly moved in both directions as the spiral spiral blade 5 rotates and there is no imbalance in the moving speed, the ring spiral spiral blade 5 as in the case of FIGS.
It is not necessary to make a large design with a margin in the outer direction of the machine, a compact design is sufficient, and stirring can be performed more efficiently than in the case of FIG.

[0017]

Third Embodiment As shown in FIG. 4, the third embodiment is a first embodiment.
The ring-shaped spiral blade 5 has a double structure of the inner side and the outer side by reversing the swirling direction, while the spiral blades on the inner side and the outer side of the stirring tank 2 have substantially the same structure. Designed to rotate in the opposite direction.

In the structure of the third embodiment, as in the case of the first embodiment, as shown by the solid arrow, the organic waste and the culture medium 1 that have moved to the central portion of the stirring tank 2 are moved to the central portion. While exhibiting a complicated movement, it is more efficient to move in the opposite direction, and as in the case of the second embodiment.
The stirring tank 2 can also be designed in a compact structure.

[0019]

As described above, according to the present invention, based on the combination of the rotating blade and the ring-shaped spiral blade, not only the rotation direction of the rotating shaft but also the organic waste and the culture medium move along the rotating direction, and these are caused. Random movement in three dimensions becomes possible, efficient stirring of organic waste and culture medium and mixing of both can be realized, and thus efficient decomposition of microorganisms can be realized.

In particular, Examples 2 and 3 are excellent in that a stirring tank having a compact structure can be designed.

As described above, the present invention has a relatively simple structure, but has an extremely important and efficient action in the process of treating organic wastes utilizing the microbial degrading enzyme, and therefore its value is immense. is there.

[Brief description of drawings]

FIG. 1 is a side sectional view showing the operation principle of the present invention.

FIG. 2 is a side sectional view showing the configuration of the first embodiment.

FIG. 3 is a side sectional view showing the configuration of the second embodiment.

FIG. 4 is a side sectional view showing the configuration of the third embodiment.

[Simple explanation of the sign]

 1: Organic waste and culture medium 2: Stirring tank 3: Rotating shaft 4: Rotating blade 5: Ring-shaped spiral blade

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display area C05F 11/08 7537-4H

Claims (3)

[Claims] 1. A stirring tank for treating organic waste by a microbial degrading enzyme by providing rotary blades provided around a rotary shaft and ring-shaped spiral blades joined to the rotary blades. 2. The stirring tank for treating organic waste by a microbial degrading enzyme according to claim 1, wherein the swirling directions of the ring-shaped spiral blades are opposite to each other at a substantially central position of the rotating shaft. 3. A ring-shaped spiral blade having a double structure of an outer portion and an inner portion of a rotary blade, and the outer ring-shaped spiral blade and the inner ring-shaped spiral blade are rotated in opposite directions. An agitation tank for treating organic waste with a microbial degrading enzyme according to claim 1.