JP3030295B1 - Garbage decomposer - Google Patents

Abstract

Abstract: [Object] To stir a granular material containing garbage and microorganisms into which a stirring blade changes from forward rotation to reverse rotation, and to prevent partial bending or breakage. Provide a garbage decomposer capable of [Constitution] A dry decomposition tank containing a large number of particulates in which microorganisms have propagated, and the refuse and the particulates are stirred and mixed to promote the decomposition of the refuse introduced into the decomposition tank by the microorganisms. A rotary paddle for rotating the paddle, the rotary paddle including a rotating shaft that repeats forward rotation and reverse rotation, and a plurality of blades that are fixed to the rotating shaft and repeat forward and reverse rotation. And a blade disposed in the vicinity of an inner wall surface of the decomposition tank, at which an axial end of the rotating shaft in the plurality of blades contacts or faces, is orthogonal to a center line of the rotating shaft. It has a shape that spreads symmetrically in a diagonal direction from this orthogonal line toward the inner wall surface around the line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refuse decomposing apparatus for decomposing refuse such as garbage, plastic products and paper products by microorganisms.

[0002]

2. Description of the Related Art FIG. 5 is a schematic cross-sectional view (a cross-sectional view as viewed from the horizontal direction) showing a conventional garbage decomposing apparatus utilizing microorganisms. In FIG. 5, reference numeral 1 denotes a surface in which a large number of granular materials (for example, porous ceramic particles having a diameter of 5 to 10 mm) in which microorganisms are propagated are previously stored, and garbage and plastic products are contained therein. , A decomposing tank into which garbage such as paper products are charged (for example, the inside of the
(Dry decomposition tank). Reference numeral 2 denotes a rotating shaft (rotated by a motor (not shown)) provided horizontally at a substantially central position in the semi-cylindrical shape of the decomposition tank 1. Reference numeral 3 denotes a plurality of blades fixed from a plurality of positions of the rotary shaft 2 via a support shaft 4. Each of the blades 3
Are formed in the shape of a rectangular plate.

In the refuse disintegrating apparatus shown in FIG. 5, when refuse is input by a user, the rotating shaft 2 periodically and alternately rotates forward and backward alternately in the dissolving tank 1, whereby the plurality of blades 3 are rotated. In addition, the normal rotation and the reverse rotation are alternately repeated, and the charged refuse and the granular material are stirred and mixed. This promotes the decomposition of garbage by microorganisms,
Garbage is decomposed into gas and moisture. In FIG. 5,
A deodorizing device for exhaust gas containing a malodorous component discharged from the decomposition tank 1 and the like are not shown. The inside of the decomposition tank 1 is adjusted to a temperature at which microorganisms can be easily activated by a heater (not shown) or the like.

[0004]

As described above, in the conventional refuse disintegrating apparatus as shown in FIG. 5, each of the blades 3 rotated by the rotary shaft 2 has a rectangular plate-like plane. Is formed. By the way, each of these blades 3
Are alternately rotated forward and backward to agitate the refuse and the granular material, respectively, at a position close to each inner wall surface 1a which is in contact with or opposes the axial end of the rotating shaft 2 of the decomposition tank 1. Each of the arranged blades 3a has a large load particularly when a portion near the inner wall 1a (a portion surrounded by a broken line A in FIG. 5) switches from forward rotation to reverse rotation (or reverse rotation to forward rotation). As a result, excessive stress is caused, and there are inconveniences such as partial bending and breakage.

The present invention focuses on such a problem of the prior art. When the blade for stirring the dust and the granular material containing microorganisms is switched from forward rotation to reverse rotation, the present invention is directed to the present invention. It is another object of the present invention to provide a refuse decomposition apparatus capable of preventing the blade from being partially bent or damaged.

[0006]

A refuse decomposition apparatus according to the present invention for solving the above-mentioned problems comprises a decomposition tank (preferably a dry decomposition tank) containing a large number of particulates in which microorganisms have propagated. And a rotary paddle for stirring and mixing the refuse and the granular material in order to promote the decomposition of the refuse introduced into the decomposition tank by microorganisms, wherein the rotary paddle comprises: A rotating shaft that alternately repeats forward rotation and reverse rotation and a plurality of blades that are fixed to the rotating shaft and alternately repeat forward rotation and reverse rotation are provided, and the axial direction of the rotating shaft among the plurality of blades is provided. The blades arranged near the inner wall surface of the decomposition tank, whose ends are in contact with or opposed to each other, are centered on an orthogonal line orthogonal to the center line of the rotation axis, and are inclined from the orthogonal line toward the inner wall surface. Shape that spreads symmetrically in the direction Has, it is characterized in.

[0007] In the refuse decomposition apparatus of the present invention,
The blade arranged near the inner wall surface of the decomposition tank has a cross-sectional shape of a plane parallel to the center line of the rotation axis, which has a substantially く shape having the orthogonal line as a vertex. desirable.

[0008]

FIG. 1 is a perspective view showing a part of a refuse decomposition apparatus according to an embodiment of the present invention. In FIG.
Parts common to those in FIG. 5 are denoted by the same reference numerals. As shown in FIG. 1, the refuse decomposition apparatus according to the present embodiment is a dry decomposition tank in which a large number of granular bodies (for example, porous ceramic particles having a diameter of 5 to 10 mm) in which microorganisms have propagated are accommodated. 1 and a rotary paddle provided in the decomposition tank 1. The rotating paddle has a rotating shaft 2 that alternately repeats forward rotation and reverse rotation periodically, and a plurality of blades 3 fixed to the rotating shaft 2 via a support shaft 4.
And is composed of

Further, in the present embodiment, substantially "-" shaped blades 13 as shown in FIG. 1 are fixed to the axial end portions 2a of the rotary shaft 2 via support shafts 14, respectively. (In FIG. 1, only a portion near one end 1a of the rotating shaft 2 is shown, and a portion near the other end 1a is not shown.) FIG. 2 is a view showing a plane shape (a cross-sectional shape of a plane parallel to the center line of the rotation axis) of the substantially "-" shaped blade 13. As shown in FIG.
Is centered on an orthogonal line perpendicular to the axial center line of the rotating shaft 2 (a line parallel to the axial direction of the support shaft 14 and indicated by a point B in FIG. 2). Has a shape that gradually spreads symmetrically in the diagonal direction toward the inner wall surface 1a from above (a substantially “C” shape having the orthogonal line B as a vertex). In FIG. 1 and FIG. 2, a substantially triangular plate 15 is fixed to the center of the substantially "-" shaped blade 13 by welding or the like.
5, the support shaft 14 is fixed by welding or the like.

FIG. 3A is a conceptual diagram schematically showing a rotary paddle including the rotary shaft 2, the support shafts 4, 14 and the blades 3, 13 as described above. FIG. 3 (b)
FIG. 2 is a plan view of the rotary paddle according to the present embodiment as viewed from above the decomposition tank 1. Further, FIG.
FIG. 2 is a view showing the rotary paddle of the present embodiment, and is a side view when viewed from the inner wall surface 1a side of the disassembling tank 1. FIG.

Next, the operation of the rotary paddle of this embodiment will be described with reference to FIG. 4A is a view showing the operation of the blade 3 in which the plane of the conventional rotary paddle shown in FIG. 5 is formed in a rectangular shape, and FIG. 4B is a plan view of the rotary paddle of this embodiment shown in FIG. Blade 13 formed in a substantially "U" shape
It is a figure which shows operation | movement. 4 (a) and 4 (b), for convenience of explanation, the entire rotating paddle is not shown,
Only the blades 3 and the blades 13 arranged near the inner wall surface 1a of the decomposition tank 1 are shown.

In the conventional rotary paddle, as shown in FIG. 4A, especially when the rotation of the rotating shaft 2 is switched from forward rotation to reverse rotation (or from reverse rotation to forward rotation), the inside of the decomposition tank 1 is changed. A large load as shown by arrow C is applied to the blade 3 near the wall surface 1a (the inner wall surface 1a contacting or facing the axial end of the rotating shaft 2), and the blade 3 is particularly close to the inner wall surface 1a. The portion (right end portion in the figure) is subjected to a large stress due to the load, and is partially bent or broken.

On the other hand, in the rotary paddle of the present embodiment, as shown in FIG. 4B, when the rotation of the rotary shaft 2 is switched from the normal rotation to the reverse rotation, the inner wall 1a (rotational rotation) of the decomposition tank 1 is rotated. A substantially "<"-shaped blade 1 in the vicinity of an inner wall surface 1a) that contacts or opposes both ends of the shaft 2 in the axial direction.
3, a certain load is applied. But,
As described above, the plane of the blade 13 of the present embodiment is formed in a substantially U-shape, and the front portion of the blade 13 in the reverse rotation direction (or the normal rotation direction) is formed on the inner wall surface 1a. A portion that is close to and rearward in the reverse rotation direction (or the normal rotation direction) is formed so as to have an inclined surface 13a that gradually moves away from the inner wall surface 1a. Therefore,
In this embodiment, when the blade 13 is switched from the forward rotation to the reverse rotation (or from the reverse rotation to the forward rotation), a certain load is applied to the blade 13, but as shown by an arrow D in FIG. In addition, since the load force is received in the inward direction of the decomposition tank 1 along the inclined surface 13a of the substantially "<"-shaped blade 13, it is possible to avoid applying a large stress to the blade 13. . Therefore, in this embodiment, even when the blade 13 is switched from the forward rotation to the reverse rotation (or from the reverse rotation to the forward rotation), a large stress is applied to the blade 13 and the blade 13 may be partially bent or broken. , Will be effectively prevented.

[0014]

As described above, according to the present invention, with respect to the blades of the rotary paddle of the refuse decomposer, the blades located near the inner wall surface of the decomposition tank which are in contact with or face the axial end of the rotary shaft. A shape that spreads symmetrically in an oblique direction from the orthogonal line toward the inner wall surface with respect to an orthogonal line orthogonal to the center line of the rotation axis (e.g., the center line of the rotation axis; Since the cross-sectional shape of the parallel plane is formed in a substantially “C” shape having the orthogonal line as a vertex),
The blade is rotated from forward rotation to reverse rotation (or from reverse rotation to forward rotation)
Even when the blades are switched, the load force applied to the blades is diverted in the inward direction of the decomposition tank along the inclined surfaces of the blades, so that large stress is prevented from being applied to the blades, and the blades are partially Bending and breakage can be prevented.

[Brief description of the drawings]

FIG. 1 is a partial perspective view illustrating a refuse decomposition apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view showing the shape of blades provided at both ends of a rotary paddle according to the embodiment.

3A and 3B are diagrams for explaining the rotary paddle of the present embodiment, wherein FIG. 3A is a conceptual diagram, FIG. 3B is a plan view, and FIG. 3C is a side view.

FIG. 4 is a view for explaining the operation of the rotary paddle of the embodiment.

FIG. 5 is a schematic sectional view showing a conventional refuse decomposition apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Decomposition tank 1a Inner wall surface 2 Rotation shaft 3, 3a, 13 Blade 13a Inclined surface 4, 14 Support shaft 15 Plate

Claims (2)

(57) [Claims] 1. A decomposition tank containing a large number of particulates in which microorganisms have propagated, and the refuse and the particulates are stirred to promote the decomposition of the refuse introduced into the decomposition tank by the microorganisms. A rotary paddle for mixing, wherein the rotary paddle includes a rotating shaft that alternately repeats forward rotation and reverse rotation, and a plurality of rotating paddles that are fixed to the rotating shaft and alternately repeat forward rotation and reverse rotation. A blade disposed in the vicinity of an inner wall surface of the decomposition tank, at which an end of the plurality of blades in the axial direction of the rotating shaft is in contact with or opposed to a center line of the rotating shaft. A garbage decomposer characterized in that the garbage decomposer has a shape which is symmetrically spread from the orthogonal line obliquely toward the inner wall surface from the orthogonal line. 2. The blade according to claim 1, wherein the blade disposed near the inner wall has a plane parallel to a center line of the rotation shaft.
A garbage decomposer characterized in that the cross-sectional shape is a substantially "<" shape having the orthogonal line as a vertex.